/* Parser for C and Objective-C.
Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010, 2011,
+ 2012 Free Software Foundation, Inc.
Parser actions based on the old Bison parser; structure somewhat
influenced by and fragments based on the C++ parser.
#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include "tm.h"
+#include "tm.h" /* For rtl.h: needs enum reg_class. */
#include "tree.h"
-#include "rtl.h"
#include "langhooks.h"
#include "input.h"
#include "cpplib.h"
#include "timevar.h"
-#include "c-pragma.h"
+#include "c-family/c-pragma.h"
#include "c-tree.h"
#include "flags.h"
#include "output.h"
-#include "toplev.h"
#include "ggc.h"
-#include "c-common.h"
+#include "c-family/c-common.h"
+#include "c-family/c-objc.h"
#include "vec.h"
#include "target.h"
#include "cgraph.h"
+#include "plugin.h"
\f
-/* The reserved keyword table. */
-struct resword
-{
- const char *word;
- ENUM_BITFIELD(rid) rid : 16;
- unsigned int disable : 16;
-};
-
-/* Disable mask. Keywords are disabled if (reswords[i].disable &
- mask) is _true_. */
-#define D_C89 0x01 /* not in C89 */
-#define D_EXT 0x02 /* GCC extension */
-#define D_EXT89 0x04 /* GCC extension incorporated in C99 */
-#define D_OBJC 0x08 /* Objective C only */
-
-static const struct resword reswords[] =
-{
- { "_Bool", RID_BOOL, 0 },
- { "_Complex", RID_COMPLEX, 0 },
- { "_Decimal32", RID_DFLOAT32, D_EXT },
- { "_Decimal64", RID_DFLOAT64, D_EXT },
- { "_Decimal128", RID_DFLOAT128, D_EXT },
- { "_Fract", RID_FRACT, D_EXT },
- { "_Accum", RID_ACCUM, D_EXT },
- { "_Sat", RID_SAT, D_EXT },
- { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
- { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
- { "__alignof", RID_ALIGNOF, 0 },
- { "__alignof__", RID_ALIGNOF, 0 },
- { "__asm", RID_ASM, 0 },
- { "__asm__", RID_ASM, 0 },
- { "__attribute", RID_ATTRIBUTE, 0 },
- { "__attribute__", RID_ATTRIBUTE, 0 },
- { "__builtin_choose_expr", RID_CHOOSE_EXPR, 0 },
- { "__builtin_offsetof", RID_OFFSETOF, 0 },
- { "__builtin_types_compatible_p", RID_TYPES_COMPATIBLE_P, 0 },
- { "__builtin_va_arg", RID_VA_ARG, 0 },
- { "__complex", RID_COMPLEX, 0 },
- { "__complex__", RID_COMPLEX, 0 },
- { "__const", RID_CONST, 0 },
- { "__const__", RID_CONST, 0 },
- { "__extension__", RID_EXTENSION, 0 },
- { "__func__", RID_C99_FUNCTION_NAME, 0 },
- { "__imag", RID_IMAGPART, 0 },
- { "__imag__", RID_IMAGPART, 0 },
- { "__inline", RID_INLINE, 0 },
- { "__inline__", RID_INLINE, 0 },
- { "__label__", RID_LABEL, 0 },
- { "__real", RID_REALPART, 0 },
- { "__real__", RID_REALPART, 0 },
- { "__restrict", RID_RESTRICT, 0 },
- { "__restrict__", RID_RESTRICT, 0 },
- { "__signed", RID_SIGNED, 0 },
- { "__signed__", RID_SIGNED, 0 },
- { "__thread", RID_THREAD, 0 },
- { "__typeof", RID_TYPEOF, 0 },
- { "__typeof__", RID_TYPEOF, 0 },
- { "__volatile", RID_VOLATILE, 0 },
- { "__volatile__", RID_VOLATILE, 0 },
- { "asm", RID_ASM, D_EXT },
- { "auto", RID_AUTO, 0 },
- { "break", RID_BREAK, 0 },
- { "case", RID_CASE, 0 },
- { "char", RID_CHAR, 0 },
- { "const", RID_CONST, 0 },
- { "continue", RID_CONTINUE, 0 },
- { "default", RID_DEFAULT, 0 },
- { "do", RID_DO, 0 },
- { "double", RID_DOUBLE, 0 },
- { "else", RID_ELSE, 0 },
- { "enum", RID_ENUM, 0 },
- { "extern", RID_EXTERN, 0 },
- { "float", RID_FLOAT, 0 },
- { "for", RID_FOR, 0 },
- { "goto", RID_GOTO, 0 },
- { "if", RID_IF, 0 },
- { "inline", RID_INLINE, D_EXT89 },
- { "int", RID_INT, 0 },
- { "long", RID_LONG, 0 },
- { "register", RID_REGISTER, 0 },
- { "restrict", RID_RESTRICT, D_C89 },
- { "return", RID_RETURN, 0 },
- { "short", RID_SHORT, 0 },
- { "signed", RID_SIGNED, 0 },
- { "sizeof", RID_SIZEOF, 0 },
- { "static", RID_STATIC, 0 },
- { "struct", RID_STRUCT, 0 },
- { "switch", RID_SWITCH, 0 },
- { "typedef", RID_TYPEDEF, 0 },
- { "typeof", RID_TYPEOF, D_EXT },
- { "union", RID_UNION, 0 },
- { "unsigned", RID_UNSIGNED, 0 },
- { "void", RID_VOID, 0 },
- { "volatile", RID_VOLATILE, 0 },
- { "while", RID_WHILE, 0 },
- /* These Objective-C keywords are recognized only immediately after
- an '@'. */
- { "class", RID_AT_CLASS, D_OBJC },
- { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
- { "defs", RID_AT_DEFS, D_OBJC },
- { "encode", RID_AT_ENCODE, D_OBJC },
- { "end", RID_AT_END, D_OBJC },
- { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
- { "interface", RID_AT_INTERFACE, D_OBJC },
- { "private", RID_AT_PRIVATE, D_OBJC },
- { "protected", RID_AT_PROTECTED, D_OBJC },
- { "protocol", RID_AT_PROTOCOL, D_OBJC },
- { "public", RID_AT_PUBLIC, D_OBJC },
- { "selector", RID_AT_SELECTOR, D_OBJC },
- { "throw", RID_AT_THROW, D_OBJC },
- { "try", RID_AT_TRY, D_OBJC },
- { "catch", RID_AT_CATCH, D_OBJC },
- { "finally", RID_AT_FINALLY, D_OBJC },
- { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
- /* These are recognized only in protocol-qualifier context
- (see above) */
- { "bycopy", RID_BYCOPY, D_OBJC },
- { "byref", RID_BYREF, D_OBJC },
- { "in", RID_IN, D_OBJC },
- { "inout", RID_INOUT, D_OBJC },
- { "oneway", RID_ONEWAY, D_OBJC },
- { "out", RID_OUT, D_OBJC },
-};
-#define N_reswords (sizeof reswords / sizeof (struct resword))
-
/* Initialization routine for this file. */
void
identifiers. */
unsigned int i;
tree id;
- int mask = (flag_isoc99 ? 0 : D_C89)
- | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0);
+ int mask = 0;
+
+ /* Make sure RID_MAX hasn't grown past the 8 bits used to hold the keyword in
+ the c_token structure. */
+ gcc_assert (RID_MAX <= 255);
+ mask |= D_CXXONLY;
+ if (!flag_isoc99)
+ mask |= D_C99;
+ if (flag_no_asm)
+ {
+ mask |= D_ASM | D_EXT;
+ if (!flag_isoc99)
+ mask |= D_EXT89;
+ }
if (!c_dialect_objc ())
- mask |= D_OBJC;
+ mask |= D_OBJC | D_CXX_OBJC;
- ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
- for (i = 0; i < N_reswords; i++)
+ ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX);
+ for (i = 0; i < num_c_common_reswords; i++)
{
/* If a keyword is disabled, do not enter it into the table
and so create a canonical spelling that isn't a keyword. */
- if (reswords[i].disable & mask)
- continue;
+ if (c_common_reswords[i].disable & mask)
+ {
+ if (warn_cxx_compat
+ && (c_common_reswords[i].disable & D_CXXWARN))
+ {
+ id = get_identifier (c_common_reswords[i].word);
+ C_SET_RID_CODE (id, RID_CXX_COMPAT_WARN);
+ C_IS_RESERVED_WORD (id) = 1;
+ }
+ continue;
+ }
- id = get_identifier (reswords[i].word);
- C_RID_CODE (id) = reswords[i].rid;
+ id = get_identifier (c_common_reswords[i].word);
+ C_SET_RID_CODE (id, c_common_reswords[i].rid);
C_IS_RESERVED_WORD (id) = 1;
- ridpointers [(int) reswords[i].rid] = id;
+ ridpointers [(int) c_common_reswords[i].rid] = id;
}
}
\f
C_ID_TYPENAME,
/* An identifier declared as an Objective-C class name. */
C_ID_CLASSNAME,
+ /* An address space identifier. */
+ C_ID_ADDRSPACE,
/* Not an identifier. */
C_ID_NONE
} c_id_kind;
/* A single C token after string literal concatenation and conversion
of preprocessing tokens to tokens. */
-typedef struct c_token GTY (())
-{
+typedef struct GTY (()) c_token {
/* The kind of token. */
ENUM_BITFIELD (cpp_ttype) type : 8;
/* If this token is a CPP_NAME, this value indicates whether also
ENUM_BITFIELD (rid) keyword : 8;
/* If this token is a CPP_PRAGMA, this indicates the pragma that
was seen. Otherwise it is PRAGMA_NONE. */
- ENUM_BITFIELD (pragma_kind) pragma_kind : 7;
- /* True if this token is from a system header. */
- BOOL_BITFIELD in_system_header : 1;
- /* The value associated with this token, if any. */
- tree value;
+ ENUM_BITFIELD (pragma_kind) pragma_kind : 8;
/* The location at which this token was found. */
location_t location;
+ /* The value associated with this token, if any. */
+ tree value;
} c_token;
/* A parser structure recording information about the state and
context of parsing. Includes lexer information with up to two
tokens of look-ahead; more are not needed for C. */
-typedef struct c_parser GTY(())
-{
+typedef struct GTY(()) c_parser {
/* The look-ahead tokens. */
c_token tokens[2];
/* How many look-ahead tokens are available (0, 1 or 2). */
BOOL_BITFIELD in_if_block : 1;
/* True if we want to lex an untranslated string. */
BOOL_BITFIELD lex_untranslated_string : 1;
+
/* Objective-C specific parser/lexer information. */
+
+ /* True if we are in a context where the Objective-C "PQ" keywords
+ are considered keywords. */
BOOL_BITFIELD objc_pq_context : 1;
+ /* True if we are parsing a (potential) Objective-C foreach
+ statement. This is set to true after we parsed 'for (' and while
+ we wait for 'in' or ';' to decide if it's a standard C for loop or an
+ Objective-C foreach loop. */
+ BOOL_BITFIELD objc_could_be_foreach_context : 1;
/* The following flag is needed to contextualize Objective-C lexical
analysis. In some cases (e.g., 'int NSObject;'), it is
undesirable to bind an identifier to an Objective-C class, even
if a class with that name exists. */
BOOL_BITFIELD objc_need_raw_identifier : 1;
+ /* Nonzero if we're processing a __transaction statement. The value
+ is 1 | TM_STMT_ATTR_*. */
+ unsigned int in_transaction : 4;
+ /* True if we are in a context where the Objective-C "Property attribute"
+ keywords are valid. */
+ BOOL_BITFIELD objc_property_attr_context : 1;
} c_parser;
static GTY (()) c_parser *the_parser;
-
/* Read in and lex a single token, storing it in *TOKEN. */
static void
token->id_kind = C_ID_NONE;
token->keyword = RID_MAX;
token->pragma_kind = PRAGMA_NONE;
- token->in_system_header = in_system_header;
switch (token->type)
{
{
enum rid rid_code = C_RID_CODE (token->value);
- if (c_dialect_objc ())
+ if (rid_code == RID_CXX_COMPAT_WARN)
+ {
+ warning_at (token->location,
+ OPT_Wc___compat,
+ "identifier %qE conflicts with C++ keyword",
+ token->value);
+ }
+ else if (rid_code >= RID_FIRST_ADDR_SPACE
+ && rid_code <= RID_LAST_ADDR_SPACE)
+ {
+ token->id_kind = C_ID_ADDRSPACE;
+ token->keyword = rid_code;
+ break;
+ }
+ else if (c_dialect_objc () && OBJC_IS_PQ_KEYWORD (rid_code))
+ {
+ /* We found an Objective-C "pq" keyword (in, out,
+ inout, bycopy, byref, oneway). They need special
+ care because the interpretation depends on the
+ context. */
+ if (parser->objc_pq_context)
+ {
+ token->type = CPP_KEYWORD;
+ token->keyword = rid_code;
+ break;
+ }
+ else if (parser->objc_could_be_foreach_context
+ && rid_code == RID_IN)
+ {
+ /* We are in Objective-C, inside a (potential)
+ foreach context (which means after having
+ parsed 'for (', but before having parsed ';'),
+ and we found 'in'. We consider it the keyword
+ which terminates the declaration at the
+ beginning of a foreach-statement. Note that
+ this means you can't use 'in' for anything else
+ in that context; in particular, in Objective-C
+ you can't use 'in' as the name of the running
+ variable in a C for loop. We could potentially
+ try to add code here to disambiguate, but it
+ seems a reasonable limitation. */
+ token->type = CPP_KEYWORD;
+ token->keyword = rid_code;
+ break;
+ }
+ /* Else, "pq" keywords outside of the "pq" context are
+ not keywords, and we fall through to the code for
+ normal tokens. */
+ }
+ else if (c_dialect_objc () && OBJC_IS_PATTR_KEYWORD (rid_code))
{
- if (!OBJC_IS_AT_KEYWORD (rid_code)
- && (!OBJC_IS_PQ_KEYWORD (rid_code)
- || parser->objc_pq_context))
+ /* We found an Objective-C "property attribute"
+ keyword (getter, setter, readonly, etc). These are
+ only valid in the property context. */
+ if (parser->objc_property_attr_context)
{
- /* Return the canonical spelling for this keyword. */
- token->value = ridpointers[(int) rid_code];
token->type = CPP_KEYWORD;
token->keyword = rid_code;
break;
}
+ /* Else they are not special keywords.
+ */
+ }
+ else if (c_dialect_objc ()
+ && (OBJC_IS_AT_KEYWORD (rid_code)
+ || OBJC_IS_CXX_KEYWORD (rid_code)))
+ {
+ /* We found one of the Objective-C "@" keywords (defs,
+ selector, synchronized, etc) or one of the
+ Objective-C "cxx" keywords (class, private,
+ protected, public, try, catch, throw) without a
+ preceding '@' sign. Do nothing and fall through to
+ the code for normal tokens (in C++ we would still
+ consider the CXX ones keywords, but not in C). */
+ ;
}
else
{
- /* Return the canonical spelling for this keyword. */
- token->value = ridpointers[(int) rid_code];
token->type = CPP_KEYWORD;
token->keyword = rid_code;
break;
variables and typedefs, and hence are shadowed by local
declarations. */
if (objc_interface_decl
- && (global_bindings_p ()
- || (!objc_force_identifier && !decl)))
+ && (!objc_force_identifier || global_bindings_p ()))
{
token->value = objc_interface_decl;
token->id_kind = C_ID_CLASSNAME;
case CPP_AT_NAME:
/* This only happens in Objective-C; it must be a keyword. */
token->type = CPP_KEYWORD;
- token->keyword = C_RID_CODE (token->value);
+ switch (C_RID_CODE (token->value))
+ {
+ /* Replace 'class' with '@class', 'private' with '@private',
+ etc. This prevents confusion with the C++ keyword
+ 'class', and makes the tokens consistent with other
+ Objective-C 'AT' keywords. For example '@class' is
+ reported as RID_AT_CLASS which is consistent with
+ '@synchronized', which is reported as
+ RID_AT_SYNCHRONIZED.
+ */
+ case RID_CLASS: token->keyword = RID_AT_CLASS; break;
+ case RID_PRIVATE: token->keyword = RID_AT_PRIVATE; break;
+ case RID_PROTECTED: token->keyword = RID_AT_PROTECTED; break;
+ case RID_PUBLIC: token->keyword = RID_AT_PUBLIC; break;
+ case RID_THROW: token->keyword = RID_AT_THROW; break;
+ case RID_TRY: token->keyword = RID_AT_TRY; break;
+ case RID_CATCH: token->keyword = RID_AT_CATCH; break;
+ default: token->keyword = C_RID_CODE (token->value);
+ }
break;
case CPP_COLON:
case CPP_COMMA:
break;
case CPP_PRAGMA:
/* We smuggled the cpp_token->u.pragma value in an INTEGER_CST. */
- token->pragma_kind = TREE_INT_CST_LOW (token->value);
+ token->pragma_kind = (enum pragma_kind) TREE_INT_CST_LOW (token->value);
token->value = NULL;
break;
default:
return c_parser_peek_token (parser)->keyword == keyword;
}
+/* Return a pointer to the next-but-one token from PARSER, reading it
+ in if necessary. The next token is already read in. */
+
+static c_token *
+c_parser_peek_2nd_token (c_parser *parser)
+{
+ if (parser->tokens_avail >= 2)
+ return &parser->tokens[1];
+ gcc_assert (parser->tokens_avail == 1);
+ gcc_assert (parser->tokens[0].type != CPP_EOF);
+ gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL);
+ c_lex_one_token (parser, &parser->tokens[1]);
+ parser->tokens_avail = 2;
+ return &parser->tokens[1];
+}
+
/* Return true if TOKEN can start a type name,
false otherwise. */
static bool
{
case C_ID_ID:
return false;
+ case C_ID_ADDRSPACE:
+ return true;
case C_ID_TYPENAME:
return true;
case C_ID_CLASSNAME:
{
case RID_UNSIGNED:
case RID_LONG:
+ case RID_INT128:
case RID_SHORT:
case RID_SIGNED:
case RID_COMPLEX:
}
}
+enum c_lookahead_kind {
+ /* Always treat unknown identifiers as typenames. */
+ cla_prefer_type,
+
+ /* Could be parsing a nonabstract declarator. Only treat an identifier
+ as a typename if followed by another identifier or a star. */
+ cla_nonabstract_decl,
+
+ /* Never treat identifiers as typenames. */
+ cla_prefer_id
+};
+
/* Return true if the next token from PARSER can start a type name,
+ false otherwise. LA specifies how to do lookahead in order to
+ detect unknown type names. If unsure, pick CLA_PREFER_ID. */
+
+static inline bool
+c_parser_next_tokens_start_typename (c_parser *parser, enum c_lookahead_kind la)
+{
+ c_token *token = c_parser_peek_token (parser);
+ if (c_token_starts_typename (token))
+ return true;
+
+ /* Try a bit harder to detect an unknown typename. */
+ if (la != cla_prefer_id
+ && token->type == CPP_NAME
+ && token->id_kind == C_ID_ID
+
+ /* Do not try too hard when we could have "object in array". */
+ && !parser->objc_could_be_foreach_context
+
+ && (la == cla_prefer_type
+ || c_parser_peek_2nd_token (parser)->type == CPP_NAME
+ || c_parser_peek_2nd_token (parser)->type == CPP_MULT)
+
+ /* Only unknown identifiers. */
+ && !lookup_name (token->value))
+ return true;
+
+ return false;
+}
+
+/* Return true if TOKEN is a type qualifier, false otherwise. */
+static bool
+c_token_is_qualifier (c_token *token)
+{
+ switch (token->type)
+ {
+ case CPP_NAME:
+ switch (token->id_kind)
+ {
+ case C_ID_ADDRSPACE:
+ return true;
+ default:
+ return false;
+ }
+ case CPP_KEYWORD:
+ switch (token->keyword)
+ {
+ case RID_CONST:
+ case RID_VOLATILE:
+ case RID_RESTRICT:
+ case RID_ATTRIBUTE:
+ return true;
+ default:
+ return false;
+ }
+ case CPP_LESS:
+ return false;
+ default:
+ gcc_unreachable ();
+ }
+}
+
+/* Return true if the next token from PARSER is a type qualifier,
false otherwise. */
static inline bool
-c_parser_next_token_starts_typename (c_parser *parser)
+c_parser_next_token_is_qualifier (c_parser *parser)
{
c_token *token = c_parser_peek_token (parser);
- return c_token_starts_typename (token);
+ return c_token_is_qualifier (token);
}
/* Return true if TOKEN can start declaration specifiers, false
{
case C_ID_ID:
return false;
+ case C_ID_ADDRSPACE:
+ return true;
case C_ID_TYPENAME:
return true;
case C_ID_CLASSNAME:
case RID_REGISTER:
case RID_TYPEDEF:
case RID_INLINE:
+ case RID_NORETURN:
case RID_AUTO:
case RID_THREAD:
case RID_UNSIGNED:
case RID_LONG:
+ case RID_INT128:
case RID_SHORT:
case RID_SIGNED:
case RID_COMPLEX:
case RID_FRACT:
case RID_ACCUM:
case RID_SAT:
+ case RID_ALIGNAS:
return true;
default:
return false;
}
}
+
+/* Return true if TOKEN can start declaration specifiers or a static
+ assertion, false otherwise. */
+static bool
+c_token_starts_declaration (c_token *token)
+{
+ if (c_token_starts_declspecs (token)
+ || token->keyword == RID_STATIC_ASSERT)
+ return true;
+ else
+ return false;
+}
+
/* Return true if the next token from PARSER can start declaration
specifiers, false otherwise. */
static inline bool
c_parser_next_token_starts_declspecs (c_parser *parser)
{
c_token *token = c_parser_peek_token (parser);
+
+ /* In Objective-C, a classname normally starts a declspecs unless it
+ is immediately followed by a dot. In that case, it is the
+ Objective-C 2.0 "dot-syntax" for class objects, ie, calls the
+ setter/getter on the class. c_token_starts_declspecs() can't
+ differentiate between the two cases because it only checks the
+ current token, so we have a special check here. */
+ if (c_dialect_objc ()
+ && token->type == CPP_NAME
+ && token->id_kind == C_ID_CLASSNAME
+ && c_parser_peek_2nd_token (parser)->type == CPP_DOT)
+ return false;
+
return c_token_starts_declspecs (token);
}
-/* Return a pointer to the next-but-one token from PARSER, reading it
- in if necessary. The next token is already read in. */
-
-static c_token *
-c_parser_peek_2nd_token (c_parser *parser)
+/* Return true if the next tokens from PARSER can start declaration
+ specifiers or a static assertion, false otherwise. */
+static inline bool
+c_parser_next_tokens_start_declaration (c_parser *parser)
{
- if (parser->tokens_avail >= 2)
- return &parser->tokens[1];
- gcc_assert (parser->tokens_avail == 1);
- gcc_assert (parser->tokens[0].type != CPP_EOF);
- gcc_assert (parser->tokens[0].type != CPP_PRAGMA_EOL);
- c_lex_one_token (parser, &parser->tokens[1]);
- parser->tokens_avail = 2;
- return &parser->tokens[1];
+ c_token *token = c_parser_peek_token (parser);
+
+ /* Same as above. */
+ if (c_dialect_objc ()
+ && token->type == CPP_NAME
+ && token->id_kind == C_ID_CLASSNAME
+ && c_parser_peek_2nd_token (parser)->type == CPP_DOT)
+ return false;
+
+ /* Labels do not start declarations. */
+ if (token->type == CPP_NAME
+ && c_parser_peek_2nd_token (parser)->type == CPP_COLON)
+ return false;
+
+ if (c_token_starts_declaration (token))
+ return true;
+
+ if (c_parser_next_tokens_start_typename (parser, cla_nonabstract_decl))
+ return true;
+
+ return false;
}
/* Consume the next token from PARSER. */
if (token->type != CPP_EOF)
{
input_location = token->location;
- in_system_header = token->in_system_header;
}
}
CPP_KEYWORD, keywords are treated like
identifiers. */
(token->type == CPP_KEYWORD ? CPP_NAME : token->type),
- token->value);
+ /* ??? The C parser does not save the cpp flags of a
+ token, we need to pass 0 here and we will not get
+ the source spelling of some tokens but rather the
+ canonical spelling. */
+ token->value, /*flags=*/0);
}
/* If the next token is of the indicated TYPE, consume it. Otherwise,
parser->error = false;
}
+/* CPP's options (initialized by c-opts.c). */
+extern cpp_options *cpp_opts;
+
/* Save the warning flags which are controlled by __extension__. */
static inline int
int ret = (pedantic
| (warn_pointer_arith << 1)
| (warn_traditional << 2)
- | (flag_iso << 3));
- pedantic = 0;
+ | (flag_iso << 3)
+ | (warn_long_long << 4)
+ | (warn_cxx_compat << 5)
+ | (warn_overlength_strings << 6));
+ cpp_opts->cpp_pedantic = pedantic = 0;
warn_pointer_arith = 0;
- warn_traditional = 0;
+ cpp_opts->cpp_warn_traditional = warn_traditional = 0;
flag_iso = 0;
+ cpp_opts->cpp_warn_long_long = warn_long_long = 0;
+ warn_cxx_compat = 0;
+ warn_overlength_strings = 0;
return ret;
}
static inline void
restore_extension_diagnostics (int flags)
{
- pedantic = flags & 1;
+ cpp_opts->cpp_pedantic = pedantic = flags & 1;
warn_pointer_arith = (flags >> 1) & 1;
- warn_traditional = (flags >> 2) & 1;
+ cpp_opts->cpp_warn_traditional = warn_traditional = (flags >> 2) & 1;
flag_iso = (flags >> 3) & 1;
+ cpp_opts->cpp_warn_long_long = warn_long_long = (flags >> 4) & 1;
+ warn_cxx_compat = (flags >> 5) & 1;
+ warn_overlength_strings = (flags >> 6) & 1;
}
/* Possibly kinds of declarator to parse. */
C_DTR_PARM
} c_dtr_syn;
+/* The binary operation precedence levels, where 0 is a dummy lowest level
+ used for the bottom of the stack. */
+enum c_parser_prec {
+ PREC_NONE,
+ PREC_LOGOR,
+ PREC_LOGAND,
+ PREC_BITOR,
+ PREC_BITXOR,
+ PREC_BITAND,
+ PREC_EQ,
+ PREC_REL,
+ PREC_SHIFT,
+ PREC_ADD,
+ PREC_MULT,
+ NUM_PRECS
+};
+
static void c_parser_external_declaration (c_parser *);
static void c_parser_asm_definition (c_parser *);
-static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool, bool);
+static void c_parser_declaration_or_fndef (c_parser *, bool, bool, bool,
+ bool, bool, tree *);
+static void c_parser_static_assert_declaration_no_semi (c_parser *);
+static void c_parser_static_assert_declaration (c_parser *);
static void c_parser_declspecs (c_parser *, struct c_declspecs *, bool, bool,
- bool);
+ bool, enum c_lookahead_kind);
static struct c_typespec c_parser_enum_specifier (c_parser *);
static struct c_typespec c_parser_struct_or_union_specifier (c_parser *);
static tree c_parser_struct_declaration (c_parser *);
static struct c_typespec c_parser_typeof_specifier (c_parser *);
+static tree c_parser_alignas_specifier (c_parser *);
static struct c_declarator *c_parser_declarator (c_parser *, bool, c_dtr_syn,
bool *);
static struct c_declarator *c_parser_direct_declarator (c_parser *, bool,
bool,
struct c_declarator *);
static struct c_arg_info *c_parser_parms_declarator (c_parser *, bool, tree);
-static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree);
+static struct c_arg_info *c_parser_parms_list_declarator (c_parser *, tree,
+ tree);
static struct c_parm *c_parser_parameter_declaration (c_parser *, tree);
static tree c_parser_simple_asm_expr (c_parser *);
static tree c_parser_attributes (c_parser *);
static struct c_type_name *c_parser_type_name (c_parser *);
static struct c_expr c_parser_initializer (c_parser *);
static struct c_expr c_parser_braced_init (c_parser *, tree, bool);
-static void c_parser_initelt (c_parser *);
-static void c_parser_initval (c_parser *, struct c_expr *);
+static void c_parser_initelt (c_parser *, struct obstack *);
+static void c_parser_initval (c_parser *, struct c_expr *,
+ struct obstack *);
static tree c_parser_compound_statement (c_parser *);
static void c_parser_compound_statement_nostart (c_parser *);
static void c_parser_label (c_parser *);
static void c_parser_for_statement (c_parser *);
static tree c_parser_asm_statement (c_parser *);
static tree c_parser_asm_operands (c_parser *, bool);
+static tree c_parser_asm_goto_operands (c_parser *);
static tree c_parser_asm_clobbers (c_parser *);
static struct c_expr c_parser_expr_no_commas (c_parser *, struct c_expr *);
static struct c_expr c_parser_conditional_expression (c_parser *,
struct c_expr *);
-static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *);
+static struct c_expr c_parser_binary_expression (c_parser *, struct c_expr *,
+ enum c_parser_prec);
static struct c_expr c_parser_cast_expression (c_parser *, struct c_expr *);
static struct c_expr c_parser_unary_expression (c_parser *);
static struct c_expr c_parser_sizeof_expression (c_parser *);
static struct c_expr c_parser_alignof_expression (c_parser *);
static struct c_expr c_parser_postfix_expression (c_parser *);
static struct c_expr c_parser_postfix_expression_after_paren_type (c_parser *,
- struct c_type_name *);
+ struct c_type_name *,
+ location_t);
static struct c_expr c_parser_postfix_expression_after_primary (c_parser *,
+ location_t loc,
struct c_expr);
+static tree c_parser_transaction (c_parser *, enum rid);
+static struct c_expr c_parser_transaction_expression (c_parser *, enum rid);
+static tree c_parser_transaction_cancel (c_parser *);
static struct c_expr c_parser_expression (c_parser *);
static struct c_expr c_parser_expression_conv (c_parser *);
-static tree c_parser_expr_list (c_parser *, bool);
+static VEC(tree,gc) *c_parser_expr_list (c_parser *, bool, bool,
+ VEC(tree,gc) **);
static void c_parser_omp_construct (c_parser *);
static void c_parser_omp_threadprivate (c_parser *);
static void c_parser_omp_barrier (c_parser *);
static void c_parser_omp_flush (c_parser *);
+static void c_parser_omp_taskwait (c_parser *);
+static void c_parser_omp_taskyield (c_parser *);
enum pragma_context { pragma_external, pragma_stmt, pragma_compound };
static bool c_parser_pragma (c_parser *, enum pragma_context);
/* These Objective-C parser functions are only ever called when
compiling Objective-C. */
-static void c_parser_objc_class_definition (c_parser *);
+static void c_parser_objc_class_definition (c_parser *, tree);
static void c_parser_objc_class_instance_variables (c_parser *);
static void c_parser_objc_class_declaration (c_parser *);
static void c_parser_objc_alias_declaration (c_parser *);
-static void c_parser_objc_protocol_definition (c_parser *);
-static enum tree_code c_parser_objc_method_type (c_parser *);
+static void c_parser_objc_protocol_definition (c_parser *, tree);
+static bool c_parser_objc_method_type (c_parser *);
static void c_parser_objc_method_definition (c_parser *);
static void c_parser_objc_methodprotolist (c_parser *);
static void c_parser_objc_methodproto (c_parser *);
-static tree c_parser_objc_method_decl (c_parser *);
+static tree c_parser_objc_method_decl (c_parser *, bool, tree *, tree *);
static tree c_parser_objc_type_name (c_parser *);
static tree c_parser_objc_protocol_refs (c_parser *);
-static void c_parser_objc_try_catch_statement (c_parser *);
+static void c_parser_objc_try_catch_finally_statement (c_parser *);
static void c_parser_objc_synchronized_statement (c_parser *);
static tree c_parser_objc_selector (c_parser *);
static tree c_parser_objc_selector_arg (c_parser *);
static tree c_parser_objc_receiver (c_parser *);
static tree c_parser_objc_message_args (c_parser *);
static tree c_parser_objc_keywordexpr (c_parser *);
+static void c_parser_objc_at_property_declaration (c_parser *);
+static void c_parser_objc_at_synthesize_declaration (c_parser *);
+static void c_parser_objc_at_dynamic_declaration (c_parser *);
+static bool c_parser_objc_diagnose_bad_element_prefix
+ (c_parser *, struct c_declspecs *);
/* Parse a translation unit (C90 6.7, C99 6.9).
{
if (c_parser_next_token_is (parser, CPP_EOF))
{
- if (pedantic)
- pedwarn ("%HISO C forbids an empty translation unit",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "ISO C forbids an empty translation unit");
}
else
{
void *obstack_position = obstack_alloc (&parser_obstack, 0);
+ mark_valid_location_for_stdc_pragma (false);
do
{
ggc_collect ();
case RID_AT_INTERFACE:
case RID_AT_IMPLEMENTATION:
gcc_assert (c_dialect_objc ());
- c_parser_objc_class_definition (parser);
+ c_parser_objc_class_definition (parser, NULL_TREE);
break;
case RID_AT_CLASS:
gcc_assert (c_dialect_objc ());
break;
case RID_AT_PROTOCOL:
gcc_assert (c_dialect_objc ());
- c_parser_objc_protocol_definition (parser);
+ c_parser_objc_protocol_definition (parser, NULL_TREE);
+ break;
+ case RID_AT_PROPERTY:
+ gcc_assert (c_dialect_objc ());
+ c_parser_objc_at_property_declaration (parser);
+ break;
+ case RID_AT_SYNTHESIZE:
+ gcc_assert (c_dialect_objc ());
+ c_parser_objc_at_synthesize_declaration (parser);
+ break;
+ case RID_AT_DYNAMIC:
+ gcc_assert (c_dialect_objc ());
+ c_parser_objc_at_dynamic_declaration (parser);
break;
case RID_AT_END:
gcc_assert (c_dialect_objc ());
}
break;
case CPP_SEMICOLON:
- if (pedantic)
- pedwarn ("%HISO C does not allow extra %<;%> outside of a function",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "ISO C does not allow extra %<;%> outside of a function");
c_parser_consume_token (parser);
break;
case CPP_PRAGMA:
+ mark_valid_location_for_stdc_pragma (true);
c_parser_pragma (parser, pragma_external);
+ mark_valid_location_for_stdc_pragma (false);
break;
case CPP_PLUS:
case CPP_MINUS:
as a declaration or function definition. */
default:
decl_or_fndef:
- /* A declaration or a function definition. We can only tell
- which after parsing the declaration specifiers, if any, and
- the first declarator. */
- c_parser_declaration_or_fndef (parser, true, true, false, true);
+ /* A declaration or a function definition (or, in Objective-C,
+ an @interface or @protocol with prefix attributes). We can
+ only tell which after parsing the declaration specifiers, if
+ any, and the first declarator. */
+ c_parser_declaration_or_fndef (parser, true, true, true, false, true, NULL);
break;
}
}
-
/* Parse a declaration or function definition (C90 6.5, 6.7.1, C99
6.7, 6.9.1). If FNDEF_OK is true, a function definition is
accepted; otherwise (old-style parameter declarations) only other
- declarations are accepted. If NESTED is true, we are inside a
- function or parsing old-style parameter declarations; any functions
- encountered are nested functions and declaration specifiers are
- required; otherwise we are at top level and functions are normal
- functions and declaration specifiers may be optional. If EMPTY_OK
- is true, empty declarations are OK (subject to all other
- constraints); otherwise (old-style parameter declarations) they are
- diagnosed. If START_ATTR_OK is true, the declaration specifiers
- may start with attributes; otherwise they may not.
+ declarations are accepted. If STATIC_ASSERT_OK is true, a static
+ assertion is accepted; otherwise (old-style parameter declarations)
+ it is not. If NESTED is true, we are inside a function or parsing
+ old-style parameter declarations; any functions encountered are
+ nested functions and declaration specifiers are required; otherwise
+ we are at top level and functions are normal functions and
+ declaration specifiers may be optional. If EMPTY_OK is true, empty
+ declarations are OK (subject to all other constraints); otherwise
+ (old-style parameter declarations) they are diagnosed. If
+ START_ATTR_OK is true, the declaration specifiers may start with
+ attributes; otherwise they may not.
+ OBJC_FOREACH_OBJECT_DECLARATION can be used to get back the parsed
+ declaration when parsing an Objective-C foreach statement.
declaration:
declaration-specifiers init-declarator-list[opt] ;
+ static_assert-declaration
function-definition:
declaration-specifiers[opt] declarator declaration-list[opt]
declaration-specifiers declarator declaration-list[opt]
compound-statement
+ Objective-C:
+ attributes objc-class-definition
+ attributes objc-category-definition
+ attributes objc-protocol-definition
+
The simple-asm-expr and attributes are GNU extensions.
This function does not handle __extension__; that is handled in its
C we also allow but diagnose declarations without declaration
specifiers, but only at top level (elsewhere they conflict with
other syntax).
-
+
+ In Objective-C, declarations of the looping variable in a foreach
+ statement are exceptionally terminated by 'in' (for example, 'for
+ (NSObject *object in array) { ... }').
+
OpenMP:
-
+
declaration:
threadprivate-directive */
static void
-c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok, bool empty_ok,
- bool nested, bool start_attr_ok)
+c_parser_declaration_or_fndef (c_parser *parser, bool fndef_ok,
+ bool static_assert_ok, bool empty_ok,
+ bool nested, bool start_attr_ok,
+ tree *objc_foreach_object_declaration)
{
struct c_declspecs *specs;
tree prefix_attrs;
bool diagnosed_no_specs = false;
location_t here = c_parser_peek_token (parser)->location;
+ if (static_assert_ok
+ && c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT))
+ {
+ c_parser_static_assert_declaration (parser);
+ return;
+ }
specs = build_null_declspecs ();
- c_parser_declspecs (parser, specs, true, true, start_attr_ok);
+
+ /* Try to detect an unknown type name when we have "A B" or "A *B". */
+ if (c_parser_peek_token (parser)->type == CPP_NAME
+ && c_parser_peek_token (parser)->id_kind == C_ID_ID
+ && (c_parser_peek_2nd_token (parser)->type == CPP_NAME
+ || c_parser_peek_2nd_token (parser)->type == CPP_MULT)
+ && (!nested || !lookup_name (c_parser_peek_token (parser)->value)))
+ {
+ error_at (here, "unknown type name %qE",
+ c_parser_peek_token (parser)->value);
+
+ /* Parse declspecs normally to get a correct pointer type, but avoid
+ a further "fails to be a type name" error. Refuse nested functions
+ since it is not how the user likely wants us to recover. */
+ c_parser_peek_token (parser)->type = CPP_KEYWORD;
+ c_parser_peek_token (parser)->keyword = RID_VOID;
+ c_parser_peek_token (parser)->value = error_mark_node;
+ fndef_ok = !nested;
+ }
+
+ c_parser_declspecs (parser, specs, true, true, start_attr_ok, cla_nonabstract_decl);
if (parser->error)
{
c_parser_skip_to_end_of_block_or_statement (parser);
else
{
shadow_tag_warned (specs, 1);
- pedwarn ("%Hempty declaration", &here);
+ pedwarn (here, 0, "empty declaration");
}
c_parser_consume_token (parser);
return;
}
+
+ /* Provide better error recovery. Note that a type name here is usually
+ better diagnosed as a redeclaration. */
+ if (empty_ok
+ && specs->typespec_kind == ctsk_tagdef
+ && c_parser_next_token_starts_declspecs (parser)
+ && !c_parser_next_token_is (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected %<;%>, identifier or %<(%>");
+ parser->error = false;
+ shadow_tag_warned (specs, 1);
+ return;
+ }
+ else if (c_dialect_objc ())
+ {
+ /* Prefix attributes are an error on method decls. */
+ switch (c_parser_peek_token (parser)->type)
+ {
+ case CPP_PLUS:
+ case CPP_MINUS:
+ if (c_parser_objc_diagnose_bad_element_prefix (parser, specs))
+ return;
+ if (specs->attrs)
+ {
+ warning_at (c_parser_peek_token (parser)->location,
+ OPT_Wattributes,
+ "prefix attributes are ignored for methods");
+ specs->attrs = NULL_TREE;
+ }
+ if (fndef_ok)
+ c_parser_objc_method_definition (parser);
+ else
+ c_parser_objc_methodproto (parser);
+ return;
+ break;
+ default:
+ break;
+ }
+ /* This is where we parse 'attributes @interface ...',
+ 'attributes @implementation ...', 'attributes @protocol ...'
+ (where attributes could be, for example, __attribute__
+ ((deprecated)).
+ */
+ switch (c_parser_peek_token (parser)->keyword)
+ {
+ case RID_AT_INTERFACE:
+ {
+ if (c_parser_objc_diagnose_bad_element_prefix (parser, specs))
+ return;
+ c_parser_objc_class_definition (parser, specs->attrs);
+ return;
+ }
+ break;
+ case RID_AT_IMPLEMENTATION:
+ {
+ if (c_parser_objc_diagnose_bad_element_prefix (parser, specs))
+ return;
+ if (specs->attrs)
+ {
+ warning_at (c_parser_peek_token (parser)->location,
+ OPT_Wattributes,
+ "prefix attributes are ignored for implementations");
+ specs->attrs = NULL_TREE;
+ }
+ c_parser_objc_class_definition (parser, NULL_TREE);
+ return;
+ }
+ break;
+ case RID_AT_PROTOCOL:
+ {
+ if (c_parser_objc_diagnose_bad_element_prefix (parser, specs))
+ return;
+ c_parser_objc_protocol_definition (parser, specs->attrs);
+ return;
+ }
+ break;
+ case RID_AT_ALIAS:
+ case RID_AT_CLASS:
+ case RID_AT_END:
+ case RID_AT_PROPERTY:
+ if (specs->attrs)
+ {
+ c_parser_error (parser, "unexpected attribute");
+ specs->attrs = NULL;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+
pending_xref_error ();
prefix_attrs = specs->attrs;
all_prefix_attrs = prefix_attrs;
{
struct c_declarator *declarator;
bool dummy = false;
+ timevar_id_t tv;
tree fnbody;
/* Declaring either one or more declarators (in which case we
should diagnose if there were no declaration specifiers) or a
function definition (in which case the diagnostic for
implicit int suffices). */
- declarator = c_parser_declarator (parser, specs->type_seen_p,
+ declarator = c_parser_declarator (parser,
+ specs->typespec_kind != ctsk_none,
C_DTR_NORMAL, &dummy);
if (declarator == NULL)
{
|| c_parser_next_token_is (parser, CPP_COMMA)
|| c_parser_next_token_is (parser, CPP_SEMICOLON)
|| c_parser_next_token_is_keyword (parser, RID_ASM)
- || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
+ || c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE)
+ || c_parser_next_token_is_keyword (parser, RID_IN))
{
tree asm_name = NULL_TREE;
tree postfix_attrs = NULL_TREE;
if (!diagnosed_no_specs && !specs->declspecs_seen_p)
{
diagnosed_no_specs = true;
- pedwarn ("%Hdata definition has no type or storage class",
- &here);
+ pedwarn (here, 0, "data definition has no type or storage class");
}
/* Having seen a data definition, there cannot now be a
function definition. */
{
tree d;
struct c_expr init;
+ location_t init_loc;
c_parser_consume_token (parser);
/* The declaration of the variable is in effect while
its initializer is parsed. */
if (!d)
d = error_mark_node;
start_init (d, asm_name, global_bindings_p ());
+ init_loc = c_parser_peek_token (parser)->location;
init = c_parser_initializer (parser);
finish_init ();
if (d != error_mark_node)
{
maybe_warn_string_init (TREE_TYPE (d), init);
- finish_decl (d, init.value, asm_name);
+ finish_decl (d, init_loc, init.value,
+ init.original_type, asm_name);
}
}
else
chainon (postfix_attrs,
all_prefix_attrs));
if (d)
- finish_decl (d, NULL_TREE, asm_name);
+ finish_decl (d, UNKNOWN_LOCATION, NULL_TREE,
+ NULL_TREE, asm_name);
+
+ if (c_parser_next_token_is_keyword (parser, RID_IN))
+ {
+ if (d)
+ *objc_foreach_object_declaration = d;
+ else
+ *objc_foreach_object_declaration = error_mark_node;
+ }
}
if (c_parser_next_token_is (parser, CPP_COMMA))
{
c_parser_consume_token (parser);
return;
}
+ else if (c_parser_next_token_is_keyword (parser, RID_IN))
+ {
+ /* This can only happen in Objective-C: we found the
+ 'in' that terminates the declaration inside an
+ Objective-C foreach statement. Do not consume the
+ token, so that the caller can use it to determine
+ that this indeed is a foreach context. */
+ return;
+ }
else
{
c_parser_error (parser, "expected %<,%> or %<;%>");
/* Function definition (nested or otherwise). */
if (nested)
{
- if (pedantic)
- pedwarn ("%HISO C forbids nested functions", &here);
+ pedwarn (here, OPT_pedantic, "ISO C forbids nested functions");
c_push_function_context ();
}
if (!start_function (specs, declarator, all_prefix_attrs))
c_pop_function_context ();
break;
}
+
+ if (DECL_DECLARED_INLINE_P (current_function_decl))
+ tv = TV_PARSE_INLINE;
+ else
+ tv = TV_PARSE_FUNC;
+ timevar_push (tv);
+
/* Parse old-style parameter declarations. ??? Attributes are
not allowed to start declaration specifiers here because of a
syntax conflict between a function declaration with attribute
function definitions either. */
while (c_parser_next_token_is_not (parser, CPP_EOF)
&& c_parser_next_token_is_not (parser, CPP_OPEN_BRACE))
- c_parser_declaration_or_fndef (parser, false, false, true, false);
- DECL_SOURCE_LOCATION (current_function_decl)
- = c_parser_peek_token (parser)->location;
+ c_parser_declaration_or_fndef (parser, false, false, false,
+ true, false, NULL);
store_parm_decls ();
+ DECL_STRUCT_FUNCTION (current_function_decl)->function_start_locus
+ = c_parser_peek_token (parser)->location;
fnbody = c_parser_compound_statement (parser);
if (nested)
{
tree decl = current_function_decl;
+ /* Mark nested functions as needing static-chain initially.
+ lower_nested_functions will recompute it but the
+ DECL_STATIC_CHAIN flag is also used before that happens,
+ by initializer_constant_valid_p. See gcc.dg/nested-fn-2.c. */
+ DECL_STATIC_CHAIN (decl) = 1;
add_stmt (fnbody);
finish_function ();
c_pop_function_context ();
- add_stmt (build_stmt (DECL_EXPR, decl));
+ add_stmt (build_stmt (DECL_SOURCE_LOCATION (decl), DECL_EXPR, decl));
}
else
{
add_stmt (fnbody);
finish_function ();
}
+
+ timevar_pop (tv);
break;
}
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
-/* Parse some declaration specifiers (possibly none) (C90 6.5, C99
- 6.7), adding them to SPECS (which may already include some).
- Storage class specifiers are accepted iff SCSPEC_OK; type
- specifiers are accepted iff TYPESPEC_OK; attributes are accepted at
- the start iff START_ATTR_OK.
+/* Parse a static assertion (C11 6.7.10).
- declaration-specifiers:
- storage-class-specifier declaration-specifiers[opt]
- type-specifier declaration-specifiers[opt]
- type-qualifier declaration-specifiers[opt]
- function-specifier declaration-specifiers[opt]
+ static_assert-declaration:
+ static_assert-declaration-no-semi ;
+*/
- Function specifiers (inline) are from C99, and are currently
- handled as storage class specifiers, as is __thread.
+static void
+c_parser_static_assert_declaration (c_parser *parser)
+{
+ c_parser_static_assert_declaration_no_semi (parser);
+ if (parser->error
+ || !c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
+ c_parser_skip_to_end_of_block_or_statement (parser);
+}
- C90 6.5.1, C99 6.7.1:
- storage-class-specifier:
- typedef
- extern
- static
- auto
- register
+/* Parse a static assertion (C11 6.7.10), without the trailing
+ semicolon.
- C99 6.7.4:
- function-specifier:
- inline
+ static_assert-declaration-no-semi:
+ _Static_assert ( constant-expression , string-literal )
+*/
- C90 6.5.2, C99 6.7.2:
- type-specifier:
- void
- char
- short
- int
- long
+static void
+c_parser_static_assert_declaration_no_semi (c_parser *parser)
+{
+ location_t assert_loc, value_loc;
+ tree value;
+ tree string;
+
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT));
+ assert_loc = c_parser_peek_token (parser)->location;
+ if (!flag_isoc11)
+ {
+ if (flag_isoc99)
+ pedwarn (assert_loc, OPT_pedantic,
+ "ISO C99 does not support %<_Static_assert%>");
+ else
+ pedwarn (assert_loc, OPT_pedantic,
+ "ISO C90 does not support %<_Static_assert%>");
+ }
+ c_parser_consume_token (parser);
+ if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
+ return;
+ value_loc = c_parser_peek_token (parser)->location;
+ value = c_parser_expr_no_commas (parser, NULL).value;
+ parser->lex_untranslated_string = true;
+ if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
+ {
+ parser->lex_untranslated_string = false;
+ return;
+ }
+ switch (c_parser_peek_token (parser)->type)
+ {
+ case CPP_STRING:
+ case CPP_STRING16:
+ case CPP_STRING32:
+ case CPP_WSTRING:
+ case CPP_UTF8STRING:
+ string = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ parser->lex_untranslated_string = false;
+ break;
+ default:
+ c_parser_error (parser, "expected string literal");
+ parser->lex_untranslated_string = false;
+ return;
+ }
+ c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+
+ if (!INTEGRAL_TYPE_P (TREE_TYPE (value)))
+ {
+ error_at (value_loc, "expression in static assertion is not an integer");
+ return;
+ }
+ if (TREE_CODE (value) != INTEGER_CST)
+ {
+ value = c_fully_fold (value, false, NULL);
+ if (TREE_CODE (value) == INTEGER_CST)
+ pedwarn (value_loc, OPT_pedantic, "expression in static assertion "
+ "is not an integer constant expression");
+ }
+ if (TREE_CODE (value) != INTEGER_CST)
+ {
+ error_at (value_loc, "expression in static assertion is not constant");
+ return;
+ }
+ constant_expression_warning (value);
+ if (integer_zerop (value))
+ error_at (assert_loc, "static assertion failed: %E", string);
+}
+
+/* Parse some declaration specifiers (possibly none) (C90 6.5, C99
+ 6.7), adding them to SPECS (which may already include some).
+ Storage class specifiers are accepted iff SCSPEC_OK; type
+ specifiers are accepted iff TYPESPEC_OK; attributes are accepted at
+ the start iff START_ATTR_OK.
+
+ declaration-specifiers:
+ storage-class-specifier declaration-specifiers[opt]
+ type-specifier declaration-specifiers[opt]
+ type-qualifier declaration-specifiers[opt]
+ function-specifier declaration-specifiers[opt]
+ alignment-specifier declaration-specifiers[opt]
+
+ Function specifiers (inline) are from C99, and are currently
+ handled as storage class specifiers, as is __thread. Alignment
+ specifiers are from C11.
+
+ C90 6.5.1, C99 6.7.1:
+ storage-class-specifier:
+ typedef
+ extern
+ static
+ auto
+ register
+
+ C99 6.7.4:
+ function-specifier:
+ inline
+ _Noreturn
+
+ (_Noreturn is new in C11.)
+
+ C90 6.5.2, C99 6.7.2:
+ type-specifier:
+ void
+ char
+ short
+ int
+ long
float
double
signed
const
restrict
volatile
+ address-space-qualifier
(restrict is new in C99.)
declaration-specifiers:
attributes declaration-specifiers[opt]
+ type-qualifier:
+ address-space
+
+ address-space:
+ identifier recognized by the target
+
storage-class-specifier:
__thread
type-specifier:
typeof-specifier
+ __int128
_Decimal32
_Decimal64
_Decimal128
static void
c_parser_declspecs (c_parser *parser, struct c_declspecs *specs,
- bool scspec_ok, bool typespec_ok, bool start_attr_ok)
+ bool scspec_ok, bool typespec_ok, bool start_attr_ok,
+ enum c_lookahead_kind la)
{
bool attrs_ok = start_attr_ok;
- bool seen_type = specs->type_seen_p;
+ bool seen_type = specs->typespec_kind != ctsk_none;
+
+ if (!typespec_ok)
+ gcc_assert (la == cla_prefer_id);
+
while (c_parser_next_token_is (parser, CPP_NAME)
|| c_parser_next_token_is (parser, CPP_KEYWORD)
|| (c_dialect_objc () && c_parser_next_token_is (parser, CPP_LESS)))
{
struct c_typespec t;
tree attrs;
+ tree align;
+ location_t loc = c_parser_peek_token (parser)->location;
+
+ /* If we cannot accept a type, exit if the next token must start
+ one. Also, if we already have seen a tagged definition,
+ a typename would be an error anyway and likely the user
+ has simply forgotten a semicolon, so we exit. */
+ if ((!typespec_ok || specs->typespec_kind == ctsk_tagdef)
+ && c_parser_next_tokens_start_typename (parser, la)
+ && !c_parser_next_token_is_qualifier (parser))
+ break;
+
if (c_parser_next_token_is (parser, CPP_NAME))
{
tree value = c_parser_peek_token (parser)->value;
c_id_kind kind = c_parser_peek_token (parser)->id_kind;
- /* This finishes the specifiers unless a type name is OK, it
- is declared as a type name and a type name hasn't yet
- been seen. */
- if (!typespec_ok || seen_type
- || (kind != C_ID_TYPENAME && kind != C_ID_CLASSNAME))
+
+ if (kind == C_ID_ADDRSPACE)
+ {
+ addr_space_t as
+ = c_parser_peek_token (parser)->keyword - RID_FIRST_ADDR_SPACE;
+ declspecs_add_addrspace (specs, as);
+ c_parser_consume_token (parser);
+ attrs_ok = true;
+ continue;
+ }
+
+ gcc_assert (!c_parser_next_token_is_qualifier (parser));
+
+ /* If we cannot accept a type, and the next token must start one,
+ exit. Do the same if we already have seen a tagged definition,
+ since it would be an error anyway and likely the user has simply
+ forgotten a semicolon. */
+ if (seen_type || !c_parser_next_tokens_start_typename (parser, la))
break;
+
+ /* Now at an unknown typename (C_ID_ID), a C_ID_TYPENAME or
+ a C_ID_CLASSNAME. */
c_parser_consume_token (parser);
seen_type = true;
attrs_ok = true;
- if (kind == C_ID_TYPENAME
- && (!c_dialect_objc ()
- || c_parser_next_token_is_not (parser, CPP_LESS)))
+ if (kind == C_ID_ID)
+ {
+ error ("unknown type name %qE", value);
+ t.kind = ctsk_typedef;
+ t.spec = error_mark_node;
+ }
+ else if (kind == C_ID_TYPENAME
+ && (!c_dialect_objc ()
+ || c_parser_next_token_is_not (parser, CPP_LESS)))
{
t.kind = ctsk_typedef;
/* For a typedef name, record the meaning, not the name.
proto = c_parser_objc_protocol_refs (parser);
t.spec = objc_get_protocol_qualified_type (value, proto);
}
- declspecs_add_type (specs, t);
+ t.expr = NULL_TREE;
+ t.expr_const_operands = true;
+ declspecs_add_type (loc, specs, t);
continue;
}
if (c_parser_next_token_is (parser, CPP_LESS))
proto = c_parser_objc_protocol_refs (parser);
t.kind = ctsk_objc;
t.spec = objc_get_protocol_qualified_type (NULL_TREE, proto);
- declspecs_add_type (specs, t);
+ t.expr = NULL_TREE;
+ t.expr_const_operands = true;
+ declspecs_add_type (loc, specs, t);
continue;
}
gcc_assert (c_parser_next_token_is (parser, CPP_KEYWORD));
case RID_REGISTER:
case RID_TYPEDEF:
case RID_INLINE:
+ case RID_NORETURN:
case RID_AUTO:
case RID_THREAD:
if (!scspec_ok)
goto out;
attrs_ok = true;
- /* TODO: Distinguish between function specifiers (inline)
+ /* TODO: Distinguish between function specifiers (inline, noreturn)
and storage class specifiers, either here or in
declspecs_add_scspec. */
declspecs_add_scspec (specs, c_parser_peek_token (parser)->value);
break;
case RID_UNSIGNED:
case RID_LONG:
+ case RID_INT128:
case RID_SHORT:
case RID_SIGNED:
case RID_COMPLEX:
parser->objc_need_raw_identifier = true;
t.kind = ctsk_resword;
t.spec = c_parser_peek_token (parser)->value;
- declspecs_add_type (specs, t);
+ t.expr = NULL_TREE;
+ t.expr_const_operands = true;
+ declspecs_add_type (loc, specs, t);
c_parser_consume_token (parser);
break;
case RID_ENUM:
attrs_ok = true;
seen_type = true;
t = c_parser_enum_specifier (parser);
- declspecs_add_type (specs, t);
+ declspecs_add_type (loc, specs, t);
break;
case RID_STRUCT:
case RID_UNION:
attrs_ok = true;
seen_type = true;
t = c_parser_struct_or_union_specifier (parser);
- declspecs_add_type (specs, t);
+ invoke_plugin_callbacks (PLUGIN_FINISH_TYPE, t.spec);
+ declspecs_add_type (loc, specs, t);
break;
case RID_TYPEOF:
/* ??? The old parser rejected typeof after other type
attrs_ok = true;
seen_type = true;
t = c_parser_typeof_specifier (parser);
- declspecs_add_type (specs, t);
+ declspecs_add_type (loc, specs, t);
break;
case RID_CONST:
case RID_VOLATILE:
attrs = c_parser_attributes (parser);
declspecs_add_attrs (specs, attrs);
break;
+ case RID_ALIGNAS:
+ align = c_parser_alignas_specifier (parser);
+ declspecs_add_alignas (specs, align);
+ break;
default:
goto out;
}
struct c_typespec ret;
tree attrs;
tree ident = NULL_TREE;
- location_t ident_loc;
+ location_t enum_loc;
+ location_t ident_loc = UNKNOWN_LOCATION; /* Quiet warning. */
gcc_assert (c_parser_next_token_is_keyword (parser, RID_ENUM));
+ enum_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
attrs = c_parser_attributes (parser);
+ enum_loc = c_parser_peek_token (parser)->location;
/* Set the location in case we create a decl now. */
c_parser_set_source_position_from_token (c_parser_peek_token (parser));
if (c_parser_next_token_is (parser, CPP_NAME))
{
ident = c_parser_peek_token (parser)->value;
ident_loc = c_parser_peek_token (parser)->location;
+ enum_loc = ident_loc;
c_parser_consume_token (parser);
}
if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
{
/* Parse an enum definition. */
struct c_enum_contents the_enum;
- tree type = start_enum (&the_enum, ident);
+ tree type;
tree postfix_attrs;
/* We chain the enumerators in reverse order, then put them in
forward order at the end. */
- tree values = NULL_TREE;
+ tree values;
+ timevar_push (TV_PARSE_ENUM);
+ type = start_enum (enum_loc, &the_enum, ident);
+ values = NULL_TREE;
c_parser_consume_token (parser);
while (true)
{
tree enum_decl;
bool seen_comma;
c_token *token;
- location_t comma_loc;
+ location_t comma_loc = UNKNOWN_LOCATION; /* Quiet warning. */
+ location_t decl_loc, value_loc;
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
c_parser_error (parser, "expected identifier");
enum_id = token->value;
/* Set the location in case we create a decl now. */
c_parser_set_source_position_from_token (token);
+ decl_loc = value_loc = token->location;
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_EQ))
{
c_parser_consume_token (parser);
+ value_loc = c_parser_peek_token (parser)->location;
enum_value = c_parser_expr_no_commas (parser, NULL).value;
}
else
enum_value = NULL_TREE;
- enum_decl = build_enumerator (&the_enum, enum_id, enum_value);
+ enum_decl = build_enumerator (decl_loc, value_loc,
+ &the_enum, enum_id, enum_value);
TREE_CHAIN (enum_decl) = values;
values = enum_decl;
seen_comma = false;
}
if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
{
- if (seen_comma && pedantic && !flag_isoc99)
- pedwarn ("%Hcomma at end of enumerator list", &comma_loc);
+ if (seen_comma && !flag_isoc99)
+ pedwarn (comma_loc, OPT_pedantic, "comma at end of enumerator list");
c_parser_consume_token (parser);
break;
}
ret.spec = finish_enum (type, nreverse (values),
chainon (attrs, postfix_attrs));
ret.kind = ctsk_tagdef;
+ ret.expr = NULL_TREE;
+ ret.expr_const_operands = true;
+ timevar_pop (TV_PARSE_ENUM);
return ret;
}
else if (!ident)
c_parser_error (parser, "expected %<{%>");
ret.spec = error_mark_node;
ret.kind = ctsk_tagref;
+ ret.expr = NULL_TREE;
+ ret.expr_const_operands = true;
return ret;
}
- ret = parser_xref_tag (ENUMERAL_TYPE, ident);
+ ret = parser_xref_tag (ident_loc, ENUMERAL_TYPE, ident);
/* In ISO C, enumerated types can be referred to only if already
defined. */
if (pedantic && !COMPLETE_TYPE_P (ret.spec))
{
gcc_assert (ident);
- pedwarn ("%HISO C forbids forward references to %<enum%> types",
- &ident_loc);
+ pedwarn (enum_loc, OPT_pedantic,
+ "ISO C forbids forward references to %<enum%> types");
}
return ret;
}
struct c_typespec ret;
tree attrs;
tree ident = NULL_TREE;
+ location_t struct_loc;
+ location_t ident_loc = UNKNOWN_LOCATION;
enum tree_code code;
switch (c_parser_peek_token (parser)->keyword)
{
default:
gcc_unreachable ();
}
+ struct_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
attrs = c_parser_attributes (parser);
+
/* Set the location in case we create a decl now. */
c_parser_set_source_position_from_token (c_parser_peek_token (parser));
+
if (c_parser_next_token_is (parser, CPP_NAME))
{
ident = c_parser_peek_token (parser)->value;
+ ident_loc = c_parser_peek_token (parser)->location;
+ struct_loc = ident_loc;
c_parser_consume_token (parser);
}
if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
{
/* Parse a struct or union definition. Start the scope of the
tag before parsing components. */
- tree type = start_struct (code, ident);
+ struct c_struct_parse_info *struct_info;
+ tree type = start_struct (struct_loc, code, ident, &struct_info);
tree postfix_attrs;
/* We chain the components in reverse order, then put them in
forward order at the end. Each struct-declaration may
semicolon separated fields than comma separated fields, and
so we'll be minimizing the number of node traversals required
by chainon. */
- tree contents = NULL_TREE;
+ tree contents;
+ timevar_push (TV_PARSE_STRUCT);
+ contents = NULL_TREE;
c_parser_consume_token (parser);
/* Handle the Objective-C @defs construct,
e.g. foo(sizeof(struct{ @defs(ClassName) }));. */
/* Parse any stray semicolon. */
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- if (pedantic)
- pedwarn ("%Hextra semicolon in struct or union specified",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "extra semicolon in struct or union specified");
c_parser_consume_token (parser);
continue;
}
else
{
if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
- pedwarn ("%Hno semicolon at end of struct or union",
- &c_parser_peek_token (parser)->location);
- else
+ pedwarn (c_parser_peek_token (parser)->location, 0,
+ "no semicolon at end of struct or union");
+ else if (parser->error
+ || !c_parser_next_token_starts_declspecs (parser))
{
c_parser_error (parser, "expected %<;%>");
c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
break;
}
+
+ /* If we come here, we have already emitted an error
+ for an expected `;', identifier or `(', and we also
+ recovered already. Go on with the next field. */
}
}
postfix_attrs = c_parser_attributes (parser);
- ret.spec = finish_struct (type, nreverse (contents),
- chainon (attrs, postfix_attrs));
+ ret.spec = finish_struct (struct_loc, type, nreverse (contents),
+ chainon (attrs, postfix_attrs), struct_info);
ret.kind = ctsk_tagdef;
+ ret.expr = NULL_TREE;
+ ret.expr_const_operands = true;
+ timevar_pop (TV_PARSE_STRUCT);
return ret;
}
else if (!ident)
c_parser_error (parser, "expected %<{%>");
ret.spec = error_mark_node;
ret.kind = ctsk_tagref;
+ ret.expr = NULL_TREE;
+ ret.expr_const_operands = true;
return ret;
}
- ret = parser_xref_tag (code, ident);
+ ret = parser_xref_tag (ident_loc, code, ident);
return ret;
}
struct-declaration:
specifier-qualifier-list struct-declarator-list
+ static_assert-declaration-no-semi
specifier-qualifier-list:
type-specifier specifier-qualifier-list[opt]
restore_extension_diagnostics (ext);
return decl;
}
+ if (c_parser_next_token_is_keyword (parser, RID_STATIC_ASSERT))
+ {
+ c_parser_static_assert_declaration_no_semi (parser);
+ return NULL_TREE;
+ }
specs = build_null_declspecs ();
decl_loc = c_parser_peek_token (parser)->location;
- c_parser_declspecs (parser, specs, false, true, true);
+ c_parser_declspecs (parser, specs, false, true, true, cla_nonabstract_decl);
if (parser->error)
return NULL_TREE;
if (!specs->declspecs_seen_p)
return NULL_TREE;
}
finish_declspecs (specs);
- if (c_parser_next_token_is (parser, CPP_SEMICOLON))
+ if (c_parser_next_token_is (parser, CPP_SEMICOLON)
+ || c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
{
tree ret;
- if (!specs->type_seen_p)
+ if (specs->typespec_kind == ctsk_none)
{
- if (pedantic)
- pedwarn ("%HISO C forbids member declarations with no members",
- &decl_loc);
+ pedwarn (decl_loc, OPT_pedantic,
+ "ISO C forbids member declarations with no members");
shadow_tag_warned (specs, pedantic);
ret = NULL_TREE;
}
structs or unions (which is [a] useful and [b] supports
MS P-SDK). */
tree attrs = NULL;
- ret = grokfield (build_id_declarator (NULL_TREE), specs,
+
+ ret = grokfield (c_parser_peek_token (parser)->location,
+ build_id_declarator (NULL_TREE), specs,
NULL_TREE, &attrs);
if (ret)
decl_attributes (&ret, attrs, 0);
}
return ret;
}
+
+ /* Provide better error recovery. Note that a type name here is valid,
+ and will be treated as a field name. */
+ if (specs->typespec_kind == ctsk_tagdef
+ && TREE_CODE (specs->type) != ENUMERAL_TYPE
+ && c_parser_next_token_starts_declspecs (parser)
+ && !c_parser_next_token_is (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected %<;%>, identifier or %<(%>");
+ parser->error = false;
+ return NULL_TREE;
+ }
+
pending_xref_error ();
prefix_attrs = specs->attrs;
all_prefix_attrs = prefix_attrs;
if (c_parser_next_token_is (parser, CPP_COLON))
declarator = build_id_declarator (NULL_TREE);
else
- declarator = c_parser_declarator (parser, specs->type_seen_p,
+ declarator = c_parser_declarator (parser,
+ specs->typespec_kind != ctsk_none,
C_DTR_NORMAL, &dummy);
if (declarator == NULL)
{
}
if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
postfix_attrs = c_parser_attributes (parser);
- d = grokfield (declarator, specs, width, &all_prefix_attrs);
+ d = grokfield (c_parser_peek_token (parser)->location,
+ declarator, specs, width, &all_prefix_attrs);
decl_attributes (&d, chainon (postfix_attrs,
all_prefix_attrs), 0);
- TREE_CHAIN (d) = decls;
+ DECL_CHAIN (d) = decls;
decls = d;
if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
all_prefix_attrs = chainon (c_parser_attributes (parser),
struct c_typespec ret;
ret.kind = ctsk_typeof;
ret.spec = error_mark_node;
+ ret.expr = NULL_TREE;
+ ret.expr_const_operands = true;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_TYPEOF));
c_parser_consume_token (parser);
- skip_evaluation++;
+ c_inhibit_evaluation_warnings++;
in_typeof++;
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_typeof--;
return ret;
}
- if (c_parser_next_token_starts_typename (parser))
+ if (c_parser_next_tokens_start_typename (parser, cla_prefer_id))
{
struct c_type_name *type = c_parser_type_name (parser);
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_typeof--;
if (type != NULL)
{
- ret.spec = groktypename (type);
+ ret.spec = groktypename (type, &ret.expr, &ret.expr_const_operands);
pop_maybe_used (variably_modified_type_p (ret.spec, NULL_TREE));
}
}
bool was_vm;
location_t here = c_parser_peek_token (parser)->location;
struct c_expr expr = c_parser_expression (parser);
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_typeof--;
if (TREE_CODE (expr.value) == COMPONENT_REF
&& DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1)))
- error ("%H%<typeof%> applied to a bit-field", &here);
+ error_at (here, "%<typeof%> applied to a bit-field");
+ mark_exp_read (expr.value);
ret.spec = TREE_TYPE (expr.value);
was_vm = variably_modified_type_p (ret.spec, NULL_TREE);
- /* This should be returned with the type so that when the type
- is evaluated, this can be evaluated. For now, we avoid
- evaluation when the context might. */
- if (!skip_evaluation && was_vm)
- {
- tree e = expr.value;
+ /* This is returned with the type so that when the type is
+ evaluated, this can be evaluated. */
+ if (was_vm)
+ ret.expr = c_fully_fold (expr.value, false, &ret.expr_const_operands);
+ pop_maybe_used (was_vm);
+ }
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+ return ret;
+}
- /* If the expression is not of a type to which we cannot assign a line
- number, wrap the thing in a no-op NOP_EXPR. */
- if (DECL_P (e) || CONSTANT_CLASS_P (e))
- e = build1 (NOP_EXPR, void_type_node, e);
+/* Parse an alignment-specifier.
- if (CAN_HAVE_LOCATION_P (e))
- SET_EXPR_LOCATION (e, input_location);
+ C11 6.7.5:
- add_stmt (e);
- }
- pop_maybe_used (was_vm);
+ alignment-specifier:
+ _Alignas ( type-name )
+ _Alignas ( constant-expression )
+*/
+
+static tree
+c_parser_alignas_specifier (c_parser * parser)
+{
+ tree ret = error_mark_node;
+ location_t loc = c_parser_peek_token (parser)->location;
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNAS));
+ c_parser_consume_token (parser);
+ if (!flag_isoc11)
+ {
+ if (flag_isoc99)
+ pedwarn (loc, OPT_pedantic,
+ "ISO C99 does not support %<_Alignas%>");
+ else
+ pedwarn (loc, OPT_pedantic,
+ "ISO C90 does not support %<_Alignas%>");
+ }
+ if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
+ return ret;
+ if (c_parser_next_tokens_start_typename (parser, cla_prefer_id))
+ {
+ struct c_type_name *type = c_parser_type_name (parser);
+ if (type != NULL)
+ ret = c_alignof (loc, groktypename (type, NULL, NULL));
}
+ else
+ ret = c_parser_expr_no_commas (parser, NULL).value;
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
return ret;
}
struct c_declspecs *quals_attrs = build_null_declspecs ();
struct c_declarator *inner;
c_parser_consume_token (parser);
- c_parser_declspecs (parser, quals_attrs, false, false, true);
+ c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id);
inner = c_parser_declarator (parser, type_seen_p, kind, seen_id);
if (inner == NULL)
return NULL;
if (kind != C_DTR_ABSTRACT
&& c_parser_next_token_is (parser, CPP_NAME)
&& ((type_seen_p
- && c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME)
+ && (c_parser_peek_token (parser)->id_kind == C_ID_TYPENAME
+ || c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME))
|| c_parser_peek_token (parser)->id_kind == C_ID_ID))
{
struct c_declarator *inner
/* Parse a sequence of array declarators and parameter lists. */
if (c_parser_next_token_is (parser, CPP_OPEN_SQUARE))
{
+ location_t brace_loc = c_parser_peek_token (parser)->location;
struct c_declarator *declarator;
struct c_declspecs *quals_attrs = build_null_declspecs ();
bool static_seen;
bool star_seen;
tree dimen;
c_parser_consume_token (parser);
- c_parser_declspecs (parser, quals_attrs, false, false, true);
+ c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id);
static_seen = c_parser_next_token_is_keyword (parser, RID_STATIC);
if (static_seen)
c_parser_consume_token (parser);
if (static_seen && !quals_attrs->declspecs_seen_p)
- c_parser_declspecs (parser, quals_attrs, false, false, true);
+ c_parser_declspecs (parser, quals_attrs, false, false, true, cla_prefer_id);
if (!quals_attrs->declspecs_seen_p)
quals_attrs = NULL;
/* If "static" is present, there must be an array dimension.
"expected %<]%>");
return NULL;
}
- declarator = build_array_declarator (dimen, quals_attrs, static_seen,
- star_seen);
+ if (dimen)
+ mark_exp_read (dimen);
+ declarator = build_array_declarator (brace_loc, dimen, quals_attrs,
+ static_seen, star_seen);
if (declarator == NULL)
return NULL;
inner = set_array_declarator_inner (declarator, inner);
if (id_list_ok
&& !attrs
&& c_parser_next_token_is (parser, CPP_NAME)
- && c_parser_peek_token (parser)->id_kind == C_ID_ID)
+ && c_parser_peek_token (parser)->id_kind == C_ID_ID
+
+ /* Look ahead to detect typos in type names. */
+ && c_parser_peek_2nd_token (parser)->type != CPP_NAME
+ && c_parser_peek_2nd_token (parser)->type != CPP_MULT
+ && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_PAREN
+ && c_parser_peek_2nd_token (parser)->type != CPP_OPEN_SQUARE)
{
tree list = NULL_TREE, *nextp = &list;
while (c_parser_next_token_is (parser, CPP_NAME)
}
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
- struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
- ret->parms = 0;
- ret->tags = 0;
+ struct c_arg_info *ret = build_arg_info ();
ret->types = list;
- ret->others = 0;
- ret->pending_sizes = 0;
- ret->had_vla_unspec = 0;
c_parser_consume_token (parser);
pop_scope ();
return ret;
}
else
{
- struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs);
+ struct c_arg_info *ret = c_parser_parms_list_declarator (parser, attrs,
+ NULL);
pop_scope ();
return ret;
}
/* Parse a parameter list (possibly empty), including the closing
parenthesis but not the opening one. ATTRS are the attributes at
- the start of the list. */
+ the start of the list. EXPR is NULL or an expression that needs to
+ be evaluated for the side effects of array size expressions in the
+ parameters. */
static struct c_arg_info *
-c_parser_parms_list_declarator (c_parser *parser, tree attrs)
+c_parser_parms_list_declarator (c_parser *parser, tree attrs, tree expr)
{
- bool good_parm = false;
+ bool bad_parm = false;
+
/* ??? Following the old parser, forward parameter declarations may
use abstract declarators, and if no real parameter declarations
follow the forward declarations then this is not diagnosed. Also
declarations. */
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
- struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
- ret->parms = 0;
- ret->tags = 0;
- ret->types = 0;
- ret->others = 0;
- ret->pending_sizes = 0;
- ret->had_vla_unspec = 0;
+ struct c_arg_info *ret = build_arg_info ();
c_parser_consume_token (parser);
return ret;
}
if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
{
- struct c_arg_info *ret = XOBNEW (&parser_obstack, struct c_arg_info);
- ret->parms = 0;
- ret->tags = 0;
- ret->others = 0;
- ret->pending_sizes = 0;
- ret->had_vla_unspec = 0;
- /* Suppress -Wold-style-definition for this case. */
- ret->types = error_mark_node;
- error ("%HISO C requires a named argument before %<...%>",
- &c_parser_peek_token (parser)->location);
+ struct c_arg_info *ret = build_arg_info ();
+
+ if (flag_allow_parameterless_variadic_functions)
+ {
+ /* F (...) is allowed. */
+ ret->types = NULL_TREE;
+ }
+ else
+ {
+ /* Suppress -Wold-style-definition for this case. */
+ ret->types = error_mark_node;
+ error_at (c_parser_peek_token (parser)->location,
+ "ISO C requires a named argument before %<...%>");
+ }
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
/* Parse a parameter. */
struct c_parm *parm = c_parser_parameter_declaration (parser, attrs);
attrs = NULL_TREE;
- if (parm != NULL)
- {
- good_parm = true;
- push_parm_decl (parm);
- }
+ if (parm == NULL)
+ bad_parm = true;
+ else
+ push_parm_decl (parm, &expr);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
tree new_attrs;
c_parser_consume_token (parser);
mark_forward_parm_decls ();
new_attrs = c_parser_attributes (parser);
- return c_parser_parms_list_declarator (parser, new_attrs);
+ return c_parser_parms_list_declarator (parser, new_attrs, expr);
}
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
c_parser_consume_token (parser);
- if (good_parm)
- return get_parm_info (false);
+ if (bad_parm)
+ return NULL;
else
- {
- struct c_arg_info *ret
- = XOBNEW (&parser_obstack, struct c_arg_info);
- ret->parms = 0;
- ret->tags = 0;
- ret->types = 0;
- ret->others = 0;
- ret->pending_sizes = 0;
- ret->had_vla_unspec = 0;
- return ret;
- }
+ return get_parm_info (false, expr);
}
if (!c_parser_require (parser, CPP_COMMA,
"expected %<;%>, %<,%> or %<)%>"))
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
c_parser_consume_token (parser);
- if (good_parm)
- return get_parm_info (true);
+ if (bad_parm)
+ return NULL;
else
- {
- struct c_arg_info *ret
- = XOBNEW (&parser_obstack, struct c_arg_info);
- ret->parms = 0;
- ret->tags = 0;
- ret->types = 0;
- ret->others = 0;
- ret->pending_sizes = 0;
- ret->had_vla_unspec = 0;
- return ret;
- }
+ return get_parm_info (true, expr);
}
else
{
bool dummy = false;
if (!c_parser_next_token_starts_declspecs (parser))
{
+ c_token *token = c_parser_peek_token (parser);
+ if (parser->error)
+ return NULL;
+ c_parser_set_source_position_from_token (token);
+ if (c_parser_next_tokens_start_typename (parser, cla_prefer_type))
+ {
+ error ("unknown type name %qE", token->value);
+ parser->error = true;
+ }
/* ??? In some Objective-C cases '...' isn't applicable so there
should be a different message. */
- c_parser_error (parser,
- "expected declaration specifiers or %<...%>");
+ else
+ c_parser_error (parser,
+ "expected declaration specifiers or %<...%>");
c_parser_skip_to_end_of_parameter (parser);
return NULL;
}
declspecs_add_attrs (specs, attrs);
attrs = NULL_TREE;
}
- c_parser_declspecs (parser, specs, true, true, true);
+ c_parser_declspecs (parser, specs, true, true, true, cla_nonabstract_decl);
finish_declspecs (specs);
pending_xref_error ();
prefix_attrs = specs->attrs;
specs->attrs = NULL_TREE;
- declarator = c_parser_declarator (parser, specs->type_seen_p,
+ declarator = c_parser_declarator (parser,
+ specs->typespec_kind != ctsk_none,
C_DTR_PARM, &dummy);
if (declarator == NULL)
{
c_parser_asm_string_literal (c_parser *parser)
{
tree str;
+ int save_flag = warn_overlength_strings;
+ warn_overlength_strings = 0;
if (c_parser_next_token_is (parser, CPP_STRING))
{
str = c_parser_peek_token (parser)->value;
}
else if (c_parser_next_token_is (parser, CPP_WSTRING))
{
- error ("%Hwide string literal in %<asm%>",
- &c_parser_peek_token (parser)->location);
+ error_at (c_parser_peek_token (parser)->location,
+ "wide string literal in %<asm%>");
str = build_string (1, "");
c_parser_consume_token (parser);
}
c_parser_error (parser, "expected string literal");
str = NULL_TREE;
}
+ warn_overlength_strings = save_flag;
return str;
}
return str;
}
+static tree
+c_parser_attribute_any_word (c_parser *parser)
+{
+ tree attr_name = NULL_TREE;
+
+ if (c_parser_next_token_is (parser, CPP_KEYWORD))
+ {
+ /* ??? See comment above about what keywords are accepted here. */
+ bool ok;
+ switch (c_parser_peek_token (parser)->keyword)
+ {
+ case RID_STATIC:
+ case RID_UNSIGNED:
+ case RID_LONG:
+ case RID_INT128:
+ case RID_CONST:
+ case RID_EXTERN:
+ case RID_REGISTER:
+ case RID_TYPEDEF:
+ case RID_SHORT:
+ case RID_INLINE:
+ case RID_NORETURN:
+ case RID_VOLATILE:
+ case RID_SIGNED:
+ case RID_AUTO:
+ case RID_RESTRICT:
+ case RID_COMPLEX:
+ case RID_THREAD:
+ case RID_INT:
+ case RID_CHAR:
+ case RID_FLOAT:
+ case RID_DOUBLE:
+ case RID_VOID:
+ case RID_DFLOAT32:
+ case RID_DFLOAT64:
+ case RID_DFLOAT128:
+ case RID_BOOL:
+ case RID_FRACT:
+ case RID_ACCUM:
+ case RID_SAT:
+ case RID_TRANSACTION_ATOMIC:
+ case RID_TRANSACTION_CANCEL:
+ ok = true;
+ break;
+ default:
+ ok = false;
+ break;
+ }
+ if (!ok)
+ return NULL_TREE;
+
+ /* Accept __attribute__((__const)) as __attribute__((const)) etc. */
+ attr_name = ridpointers[(int) c_parser_peek_token (parser)->keyword];
+ }
+ else if (c_parser_next_token_is (parser, CPP_NAME))
+ attr_name = c_parser_peek_token (parser)->value;
+
+ return attr_name;
+}
+
/* Parse (possibly empty) attributes. This is a GNU extension.
attributes:
|| c_parser_next_token_is (parser, CPP_KEYWORD))
{
tree attr, attr_name, attr_args;
+ VEC(tree,gc) *expr_list;
if (c_parser_next_token_is (parser, CPP_COMMA))
{
c_parser_consume_token (parser);
continue;
}
- if (c_parser_next_token_is (parser, CPP_KEYWORD))
- {
- /* ??? See comment above about what keywords are
- accepted here. */
- bool ok;
- switch (c_parser_peek_token (parser)->keyword)
- {
- case RID_STATIC:
- case RID_UNSIGNED:
- case RID_LONG:
- case RID_CONST:
- case RID_EXTERN:
- case RID_REGISTER:
- case RID_TYPEDEF:
- case RID_SHORT:
- case RID_INLINE:
- case RID_VOLATILE:
- case RID_SIGNED:
- case RID_AUTO:
- case RID_RESTRICT:
- case RID_COMPLEX:
- case RID_THREAD:
- case RID_INT:
- case RID_CHAR:
- case RID_FLOAT:
- case RID_DOUBLE:
- case RID_VOID:
- case RID_DFLOAT32:
- case RID_DFLOAT64:
- case RID_DFLOAT128:
- case RID_BOOL:
- case RID_FRACT:
- case RID_ACCUM:
- case RID_SAT:
- ok = true;
- break;
- default:
- ok = false;
- break;
- }
- if (!ok)
- break;
- }
- attr_name = c_parser_peek_token (parser)->value;
+
+ attr_name = c_parser_attribute_any_word (parser);
+ if (attr_name == NULL)
+ break;
c_parser_consume_token (parser);
if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN))
{
/* Parse the attribute contents. If they start with an
identifier which is followed by a comma or close
parenthesis, then the arguments start with that
- identifier; otherwise they are an expression list. */
+ identifier; otherwise they are an expression list.
+ In objective-c the identifier may be a classname. */
if (c_parser_next_token_is (parser, CPP_NAME)
- && c_parser_peek_token (parser)->id_kind == C_ID_ID
+ && (c_parser_peek_token (parser)->id_kind == C_ID_ID
+ || (c_dialect_objc ()
+ && c_parser_peek_token (parser)->id_kind == C_ID_CLASSNAME))
&& ((c_parser_peek_2nd_token (parser)->type == CPP_COMMA)
|| (c_parser_peek_2nd_token (parser)->type
== CPP_CLOSE_PAREN)))
attr_args = build_tree_list (NULL_TREE, arg1);
else
{
+ tree tree_list;
c_parser_consume_token (parser);
- attr_args = tree_cons (NULL_TREE, arg1,
- c_parser_expr_list (parser, false));
+ expr_list = c_parser_expr_list (parser, false, true, NULL);
+ tree_list = build_tree_list_vec (expr_list);
+ attr_args = tree_cons (NULL_TREE, arg1, tree_list);
+ release_tree_vector (expr_list);
}
}
else
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
attr_args = NULL_TREE;
else
- attr_args = c_parser_expr_list (parser, false);
+ {
+ expr_list = c_parser_expr_list (parser, false, true, NULL);
+ attr_args = build_tree_list_vec (expr_list);
+ release_tree_vector (expr_list);
+ }
}
attr = build_tree_list (attr_name, attr_args);
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
struct c_declarator *declarator;
struct c_type_name *ret;
bool dummy = false;
- c_parser_declspecs (parser, specs, false, true, true);
+ c_parser_declspecs (parser, specs, false, true, true, cla_prefer_type);
if (!specs->declspecs_seen_p)
{
c_parser_error (parser, "expected specifier-qualifier-list");
return NULL;
}
- pending_xref_error ();
- finish_declspecs (specs);
- declarator = c_parser_declarator (parser, specs->type_seen_p,
+ if (specs->type != error_mark_node)
+ {
+ pending_xref_error ();
+ finish_declspecs (specs);
+ }
+ declarator = c_parser_declarator (parser,
+ specs->typespec_kind != ctsk_none,
C_DTR_ABSTRACT, &dummy);
if (declarator == NULL)
return NULL;
else
{
struct c_expr ret;
+ location_t loc = c_parser_peek_token (parser)->location;
ret = c_parser_expr_no_commas (parser, NULL);
if (TREE_CODE (ret.value) != STRING_CST
&& TREE_CODE (ret.value) != COMPOUND_LITERAL_EXPR)
- ret = default_function_array_conversion (ret);
+ ret = default_function_array_read_conversion (loc, ret);
return ret;
}
}
static struct c_expr
c_parser_braced_init (c_parser *parser, tree type, bool nested_p)
{
+ struct c_expr ret;
+ struct obstack braced_init_obstack;
location_t brace_loc = c_parser_peek_token (parser)->location;
+ gcc_obstack_init (&braced_init_obstack);
gcc_assert (c_parser_next_token_is (parser, CPP_OPEN_BRACE));
c_parser_consume_token (parser);
if (nested_p)
- push_init_level (0);
+ push_init_level (0, &braced_init_obstack);
else
really_start_incremental_init (type);
if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
{
- if (pedantic)
- pedwarn ("%HISO C forbids empty initializer braces", &brace_loc);
+ pedwarn (brace_loc, OPT_pedantic, "ISO C forbids empty initializer braces");
}
else
{
comma. */
while (true)
{
- c_parser_initelt (parser);
+ c_parser_initelt (parser, &braced_init_obstack);
if (parser->error)
break;
if (c_parser_next_token_is (parser, CPP_COMMA))
}
if (c_parser_next_token_is_not (parser, CPP_CLOSE_BRACE))
{
- struct c_expr ret;
ret.value = error_mark_node;
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, "expected %<}%>");
+ pop_init_level (0, &braced_init_obstack);
+ obstack_free (&braced_init_obstack, NULL);
return ret;
}
c_parser_consume_token (parser);
- return pop_init_level (0);
+ ret = pop_init_level (0, &braced_init_obstack);
+ obstack_free (&braced_init_obstack, NULL);
+ return ret;
}
/* Parse a nested initializer, including designators. */
static void
-c_parser_initelt (c_parser *parser)
+c_parser_initelt (c_parser *parser, struct obstack * braced_init_obstack)
{
/* Parse any designator or designator list. A single array
designator may have the subsequent "=" omitted in GNU C, but a
&& c_parser_peek_2nd_token (parser)->type == CPP_COLON)
{
/* Old-style structure member designator. */
- set_init_label (c_parser_peek_token (parser)->value);
- if (pedantic)
- {
- /* Use the colon as the error location. */
- pedwarn ("%Hobsolete use of designated initializer with %<:%>",
- &c_parser_peek_2nd_token (parser)->location);
- }
+ set_init_label (c_parser_peek_token (parser)->value,
+ braced_init_obstack);
+ /* Use the colon as the error location. */
+ pedwarn (c_parser_peek_2nd_token (parser)->location, OPT_pedantic,
+ "obsolete use of designated initializer with %<:%>");
c_parser_consume_token (parser);
c_parser_consume_token (parser);
}
has been a single array designator and 2 otherwise. */
int des_seen = 0;
/* Location of a designator. */
- location_t des_loc;
+ location_t des_loc = UNKNOWN_LOCATION; /* Quiet warning. */
while (c_parser_next_token_is (parser, CPP_OPEN_SQUARE)
|| c_parser_next_token_is (parser, CPP_DOT))
{
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_NAME))
{
- set_init_label (c_parser_peek_token (parser)->value);
+ set_init_label (c_parser_peek_token (parser)->value,
+ braced_init_obstack);
c_parser_consume_token (parser);
}
else
struct c_expr init;
init.value = error_mark_node;
init.original_code = ERROR_MARK;
+ init.original_type = NULL;
c_parser_error (parser, "expected identifier");
c_parser_skip_until_found (parser, CPP_COMMA, NULL);
- process_init_element (init);
+ process_init_element (init, false, braced_init_obstack);
return;
}
}
else
{
tree first, second;
- location_t ellipsis_loc;
+ location_t ellipsis_loc = UNKNOWN_LOCATION; /* Quiet warning. */
/* ??? Following the old parser, [ objc-receiver
objc-message-args ] is accepted as an initializer,
being distinguished from a designator by what follows
goto parse_message_args;
}
first = c_parser_expr_no_commas (parser, NULL).value;
+ mark_exp_read (first);
if (c_parser_next_token_is (parser, CPP_ELLIPSIS)
|| c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
goto array_desig_after_first;
while (c_parser_next_token_is (parser, CPP_COMMA))
{
struct c_expr next;
+ location_t comma_loc, exp_loc;
+ comma_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
next = c_parser_expr_no_commas (parser, NULL);
- next = default_function_array_conversion (next);
- rec = build_compound_expr (rec, next.value);
+ next = default_function_array_read_conversion (exp_loc,
+ next);
+ rec = build_compound_expr (comma_loc, rec, next.value);
}
parse_message_args:
/* Now parse the objc-message-args. */
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
mexpr.value
- = objc_build_message_expr (build_tree_list (rec, args));
+ = objc_build_message_expr (rec, args);
mexpr.original_code = ERROR_MARK;
+ mexpr.original_type = NULL;
/* Now parse and process the remainder of the
initializer, starting with this message
expression as a primary-expression. */
- c_parser_initval (parser, &mexpr);
+ c_parser_initval (parser, &mexpr, braced_init_obstack);
return;
}
c_parser_consume_token (parser);
first = c_parser_expr_no_commas (parser, NULL).value;
+ mark_exp_read (first);
array_desig_after_first:
if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
{
ellipsis_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
second = c_parser_expr_no_commas (parser, NULL).value;
+ mark_exp_read (second);
}
else
second = NULL_TREE;
if (c_parser_next_token_is (parser, CPP_CLOSE_SQUARE))
{
c_parser_consume_token (parser);
- set_init_index (first, second);
- if (pedantic && second)
- pedwarn ("%HISO C forbids specifying range of "
- "elements to initialize", &ellipsis_loc);
+ set_init_index (first, second, braced_init_obstack);
+ if (second)
+ pedwarn (ellipsis_loc, OPT_pedantic,
+ "ISO C forbids specifying range of elements to initialize");
}
else
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
{
if (c_parser_next_token_is (parser, CPP_EQ))
{
- if (pedantic && !flag_isoc99)
- pedwarn ("%HISO C90 forbids specifying subobject "
- "to initialize", &des_loc);
+ if (!flag_isoc99)
+ pedwarn (des_loc, OPT_pedantic,
+ "ISO C90 forbids specifying subobject to initialize");
c_parser_consume_token (parser);
}
else
{
if (des_seen == 1)
- {
- if (pedantic)
- pedwarn ("%Hobsolete use of designated initializer "
- "without %<=%>",
- &c_parser_peek_token (parser)->location);
- }
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "obsolete use of designated initializer without %<=%>");
else
{
struct c_expr init;
init.value = error_mark_node;
init.original_code = ERROR_MARK;
+ init.original_type = NULL;
c_parser_error (parser, "expected %<=%>");
c_parser_skip_until_found (parser, CPP_COMMA, NULL);
- process_init_element (init);
+ process_init_element (init, false, braced_init_obstack);
return;
}
}
}
}
- c_parser_initval (parser, NULL);
+ c_parser_initval (parser, NULL, braced_init_obstack);
}
/* Parse a nested initializer; as c_parser_initializer but parses
initializer. */
static void
-c_parser_initval (c_parser *parser, struct c_expr *after)
+c_parser_initval (c_parser *parser, struct c_expr *after,
+ struct obstack * braced_init_obstack)
{
struct c_expr init;
gcc_assert (!after || c_dialect_objc ());
init = c_parser_braced_init (parser, NULL_TREE, true);
else
{
+ location_t loc = c_parser_peek_token (parser)->location;
init = c_parser_expr_no_commas (parser, after);
if (init.value != NULL_TREE
&& TREE_CODE (init.value) != STRING_CST
&& TREE_CODE (init.value) != COMPOUND_LITERAL_EXPR)
- init = default_function_array_conversion (init);
+ init = default_function_array_read_conversion (loc, init);
}
- process_init_element (init);
+ process_init_element (init, false, braced_init_obstack);
}
/* Parse a compound statement (possibly a function body) (C90 6.6.2,
old parser in requiring something after label declarations.
Although they are erroneous if the labels declared aren't defined,
is it useful for the syntax to be this way?
-
+
OpenMP:
-
+
block-item:
openmp-directive
c_parser_compound_statement (c_parser *parser)
{
tree stmt;
+ location_t brace_loc;
+ brace_loc = c_parser_peek_token (parser)->location;
if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
- return error_mark_node;
+ {
+ /* Ensure a scope is entered and left anyway to avoid confusion
+ if we have just prepared to enter a function body. */
+ stmt = c_begin_compound_stmt (true);
+ c_end_compound_stmt (brace_loc, stmt, true);
+ return error_mark_node;
+ }
stmt = c_begin_compound_stmt (true);
c_parser_compound_statement_nostart (parser);
- return c_end_compound_stmt (stmt, true);
+ return c_end_compound_stmt (brace_loc, stmt, true);
}
/* Parse a compound statement except for the opening brace. This is
{
bool last_stmt = false;
bool last_label = false;
- location_t label_loc;
+ bool save_valid_for_pragma = valid_location_for_stdc_pragma_p ();
+ location_t label_loc = UNKNOWN_LOCATION; /* Quiet warning. */
if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
{
c_parser_consume_token (parser);
return;
}
+ mark_valid_location_for_stdc_pragma (true);
if (c_parser_next_token_is_keyword (parser, RID_LABEL))
{
- location_t err_loc = c_parser_peek_token (parser)->location;
/* Read zero or more forward-declarations for labels that nested
functions can jump to. */
+ mark_valid_location_for_stdc_pragma (false);
while (c_parser_next_token_is_keyword (parser, RID_LABEL))
{
+ label_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
/* Any identifiers, including those declared as type names,
are OK here. */
label
= declare_label (c_parser_peek_token (parser)->value);
C_DECLARED_LABEL_FLAG (label) = 1;
- add_stmt (build_stmt (DECL_EXPR, label));
+ add_stmt (build_stmt (label_loc, DECL_EXPR, label));
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COMMA))
c_parser_consume_token (parser);
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
- if (pedantic)
- pedwarn ("%HISO C forbids label declarations", &err_loc);
+ pedwarn (label_loc, OPT_pedantic, "ISO C forbids label declarations");
}
/* We must now have at least one statement, label or declaration. */
if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
{
+ mark_valid_location_for_stdc_pragma (save_valid_for_pragma);
c_parser_error (parser, "expected declaration or statement");
c_parser_consume_token (parser);
return;
label_loc = c_parser_peek_token (parser)->location;
last_label = true;
last_stmt = false;
+ mark_valid_location_for_stdc_pragma (false);
c_parser_label (parser);
}
else if (!last_label
- && c_parser_next_token_starts_declspecs (parser))
+ && c_parser_next_tokens_start_declaration (parser))
{
last_label = false;
- c_parser_declaration_or_fndef (parser, true, true, true, true);
- if (last_stmt
- && ((pedantic && !flag_isoc99)
- || warn_declaration_after_statement))
- pedwarn_c90 ("%HISO C90 forbids mixed declarations and code",
- &loc);
+ mark_valid_location_for_stdc_pragma (false);
+ c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL);
+ if (last_stmt)
+ pedwarn_c90 (loc,
+ (pedantic && !flag_isoc99)
+ ? OPT_pedantic
+ : OPT_Wdeclaration_after_statement,
+ "ISO C90 forbids mixed declarations and code");
last_stmt = false;
}
else if (!last_label
&& (c_parser_peek_2nd_token (parser)->keyword
== RID_EXTENSION))
c_parser_consume_token (parser);
- if (c_token_starts_declspecs (c_parser_peek_2nd_token (parser)))
+ if (c_token_starts_declaration (c_parser_peek_2nd_token (parser)))
{
int ext;
ext = disable_extension_diagnostics ();
c_parser_consume_token (parser);
last_label = false;
- c_parser_declaration_or_fndef (parser, true, true, true, true);
+ mark_valid_location_for_stdc_pragma (false);
+ c_parser_declaration_or_fndef (parser, true, true, true, true,
+ true, NULL);
/* Following the old parser, __extension__ does not
disable this diagnostic. */
restore_extension_diagnostics (ext);
- if (last_stmt
- && ((pedantic && !flag_isoc99)
- || warn_declaration_after_statement))
- pedwarn_c90 ("%HISO C90 forbids mixed declarations and code",
- &loc);
+ if (last_stmt)
+ pedwarn_c90 (loc, (pedantic && !flag_isoc99)
+ ? OPT_pedantic
+ : OPT_Wdeclaration_after_statement,
+ "ISO C90 forbids mixed declarations and code");
last_stmt = false;
}
else
}
else if (c_parser_next_token_is (parser, CPP_EOF))
{
+ mark_valid_location_for_stdc_pragma (save_valid_for_pragma);
c_parser_error (parser, "expected declaration or statement");
return;
}
else if (c_parser_next_token_is_keyword (parser, RID_ELSE))
{
- if (parser->in_if_block)
+ if (parser->in_if_block)
{
- error ("%H""expected %<}%> before %<else%>", &loc);
+ mark_valid_location_for_stdc_pragma (save_valid_for_pragma);
+ error_at (loc, """expected %<}%> before %<else%>");
return;
}
- else
+ else
{
- error ("%H%<else%> without a previous %<if%>", &loc);
+ error_at (loc, "%<else%> without a previous %<if%>");
c_parser_consume_token (parser);
continue;
}
statement:
last_label = false;
last_stmt = true;
+ mark_valid_location_for_stdc_pragma (false);
c_parser_statement_after_labels (parser);
}
parser->error = false;
}
if (last_label)
- error ("%Hlabel at end of compound statement", &label_loc);
+ error_at (label_loc, "label at end of compound statement");
c_parser_consume_token (parser);
+ /* Restore the value we started with. */
+ mark_valid_location_for_stdc_pragma (save_valid_for_pragma);
}
/* Parse a label (C90 6.6.1, C99 6.8.1).
if (c_parser_next_token_is (parser, CPP_COLON))
{
c_parser_consume_token (parser);
- label = do_case (exp1, NULL_TREE);
+ label = do_case (loc1, exp1, NULL_TREE);
}
else if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
{
c_parser_consume_token (parser);
exp2 = c_parser_expr_no_commas (parser, NULL).value;
if (c_parser_require (parser, CPP_COLON, "expected %<:%>"))
- label = do_case (exp1, exp2);
+ label = do_case (loc1, exp1, exp2);
}
else
c_parser_error (parser, "expected %<:%> or %<...%>");
{
c_parser_consume_token (parser);
if (c_parser_require (parser, CPP_COLON, "expected %<:%>"))
- label = do_case (NULL_TREE, NULL_TREE);
+ label = do_case (loc1, NULL_TREE, NULL_TREE);
}
else
{
if (tlab)
{
decl_attributes (&tlab, attrs, 0);
- label = add_stmt (build_stmt (LABEL_EXPR, tlab));
+ label = add_stmt (build_stmt (loc1, LABEL_EXPR, tlab));
}
}
if (label)
{
- SET_EXPR_LOCATION (label, loc1);
- if (c_parser_next_token_starts_declspecs (parser)
- && !(c_parser_next_token_is (parser, CPP_NAME)
- && c_parser_peek_2nd_token (parser)->type == CPP_COLON))
+ if (c_parser_next_tokens_start_declaration (parser))
{
- error ("%Ha label can only be part of a statement and "
- "a declaration is not a statement",
- &c_parser_peek_token (parser)->location);
- c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false,
+ error_at (c_parser_peek_token (parser)->location,
+ "a label can only be part of a statement and "
+ "a declaration is not a statement");
+ c_parser_declaration_or_fndef (parser, /*fndef_ok*/ false,
+ /*static_assert_ok*/ true,
/*nested*/ true, /*empty_ok*/ false,
- /*start_attr_ok*/ true);
+ /*start_attr_ok*/ true, NULL);
}
}
}
atomic-directive expression-statement
ordered-construct:
- ordered-directive structured-block */
+ ordered-directive structured-block
+
+ Transactional Memory:
+
+ statement:
+ transaction-statement
+ transaction-cancel-statement
+*/
static void
c_parser_statement (c_parser *parser)
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_NAME))
{
- stmt = c_finish_goto_label (c_parser_peek_token (parser)->value);
+ stmt = c_finish_goto_label (loc,
+ c_parser_peek_token (parser)->value);
c_parser_consume_token (parser);
}
else if (c_parser_next_token_is (parser, CPP_MULT))
{
+ tree val;
+
c_parser_consume_token (parser);
- stmt = c_finish_goto_ptr (c_parser_expression (parser).value);
+ val = c_parser_expression (parser).value;
+ mark_exp_read (val);
+ stmt = c_finish_goto_ptr (loc, val);
}
else
c_parser_error (parser, "expected identifier or %<*%>");
goto expect_semicolon;
case RID_CONTINUE:
c_parser_consume_token (parser);
- stmt = c_finish_bc_stmt (&c_cont_label, false);
+ stmt = c_finish_bc_stmt (loc, &c_cont_label, false);
goto expect_semicolon;
case RID_BREAK:
c_parser_consume_token (parser);
- stmt = c_finish_bc_stmt (&c_break_label, true);
+ stmt = c_finish_bc_stmt (loc, &c_break_label, true);
goto expect_semicolon;
case RID_RETURN:
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- stmt = c_finish_return (NULL_TREE);
+ stmt = c_finish_return (loc, NULL_TREE, NULL_TREE);
c_parser_consume_token (parser);
}
else
{
- stmt = c_finish_return (c_parser_expression_conv (parser).value);
+ struct c_expr expr = c_parser_expression_conv (parser);
+ mark_exp_read (expr.value);
+ stmt = c_finish_return (loc, expr.value, expr.original_type);
goto expect_semicolon;
}
break;
case RID_ASM:
stmt = c_parser_asm_statement (parser);
break;
+ case RID_TRANSACTION_ATOMIC:
+ case RID_TRANSACTION_RELAXED:
+ stmt = c_parser_transaction (parser,
+ c_parser_peek_token (parser)->keyword);
+ break;
+ case RID_TRANSACTION_CANCEL:
+ stmt = c_parser_transaction_cancel (parser);
+ goto expect_semicolon;
case RID_AT_THROW:
gcc_assert (c_dialect_objc ());
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- stmt = objc_build_throw_stmt (NULL_TREE);
+ stmt = objc_build_throw_stmt (loc, NULL_TREE);
c_parser_consume_token (parser);
}
else
{
- stmt
- = objc_build_throw_stmt (c_parser_expression (parser).value);
+ tree expr = c_parser_expression (parser).value;
+ expr = c_fully_fold (expr, false, NULL);
+ stmt = objc_build_throw_stmt (loc, expr);
goto expect_semicolon;
}
break;
case RID_AT_TRY:
gcc_assert (c_dialect_objc ());
- c_parser_objc_try_catch_statement (parser);
+ c_parser_objc_try_catch_finally_statement (parser);
break;
case RID_AT_SYNCHRONIZED:
gcc_assert (c_dialect_objc ());
break;
default:
expr_stmt:
- stmt = c_finish_expr_stmt (c_parser_expression_conv (parser).value);
+ stmt = c_finish_expr_stmt (loc, c_parser_expression_conv (parser).value);
expect_semicolon:
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
break;
(recursively) all of the component statements should already have
line numbers assigned. ??? Can we discard no-op statements
earlier? */
- if (stmt && CAN_HAVE_LOCATION_P (stmt))
+ if (CAN_HAVE_LOCATION_P (stmt)
+ && EXPR_LOCATION (stmt) == UNKNOWN_LOCATION)
SET_EXPR_LOCATION (stmt, loc);
parser->in_if_block = in_if_block;
}
+/* Parse the condition from an if, do, while or for statements. */
+
+static tree
+c_parser_condition (c_parser *parser)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ tree cond;
+ cond = c_parser_expression_conv (parser).value;
+ cond = c_objc_common_truthvalue_conversion (loc, cond);
+ cond = c_fully_fold (cond, false, NULL);
+ if (warn_sequence_point)
+ verify_sequence_points (cond);
+ return cond;
+}
+
/* Parse a parenthesized condition from an if, do or while statement.
condition:
static tree
c_parser_paren_condition (c_parser *parser)
{
- location_t loc;
tree cond;
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
return error_mark_node;
- loc = c_parser_peek_token (parser)->location;
- cond = c_objc_common_truthvalue_conversion
- (c_parser_expression_conv (parser).value);
- if (CAN_HAVE_LOCATION_P (cond))
- SET_EXPR_LOCATION (cond, loc);
+ cond = c_parser_condition (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
return cond;
}
c_parser_c99_block_statement (c_parser *parser)
{
tree block = c_begin_compound_stmt (flag_isoc99);
+ location_t loc = c_parser_peek_token (parser)->location;
c_parser_statement (parser);
- return c_end_compound_stmt (block, flag_isoc99);
+ return c_end_compound_stmt (loc, block, flag_isoc99);
}
/* Parse the body of an if statement. This is just parsing a
c_parser_if_body (c_parser *parser, bool *if_p)
{
tree block = c_begin_compound_stmt (flag_isoc99);
+ location_t body_loc = c_parser_peek_token (parser)->location;
while (c_parser_next_token_is_keyword (parser, RID_CASE)
|| c_parser_next_token_is_keyword (parser, RID_DEFAULT)
|| (c_parser_next_token_is (parser, CPP_NAME)
*if_p = c_parser_next_token_is_keyword (parser, RID_IF);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- add_stmt (build_empty_stmt ());
+ location_t loc = c_parser_peek_token (parser)->location;
+ add_stmt (build_empty_stmt (loc));
c_parser_consume_token (parser);
+ if (!c_parser_next_token_is_keyword (parser, RID_ELSE))
+ warning_at (loc, OPT_Wempty_body,
+ "suggest braces around empty body in an %<if%> statement");
}
else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
add_stmt (c_parser_compound_statement (parser));
else
c_parser_statement_after_labels (parser);
- return c_end_compound_stmt (block, flag_isoc99);
+ return c_end_compound_stmt (body_loc, block, flag_isoc99);
}
/* Parse the else body of an if statement. This is just parsing a
static tree
c_parser_else_body (c_parser *parser)
{
+ location_t else_loc = c_parser_peek_token (parser)->location;
tree block = c_begin_compound_stmt (flag_isoc99);
while (c_parser_next_token_is_keyword (parser, RID_CASE)
|| c_parser_next_token_is_keyword (parser, RID_DEFAULT)
c_parser_label (parser);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- add_stmt (build_empty_stmt ());
+ location_t loc = c_parser_peek_token (parser)->location;
+ warning_at (loc,
+ OPT_Wempty_body,
+ "suggest braces around empty body in an %<else%> statement");
+ add_stmt (build_empty_stmt (loc));
c_parser_consume_token (parser);
}
- else
+ else
c_parser_statement_after_labels (parser);
- return c_end_compound_stmt (block, flag_isoc99);
+ return c_end_compound_stmt (else_loc, block, flag_isoc99);
}
/* Parse an if statement (C90 6.6.4, C99 6.8.4).
else
second_body = NULL_TREE;
c_finish_if_stmt (loc, cond, first_body, second_body, first_if);
- add_stmt (c_end_compound_stmt (block, flag_isoc99));
+ add_stmt (c_end_compound_stmt (loc, block, flag_isoc99));
}
/* Parse a switch statement (C90 6.6.4, C99 6.8.4).
c_parser_switch_statement (c_parser *parser)
{
tree block, expr, body, save_break;
+ location_t switch_loc = c_parser_peek_token (parser)->location;
+ location_t switch_cond_loc;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_SWITCH));
c_parser_consume_token (parser);
block = c_begin_compound_stmt (flag_isoc99);
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
+ switch_cond_loc = c_parser_peek_token (parser)->location;
expr = c_parser_expression (parser).value;
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
}
else
- expr = error_mark_node;
- c_start_case (expr);
+ {
+ switch_cond_loc = UNKNOWN_LOCATION;
+ expr = error_mark_node;
+ }
+ c_start_case (switch_loc, switch_cond_loc, expr);
save_break = c_break_label;
c_break_label = NULL_TREE;
body = c_parser_c99_block_statement (parser);
c_finish_case (body);
if (c_break_label)
- add_stmt (build1 (LABEL_EXPR, void_type_node, c_break_label));
+ {
+ location_t here = c_parser_peek_token (parser)->location;
+ tree t = build1 (LABEL_EXPR, void_type_node, c_break_label);
+ SET_EXPR_LOCATION (t, here);
+ add_stmt (t);
+ }
c_break_label = save_break;
- add_stmt (c_end_compound_stmt (block, flag_isoc99));
+ add_stmt (c_end_compound_stmt (switch_loc, block, flag_isoc99));
}
/* Parse a while statement (C90 6.6.5, C99 6.8.5).
c_cont_label = NULL_TREE;
body = c_parser_c99_block_statement (parser);
c_finish_loop (loc, cond, NULL, body, c_break_label, c_cont_label, true);
- add_stmt (c_end_compound_stmt (block, flag_isoc99));
+ add_stmt (c_end_compound_stmt (loc, block, flag_isoc99));
c_break_label = save_break;
c_cont_label = save_cont;
}
gcc_assert (c_parser_next_token_is_keyword (parser, RID_DO));
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
- warning (OPT_Wempty_body,
- "%Hsuggest braces around empty body in %<do%> statement",
- &c_parser_peek_token (parser)->location);
+ warning_at (c_parser_peek_token (parser)->location,
+ OPT_Wempty_body,
+ "suggest braces around empty body in %<do%> statement");
block = c_begin_compound_stmt (flag_isoc99);
loc = c_parser_peek_token (parser)->location;
save_break = c_break_label;
if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
c_parser_skip_to_end_of_block_or_statement (parser);
c_finish_loop (loc, cond, NULL, body, new_break, new_cont, false);
- add_stmt (c_end_compound_stmt (block, flag_isoc99));
+ add_stmt (c_end_compound_stmt (loc, block, flag_isoc99));
}
/* Parse a for statement (C90 6.6.5, C99 6.8.5).
Note in particular that the nested function does not include a
trailing ';', whereas the "declaration" production includes one.
Also, can we reject bad declarations earlier and cheaper than
- check_for_loop_decls? */
+ check_for_loop_decls?
+
+ In Objective-C, there are two additional variants:
+
+ foreach-statement:
+ for ( expression in expresssion ) statement
+ for ( declaration in expression ) statement
+
+ This is inconsistent with C, because the second variant is allowed
+ even if c99 is not enabled.
+
+ The rest of the comment documents these Objective-C foreach-statement.
+
+ Here is the canonical example of the first variant:
+ for (object in array) { do something with object }
+ we call the first expression ("object") the "object_expression" and
+ the second expression ("array") the "collection_expression".
+ object_expression must be an lvalue of type "id" (a generic Objective-C
+ object) because the loop works by assigning to object_expression the
+ various objects from the collection_expression. collection_expression
+ must evaluate to something of type "id" which responds to the method
+ countByEnumeratingWithState:objects:count:.
+
+ The canonical example of the second variant is:
+ for (id object in array) { do something with object }
+ which is completely equivalent to
+ {
+ id object;
+ for (object in array) { do something with object }
+ }
+ Note that initizializing 'object' in some way (eg, "for ((object =
+ xxx) in array) { do something with object }") is possibly
+ technically valid, but completely pointless as 'object' will be
+ assigned to something else as soon as the loop starts. We should
+ most likely reject it (TODO).
+
+ The beginning of the Objective-C foreach-statement looks exactly
+ like the beginning of the for-statement, and we can tell it is a
+ foreach-statement only because the initial declaration or
+ expression is terminated by 'in' instead of ';'.
+*/
static void
c_parser_for_statement (c_parser *parser)
{
tree block, cond, incr, save_break, save_cont, body;
- location_t loc;
+ /* The following are only used when parsing an ObjC foreach statement. */
+ tree object_expression;
+ /* Silence the bogus uninitialized warning. */
+ tree collection_expression = NULL;
+ location_t loc = c_parser_peek_token (parser)->location;
+ location_t for_loc = c_parser_peek_token (parser)->location;
+ bool is_foreach_statement = false;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_FOR));
- loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
- block = c_begin_compound_stmt (flag_isoc99);
+ /* Open a compound statement in Objective-C as well, just in case this is
+ as foreach expression. */
+ block = c_begin_compound_stmt (flag_isoc99 || c_dialect_objc ());
+ cond = error_mark_node;
+ incr = error_mark_node;
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
/* Parse the initialization declaration or expression. */
+ object_expression = error_mark_node;
+ parser->objc_could_be_foreach_context = c_dialect_objc ();
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
+ parser->objc_could_be_foreach_context = false;
c_parser_consume_token (parser);
- c_finish_expr_stmt (NULL_TREE);
+ c_finish_expr_stmt (loc, NULL_TREE);
}
- else if (c_parser_next_token_starts_declspecs (parser))
+ else if (c_parser_next_tokens_start_declaration (parser))
{
- c_parser_declaration_or_fndef (parser, true, true, true, true);
- check_for_loop_decls ();
+ c_parser_declaration_or_fndef (parser, true, true, true, true, true,
+ &object_expression);
+ parser->objc_could_be_foreach_context = false;
+
+ if (c_parser_next_token_is_keyword (parser, RID_IN))
+ {
+ c_parser_consume_token (parser);
+ is_foreach_statement = true;
+ if (check_for_loop_decls (for_loc, true) == NULL_TREE)
+ c_parser_error (parser, "multiple iterating variables in fast enumeration");
+ }
+ else
+ check_for_loop_decls (for_loc, flag_isoc99);
}
else if (c_parser_next_token_is_keyword (parser, RID_EXTENSION))
{
&& (c_parser_peek_2nd_token (parser)->keyword
== RID_EXTENSION))
c_parser_consume_token (parser);
- if (c_token_starts_declspecs (c_parser_peek_2nd_token (parser)))
+ if (c_token_starts_declaration (c_parser_peek_2nd_token (parser)))
{
int ext;
ext = disable_extension_diagnostics ();
c_parser_consume_token (parser);
- c_parser_declaration_or_fndef (parser, true, true, true, true);
+ c_parser_declaration_or_fndef (parser, true, true, true, true,
+ true, &object_expression);
+ parser->objc_could_be_foreach_context = false;
+
restore_extension_diagnostics (ext);
- check_for_loop_decls ();
+ if (c_parser_next_token_is_keyword (parser, RID_IN))
+ {
+ c_parser_consume_token (parser);
+ is_foreach_statement = true;
+ if (check_for_loop_decls (for_loc, true) == NULL_TREE)
+ c_parser_error (parser, "multiple iterating variables in fast enumeration");
+ }
+ else
+ check_for_loop_decls (for_loc, flag_isoc99);
}
else
goto init_expr;
else
{
init_expr:
- c_finish_expr_stmt (c_parser_expression (parser).value);
- c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ {
+ tree init_expression;
+ init_expression = c_parser_expression (parser).value;
+ parser->objc_could_be_foreach_context = false;
+ if (c_parser_next_token_is_keyword (parser, RID_IN))
+ {
+ c_parser_consume_token (parser);
+ is_foreach_statement = true;
+ if (! lvalue_p (init_expression))
+ c_parser_error (parser, "invalid iterating variable in fast enumeration");
+ object_expression = c_fully_fold (init_expression, false, NULL);
+ }
+ else
+ {
+ c_finish_expr_stmt (loc, init_expression);
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ }
+ }
}
- /* Parse the loop condition. */
- loc = c_parser_peek_token (parser)->location;
- if (c_parser_next_token_is (parser, CPP_SEMICOLON))
+ /* Parse the loop condition. In the case of a foreach
+ statement, there is no loop condition. */
+ gcc_assert (!parser->objc_could_be_foreach_context);
+ if (!is_foreach_statement)
{
- c_parser_consume_token (parser);
- cond = NULL_TREE;
+ if (c_parser_next_token_is (parser, CPP_SEMICOLON))
+ {
+ c_parser_consume_token (parser);
+ cond = NULL_TREE;
+ }
+ else
+ {
+ cond = c_parser_condition (parser);
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ }
}
- else
+ /* Parse the increment expression (the third expression in a
+ for-statement). In the case of a foreach-statement, this is
+ the expression that follows the 'in'. */
+ if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
{
- tree ocond = c_parser_expression_conv (parser).value;
- cond = c_objc_common_truthvalue_conversion (ocond);
- if (CAN_HAVE_LOCATION_P (cond))
- SET_EXPR_LOCATION (cond, loc);
- c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ if (is_foreach_statement)
+ {
+ c_parser_error (parser, "missing collection in fast enumeration");
+ collection_expression = error_mark_node;
+ }
+ else
+ incr = c_process_expr_stmt (loc, NULL_TREE);
}
- /* Parse the increment expression. */
- if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- incr = c_process_expr_stmt (NULL_TREE);
else
- incr = c_process_expr_stmt (c_parser_expression (parser).value);
+ {
+ if (is_foreach_statement)
+ collection_expression = c_fully_fold (c_parser_expression (parser).value,
+ false, NULL);
+ else
+ incr = c_process_expr_stmt (loc, c_parser_expression (parser).value);
+ }
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
}
- else
- {
- cond = error_mark_node;
- incr = error_mark_node;
- }
save_break = c_break_label;
c_break_label = NULL_TREE;
save_cont = c_cont_label;
c_cont_label = NULL_TREE;
body = c_parser_c99_block_statement (parser);
- c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true);
- add_stmt (c_end_compound_stmt (block, flag_isoc99));
+ if (is_foreach_statement)
+ objc_finish_foreach_loop (loc, object_expression, collection_expression, body, c_break_label, c_cont_label);
+ else
+ c_finish_loop (loc, cond, incr, body, c_break_label, c_cont_label, true);
+ add_stmt (c_end_compound_stmt (loc, block, flag_isoc99 || c_dialect_objc ()));
c_break_label = save_break;
c_cont_label = save_cont;
}
asm-statement:
asm type-qualifier[opt] ( asm-argument ) ;
+ asm type-qualifier[opt] goto ( asm-goto-argument ) ;
asm-argument:
asm-string-literal
asm-string-literal : asm-operands[opt]
asm-string-literal : asm-operands[opt] : asm-operands[opt]
- asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers
+ asm-string-literal : asm-operands[opt] : asm-operands[opt] : asm-clobbers[opt]
+
+ asm-goto-argument:
+ asm-string-literal : : asm-operands[opt] : asm-clobbers[opt] \
+ : asm-goto-operands
Qualifiers other than volatile are accepted in the syntax but
warned for. */
static tree
c_parser_asm_statement (c_parser *parser)
{
- tree quals, str, outputs, inputs, clobbers, ret;
- bool simple;
+ tree quals, str, outputs, inputs, clobbers, labels, ret;
+ bool simple, is_goto;
+ location_t asm_loc = c_parser_peek_token (parser)->location;
+ int section, nsections;
+
gcc_assert (c_parser_next_token_is_keyword (parser, RID_ASM));
c_parser_consume_token (parser);
if (c_parser_next_token_is_keyword (parser, RID_VOLATILE))
else if (c_parser_next_token_is_keyword (parser, RID_CONST)
|| c_parser_next_token_is_keyword (parser, RID_RESTRICT))
{
- warning (0, "%H%E qualifier ignored on asm",
- &c_parser_peek_token (parser)->location,
- c_parser_peek_token (parser)->value);
+ warning_at (c_parser_peek_token (parser)->location,
+ 0,
+ "%E qualifier ignored on asm",
+ c_parser_peek_token (parser)->value);
quals = NULL_TREE;
c_parser_consume_token (parser);
}
else
quals = NULL_TREE;
+
+ is_goto = false;
+ if (c_parser_next_token_is_keyword (parser, RID_GOTO))
+ {
+ c_parser_consume_token (parser);
+ is_goto = true;
+ }
+
/* ??? Follow the C++ parser rather than using the
lex_untranslated_string kludge. */
parser->lex_untranslated_string = true;
+ ret = NULL;
+
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
- {
- parser->lex_untranslated_string = false;
- return NULL_TREE;
- }
+ goto error;
+
str = c_parser_asm_string_literal (parser);
- if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- {
- simple = true;
- outputs = NULL_TREE;
- inputs = NULL_TREE;
- clobbers = NULL_TREE;
- goto done_asm;
- }
- if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
- {
- parser->lex_untranslated_string = false;
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- return NULL_TREE;
- }
- simple = false;
- /* Parse outputs. */
- if (c_parser_next_token_is (parser, CPP_COLON)
- || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- outputs = NULL_TREE;
- else
- outputs = c_parser_asm_operands (parser, false);
- if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- {
- inputs = NULL_TREE;
- clobbers = NULL_TREE;
- goto done_asm;
- }
- if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
- {
- parser->lex_untranslated_string = false;
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- return NULL_TREE;
- }
- /* Parse inputs. */
- if (c_parser_next_token_is (parser, CPP_COLON)
- || c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- inputs = NULL_TREE;
- else
- inputs = c_parser_asm_operands (parser, true);
- if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- {
- clobbers = NULL_TREE;
- goto done_asm;
- }
- if (!c_parser_require (parser, CPP_COLON, "expected %<:%> or %<)%>"))
- {
- parser->lex_untranslated_string = false;
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- return NULL_TREE;
+ if (str == NULL_TREE)
+ goto error_close_paren;
+
+ simple = true;
+ outputs = NULL_TREE;
+ inputs = NULL_TREE;
+ clobbers = NULL_TREE;
+ labels = NULL_TREE;
+
+ if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto)
+ goto done_asm;
+
+ /* Parse each colon-delimited section of operands. */
+ nsections = 3 + is_goto;
+ for (section = 0; section < nsections; ++section)
+ {
+ if (!c_parser_require (parser, CPP_COLON,
+ is_goto
+ ? "expected %<:%>"
+ : "expected %<:%> or %<)%>"))
+ goto error_close_paren;
+
+ /* Once past any colon, we're no longer a simple asm. */
+ simple = false;
+
+ if ((!c_parser_next_token_is (parser, CPP_COLON)
+ && !c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
+ || section == 3)
+ switch (section)
+ {
+ case 0:
+ /* For asm goto, we don't allow output operands, but reserve
+ the slot for a future extension that does allow them. */
+ if (!is_goto)
+ outputs = c_parser_asm_operands (parser, false);
+ break;
+ case 1:
+ inputs = c_parser_asm_operands (parser, true);
+ break;
+ case 2:
+ clobbers = c_parser_asm_clobbers (parser);
+ break;
+ case 3:
+ labels = c_parser_asm_goto_operands (parser);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+
+ if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN) && !is_goto)
+ goto done_asm;
}
- /* Parse clobbers. */
- clobbers = c_parser_asm_clobbers (parser);
+
done_asm:
- parser->lex_untranslated_string = false;
if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- return NULL_TREE;
+ goto error;
}
+
if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
c_parser_skip_to_end_of_block_or_statement (parser);
- ret = build_asm_stmt (quals, build_asm_expr (str, outputs, inputs,
- clobbers, simple));
+
+ ret = build_asm_stmt (quals, build_asm_expr (asm_loc, str, outputs, inputs,
+ clobbers, labels, simple));
+
+ error:
+ parser->lex_untranslated_string = false;
return ret;
+
+ error_close_paren:
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
+ goto error;
}
/* Parse asm operands, a GNU extension. If CONVERT_P (for inputs but
c_parser_asm_operands (c_parser *parser, bool convert_p)
{
tree list = NULL_TREE;
+ location_t loc;
while (true)
{
tree name, str;
parser->lex_untranslated_string = true;
return NULL_TREE;
}
+ loc = c_parser_peek_token (parser)->location;
expr = c_parser_expression (parser);
+ mark_exp_read (expr.value);
if (convert_p)
- expr = default_function_array_conversion (expr);
+ expr = default_function_array_conversion (loc, expr);
+ expr.value = c_fully_fold (expr.value, false, NULL);
parser->lex_untranslated_string = true;
if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
{
return list;
}
+/* Parse asm goto labels, a GNU extension.
+
+ asm-goto-operands:
+ identifier
+ asm-goto-operands , identifier
+*/
+
+static tree
+c_parser_asm_goto_operands (c_parser *parser)
+{
+ tree list = NULL_TREE;
+ while (true)
+ {
+ tree name, label;
+
+ if (c_parser_next_token_is (parser, CPP_NAME))
+ {
+ c_token *tok = c_parser_peek_token (parser);
+ name = tok->value;
+ label = lookup_label_for_goto (tok->location, name);
+ c_parser_consume_token (parser);
+ TREE_USED (label) = 1;
+ }
+ else
+ {
+ c_parser_error (parser, "expected identifier");
+ return NULL_TREE;
+ }
+
+ name = build_string (IDENTIFIER_LENGTH (name),
+ IDENTIFIER_POINTER (name));
+ list = tree_cons (name, label, list);
+ if (c_parser_next_token_is (parser, CPP_COMMA))
+ c_parser_consume_token (parser);
+ else
+ return nreverse (list);
+ }
+}
+
/* Parse an expression other than a compound expression; that is, an
assignment expression (C90 6.3.16, C99 6.5.16). If AFTER is not
NULL then it is an Objective-C message expression which is the
{
struct c_expr lhs, rhs, ret;
enum tree_code code;
+ location_t op_location, exp_location;
gcc_assert (!after || c_dialect_objc ());
lhs = c_parser_conditional_expression (parser, after);
+ op_location = c_parser_peek_token (parser)->location;
switch (c_parser_peek_token (parser)->type)
{
case CPP_EQ:
return lhs;
}
c_parser_consume_token (parser);
+ exp_location = c_parser_peek_token (parser)->location;
rhs = c_parser_expr_no_commas (parser, NULL);
- rhs = default_function_array_conversion (rhs);
- ret.value = build_modify_expr (lhs.value, code, rhs.value);
+ rhs = default_function_array_read_conversion (exp_location, rhs);
+ ret.value = build_modify_expr (op_location, lhs.value, lhs.original_type,
+ code, exp_location, rhs.value,
+ rhs.original_type);
if (code == NOP_EXPR)
ret.original_code = MODIFY_EXPR;
else
TREE_NO_WARNING (ret.value) = 1;
ret.original_code = ERROR_MARK;
}
+ ret.original_type = NULL;
return ret;
}
c_parser_conditional_expression (c_parser *parser, struct c_expr *after)
{
struct c_expr cond, exp1, exp2, ret;
+ location_t cond_loc, colon_loc, middle_loc;
+
gcc_assert (!after || c_dialect_objc ());
- cond = c_parser_binary_expression (parser, after);
+
+ cond = c_parser_binary_expression (parser, after, PREC_NONE);
+
if (c_parser_next_token_is_not (parser, CPP_QUERY))
return cond;
- cond = default_function_array_conversion (cond);
+ cond_loc = c_parser_peek_token (parser)->location;
+ cond = default_function_array_read_conversion (cond_loc, cond);
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COLON))
{
- if (pedantic)
- pedwarn ("%HISO C forbids omitting the middle term of a ?: expression",
- &c_parser_peek_token (parser)->location);
+ tree eptype = NULL_TREE;
+
+ middle_loc = c_parser_peek_token (parser)->location;
+ pedwarn (middle_loc, OPT_pedantic,
+ "ISO C forbids omitting the middle term of a ?: expression");
+ warn_for_omitted_condop (middle_loc, cond.value);
+ if (TREE_CODE (cond.value) == EXCESS_PRECISION_EXPR)
+ {
+ eptype = TREE_TYPE (cond.value);
+ cond.value = TREE_OPERAND (cond.value, 0);
+ }
/* Make sure first operand is calculated only once. */
- exp1.value = save_expr (default_conversion (cond.value));
- cond.value = c_objc_common_truthvalue_conversion (exp1.value);
- skip_evaluation += cond.value == truthvalue_true_node;
+ exp1.value = c_save_expr (default_conversion (cond.value));
+ if (eptype)
+ exp1.value = build1 (EXCESS_PRECISION_EXPR, eptype, exp1.value);
+ exp1.original_type = NULL;
+ cond.value = c_objc_common_truthvalue_conversion (cond_loc, exp1.value);
+ c_inhibit_evaluation_warnings += cond.value == truthvalue_true_node;
}
else
{
cond.value
= c_objc_common_truthvalue_conversion
- (default_conversion (cond.value));
- skip_evaluation += cond.value == truthvalue_false_node;
+ (cond_loc, default_conversion (cond.value));
+ c_inhibit_evaluation_warnings += cond.value == truthvalue_false_node;
exp1 = c_parser_expression_conv (parser);
- skip_evaluation += ((cond.value == truthvalue_true_node)
- - (cond.value == truthvalue_false_node));
+ mark_exp_read (exp1.value);
+ c_inhibit_evaluation_warnings +=
+ ((cond.value == truthvalue_true_node)
+ - (cond.value == truthvalue_false_node));
}
+
+ colon_loc = c_parser_peek_token (parser)->location;
if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
{
- skip_evaluation -= cond.value == truthvalue_true_node;
+ c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node;
ret.value = error_mark_node;
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
- exp2 = c_parser_conditional_expression (parser, NULL);
- exp2 = default_function_array_conversion (exp2);
- skip_evaluation -= cond.value == truthvalue_true_node;
- ret.value = build_conditional_expr (cond.value, exp1.value, exp2.value);
+ {
+ location_t exp2_loc = c_parser_peek_token (parser)->location;
+ exp2 = c_parser_conditional_expression (parser, NULL);
+ exp2 = default_function_array_read_conversion (exp2_loc, exp2);
+ }
+ c_inhibit_evaluation_warnings -= cond.value == truthvalue_true_node;
+ ret.value = build_conditional_expr (colon_loc, cond.value,
+ cond.original_code == C_MAYBE_CONST_EXPR,
+ exp1.value, exp1.original_type,
+ exp2.value, exp2.original_type);
ret.original_code = ERROR_MARK;
+ if (exp1.value == error_mark_node || exp2.value == error_mark_node)
+ ret.original_type = NULL;
+ else
+ {
+ tree t1, t2;
+
+ /* If both sides are enum type, the default conversion will have
+ made the type of the result be an integer type. We want to
+ remember the enum types we started with. */
+ t1 = exp1.original_type ? exp1.original_type : TREE_TYPE (exp1.value);
+ t2 = exp2.original_type ? exp2.original_type : TREE_TYPE (exp2.value);
+ ret.original_type = ((t1 != error_mark_node
+ && t2 != error_mark_node
+ && (TYPE_MAIN_VARIANT (t1)
+ == TYPE_MAIN_VARIANT (t2)))
+ ? t1
+ : NULL);
+ }
return ret;
}
/* Parse a binary expression; that is, a logical-OR-expression (C90
6.3.5-6.3.14, C99 6.5.5-6.5.14). If AFTER is not NULL then it is
an Objective-C message expression which is the primary-expression
- starting the expression as an initializer.
+ starting the expression as an initializer. PREC is the starting
+ precedence, usually PREC_NONE.
multiplicative-expression:
cast-expression
*/
static struct c_expr
-c_parser_binary_expression (c_parser *parser, struct c_expr *after)
+c_parser_binary_expression (c_parser *parser, struct c_expr *after,
+ enum c_parser_prec prec)
{
/* A binary expression is parsed using operator-precedence parsing,
with the operands being cast expressions. All the binary
the stack has lower precedence than the new operator or there is
only one element on the stack; then the top expression is the LHS
of the new operator. In the case of logical AND and OR
- expressions, we also need to adjust skip_evaluation as
- appropriate when the operators are pushed and popped. */
-
- /* The precedence levels, where 0 is a dummy lowest level used for
- the bottom of the stack. */
- enum prec {
- PREC_NONE,
- PREC_LOGOR,
- PREC_LOGAND,
- PREC_BITOR,
- PREC_BITXOR,
- PREC_BITAND,
- PREC_EQ,
- PREC_REL,
- PREC_SHIFT,
- PREC_ADD,
- PREC_MULT,
- NUM_PRECS
- };
+ expressions, we also need to adjust c_inhibit_evaluation_warnings
+ as appropriate when the operators are pushed and popped. */
+
struct {
/* The expression at this stack level. */
struct c_expr expr;
/* The precedence of the operator on its left, PREC_NONE at the
bottom of the stack. */
- enum prec prec;
+ enum c_parser_prec prec;
/* The operation on its left. */
enum tree_code op;
+ /* The source location of this operation. */
+ location_t loc;
} stack[NUM_PRECS];
int sp;
+ /* Location of the binary operator. */
+ location_t binary_loc = UNKNOWN_LOCATION; /* Quiet warning. */
#define POP \
do { \
switch (stack[sp].op) \
{ \
case TRUTH_ANDIF_EXPR: \
- skip_evaluation -= stack[sp - 1].expr.value == truthvalue_false_node; \
+ c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \
+ == truthvalue_false_node); \
break; \
case TRUTH_ORIF_EXPR: \
- skip_evaluation -= stack[sp - 1].expr.value == truthvalue_true_node; \
+ c_inhibit_evaluation_warnings -= (stack[sp - 1].expr.value \
+ == truthvalue_true_node); \
break; \
default: \
break; \
} \
stack[sp - 1].expr \
- = default_function_array_conversion (stack[sp - 1].expr); \
+ = default_function_array_read_conversion (stack[sp - 1].loc, \
+ stack[sp - 1].expr); \
stack[sp].expr \
- = default_function_array_conversion (stack[sp].expr); \
- stack[sp - 1].expr = parser_build_binary_op (stack[sp].op, \
+ = default_function_array_read_conversion (stack[sp].loc, \
+ stack[sp].expr); \
+ stack[sp - 1].expr = parser_build_binary_op (stack[sp].loc, \
+ stack[sp].op, \
stack[sp - 1].expr, \
stack[sp].expr); \
sp--; \
} while (0)
gcc_assert (!after || c_dialect_objc ());
+ stack[0].loc = c_parser_peek_token (parser)->location;
stack[0].expr = c_parser_cast_expression (parser, after);
- stack[0].prec = PREC_NONE;
+ stack[0].prec = prec;
sp = 0;
while (true)
{
- enum prec oprec;
+ enum c_parser_prec oprec;
enum tree_code ocode;
if (parser->error)
goto out;
expression. */
goto out;
}
- c_parser_consume_token (parser);
+ binary_loc = c_parser_peek_token (parser)->location;
while (oprec <= stack[sp].prec)
- POP;
+ {
+ if (sp == 0)
+ goto out;
+ POP;
+ }
+ c_parser_consume_token (parser);
switch (ocode)
{
case TRUTH_ANDIF_EXPR:
stack[sp].expr
- = default_function_array_conversion (stack[sp].expr);
+ = default_function_array_read_conversion (stack[sp].loc,
+ stack[sp].expr);
stack[sp].expr.value = c_objc_common_truthvalue_conversion
- (default_conversion (stack[sp].expr.value));
- skip_evaluation += stack[sp].expr.value == truthvalue_false_node;
+ (stack[sp].loc, default_conversion (stack[sp].expr.value));
+ c_inhibit_evaluation_warnings += (stack[sp].expr.value
+ == truthvalue_false_node);
break;
case TRUTH_ORIF_EXPR:
stack[sp].expr
- = default_function_array_conversion (stack[sp].expr);
+ = default_function_array_read_conversion (stack[sp].loc,
+ stack[sp].expr);
stack[sp].expr.value = c_objc_common_truthvalue_conversion
- (default_conversion (stack[sp].expr.value));
- skip_evaluation += stack[sp].expr.value == truthvalue_true_node;
+ (stack[sp].loc, default_conversion (stack[sp].expr.value));
+ c_inhibit_evaluation_warnings += (stack[sp].expr.value
+ == truthvalue_true_node);
break;
default:
break;
}
sp++;
+ stack[sp].loc = binary_loc;
stack[sp].expr = c_parser_cast_expression (parser, NULL);
stack[sp].prec = oprec;
stack[sp].op = ocode;
+ stack[sp].loc = binary_loc;
}
out:
while (sp > 0)
static struct c_expr
c_parser_cast_expression (c_parser *parser, struct c_expr *after)
{
+ location_t cast_loc = c_parser_peek_token (parser)->location;
gcc_assert (!after || c_dialect_objc ());
if (after)
- return c_parser_postfix_expression_after_primary (parser, *after);
+ return c_parser_postfix_expression_after_primary (parser,
+ cast_loc, *after);
/* If the expression begins with a parenthesized type name, it may
be either a cast or a compound literal; we need to see whether
the next character is '{' to tell the difference. If not, it is
- an unary expression. */
+ an unary expression. Full detection of unknown typenames here
+ would require a 3-token lookahead. */
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
&& c_token_starts_typename (c_parser_peek_2nd_token (parser)))
{
{
ret.value = error_mark_node;
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
used_types_insert (type_name->specs->type);
if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
- return c_parser_postfix_expression_after_paren_type (parser,
- type_name);
- expr = c_parser_cast_expression (parser, NULL);
- expr = default_function_array_conversion (expr);
- ret.value = c_cast_expr (type_name, expr.value);
+ return c_parser_postfix_expression_after_paren_type (parser, type_name,
+ cast_loc);
+ {
+ location_t expr_loc = c_parser_peek_token (parser)->location;
+ expr = c_parser_cast_expression (parser, NULL);
+ expr = default_function_array_read_conversion (expr_loc, expr);
+ }
+ ret.value = c_cast_expr (cast_loc, type_name, expr.value);
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
else
__alignof__ ( type-name )
&& identifier
+ (C11 permits _Alignof with type names only.)
+
unary-operator: one of
__extension__ __real__ __imag__
+ Transactional Memory:
+
+ unary-expression:
+ transaction-expression
+
In addition, the GNU syntax treats ++ and -- as unary operators, so
they may be applied to cast expressions with errors for non-lvalues
given later. */
{
int ext;
struct c_expr ret, op;
+ location_t op_loc = c_parser_peek_token (parser)->location;
+ location_t exp_loc;
+ ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
switch (c_parser_peek_token (parser)->type)
{
case CPP_PLUS_PLUS:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (PREINCREMENT_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, PREINCREMENT_EXPR, op);
case CPP_MINUS_MINUS:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (PREDECREMENT_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, PREDECREMENT_EXPR, op);
case CPP_AND:
c_parser_consume_token (parser);
- return parser_build_unary_op (ADDR_EXPR,
- c_parser_cast_expression (parser, NULL));
+ op = c_parser_cast_expression (parser, NULL);
+ mark_exp_read (op.value);
+ return parser_build_unary_op (op_loc, ADDR_EXPR, op);
case CPP_MULT:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- ret.value = build_indirect_ref (op.value, "unary *");
- ret.original_code = ERROR_MARK;
+ op = default_function_array_read_conversion (exp_loc, op);
+ ret.value = build_indirect_ref (op_loc, op.value, RO_UNARY_STAR);
return ret;
case CPP_PLUS:
if (!c_dialect_objc () && !in_system_header)
- warning (OPT_Wtraditional,
- "%Htraditional C rejects the unary plus operator",
- &c_parser_peek_token (parser)->location);
+ warning_at (op_loc,
+ OPT_Wtraditional,
+ "traditional C rejects the unary plus operator");
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (CONVERT_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, CONVERT_EXPR, op);
case CPP_MINUS:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (NEGATE_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, NEGATE_EXPR, op);
case CPP_COMPL:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (BIT_NOT_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, BIT_NOT_EXPR, op);
case CPP_NOT:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (TRUTH_NOT_EXPR, op);
+ op = default_function_array_read_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, TRUTH_NOT_EXPR, op);
case CPP_AND_AND:
/* Refer to the address of a label as a pointer. */
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_NAME))
{
ret.value = finish_label_address_expr
- (c_parser_peek_token (parser)->value);
+ (c_parser_peek_token (parser)->value, op_loc);
c_parser_consume_token (parser);
}
else
c_parser_error (parser, "expected identifier");
ret.value = error_mark_node;
}
- ret.original_code = ERROR_MARK;
return ret;
case CPP_KEYWORD:
switch (c_parser_peek_token (parser)->keyword)
return ret;
case RID_REALPART:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (REALPART_EXPR, op);
+ op = default_function_array_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, REALPART_EXPR, op);
case RID_IMAGPART:
c_parser_consume_token (parser);
+ exp_loc = c_parser_peek_token (parser)->location;
op = c_parser_cast_expression (parser, NULL);
- op = default_function_array_conversion (op);
- return parser_build_unary_op (IMAGPART_EXPR, op);
+ op = default_function_array_conversion (exp_loc, op);
+ return parser_build_unary_op (op_loc, IMAGPART_EXPR, op);
+ case RID_TRANSACTION_ATOMIC:
+ case RID_TRANSACTION_RELAXED:
+ return c_parser_transaction_expression (parser,
+ c_parser_peek_token (parser)->keyword);
default:
return c_parser_postfix_expression (parser);
}
location_t expr_loc;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_SIZEOF));
c_parser_consume_token (parser);
- skip_evaluation++;
+ c_inhibit_evaluation_warnings++;
in_sizeof++;
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
&& c_token_starts_typename (c_parser_peek_2nd_token (parser)))
if (type_name == NULL)
{
struct c_expr ret;
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_sizeof--;
ret.value = error_mark_node;
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
{
expr = c_parser_postfix_expression_after_paren_type (parser,
- type_name);
+ type_name,
+ expr_loc);
goto sizeof_expr;
}
/* sizeof ( type-name ). */
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_sizeof--;
- if (type_name->declarator->kind == cdk_array
- && type_name->declarator->u.array.vla_unspec_p)
- {
- /* C99 6.7.5.2p4 */
- error ("%H%<[*]%> not allowed in other than a declaration",
- &expr_loc);
- }
- return c_expr_sizeof_type (type_name);
+ return c_expr_sizeof_type (expr_loc, type_name);
}
else
{
expr_loc = c_parser_peek_token (parser)->location;
expr = c_parser_unary_expression (parser);
sizeof_expr:
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_sizeof--;
+ mark_exp_read (expr.value);
if (TREE_CODE (expr.value) == COMPONENT_REF
&& DECL_C_BIT_FIELD (TREE_OPERAND (expr.value, 1)))
- error ("%H%<sizeof%> applied to a bit-field", &expr_loc);
- return c_expr_sizeof_expr (expr);
+ error_at (expr_loc, "%<sizeof%> applied to a bit-field");
+ return c_expr_sizeof_expr (expr_loc, expr);
}
}
c_parser_alignof_expression (c_parser *parser)
{
struct c_expr expr;
+ location_t loc = c_parser_peek_token (parser)->location;
+ tree alignof_spelling = c_parser_peek_token (parser)->value;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_ALIGNOF));
+ /* A diagnostic is not required for the use of this identifier in
+ the implementation namespace; only diagnose it for the C11
+ spelling because of existing code using the other spellings. */
+ if (!flag_isoc11
+ && strcmp (IDENTIFIER_POINTER (alignof_spelling), "_Alignof") == 0)
+ {
+ if (flag_isoc99)
+ pedwarn (loc, OPT_pedantic, "ISO C99 does not support %qE",
+ alignof_spelling);
+ else
+ pedwarn (loc, OPT_pedantic, "ISO C90 does not support %qE",
+ alignof_spelling);
+ }
c_parser_consume_token (parser);
- skip_evaluation++;
+ c_inhibit_evaluation_warnings++;
in_alignof++;
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN)
&& c_token_starts_typename (c_parser_peek_2nd_token (parser)))
{
/* Either __alignof__ ( type-name ) or __alignof__
unary-expression starting with a compound literal. */
+ location_t loc;
struct c_type_name *type_name;
struct c_expr ret;
c_parser_consume_token (parser);
+ loc = c_parser_peek_token (parser)->location;
type_name = c_parser_type_name (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
if (type_name == NULL)
{
struct c_expr ret;
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_alignof--;
ret.value = error_mark_node;
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
{
expr = c_parser_postfix_expression_after_paren_type (parser,
- type_name);
+ type_name,
+ loc);
goto alignof_expr;
}
/* alignof ( type-name ). */
- skip_evaluation--;
+ c_inhibit_evaluation_warnings--;
in_alignof--;
- ret.value = c_alignof (groktypename (type_name));
+ ret.value = c_alignof (loc, groktypename (type_name, NULL, NULL));
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
else
struct c_expr ret;
expr = c_parser_unary_expression (parser);
alignof_expr:
- skip_evaluation--;
+ mark_exp_read (expr.value);
+ c_inhibit_evaluation_warnings--;
in_alignof--;
- ret.value = c_alignof_expr (expr.value);
+ pedwarn (loc, OPT_pedantic, "ISO C does not allow %<%E (expression)%>",
+ alignof_spelling);
+ ret.value = c_alignof_expr (loc, expr.value);
ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
return ret;
}
}
+/* Helper function to read arguments of builtins which are interfaces
+ for the middle-end nodes like COMPLEX_EXPR, VEC_PERM_EXPR and
+ others. The name of the builtin is passed using BNAME parameter.
+ Function returns true if there were no errors while parsing and
+ stores the arguments in CEXPR_LIST. */
+static bool
+c_parser_get_builtin_args (c_parser *parser, const char *bname,
+ VEC(c_expr_t,gc) **ret_cexpr_list)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ VEC (c_expr_t,gc) *cexpr_list;
+ c_expr_t expr;
+
+ *ret_cexpr_list = NULL;
+ if (c_parser_next_token_is_not (parser, CPP_OPEN_PAREN))
+ {
+ error_at (loc, "cannot take address of %qs", bname);
+ return false;
+ }
+
+ c_parser_consume_token (parser);
+
+ if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
+ {
+ c_parser_consume_token (parser);
+ return true;
+ }
+
+ expr = c_parser_expr_no_commas (parser, NULL);
+ cexpr_list = VEC_alloc (c_expr_t, gc, 1);
+ C_EXPR_APPEND (cexpr_list, expr);
+ while (c_parser_next_token_is (parser, CPP_COMMA))
+ {
+ c_parser_consume_token (parser);
+ expr = c_parser_expr_no_commas (parser, NULL);
+ C_EXPR_APPEND (cexpr_list, expr);
+ }
+
+ if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
+ return false;
+
+ *ret_cexpr_list = cexpr_list;
+ return true;
+}
+
+
/* Parse a postfix expression (C90 6.3.1-6.3.2, C99 6.5.1-6.5.2).
postfix-expression:
assignment-expression ,
assignment-expression )
__builtin_types_compatible_p ( type-name , type-name )
+ __builtin_complex ( assignment-expression , assignment-expression )
+ __builtin_shuffle ( assignment-expression , assignment-expression )
+ __builtin_shuffle ( assignment-expression ,
+ assignment-expression ,
+ assignment-expression, )
offsetof-member-designator:
identifier
@protocol ( identifier )
@encode ( type-name )
objc-string-literal
+ Classname . identifier
*/
static struct c_expr
c_parser_postfix_expression (c_parser *parser)
{
- struct c_expr expr, e1, e2, e3;
+ struct c_expr expr, e1;
struct c_type_name *t1, *t2;
- location_t loc;
+ location_t loc = c_parser_peek_token (parser)->location;;
+ expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
switch (c_parser_peek_token (parser)->type)
{
case CPP_NUMBER:
+ expr.value = c_parser_peek_token (parser)->value;
+ loc = c_parser_peek_token (parser)->location;
+ c_parser_consume_token (parser);
+ if (TREE_CODE (expr.value) == FIXED_CST
+ && !targetm.fixed_point_supported_p ())
+ {
+ error_at (loc, "fixed-point types not supported for this target");
+ expr.value = error_mark_node;
+ }
+ break;
case CPP_CHAR:
+ case CPP_CHAR16:
+ case CPP_CHAR32:
case CPP_WCHAR:
expr.value = c_parser_peek_token (parser)->value;
- expr.original_code = ERROR_MARK;
c_parser_consume_token (parser);
break;
case CPP_STRING:
+ case CPP_STRING16:
+ case CPP_STRING32:
case CPP_WSTRING:
+ case CPP_UTF8STRING:
expr.value = c_parser_peek_token (parser)->value;
expr.original_code = STRING_CST;
c_parser_consume_token (parser);
gcc_assert (c_dialect_objc ());
expr.value
= objc_build_string_object (c_parser_peek_token (parser)->value);
- expr.original_code = ERROR_MARK;
c_parser_consume_token (parser);
break;
case CPP_NAME:
- if (c_parser_peek_token (parser)->id_kind != C_ID_ID)
+ switch (c_parser_peek_token (parser)->id_kind)
{
+ case C_ID_ID:
+ {
+ tree id = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ expr.value = build_external_ref (loc, id,
+ (c_parser_peek_token (parser)->type
+ == CPP_OPEN_PAREN),
+ &expr.original_type);
+ break;
+ }
+ case C_ID_CLASSNAME:
+ {
+ /* Here we parse the Objective-C 2.0 Class.name dot
+ syntax. */
+ tree class_name = c_parser_peek_token (parser)->value;
+ tree component;
+ c_parser_consume_token (parser);
+ gcc_assert (c_dialect_objc ());
+ if (!c_parser_require (parser, CPP_DOT, "expected %<.%>"))
+ {
+ expr.value = error_mark_node;
+ break;
+ }
+ if (c_parser_next_token_is_not (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected identifier");
+ expr.value = error_mark_node;
+ break;
+ }
+ component = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ expr.value = objc_build_class_component_ref (class_name,
+ component);
+ break;
+ }
+ default:
c_parser_error (parser, "expected expression");
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
- {
- tree id = c_parser_peek_token (parser)->value;
- location_t loc = c_parser_peek_token (parser)->location;
- c_parser_consume_token (parser);
- expr.value = build_external_ref (id,
- (c_parser_peek_token (parser)->type
- == CPP_OPEN_PAREN), loc);
- expr.original_code = ERROR_MARK;
- }
break;
case CPP_OPEN_PAREN:
/* A parenthesized expression, statement expression or compound
{
/* A statement expression. */
tree stmt;
- location_t here = c_parser_peek_token (parser)->location;
+ location_t brace_loc;
c_parser_consume_token (parser);
+ brace_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
- if (cur_stmt_list == NULL)
+ if (!building_stmt_list_p ())
{
- error ("%Hbraced-group within expression allowed "
- "only inside a function", &here);
+ error_at (loc, "braced-group within expression allowed "
+ "only inside a function");
parser->error = true;
c_parser_skip_until_found (parser, CPP_CLOSE_BRACE, NULL);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
stmt = c_begin_stmt_expr ();
c_parser_compound_statement_nostart (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
- if (pedantic)
- pedwarn ("%HISO C forbids braced-groups within expressions",
- &here);
- expr.value = c_finish_stmt_expr (stmt);
- expr.original_code = ERROR_MARK;
+ pedwarn (loc, OPT_pedantic,
+ "ISO C forbids braced-groups within expressions");
+ expr.value = c_finish_stmt_expr (brace_loc, stmt);
+ mark_exp_read (expr.value);
}
else if (c_token_starts_typename (c_parser_peek_2nd_token (parser)))
{
than going directly to
c_parser_postfix_expression_after_paren_type from
elsewhere? */
+ location_t loc;
struct c_type_name *type_name;
c_parser_consume_token (parser);
+ loc = c_parser_peek_token (parser)->location;
type_name = c_parser_type_name (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
if (type_name == NULL)
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
}
else
expr = c_parser_postfix_expression_after_paren_type (parser,
- type_name);
+ type_name,
+ loc);
}
else
{
expr = c_parser_expression (parser);
if (TREE_CODE (expr.value) == MODIFY_EXPR)
TREE_NO_WARNING (expr.value) = 1;
- expr.original_code = ERROR_MARK;
+ if (expr.original_code != C_MAYBE_CONST_EXPR)
+ expr.original_code = ERROR_MARK;
+ /* Don't change EXPR.ORIGINAL_TYPE. */
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
}
case RID_FUNCTION_NAME:
case RID_PRETTY_FUNCTION_NAME:
case RID_C99_FUNCTION_NAME:
- expr.value = fname_decl (c_parser_peek_token (parser)->keyword,
+ expr.value = fname_decl (loc,
+ c_parser_peek_token (parser)->keyword,
c_parser_peek_token (parser)->value);
- expr.original_code = ERROR_MARK;
c_parser_consume_token (parser);
break;
case RID_VA_ARG:
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
e1 = c_parser_expr_no_commas (parser, NULL);
+ mark_exp_read (e1.value);
+ e1.value = c_fully_fold (e1.value, false, NULL);
if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
+ loc = c_parser_peek_token (parser)->location;
t1 = c_parser_type_name (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
if (t1 == NULL)
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
}
else
{
- expr.value = build_va_arg (e1.value, groktypename (t1));
- expr.original_code = ERROR_MARK;
+ tree type_expr = NULL_TREE;
+ expr.value = c_build_va_arg (loc, e1.value,
+ groktypename (t1, &type_expr, NULL));
+ if (type_expr)
+ {
+ expr.value = build2 (C_MAYBE_CONST_EXPR,
+ TREE_TYPE (expr.value), type_expr,
+ expr.value);
+ C_MAYBE_CONST_EXPR_NON_CONST (expr.value) = true;
+ }
}
break;
case RID_OFFSETOF:
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
t1 = c_parser_type_name (parser);
if (t1 == NULL)
- {
- expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
- break;
- }
+ parser->error = true;
if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
+ gcc_assert (parser->error);
+ if (parser->error)
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
+
{
- tree type = groktypename (t1);
+ tree type = groktypename (t1, NULL, NULL);
tree offsetof_ref;
if (type == error_mark_node)
offsetof_ref = error_mark_node;
else
- offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node);
+ {
+ offsetof_ref = build1 (INDIRECT_REF, type, null_pointer_node);
+ SET_EXPR_LOCATION (offsetof_ref, loc);
+ }
/* Parse the second argument to __builtin_offsetof. We
must have one identifier, and beyond that we want to
accept sub structure and sub array references. */
if (c_parser_next_token_is (parser, CPP_NAME))
{
offsetof_ref = build_component_ref
- (offsetof_ref, c_parser_peek_token (parser)->value);
+ (loc, offsetof_ref, c_parser_peek_token (parser)->value);
c_parser_consume_token (parser);
while (c_parser_next_token_is (parser, CPP_DOT)
|| c_parser_next_token_is (parser,
- CPP_OPEN_SQUARE))
+ CPP_OPEN_SQUARE)
+ || c_parser_next_token_is (parser,
+ CPP_DEREF))
{
- if (c_parser_next_token_is (parser, CPP_DOT))
+ if (c_parser_next_token_is (parser, CPP_DEREF))
+ {
+ loc = c_parser_peek_token (parser)->location;
+ offsetof_ref = build_array_ref (loc,
+ offsetof_ref,
+ integer_zero_node);
+ goto do_dot;
+ }
+ else if (c_parser_next_token_is (parser, CPP_DOT))
{
+ do_dot:
c_parser_consume_token (parser);
if (c_parser_next_token_is_not (parser,
CPP_NAME))
break;
}
offsetof_ref = build_component_ref
- (offsetof_ref,
+ (loc, offsetof_ref,
c_parser_peek_token (parser)->value);
c_parser_consume_token (parser);
}
else
{
tree idx;
+ loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
idx = c_parser_expression (parser).value;
+ idx = c_fully_fold (idx, false, NULL);
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
- offsetof_ref = build_array_ref (offsetof_ref, idx);
+ offsetof_ref = build_array_ref (loc, offsetof_ref, idx);
}
}
}
c_parser_error (parser, "expected identifier");
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
- expr.value = fold_offsetof (offsetof_ref, NULL_TREE);
- expr.original_code = ERROR_MARK;
+ expr.value = fold_offsetof (offsetof_ref);
}
break;
case RID_CHOOSE_EXPR:
- c_parser_consume_token (parser);
- if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
- {
- expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
- break;
- }
- loc = c_parser_peek_token (parser)->location;
- e1 = c_parser_expr_no_commas (parser, NULL);
- if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
- {
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
- break;
- }
- e2 = c_parser_expr_no_commas (parser, NULL);
- if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
- {
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
- break;
- }
- e3 = c_parser_expr_no_commas (parser, NULL);
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
- "expected %<)%>");
{
+ VEC (c_expr_t, gc) *cexpr_list;
+ c_expr_t *e1_p, *e2_p, *e3_p;
tree c;
- c = fold (e1.value);
- if (TREE_CODE (c) != INTEGER_CST)
- error ("%Hfirst argument to %<__builtin_choose_expr%> not"
- " a constant", &loc);
- expr = integer_zerop (c) ? e3 : e2;
+ c_parser_consume_token (parser);
+ if (!c_parser_get_builtin_args (parser,
+ "__builtin_choose_expr",
+ &cexpr_list))
+ {
+ expr.value = error_mark_node;
+ break;
+ }
+
+ if (VEC_length (c_expr_t, cexpr_list) != 3)
+ {
+ error_at (loc, "wrong number of arguments to "
+ "%<__builtin_choose_expr%>");
+ expr.value = error_mark_node;
+ break;
+ }
+
+ e1_p = VEC_index (c_expr_t, cexpr_list, 0);
+ e2_p = VEC_index (c_expr_t, cexpr_list, 1);
+ e3_p = VEC_index (c_expr_t, cexpr_list, 2);
+
+ c = e1_p->value;
+ mark_exp_read (e2_p->value);
+ mark_exp_read (e3_p->value);
+ if (TREE_CODE (c) != INTEGER_CST
+ || !INTEGRAL_TYPE_P (TREE_TYPE (c)))
+ error_at (loc,
+ "first argument to %<__builtin_choose_expr%> not"
+ " a constant");
+ constant_expression_warning (c);
+ expr = integer_zerop (c) ? *e3_p : *e2_p;
+ break;
}
- break;
case RID_TYPES_COMPATIBLE_P:
c_parser_consume_token (parser);
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
t1 = c_parser_type_name (parser);
if (t1 == NULL)
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
if (!c_parser_require (parser, CPP_COMMA, "expected %<,%>"))
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
t2 = c_parser_type_name (parser);
if (t2 == NULL)
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
{
tree e1, e2;
+ e1 = groktypename (t1, NULL, NULL);
+ e2 = groktypename (t2, NULL, NULL);
+ if (e1 == error_mark_node || e2 == error_mark_node)
+ {
+ expr.value = error_mark_node;
+ break;
+ }
- e1 = TYPE_MAIN_VARIANT (groktypename (t1));
- e2 = TYPE_MAIN_VARIANT (groktypename (t2));
+ e1 = TYPE_MAIN_VARIANT (e1);
+ e2 = TYPE_MAIN_VARIANT (e2);
- expr.value = comptypes (e1, e2)
- ? build_int_cst (NULL_TREE, 1)
- : build_int_cst (NULL_TREE, 0);
- expr.original_code = ERROR_MARK;
+ expr.value
+ = comptypes (e1, e2) ? integer_one_node : integer_zero_node;
}
break;
+ case RID_BUILTIN_COMPLEX:
+ {
+ VEC(c_expr_t, gc) *cexpr_list;
+ c_expr_t *e1_p, *e2_p;
+
+ c_parser_consume_token (parser);
+ if (!c_parser_get_builtin_args (parser,
+ "__builtin_complex",
+ &cexpr_list))
+ {
+ expr.value = error_mark_node;
+ break;
+ }
+
+ if (VEC_length (c_expr_t, cexpr_list) != 2)
+ {
+ error_at (loc, "wrong number of arguments to "
+ "%<__builtin_complex%>");
+ expr.value = error_mark_node;
+ break;
+ }
+
+ e1_p = VEC_index (c_expr_t, cexpr_list, 0);
+ e2_p = VEC_index (c_expr_t, cexpr_list, 1);
+
+ mark_exp_read (e1_p->value);
+ if (TREE_CODE (e1_p->value) == EXCESS_PRECISION_EXPR)
+ e1_p->value = convert (TREE_TYPE (e1_p->value),
+ TREE_OPERAND (e1_p->value, 0));
+ mark_exp_read (e2_p->value);
+ if (TREE_CODE (e2_p->value) == EXCESS_PRECISION_EXPR)
+ e2_p->value = convert (TREE_TYPE (e2_p->value),
+ TREE_OPERAND (e2_p->value, 0));
+ if (!SCALAR_FLOAT_TYPE_P (TREE_TYPE (e1_p->value))
+ || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e1_p->value))
+ || !SCALAR_FLOAT_TYPE_P (TREE_TYPE (e2_p->value))
+ || DECIMAL_FLOAT_TYPE_P (TREE_TYPE (e2_p->value)))
+ {
+ error_at (loc, "%<__builtin_complex%> operand "
+ "not of real binary floating-point type");
+ expr.value = error_mark_node;
+ break;
+ }
+ if (TYPE_MAIN_VARIANT (TREE_TYPE (e1_p->value))
+ != TYPE_MAIN_VARIANT (TREE_TYPE (e2_p->value)))
+ {
+ error_at (loc,
+ "%<__builtin_complex%> operands of different types");
+ expr.value = error_mark_node;
+ break;
+ }
+ if (!flag_isoc99)
+ pedwarn (loc, OPT_pedantic,
+ "ISO C90 does not support complex types");
+ expr.value = build2 (COMPLEX_EXPR,
+ build_complex_type
+ (TYPE_MAIN_VARIANT
+ (TREE_TYPE (e1_p->value))),
+ e1_p->value, e2_p->value);
+ break;
+ }
+ case RID_BUILTIN_SHUFFLE:
+ {
+ VEC(c_expr_t,gc) *cexpr_list;
+ unsigned int i;
+ c_expr_t *p;
+
+ c_parser_consume_token (parser);
+ if (!c_parser_get_builtin_args (parser,
+ "__builtin_shuffle",
+ &cexpr_list))
+ {
+ expr.value = error_mark_node;
+ break;
+ }
+
+ FOR_EACH_VEC_ELT (c_expr_t, cexpr_list, i, p)
+ mark_exp_read (p->value);
+
+ if (VEC_length (c_expr_t, cexpr_list) == 2)
+ expr.value =
+ c_build_vec_perm_expr
+ (loc, VEC_index (c_expr_t, cexpr_list, 0)->value,
+ NULL_TREE, VEC_index (c_expr_t, cexpr_list, 1)->value);
+
+ else if (VEC_length (c_expr_t, cexpr_list) == 3)
+ expr.value =
+ c_build_vec_perm_expr
+ (loc, VEC_index (c_expr_t, cexpr_list, 0)->value,
+ VEC_index (c_expr_t, cexpr_list, 1)->value,
+ VEC_index (c_expr_t, cexpr_list, 2)->value);
+ else
+ {
+ error_at (loc, "wrong number of arguments to "
+ "%<__builtin_shuffle%>");
+ expr.value = error_mark_node;
+ }
+ break;
+ }
case RID_AT_SELECTOR:
gcc_assert (c_dialect_objc ());
c_parser_consume_token (parser);
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
{
tree sel = c_parser_objc_selector_arg (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
- expr.value = objc_build_selector_expr (sel);
- expr.original_code = ERROR_MARK;
+ expr.value = objc_build_selector_expr (loc, sel);
}
break;
case RID_AT_PROTOCOL:
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
if (c_parser_next_token_is_not (parser, CPP_NAME))
c_parser_error (parser, "expected identifier");
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
{
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
expr.value = objc_build_protocol_expr (id);
- expr.original_code = ERROR_MARK;
}
break;
case RID_AT_ENCODE:
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
t1 = c_parser_type_name (parser);
if (t1 == NULL)
{
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
break;
}
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
{
- tree type = groktypename (t1);
+ tree type = groktypename (t1, NULL, NULL);
expr.value = objc_build_encode_expr (type);
- expr.original_code = ERROR_MARK;
}
break;
default:
c_parser_error (parser, "expected expression");
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
break;
args = c_parser_objc_message_args (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
- expr.value = objc_build_message_expr (build_tree_list (receiver,
- args));
- expr.original_code = ERROR_MARK;
+ expr.value = objc_build_message_expr (receiver, args);
break;
}
/* Else fall through to report error. */
default:
c_parser_error (parser, "expected expression");
expr.value = error_mark_node;
- expr.original_code = ERROR_MARK;
break;
}
- return c_parser_postfix_expression_after_primary (parser, expr);
+ return c_parser_postfix_expression_after_primary (parser, loc, expr);
}
/* Parse a postfix expression after a parenthesized type name: the
possible to tell until after the type name whether a cast
expression has a cast or a compound literal, or whether the operand
of sizeof is a parenthesized type name or starts with a compound
- literal. */
+ literal. TYPE_LOC is the location where TYPE_NAME starts--the
+ location of the first token after the parentheses around the type
+ name. */
static struct c_expr
c_parser_postfix_expression_after_paren_type (c_parser *parser,
- struct c_type_name *type_name)
+ struct c_type_name *type_name,
+ location_t type_loc)
{
tree type;
struct c_expr init;
+ bool non_const;
struct c_expr expr;
location_t start_loc;
+ tree type_expr = NULL_TREE;
+ bool type_expr_const = true;
+ check_compound_literal_type (type_loc, type_name);
start_init (NULL_TREE, NULL, 0);
- type = groktypename (type_name);
+ type = groktypename (type_name, &type_expr, &type_expr_const);
start_loc = c_parser_peek_token (parser)->location;
if (type != error_mark_node && C_TYPE_VARIABLE_SIZE (type))
{
- error ("%Hcompound literal has variable size", &start_loc);
+ error_at (type_loc, "compound literal has variable size");
type = error_mark_node;
}
init = c_parser_braced_init (parser, type, false);
finish_init ();
maybe_warn_string_init (type, init);
- if (pedantic && !flag_isoc99)
- pedwarn ("%HISO C90 forbids compound literals", &start_loc);
- expr.value = build_compound_literal (type, init.value);
+ if (type != error_mark_node
+ && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type))
+ && current_function_decl)
+ {
+ error ("compound literal qualified by address-space qualifier");
+ type = error_mark_node;
+ }
+
+ if (!flag_isoc99)
+ pedwarn (start_loc, OPT_pedantic, "ISO C90 forbids compound literals");
+ non_const = ((init.value && TREE_CODE (init.value) == CONSTRUCTOR)
+ ? CONSTRUCTOR_NON_CONST (init.value)
+ : init.original_code == C_MAYBE_CONST_EXPR);
+ non_const |= !type_expr_const;
+ expr.value = build_compound_literal (start_loc, type, init.value, non_const);
expr.original_code = ERROR_MARK;
- return c_parser_postfix_expression_after_primary (parser, expr);
+ expr.original_type = NULL;
+ if (type_expr)
+ {
+ if (TREE_CODE (expr.value) == C_MAYBE_CONST_EXPR)
+ {
+ gcc_assert (C_MAYBE_CONST_EXPR_PRE (expr.value) == NULL_TREE);
+ C_MAYBE_CONST_EXPR_PRE (expr.value) = type_expr;
+ }
+ else
+ {
+ gcc_assert (!non_const);
+ expr.value = build2 (C_MAYBE_CONST_EXPR, type,
+ type_expr, expr.value);
+ }
+ }
+ return c_parser_postfix_expression_after_primary (parser, start_loc, expr);
}
/* Parse a postfix expression after the initial primary or compound
- literal; that is, parse a series of postfix operators. */
+ literal; that is, parse a series of postfix operators.
+
+ EXPR_LOC is the location of the primary expression. */
static struct c_expr
c_parser_postfix_expression_after_primary (c_parser *parser,
+ location_t expr_loc,
struct c_expr expr)
{
- tree ident, idx, exprlist;
+ struct c_expr orig_expr;
+ tree ident, idx;
+ VEC(tree,gc) *exprlist;
+ VEC(tree,gc) *origtypes;
while (true)
{
+ location_t op_loc = c_parser_peek_token (parser)->location;
switch (c_parser_peek_token (parser)->type)
{
case CPP_OPEN_SQUARE:
idx = c_parser_expression (parser).value;
c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE,
"expected %<]%>");
- expr.value = build_array_ref (expr.value, idx);
+ expr.value = build_array_ref (op_loc, expr.value, idx);
expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
break;
case CPP_OPEN_PAREN:
/* Function call. */
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
- exprlist = NULL_TREE;
+ exprlist = NULL;
else
- exprlist = c_parser_expr_list (parser, true);
+ exprlist = c_parser_expr_list (parser, true, false, &origtypes);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
- expr.value = build_function_call (expr.value, exprlist);
+ orig_expr = expr;
+ mark_exp_read (expr.value);
+ /* FIXME diagnostics: Ideally we want the FUNCNAME, not the
+ "(" after the FUNCNAME, which is what we have now. */
+ expr.value = build_function_call_vec (op_loc, expr.value, exprlist,
+ origtypes);
expr.original_code = ERROR_MARK;
+ if (TREE_CODE (expr.value) == INTEGER_CST
+ && TREE_CODE (orig_expr.value) == FUNCTION_DECL
+ && DECL_BUILT_IN_CLASS (orig_expr.value) == BUILT_IN_NORMAL
+ && DECL_FUNCTION_CODE (orig_expr.value) == BUILT_IN_CONSTANT_P)
+ expr.original_code = C_MAYBE_CONST_EXPR;
+ expr.original_type = NULL;
+ if (exprlist != NULL)
+ {
+ release_tree_vector (exprlist);
+ release_tree_vector (origtypes);
+ }
break;
case CPP_DOT:
/* Structure element reference. */
c_parser_consume_token (parser);
- expr = default_function_array_conversion (expr);
+ expr = default_function_array_conversion (expr_loc, expr);
if (c_parser_next_token_is (parser, CPP_NAME))
ident = c_parser_peek_token (parser)->value;
else
c_parser_error (parser, "expected identifier");
expr.value = error_mark_node;
expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
return expr;
}
c_parser_consume_token (parser);
- expr.value = build_component_ref (expr.value, ident);
+ expr.value = build_component_ref (op_loc, expr.value, ident);
expr.original_code = ERROR_MARK;
+ if (TREE_CODE (expr.value) != COMPONENT_REF)
+ expr.original_type = NULL;
+ else
+ {
+ /* Remember the original type of a bitfield. */
+ tree field = TREE_OPERAND (expr.value, 1);
+ if (TREE_CODE (field) != FIELD_DECL)
+ expr.original_type = NULL;
+ else
+ expr.original_type = DECL_BIT_FIELD_TYPE (field);
+ }
break;
case CPP_DEREF:
/* Structure element reference. */
c_parser_consume_token (parser);
- expr = default_function_array_conversion (expr);
+ expr = default_function_array_conversion (expr_loc, expr);
if (c_parser_next_token_is (parser, CPP_NAME))
ident = c_parser_peek_token (parser)->value;
else
c_parser_error (parser, "expected identifier");
expr.value = error_mark_node;
expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
return expr;
}
c_parser_consume_token (parser);
- expr.value = build_component_ref (build_indirect_ref (expr.value,
- "->"), ident);
+ expr.value = build_component_ref (op_loc,
+ build_indirect_ref (op_loc,
+ expr.value,
+ RO_ARROW),
+ ident);
expr.original_code = ERROR_MARK;
+ if (TREE_CODE (expr.value) != COMPONENT_REF)
+ expr.original_type = NULL;
+ else
+ {
+ /* Remember the original type of a bitfield. */
+ tree field = TREE_OPERAND (expr.value, 1);
+ if (TREE_CODE (field) != FIELD_DECL)
+ expr.original_type = NULL;
+ else
+ expr.original_type = DECL_BIT_FIELD_TYPE (field);
+ }
break;
case CPP_PLUS_PLUS:
/* Postincrement. */
c_parser_consume_token (parser);
- expr = default_function_array_conversion (expr);
- expr.value = build_unary_op (POSTINCREMENT_EXPR, expr.value, 0);
+ expr = default_function_array_read_conversion (expr_loc, expr);
+ expr.value = build_unary_op (op_loc,
+ POSTINCREMENT_EXPR, expr.value, 0);
expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
break;
case CPP_MINUS_MINUS:
/* Postdecrement. */
c_parser_consume_token (parser);
- expr = default_function_array_conversion (expr);
- expr.value = build_unary_op (POSTDECREMENT_EXPR, expr.value, 0);
+ expr = default_function_array_read_conversion (expr_loc, expr);
+ expr.value = build_unary_op (op_loc,
+ POSTDECREMENT_EXPR, expr.value, 0);
expr.original_code = ERROR_MARK;
+ expr.original_type = NULL;
break;
default:
return expr;
while (c_parser_next_token_is (parser, CPP_COMMA))
{
struct c_expr next;
+ tree lhsval;
+ location_t loc = c_parser_peek_token (parser)->location;
+ location_t expr_loc;
c_parser_consume_token (parser);
+ expr_loc = c_parser_peek_token (parser)->location;
+ lhsval = expr.value;
+ while (TREE_CODE (lhsval) == COMPOUND_EXPR)
+ lhsval = TREE_OPERAND (lhsval, 1);
+ if (DECL_P (lhsval) || handled_component_p (lhsval))
+ mark_exp_read (lhsval);
next = c_parser_expr_no_commas (parser, NULL);
- next = default_function_array_conversion (next);
- expr.value = build_compound_expr (expr.value, next.value);
+ next = default_function_array_conversion (expr_loc, next);
+ expr.value = build_compound_expr (loc, expr.value, next.value);
expr.original_code = COMPOUND_EXPR;
+ expr.original_type = next.original_type;
}
return expr;
}
c_parser_expression_conv (c_parser *parser)
{
struct c_expr expr;
+ location_t loc = c_parser_peek_token (parser)->location;
expr = c_parser_expression (parser);
- expr = default_function_array_conversion (expr);
+ expr = default_function_array_conversion (loc, expr);
return expr;
}
/* Parse a non-empty list of expressions. If CONVERT_P, convert
- functions and arrays to pointers.
+ functions and arrays to pointers. If FOLD_P, fold the expressions.
nonempty-expr-list:
assignment-expression
nonempty-expr-list , assignment-expression
*/
-static tree
-c_parser_expr_list (c_parser *parser, bool convert_p)
+static VEC(tree,gc) *
+c_parser_expr_list (c_parser *parser, bool convert_p, bool fold_p,
+ VEC(tree,gc) **p_orig_types)
{
+ VEC(tree,gc) *ret;
+ VEC(tree,gc) *orig_types;
struct c_expr expr;
- tree ret, cur;
+ location_t loc = c_parser_peek_token (parser)->location;
+
+ ret = make_tree_vector ();
+ if (p_orig_types == NULL)
+ orig_types = NULL;
+ else
+ orig_types = make_tree_vector ();
+
expr = c_parser_expr_no_commas (parser, NULL);
if (convert_p)
- expr = default_function_array_conversion (expr);
- ret = cur = build_tree_list (NULL_TREE, expr.value);
+ expr = default_function_array_read_conversion (loc, expr);
+ if (fold_p)
+ expr.value = c_fully_fold (expr.value, false, NULL);
+ VEC_quick_push (tree, ret, expr.value);
+ if (orig_types != NULL)
+ VEC_quick_push (tree, orig_types, expr.original_type);
while (c_parser_next_token_is (parser, CPP_COMMA))
{
c_parser_consume_token (parser);
+ loc = c_parser_peek_token (parser)->location;
expr = c_parser_expr_no_commas (parser, NULL);
if (convert_p)
- expr = default_function_array_conversion (expr);
- cur = TREE_CHAIN (cur) = build_tree_list (NULL_TREE, expr.value);
- }
+ expr = default_function_array_read_conversion (loc, expr);
+ if (fold_p)
+ expr.value = c_fully_fold (expr.value, false, NULL);
+ VEC_safe_push (tree, gc, ret, expr.value);
+ if (orig_types != NULL)
+ VEC_safe_push (tree, gc, orig_types, expr.original_type);
+ }
+ if (orig_types != NULL)
+ *p_orig_types = orig_types;
return ret;
}
-
\f
/* Parse Objective-C-specific constructs. */
objc-class-instance-variables[opt]
@interface identifier ( identifier ) objc-protocol-refs[opt]
objc-methodprotolist @end
+ @interface identifier ( ) objc-protocol-refs[opt]
+ objc-methodprotolist @end
@implementation identifier ( identifier )
objc-superclass:
objc-protocol-refs and objc-class-instance-variables are omitted. */
static void
-c_parser_objc_class_definition (c_parser *parser)
+c_parser_objc_class_definition (c_parser *parser, tree attributes)
{
bool iface_p;
tree id1;
iface_p = false;
else
gcc_unreachable ();
+
c_parser_consume_token (parser);
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
{
+ /* We have a category or class extension. */
tree id2;
tree proto = NULL_TREE;
c_parser_consume_token (parser);
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
- c_parser_error (parser, "expected identifier");
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- return;
+ if (iface_p && c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
+ {
+ /* We have a class extension. */
+ id2 = NULL_TREE;
+ }
+ else
+ {
+ c_parser_error (parser, "expected identifier or %<)%>");
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
+ return;
+ }
+ }
+ else
+ {
+ id2 = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
}
- id2 = c_parser_peek_token (parser)->value;
- c_parser_consume_token (parser);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
if (!iface_p)
{
}
if (c_parser_next_token_is (parser, CPP_LESS))
proto = c_parser_objc_protocol_refs (parser);
- objc_start_category_interface (id1, id2, proto);
+ objc_start_category_interface (id1, id2, proto, attributes);
c_parser_objc_methodprotolist (parser);
c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>");
objc_finish_interface ();
tree proto = NULL_TREE;
if (c_parser_next_token_is (parser, CPP_LESS))
proto = c_parser_objc_protocol_refs (parser);
- objc_start_class_interface (id1, superclass, proto);
+ objc_start_class_interface (id1, superclass, proto, attributes);
}
else
objc_start_class_implementation (id1, superclass);
/* Parse any stray semicolon. */
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
- if (pedantic)
- pedwarn ("%Hextra semicolon in struct or union specified",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "extra semicolon");
c_parser_consume_token (parser);
continue;
}
if (c_parser_next_token_is_keyword (parser, RID_AT_PRIVATE))
{
c_parser_consume_token (parser);
- objc_set_visibility (2);
+ objc_set_visibility (OBJC_IVAR_VIS_PRIVATE);
continue;
}
else if (c_parser_next_token_is_keyword (parser, RID_AT_PROTECTED))
{
c_parser_consume_token (parser);
- objc_set_visibility (0);
+ objc_set_visibility (OBJC_IVAR_VIS_PROTECTED);
continue;
}
else if (c_parser_next_token_is_keyword (parser, RID_AT_PUBLIC))
{
c_parser_consume_token (parser);
- objc_set_visibility (1);
+ objc_set_visibility (OBJC_IVAR_VIS_PUBLIC);
+ continue;
+ }
+ else if (c_parser_next_token_is_keyword (parser, RID_AT_PACKAGE))
+ {
+ c_parser_consume_token (parser);
+ objc_set_visibility (OBJC_IVAR_VIS_PACKAGE);
continue;
}
else if (c_parser_next_token_is (parser, CPP_PRAGMA))
/* Parse some comma-separated declarations. */
decls = c_parser_struct_declaration (parser);
- {
- /* Comma-separated instance variables are chained together in
- reverse order; add them one by one. */
- tree ivar = nreverse (decls);
- for (; ivar; ivar = TREE_CHAIN (ivar))
- objc_add_instance_variable (copy_node (ivar));
- }
+ if (decls == NULL)
+ {
+ /* There is a syntax error. We want to skip the offending
+ tokens up to the next ';' (included) or '}'
+ (excluded). */
+
+ /* First, skip manually a ')' or ']'. This is because they
+ reduce the nesting level, so c_parser_skip_until_found()
+ wouldn't be able to skip past them. */
+ c_token *token = c_parser_peek_token (parser);
+ if (token->type == CPP_CLOSE_PAREN || token->type == CPP_CLOSE_SQUARE)
+ c_parser_consume_token (parser);
+
+ /* Then, do the standard skipping. */
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+
+ /* We hopefully recovered. Start normal parsing again. */
+ parser->error = false;
+ continue;
+ }
+ else
+ {
+ /* Comma-separated instance variables are chained together
+ in reverse order; add them one by one. */
+ tree ivar = nreverse (decls);
+ for (; ivar; ivar = DECL_CHAIN (ivar))
+ objc_add_instance_variable (copy_node (ivar));
+ }
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
}
static void
c_parser_objc_class_declaration (c_parser *parser)
{
- tree list = NULL_TREE;
gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_CLASS));
c_parser_consume_token (parser);
/* Any identifiers, including those declared as type names, are OK
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
c_parser_error (parser, "expected identifier");
- break;
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+ parser->error = false;
+ return;
}
id = c_parser_peek_token (parser)->value;
- list = chainon (list, build_tree_list (NULL_TREE, id));
+ objc_declare_class (id);
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COMMA))
c_parser_consume_token (parser);
break;
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
- objc_declare_class (list);
}
/* Parse an objc-alias-declaration.
omitted. */
static void
-c_parser_objc_protocol_definition (c_parser *parser)
+c_parser_objc_protocol_definition (c_parser *parser, tree attributes)
{
gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROTOCOL));
+
c_parser_consume_token (parser);
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
if (c_parser_peek_2nd_token (parser)->type == CPP_COMMA
|| c_parser_peek_2nd_token (parser)->type == CPP_SEMICOLON)
{
- tree list = NULL_TREE;
/* Any identifiers, including those declared as type names, are
OK here. */
while (true)
break;
}
id = c_parser_peek_token (parser)->value;
- list = chainon (list, build_tree_list (NULL_TREE, id));
+ objc_declare_protocol (id, attributes);
c_parser_consume_token (parser);
if (c_parser_next_token_is (parser, CPP_COMMA))
c_parser_consume_token (parser);
break;
}
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
- objc_declare_protocols (list);
}
else
{
if (c_parser_next_token_is (parser, CPP_LESS))
proto = c_parser_objc_protocol_refs (parser);
parser->objc_pq_context = true;
- objc_start_protocol (id, proto);
+ objc_start_protocol (id, proto, attributes);
c_parser_objc_methodprotolist (parser);
c_parser_require_keyword (parser, RID_AT_END, "expected %<@end%>");
parser->objc_pq_context = false;
objc-method-type:
+
-
-*/
-static enum tree_code
+ Return true if it is a class method (+) and false if it is
+ an instance method (-).
+*/
+static inline bool
c_parser_objc_method_type (c_parser *parser)
{
switch (c_parser_peek_token (parser)->type)
{
case CPP_PLUS:
c_parser_consume_token (parser);
- return PLUS_EXPR;
+ return true;
case CPP_MINUS:
c_parser_consume_token (parser);
- return MINUS_EXPR;
+ return false;
default:
gcc_unreachable ();
}
static void
c_parser_objc_method_definition (c_parser *parser)
{
- enum tree_code type = c_parser_objc_method_type (parser);
- tree decl;
- objc_set_method_type (type);
+ bool is_class_method = c_parser_objc_method_type (parser);
+ tree decl, attributes = NULL_TREE, expr = NULL_TREE;
parser->objc_pq_context = true;
- decl = c_parser_objc_method_decl (parser);
+ decl = c_parser_objc_method_decl (parser, is_class_method, &attributes,
+ &expr);
+ if (decl == error_mark_node)
+ return; /* Bail here. */
+
if (c_parser_next_token_is (parser, CPP_SEMICOLON))
{
c_parser_consume_token (parser);
- if (pedantic)
- pedwarn ("%Hextra semicolon in method definition specified",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "extra semicolon in method definition specified");
}
+
if (!c_parser_next_token_is (parser, CPP_OPEN_BRACE))
{
c_parser_error (parser, "expected %<{%>");
return;
}
+
parser->objc_pq_context = false;
- objc_start_method_definition (decl);
- add_stmt (c_parser_compound_statement (parser));
- objc_finish_method_definition (current_function_decl);
+ if (objc_start_method_definition (is_class_method, decl, attributes, expr))
+ {
+ add_stmt (c_parser_compound_statement (parser));
+ objc_finish_method_definition (current_function_decl);
+ }
+ else
+ {
+ /* This code is executed when we find a method definition
+ outside of an @implementation context (or invalid for other
+ reasons). Parse the method (to keep going) but do not emit
+ any code.
+ */
+ c_parser_compound_statement (parser);
+ }
}
/* Parse an objc-methodprotolist.
objc-methodprotolist objc-methodproto
objc-methodprotolist declaration
objc-methodprotolist ;
+ @optional
+ @required
The declaration is a data definition, which may be missing
declaration specifiers under the same rules and diagnostics as
switch (c_parser_peek_token (parser)->type)
{
case CPP_SEMICOLON:
- if (pedantic)
- pedwarn ("%HISO C does not allow extra %<;%> "
- "outside of a function",
- &c_parser_peek_token (parser)->location);
+ pedwarn (c_parser_peek_token (parser)->location, OPT_pedantic,
+ "ISO C does not allow extra %<;%> outside of a function");
c_parser_consume_token (parser);
break;
case CPP_PLUS:
default:
if (c_parser_next_token_is_keyword (parser, RID_AT_END))
return;
- c_parser_declaration_or_fndef (parser, false, true, false, true);
+ else if (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY))
+ c_parser_objc_at_property_declaration (parser);
+ else if (c_parser_next_token_is_keyword (parser, RID_AT_OPTIONAL))
+ {
+ objc_set_method_opt (true);
+ c_parser_consume_token (parser);
+ }
+ else if (c_parser_next_token_is_keyword (parser, RID_AT_REQUIRED))
+ {
+ objc_set_method_opt (false);
+ c_parser_consume_token (parser);
+ }
+ else
+ c_parser_declaration_or_fndef (parser, false, false, true,
+ false, true, NULL);
break;
}
}
static void
c_parser_objc_methodproto (c_parser *parser)
{
- enum tree_code type = c_parser_objc_method_type (parser);
- tree decl;
- objc_set_method_type (type);
+ bool is_class_method = c_parser_objc_method_type (parser);
+ tree decl, attributes = NULL_TREE;
+
/* Remember protocol qualifiers in prototypes. */
parser->objc_pq_context = true;
- decl = c_parser_objc_method_decl (parser);
- /* Forget protocol qualifiers here. */
+ decl = c_parser_objc_method_decl (parser, is_class_method, &attributes,
+ NULL);
+ /* Forget protocol qualifiers now. */
parser->objc_pq_context = false;
- objc_add_method_declaration (decl);
+
+ /* Do not allow the presence of attributes to hide an erroneous
+ method implementation in the interface section. */
+ if (!c_parser_next_token_is (parser, CPP_SEMICOLON))
+ {
+ c_parser_error (parser, "expected %<;%>");
+ return;
+ }
+
+ if (decl != error_mark_node)
+ objc_add_method_declaration (is_class_method, decl, attributes);
+
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
+/* If we are at a position that method attributes may be present, check that
+ there are not any parsed already (a syntax error) and then collect any
+ specified at the current location. Finally, if new attributes were present,
+ check that the next token is legal ( ';' for decls and '{' for defs). */
+
+static bool
+c_parser_objc_maybe_method_attributes (c_parser* parser, tree* attributes)
+{
+ bool bad = false;
+ if (*attributes)
+ {
+ c_parser_error (parser,
+ "method attributes must be specified at the end only");
+ *attributes = NULL_TREE;
+ bad = true;
+ }
+
+ if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
+ *attributes = c_parser_attributes (parser);
+
+ /* If there were no attributes here, just report any earlier error. */
+ if (*attributes == NULL_TREE || bad)
+ return bad;
+
+ /* If the attributes are followed by a ; or {, then just report any earlier
+ error. */
+ if (c_parser_next_token_is (parser, CPP_SEMICOLON)
+ || c_parser_next_token_is (parser, CPP_OPEN_BRACE))
+ return bad;
+
+ /* We've got attributes, but not at the end. */
+ c_parser_error (parser,
+ "expected %<;%> or %<{%> after method attribute definition");
+ return true;
+}
+
/* Parse an objc-method-decl.
objc-method-decl:
objc-selector
( objc-type-name ) objc-keyword-selector objc-optparmlist
objc-keyword-selector objc-optparmlist
+ attributes
objc-keyword-selector:
objc-keyword-decl
*/
static tree
-c_parser_objc_method_decl (c_parser *parser)
+c_parser_objc_method_decl (c_parser *parser, bool is_class_method,
+ tree *attributes, tree *expr)
{
tree type = NULL_TREE;
tree sel;
tree parms = NULL_TREE;
bool ellipsis = false;
+ bool attr_err = false;
+ *attributes = NULL_TREE;
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
{
c_parser_consume_token (parser);
while (true)
{
tree atype = NULL_TREE, id, keyworddecl;
+ tree param_attr = NULL_TREE;
if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
break;
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
"expected %<)%>");
}
+ /* New ObjC allows attributes on method parameters. */
+ if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
+ param_attr = c_parser_attributes (parser);
if (c_parser_next_token_is_not (parser, CPP_NAME))
{
c_parser_error (parser, "expected identifier");
}
id = c_parser_peek_token (parser)->value;
c_parser_consume_token (parser);
- keyworddecl = objc_build_keyword_decl (tsel, atype, id);
+ keyworddecl = objc_build_keyword_decl (tsel, atype, id, param_attr);
list = chainon (list, keyworddecl);
tsel = c_parser_objc_selector (parser);
if (!tsel && c_parser_next_token_is_not (parser, CPP_COLON))
break;
}
+
+ attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ;
+
/* Parse the optional parameter list. Optional Objective-C
method parameters follow the C syntax, and may include '...'
to denote a variable number of arguments. */
{
ellipsis = true;
c_parser_consume_token (parser);
+ attr_err |= c_parser_objc_maybe_method_attributes
+ (parser, attributes) ;
break;
}
parm = c_parser_parameter_declaration (parser, NULL_TREE);
if (parm == NULL)
break;
parms = chainon (parms,
- build_tree_list (NULL_TREE, grokparm (parm)));
+ build_tree_list (NULL_TREE, grokparm (parm, expr)));
}
sel = list;
}
- return objc_build_method_signature (type, sel, parms, ellipsis);
+ else
+ attr_err |= c_parser_objc_maybe_method_attributes (parser, attributes) ;
+
+ if (sel == NULL)
+ {
+ c_parser_error (parser, "objective-c method declaration is expected");
+ return error_mark_node;
+ }
+
+ if (attr_err)
+ return error_mark_node;
+
+ return objc_build_method_signature (is_class_method, type, sel, parms, ellipsis);
}
/* Parse an objc-type-name.
c_parser_objc_type_name (c_parser *parser)
{
tree quals = NULL_TREE;
- struct c_type_name *typename = NULL;
+ struct c_type_name *type_name = NULL;
tree type = NULL_TREE;
while (true)
{
|| token->keyword == RID_BYREF
|| token->keyword == RID_ONEWAY))
{
- quals = chainon (quals, build_tree_list (NULL_TREE, token->value));
+ quals = chainon (build_tree_list (NULL_TREE, token->value), quals);
c_parser_consume_token (parser);
}
else
break;
}
- if (c_parser_next_token_starts_typename (parser))
- typename = c_parser_type_name (parser);
- if (typename)
- type = groktypename (typename);
+ if (c_parser_next_tokens_start_typename (parser, cla_prefer_type))
+ type_name = c_parser_type_name (parser);
+ if (type_name)
+ type = groktypename (type_name, NULL, NULL);
+
+ /* If the type is unknown, and error has already been produced and
+ we need to recover from the error. In that case, use NULL_TREE
+ for the type, as if no type had been specified; this will use the
+ default type ('id') which is good for error recovery. */
+ if (type == error_mark_node)
+ type = NULL_TREE;
+
return build_tree_list (quals, type);
}
return list;
}
-/* Parse an objc-try-catch-statement.
+/* Parse an objc-try-catch-finally-statement.
- objc-try-catch-statement:
+ objc-try-catch-finally-statement:
@try compound-statement objc-catch-list[opt]
@try compound-statement objc-catch-list[opt] @finally compound-statement
objc-catch-list:
- @catch ( parameter-declaration ) compound-statement
- objc-catch-list @catch ( parameter-declaration ) compound-statement
-*/
+ @catch ( objc-catch-parameter-declaration ) compound-statement
+ objc-catch-list @catch ( objc-catch-parameter-declaration ) compound-statement
+
+ objc-catch-parameter-declaration:
+ parameter-declaration
+ '...'
+
+ where '...' is to be interpreted literally, that is, it means CPP_ELLIPSIS.
+
+ PS: This function is identical to cp_parser_objc_try_catch_finally_statement
+ for C++. Keep them in sync. */
static void
-c_parser_objc_try_catch_statement (c_parser *parser)
+c_parser_objc_try_catch_finally_statement (c_parser *parser)
{
- location_t loc;
+ location_t location;
tree stmt;
+
gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_TRY));
c_parser_consume_token (parser);
- loc = c_parser_peek_token (parser)->location;
+ location = c_parser_peek_token (parser)->location;
+ objc_maybe_warn_exceptions (location);
stmt = c_parser_compound_statement (parser);
- objc_begin_try_stmt (loc, stmt);
+ objc_begin_try_stmt (location, stmt);
+
while (c_parser_next_token_is_keyword (parser, RID_AT_CATCH))
{
struct c_parm *parm;
+ tree parameter_declaration = error_mark_node;
+ bool seen_open_paren = false;
+
c_parser_consume_token (parser);
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
- break;
- parm = c_parser_parameter_declaration (parser, NULL_TREE);
- if (parm == NULL)
+ seen_open_paren = true;
+ if (c_parser_next_token_is (parser, CPP_ELLIPSIS))
{
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
- break;
+ /* We have "@catch (...)" (where the '...' are literally
+ what is in the code). Skip the '...'.
+ parameter_declaration is set to NULL_TREE, and
+ objc_being_catch_clauses() knows that that means
+ '...'. */
+ c_parser_consume_token (parser);
+ parameter_declaration = NULL_TREE;
}
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
- objc_begin_catch_clause (grokparm (parm));
+ else
+ {
+ /* We have "@catch (NSException *exception)" or something
+ like that. Parse the parameter declaration. */
+ parm = c_parser_parameter_declaration (parser, NULL_TREE);
+ if (parm == NULL)
+ parameter_declaration = error_mark_node;
+ else
+ parameter_declaration = grokparm (parm, NULL);
+ }
+ if (seen_open_paren)
+ c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+ else
+ {
+ /* If there was no open parenthesis, we are recovering from
+ an error, and we are trying to figure out what mistake
+ the user has made. */
+
+ /* If there is an immediate closing parenthesis, the user
+ probably forgot the opening one (ie, they typed "@catch
+ NSException *e)". Parse the closing parenthesis and keep
+ going. */
+ if (c_parser_next_token_is (parser, CPP_CLOSE_PAREN))
+ c_parser_consume_token (parser);
+
+ /* If these is no immediate closing parenthesis, the user
+ probably doesn't know that parenthesis are required at
+ all (ie, they typed "@catch NSException *e"). So, just
+ forget about the closing parenthesis and keep going. */
+ }
+ objc_begin_catch_clause (parameter_declaration);
if (c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
c_parser_compound_statement_nostart (parser);
objc_finish_catch_clause ();
}
if (c_parser_next_token_is_keyword (parser, RID_AT_FINALLY))
{
- location_t finloc;
- tree finstmt;
c_parser_consume_token (parser);
- finloc = c_parser_peek_token (parser)->location;
- finstmt = c_parser_compound_statement (parser);
- objc_build_finally_clause (finloc, finstmt);
+ location = c_parser_peek_token (parser)->location;
+ stmt = c_parser_compound_statement (parser);
+ objc_build_finally_clause (location, stmt);
}
objc_finish_try_stmt ();
}
gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNCHRONIZED));
c_parser_consume_token (parser);
loc = c_parser_peek_token (parser)->location;
+ objc_maybe_warn_exceptions (loc);
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
expr = c_parser_expression (parser).value;
+ expr = c_fully_fold (expr, false, NULL);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
}
else
case RID_ALIGNOF:
case RID_UNSIGNED:
case RID_LONG:
+ case RID_INT128:
case RID_CONST:
case RID_SHORT:
case RID_VOLATILE:
c_parser_consume_token (parser);
return objc_get_class_reference (id);
}
- return c_parser_expression (parser).value;
+ return c_fully_fold (c_parser_expression (parser).value, false, NULL);
}
/* Parse objc-message-args.
{
tree keywordexpr;
if (!c_parser_require (parser, CPP_COLON, "expected %<:%>"))
- return list;
+ return error_mark_node;
keywordexpr = c_parser_objc_keywordexpr (parser);
list = chainon (list, build_tree_list (sel, keywordexpr));
sel = c_parser_objc_selector (parser);
static tree
c_parser_objc_keywordexpr (c_parser *parser)
{
- tree list = c_parser_expr_list (parser, true);
- if (TREE_CHAIN (list) == NULL_TREE)
+ tree ret;
+ VEC(tree,gc) *expr_list = c_parser_expr_list (parser, true, true, NULL);
+ if (VEC_length (tree, expr_list) == 1)
{
/* Just return the expression, remove a level of
indirection. */
- return TREE_VALUE (list);
+ ret = VEC_index (tree, expr_list, 0);
}
else
{
/* We have a comma expression, we will collapse later. */
- return list;
+ ret = build_tree_list_vec (expr_list);
}
+ release_tree_vector (expr_list);
+ return ret;
}
-\f
-/* Handle pragmas. Some OpenMP pragmas are associated with, and therefore
- should be considered, statements. ALLOW_STMT is true if we're within
- the context of a function and such pragmas are to be allowed. Returns
- true if we actually parsed such a pragma. */
-
+/* A check, needed in several places, that ObjC interface, implementation or
+ method definitions are not prefixed by incorrect items. */
static bool
-c_parser_pragma (c_parser *parser, enum pragma_context context)
+c_parser_objc_diagnose_bad_element_prefix (c_parser *parser,
+ struct c_declspecs *specs)
{
- unsigned int id;
+ if (!specs->declspecs_seen_p || specs->non_sc_seen_p
+ || specs->typespec_kind != ctsk_none)
+ {
+ c_parser_error (parser,
+ "no type or storage class may be specified here,");
+ c_parser_skip_to_end_of_block_or_statement (parser);
+ return true;
+ }
+ return false;
+}
- id = c_parser_peek_token (parser)->pragma_kind;
- gcc_assert (id != PRAGMA_NONE);
+/* Parse an Objective-C @property declaration. The syntax is:
- switch (id)
- {
- case PRAGMA_OMP_BARRIER:
- if (context != pragma_compound)
- {
- if (context == pragma_stmt)
- c_parser_error (parser, "%<#pragma omp barrier%> may only be "
- "used in compound statements");
+ objc-property-declaration:
+ '@property' objc-property-attributes[opt] struct-declaration ;
+
+ objc-property-attributes:
+ '(' objc-property-attribute-list ')'
+
+ objc-property-attribute-list:
+ objc-property-attribute
+ objc-property-attribute-list, objc-property-attribute
+
+ objc-property-attribute
+ 'getter' = identifier
+ 'setter' = identifier
+ 'readonly'
+ 'readwrite'
+ 'assign'
+ 'retain'
+ 'copy'
+ 'nonatomic'
+
+ For example:
+ @property NSString *name;
+ @property (readonly) id object;
+ @property (retain, nonatomic, getter=getTheName) id name;
+ @property int a, b, c;
+
+ PS: This function is identical to cp_parser_objc_at_propery_declaration
+ for C++. Keep them in sync. */
+static void
+c_parser_objc_at_property_declaration (c_parser *parser)
+{
+ /* The following variables hold the attributes of the properties as
+ parsed. They are 'false' or 'NULL_TREE' if the attribute was not
+ seen. When we see an attribute, we set them to 'true' (if they
+ are boolean properties) or to the identifier (if they have an
+ argument, ie, for getter and setter). Note that here we only
+ parse the list of attributes, check the syntax and accumulate the
+ attributes that we find. objc_add_property_declaration() will
+ then process the information. */
+ bool property_assign = false;
+ bool property_copy = false;
+ tree property_getter_ident = NULL_TREE;
+ bool property_nonatomic = false;
+ bool property_readonly = false;
+ bool property_readwrite = false;
+ bool property_retain = false;
+ tree property_setter_ident = NULL_TREE;
+
+ /* 'properties' is the list of properties that we read. Usually a
+ single one, but maybe more (eg, in "@property int a, b, c;" there
+ are three). */
+ tree properties;
+ location_t loc;
+
+ loc = c_parser_peek_token (parser)->location;
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_PROPERTY));
+
+ c_parser_consume_token (parser); /* Eat '@property'. */
+
+ /* Parse the optional attribute list... */
+ if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
+ {
+ /* Eat the '(' */
+ c_parser_consume_token (parser);
+
+ /* Property attribute keywords are valid now. */
+ parser->objc_property_attr_context = true;
+
+ while (true)
+ {
+ bool syntax_error = false;
+ c_token *token = c_parser_peek_token (parser);
+ enum rid keyword;
+
+ if (token->type != CPP_KEYWORD)
+ {
+ if (token->type == CPP_CLOSE_PAREN)
+ c_parser_error (parser, "expected identifier");
+ else
+ {
+ c_parser_consume_token (parser);
+ c_parser_error (parser, "unknown property attribute");
+ }
+ break;
+ }
+ keyword = token->keyword;
+ c_parser_consume_token (parser);
+ switch (keyword)
+ {
+ case RID_ASSIGN: property_assign = true; break;
+ case RID_COPY: property_copy = true; break;
+ case RID_NONATOMIC: property_nonatomic = true; break;
+ case RID_READONLY: property_readonly = true; break;
+ case RID_READWRITE: property_readwrite = true; break;
+ case RID_RETAIN: property_retain = true; break;
+
+ case RID_GETTER:
+ case RID_SETTER:
+ if (c_parser_next_token_is_not (parser, CPP_EQ))
+ {
+ if (keyword == RID_GETTER)
+ c_parser_error (parser,
+ "missing %<=%> (after %<getter%> attribute)");
+ else
+ c_parser_error (parser,
+ "missing %<=%> (after %<setter%> attribute)");
+ syntax_error = true;
+ break;
+ }
+ c_parser_consume_token (parser); /* eat the = */
+ if (c_parser_next_token_is_not (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected identifier");
+ syntax_error = true;
+ break;
+ }
+ if (keyword == RID_SETTER)
+ {
+ if (property_setter_ident != NULL_TREE)
+ c_parser_error (parser, "the %<setter%> attribute may only be specified once");
+ else
+ property_setter_ident = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ if (c_parser_next_token_is_not (parser, CPP_COLON))
+ c_parser_error (parser, "setter name must terminate with %<:%>");
+ else
+ c_parser_consume_token (parser);
+ }
+ else
+ {
+ if (property_getter_ident != NULL_TREE)
+ c_parser_error (parser, "the %<getter%> attribute may only be specified once");
+ else
+ property_getter_ident = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ }
+ break;
+ default:
+ c_parser_error (parser, "unknown property attribute");
+ syntax_error = true;
+ break;
+ }
+
+ if (syntax_error)
+ break;
+
+ if (c_parser_next_token_is (parser, CPP_COMMA))
+ c_parser_consume_token (parser);
+ else
+ break;
+ }
+ parser->objc_property_attr_context = false;
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+ }
+ /* ... and the property declaration(s). */
+ properties = c_parser_struct_declaration (parser);
+
+ if (properties == error_mark_node)
+ {
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+ parser->error = false;
+ return;
+ }
+
+ if (properties == NULL_TREE)
+ c_parser_error (parser, "expected identifier");
+ else
+ {
+ /* Comma-separated properties are chained together in
+ reverse order; add them one by one. */
+ properties = nreverse (properties);
+
+ for (; properties; properties = TREE_CHAIN (properties))
+ objc_add_property_declaration (loc, copy_node (properties),
+ property_readonly, property_readwrite,
+ property_assign, property_retain,
+ property_copy, property_nonatomic,
+ property_getter_ident, property_setter_ident);
+ }
+
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ parser->error = false;
+}
+
+/* Parse an Objective-C @synthesize declaration. The syntax is:
+
+ objc-synthesize-declaration:
+ @synthesize objc-synthesize-identifier-list ;
+
+ objc-synthesize-identifier-list:
+ objc-synthesize-identifier
+ objc-synthesize-identifier-list, objc-synthesize-identifier
+
+ objc-synthesize-identifier
+ identifier
+ identifier = identifier
+
+ For example:
+ @synthesize MyProperty;
+ @synthesize OneProperty, AnotherProperty=MyIvar, YetAnotherProperty;
+
+ PS: This function is identical to cp_parser_objc_at_synthesize_declaration
+ for C++. Keep them in sync.
+*/
+static void
+c_parser_objc_at_synthesize_declaration (c_parser *parser)
+{
+ tree list = NULL_TREE;
+ location_t loc;
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_SYNTHESIZE));
+ loc = c_parser_peek_token (parser)->location;
+
+ c_parser_consume_token (parser);
+ while (true)
+ {
+ tree property, ivar;
+ if (c_parser_next_token_is_not (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected identifier");
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+ /* Once we find the semicolon, we can resume normal parsing.
+ We have to reset parser->error manually because
+ c_parser_skip_until_found() won't reset it for us if the
+ next token is precisely a semicolon. */
+ parser->error = false;
+ return;
+ }
+ property = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ if (c_parser_next_token_is (parser, CPP_EQ))
+ {
+ c_parser_consume_token (parser);
+ if (c_parser_next_token_is_not (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected identifier");
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+ parser->error = false;
+ return;
+ }
+ ivar = c_parser_peek_token (parser)->value;
+ c_parser_consume_token (parser);
+ }
+ else
+ ivar = NULL_TREE;
+ list = chainon (list, build_tree_list (ivar, property));
+ if (c_parser_next_token_is (parser, CPP_COMMA))
+ c_parser_consume_token (parser);
+ else
+ break;
+ }
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ objc_add_synthesize_declaration (loc, list);
+}
+
+/* Parse an Objective-C @dynamic declaration. The syntax is:
+
+ objc-dynamic-declaration:
+ @dynamic identifier-list ;
+
+ For example:
+ @dynamic MyProperty;
+ @dynamic MyProperty, AnotherProperty;
+
+ PS: This function is identical to cp_parser_objc_at_dynamic_declaration
+ for C++. Keep them in sync.
+*/
+static void
+c_parser_objc_at_dynamic_declaration (c_parser *parser)
+{
+ tree list = NULL_TREE;
+ location_t loc;
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_AT_DYNAMIC));
+ loc = c_parser_peek_token (parser)->location;
+
+ c_parser_consume_token (parser);
+ while (true)
+ {
+ tree property;
+ if (c_parser_next_token_is_not (parser, CPP_NAME))
+ {
+ c_parser_error (parser, "expected identifier");
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, NULL);
+ parser->error = false;
+ return;
+ }
+ property = c_parser_peek_token (parser)->value;
+ list = chainon (list, build_tree_list (NULL_TREE, property));
+ c_parser_consume_token (parser);
+ if (c_parser_next_token_is (parser, CPP_COMMA))
+ c_parser_consume_token (parser);
+ else
+ break;
+ }
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ objc_add_dynamic_declaration (loc, list);
+}
+
+\f
+/* Handle pragmas. Some OpenMP pragmas are associated with, and therefore
+ should be considered, statements. ALLOW_STMT is true if we're within
+ the context of a function and such pragmas are to be allowed. Returns
+ true if we actually parsed such a pragma. */
+
+static bool
+c_parser_pragma (c_parser *parser, enum pragma_context context)
+{
+ unsigned int id;
+
+ id = c_parser_peek_token (parser)->pragma_kind;
+ gcc_assert (id != PRAGMA_NONE);
+
+ switch (id)
+ {
+ case PRAGMA_OMP_BARRIER:
+ if (context != pragma_compound)
+ {
+ if (context == pragma_stmt)
+ c_parser_error (parser, "%<#pragma omp barrier%> may only be "
+ "used in compound statements");
goto bad_stmt;
}
c_parser_omp_barrier (parser);
c_parser_omp_flush (parser);
return false;
+ case PRAGMA_OMP_TASKWAIT:
+ if (context != pragma_compound)
+ {
+ if (context == pragma_stmt)
+ c_parser_error (parser, "%<#pragma omp taskwait%> may only be "
+ "used in compound statements");
+ goto bad_stmt;
+ }
+ c_parser_omp_taskwait (parser);
+ return false;
+
+ case PRAGMA_OMP_TASKYIELD:
+ if (context != pragma_compound)
+ {
+ if (context == pragma_stmt)
+ c_parser_error (parser, "%<#pragma omp taskyield%> may only be "
+ "used in compound statements");
+ goto bad_stmt;
+ }
+ c_parser_omp_taskyield (parser);
+ return false;
+
case PRAGMA_OMP_THREADPRIVATE:
c_parser_omp_threadprivate (parser);
return false;
case PRAGMA_OMP_SECTION:
- error ("%H%<#pragma omp section%> may only be used in "
- "%<#pragma omp sections%> construct",
- &c_parser_peek_token (parser)->location);
+ error_at (c_parser_peek_token (parser)->location,
+ "%<#pragma omp section%> may only be used in "
+ "%<#pragma omp sections%> construct");
c_parser_skip_until_found (parser, CPP_PRAGMA_EOL, NULL);
return false;
c_parser_consume_pragma (parser);
c_invoke_pragma_handler (id);
- /* Skip to EOL, but suppress any error message. Those will have been
+ /* Skip to EOL, but suppress any error message. Those will have been
generated by the handler routine through calling error, as opposed
to calling c_parser_error. */
parser->error = true;
switch (p[0])
{
case 'c':
- if (!strcmp ("copyin", p))
+ if (!strcmp ("collapse", p))
+ result = PRAGMA_OMP_CLAUSE_COLLAPSE;
+ else if (!strcmp ("copyin", p))
result = PRAGMA_OMP_CLAUSE_COPYIN;
else if (!strcmp ("copyprivate", p))
result = PRAGMA_OMP_CLAUSE_COPYPRIVATE;
break;
case 'f':
- if (!strcmp ("firstprivate", p))
+ if (!strcmp ("final", p))
+ result = PRAGMA_OMP_CLAUSE_FINAL;
+ else if (!strcmp ("firstprivate", p))
result = PRAGMA_OMP_CLAUSE_FIRSTPRIVATE;
break;
case 'l':
if (!strcmp ("lastprivate", p))
result = PRAGMA_OMP_CLAUSE_LASTPRIVATE;
break;
+ case 'm':
+ if (!strcmp ("mergeable", p))
+ result = PRAGMA_OMP_CLAUSE_MERGEABLE;
+ break;
case 'n':
if (!strcmp ("nowait", p))
result = PRAGMA_OMP_CLAUSE_NOWAIT;
else if (!strcmp ("shared", p))
result = PRAGMA_OMP_CLAUSE_SHARED;
break;
+ case 'u':
+ if (!strcmp ("untied", p))
+ result = PRAGMA_OMP_CLAUSE_UNTIED;
+ break;
}
}
/* Validate that a clause of the given type does not already exist. */
static void
-check_no_duplicate_clause (tree clauses, enum tree_code code, const char *name)
+check_no_duplicate_clause (tree clauses, enum omp_clause_code code,
+ const char *name)
{
tree c;
for (c = clauses; c ; c = OMP_CLAUSE_CHAIN (c))
if (OMP_CLAUSE_CODE (c) == code)
{
- error ("too many %qs clauses", name);
+ location_t loc = OMP_CLAUSE_LOCATION (c);
+ error_at (loc, "too many %qs clauses", name);
break;
}
}
identifier
variable-list , identifier
- If KIND is nonzero, create the appropriate node and install the decl
- in OMP_CLAUSE_DECL and add the node to the head of the list.
+ If KIND is nonzero, create the appropriate node and install the
+ decl in OMP_CLAUSE_DECL and add the node to the head of the list.
+ If KIND is nonzero, CLAUSE_LOC is the location of the clause.
If KIND is zero, create a TREE_LIST with the decl in TREE_PURPOSE;
return the list created. */
static tree
-c_parser_omp_variable_list (c_parser *parser, enum omp_clause_code kind,
+c_parser_omp_variable_list (c_parser *parser,
+ location_t clause_loc,
+ enum omp_clause_code kind,
tree list)
{
if (c_parser_next_token_is_not (parser, CPP_NAME)
tree t = lookup_name (c_parser_peek_token (parser)->value);
if (t == NULL_TREE)
- undeclared_variable (c_parser_peek_token (parser)->value,
- c_parser_peek_token (parser)->location);
+ undeclared_variable (c_parser_peek_token (parser)->location,
+ c_parser_peek_token (parser)->value);
else if (t == error_mark_node)
;
else if (kind != 0)
{
- tree u = build_omp_clause (kind);
+ tree u = build_omp_clause (clause_loc, kind);
OMP_CLAUSE_DECL (u) = t;
OMP_CLAUSE_CHAIN (u) = list;
list = u;
common case for omp clauses. */
static tree
-c_parser_omp_var_list_parens (c_parser *parser, enum tree_code kind, tree list)
+c_parser_omp_var_list_parens (c_parser *parser, enum omp_clause_code kind,
+ tree list)
{
+ /* The clauses location. */
+ location_t loc = c_parser_peek_token (parser)->location;
+
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
- list = c_parser_omp_variable_list (parser, kind, list);
+ list = c_parser_omp_variable_list (parser, loc, kind, list);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
}
return list;
}
+/* OpenMP 3.0:
+ collapse ( constant-expression ) */
+
+static tree
+c_parser_omp_clause_collapse (c_parser *parser, tree list)
+{
+ tree c, num = error_mark_node;
+ HOST_WIDE_INT n;
+ location_t loc;
+
+ check_no_duplicate_clause (list, OMP_CLAUSE_COLLAPSE, "collapse");
+
+ loc = c_parser_peek_token (parser)->location;
+ if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
+ {
+ num = c_parser_expr_no_commas (parser, NULL).value;
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+ }
+ if (num == error_mark_node)
+ return list;
+ if (!INTEGRAL_TYPE_P (TREE_TYPE (num))
+ || !host_integerp (num, 0)
+ || (n = tree_low_cst (num, 0)) <= 0
+ || (int) n != n)
+ {
+ error_at (loc,
+ "collapse argument needs positive constant integer expression");
+ return list;
+ }
+ c = build_omp_clause (loc, OMP_CLAUSE_COLLAPSE);
+ OMP_CLAUSE_COLLAPSE_EXPR (c) = num;
+ OMP_CLAUSE_CHAIN (c) = list;
+ return c;
+}
+
/* OpenMP 2.5:
copyin ( variable-list ) */
c_parser_omp_clause_default (c_parser *parser, tree list)
{
enum omp_clause_default_kind kind = OMP_CLAUSE_DEFAULT_UNSPECIFIED;
+ location_t loc = c_parser_peek_token (parser)->location;
tree c;
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
return list;
check_no_duplicate_clause (list, OMP_CLAUSE_DEFAULT, "default");
- c = build_omp_clause (OMP_CLAUSE_DEFAULT);
+ c = build_omp_clause (loc, OMP_CLAUSE_DEFAULT);
OMP_CLAUSE_CHAIN (c) = list;
OMP_CLAUSE_DEFAULT_KIND (c) = kind;
return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_FIRSTPRIVATE, list);
}
+/* OpenMP 3.1:
+ final ( expression ) */
+
+static tree
+c_parser_omp_clause_final (c_parser *parser, tree list)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
+ {
+ tree t = c_parser_paren_condition (parser);
+ tree c;
+
+ check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final");
+
+ c = build_omp_clause (loc, OMP_CLAUSE_FINAL);
+ OMP_CLAUSE_FINAL_EXPR (c) = t;
+ OMP_CLAUSE_CHAIN (c) = list;
+ list = c;
+ }
+ else
+ c_parser_error (parser, "expected %<(%>");
+
+ return list;
+}
+
/* OpenMP 2.5:
if ( expression ) */
static tree
c_parser_omp_clause_if (c_parser *parser, tree list)
{
+ location_t loc = c_parser_peek_token (parser)->location;
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
{
tree t = c_parser_paren_condition (parser);
check_no_duplicate_clause (list, OMP_CLAUSE_IF, "if");
- c = build_omp_clause (OMP_CLAUSE_IF);
+ c = build_omp_clause (loc, OMP_CLAUSE_IF);
OMP_CLAUSE_IF_EXPR (c) = t;
OMP_CLAUSE_CHAIN (c) = list;
list = c;
return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_LASTPRIVATE, list);
}
+/* OpenMP 3.1:
+ mergeable */
+
+static tree
+c_parser_omp_clause_mergeable (c_parser *parser ATTRIBUTE_UNUSED, tree list)
+{
+ tree c;
+
+ /* FIXME: Should we allow duplicates? */
+ check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable");
+
+ c = build_omp_clause (c_parser_peek_token (parser)->location,
+ OMP_CLAUSE_MERGEABLE);
+ OMP_CLAUSE_CHAIN (c) = list;
+
+ return c;
+}
+
/* OpenMP 2.5:
nowait */
c_parser_omp_clause_nowait (c_parser *parser ATTRIBUTE_UNUSED, tree list)
{
tree c;
+ location_t loc = c_parser_peek_token (parser)->location;
check_no_duplicate_clause (list, OMP_CLAUSE_NOWAIT, "nowait");
- c = build_omp_clause (OMP_CLAUSE_NOWAIT);
+ c = build_omp_clause (loc, OMP_CLAUSE_NOWAIT);
OMP_CLAUSE_CHAIN (c) = list;
return c;
}
static tree
c_parser_omp_clause_num_threads (c_parser *parser, tree list)
{
+ location_t num_threads_loc = c_parser_peek_token (parser)->location;
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
location_t expr_loc = c_parser_peek_token (parser)->location;
tree c, t = c_parser_expression (parser).value;
+ mark_exp_read (t);
+ t = c_fully_fold (t, false, NULL);
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
}
/* Attempt to statically determine when the number isn't positive. */
- c = fold_build2 (LE_EXPR, boolean_type_node, t,
+ c = fold_build2_loc (expr_loc, LE_EXPR, boolean_type_node, t,
build_int_cst (TREE_TYPE (t), 0));
+ if (CAN_HAVE_LOCATION_P (c))
+ SET_EXPR_LOCATION (c, expr_loc);
if (c == boolean_true_node)
{
- warning (0, "%H%<num_threads%> value must be positive", &expr_loc);
+ warning_at (expr_loc, 0,
+ "%<num_threads%> value must be positive");
t = integer_one_node;
}
check_no_duplicate_clause (list, OMP_CLAUSE_NUM_THREADS, "num_threads");
- c = build_omp_clause (OMP_CLAUSE_NUM_THREADS);
+ c = build_omp_clause (num_threads_loc, OMP_CLAUSE_NUM_THREADS);
OMP_CLAUSE_NUM_THREADS_EXPR (c) = t;
OMP_CLAUSE_CHAIN (c) = list;
list = c;
ordered */
static tree
-c_parser_omp_clause_ordered (c_parser *parser ATTRIBUTE_UNUSED, tree list)
+c_parser_omp_clause_ordered (c_parser *parser, tree list)
{
tree c;
check_no_duplicate_clause (list, OMP_CLAUSE_ORDERED, "ordered");
- c = build_omp_clause (OMP_CLAUSE_ORDERED);
+ c = build_omp_clause (c_parser_peek_token (parser)->location,
+ OMP_CLAUSE_ORDERED);
OMP_CLAUSE_CHAIN (c) = list;
+
return c;
}
reduction ( reduction-operator : variable-list )
reduction-operator:
- One of: + * - & ^ | && || */
+ One of: + * - & ^ | && ||
+
+ OpenMP 3.1:
+
+ reduction-operator:
+ One of: + * - & ^ | && || max min */
static tree
c_parser_omp_clause_reduction (c_parser *parser, tree list)
{
+ location_t clause_loc = c_parser_peek_token (parser)->location;
if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
{
enum tree_code code;
case CPP_OR_OR:
code = TRUTH_ORIF_EXPR;
break;
+ case CPP_NAME:
+ {
+ const char *p
+ = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
+ if (strcmp (p, "min") == 0)
+ {
+ code = MIN_EXPR;
+ break;
+ }
+ if (strcmp (p, "max") == 0)
+ {
+ code = MAX_EXPR;
+ break;
+ }
+ }
+ /* FALLTHRU */
default:
c_parser_error (parser,
"expected %<+%>, %<*%>, %<-%>, %<&%>, "
- "%<^%>, %<|%>, %<&&%>, or %<||%>");
+ "%<^%>, %<|%>, %<&&%>, %<||%>, %<min%> or %<max%>");
c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, 0);
return list;
}
{
tree nl, c;
- nl = c_parser_omp_variable_list (parser, OMP_CLAUSE_REDUCTION, list);
+ nl = c_parser_omp_variable_list (parser, clause_loc,
+ OMP_CLAUSE_REDUCTION, list);
for (c = nl; c != list; c = OMP_CLAUSE_CHAIN (c))
OMP_CLAUSE_REDUCTION_CODE (c) = code;
schedule ( schedule-kind , expression )
schedule-kind:
- static | dynamic | guided | runtime
+ static | dynamic | guided | runtime | auto
*/
static tree
c_parser_omp_clause_schedule (c_parser *parser, tree list)
{
tree c, t;
+ location_t loc = c_parser_peek_token (parser)->location;
if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
return list;
- c = build_omp_clause (OMP_CLAUSE_SCHEDULE);
+ c = build_omp_clause (loc, OMP_CLAUSE_SCHEDULE);
if (c_parser_next_token_is (parser, CPP_NAME))
{
}
else if (c_parser_next_token_is_keyword (parser, RID_STATIC))
OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_STATIC;
+ else if (c_parser_next_token_is_keyword (parser, RID_AUTO))
+ OMP_CLAUSE_SCHEDULE_KIND (c) = OMP_CLAUSE_SCHEDULE_AUTO;
else
goto invalid_kind;
here = c_parser_peek_token (parser)->location;
t = c_parser_expr_no_commas (parser, NULL).value;
+ mark_exp_read (t);
+ t = c_fully_fold (t, false, NULL);
if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_RUNTIME)
- error ("%Hschedule %<runtime%> does not take "
- "a %<chunk_size%> parameter", &here);
+ error_at (here, "schedule %<runtime%> does not take "
+ "a %<chunk_size%> parameter");
+ else if (OMP_CLAUSE_SCHEDULE_KIND (c) == OMP_CLAUSE_SCHEDULE_AUTO)
+ error_at (here,
+ "schedule %<auto%> does not take "
+ "a %<chunk_size%> parameter");
else if (TREE_CODE (TREE_TYPE (t)) == INTEGER_TYPE)
OMP_CLAUSE_SCHEDULE_CHUNK_EXPR (c) = t;
else
return c_parser_omp_var_list_parens (parser, OMP_CLAUSE_SHARED, list);
}
+/* OpenMP 3.0:
+ untied */
+
+static tree
+c_parser_omp_clause_untied (c_parser *parser ATTRIBUTE_UNUSED, tree list)
+{
+ tree c;
+
+ /* FIXME: Should we allow duplicates? */
+ check_no_duplicate_clause (list, OMP_CLAUSE_UNTIED, "untied");
+
+ c = build_omp_clause (c_parser_peek_token (parser)->location,
+ OMP_CLAUSE_UNTIED);
+ OMP_CLAUSE_CHAIN (c) = list;
+
+ return c;
+}
+
/* Parse all OpenMP clauses. The set clauses allowed by the directive
is a bitmask in MASK. Return the list of clauses found; the result
of clause default goes in *pdefault. */
switch (c_kind)
{
+ case PRAGMA_OMP_CLAUSE_COLLAPSE:
+ clauses = c_parser_omp_clause_collapse (parser, clauses);
+ c_name = "collapse";
+ break;
case PRAGMA_OMP_CLAUSE_COPYIN:
clauses = c_parser_omp_clause_copyin (parser, clauses);
c_name = "copyin";
clauses = c_parser_omp_clause_firstprivate (parser, clauses);
c_name = "firstprivate";
break;
+ case PRAGMA_OMP_CLAUSE_FINAL:
+ clauses = c_parser_omp_clause_final (parser, clauses);
+ c_name = "final";
+ break;
case PRAGMA_OMP_CLAUSE_IF:
clauses = c_parser_omp_clause_if (parser, clauses);
c_name = "if";
clauses = c_parser_omp_clause_lastprivate (parser, clauses);
c_name = "lastprivate";
break;
+ case PRAGMA_OMP_CLAUSE_MERGEABLE:
+ clauses = c_parser_omp_clause_mergeable (parser, clauses);
+ c_name = "mergeable";
+ break;
case PRAGMA_OMP_CLAUSE_NOWAIT:
clauses = c_parser_omp_clause_nowait (parser, clauses);
c_name = "nowait";
clauses = c_parser_omp_clause_shared (parser, clauses);
c_name = "shared";
break;
+ case PRAGMA_OMP_CLAUSE_UNTIED:
+ clauses = c_parser_omp_clause_untied (parser, clauses);
+ c_name = "untied";
+ break;
default:
c_parser_error (parser, "expected %<#pragma omp%> clause");
goto saw_error;
/* Remove the invalid clause(s) from the list to avoid
confusing the rest of the compiler. */
clauses = prev;
- error ("%H%qs is not valid for %qs", &here, c_name, where);
+ error_at (here, "%qs is not valid for %qs", c_name, where);
}
}
binop:
+, *, -, /, &, ^, |, <<, >>
- where x is an lvalue expression with scalar type. */
+ where x is an lvalue expression with scalar type.
+
+ OpenMP 3.1:
+ # pragma omp atomic new-line
+ update-stmt
+
+ # pragma omp atomic read new-line
+ read-stmt
+
+ # pragma omp atomic write new-line
+ write-stmt
+
+ # pragma omp atomic update new-line
+ update-stmt
+
+ # pragma omp atomic capture new-line
+ capture-stmt
+
+ # pragma omp atomic capture new-line
+ capture-block
+
+ read-stmt:
+ v = x
+ write-stmt:
+ x = expr
+ update-stmt:
+ expression-stmt | x = x binop expr
+ capture-stmt:
+ v = x binop= expr | v = x++ | v = ++x | v = x-- | v = --x
+ capture-block:
+ { v = x; update-stmt; } | { update-stmt; v = x; }
+
+ where x and v are lvalue expressions with scalar type.
+
+ LOC is the location of the #pragma token. */
static void
-c_parser_omp_atomic (c_parser *parser)
+c_parser_omp_atomic (location_t loc, c_parser *parser)
{
- tree lhs, rhs;
- tree stmt;
- enum tree_code code;
+ tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE;
+ tree lhs1 = NULL_TREE, rhs1 = NULL_TREE;
+ tree stmt, orig_lhs;
+ enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR;
struct c_expr rhs_expr;
+ bool structured_block = false;
+
+ if (c_parser_next_token_is (parser, CPP_NAME))
+ {
+ const char *p = IDENTIFIER_POINTER (c_parser_peek_token (parser)->value);
+ if (!strcmp (p, "read"))
+ code = OMP_ATOMIC_READ;
+ else if (!strcmp (p, "write"))
+ code = NOP_EXPR;
+ else if (!strcmp (p, "update"))
+ code = OMP_ATOMIC;
+ else if (!strcmp (p, "capture"))
+ code = OMP_ATOMIC_CAPTURE_NEW;
+ else
+ p = NULL;
+ if (p)
+ c_parser_consume_token (parser);
+ }
c_parser_skip_to_pragma_eol (parser);
+ switch (code)
+ {
+ case OMP_ATOMIC_READ:
+ case NOP_EXPR: /* atomic write */
+ v = c_parser_unary_expression (parser).value;
+ v = c_fully_fold (v, false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ loc = c_parser_peek_token (parser)->location;
+ if (!c_parser_require (parser, CPP_EQ, "expected %<=%>"))
+ goto saw_error;
+ if (code == NOP_EXPR)
+ lhs = c_parser_expression (parser).value;
+ else
+ lhs = c_parser_unary_expression (parser).value;
+ lhs = c_fully_fold (lhs, false, NULL);
+ if (lhs == error_mark_node)
+ goto saw_error;
+ if (code == NOP_EXPR)
+ {
+ /* atomic write is represented by OMP_ATOMIC with NOP_EXPR
+ opcode. */
+ code = OMP_ATOMIC;
+ rhs = lhs;
+ lhs = v;
+ v = NULL_TREE;
+ }
+ goto done;
+ case OMP_ATOMIC_CAPTURE_NEW:
+ if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
+ {
+ c_parser_consume_token (parser);
+ structured_block = true;
+ }
+ else
+ {
+ v = c_parser_unary_expression (parser).value;
+ v = c_fully_fold (v, false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ if (!c_parser_require (parser, CPP_EQ, "expected %<=%>"))
+ goto saw_error;
+ }
+ break;
+ default:
+ break;
+ }
+
+ /* For structured_block case we don't know yet whether
+ old or new x should be captured. */
+restart:
lhs = c_parser_unary_expression (parser).value;
+ lhs = c_fully_fold (lhs, false, NULL);
+ orig_lhs = lhs;
switch (TREE_CODE (lhs))
{
case ERROR_MARK:
saw_error:
c_parser_skip_to_end_of_block_or_statement (parser);
+ if (structured_block)
+ {
+ if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
+ c_parser_consume_token (parser);
+ else if (code == OMP_ATOMIC_CAPTURE_NEW)
+ {
+ c_parser_skip_to_end_of_block_or_statement (parser);
+ if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
+ c_parser_consume_token (parser);
+ }
+ }
return;
- case PREINCREMENT_EXPR:
case POSTINCREMENT_EXPR:
+ if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block)
+ code = OMP_ATOMIC_CAPTURE_OLD;
+ /* FALLTHROUGH */
+ case PREINCREMENT_EXPR:
lhs = TREE_OPERAND (lhs, 0);
- code = PLUS_EXPR;
+ opcode = PLUS_EXPR;
rhs = integer_one_node;
break;
- case PREDECREMENT_EXPR:
case POSTDECREMENT_EXPR:
+ if (code == OMP_ATOMIC_CAPTURE_NEW && !structured_block)
+ code = OMP_ATOMIC_CAPTURE_OLD;
+ /* FALLTHROUGH */
+ case PREDECREMENT_EXPR:
lhs = TREE_OPERAND (lhs, 0);
- code = MINUS_EXPR;
+ opcode = MINUS_EXPR;
rhs = integer_one_node;
break;
+ case COMPOUND_EXPR:
+ if (TREE_CODE (TREE_OPERAND (lhs, 0)) == SAVE_EXPR
+ && TREE_CODE (TREE_OPERAND (lhs, 1)) == COMPOUND_EXPR
+ && TREE_CODE (TREE_OPERAND (TREE_OPERAND (lhs, 1), 0)) == MODIFY_EXPR
+ && TREE_OPERAND (TREE_OPERAND (lhs, 1), 1) == TREE_OPERAND (lhs, 0)
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (TREE_OPERAND
+ (TREE_OPERAND (lhs, 1), 0), 0)))
+ == BOOLEAN_TYPE)
+ /* Undo effects of boolean_increment for post {in,de}crement. */
+ lhs = TREE_OPERAND (TREE_OPERAND (lhs, 1), 0);
+ /* FALLTHRU */
+ case MODIFY_EXPR:
+ if (TREE_CODE (lhs) == MODIFY_EXPR
+ && TREE_CODE (TREE_TYPE (TREE_OPERAND (lhs, 0))) == BOOLEAN_TYPE)
+ {
+ /* Undo effects of boolean_increment. */
+ if (integer_onep (TREE_OPERAND (lhs, 1)))
+ {
+ /* This is pre or post increment. */
+ rhs = TREE_OPERAND (lhs, 1);
+ lhs = TREE_OPERAND (lhs, 0);
+ opcode = NOP_EXPR;
+ if (code == OMP_ATOMIC_CAPTURE_NEW
+ && !structured_block
+ && TREE_CODE (orig_lhs) == COMPOUND_EXPR)
+ code = OMP_ATOMIC_CAPTURE_OLD;
+ break;
+ }
+ if (TREE_CODE (TREE_OPERAND (lhs, 1)) == TRUTH_NOT_EXPR
+ && TREE_OPERAND (lhs, 0)
+ == TREE_OPERAND (TREE_OPERAND (lhs, 1), 0))
+ {
+ /* This is pre or post decrement. */
+ rhs = TREE_OPERAND (lhs, 1);
+ lhs = TREE_OPERAND (lhs, 0);
+ opcode = NOP_EXPR;
+ if (code == OMP_ATOMIC_CAPTURE_NEW
+ && !structured_block
+ && TREE_CODE (orig_lhs) == COMPOUND_EXPR)
+ code = OMP_ATOMIC_CAPTURE_OLD;
+ break;
+ }
+ }
+ /* FALLTHRU */
default:
switch (c_parser_peek_token (parser)->type)
{
case CPP_MULT_EQ:
- code = MULT_EXPR;
+ opcode = MULT_EXPR;
break;
case CPP_DIV_EQ:
- code = TRUNC_DIV_EXPR;
+ opcode = TRUNC_DIV_EXPR;
break;
case CPP_PLUS_EQ:
- code = PLUS_EXPR;
+ opcode = PLUS_EXPR;
break;
case CPP_MINUS_EQ:
- code = MINUS_EXPR;
+ opcode = MINUS_EXPR;
break;
case CPP_LSHIFT_EQ:
- code = LSHIFT_EXPR;
+ opcode = LSHIFT_EXPR;
break;
case CPP_RSHIFT_EQ:
- code = RSHIFT_EXPR;
+ opcode = RSHIFT_EXPR;
break;
case CPP_AND_EQ:
- code = BIT_AND_EXPR;
+ opcode = BIT_AND_EXPR;
break;
case CPP_OR_EQ:
- code = BIT_IOR_EXPR;
+ opcode = BIT_IOR_EXPR;
break;
case CPP_XOR_EQ:
- code = BIT_XOR_EXPR;
+ opcode = BIT_XOR_EXPR;
break;
+ case CPP_EQ:
+ if (structured_block || code == OMP_ATOMIC)
+ {
+ location_t aloc = c_parser_peek_token (parser)->location;
+ location_t rhs_loc;
+ enum c_parser_prec oprec = PREC_NONE;
+
+ c_parser_consume_token (parser);
+ rhs1 = c_parser_unary_expression (parser).value;
+ rhs1 = c_fully_fold (rhs1, false, NULL);
+ if (rhs1 == error_mark_node)
+ goto saw_error;
+ switch (c_parser_peek_token (parser)->type)
+ {
+ case CPP_SEMICOLON:
+ if (code == OMP_ATOMIC_CAPTURE_NEW)
+ {
+ code = OMP_ATOMIC_CAPTURE_OLD;
+ v = lhs;
+ lhs = NULL_TREE;
+ lhs1 = rhs1;
+ rhs1 = NULL_TREE;
+ c_parser_consume_token (parser);
+ goto restart;
+ }
+ c_parser_error (parser,
+ "invalid form of %<#pragma omp atomic%>");
+ goto saw_error;
+ case CPP_MULT:
+ opcode = MULT_EXPR;
+ oprec = PREC_MULT;
+ break;
+ case CPP_DIV:
+ opcode = TRUNC_DIV_EXPR;
+ oprec = PREC_MULT;
+ break;
+ case CPP_PLUS:
+ opcode = PLUS_EXPR;
+ oprec = PREC_ADD;
+ break;
+ case CPP_MINUS:
+ opcode = MINUS_EXPR;
+ oprec = PREC_ADD;
+ break;
+ case CPP_LSHIFT:
+ opcode = LSHIFT_EXPR;
+ oprec = PREC_SHIFT;
+ break;
+ case CPP_RSHIFT:
+ opcode = RSHIFT_EXPR;
+ oprec = PREC_SHIFT;
+ break;
+ case CPP_AND:
+ opcode = BIT_AND_EXPR;
+ oprec = PREC_BITAND;
+ break;
+ case CPP_OR:
+ opcode = BIT_IOR_EXPR;
+ oprec = PREC_BITOR;
+ break;
+ case CPP_XOR:
+ opcode = BIT_XOR_EXPR;
+ oprec = PREC_BITXOR;
+ break;
+ default:
+ c_parser_error (parser,
+ "invalid operator for %<#pragma omp atomic%>");
+ goto saw_error;
+ }
+ loc = aloc;
+ c_parser_consume_token (parser);
+ rhs_loc = c_parser_peek_token (parser)->location;
+ if (commutative_tree_code (opcode))
+ oprec = (enum c_parser_prec) (oprec - 1);
+ rhs_expr = c_parser_binary_expression (parser, NULL, oprec);
+ rhs_expr = default_function_array_read_conversion (rhs_loc,
+ rhs_expr);
+ rhs = rhs_expr.value;
+ rhs = c_fully_fold (rhs, false, NULL);
+ goto stmt_done;
+ }
+ /* FALLTHROUGH */
default:
c_parser_error (parser,
"invalid operator for %<#pragma omp atomic%>");
goto saw_error;
}
+ /* Arrange to pass the location of the assignment operator to
+ c_finish_omp_atomic. */
+ loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
- rhs_expr = c_parser_expression (parser);
- rhs_expr = default_function_array_conversion (rhs_expr);
+ {
+ location_t rhs_loc = c_parser_peek_token (parser)->location;
+ rhs_expr = c_parser_expression (parser);
+ rhs_expr = default_function_array_read_conversion (rhs_loc, rhs_expr);
+ }
rhs = rhs_expr.value;
+ rhs = c_fully_fold (rhs, false, NULL);
break;
}
- stmt = c_finish_omp_atomic (code, lhs, rhs);
+stmt_done:
+ if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW)
+ {
+ if (!c_parser_require (parser, CPP_SEMICOLON, "expected %<;%>"))
+ goto saw_error;
+ v = c_parser_unary_expression (parser).value;
+ v = c_fully_fold (v, false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ if (!c_parser_require (parser, CPP_EQ, "expected %<=%>"))
+ goto saw_error;
+ lhs1 = c_parser_unary_expression (parser).value;
+ lhs1 = c_fully_fold (lhs1, false, NULL);
+ if (lhs1 == error_mark_node)
+ goto saw_error;
+ }
+ if (structured_block)
+ {
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ c_parser_require (parser, CPP_CLOSE_BRACE, "expected %<}%>");
+ }
+done:
+ stmt = c_finish_omp_atomic (loc, code, opcode, lhs, rhs, v, lhs1, rhs1);
if (stmt != error_mark_node)
add_stmt (stmt);
- c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+
+ if (!structured_block)
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
}
static void
c_parser_omp_barrier (c_parser *parser)
{
+ location_t loc = c_parser_peek_token (parser)->location;
c_parser_consume_pragma (parser);
c_parser_skip_to_pragma_eol (parser);
- c_finish_omp_barrier ();
+ c_finish_omp_barrier (loc);
}
/* OpenMP 2.5:
# pragma omp critical [(name)] new-line
structured-block
-*/
+
+ LOC is the location of the #pragma itself. */
static tree
-c_parser_omp_critical (c_parser *parser)
+c_parser_omp_critical (location_t loc, c_parser *parser)
{
tree stmt, name = NULL;
c_parser_skip_to_pragma_eol (parser);
stmt = c_parser_omp_structured_block (parser);
- return c_finish_omp_critical (stmt, name);
+ return c_finish_omp_critical (loc, stmt, name);
}
/* OpenMP 2.5:
static void
c_parser_omp_flush (c_parser *parser)
{
+ location_t loc = c_parser_peek_token (parser)->location;
c_parser_consume_pragma (parser);
if (c_parser_next_token_is (parser, CPP_OPEN_PAREN))
- c_parser_omp_var_list_parens (parser, 0, NULL);
+ c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL);
else if (c_parser_next_token_is_not (parser, CPP_PRAGMA_EOL))
c_parser_error (parser, "expected %<(%> or end of line");
c_parser_skip_to_pragma_eol (parser);
- c_finish_omp_flush ();
+ c_finish_omp_flush (loc);
}
-/* Parse the restricted form of the for statment allowed by OpenMP.
+/* Parse the restricted form of the for statement allowed by OpenMP.
The real trick here is to determine the loop control variable early
- so that we can push a new decl if necessary to make it private. */
+ so that we can push a new decl if necessary to make it private.
+ LOC is the location of the OMP in "#pragma omp". */
static tree
-c_parser_omp_for_loop (c_parser *parser)
+c_parser_omp_for_loop (location_t loc,
+ c_parser *parser, tree clauses, tree *par_clauses)
{
- tree decl, cond, incr, save_break, save_cont, body, init;
- location_t loc;
+ tree decl, cond, incr, save_break, save_cont, body, init, stmt, cl;
+ tree declv, condv, incrv, initv, ret = NULL;
+ bool fail = false, open_brace_parsed = false;
+ int i, collapse = 1, nbraces = 0;
+ location_t for_loc;
+ VEC(tree,gc) *for_block = make_tree_vector ();
+
+ for (cl = clauses; cl; cl = OMP_CLAUSE_CHAIN (cl))
+ if (OMP_CLAUSE_CODE (cl) == OMP_CLAUSE_COLLAPSE)
+ collapse = tree_low_cst (OMP_CLAUSE_COLLAPSE_EXPR (cl), 0);
+
+ gcc_assert (collapse >= 1);
+
+ declv = make_tree_vec (collapse);
+ initv = make_tree_vec (collapse);
+ condv = make_tree_vec (collapse);
+ incrv = make_tree_vec (collapse);
if (!c_parser_next_token_is_keyword (parser, RID_FOR))
{
c_parser_error (parser, "for statement expected");
return NULL;
}
- loc = c_parser_peek_token (parser)->location;
+ for_loc = c_parser_peek_token (parser)->location;
c_parser_consume_token (parser);
- if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
- return NULL;
-
- /* Parse the initialization declaration or expression. */
- if (c_parser_next_token_starts_declspecs (parser))
+ for (i = 0; i < collapse; i++)
{
- c_parser_declaration_or_fndef (parser, true, true, true, true);
- decl = check_for_loop_decls ();
- if (decl == NULL)
- goto error_init;
- if (DECL_INITIAL (decl) == error_mark_node)
- decl = error_mark_node;
- init = decl;
- }
- else if (c_parser_next_token_is (parser, CPP_NAME)
- && c_parser_peek_2nd_token (parser)->type == CPP_EQ)
- {
- decl = c_parser_postfix_expression (parser).value;
+ int bracecount = 0;
+
+ if (!c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
+ goto pop_scopes;
+
+ /* Parse the initialization declaration or expression. */
+ if (c_parser_next_tokens_start_declaration (parser))
+ {
+ if (i > 0)
+ VEC_safe_push (tree, gc, for_block, c_begin_compound_stmt (true));
+ c_parser_declaration_or_fndef (parser, true, true, true, true, true, NULL);
+ decl = check_for_loop_decls (for_loc, flag_isoc99);
+ if (decl == NULL)
+ goto error_init;
+ if (DECL_INITIAL (decl) == error_mark_node)
+ decl = error_mark_node;
+ init = decl;
+ }
+ else if (c_parser_next_token_is (parser, CPP_NAME)
+ && c_parser_peek_2nd_token (parser)->type == CPP_EQ)
+ {
+ struct c_expr decl_exp;
+ struct c_expr init_exp;
+ location_t init_loc;
+
+ decl_exp = c_parser_postfix_expression (parser);
+ decl = decl_exp.value;
+
+ c_parser_require (parser, CPP_EQ, "expected %<=%>");
+
+ init_loc = c_parser_peek_token (parser)->location;
+ init_exp = c_parser_expr_no_commas (parser, NULL);
+ init_exp = default_function_array_read_conversion (init_loc,
+ init_exp);
+ init = build_modify_expr (init_loc, decl, decl_exp.original_type,
+ NOP_EXPR, init_loc, init_exp.value,
+ init_exp.original_type);
+ init = c_process_expr_stmt (init_loc, init);
- c_parser_require (parser, CPP_EQ, "expected %<=%>");
+ c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ }
+ else
+ {
+ error_init:
+ c_parser_error (parser,
+ "expected iteration declaration or initialization");
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN,
+ "expected %<)%>");
+ fail = true;
+ goto parse_next;
+ }
- init = c_parser_expr_no_commas (parser, NULL).value;
- init = build_modify_expr (decl, NOP_EXPR, init);
- init = c_process_expr_stmt (init);
+ /* Parse the loop condition. */
+ cond = NULL_TREE;
+ if (c_parser_next_token_is_not (parser, CPP_SEMICOLON))
+ {
+ location_t cond_loc = c_parser_peek_token (parser)->location;
+ struct c_expr cond_expr = c_parser_binary_expression (parser, NULL,
+ PREC_NONE);
+ cond = cond_expr.value;
+ cond = c_objc_common_truthvalue_conversion (cond_loc, cond);
+ cond = c_fully_fold (cond, false, NULL);
+ switch (cond_expr.original_code)
+ {
+ case GT_EXPR:
+ case GE_EXPR:
+ case LT_EXPR:
+ case LE_EXPR:
+ break;
+ default:
+ /* Can't be cond = error_mark_node, because we want to preserve
+ the location until c_finish_omp_for. */
+ cond = build1 (NOP_EXPR, boolean_type_node, error_mark_node);
+ break;
+ }
+ protected_set_expr_location (cond, cond_loc);
+ }
c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
- }
- else
- goto error_init;
- /* Parse the loop condition. */
- cond = NULL_TREE;
- if (c_parser_next_token_is_not (parser, CPP_SEMICOLON))
- {
- cond = c_parser_expression_conv (parser).value;
- cond = c_objc_common_truthvalue_conversion (cond);
- if (CAN_HAVE_LOCATION_P (cond))
- SET_EXPR_LOCATION (cond, input_location);
- }
- c_parser_skip_until_found (parser, CPP_SEMICOLON, "expected %<;%>");
+ /* Parse the increment expression. */
+ incr = NULL_TREE;
+ if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN))
+ {
+ location_t incr_loc = c_parser_peek_token (parser)->location;
- /* Parse the increment expression. */
- incr = NULL_TREE;
- if (c_parser_next_token_is_not (parser, CPP_CLOSE_PAREN))
- incr = c_process_expr_stmt (c_parser_expression (parser).value);
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+ incr = c_process_expr_stmt (incr_loc,
+ c_parser_expression (parser).value);
+ }
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
+
+ if (decl == NULL || decl == error_mark_node || init == error_mark_node)
+ fail = true;
+ else
+ {
+ TREE_VEC_ELT (declv, i) = decl;
+ TREE_VEC_ELT (initv, i) = init;
+ TREE_VEC_ELT (condv, i) = cond;
+ TREE_VEC_ELT (incrv, i) = incr;
+ }
+
+ parse_next:
+ if (i == collapse - 1)
+ break;
+
+ /* FIXME: OpenMP 3.0 draft isn't very clear on what exactly is allowed
+ in between the collapsed for loops to be still considered perfectly
+ nested. Hopefully the final version clarifies this.
+ For now handle (multiple) {'s and empty statements. */
+ do
+ {
+ if (c_parser_next_token_is_keyword (parser, RID_FOR))
+ {
+ c_parser_consume_token (parser);
+ break;
+ }
+ else if (c_parser_next_token_is (parser, CPP_OPEN_BRACE))
+ {
+ c_parser_consume_token (parser);
+ bracecount++;
+ }
+ else if (bracecount
+ && c_parser_next_token_is (parser, CPP_SEMICOLON))
+ c_parser_consume_token (parser);
+ else
+ {
+ c_parser_error (parser, "not enough perfectly nested loops");
+ if (bracecount)
+ {
+ open_brace_parsed = true;
+ bracecount--;
+ }
+ fail = true;
+ collapse = 0;
+ break;
+ }
+ }
+ while (1);
+
+ nbraces += bracecount;
+ }
- parse_body:
save_break = c_break_label;
c_break_label = size_one_node;
save_cont = c_cont_label;
c_cont_label = NULL_TREE;
body = push_stmt_list ();
- add_stmt (c_parser_c99_block_statement (parser));
+ if (open_brace_parsed)
+ {
+ location_t here = c_parser_peek_token (parser)->location;
+ stmt = c_begin_compound_stmt (true);
+ c_parser_compound_statement_nostart (parser);
+ add_stmt (c_end_compound_stmt (here, stmt, true));
+ }
+ else
+ add_stmt (c_parser_c99_block_statement (parser));
if (c_cont_label)
- add_stmt (build1 (LABEL_EXPR, void_type_node, c_cont_label));
+ {
+ tree t = build1 (LABEL_EXPR, void_type_node, c_cont_label);
+ SET_EXPR_LOCATION (t, loc);
+ add_stmt (t);
+ }
body = pop_stmt_list (body);
c_break_label = save_break;
c_cont_label = save_cont;
+ while (nbraces)
+ {
+ if (c_parser_next_token_is (parser, CPP_CLOSE_BRACE))
+ {
+ c_parser_consume_token (parser);
+ nbraces--;
+ }
+ else if (c_parser_next_token_is (parser, CPP_SEMICOLON))
+ c_parser_consume_token (parser);
+ else
+ {
+ c_parser_error (parser, "collapsed loops not perfectly nested");
+ while (nbraces)
+ {
+ location_t here = c_parser_peek_token (parser)->location;
+ stmt = c_begin_compound_stmt (true);
+ add_stmt (body);
+ c_parser_compound_statement_nostart (parser);
+ body = c_end_compound_stmt (here, stmt, true);
+ nbraces--;
+ }
+ goto pop_scopes;
+ }
+ }
+
/* Only bother calling c_finish_omp_for if we haven't already generated
an error from the initialization parsing. */
- if (decl != NULL && decl != error_mark_node && init != error_mark_node)
- return c_finish_omp_for (loc, decl, init, cond, incr, body, NULL);
- return NULL;
-
- error_init:
- c_parser_error (parser, "expected iteration declaration or initialization");
- c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, "expected %<)%>");
- decl = init = cond = incr = NULL_TREE;
- goto parse_body;
+ if (!fail)
+ {
+ stmt = c_finish_omp_for (loc, declv, initv, condv, incrv, body, NULL);
+ if (stmt)
+ {
+ if (par_clauses != NULL)
+ {
+ tree *c;
+ for (c = par_clauses; *c ; )
+ if (OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_FIRSTPRIVATE
+ && OMP_CLAUSE_CODE (*c) != OMP_CLAUSE_LASTPRIVATE)
+ c = &OMP_CLAUSE_CHAIN (*c);
+ else
+ {
+ for (i = 0; i < collapse; i++)
+ if (TREE_VEC_ELT (declv, i) == OMP_CLAUSE_DECL (*c))
+ break;
+ if (i == collapse)
+ c = &OMP_CLAUSE_CHAIN (*c);
+ else if (OMP_CLAUSE_CODE (*c) == OMP_CLAUSE_FIRSTPRIVATE)
+ {
+ error_at (loc,
+ "iteration variable %qD should not be firstprivate",
+ OMP_CLAUSE_DECL (*c));
+ *c = OMP_CLAUSE_CHAIN (*c);
+ }
+ else
+ {
+ /* Copy lastprivate (decl) clause to OMP_FOR_CLAUSES,
+ change it to shared (decl) in
+ OMP_PARALLEL_CLAUSES. */
+ tree l = build_omp_clause (OMP_CLAUSE_LOCATION (*c),
+ OMP_CLAUSE_LASTPRIVATE);
+ OMP_CLAUSE_DECL (l) = OMP_CLAUSE_DECL (*c);
+ OMP_CLAUSE_CHAIN (l) = clauses;
+ clauses = l;
+ OMP_CLAUSE_SET_CODE (*c, OMP_CLAUSE_SHARED);
+ }
+ }
+ }
+ OMP_FOR_CLAUSES (stmt) = clauses;
+ }
+ ret = stmt;
+ }
+pop_scopes:
+ while (!VEC_empty (tree, for_block))
+ {
+ /* FIXME diagnostics: LOC below should be the actual location of
+ this particular for block. We need to build a list of
+ locations to go along with FOR_BLOCK. */
+ stmt = c_end_compound_stmt (loc, VEC_pop (tree, for_block), true);
+ add_stmt (stmt);
+ }
+ release_tree_vector (for_block);
+ return ret;
}
/* OpenMP 2.5:
#pragma omp for for-clause[optseq] new-line
for-loop
+
+ LOC is the location of the #pragma token.
*/
#define OMP_FOR_CLAUSE_MASK \
| (1u << PRAGMA_OMP_CLAUSE_REDUCTION) \
| (1u << PRAGMA_OMP_CLAUSE_ORDERED) \
| (1u << PRAGMA_OMP_CLAUSE_SCHEDULE) \
+ | (1u << PRAGMA_OMP_CLAUSE_COLLAPSE) \
| (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
static tree
-c_parser_omp_for (c_parser *parser)
+c_parser_omp_for (location_t loc, c_parser *parser)
{
tree block, clauses, ret;
"#pragma omp for");
block = c_begin_compound_stmt (true);
- ret = c_parser_omp_for_loop (parser);
- if (ret)
- OMP_FOR_CLAUSES (ret) = clauses;
- block = c_end_compound_stmt (block, true);
+ ret = c_parser_omp_for_loop (loc, parser, clauses, NULL);
+ block = c_end_compound_stmt (loc, block, true);
add_stmt (block);
return ret;
/* OpenMP 2.5:
# pragma omp master new-line
structured-block
+
+ LOC is the location of the #pragma token.
*/
static tree
-c_parser_omp_master (c_parser *parser)
+c_parser_omp_master (location_t loc, c_parser *parser)
{
c_parser_skip_to_pragma_eol (parser);
- return c_finish_omp_master (c_parser_omp_structured_block (parser));
+ return c_finish_omp_master (loc, c_parser_omp_structured_block (parser));
}
/* OpenMP 2.5:
# pragma omp ordered new-line
structured-block
+
+ LOC is the location of the #pragma itself.
*/
static tree
-c_parser_omp_ordered (c_parser *parser)
+c_parser_omp_ordered (location_t loc, c_parser *parser)
{
c_parser_skip_to_pragma_eol (parser);
- return c_finish_omp_ordered (c_parser_omp_structured_block (parser));
+ return c_finish_omp_ordered (loc, c_parser_omp_structured_block (parser));
}
/* OpenMP 2.5:
section-sequence:
section-directive[opt] structured-block
- section-sequence section-directive structured-block */
+ section-sequence section-directive structured-block
+
+ SECTIONS_LOC is the location of the #pragma omp sections. */
static tree
-c_parser_omp_sections_scope (c_parser *parser)
+c_parser_omp_sections_scope (location_t sections_loc, c_parser *parser)
{
tree stmt, substmt;
bool error_suppress = false;
location_t loc;
+ loc = c_parser_peek_token (parser)->location;
if (!c_parser_require (parser, CPP_OPEN_BRACE, "expected %<{%>"))
{
/* Avoid skipping until the end of the block. */
stmt = push_stmt_list ();
- loc = c_parser_peek_token (parser)->location;
if (c_parser_peek_token (parser)->pragma_kind != PRAGMA_OMP_SECTION)
{
substmt = push_stmt_list ();
}
else if (!error_suppress)
{
- error ("%Hexpected %<#pragma omp section%> or %<}%>",
- &loc);
+ error_at (loc, "expected %<#pragma omp section%> or %<}%>");
error_suppress = true;
}
substmt = pop_stmt_list (stmt);
stmt = make_node (OMP_SECTIONS);
+ SET_EXPR_LOCATION (stmt, sections_loc);
TREE_TYPE (stmt) = void_type_node;
OMP_SECTIONS_BODY (stmt) = substmt;
/* OpenMP 2.5:
# pragma omp sections sections-clause[optseq] newline
sections-scope
+
+ LOC is the location of the #pragma token.
*/
#define OMP_SECTIONS_CLAUSE_MASK \
| (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
static tree
-c_parser_omp_sections (c_parser *parser)
+c_parser_omp_sections (location_t loc, c_parser *parser)
{
tree block, clauses, ret;
"#pragma omp sections");
block = c_begin_compound_stmt (true);
- ret = c_parser_omp_sections_scope (parser);
+ ret = c_parser_omp_sections_scope (loc, parser);
if (ret)
OMP_SECTIONS_CLAUSES (ret) = clauses;
- block = c_end_compound_stmt (block, true);
+ block = c_end_compound_stmt (loc, block, true);
add_stmt (block);
return ret;
# pragma parallel parallel-clause new-line
# pragma parallel for parallel-for-clause new-line
# pragma parallel sections parallel-sections-clause new-line
+
+ LOC is the location of the #pragma token.
*/
#define OMP_PARALLEL_CLAUSE_MASK \
| (1u << PRAGMA_OMP_CLAUSE_NUM_THREADS))
static tree
-c_parser_omp_parallel (c_parser *parser)
+c_parser_omp_parallel (location_t loc, c_parser *parser)
{
enum pragma_kind p_kind = PRAGMA_OMP_PARALLEL;
const char *p_name = "#pragma omp parallel";
case PRAGMA_OMP_PARALLEL:
block = c_begin_omp_parallel ();
c_parser_statement (parser);
- stmt = c_finish_omp_parallel (clauses, block);
+ stmt = c_finish_omp_parallel (loc, clauses, block);
break;
case PRAGMA_OMP_PARALLEL_FOR:
block = c_begin_omp_parallel ();
- c_split_parallel_clauses (clauses, &par_clause, &ws_clause);
- stmt = c_parser_omp_for_loop (parser);
- if (stmt)
- OMP_FOR_CLAUSES (stmt) = ws_clause;
- stmt = c_finish_omp_parallel (par_clause, block);
+ c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause);
+ c_parser_omp_for_loop (loc, parser, ws_clause, &par_clause);
+ stmt = c_finish_omp_parallel (loc, par_clause, block);
OMP_PARALLEL_COMBINED (stmt) = 1;
break;
case PRAGMA_OMP_PARALLEL_SECTIONS:
block = c_begin_omp_parallel ();
- c_split_parallel_clauses (clauses, &par_clause, &ws_clause);
- stmt = c_parser_omp_sections_scope (parser);
+ c_split_parallel_clauses (loc, clauses, &par_clause, &ws_clause);
+ stmt = c_parser_omp_sections_scope (loc, parser);
if (stmt)
OMP_SECTIONS_CLAUSES (stmt) = ws_clause;
- stmt = c_finish_omp_parallel (par_clause, block);
+ stmt = c_finish_omp_parallel (loc, par_clause, block);
OMP_PARALLEL_COMBINED (stmt) = 1;
break;
/* OpenMP 2.5:
# pragma omp single single-clause[optseq] new-line
structured-block
+
+ LOC is the location of the #pragma.
*/
#define OMP_SINGLE_CLAUSE_MASK \
| (1u << PRAGMA_OMP_CLAUSE_NOWAIT))
static tree
-c_parser_omp_single (c_parser *parser)
+c_parser_omp_single (location_t loc, c_parser *parser)
{
tree stmt = make_node (OMP_SINGLE);
+ SET_EXPR_LOCATION (stmt, loc);
TREE_TYPE (stmt) = void_type_node;
OMP_SINGLE_CLAUSES (stmt)
return add_stmt (stmt);
}
+/* OpenMP 3.0:
+ # pragma omp task task-clause[optseq] new-line
+
+ LOC is the location of the #pragma.
+*/
+
+#define OMP_TASK_CLAUSE_MASK \
+ ( (1u << PRAGMA_OMP_CLAUSE_IF) \
+ | (1u << PRAGMA_OMP_CLAUSE_UNTIED) \
+ | (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \
+ | (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
+ | (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
+ | (1u << PRAGMA_OMP_CLAUSE_SHARED) \
+ | (1u << PRAGMA_OMP_CLAUSE_FINAL) \
+ | (1u << PRAGMA_OMP_CLAUSE_MERGEABLE))
+
+static tree
+c_parser_omp_task (location_t loc, c_parser *parser)
+{
+ tree clauses, block;
+
+ clauses = c_parser_omp_all_clauses (parser, OMP_TASK_CLAUSE_MASK,
+ "#pragma omp task");
+
+ block = c_begin_omp_task ();
+ c_parser_statement (parser);
+ return c_finish_omp_task (loc, clauses, block);
+}
+
+/* OpenMP 3.0:
+ # pragma omp taskwait new-line
+*/
+
+static void
+c_parser_omp_taskwait (c_parser *parser)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ c_parser_consume_pragma (parser);
+ c_parser_skip_to_pragma_eol (parser);
+
+ c_finish_omp_taskwait (loc);
+}
+
+/* OpenMP 3.1:
+ # pragma omp taskyield new-line
+*/
+
+static void
+c_parser_omp_taskyield (c_parser *parser)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ c_parser_consume_pragma (parser);
+ c_parser_skip_to_pragma_eol (parser);
+
+ c_finish_omp_taskyield (loc);
+}
/* Main entry point to parsing most OpenMP pragmas. */
p_kind = c_parser_peek_token (parser)->pragma_kind;
c_parser_consume_pragma (parser);
- /* For all constructs below except #pragma omp atomic
- MUST_NOT_THROW catch handlers are needed when exceptions
- are enabled. */
- if (p_kind != PRAGMA_OMP_ATOMIC)
- c_maybe_initialize_eh ();
-
switch (p_kind)
{
case PRAGMA_OMP_ATOMIC:
- c_parser_omp_atomic (parser);
+ c_parser_omp_atomic (loc, parser);
return;
case PRAGMA_OMP_CRITICAL:
- stmt = c_parser_omp_critical (parser);
+ stmt = c_parser_omp_critical (loc, parser);
break;
case PRAGMA_OMP_FOR:
- stmt = c_parser_omp_for (parser);
+ stmt = c_parser_omp_for (loc, parser);
break;
case PRAGMA_OMP_MASTER:
- stmt = c_parser_omp_master (parser);
+ stmt = c_parser_omp_master (loc, parser);
break;
case PRAGMA_OMP_ORDERED:
- stmt = c_parser_omp_ordered (parser);
+ stmt = c_parser_omp_ordered (loc, parser);
break;
case PRAGMA_OMP_PARALLEL:
- stmt = c_parser_omp_parallel (parser);
+ stmt = c_parser_omp_parallel (loc, parser);
break;
case PRAGMA_OMP_SECTIONS:
- stmt = c_parser_omp_sections (parser);
+ stmt = c_parser_omp_sections (loc, parser);
break;
case PRAGMA_OMP_SINGLE:
- stmt = c_parser_omp_single (parser);
+ stmt = c_parser_omp_single (loc, parser);
+ break;
+ case PRAGMA_OMP_TASK:
+ stmt = c_parser_omp_task (loc, parser);
break;
default:
gcc_unreachable ();
}
if (stmt)
- SET_EXPR_LOCATION (stmt, loc);
+ gcc_assert (EXPR_LOCATION (stmt) != UNKNOWN_LOCATION);
}
c_parser_omp_threadprivate (c_parser *parser)
{
tree vars, t;
+ location_t loc;
c_parser_consume_pragma (parser);
- vars = c_parser_omp_var_list_parens (parser, 0, NULL);
+ loc = c_parser_peek_token (parser)->location;
+ vars = c_parser_omp_var_list_parens (parser, OMP_CLAUSE_ERROR, NULL);
/* Mark every variable in VARS to be assigned thread local storage. */
for (t = vars; t; t = TREE_CHAIN (t))
{
tree v = TREE_PURPOSE (t);
+ /* FIXME diagnostics: Ideally we should keep individual
+ locations for all the variables in the var list to make the
+ following errors more precise. Perhaps
+ c_parser_omp_var_list_parens() should construct a list of
+ locations to go along with the var list. */
+
/* If V had already been marked threadprivate, it doesn't matter
whether it had been used prior to this point. */
if (TREE_CODE (v) != VAR_DECL)
- error ("%qD is not a variable", v);
+ error_at (loc, "%qD is not a variable", v);
else if (TREE_USED (v) && !C_DECL_THREADPRIVATE_P (v))
- error ("%qE declared %<threadprivate%> after first use", v);
+ error_at (loc, "%qE declared %<threadprivate%> after first use", v);
else if (! TREE_STATIC (v) && ! DECL_EXTERNAL (v))
- error ("automatic variable %qE cannot be %<threadprivate%>", v);
+ error_at (loc, "automatic variable %qE cannot be %<threadprivate%>", v);
else if (TREE_TYPE (v) == error_mark_node)
;
else if (! COMPLETE_TYPE_P (TREE_TYPE (v)))
- error ("%<threadprivate%> %qE has incomplete type", v);
+ error_at (loc, "%<threadprivate%> %qE has incomplete type", v);
else
{
if (! DECL_THREAD_LOCAL_P (v))
c_parser_skip_to_pragma_eol (parser);
}
+/* Parse a transaction attribute (GCC Extension).
+
+ transaction-attribute:
+ attributes
+ [ [ any-word ] ]
+
+ The transactional memory language description is written for C++,
+ and uses the C++0x attribute syntax. For compatibility, allow the
+ bracket style for transactions in C as well. */
+
+static tree
+c_parser_transaction_attributes (c_parser *parser)
+{
+ tree attr_name, attr = NULL;
+
+ if (c_parser_next_token_is_keyword (parser, RID_ATTRIBUTE))
+ return c_parser_attributes (parser);
+
+ if (!c_parser_next_token_is (parser, CPP_OPEN_SQUARE))
+ return NULL_TREE;
+ c_parser_consume_token (parser);
+ if (!c_parser_require (parser, CPP_OPEN_SQUARE, "expected %<[%>"))
+ goto error1;
+
+ attr_name = c_parser_attribute_any_word (parser);
+ if (attr_name)
+ {
+ c_parser_consume_token (parser);
+ attr = build_tree_list (attr_name, NULL_TREE);
+ }
+ else
+ c_parser_error (parser, "expected identifier");
+
+ c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>");
+ error1:
+ c_parser_skip_until_found (parser, CPP_CLOSE_SQUARE, "expected %<]%>");
+ return attr;
+}
+
+/* Parse a __transaction_atomic or __transaction_relaxed statement
+ (GCC Extension).
+
+ transaction-statement:
+ __transaction_atomic transaction-attribute[opt] compound-statement
+ __transaction_relaxed compound-statement
+
+ Note that the only valid attribute is: "outer".
+*/
+
+static tree
+c_parser_transaction (c_parser *parser, enum rid keyword)
+{
+ unsigned int old_in = parser->in_transaction;
+ unsigned int this_in = 1, new_in;
+ location_t loc = c_parser_peek_token (parser)->location;
+ tree stmt, attrs;
+
+ gcc_assert ((keyword == RID_TRANSACTION_ATOMIC
+ || keyword == RID_TRANSACTION_RELAXED)
+ && c_parser_next_token_is_keyword (parser, keyword));
+ c_parser_consume_token (parser);
+
+ if (keyword == RID_TRANSACTION_RELAXED)
+ this_in |= TM_STMT_ATTR_RELAXED;
+ else
+ {
+ attrs = c_parser_transaction_attributes (parser);
+ if (attrs)
+ this_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER);
+ }
+
+ /* Keep track if we're in the lexical scope of an outer transaction. */
+ new_in = this_in | (old_in & TM_STMT_ATTR_OUTER);
+
+ parser->in_transaction = new_in;
+ stmt = c_parser_compound_statement (parser);
+ parser->in_transaction = old_in;
+
+ if (flag_tm)
+ stmt = c_finish_transaction (loc, stmt, this_in);
+ else
+ error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ?
+ "%<__transaction_atomic%> without transactional memory support enabled"
+ : "%<__transaction_relaxed %> "
+ "without transactional memory support enabled"));
+
+ return stmt;
+}
+
+/* Parse a __transaction_atomic or __transaction_relaxed expression
+ (GCC Extension).
+
+ transaction-expression:
+ __transaction_atomic ( expression )
+ __transaction_relaxed ( expression )
+*/
+
+static struct c_expr
+c_parser_transaction_expression (c_parser *parser, enum rid keyword)
+{
+ struct c_expr ret;
+ unsigned int old_in = parser->in_transaction;
+ unsigned int this_in = 1;
+ location_t loc = c_parser_peek_token (parser)->location;
+ tree attrs;
+
+ gcc_assert ((keyword == RID_TRANSACTION_ATOMIC
+ || keyword == RID_TRANSACTION_RELAXED)
+ && c_parser_next_token_is_keyword (parser, keyword));
+ c_parser_consume_token (parser);
+
+ if (keyword == RID_TRANSACTION_RELAXED)
+ this_in |= TM_STMT_ATTR_RELAXED;
+ else
+ {
+ attrs = c_parser_transaction_attributes (parser);
+ if (attrs)
+ this_in |= parse_tm_stmt_attr (attrs, 0);
+ }
+
+ parser->in_transaction = this_in;
+ if (c_parser_require (parser, CPP_OPEN_PAREN, "expected %<(%>"))
+ {
+ tree expr = c_parser_expression (parser).value;
+ ret.original_type = TREE_TYPE (expr);
+ ret.value = build1 (TRANSACTION_EXPR, ret.original_type, expr);
+ if (this_in & TM_STMT_ATTR_RELAXED)
+ TRANSACTION_EXPR_RELAXED (ret.value) = 1;
+ SET_EXPR_LOCATION (ret.value, loc);
+ ret.original_code = TRANSACTION_EXPR;
+ if (!c_parser_require (parser, CPP_CLOSE_PAREN, "expected %<)%>"))
+ {
+ c_parser_skip_until_found (parser, CPP_CLOSE_PAREN, NULL);
+ goto error;
+ }
+ }
+ else
+ {
+ error:
+ ret.value = error_mark_node;
+ ret.original_code = ERROR_MARK;
+ ret.original_type = NULL;
+ }
+ parser->in_transaction = old_in;
+
+ if (!flag_tm)
+ error_at (loc, (keyword == RID_TRANSACTION_ATOMIC ?
+ "%<__transaction_atomic%> without transactional memory support enabled"
+ : "%<__transaction_relaxed %> "
+ "without transactional memory support enabled"));
+
+ return ret;
+}
+
+/* Parse a __transaction_cancel statement (GCC Extension).
+
+ transaction-cancel-statement:
+ __transaction_cancel transaction-attribute[opt] ;
+
+ Note that the only valid attribute is "outer".
+*/
+
+static tree
+c_parser_transaction_cancel(c_parser *parser)
+{
+ location_t loc = c_parser_peek_token (parser)->location;
+ tree attrs;
+ bool is_outer = false;
+
+ gcc_assert (c_parser_next_token_is_keyword (parser, RID_TRANSACTION_CANCEL));
+ c_parser_consume_token (parser);
+
+ attrs = c_parser_transaction_attributes (parser);
+ if (attrs)
+ is_outer = (parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER) != 0);
+
+ if (!flag_tm)
+ {
+ error_at (loc, "%<__transaction_cancel%> without "
+ "transactional memory support enabled");
+ goto ret_error;
+ }
+ else if (parser->in_transaction & TM_STMT_ATTR_RELAXED)
+ {
+ error_at (loc, "%<__transaction_cancel%> within a "
+ "%<__transaction_relaxed%>");
+ goto ret_error;
+ }
+ else if (is_outer)
+ {
+ if ((parser->in_transaction & TM_STMT_ATTR_OUTER) == 0
+ && !is_tm_may_cancel_outer (current_function_decl))
+ {
+ error_at (loc, "outer %<__transaction_cancel%> not "
+ "within outer %<__transaction_atomic%>");
+ error_at (loc, " or a %<transaction_may_cancel_outer%> function");
+ goto ret_error;
+ }
+ }
+ else if (parser->in_transaction == 0)
+ {
+ error_at (loc, "%<__transaction_cancel%> not within "
+ "%<__transaction_atomic%>");
+ goto ret_error;
+ }
+
+ return add_stmt (build_tm_abort_call (loc, is_outer));
+
+ ret_error:
+ return build1 (NOP_EXPR, void_type_node, error_mark_node);
+}
\f
/* Parse a single source file. */
if (c_parser_peek_token (&tparser)->pragma_kind == PRAGMA_GCC_PCH_PREPROCESS)
c_parser_pragma_pch_preprocess (&tparser);
- the_parser = GGC_NEW (c_parser);
+ the_parser = ggc_alloc_c_parser ();
*the_parser = tparser;
+ /* Initialize EH, if we've been told to do so. */
+ if (flag_exceptions)
+ using_eh_for_cleanups ();
+
c_parser_translation_unit (the_parser);
the_parser = NULL;
}
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