/* C++ Parser.
Copyright (C) 2000, 2001, 2002, 2003, 2004,
- 2005, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+ 2005, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
Written by Mark Mitchell <mark@codesourcery.com>.
This file is part of GCC.
/* a comma operator */
NIC_COMMA,
/* a call to a constructor */
- NIC_CONSTRUCTOR
+ NIC_CONSTRUCTOR,
+ /* a transaction expression */
+ NIC_TRANSACTION
} non_integral_constant;
/* The various kinds of errors about name-lookup failing. */
RT_INTERATION, /* iteration-statement */
RT_JUMP, /* jump-statement */
RT_CLASS_KEY, /* class-key */
- RT_CLASS_TYPENAME_TEMPLATE /* class, typename, or template */
+ RT_CLASS_TYPENAME_TEMPLATE, /* class, typename, or template */
+ RT_TRANSACTION_ATOMIC, /* __transaction_atomic */
+ RT_TRANSACTION_RELAXED, /* __transaction_relaxed */
+ RT_TRANSACTION_CANCEL /* __transaction_cancel */
} required_token;
/* Prototypes. */
(cp_lexer *);
static void cp_lexer_rollback_tokens
(cp_lexer *);
-#ifdef ENABLE_CHECKING
static void cp_lexer_print_token
(FILE *, cp_token *);
static inline bool cp_lexer_debugging_p
(cp_lexer *) ATTRIBUTE_UNUSED;
static void cp_lexer_stop_debugging
(cp_lexer *) ATTRIBUTE_UNUSED;
-#else
-/* If we define cp_lexer_debug_stream to NULL it will provoke warnings
- about passing NULL to functions that require non-NULL arguments
- (fputs, fprintf). It will never be used, so all we need is a value
- of the right type that's guaranteed not to be NULL. */
-#define cp_lexer_debug_stream stdout
-#define cp_lexer_print_token(str, tok) (void) 0
-#define cp_lexer_debugging_p(lexer) 0
-#endif /* ENABLE_CHECKING */
static cp_token_cache *cp_token_cache_new
(cp_token *, cp_token *);
static void cp_parser_initial_pragma
(cp_token *);
+static tree cp_literal_operator_id
+ (const char *);
+
/* Manifest constants. */
#define CP_LEXER_BUFFER_SIZE ((256 * 1024) / sizeof (cp_token))
#define CP_SAVED_TOKEN_STACK 5
/* Variables. */
-#ifdef ENABLE_CHECKING
/* The stream to which debugging output should be written. */
static FILE *cp_lexer_debug_stream;
-#endif /* ENABLE_CHECKING */
/* Nonzero if we are parsing an unevaluated operand: an operand to
sizeof, typeof, or alignof. */
int cp_unevaluated_operand;
-#ifdef ENABLE_CHECKING
-/* Dump up to NUM tokens in BUFFER to FILE. If NUM is 0, dump all the
- tokens. */
+/* Dump up to NUM tokens in BUFFER to FILE starting with token
+ START_TOKEN. If START_TOKEN is NULL, the dump starts with the
+ first token in BUFFER. If NUM is 0, dump all the tokens. If
+ CURR_TOKEN is set and it is one of the tokens in BUFFER, it will be
+ highlighted by surrounding it in [[ ]]. */
-void
-cp_lexer_dump_tokens (FILE *file, VEC(cp_token,gc) *buffer, unsigned num)
+static void
+cp_lexer_dump_tokens (FILE *file, VEC(cp_token,gc) *buffer,
+ cp_token *start_token, unsigned num,
+ cp_token *curr_token)
{
- unsigned i;
+ unsigned i, nprinted;
cp_token *token;
+ bool do_print;
fprintf (file, "%u tokens\n", VEC_length (cp_token, buffer));
+ if (buffer == NULL)
+ return;
+
if (num == 0)
num = VEC_length (cp_token, buffer);
- for (i = 0; VEC_iterate (cp_token, buffer, i, token) && i < num; i++)
+ if (start_token == NULL)
+ start_token = VEC_address (cp_token, buffer);
+
+ if (start_token > VEC_address (cp_token, buffer))
+ {
+ cp_lexer_print_token (file, VEC_index (cp_token, buffer, 0));
+ fprintf (file, " ... ");
+ }
+
+ do_print = false;
+ nprinted = 0;
+ for (i = 0; VEC_iterate (cp_token, buffer, i, token) && nprinted < num; i++)
{
+ if (token == start_token)
+ do_print = true;
+
+ if (!do_print)
+ continue;
+
+ nprinted++;
+ if (token == curr_token)
+ fprintf (file, "[[");
+
cp_lexer_print_token (file, token);
+
+ if (token == curr_token)
+ fprintf (file, "]]");
+
switch (token->type)
{
case CPP_SEMICOLON:
void
cp_lexer_debug_tokens (VEC(cp_token,gc) *buffer)
{
- cp_lexer_dump_tokens (stderr, buffer, 0);
+ cp_lexer_dump_tokens (stderr, buffer, NULL, 0, NULL);
+}
+
+
+/* Dump the cp_parser tree field T to FILE if T is non-NULL. DESC is the
+ description for T. */
+
+static void
+cp_debug_print_tree_if_set (FILE *file, const char *desc, tree t)
+{
+ if (t)
+ {
+ fprintf (file, "%s: ", desc);
+ print_node_brief (file, "", t, 0);
+ }
+}
+
+
+/* Dump parser context C to FILE. */
+
+static void
+cp_debug_print_context (FILE *file, cp_parser_context *c)
+{
+ const char *status_s[] = { "OK", "ERROR", "COMMITTED" };
+ fprintf (file, "{ status = %s, scope = ", status_s[c->status]);
+ print_node_brief (file, "", c->object_type, 0);
+ fprintf (file, "}\n");
+}
+
+
+/* Print the stack of parsing contexts to FILE starting with FIRST. */
+
+static void
+cp_debug_print_context_stack (FILE *file, cp_parser_context *first)
+{
+ unsigned i;
+ cp_parser_context *c;
+
+ fprintf (file, "Parsing context stack:\n");
+ for (i = 0, c = first; c; c = c->next, i++)
+ {
+ fprintf (file, "\t#%u: ", i);
+ cp_debug_print_context (file, c);
+ }
+}
+
+
+/* Print the value of FLAG to FILE. DESC is a string describing the flag. */
+
+static void
+cp_debug_print_flag (FILE *file, const char *desc, bool flag)
+{
+ if (flag)
+ fprintf (file, "%s: true\n", desc);
+}
+
+
+/* Print an unparsed function entry UF to FILE. */
+
+static void
+cp_debug_print_unparsed_function (FILE *file, cp_unparsed_functions_entry *uf)
+{
+ unsigned i;
+ cp_default_arg_entry *default_arg_fn;
+ tree fn;
+
+ fprintf (file, "\tFunctions with default args:\n");
+ for (i = 0;
+ VEC_iterate (cp_default_arg_entry, uf->funs_with_default_args, i,
+ default_arg_fn);
+ i++)
+ {
+ fprintf (file, "\t\tClass type: ");
+ print_node_brief (file, "", default_arg_fn->class_type, 0);
+ fprintf (file, "\t\tDeclaration: ");
+ print_node_brief (file, "", default_arg_fn->decl, 0);
+ fprintf (file, "\n");
+ }
+
+ fprintf (file, "\n\tFunctions with definitions that require "
+ "post-processing\n\t\t");
+ for (i = 0; VEC_iterate (tree, uf->funs_with_definitions, i, fn); i++)
+ {
+ print_node_brief (file, "", fn, 0);
+ fprintf (file, " ");
+ }
+ fprintf (file, "\n");
+
+ fprintf (file, "\n\tNon-static data members with initializers that require "
+ "post-processing\n\t\t");
+ for (i = 0; VEC_iterate (tree, uf->nsdmis, i, fn); i++)
+ {
+ print_node_brief (file, "", fn, 0);
+ fprintf (file, " ");
+ }
+ fprintf (file, "\n");
+}
+
+
+/* Print the stack of unparsed member functions S to FILE. */
+
+static void
+cp_debug_print_unparsed_queues (FILE *file,
+ VEC(cp_unparsed_functions_entry, gc) *s)
+{
+ unsigned i;
+ cp_unparsed_functions_entry *uf;
+
+ fprintf (file, "Unparsed functions\n");
+ for (i = 0; VEC_iterate (cp_unparsed_functions_entry, s, i, uf); i++)
+ {
+ fprintf (file, "#%u:\n", i);
+ cp_debug_print_unparsed_function (file, uf);
+ }
+}
+
+
+/* Dump the tokens in a window of size WINDOW_SIZE around the next_token for
+ the given PARSER. If FILE is NULL, the output is printed on stderr. */
+
+static void
+cp_debug_parser_tokens (FILE *file, cp_parser *parser, int window_size)
+{
+ cp_token *next_token, *first_token, *start_token;
+
+ if (file == NULL)
+ file = stderr;
+
+ next_token = parser->lexer->next_token;
+ first_token = VEC_address (cp_token, parser->lexer->buffer);
+ start_token = (next_token > first_token + window_size / 2)
+ ? next_token - window_size / 2
+ : first_token;
+ cp_lexer_dump_tokens (file, parser->lexer->buffer, start_token, window_size,
+ next_token);
+}
+
+
+/* Dump debugging information for the given PARSER. If FILE is NULL,
+ the output is printed on stderr. */
+
+void
+cp_debug_parser (FILE *file, cp_parser *parser)
+{
+ const size_t window_size = 20;
+ cp_token *token;
+ expanded_location eloc;
+
+ if (file == NULL)
+ file = stderr;
+
+ fprintf (file, "Parser state\n\n");
+ fprintf (file, "Number of tokens: %u\n",
+ VEC_length (cp_token, parser->lexer->buffer));
+ cp_debug_print_tree_if_set (file, "Lookup scope", parser->scope);
+ cp_debug_print_tree_if_set (file, "Object scope",
+ parser->object_scope);
+ cp_debug_print_tree_if_set (file, "Qualifying scope",
+ parser->qualifying_scope);
+ cp_debug_print_context_stack (file, parser->context);
+ cp_debug_print_flag (file, "Allow GNU extensions",
+ parser->allow_gnu_extensions_p);
+ cp_debug_print_flag (file, "'>' token is greater-than",
+ parser->greater_than_is_operator_p);
+ cp_debug_print_flag (file, "Default args allowed in current "
+ "parameter list", parser->default_arg_ok_p);
+ cp_debug_print_flag (file, "Parsing integral constant-expression",
+ parser->integral_constant_expression_p);
+ cp_debug_print_flag (file, "Allow non-constant expression in current "
+ "constant-expression",
+ parser->allow_non_integral_constant_expression_p);
+ cp_debug_print_flag (file, "Seen non-constant expression",
+ parser->non_integral_constant_expression_p);
+ cp_debug_print_flag (file, "Local names and 'this' forbidden in "
+ "current context",
+ parser->local_variables_forbidden_p);
+ cp_debug_print_flag (file, "In unbraced linkage specification",
+ parser->in_unbraced_linkage_specification_p);
+ cp_debug_print_flag (file, "Parsing a declarator",
+ parser->in_declarator_p);
+ cp_debug_print_flag (file, "In template argument list",
+ parser->in_template_argument_list_p);
+ cp_debug_print_flag (file, "Parsing an iteration statement",
+ parser->in_statement & IN_ITERATION_STMT);
+ cp_debug_print_flag (file, "Parsing a switch statement",
+ parser->in_statement & IN_SWITCH_STMT);
+ cp_debug_print_flag (file, "Parsing a structured OpenMP block",
+ parser->in_statement & IN_OMP_BLOCK);
+ cp_debug_print_flag (file, "Parsing a an OpenMP loop",
+ parser->in_statement & IN_OMP_FOR);
+ cp_debug_print_flag (file, "Parsing an if statement",
+ parser->in_statement & IN_IF_STMT);
+ cp_debug_print_flag (file, "Parsing a type-id in an expression "
+ "context", parser->in_type_id_in_expr_p);
+ cp_debug_print_flag (file, "Declarations are implicitly extern \"C\"",
+ parser->implicit_extern_c);
+ cp_debug_print_flag (file, "String expressions should be translated "
+ "to execution character set",
+ parser->translate_strings_p);
+ cp_debug_print_flag (file, "Parsing function body outside of a "
+ "local class", parser->in_function_body);
+ cp_debug_print_flag (file, "Auto correct a colon to a scope operator",
+ parser->colon_corrects_to_scope_p);
+ if (parser->type_definition_forbidden_message)
+ fprintf (file, "Error message for forbidden type definitions: %s\n",
+ parser->type_definition_forbidden_message);
+ cp_debug_print_unparsed_queues (file, parser->unparsed_queues);
+ fprintf (file, "Number of class definitions in progress: %u\n",
+ parser->num_classes_being_defined);
+ fprintf (file, "Number of template parameter lists for the current "
+ "declaration: %u\n", parser->num_template_parameter_lists);
+ cp_debug_parser_tokens (file, parser, window_size);
+ token = parser->lexer->next_token;
+ fprintf (file, "Next token to parse:\n");
+ fprintf (file, "\tToken: ");
+ cp_lexer_print_token (file, token);
+ eloc = expand_location (token->location);
+ fprintf (file, "\n\tFile: %s\n", eloc.file);
+ fprintf (file, "\tLine: %d\n", eloc.line);
+ fprintf (file, "\tColumn: %d\n", eloc.column);
}
-#endif
/* Allocate memory for a new lexer object and return it. */
/* Allocate the memory. */
lexer = ggc_alloc_cleared_cp_lexer ();
-#ifdef ENABLE_CHECKING
/* Initially we are not debugging. */
lexer->debugging_p = false;
-#endif /* ENABLE_CHECKING */
+
lexer->saved_tokens = VEC_alloc (cp_token_position, heap,
CP_SAVED_TOKEN_STACK);
lexer->saved_tokens = VEC_alloc (cp_token_position, heap,
CP_SAVED_TOKEN_STACK);
-#ifdef ENABLE_CHECKING
/* Initially we are not debugging. */
lexer->debugging_p = false;
-#endif
gcc_assert (!lexer->next_token->purged_p);
return lexer;
/* Returns nonzero if debugging information should be output. */
-#ifdef ENABLE_CHECKING
-
static inline bool
cp_lexer_debugging_p (cp_lexer *lexer)
{
return lexer->debugging_p;
}
-#endif /* ENABLE_CHECKING */
static inline cp_token_position
cp_lexer_token_position (cp_lexer *lexer, bool previous_p)
/* Warn about the C++0x keyword (but still treat it as
an identifier). */
warning (OPT_Wc__0x_compat,
- "identifier %qE will become a keyword in C++0x",
+ "identifier %qE is a keyword in C++11",
token->u.value);
/* Clear out the C_RID_CODE so we don't warn about this
}
}
+/* Returns TRUE iff the token T begins a decltype type. */
+
+static bool
+token_is_decltype (cp_token *t)
+{
+ return (t->keyword == RID_DECLTYPE
+ || t->type == CPP_DECLTYPE);
+}
+
+/* Returns TRUE iff the next token begins a decltype type. */
+
+static bool
+cp_lexer_next_token_is_decltype (cp_lexer *lexer)
+{
+ cp_token *t = cp_lexer_peek_token (lexer);
+ return token_is_decltype (t);
+}
+
/* Return a pointer to the Nth token in the token stream. If N is 1,
then this is precisely equivalent to cp_lexer_peek_token (except
that it is not inline). One would like to disallow that case, but
/* Print a representation of the TOKEN on the STREAM. */
-#ifdef ENABLE_CHECKING
-
static void
cp_lexer_print_token (FILE * stream, cp_token *token)
{
cp_lexer_start_debugging (cp_lexer* lexer)
{
lexer->debugging_p = true;
+ cp_lexer_debug_stream = stderr;
}
/* Stop emitting debugging information. */
cp_lexer_stop_debugging (cp_lexer* lexer)
{
lexer->debugging_p = false;
+ cp_lexer_debug_stream = NULL;
}
-#endif /* ENABLE_CHECKING */
-
/* Create a new cp_token_cache, representing a range of tokens. */
static cp_token_cache *
VEC_last (cp_unparsed_functions_entry, parser->unparsed_queues)->funs_with_default_args
#define unparsed_funs_with_definitions \
VEC_last (cp_unparsed_functions_entry, parser->unparsed_queues)->funs_with_definitions
+#define unparsed_nsdmis \
+ VEC_last (cp_unparsed_functions_entry, parser->unparsed_queues)->nsdmis
static void
push_unparsed_function_queues (cp_parser *parser)
parser->unparsed_queues, NULL);
unparsed_funs_with_default_args = NULL;
unparsed_funs_with_definitions = make_tree_vector ();
+ unparsed_nsdmis = NULL;
}
static void
(cp_parser *);
static tree cp_parser_string_literal
(cp_parser *, bool, bool);
+static tree cp_parser_userdef_char_literal
+ (cp_parser *);
+static tree cp_parser_userdef_string_literal
+ (cp_token *);
+static tree cp_parser_userdef_numeric_literal
+ (cp_parser *);
/* Basic concepts [gram.basic] */
(cp_parser *, tree, tree);
static tree cp_parser_range_for
(cp_parser *, tree, tree, tree);
+static void do_range_for_auto_deduction
+ (tree, tree);
static tree cp_parser_perform_range_for_lookup
(tree, tree *, tree *);
static tree cp_parser_range_for_member_function
(cp_parser *, bool);
static void cp_parser_using_directive
(cp_parser *);
+static tree cp_parser_alias_declaration
+ (cp_parser *);
static void cp_parser_asm_definition
(cp_parser *);
static void cp_parser_linkage_specification
static cp_virt_specifiers cp_parser_virt_specifier_seq_opt
(cp_parser *);
static tree cp_parser_late_return_type_opt
- (cp_parser *);
+ (cp_parser *, cp_cv_quals);
static tree cp_parser_declarator_id
(cp_parser *, bool);
static tree cp_parser_type_id
static void cp_parser_label_declaration
(cp_parser *);
+/* Transactional Memory Extensions */
+
+static tree cp_parser_transaction
+ (cp_parser *, enum rid);
+static tree cp_parser_transaction_expression
+ (cp_parser *, enum rid);
+static bool cp_parser_function_transaction
+ (cp_parser *, enum rid);
+static tree cp_parser_transaction_cancel
+ (cp_parser *);
+
enum pragma_context { pragma_external, pragma_stmt, pragma_compound };
static bool cp_parser_pragma
(cp_parser *, enum pragma_context);
(cp_parser *, tree);
static tree cp_parser_save_member_function_body
(cp_parser *, cp_decl_specifier_seq *, cp_declarator *, tree);
+static tree cp_parser_save_nsdmi
+ (cp_parser *);
static tree cp_parser_enclosed_template_argument_list
(cp_parser *);
static void cp_parser_save_default_args
(cp_parser *, tree);
static void cp_parser_late_parsing_for_member
(cp_parser *, tree);
+static tree cp_parser_late_parse_one_default_arg
+ (cp_parser *, tree, tree, tree);
+static void cp_parser_late_parsing_nsdmi
+ (cp_parser *, tree);
static void cp_parser_late_parsing_default_args
(cp_parser *, tree);
static tree cp_parser_sizeof_operand
(cp_parser *);
static bool cp_parser_cache_group
(cp_parser *, enum cpp_ttype, unsigned);
+static tree cp_parser_cache_defarg
+ (cp_parser *parser, bool nsdmi);
static void cp_parser_parse_tentatively
(cp_parser *);
static void cp_parser_commit_to_tentative_parse
(cp_parser *);
static bool cp_parser_allow_gnu_extensions_p
(cp_parser *);
+static bool cp_parser_is_pure_string_literal
+ (cp_token *);
static bool cp_parser_is_string_literal
(cp_token *);
static bool cp_parser_is_keyword
/* Returns nonzero if TOKEN is a string literal. */
static bool
-cp_parser_is_string_literal (cp_token* token)
+cp_parser_is_pure_string_literal (cp_token* token)
{
return (token->type == CPP_STRING ||
token->type == CPP_STRING16 ||
token->type == CPP_UTF8STRING);
}
+/* Returns nonzero if TOKEN is a string literal
+ of a user-defined string literal. */
+
+static bool
+cp_parser_is_string_literal (cp_token* token)
+{
+ return (cp_parser_is_pure_string_literal (token) ||
+ token->type == CPP_STRING_USERDEF ||
+ token->type == CPP_STRING16_USERDEF ||
+ token->type == CPP_STRING32_USERDEF ||
+ token->type == CPP_WSTRING_USERDEF ||
+ token->type == CPP_UTF8STRING_USERDEF);
+}
+
/* Returns nonzero if TOKEN is the indicated KEYWORD. */
static bool
"explicit",
"friend",
"typedef",
+ "using",
"constexpr",
"__complex",
"__thread"
error ("a call to a constructor "
"cannot appear in a constant-expression");
return true;
+ case NIC_TRANSACTION:
+ error ("a transaction expression "
+ "cannot appear in a constant-expression");
+ return true;
case NIC_THIS:
msg = "this";
break;
The user should have said "typename A<T>::X". */
if (cxx_dialect < cxx0x && id == ridpointers[(int)RID_CONSTEXPR])
- inform (location, "C++0x %<constexpr%> only available with "
- "-std=c++0x or -std=gnu++0x");
+ inform (location, "C++11 %<constexpr%> only available with "
+ "-std=c++11 or -std=gnu++11");
else if (processing_template_decl && current_class_type
&& TYPE_BINFO (current_class_type))
{
struct obstack str_ob;
cpp_string str, istr, *strs;
cp_token *tok;
- enum cpp_ttype type;
+ enum cpp_ttype type, curr_type;
+ int have_suffix_p = 0;
+ tree string_tree;
+ tree suffix_id = NULL_TREE;
+ bool curr_tok_is_userdef_p = false;
tok = cp_lexer_peek_token (parser->lexer);
if (!cp_parser_is_string_literal (tok))
return error_mark_node;
}
- type = tok->type;
+ if (cpp_userdef_string_p (tok->type))
+ {
+ string_tree = USERDEF_LITERAL_VALUE (tok->u.value);
+ curr_type = cpp_userdef_string_remove_type (tok->type);
+ curr_tok_is_userdef_p = true;
+ }
+ else
+ {
+ string_tree = tok->u.value;
+ curr_type = tok->type;
+ }
+ type = curr_type;
/* Try to avoid the overhead of creating and destroying an obstack
for the common case of just one string. */
{
cp_lexer_consume_token (parser->lexer);
- str.text = (const unsigned char *)TREE_STRING_POINTER (tok->u.value);
- str.len = TREE_STRING_LENGTH (tok->u.value);
+ str.text = (const unsigned char *)TREE_STRING_POINTER (string_tree);
+ str.len = TREE_STRING_LENGTH (string_tree);
count = 1;
+ if (curr_tok_is_userdef_p)
+ {
+ suffix_id = USERDEF_LITERAL_SUFFIX_ID (tok->u.value);
+ have_suffix_p = 1;
+ curr_type = cpp_userdef_string_remove_type (tok->type);
+ }
+ else
+ curr_type = tok->type;
+
strs = &str;
}
else
{
cp_lexer_consume_token (parser->lexer);
count++;
- str.text = (const unsigned char *)TREE_STRING_POINTER (tok->u.value);
- str.len = TREE_STRING_LENGTH (tok->u.value);
+ str.text = (const unsigned char *)TREE_STRING_POINTER (string_tree);
+ str.len = TREE_STRING_LENGTH (string_tree);
+
+ if (curr_tok_is_userdef_p)
+ {
+ tree curr_suffix_id = USERDEF_LITERAL_SUFFIX_ID (tok->u.value);
+ if (have_suffix_p == 0)
+ {
+ suffix_id = curr_suffix_id;
+ have_suffix_p = 1;
+ }
+ else if (have_suffix_p == 1
+ && curr_suffix_id != suffix_id)
+ {
+ error ("inconsistent user-defined literal suffixes"
+ " %qD and %qD in string literal",
+ suffix_id, curr_suffix_id);
+ have_suffix_p = -1;
+ }
+ curr_type = cpp_userdef_string_remove_type (tok->type);
+ }
+ else
+ curr_type = tok->type;
- if (type != tok->type)
+ if (type != curr_type)
{
if (type == CPP_STRING)
- type = tok->type;
- else if (tok->type != CPP_STRING)
+ type = curr_type;
+ else if (curr_type != CPP_STRING)
error_at (tok->location,
"unsupported non-standard concatenation "
"of string literals");
obstack_grow (&str_ob, &str, sizeof (cpp_string));
tok = cp_lexer_peek_token (parser->lexer);
+ if (cpp_userdef_string_p (tok->type))
+ {
+ string_tree = USERDEF_LITERAL_VALUE (tok->u.value);
+ curr_type = cpp_userdef_string_remove_type (tok->type);
+ curr_tok_is_userdef_p = true;
+ }
+ else
+ {
+ string_tree = tok->u.value;
+ curr_type = tok->type;
+ curr_tok_is_userdef_p = false;
+ }
}
while (cp_parser_is_string_literal (tok));
}
value = fix_string_type (value);
+
+ if (have_suffix_p)
+ {
+ tree literal = build_userdef_literal (suffix_id, value, NULL_TREE);
+ tok->u.value = literal;
+ return cp_parser_userdef_string_literal (tok);
+ }
}
else
/* cpp_interpret_string has issued an error. */
return value;
}
+/* Look up a literal operator with the name and the exact arguments. */
+
+static tree
+lookup_literal_operator (tree name, VEC(tree,gc) *args)
+{
+ tree decl, fns;
+ decl = lookup_name (name);
+ if (!decl || !is_overloaded_fn (decl))
+ return error_mark_node;
+
+ for (fns = decl; fns; fns = OVL_NEXT (fns))
+ {
+ unsigned int ix;
+ bool found = true;
+ tree fn = OVL_CURRENT (fns);
+ tree argtypes = NULL_TREE;
+ argtypes = TYPE_ARG_TYPES (TREE_TYPE (fn));
+ if (argtypes != NULL_TREE)
+ {
+ for (ix = 0; ix < VEC_length (tree, args) && argtypes != NULL_TREE;
+ ++ix, argtypes = TREE_CHAIN (argtypes))
+ {
+ tree targ = TREE_VALUE (argtypes);
+ tree tparm = TREE_TYPE (VEC_index (tree, args, ix));
+ bool ptr = TREE_CODE (targ) == POINTER_TYPE;
+ bool arr = TREE_CODE (tparm) == ARRAY_TYPE;
+ if ((ptr || arr || !same_type_p (targ, tparm))
+ && (!ptr || !arr
+ || !same_type_p (TREE_TYPE (targ),
+ TREE_TYPE (tparm))))
+ found = false;
+ }
+ if (found
+ && ix == VEC_length (tree, args)
+ /* May be this should be sufficient_parms_p instead,
+ depending on how exactly should user-defined literals
+ work in presence of default arguments on the literal
+ operator parameters. */
+ && argtypes == void_list_node)
+ return fn;
+ }
+ }
+
+ return error_mark_node;
+}
+
+/* Parse a user-defined char constant. Returns a call to a user-defined
+ literal operator taking the character as an argument. */
+
+static tree
+cp_parser_userdef_char_literal (cp_parser *parser)
+{
+ cp_token *token = cp_lexer_consume_token (parser->lexer);
+ tree literal = token->u.value;
+ tree suffix_id = USERDEF_LITERAL_SUFFIX_ID (literal);
+ tree value = USERDEF_LITERAL_VALUE (literal);
+ tree name = cp_literal_operator_id (IDENTIFIER_POINTER (suffix_id));
+ tree decl, result;
+
+ /* Build up a call to the user-defined operator */
+ /* Lookup the name we got back from the id-expression. */
+ VEC(tree,gc) *args = make_tree_vector ();
+ VEC_safe_push (tree, gc, args, value);
+ decl = lookup_literal_operator (name, args);
+ if (!decl || decl == error_mark_node)
+ {
+ error ("unable to find character literal operator %qD with %qT argument",
+ name, TREE_TYPE (value));
+ release_tree_vector (args);
+ return error_mark_node;
+ }
+ result = finish_call_expr (decl, &args, false, true, tf_warning_or_error);
+ release_tree_vector (args);
+ if (result != error_mark_node)
+ return result;
+
+ error ("unable to find character literal operator %qD with %qT argument",
+ name, TREE_TYPE (value));
+ return error_mark_node;
+}
+
+/* A subroutine of cp_parser_userdef_numeric_literal to
+ create a char... template parameter pack from a string node. */
+
+static tree
+make_char_string_pack (tree value)
+{
+ tree charvec;
+ tree argpack = make_node (NONTYPE_ARGUMENT_PACK);
+ const char *str = TREE_STRING_POINTER (value);
+ int i, len = TREE_STRING_LENGTH (value) - 1;
+ tree argvec = make_tree_vec (1);
+
+ /* Fill in CHARVEC with all of the parameters. */
+ charvec = make_tree_vec (len);
+ for (i = 0; i < len; ++i)
+ TREE_VEC_ELT (charvec, i) = build_int_cst (char_type_node, str[i]);
+
+ /* Build the argument packs. */
+ SET_ARGUMENT_PACK_ARGS (argpack, charvec);
+ TREE_TYPE (argpack) = char_type_node;
+
+ TREE_VEC_ELT (argvec, 0) = argpack;
+
+ return argvec;
+}
+
+/* Parse a user-defined numeric constant. returns a call to a user-defined
+ literal operator. */
+
+static tree
+cp_parser_userdef_numeric_literal (cp_parser *parser)
+{
+ cp_token *token = cp_lexer_consume_token (parser->lexer);
+ tree literal = token->u.value;
+ tree suffix_id = USERDEF_LITERAL_SUFFIX_ID (literal);
+ tree value = USERDEF_LITERAL_VALUE (literal);
+ tree num_string = USERDEF_LITERAL_NUM_STRING (literal);
+ tree name = cp_literal_operator_id (IDENTIFIER_POINTER (suffix_id));
+ tree decl, result;
+ VEC(tree,gc) *args;
+
+ /* Look for a literal operator taking the exact type of numeric argument
+ as the literal value. */
+ args = make_tree_vector ();
+ VEC_safe_push (tree, gc, args, value);
+ decl = lookup_literal_operator (name, args);
+ if (decl && decl != error_mark_node)
+ {
+ result = finish_call_expr (decl, &args, false, true, tf_none);
+ if (result != error_mark_node)
+ {
+ release_tree_vector (args);
+ return result;
+ }
+ }
+ release_tree_vector (args);
+
+ /* If the numeric argument didn't work, look for a raw literal
+ operator taking a const char* argument consisting of the number
+ in string format. */
+ args = make_tree_vector ();
+ VEC_safe_push (tree, gc, args, num_string);
+ decl = lookup_literal_operator (name, args);
+ if (decl && decl != error_mark_node)
+ {
+ result = finish_call_expr (decl, &args, false, true, tf_none);
+ if (result != error_mark_node)
+ {
+ release_tree_vector (args);
+ return result;
+ }
+ }
+ release_tree_vector (args);
+
+ /* If the raw literal didn't work, look for a non-type template
+ function with parameter pack char.... Call the function with
+ template parameter characters representing the number. */
+ args = make_tree_vector ();
+ decl = lookup_literal_operator (name, args);
+ if (decl && decl != error_mark_node)
+ {
+ tree tmpl_args = make_char_string_pack (num_string);
+ decl = lookup_template_function (decl, tmpl_args);
+ result = finish_call_expr (decl, &args, false, true, tf_none);
+ if (result != error_mark_node)
+ {
+ release_tree_vector (args);
+ return result;
+ }
+ }
+ release_tree_vector (args);
+
+ error ("unable to find numeric literal operator %qD", name);
+ return error_mark_node;
+}
+
+/* Parse a user-defined string constant. Returns a call to a user-defined
+ literal operator taking a character pointer and the length of the string
+ as arguments. */
+
+static tree
+cp_parser_userdef_string_literal (cp_token *token)
+{
+ tree literal = token->u.value;
+ tree suffix_id = USERDEF_LITERAL_SUFFIX_ID (literal);
+ tree name = cp_literal_operator_id (IDENTIFIER_POINTER (suffix_id));
+ tree value = USERDEF_LITERAL_VALUE (literal);
+ int len = TREE_STRING_LENGTH (value)
+ / TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (TREE_TYPE (value)))) - 1;
+ tree decl, result;
+
+ /* Build up a call to the user-defined operator */
+ /* Lookup the name we got back from the id-expression. */
+ VEC(tree,gc) *args = make_tree_vector ();
+ VEC_safe_push (tree, gc, args, value);
+ VEC_safe_push (tree, gc, args, build_int_cst (size_type_node, len));
+ decl = lookup_name (name);
+ if (!decl || decl == error_mark_node)
+ {
+ error ("unable to find string literal operator %qD", name);
+ release_tree_vector (args);
+ return error_mark_node;
+ }
+ result = finish_call_expr (decl, &args, false, true, tf_none);
+ release_tree_vector (args);
+ if (result != error_mark_node)
+ return result;
+
+ error ("unable to find string literal operator %qD with %qT, %qT arguments",
+ name, TREE_TYPE (value), size_type_node);
+ return error_mark_node;
+}
+
/* Basic concepts [gram.basic] */
__is_convertible_to ( type-id , type-id )
__is_empty ( type-id )
__is_enum ( type-id )
+ __is_final ( type-id )
__is_literal_type ( type-id )
__is_pod ( type-id )
__is_polymorphic ( type-id )
character-literal
floating-literal
string-literal
- boolean-literal */
+ boolean-literal
+ pointer-literal
+ user-defined-literal */
case CPP_CHAR:
case CPP_CHAR16:
case CPP_CHAR32:
case CPP_WCHAR:
case CPP_NUMBER:
+ if (TREE_CODE (token->u.value) == USERDEF_LITERAL)
+ return cp_parser_userdef_numeric_literal (parser);
token = cp_lexer_consume_token (parser->lexer);
if (TREE_CODE (token->u.value) == FIXED_CST)
{
}
return token->u.value;
+ case CPP_CHAR_USERDEF:
+ case CPP_CHAR16_USERDEF:
+ case CPP_CHAR32_USERDEF:
+ case CPP_WCHAR_USERDEF:
+ return cp_parser_userdef_char_literal (parser);
+
case CPP_STRING:
case CPP_STRING16:
case CPP_STRING32:
case CPP_WSTRING:
case CPP_UTF8STRING:
+ case CPP_STRING_USERDEF:
+ case CPP_STRING16_USERDEF:
+ case CPP_STRING32_USERDEF:
+ case CPP_WSTRING_USERDEF:
+ case CPP_UTF8STRING_USERDEF:
/* ??? Should wide strings be allowed when parser->translate_strings_p
is false (i.e. in attributes)? If not, we can kill the third
argument to cp_parser_string_literal. */
case RID_IS_CONVERTIBLE_TO:
case RID_IS_EMPTY:
case RID_IS_ENUM:
+ case RID_IS_FINAL:
case RID_IS_LITERAL_TYPE:
case RID_IS_POD:
case RID_IS_POLYMORPHIC:
/* If that didn't work, try a conversion-function-id. */
if (!cp_parser_parse_definitely (parser))
id = cp_parser_conversion_function_id (parser);
+ else if (UDLIT_OPER_P (id))
+ {
+ /* 17.6.3.3.5 */
+ const char *name = UDLIT_OP_SUFFIX (id);
+ if (name[0] != '_' && !in_system_header)
+ warning (0, "literal operator suffixes not preceded by %<_%>"
+ " are reserved for future standardization");
+ }
return id;
}
/* A template-id can start a nested-name-specifier. */
else if (token->type == CPP_TEMPLATE_ID)
;
+ /* DR 743: decltype can be used in a nested-name-specifier. */
+ else if (token_is_decltype (token))
+ ;
else
{
/* If the next token is not an identifier, then it is
class-or-namespace-name. */
parser->scope = old_scope;
parser->qualifying_scope = saved_qualifying_scope;
+
+ /* If the next token is a decltype, and the one after that is a
+ `::', then the decltype has failed to resolve to a class or
+ enumeration type. Give this error even when parsing
+ tentatively since it can't possibly be valid--and we're going
+ to replace it with a CPP_NESTED_NAME_SPECIFIER below, so we
+ won't get another chance.*/
+ if (cp_lexer_next_token_is (parser->lexer, CPP_DECLTYPE)
+ && (cp_lexer_peek_nth_token (parser->lexer, 2)->type
+ == CPP_SCOPE))
+ {
+ token = cp_lexer_consume_token (parser->lexer);
+ error_at (token->location, "decltype evaluates to %qT, "
+ "which is not a class or enumeration type",
+ token->u.value);
+ parser->scope = error_mark_node;
+ error_p = true;
+ /* As below. */
+ success = true;
+ cp_lexer_consume_token (parser->lexer);
+ }
+
if (cp_parser_uncommitted_to_tentative_parse_p (parser))
break;
/* If the next token is an identifier, and the one after
&& (TREE_CODE (TYPENAME_TYPE_FULLNAME (new_scope))
== TEMPLATE_ID_EXPR)))
permerror (input_location, TYPE_P (new_scope)
- ? "%qT is not a template"
- : "%qD is not a template",
+ ? G_("%qT is not a template")
+ : G_("%qD is not a template"),
new_scope);
/* If it is a class scope, try to complete it; we are about to
be looking up names inside the class. */
this is either a class-name or a namespace-name (which corresponds
to the class-or-namespace-name production in the grammar). For
C++0x, it can also be a type-name that refers to an enumeration
- type.
+ type or a simple-template-id.
TYPENAME_KEYWORD_P is TRUE iff the `typename' keyword is in effect.
TEMPLATE_KEYWORD_P is TRUE iff the `template' keyword is in effect.
bool only_class_p;
bool successful_parse_p;
+ /* DR 743: decltype can appear in a nested-name-specifier. */
+ if (cp_lexer_next_token_is_decltype (parser->lexer))
+ {
+ scope = cp_parser_decltype (parser);
+ if (TREE_CODE (scope) != ENUMERAL_TYPE
+ && !MAYBE_CLASS_TYPE_P (scope))
+ {
+ cp_parser_simulate_error (parser);
+ return error_mark_node;
+ }
+ if (TYPE_NAME (scope))
+ scope = TYPE_NAME (scope);
+ return scope;
+ }
+
/* Before we try to parse the class-name, we must save away the
current PARSER->SCOPE since cp_parser_class_name will destroy
it. */
/* Parse tentatively. */
cp_parser_parse_tentatively (parser);
- /* Parse a typedef-name or enum-name. */
- scope = cp_parser_nonclass_name (parser);
+ /* Parse a type-name */
+ scope = cp_parser_type_name (parser);
/* "If the name found does not designate a namespace or a class,
enumeration, or dependent type, the program is ill-formed."
/* Restore the saved message. */
parser->type_definition_forbidden_message = saved_message;
/* `typeid' may not appear in an integral constant expression. */
- if (cp_parser_non_integral_constant_expression(parser, NIC_TYPEID))
+ if (cp_parser_non_integral_constant_expression (parser, NIC_TYPEID))
return error_mark_node;
}
break;
by cp_parser_builtin_offsetof. We're looking for
postfix-expression [ expression ]
+ postfix-expression [ braced-init-list ] (C++11)
FOR_OFFSETOF is set if we're being called in that context, which
changes how we deal with integer constant expressions. */
if (for_offsetof)
index = cp_parser_constant_expression (parser, false, NULL);
else
- index = cp_parser_expression (parser, /*cast_p=*/false, NULL);
+ {
+ if (cp_lexer_next_token_is (parser->lexer, CPP_OPEN_BRACE))
+ {
+ bool expr_nonconst_p;
+ maybe_warn_cpp0x (CPP0X_INITIALIZER_LISTS);
+ index = cp_parser_braced_list (parser, &expr_nonconst_p);
+ }
+ else
+ index = cp_parser_expression (parser, /*cast_p=*/false, NULL);
+ }
/* Look for the closing `]'. */
cp_parser_require (parser, CPP_CLOSE_SQUARE, RT_CLOSE_SQUARE);
postfix_expression);
scope = NULL_TREE;
}
- else
+ /* Unlike the object expression in other contexts, *this is not
+ required to be of complete type for purposes of class member
+ access (5.2.5) outside the member function body. */
+ else if (scope != current_class_ref
+ && !(processing_template_decl && scope == current_class_type))
scope = complete_type_or_else (scope, NULL_TREE);
/* Let the name lookup machinery know that we are processing a
class member access expression. */
{
if (name != error_mark_node && !BASELINK_P (name) && parser->scope)
{
- name = build_qualified_name (/*type=*/NULL_TREE,
- parser->scope,
- name,
- template_p);
+ if (TREE_CODE (parser->scope) == NAMESPACE_DECL)
+ {
+ error_at (token->location, "%<%D::%D%> is not a class member",
+ parser->scope, name);
+ postfix_expression = error_mark_node;
+ }
+ else
+ name = build_qualified_name (/*type=*/NULL_TREE,
+ parser->scope,
+ name,
+ template_p);
parser->scope = NULL_TREE;
parser->qualifying_scope = NULL_TREE;
parser->object_scope = NULL_TREE;
}
- if (scope && name && BASELINK_P (name))
+ if (parser->scope && name && BASELINK_P (name))
adjust_result_of_qualified_name_lookup
- (name, BINFO_TYPE (BASELINK_ACCESS_BINFO (name)), scope);
+ (name, parser->scope, scope);
postfix_expression
= finish_class_member_access_expr (postfix_expression, name,
template_p,
}
break;
+ case RID_TRANSACTION_ATOMIC:
+ case RID_TRANSACTION_RELAXED:
+ return cp_parser_transaction_expression (parser, keyword);
+
case RID_NOEXCEPT:
{
tree expr;
if (cp_lexer_next_token_is (parser->lexer, CPP_OPEN_PAREN))
{
cp_token *token;
+ const char *saved_message = parser->type_definition_forbidden_message;
+
/* Consume the `('. */
cp_lexer_consume_token (parser->lexer);
+
/* Parse the type-id. */
+ parser->type_definition_forbidden_message
+ = G_("types may not be defined in a new-expression");
type = cp_parser_type_id (parser);
+ parser->type_definition_forbidden_message = saved_message;
+
/* Look for the closing `)'. */
cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN);
token = cp_lexer_peek_token (parser->lexer);
lhs = cp_parser_cast_expression (parser, /*address_p=*/false, cast_p, pidk);
lhs_type = ERROR_MARK;
+ if (cp_parser_error_occurred (parser))
+ return error_mark_node;
+
for (;;)
{
/* Get an operator token. */
&& !parser->greater_than_is_operator_p)
{
if (warning_at (token->location, OPT_Wc__0x_compat,
- "%<>>%> operator will be treated as"
- " two right angle brackets in C++0x"))
+ "%<>>%> operator is treated as"
+ " two right angle brackets in C++11"))
inform (token->location,
"suggest parentheses around %<>>%> expression");
}
case RID_IS_ENUM:
kind = CPTK_IS_ENUM;
break;
+ case RID_IS_FINAL:
+ kind = CPTK_IS_FINAL;
+ break;
case RID_IS_LITERAL_TYPE:
kind = CPTK_IS_LITERAL_TYPE;
break;
case RID_UNDERLYING_TYPE:
kind = CPTK_UNDERLYING_TYPE;
break;
+ case RID_BASES:
+ kind = CPTK_BASES;
+ break;
+ case RID_DIRECT_BASES:
+ kind = CPTK_DIRECT_BASES;
+ break;
default:
gcc_unreachable ();
}
/* Complete the trait expression, which may mean either processing
the trait expr now or saving it for template instantiation. */
- return kind != CPTK_UNDERLYING_TYPE
- ? finish_trait_expr (kind, type1, type2)
- : finish_underlying_type (type1);
+ switch(kind)
+ {
+ case CPTK_UNDERLYING_TYPE:
+ return finish_underlying_type (type1);
+ case CPTK_BASES:
+ return finish_bases (type1, false);
+ case CPTK_DIRECT_BASES:
+ return finish_bases (type1, true);
+ default:
+ return finish_trait_expr (kind, type1, type2);
+ }
}
/* Lambdas that appear in variable initializer or default argument scope
cp_parser_lambda_introducer (parser, lambda_expr);
type = begin_lambda_type (lambda_expr);
+ if (type == error_mark_node)
+ return error_mark_node;
record_lambda_scope (lambda_expr);
/* Inside the class, surrounding template-parameter-lists do not apply. */
unsigned int saved_num_template_parameter_lists
= parser->num_template_parameter_lists;
+ unsigned char in_statement = parser->in_statement;
+ bool in_switch_statement_p = parser->in_switch_statement_p;
parser->num_template_parameter_lists = 0;
+ parser->in_statement = 0;
+ parser->in_switch_statement_p = false;
/* By virtue of defining a local class, a lambda expression has access to
the private variables of enclosing classes. */
for (elt = LAMBDA_EXPR_CAPTURE_LIST (lambda_expr);
elt; elt = next)
{
- tree field = TREE_PURPOSE (elt);
- char *buf;
-
next = TREE_CHAIN (elt);
TREE_CHAIN (elt) = newlist;
newlist = elt;
-
- /* Also add __ to the beginning of the field name so that code
- outside the lambda body can't see the captured name. We could
- just remove the name entirely, but this is more useful for
- debugging. */
- if (field == LAMBDA_EXPR_THIS_CAPTURE (lambda_expr))
- /* The 'this' capture already starts with __. */
- continue;
-
- buf = (char *) alloca (IDENTIFIER_LENGTH (DECL_NAME (field)) + 3);
- buf[1] = buf[0] = '_';
- memcpy (buf + 2, IDENTIFIER_POINTER (DECL_NAME (field)),
- IDENTIFIER_LENGTH (DECL_NAME (field)) + 1);
- DECL_NAME (field) = get_identifier (buf);
}
LAMBDA_EXPR_CAPTURE_LIST (lambda_expr) = newlist;
}
type = finish_struct (type, /*attributes=*/NULL_TREE);
parser->num_template_parameter_lists = saved_num_template_parameter_lists;
+ parser->in_statement = in_statement;
+ parser->in_switch_statement_p = in_switch_statement_p;
}
pop_deferring_access_checks ();
/* This field is only used during parsing of the lambda. */
LAMBDA_EXPR_THIS_CAPTURE (lambda_expr) = NULL_TREE;
+ /* This lambda shouldn't have any proxies left at this point. */
+ gcc_assert (LAMBDA_EXPR_PENDING_PROXIES (lambda_expr) == NULL);
+ /* And now that we're done, push proxies for an enclosing lambda. */
+ insert_pending_capture_proxies ();
+
if (ok)
return build_lambda_object (lambda_expr);
else
/* Possibly capture `this'. */
if (cp_lexer_next_token_is_keyword (parser->lexer, RID_THIS))
{
+ location_t loc = cp_lexer_peek_token (parser->lexer)->location;
+ if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) == CPLD_COPY)
+ pedwarn (loc, 0, "explicit by-copy capture of %<this%> redundant "
+ "with by-copy capture default");
cp_lexer_consume_token (parser->lexer);
add_capture (lambda_expr,
- /*id=*/get_identifier ("__this"),
+ /*id=*/this_identifier,
/*initializer=*/finish_this_expr(),
/*by_reference_p=*/false,
explicit_init_p);
/*ambiguous_decls=*/NULL,
capture_token->location);
+ if (capture_init_expr == error_mark_node)
+ {
+ unqualified_name_lookup_error (capture_id);
+ continue;
+ }
+ else if (DECL_P (capture_init_expr)
+ && (TREE_CODE (capture_init_expr) != VAR_DECL
+ && TREE_CODE (capture_init_expr) != PARM_DECL))
+ {
+ error_at (capture_token->location,
+ "capture of non-variable %qD ",
+ capture_init_expr);
+ inform (0, "%q+#D declared here", capture_init_expr);
+ continue;
+ }
+ if (TREE_CODE (capture_init_expr) == VAR_DECL
+ && decl_storage_duration (capture_init_expr) != dk_auto)
+ {
+ pedwarn (capture_token->location, 0, "capture of variable "
+ "%qD with non-automatic storage duration",
+ capture_init_expr);
+ inform (0, "%q+#D declared here", capture_init_expr);
+ continue;
+ }
+
capture_init_expr
= finish_id_expression
(capture_id,
capture_token->location);
}
- if (TREE_CODE (capture_init_expr) == IDENTIFIER_NODE)
- capture_init_expr
- = unqualified_name_lookup_error (capture_init_expr);
+ if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) != CPLD_NONE
+ && !explicit_init_p)
+ {
+ if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) == CPLD_COPY
+ && capture_kind == BY_COPY)
+ pedwarn (capture_token->location, 0, "explicit by-copy capture "
+ "of %qD redundant with by-copy capture default",
+ capture_id);
+ if (LAMBDA_EXPR_DEFAULT_CAPTURE_MODE (lambda_expr) == CPLD_REFERENCE
+ && capture_kind == BY_REFERENCE)
+ pedwarn (capture_token->location, 0, "explicit by-reference "
+ "capture of %qD redundant with by-reference capture "
+ "default", capture_id);
+ }
add_capture (lambda_expr,
capture_id,
{
DECL_INITIALIZED_IN_CLASS_P (fco) = 1;
DECL_ARTIFICIAL (fco) = 1;
+ /* Give the object parameter a different name. */
+ DECL_NAME (DECL_ARGUMENTS (fco)) = get_identifier ("__closure");
}
finish_member_declaration (fco);
cp_parser_lambda_body (cp_parser* parser, tree lambda_expr)
{
bool nested = (current_function_decl != NULL_TREE);
+ bool local_variables_forbidden_p = parser->local_variables_forbidden_p;
if (nested)
push_function_context ();
+ else
+ /* Still increment function_depth so that we don't GC in the
+ middle of an expression. */
+ ++function_depth;
+ /* Clear this in case we're in the middle of a default argument. */
+ parser->local_variables_forbidden_p = false;
/* Finish the function call operator
- class_specifier
tree body;
bool done = false;
tree compound_stmt;
+ tree cap;
/* Let the front end know that we are going to be defining this
function. */
if (!cp_parser_require (parser, CPP_OPEN_BRACE, RT_OPEN_BRACE))
goto out;
+ /* Push the proxies for any explicit captures. */
+ for (cap = LAMBDA_EXPR_CAPTURE_LIST (lambda_expr); cap;
+ cap = TREE_CHAIN (cap))
+ build_capture_proxy (TREE_PURPOSE (cap));
+
compound_stmt = begin_compound_stmt (0);
/* 5.1.1.4 of the standard says:
expand_or_defer_fn (finish_function (/*inline*/2));
}
+ parser->local_variables_forbidden_p = local_variables_forbidden_p;
if (nested)
pop_function_context();
+ else
+ --function_depth;
}
/* Statements [gram.stmt.stmt] */
declaration-statement
try-block
+ TM Extension:
+
+ statement:
+ atomic-statement
+
IN_COMPOUND is true when the statement is nested inside a
cp_parser_compound_statement; this matters for certain pragmas.
cp_parser_declaration_statement (parser);
return;
+ case RID_TRANSACTION_ATOMIC:
+ case RID_TRANSACTION_RELAXED:
+ statement = cp_parser_transaction (parser, keyword);
+ break;
+ case RID_TRANSACTION_CANCEL:
+ statement = cp_parser_transaction_cancel (parser);
+ break;
+
default:
/* It might be a keyword like `int' that can start a
declaration-statement. */
at instantiation. If not, it is done just ahead. */
if (processing_template_decl)
{
+ if (check_for_bare_parameter_packs (range_expr))
+ range_expr = error_mark_node;
stmt = begin_range_for_stmt (scope, init);
finish_range_for_decl (stmt, range_decl, range_expr);
+ if (!type_dependent_expression_p (range_expr)
+ /* do_auto_deduction doesn't mess with template init-lists. */
+ && !BRACE_ENCLOSED_INITIALIZER_P (range_expr))
+ do_range_for_auto_deduction (range_decl, range_expr);
}
else
{
return stmt;
}
+/* Subroutine of cp_convert_range_for: given the initializer expression,
+ builds up the range temporary. */
+
+static tree
+build_range_temp (tree range_expr)
+{
+ tree range_type, range_temp;
+
+ /* Find out the type deduced by the declaration
+ `auto &&__range = range_expr'. */
+ range_type = cp_build_reference_type (make_auto (), true);
+ range_type = do_auto_deduction (range_type, range_expr,
+ type_uses_auto (range_type));
+
+ /* Create the __range variable. */
+ range_temp = build_decl (input_location, VAR_DECL,
+ get_identifier ("__for_range"), range_type);
+ TREE_USED (range_temp) = 1;
+ DECL_ARTIFICIAL (range_temp) = 1;
+
+ return range_temp;
+}
+
+/* Used by cp_parser_range_for in template context: we aren't going to
+ do a full conversion yet, but we still need to resolve auto in the
+ type of the for-range-declaration if present. This is basically
+ a shortcut version of cp_convert_range_for. */
+
+static void
+do_range_for_auto_deduction (tree decl, tree range_expr)
+{
+ tree auto_node = type_uses_auto (TREE_TYPE (decl));
+ if (auto_node)
+ {
+ tree begin_dummy, end_dummy, range_temp, iter_type, iter_decl;
+ range_temp = convert_from_reference (build_range_temp (range_expr));
+ iter_type = (cp_parser_perform_range_for_lookup
+ (range_temp, &begin_dummy, &end_dummy));
+ iter_decl = build_decl (input_location, VAR_DECL, NULL_TREE, iter_type);
+ iter_decl = build_x_indirect_ref (iter_decl, RO_NULL,
+ tf_warning_or_error);
+ TREE_TYPE (decl) = do_auto_deduction (TREE_TYPE (decl),
+ iter_decl, auto_node);
+ }
+}
+
/* Converts a range-based for-statement into a normal
for-statement, as per the definition.
tree
cp_convert_range_for (tree statement, tree range_decl, tree range_expr)
{
- tree range_type, range_temp;
tree begin, end;
tree iter_type, begin_expr, end_expr;
tree condition, expression;
begin_expr = end_expr = iter_type = error_mark_node;
else
{
- /* Find out the type deduced by the declaration
- `auto &&__range = range_expr'. */
- range_type = cp_build_reference_type (make_auto (), true);
- range_type = do_auto_deduction (range_type, range_expr,
- type_uses_auto (range_type));
-
- /* Create the __range variable. */
- range_temp = build_decl (input_location, VAR_DECL,
- get_identifier ("__for_range"), range_type);
- TREE_USED (range_temp) = 1;
- DECL_ARTIFICIAL (range_temp) = 1;
+ tree range_temp = build_range_temp (range_expr);
pushdecl (range_temp);
cp_finish_decl (range_temp, range_expr,
/*is_constant_init*/false, NULL_TREE,
static tree
cp_parser_perform_range_for_lookup (tree range, tree *begin, tree *end)
{
+ if (error_operand_p (range))
+ {
+ *begin = *end = error_mark_node;
+ return error_mark_node;
+ }
+
if (!COMPLETE_TYPE_P (complete_type (TREE_TYPE (range))))
{
error ("range-based %<for%> expression of type %qT "
id_begin = get_identifier ("begin");
id_end = get_identifier ("end");
member_begin = lookup_member (TREE_TYPE (range), id_begin,
- /*protect=*/2, /*want_type=*/false);
+ /*protect=*/2, /*want_type=*/false,
+ tf_warning_or_error);
member_end = lookup_member (TREE_TYPE (range), id_end,
- /*protect=*/2, /*want_type=*/false);
+ /*protect=*/2, /*want_type=*/false,
+ tf_warning_or_error);
if (member_begin != NULL_TREE || member_end != NULL_TREE)
{
/* If the next token is `extern' and the following token is a string
literal, then we have a linkage specification. */
if (token1.keyword == RID_EXTERN
- && cp_parser_is_string_literal (&token2))
+ && cp_parser_is_pure_string_literal (&token2))
cp_parser_linkage_specification (parser);
/* If the next token is `template', then we have either a template
declaration, an explicit instantiation, or an explicit
namespace-alias-definition. */
else if (token1->keyword == RID_NAMESPACE)
cp_parser_namespace_alias_definition (parser);
- /* If the next keyword is `using', we have either a
- using-declaration or a using-directive. */
+ /* If the next keyword is `using', we have a
+ using-declaration, a using-directive, or an alias-declaration. */
else if (token1->keyword == RID_USING)
{
cp_token *token2;
token2 = cp_lexer_peek_nth_token (parser->lexer, 2);
if (token2->keyword == RID_NAMESPACE)
cp_parser_using_directive (parser);
+ /* If the second token after 'using' is '=', then we have an
+ alias-declaration. */
+ else if (cxx_dialect >= cxx0x
+ && token2->type == CPP_NAME
+ && ((cp_lexer_peek_nth_token (parser->lexer, 3)->type == CPP_EQ)
+ || (cp_lexer_peek_nth_token (parser->lexer, 3)->keyword
+ == RID_ATTRIBUTE)))
+ cp_parser_alias_declaration (parser);
/* Otherwise, it's a using-declaration. */
else
cp_parser_using_declaration (parser,
/* Complain about `auto' as a storage specifier, if
we're complaining about C++0x compatibility. */
warning_at (token->location, OPT_Wc__0x_compat, "%<auto%>"
- " will change meaning in C++0x; please remove it");
+ " changes meaning in C++11; please remove it");
/* Set the storage class anyway. */
cp_parser_set_storage_class (parser, decl_specs, RID_AUTO,
bool saved_integral_constant_expression_p;
bool saved_non_integral_constant_expression_p;
cp_token *id_expr_start_token;
+ cp_token *start_token = cp_lexer_peek_token (parser->lexer);
+
+ if (start_token->type == CPP_DECLTYPE)
+ {
+ /* Already parsed. */
+ cp_lexer_consume_token (parser->lexer);
+ return start_token->u.value;
+ }
/* Look for the `decltype' token. */
if (!cp_parser_require_keyword (parser, RID_DECLTYPE, RT_DECLTYPE))
parser->non_integral_constant_expression_p
= saved_non_integral_constant_expression_p;
- if (expr == error_mark_node)
- {
- /* Skip everything up to the closing `)'. */
- cp_parser_skip_to_closing_parenthesis (parser, true, false,
- /*consume_paren=*/true);
- return error_mark_node;
- }
-
/* Parse to the closing `)'. */
if (!cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN))
{
return error_mark_node;
}
- return finish_decltype_type (expr, id_expression_or_member_access_p,
+ expr = finish_decltype_type (expr, id_expression_or_member_access_p,
tf_warning_or_error);
+
+ /* Replace the decltype with a CPP_DECLTYPE so we don't need to parse
+ it again. */
+ start_token->type = CPP_DECLTYPE;
+ start_token->u.value = expr;
+ start_token->keyword = RID_MAX;
+ cp_lexer_purge_tokens_after (parser->lexer, start_token);
+
+ return expr;
}
/* Special member functions [gram.special] */
cp_parser_mem_initializer_list (cp_parser* parser)
{
tree mem_initializer_list = NULL_TREE;
+ tree target_ctor = error_mark_node;
cp_token *token = cp_lexer_peek_token (parser->lexer);
/* Let the semantic analysis code know that we are starting the
if (mem_initializer != error_mark_node)
mem_initializer = make_pack_expansion (mem_initializer);
}
+ if (target_ctor != error_mark_node
+ && mem_initializer != error_mark_node)
+ {
+ error ("mem-initializer for %qD follows constructor delegation",
+ TREE_PURPOSE (mem_initializer));
+ mem_initializer = error_mark_node;
+ }
+ /* Look for a target constructor. */
+ if (mem_initializer != error_mark_node
+ && TYPE_P (TREE_PURPOSE (mem_initializer))
+ && same_type_p (TREE_PURPOSE (mem_initializer), current_class_type))
+ {
+ maybe_warn_cpp0x (CPP0X_DELEGATING_CTORS);
+ if (mem_initializer_list)
+ {
+ error ("constructor delegation follows mem-initializer for %qD",
+ TREE_PURPOSE (mem_initializer_list));
+ mem_initializer = error_mark_node;
+ }
+ target_ctor = mem_initializer;
+ }
/* Add it to the list, unless it was erroneous. */
if (mem_initializer != error_mark_node)
{
return cp_parser_operator (parser);
}
+/* Return an identifier node for a user-defined literal operator.
+ The suffix identifier is chained to the operator name identifier. */
+
+static tree
+cp_literal_operator_id (const char* name)
+{
+ tree identifier;
+ char *buffer = XNEWVEC (char, strlen (UDLIT_OP_ANSI_PREFIX)
+ + strlen (name) + 10);
+ sprintf (buffer, UDLIT_OP_ANSI_FORMAT, name);
+ identifier = get_identifier (buffer);
+ /*IDENTIFIER_UDLIT_OPNAME_P (identifier) = 1; If we get a flag someday. */
+
+ return identifier;
+}
+
/* Parse an operator.
operator:
cp_parser_require (parser, CPP_CLOSE_SQUARE, RT_CLOSE_SQUARE);
return ansi_opname (ARRAY_REF);
+ case CPP_STRING:
+ if (cxx_dialect == cxx98)
+ maybe_warn_cpp0x (CPP0X_USER_DEFINED_LITERALS);
+ if (TREE_STRING_LENGTH (token->u.value) > 2)
+ {
+ error ("expected empty string after %<operator%> keyword");
+ return error_mark_node;
+ }
+ /* Consume the string. */
+ cp_lexer_consume_token (parser->lexer);
+ /* Look for the suffix identifier. */
+ token = cp_lexer_peek_token (parser->lexer);
+ if (token->type == CPP_NAME)
+ {
+ id = cp_parser_identifier (parser);
+ if (id != error_mark_node)
+ {
+ const char *name = IDENTIFIER_POINTER (id);
+ return cp_literal_operator_id (name);
+ }
+ }
+ else
+ {
+ error ("expected suffix identifier");
+ return error_mark_node;
+ }
+
+ case CPP_STRING_USERDEF:
+ error ("missing space between %<\"\"%> and suffix identifier");
+ return error_mark_node;
+
default:
/* Anything else is an error. */
break;
user may try to do so, so we'll parse them and give an
appropriate diagnostic here. */
- /* Consume the `='. */
cp_token *start_token = cp_lexer_peek_token (parser->lexer);
- cp_lexer_consume_token (parser->lexer);
/* Find the name of the parameter pack. */
id_declarator = parameter_declarator->declarator;
/* Build a representation of the specialization. */
if (TREE_CODE (templ) == IDENTIFIER_NODE)
template_id = build_min_nt (TEMPLATE_ID_EXPR, templ, arguments);
- else if (DECL_CLASS_TEMPLATE_P (templ)
+ else if (DECL_TYPE_TEMPLATE_P (templ)
|| DECL_TEMPLATE_TEMPLATE_PARM_P (templ))
{
bool entering_scope;
its name; we will look it up again during template instantiation. */
if (DECL_FUNCTION_TEMPLATE_P (decl) || !DECL_P (decl))
{
- tree scope = CP_DECL_CONTEXT (get_first_fn (decl));
+ tree scope = ovl_scope (decl);
if (TYPE_P (scope) && dependent_type_p (scope))
return identifier;
}
parser->integral_constant_expression_p = false;
saved_non_ice_p = parser->non_integral_constant_expression_p;
parser->non_integral_constant_expression_p = false;
+
/* Parse the arguments. */
do
{
cp_parser_set_decl_spec_type (decl_specs,
type_spec,
token->location,
- /*user_defined_p=*/true);
+ /*type_definition_p=*/true);
return type_spec;
}
else
cp_parser_set_decl_spec_type (decl_specs,
type_spec,
token->location,
- /*user_defined_p=*/true);
+ /*type_definition_p=*/true);
return type_spec;
}
cp_parser_set_decl_spec_type (decl_specs,
type_spec,
token->location,
- /*user_defined_p=*/true);
+ /*type_definition_p=*/false);
return type_spec;
case RID_CONST:
break;
case RID_DECLTYPE:
- /* Parse the `decltype' type. */
- type = cp_parser_decltype (parser);
-
- if (decl_specs)
- cp_parser_set_decl_spec_type (decl_specs, type,
- token->location,
- /*user_defined_p=*/true);
-
- return type;
+ /* Since DR 743, decltype can either be a simple-type-specifier by
+ itself or begin a nested-name-specifier. Parsing it will replace
+ it with a CPP_DECLTYPE, so just rewind and let the CPP_DECLTYPE
+ handling below decide what to do. */
+ cp_parser_decltype (parser);
+ cp_lexer_set_token_position (parser->lexer, token);
+ break;
case RID_TYPEOF:
/* Consume the `typeof' token. */
if (decl_specs)
cp_parser_set_decl_spec_type (decl_specs, type,
token->location,
- /*user_defined_p=*/true);
+ /*type_definition_p=*/false);
return type;
case RID_UNDERLYING_TYPE:
type = cp_parser_trait_expr (parser, RID_UNDERLYING_TYPE);
-
if (decl_specs)
cp_parser_set_decl_spec_type (decl_specs, type,
token->location,
- /*user_defined_p=*/true);
+ /*type_definition_p=*/false);
return type;
+ case RID_BASES:
+ case RID_DIRECT_BASES:
+ type = cp_parser_trait_expr (parser, token->keyword);
+ if (decl_specs)
+ cp_parser_set_decl_spec_type (decl_specs, type,
+ token->location,
+ /*type_definition_p=*/false);
+ return type;
default:
break;
}
+ /* If token is an already-parsed decltype not followed by ::,
+ it's a simple-type-specifier. */
+ if (token->type == CPP_DECLTYPE
+ && cp_lexer_peek_nth_token (parser->lexer, 2)->type != CPP_SCOPE)
+ {
+ type = token->u.value;
+ if (decl_specs)
+ cp_parser_set_decl_spec_type (decl_specs, type,
+ token->location,
+ /*type_definition_p=*/false);
+ cp_lexer_consume_token (parser->lexer);
+ return type;
+ }
+
/* If the type-specifier was for a built-in type, we're done. */
if (type)
{
cp_parser_set_decl_spec_type (decl_specs,
type,
token->location,
- /*user_defined=*/false);
+ /*type_definition_p=*/false);
if (decl_specs)
decl_specs->any_specifiers_p = true;
if (type && decl_specs)
cp_parser_set_decl_spec_type (decl_specs, type,
token->location,
- /*user_defined=*/true);
+ /*type_definition_p=*/false);
}
/* If we didn't get a type-name, issue an error message. */
class-name
enum-name
typedef-name
+ simple-template-id [in c++0x]
enum-name:
identifier
/* If it's not a class-name, keep looking. */
if (!cp_parser_parse_definitely (parser))
{
- /* It must be a typedef-name or an enum-name. */
- return cp_parser_nonclass_name (parser);
+ if (cxx_dialect < cxx0x)
+ /* It must be a typedef-name or an enum-name. */
+ return cp_parser_nonclass_name (parser);
+
+ cp_parser_parse_tentatively (parser);
+ /* It is either a simple-template-id representing an
+ instantiation of an alias template... */
+ type_decl = cp_parser_template_id (parser,
+ /*template_keyword_p=*/false,
+ /*check_dependency_p=*/false,
+ /*is_declaration=*/false);
+ /* Note that this must be an instantiation of an alias template
+ because [temp.names]/6 says:
+
+ A template-id that names an alias template specialization
+ is a type-name.
+
+ Whereas [temp.names]/7 says:
+
+ A simple-template-id that names a class template
+ specialization is a class-name. */
+ if (type_decl != NULL_TREE
+ && TREE_CODE (type_decl) == TYPE_DECL
+ && TYPE_DECL_ALIAS_P (type_decl))
+ gcc_assert (DECL_TEMPLATE_INSTANTIATION (type_decl));
+ else
+ cp_parser_simulate_error (parser);
+
+ if (!cp_parser_parse_definitely (parser))
+ /* ... Or a typedef-name or an enum-name. */
+ return cp_parser_nonclass_name (parser);
}
return type_decl;
/* Look up the type-name. */
type_decl = cp_parser_lookup_name_simple (parser, identifier, token->location);
+ if (TREE_CODE (type_decl) == USING_DECL)
+ {
+ if (!DECL_DEPENDENT_P (type_decl))
+ type_decl = strip_using_decl (type_decl);
+ else if (USING_DECL_TYPENAME_P (type_decl))
+ {
+ /* We have found a type introduced by a using
+ declaration at class scope that refers to a dependent
+ type.
+
+ using typename :: [opt] nested-name-specifier unqualified-id ;
+ */
+ type_decl = make_typename_type (TREE_TYPE (type_decl),
+ DECL_NAME (type_decl),
+ typename_type, tf_error);
+ if (type_decl != error_mark_node)
+ type_decl = TYPE_NAME (type_decl);
+ }
+ }
+
if (TREE_CODE (type_decl) != TYPE_DECL
&& (objc_is_id (identifier) || objc_is_class_name (identifier)))
{
else if (tag_type == typename_type && TREE_CODE (decl) != TYPE_DECL)
type = NULL_TREE;
else
- type = TREE_TYPE (decl);
+ type = check_elaborated_type_specifier (tag_type, decl,
+ /*allow_template_p=*/true);
}
if (!type)
}
if (tag_type != enum_type)
- cp_parser_check_class_key (tag_type, type);
+ {
+ /* Indicate whether this class was declared as a `class' or as a
+ `struct'. */
+ if (TREE_CODE (type) == RECORD_TYPE)
+ CLASSTYPE_DECLARED_CLASS (type) = (tag_type == class_type);
+ cp_parser_check_class_key (tag_type, type);
+ }
/* A "<" cannot follow an elaborated type specifier. If that
happens, the user was probably trying to form a template-id. */
enum-specifier:
enum-head { enumerator-list [opt] }
+ enum-head { enumerator-list , } [C++0x]
enum-head:
enum-key identifier [opt] enum-base [opt]
GNU Extensions:
enum-key attributes[opt] identifier [opt] enum-base [opt]
{ enumerator-list [opt] }attributes[opt]
+ enum-key attributes[opt] identifier [opt] enum-base [opt]
+ { enumerator-list, }attributes[opt] [C++0x]
Returns an ENUM_TYPE representing the enumeration, or NULL_TREE
if the token stream isn't an enum-specifier after all. */
/* If the next token is a `}', there is a trailing comma. */
if (cp_lexer_next_token_is (parser->lexer, CPP_CLOSE_BRACE))
{
- if (!in_system_header)
- pedwarn (input_location, OPT_pedantic, "comma at end of enumerator list");
+ if (cxx_dialect < cxx0x && !in_system_header)
+ pedwarn (input_location, OPT_pedantic,
+ "comma at end of enumerator list");
break;
}
}
tree decl;
tree identifier;
tree qscope;
+ int oldcount = errorcount;
+ cp_token *diag_token = NULL;
if (access_declaration_p)
- cp_parser_parse_tentatively (parser);
+ {
+ diag_token = cp_lexer_peek_token (parser->lexer);
+ cp_parser_parse_tentatively (parser);
+ }
else
{
/* Look for the `using' keyword. */
/* Create the USING_DECL. */
decl = do_class_using_decl (parser->scope, identifier);
+ if (decl && typename_p)
+ USING_DECL_TYPENAME_P (decl) = 1;
+
if (check_for_bare_parameter_packs (decl))
return false;
- else
+ else
/* Add it to the list of members in this class. */
finish_member_declaration (decl);
}
/* Look for the final `;'. */
cp_parser_require (parser, CPP_SEMICOLON, RT_SEMICOLON);
-
+
+ if (access_declaration_p && errorcount == oldcount)
+ warning_at (diag_token->location, OPT_Wdeprecated,
+ "access declarations are deprecated "
+ "in favour of using-declarations; "
+ "suggestion: add the %<using%> keyword");
+
return true;
}
+/* Parse an alias-declaration.
+
+ alias-declaration:
+ using identifier attribute-specifier-seq [opt] = type-id */
+
+static tree
+cp_parser_alias_declaration (cp_parser* parser)
+{
+ tree id, type, decl, pushed_scope = NULL_TREE, attributes;
+ location_t id_location;
+ cp_declarator *declarator;
+ cp_decl_specifier_seq decl_specs;
+ bool member_p;
+ const char *saved_message = NULL;
+
+ /* Look for the `using' keyword. */
+ cp_parser_require_keyword (parser, RID_USING, RT_USING);
+ id_location = cp_lexer_peek_token (parser->lexer)->location;
+ id = cp_parser_identifier (parser);
+ if (id == error_mark_node)
+ return error_mark_node;
+
+ attributes = cp_parser_attributes_opt (parser);
+ if (attributes == error_mark_node)
+ return error_mark_node;
+
+ cp_parser_require (parser, CPP_EQ, RT_EQ);
+
+ /* Now we are going to parse the type-id of the declaration. */
+
+ /*
+ [dcl.type]/3 says:
+
+ "A type-specifier-seq shall not define a class or enumeration
+ unless it appears in the type-id of an alias-declaration (7.1.3) that
+ is not the declaration of a template-declaration."
+
+ In other words, if we currently are in an alias template, the
+ type-id should not define a type.
+
+ So let's set parser->type_definition_forbidden_message in that
+ case; cp_parser_check_type_definition (called by
+ cp_parser_class_specifier) will then emit an error if a type is
+ defined in the type-id. */
+ if (parser->num_template_parameter_lists)
+ {
+ saved_message = parser->type_definition_forbidden_message;
+ parser->type_definition_forbidden_message =
+ G_("types may not be defined in alias template declarations");
+ }
+
+ type = cp_parser_type_id (parser);
+
+ /* Restore the error message if need be. */
+ if (parser->num_template_parameter_lists)
+ parser->type_definition_forbidden_message = saved_message;
+
+ cp_parser_require (parser, CPP_SEMICOLON, RT_SEMICOLON);
+
+ if (cp_parser_error_occurred (parser))
+ return error_mark_node;
+
+ /* A typedef-name can also be introduced by an alias-declaration. The
+ identifier following the using keyword becomes a typedef-name. It has
+ the same semantics as if it were introduced by the typedef
+ specifier. In particular, it does not define a new type and it shall
+ not appear in the type-id. */
+
+ clear_decl_specs (&decl_specs);
+ decl_specs.type = type;
+ decl_specs.attributes = attributes;
+ ++decl_specs.specs[(int) ds_typedef];
+ ++decl_specs.specs[(int) ds_alias];
+
+ declarator = make_id_declarator (NULL_TREE, id, sfk_none);
+ declarator->id_loc = id_location;
+
+ member_p = at_class_scope_p ();
+ if (member_p)
+ decl = grokfield (declarator, &decl_specs, NULL_TREE, false,
+ NULL_TREE, attributes);
+ else
+ decl = start_decl (declarator, &decl_specs, 0,
+ attributes, NULL_TREE, &pushed_scope);
+ if (decl == error_mark_node)
+ return decl;
+
+ cp_finish_decl (decl, NULL_TREE, 0, NULL_TREE, 0);
+
+ if (pushed_scope)
+ pop_scope (pushed_scope);
+
+ /* If decl is a template, return its TEMPLATE_DECL so that it gets
+ added into the symbol table; otherwise, return the TYPE_DECL. */
+ if (DECL_LANG_SPECIFIC (decl)
+ && DECL_TEMPLATE_INFO (decl)
+ && PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (decl)))
+ {
+ decl = DECL_TI_TEMPLATE (decl);
+ if (member_p)
+ check_member_template (decl);
+ }
+
+ return decl;
+}
+
/* Parse a using-directive.
using-directive:
function-definition:
__extension__ function-definition
+ TM Extension:
+
+ function-definition:
+ decl-specifier-seq [opt] declarator function-transaction-block
+
The DECL_SPECIFIERS apply to this declarator. Returns a
representation of the entity declared. If MEMBER_P is TRUE, then
this declarator appears in a class scope. The new DECL created by
= cp_parser_declarator (parser, CP_PARSER_DECLARATOR_NAMED,
&ctor_dtor_or_conv_p,
/*parenthesized_p=*/NULL,
- /*member_p=*/false);
+ member_p);
/* Gather up the deferred checks. */
stop_deferring_access_checks ();
{
/* We want to record the extra mangling scope for in-class
initializers of class members and initializers of static data
- member templates. The former is a C++0x feature which isn't
- implemented yet, and I expect it will involve deferring
+ member templates. The former involves deferring
parsing of the initializer until end of class as with default
arguments. So right here we only handle the latter. */
if (!member_p && processing_template_decl)
/* Parse the virt-specifier-seq. */
virt_specifiers = cp_parser_virt_specifier_seq_opt (parser);
- late_return
- = cp_parser_late_return_type_opt (parser);
+ late_return = (cp_parser_late_return_type_opt
+ (parser, member_p ? cv_quals : -1));
/* Create the function-declarator. */
declarator = make_call_declarator (declarator,
&non_constant_p);
if (!non_constant_p)
/* OK */;
- /* Normally, the array bound must be an integral constant
- expression. However, as an extension, we allow VLAs
- in function scopes as long as they aren't part of a
- parameter declaration. */
+ else if (error_operand_p (bounds))
+ /* Already gave an error. */;
else if (!parser->in_function_body
|| current_binding_level->kind == sk_function_parms)
{
+ /* Normally, the array bound must be an integral constant
+ expression. However, as an extension, we allow VLAs
+ in function scopes as long as they aren't part of a
+ parameter declaration. */
cp_parser_error (parser,
"array bound is not an integer constant");
bounds = error_mark_node;
}
- else if (processing_template_decl && !error_operand_p (bounds))
+ else if (processing_template_decl)
{
/* Remember this wasn't a constant-expression. */
bounds = build_nop (TREE_TYPE (bounds), bounds);
if (TREE_CODE (parser->scope) == NAMESPACE_DECL)
error_at (token->location, "%qD is a namespace", parser->scope);
+ else if (TREE_CODE (parser->scope) == ENUMERAL_TYPE)
+ error_at (token->location, "cannot form pointer to member of "
+ "non-class %q#T", parser->scope);
else
{
/* The type of which the member is a member is given by the
if (token->type != CPP_NAME)
break;
if (!strcmp (IDENTIFIER_POINTER(token->u.value), "override"))
- virt_specifier = VIRT_SPEC_OVERRIDE;
+ {
+ maybe_warn_cpp0x (CPP0X_OVERRIDE_CONTROLS);
+ virt_specifier = VIRT_SPEC_OVERRIDE;
+ }
else if (!strcmp (IDENTIFIER_POINTER(token->u.value), "final"))
- virt_specifier = VIRT_SPEC_FINAL;
+ {
+ maybe_warn_cpp0x (CPP0X_OVERRIDE_CONTROLS);
+ virt_specifier = VIRT_SPEC_FINAL;
+ }
+ else if (!strcmp (IDENTIFIER_POINTER(token->u.value), "__final"))
+ {
+ virt_specifier = VIRT_SPEC_FINAL;
+ }
else
break;
return virt_specifiers;
}
+/* Used by handling of trailing-return-types and NSDMI, in which 'this'
+ is in scope even though it isn't real. */
+
+static void
+inject_this_parameter (tree ctype, cp_cv_quals quals)
+{
+ tree this_parm;
+
+ if (current_class_ptr)
+ {
+ /* We don't clear this between NSDMIs. Is it already what we want? */
+ tree type = TREE_TYPE (TREE_TYPE (current_class_ptr));
+ if (same_type_ignoring_top_level_qualifiers_p (ctype, type)
+ && cp_type_quals (type) == quals)
+ return;
+ }
+
+ this_parm = build_this_parm (ctype, quals);
+ /* Clear this first to avoid shortcut in cp_build_indirect_ref. */
+ current_class_ptr = NULL_TREE;
+ current_class_ref
+ = cp_build_indirect_ref (this_parm, RO_NULL, tf_warning_or_error);
+ current_class_ptr = this_parm;
+}
+
/* Parse a late-specified return type, if any. This is not a separate
non-terminal, but part of a function declarator, which looks like
-> trailing-type-specifier-seq abstract-declarator(opt)
- Returns the type indicated by the type-id. */
+ Returns the type indicated by the type-id.
+
+ QUALS is either a bitmask of cv_qualifiers or -1 for a non-member
+ function. */
static tree
-cp_parser_late_return_type_opt (cp_parser* parser)
+cp_parser_late_return_type_opt (cp_parser* parser, cp_cv_quals quals)
{
cp_token *token;
+ tree type;
/* Peek at the next token. */
token = cp_lexer_peek_token (parser->lexer);
/* Consume the ->. */
cp_lexer_consume_token (parser->lexer);
- return cp_parser_trailing_type_id (parser);
+ if (quals >= 0)
+ {
+ /* DR 1207: 'this' is in scope in the trailing return type. */
+ gcc_assert (current_class_ptr == NULL_TREE);
+ inject_this_parameter (current_class_type, quals);
+ }
+
+ type = cp_parser_trailing_type_id (parser);
+
+ if (quals >= 0)
+ current_class_ptr = current_class_ref = NULL_TREE;
+
+ return type;
}
/* Parse a declarator-id.
{
cp_parameter_declarator *parameter;
tree decl = error_mark_node;
- bool parenthesized_p;
+ bool parenthesized_p = false;
/* Parse the parameter. */
parameter
= cp_parser_parameter_declaration (parser,
/* If the next token is `=', then process a default argument. */
if (cp_lexer_next_token_is (parser->lexer, CPP_EQ))
{
- /* Consume the `='. */
- cp_lexer_consume_token (parser->lexer);
-
+ token = cp_lexer_peek_token (parser->lexer);
/* If we are defining a class, then the tokens that make up the
default argument must be saved and processed later. */
if (!template_parm_p && at_class_scope_p ()
&& TYPE_BEING_DEFINED (current_class_type)
&& !LAMBDA_TYPE_P (current_class_type))
- {
- unsigned depth = 0;
- int maybe_template_id = 0;
- cp_token *first_token;
- cp_token *token;
+ default_argument = cp_parser_cache_defarg (parser, /*nsdmi=*/false);
+ /* Outside of a class definition, we can just parse the
+ assignment-expression. */
+ else
+ default_argument
+ = cp_parser_default_argument (parser, template_parm_p);
- /* Add tokens until we have processed the entire default
- argument. We add the range [first_token, token). */
- first_token = cp_lexer_peek_token (parser->lexer);
- while (true)
- {
- bool done = false;
-
- /* Peek at the next token. */
- token = cp_lexer_peek_token (parser->lexer);
- /* What we do depends on what token we have. */
- switch (token->type)
- {
- /* In valid code, a default argument must be
- immediately followed by a `,' `)', or `...'. */
- case CPP_COMMA:
- if (depth == 0 && maybe_template_id)
- {
- /* If we've seen a '<', we might be in a
- template-argument-list. Until Core issue 325 is
- resolved, we don't know how this situation ought
- to be handled, so try to DTRT. We check whether
- what comes after the comma is a valid parameter
- declaration list. If it is, then the comma ends
- the default argument; otherwise the default
- argument continues. */
- bool error = false;
- tree t;
-
- /* Set ITALP so cp_parser_parameter_declaration_list
- doesn't decide to commit to this parse. */
- bool saved_italp = parser->in_template_argument_list_p;
- parser->in_template_argument_list_p = true;
-
- cp_parser_parse_tentatively (parser);
- cp_lexer_consume_token (parser->lexer);
- begin_scope (sk_function_parms, NULL_TREE);
- cp_parser_parameter_declaration_list (parser, &error);
- for (t = current_binding_level->names; t; t = DECL_CHAIN (t))
- pop_binding (DECL_NAME (t), t);
- leave_scope ();
- if (!cp_parser_error_occurred (parser) && !error)
- done = true;
- cp_parser_abort_tentative_parse (parser);
-
- parser->in_template_argument_list_p = saved_italp;
- break;
- }
- case CPP_CLOSE_PAREN:
- case CPP_ELLIPSIS:
- /* If we run into a non-nested `;', `}', or `]',
- then the code is invalid -- but the default
- argument is certainly over. */
- case CPP_SEMICOLON:
- case CPP_CLOSE_BRACE:
- case CPP_CLOSE_SQUARE:
- if (depth == 0)
- done = true;
- /* Update DEPTH, if necessary. */
- else if (token->type == CPP_CLOSE_PAREN
- || token->type == CPP_CLOSE_BRACE
- || token->type == CPP_CLOSE_SQUARE)
- --depth;
- break;
-
- case CPP_OPEN_PAREN:
- case CPP_OPEN_SQUARE:
- case CPP_OPEN_BRACE:
- ++depth;
- break;
-
- case CPP_LESS:
- if (depth == 0)
- /* This might be the comparison operator, or it might
- start a template argument list. */
- ++maybe_template_id;
- break;
-
- case CPP_RSHIFT:
- if (cxx_dialect == cxx98)
- break;
- /* Fall through for C++0x, which treats the `>>'
- operator like two `>' tokens in certain
- cases. */
-
- case CPP_GREATER:
- if (depth == 0)
- {
- /* This might be an operator, or it might close a
- template argument list. But if a previous '<'
- started a template argument list, this will have
- closed it, so we can't be in one anymore. */
- maybe_template_id -= 1 + (token->type == CPP_RSHIFT);
- if (maybe_template_id < 0)
- maybe_template_id = 0;
- }
- break;
-
- /* If we run out of tokens, issue an error message. */
- case CPP_EOF:
- case CPP_PRAGMA_EOL:
- error_at (token->location, "file ends in default argument");
- done = true;
- break;
-
- case CPP_NAME:
- case CPP_SCOPE:
- /* In these cases, we should look for template-ids.
- For example, if the default argument is
- `X<int, double>()', we need to do name lookup to
- figure out whether or not `X' is a template; if
- so, the `,' does not end the default argument.
-
- That is not yet done. */
- break;
-
- default:
- break;
- }
-
- /* If we've reached the end, stop. */
- if (done)
- break;
-
- /* Add the token to the token block. */
- token = cp_lexer_consume_token (parser->lexer);
- }
-
- /* Create a DEFAULT_ARG to represent the unparsed default
- argument. */
- default_argument = make_node (DEFAULT_ARG);
- DEFARG_TOKENS (default_argument)
- = cp_token_cache_new (first_token, token);
- DEFARG_INSTANTIATIONS (default_argument) = NULL;
- }
- /* Outside of a class definition, we can just parse the
- assignment-expression. */
- else
- {
- token = cp_lexer_peek_token (parser->lexer);
- default_argument
- = cp_parser_default_argument (parser, template_parm_p);
- }
-
- if (!parser->default_arg_ok_p)
- {
- if (flag_permissive)
- warning (0, "deprecated use of default argument for parameter of non-function");
- else
+ if (!parser->default_arg_ok_p)
+ {
+ if (flag_permissive)
+ warning (0, "deprecated use of default argument for parameter of non-function");
+ else
{
error_at (token->location,
"default arguments are only "
if (id_declarator && id_declarator->kind == cdk_id)
error_at (declarator_token_start->location,
- template_parm_p
- ? "template parameter pack %qD"
- " cannot have a default argument"
- : "parameter pack %qD cannot have a default argument",
+ template_parm_p
+ ? G_("template parameter pack %qD "
+ "cannot have a default argument")
+ : G_("parameter pack %qD cannot have "
+ "a default argument"),
id_declarator->u.id.unqualified_name);
else
error_at (declarator_token_start->location,
- template_parm_p
- ? "template parameter pack cannot have a default argument"
- : "parameter pack cannot have a default argument");
-
+ template_parm_p
+ ? G_("template parameter pack cannot have "
+ "a default argument")
+ : G_("parameter pack cannot have a "
+ "default argument"));
+
default_argument = NULL_TREE;
}
}
tree default_argument = NULL_TREE;
bool saved_greater_than_is_operator_p;
bool saved_local_variables_forbidden_p;
+ bool non_constant_p, is_direct_init;
/* Make sure that PARSER->GREATER_THAN_IS_OPERATOR_P is
set correctly. */
if (template_parm_p)
push_deferring_access_checks (dk_no_deferred);
default_argument
- = cp_parser_assignment_expression (parser, /*cast_p=*/false, NULL);
+ = cp_parser_initializer (parser, &is_direct_init, &non_constant_p);
+ if (BRACE_ENCLOSED_INITIALIZER_P (default_argument))
+ maybe_warn_cpp0x (CPP0X_INITIALIZER_LISTS);
if (template_parm_p)
pop_deferring_access_checks ();
parser->greater_than_is_operator_p = saved_greater_than_is_operator_p;
cp_parser_function_body changed its state. */
if (check_body_p)
{
- list = body;
- if (TREE_CODE (list) == BIND_EXPR)
- list = BIND_EXPR_BODY (list);
- if (TREE_CODE (list) == STATEMENT_LIST
- && STATEMENT_LIST_TAIL (list) != NULL)
+ list = cur_stmt_list;
+ if (STATEMENT_LIST_TAIL (list))
last = STATEMENT_LIST_TAIL (list)->stmt;
}
/* Parse the function-body. */
= cp_parser_constant_expression (parser,
/*allow_non_constant_p=*/true,
non_constant_p);
- if (!*non_constant_p)
- {
- /* We only want to fold if this is really a constant
- expression. FIXME Actually, we don't want to fold here, but in
- cp_finish_decl. */
- tree folded = fold_non_dependent_expr (initializer);
- folded = maybe_constant_value (folded);
- if (TREE_CONSTANT (folded))
- initializer = folded;
- }
}
else
initializer = cp_parser_braced_list (parser, non_constant_p);
GNU Extension:
initializer-list:
- identifier : initializer-clause
- initializer-list, identifier : initializer-clause
+ designation initializer-clause ...[opt]
+ initializer-list , designation initializer-clause ...[opt]
+
+ designation:
+ . identifier =
+ identifier :
+ [ constant-expression ] =
Returns a VEC of constructor_elt. The VALUE of each elt is an expression
for the initializer. If the INDEX of the elt is non-NULL, it is the
while (true)
{
cp_token *token;
- tree identifier;
+ tree designator;
tree initializer;
bool clause_non_constant_p;
pedwarn (input_location, OPT_pedantic,
"ISO C++ does not allow designated initializers");
/* Consume the identifier. */
- identifier = cp_lexer_consume_token (parser->lexer)->u.value;
+ designator = cp_lexer_consume_token (parser->lexer)->u.value;
/* Consume the `:'. */
cp_lexer_consume_token (parser->lexer);
}
+ /* Also handle the C99 syntax, '. id ='. */
+ else if (cp_parser_allow_gnu_extensions_p (parser)
+ && cp_lexer_next_token_is (parser->lexer, CPP_DOT)
+ && cp_lexer_peek_nth_token (parser->lexer, 2)->type == CPP_NAME
+ && cp_lexer_peek_nth_token (parser->lexer, 3)->type == CPP_EQ)
+ {
+ /* Warn the user that they are using an extension. */
+ pedwarn (input_location, OPT_pedantic,
+ "ISO C++ does not allow C99 designated initializers");
+ /* Consume the `.'. */
+ cp_lexer_consume_token (parser->lexer);
+ /* Consume the identifier. */
+ designator = cp_lexer_consume_token (parser->lexer)->u.value;
+ /* Consume the `='. */
+ cp_lexer_consume_token (parser->lexer);
+ }
+ /* Also handle C99 array designators, '[ const ] ='. */
+ else if (cp_parser_allow_gnu_extensions_p (parser)
+ && !c_dialect_objc ()
+ && cp_lexer_next_token_is (parser->lexer, CPP_OPEN_SQUARE))
+ {
+ /* In C++11, [ could start a lambda-introducer. */
+ cp_parser_parse_tentatively (parser);
+ cp_lexer_consume_token (parser->lexer);
+ designator = cp_parser_constant_expression (parser, false, NULL);
+ cp_parser_require (parser, CPP_CLOSE_SQUARE, RT_CLOSE_SQUARE);
+ cp_parser_require (parser, CPP_EQ, RT_EQ);
+ if (!cp_parser_parse_definitely (parser))
+ designator = NULL_TREE;
+ }
else
- identifier = NULL_TREE;
+ designator = NULL_TREE;
/* Parse the initializer. */
initializer = cp_parser_initializer_clause (parser,
}
/* Add it to the vector. */
- CONSTRUCTOR_APPEND_ELT(v, identifier, initializer);
+ CONSTRUCTOR_APPEND_ELT (v, designator, initializer);
/* If the next token is not a comma, we have reached the end of
the list. */
decl = TYPE_NAME (decl);
}
+ decl = strip_using_decl (decl);
+
/* Check to see that it is really the name of a class. */
if (TREE_CODE (decl) == TEMPLATE_ID_EXPR
&& TREE_CODE (TREE_OPERAND (decl, 0)) == IDENTIFIER_NODE
bool nested_name_specifier_p;
unsigned saved_num_template_parameter_lists;
bool saved_in_function_body;
+ unsigned char in_statement;
+ bool in_switch_statement_p;
bool saved_in_unbraced_linkage_specification_p;
tree old_scope = NULL_TREE;
tree scope = NULL_TREE;
/* We are not in a function body. */
saved_in_function_body = parser->in_function_body;
parser->in_function_body = false;
+ /* Or in a loop. */
+ in_statement = parser->in_statement;
+ parser->in_statement = 0;
+ /* Or in a switch. */
+ in_switch_statement_p = parser->in_switch_statement_p;
+ parser->in_switch_statement_p = false;
/* We are not immediately inside an extern "lang" block. */
saved_in_unbraced_linkage_specification_p
= parser->in_unbraced_linkage_specification_p;
there is no need to delay the parsing of `A::B::f'. */
if (--parser->num_classes_being_defined == 0)
{
- tree fn;
+ tree decl;
tree class_type = NULL_TREE;
tree pushed_scope = NULL_TREE;
unsigned ix;
cp_default_arg_entry *e;
+ tree save_ccp, save_ccr;
/* In a first pass, parse default arguments to the functions.
Then, in a second pass, parse the bodies of the functions.
FOR_EACH_VEC_ELT (cp_default_arg_entry, unparsed_funs_with_default_args,
ix, e)
{
- fn = e->decl;
+ decl = e->decl;
/* If there are default arguments that have not yet been processed,
take care of them now. */
if (class_type != e->class_type)
pushed_scope = push_scope (class_type);
}
/* Make sure that any template parameters are in scope. */
- maybe_begin_member_template_processing (fn);
+ maybe_begin_member_template_processing (decl);
/* Parse the default argument expressions. */
- cp_parser_late_parsing_default_args (parser, fn);
+ cp_parser_late_parsing_default_args (parser, decl);
/* Remove any template parameters from the symbol table. */
maybe_end_member_template_processing ();
}
+ VEC_truncate (cp_default_arg_entry, unparsed_funs_with_default_args, 0);
+ /* Now parse any NSDMIs. */
+ save_ccp = current_class_ptr;
+ save_ccr = current_class_ref;
+ FOR_EACH_VEC_ELT (tree, unparsed_nsdmis, ix, decl)
+ {
+ if (class_type != DECL_CONTEXT (decl))
+ {
+ if (pushed_scope)
+ pop_scope (pushed_scope);
+ class_type = DECL_CONTEXT (decl);
+ pushed_scope = push_scope (class_type);
+ }
+ inject_this_parameter (class_type, TYPE_UNQUALIFIED);
+ cp_parser_late_parsing_nsdmi (parser, decl);
+ }
+ VEC_truncate (tree, unparsed_nsdmis, 0);
+ current_class_ptr = save_ccp;
+ current_class_ref = save_ccr;
if (pushed_scope)
pop_scope (pushed_scope);
- VEC_truncate (cp_default_arg_entry, unparsed_funs_with_default_args, 0);
/* Now parse the body of the functions. */
- FOR_EACH_VEC_ELT (tree, unparsed_funs_with_definitions, ix, fn)
- cp_parser_late_parsing_for_member (parser, fn);
+ FOR_EACH_VEC_ELT (tree, unparsed_funs_with_definitions, ix, decl)
+ cp_parser_late_parsing_for_member (parser, decl);
VEC_truncate (tree, unparsed_funs_with_definitions, 0);
}
pop_deferring_access_checks ();
/* Restore saved state. */
+ parser->in_switch_statement_p = in_switch_statement_p;
+ parser->in_statement = in_statement;
parser->in_function_body = saved_in_function_body;
parser->num_template_parameter_lists
= saved_num_template_parameter_lists;
{
cp_parser_check_for_invalid_template_id (parser, id,
type_start_token->location);
- virt_specifiers = cp_parser_virt_specifier_seq_opt (parser);
}
+ virt_specifiers = cp_parser_virt_specifier_seq_opt (parser);
/* If it's not a `:' or a `{' then we can't really be looking at a
class-head, since a class-head only appears as part of a
:: [opt] nested-name-specifier template [opt] unqualified-id ;
using-declaration
template-declaration
+ alias-declaration
member-declarator-list:
member-declarator
/* Check for a using-declaration. */
if (cp_lexer_next_token_is_keyword (parser->lexer, RID_USING))
{
- /* Parse the using-declaration. */
- cp_parser_using_declaration (parser,
- /*access_declaration_p=*/false);
- return;
+ if (cxx_dialect < cxx0x)
+ {
+ /* Parse the using-declaration. */
+ cp_parser_using_declaration (parser,
+ /*access_declaration_p=*/false);
+ return;
+ }
+ else
+ {
+ tree decl;
+ cp_parser_parse_tentatively (parser);
+ decl = cp_parser_alias_declaration (parser);
+ if (cp_parser_parse_definitely (parser))
+ finish_member_declaration (decl);
+ else
+ cp_parser_using_declaration (parser,
+ /*access_declaration_p=*/false);
+ return;
+ }
}
/* Check for @defs. */
parser->colon_corrects_to_scope_p = false;
if (cp_parser_using_declaration (parser, /*access_declaration=*/true))
- goto out;
+ goto out;
/* Parse the decl-specifier-seq. */
decl_spec_token_start = cp_lexer_peek_token (parser->lexer);
constant-initializer. When we call `grokfield', it will
perform more stringent semantics checks. */
initializer_token_start = cp_lexer_peek_token (parser->lexer);
- if (function_declarator_p (declarator))
+ if (function_declarator_p (declarator)
+ || (decl_specifiers.type
+ && TREE_CODE (decl_specifiers.type) == TYPE_DECL
+ && (TREE_CODE (TREE_TYPE (decl_specifiers.type))
+ == FUNCTION_TYPE)))
initializer = cp_parser_pure_specifier (parser);
+ else if (decl_specifiers.storage_class != sc_static)
+ initializer = cp_parser_save_nsdmi (parser);
+ else if (cxx_dialect >= cxx0x)
+ {
+ bool nonconst;
+ /* Don't require a constant rvalue in C++11, since we
+ might want a reference constant. We'll enforce
+ constancy later. */
+ cp_lexer_consume_token (parser->lexer);
+ /* Parse the initializer. */
+ initializer = cp_parser_initializer_clause (parser,
+ &nonconst);
+ }
else
/* Parse the initializer. */
initializer = cp_parser_constant_initializer (parser);
}
+ else if (cp_lexer_next_token_is (parser->lexer, CPP_OPEN_BRACE)
+ && !function_declarator_p (declarator))
+ {
+ bool x;
+ if (decl_specifiers.storage_class != sc_static)
+ initializer = cp_parser_save_nsdmi (parser);
+ else
+ initializer = cp_parser_initializer (parser, &x, &x);
+ }
/* Otherwise, there is no initializer. */
else
initializer = NULL_TREE;
possible that this fact is an oversight in the
standard, since a pure function may be defined
outside of the class-specifier. */
- if (initializer)
+ if (initializer && initializer_token_start)
error_at (initializer_token_start->location,
"pure-specifier on function-definition");
decl = cp_parser_save_member_function_body (parser,
if (TREE_CODE (decl) == FUNCTION_DECL)
cp_parser_save_default_args (parser, decl);
+ else if (TREE_CODE (decl) == FIELD_DECL
+ && !DECL_C_BIT_FIELD (decl)
+ && DECL_INITIAL (decl))
+ /* Add DECL to the queue of NSDMI to be parsed later. */
+ VEC_safe_push (tree, gc, unparsed_nsdmis, decl);
}
if (assume_semicolon)
}
/* Add BASE to the front of the list. */
- if (base != error_mark_node)
+ if (base && base != error_mark_node)
{
if (pack_expansion_p)
/* Make this a pack expansion type. */
TREE_VALUE (base) = make_pack_expansion (TREE_VALUE (base));
-
if (!check_for_bare_parameter_packs (TREE_VALUE (base)))
{
class_scope_p = (parser->scope && TYPE_P (parser->scope));
template_p = class_scope_p && cp_parser_optional_template_keyword (parser);
- /* Finally, look for the class-name. */
- type = cp_parser_class_name (parser,
- class_scope_p,
- template_p,
- typename_type,
- /*check_dependency_p=*/true,
- /*class_head_p=*/false,
- /*is_declaration=*/true);
+ if (!parser->scope
+ && cp_lexer_next_token_is_decltype (parser->lexer))
+ /* DR 950 allows decltype as a base-specifier. */
+ type = cp_parser_decltype (parser);
+ else
+ {
+ /* Otherwise, look for the class-name. */
+ type = cp_parser_class_name (parser,
+ class_scope_p,
+ template_p,
+ typename_type,
+ /*check_dependency_p=*/true,
+ /*class_head_p=*/false,
+ /*is_declaration=*/true);
+ type = TREE_TYPE (type);
+ }
if (type == error_mark_node)
return error_mark_node;
- return finish_base_specifier (TREE_TYPE (type), access, virtual_p);
+ return finish_base_specifier (type, access, virtual_p);
}
/* Exception handling [gram.exception] */
-/* Parse an (optional) exception-specification.
+/* Parse an (optional) noexcept-specification.
- exception-specification:
- throw ( type-id-list [opt] )
+ noexcept-specification:
+ noexcept ( constant-expression ) [opt]
- Returns a TREE_LIST representing the exception-specification. The
- TREE_VALUE of each node is a type. */
+ If no noexcept-specification is present, returns NULL_TREE.
+ Otherwise, if REQUIRE_CONSTEXPR is false, then either parse and return any
+ expression if parentheses follow noexcept, or return BOOLEAN_TRUE_NODE if
+ there are no parentheses. CONSUMED_EXPR will be set accordingly.
+ Otherwise, returns a noexcept specification unless RETURN_COND is true,
+ in which case a boolean condition is returned instead. */
static tree
-cp_parser_exception_specification_opt (cp_parser* parser)
+cp_parser_noexcept_specification_opt (cp_parser* parser,
+ bool require_constexpr,
+ bool* consumed_expr,
+ bool return_cond)
{
cp_token *token;
- tree type_id_list;
const char *saved_message;
/* Peek at the next token. */
{
cp_lexer_consume_token (parser->lexer);
- /* Types may not be defined in an exception-specification. */
- saved_message = parser->type_definition_forbidden_message;
- parser->type_definition_forbidden_message
- = G_("types may not be defined in an exception-specification");
+ if (require_constexpr)
+ {
+ /* Types may not be defined in an exception-specification. */
+ saved_message = parser->type_definition_forbidden_message;
+ parser->type_definition_forbidden_message
+ = G_("types may not be defined in an exception-specification");
- expr = cp_parser_constant_expression (parser, false, NULL);
+ expr = cp_parser_constant_expression (parser, false, NULL);
- /* Restore the saved message. */
- parser->type_definition_forbidden_message = saved_message;
+ /* Restore the saved message. */
+ parser->type_definition_forbidden_message = saved_message;
+ }
+ else
+ {
+ expr = cp_parser_expression (parser, false, NULL);
+ *consumed_expr = true;
+ }
cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN);
}
else
- expr = boolean_true_node;
+ {
+ expr = boolean_true_node;
+ if (!require_constexpr)
+ *consumed_expr = false;
+ }
- return build_noexcept_spec (expr, tf_warning_or_error);
+ /* We cannot build a noexcept-spec right away because this will check
+ that expr is a constexpr. */
+ if (!return_cond)
+ return build_noexcept_spec (expr, tf_warning_or_error);
+ else
+ return expr;
}
+ else
+ return NULL_TREE;
+}
+
+/* Parse an (optional) exception-specification.
+
+ exception-specification:
+ throw ( type-id-list [opt] )
+
+ Returns a TREE_LIST representing the exception-specification. The
+ TREE_VALUE of each node is a type. */
+
+static tree
+cp_parser_exception_specification_opt (cp_parser* parser)
+{
+ cp_token *token;
+ tree type_id_list;
+ const char *saved_message;
+
+ /* Peek at the next token. */
+ token = cp_lexer_peek_token (parser->lexer);
+
+ /* Is it a noexcept-specification? */
+ type_id_list = cp_parser_noexcept_specification_opt(parser, true, NULL,
+ false);
+ if (type_id_list != NULL_TREE)
+ return type_id_list;
/* If it's not `throw', then there's no exception-specification. */
if (!cp_parser_is_keyword (token, RID_THROW))
object_decl = lookup_member (object_type,
name,
/*protect=*/0,
- tag_type != none_type);
+ tag_type != none_type,
+ tf_warning_or_error);
/* Look it up in the enclosing context, too. */
decl = lookup_name_real (name, tag_type != none_type,
/*nonclass=*/0,
if (DECL_P (decl))
check_accessibility_of_qualified_id (decl, object_type, parser->scope);
+ maybe_record_typedef_use (decl);
+
return decl;
}
start_lambda_scope (current_function_decl);
- /* If the next token is `try', then we are looking at a
- function-try-block. */
- if (cp_lexer_next_token_is_keyword (parser->lexer, RID_TRY))
+ /* If the next token is `try', `__transaction_atomic', or
+ `__transaction_relaxed`, then we are looking at either function-try-block
+ or function-transaction-block. Note that all of these include the
+ function-body. */
+ if (cp_lexer_next_token_is_keyword (parser->lexer, RID_TRANSACTION_ATOMIC))
+ ctor_initializer_p = cp_parser_function_transaction (parser,
+ RID_TRANSACTION_ATOMIC);
+ else if (cp_lexer_next_token_is_keyword (parser->lexer,
+ RID_TRANSACTION_RELAXED))
+ ctor_initializer_p = cp_parser_function_transaction (parser,
+ RID_TRANSACTION_RELAXED);
+ else if (cp_lexer_next_token_is_keyword (parser->lexer, RID_TRY))
ctor_initializer_p = cp_parser_function_try_block (parser);
- /* A function-try-block includes the function-body, so we only do
- this next part if we're not processing a function-try-block. */
else
ctor_initializer_p
= cp_parser_ctor_initializer_opt_and_function_body (parser);
if (cp_lexer_next_token_is_keyword (parser->lexer,
RID_TEMPLATE))
cp_parser_template_declaration_after_export (parser, member_p);
+ else if (cxx_dialect >= cxx0x
+ && cp_lexer_next_token_is_keyword (parser->lexer, RID_USING))
+ decl = cp_parser_alias_declaration (parser);
else
{
/* There are no access checks when parsing a template, as we do not
/* Finish up. */
finish_template_decl (parameter_list);
+ /* Check the template arguments for a literal operator template. */
+ if (decl
+ && (TREE_CODE (decl) == FUNCTION_DECL || DECL_FUNCTION_TEMPLATE_P (decl))
+ && UDLIT_OPER_P (DECL_NAME (decl)))
+ {
+ bool ok = true;
+ if (parameter_list == NULL_TREE)
+ ok = false;
+ else
+ {
+ int num_parms = TREE_VEC_LENGTH (parameter_list);
+ if (num_parms != 1)
+ ok = false;
+ else
+ {
+ tree parm_list = TREE_VEC_ELT (parameter_list, 0);
+ tree parm = INNERMOST_TEMPLATE_PARMS (parm_list);
+ if (TREE_TYPE (parm) != char_type_node
+ || !TEMPLATE_PARM_PARAMETER_PACK (DECL_INITIAL (parm)))
+ ok = false;
+ }
+ }
+ if (!ok)
+ error ("literal operator template %qD has invalid parameter list."
+ " Expected non-type template argument pack <char...>",
+ decl);
+ }
/* Register member declarations. */
if (member_p && !friend_p && decl && !DECL_CLASS_TEMPLATE_P (decl))
finish_member_declaration (decl);
return fn;
}
+/* Save the tokens that make up the in-class initializer for a non-static
+ data member. Returns a DEFAULT_ARG. */
+
+static tree
+cp_parser_save_nsdmi (cp_parser* parser)
+{
+ return cp_parser_cache_defarg (parser, /*nsdmi=*/true);
+}
+
/* Parse a template-argument-list, as well as the trailing ">" (but
- not the opening ">"). See cp_parser_template_argument_list for the
+ not the opening "<"). See cp_parser_template_argument_list for the
return value. */
static tree
}
}
+/* DEFAULT_ARG contains the saved tokens for the initializer of DECL,
+ which is either a FIELD_DECL or PARM_DECL. Parse it and return
+ the result. For a PARM_DECL, PARMTYPE is the corresponding type
+ from the parameter-type-list. */
+
+static tree
+cp_parser_late_parse_one_default_arg (cp_parser *parser, tree decl,
+ tree default_arg, tree parmtype)
+{
+ cp_token_cache *tokens;
+ tree parsed_arg;
+ bool dummy;
+
+ if (default_arg == error_mark_node)
+ return error_mark_node;
+
+ /* Push the saved tokens for the default argument onto the parser's
+ lexer stack. */
+ tokens = DEFARG_TOKENS (default_arg);
+ cp_parser_push_lexer_for_tokens (parser, tokens);
+
+ start_lambda_scope (decl);
+
+ /* Parse the default argument. */
+ parsed_arg = cp_parser_initializer (parser, &dummy, &dummy);
+ if (BRACE_ENCLOSED_INITIALIZER_P (parsed_arg))
+ maybe_warn_cpp0x (CPP0X_INITIALIZER_LISTS);
+
+ finish_lambda_scope ();
+
+ if (!processing_template_decl)
+ {
+ /* In a non-template class, check conversions now. In a template,
+ we'll wait and instantiate these as needed. */
+ if (TREE_CODE (decl) == PARM_DECL)
+ parsed_arg = check_default_argument (parmtype, parsed_arg);
+ else
+ {
+ int flags = LOOKUP_IMPLICIT;
+ if (BRACE_ENCLOSED_INITIALIZER_P (parsed_arg)
+ && CONSTRUCTOR_IS_DIRECT_INIT (parsed_arg))
+ flags = LOOKUP_NORMAL;
+ parsed_arg = digest_init_flags (TREE_TYPE (decl), parsed_arg, flags);
+ }
+ }
+
+ /* If the token stream has not been completely used up, then
+ there was extra junk after the end of the default
+ argument. */
+ if (!cp_lexer_next_token_is (parser->lexer, CPP_EOF))
+ {
+ if (TREE_CODE (decl) == PARM_DECL)
+ cp_parser_error (parser, "expected %<,%>");
+ else
+ cp_parser_error (parser, "expected %<;%>");
+ }
+
+ /* Revert to the main lexer. */
+ cp_parser_pop_lexer (parser);
+
+ return parsed_arg;
+}
+
+/* FIELD is a non-static data member with an initializer which we saved for
+ later; parse it now. */
+
+static void
+cp_parser_late_parsing_nsdmi (cp_parser *parser, tree field)
+{
+ tree def;
+
+ push_unparsed_function_queues (parser);
+ def = cp_parser_late_parse_one_default_arg (parser, field,
+ DECL_INITIAL (field),
+ NULL_TREE);
+ pop_unparsed_function_queues (parser);
+
+ DECL_INITIAL (field) = def;
+}
+
/* FN is a FUNCTION_DECL which may contains a parameter with an
unparsed DEFAULT_ARG. Parse the default args now. This function
assumes that the current scope is the scope in which the default
parm = TREE_CHAIN (parm),
parmdecl = DECL_CHAIN (parmdecl))
{
- cp_token_cache *tokens;
tree default_arg = TREE_PURPOSE (parm);
tree parsed_arg;
VEC(tree,gc) *insts;
already declared with default arguments. */
continue;
- /* Push the saved tokens for the default argument onto the parser's
- lexer stack. */
- tokens = DEFARG_TOKENS (default_arg);
- cp_parser_push_lexer_for_tokens (parser, tokens);
-
- start_lambda_scope (parmdecl);
-
- /* Parse the assignment-expression. */
- parsed_arg = cp_parser_assignment_expression (parser, /*cast_p=*/false, NULL);
+ parsed_arg
+ = cp_parser_late_parse_one_default_arg (parser, parmdecl,
+ default_arg,
+ TREE_VALUE (parm));
if (parsed_arg == error_mark_node)
{
- cp_parser_pop_lexer (parser);
continue;
}
- if (!processing_template_decl)
- parsed_arg = check_default_argument (TREE_VALUE (parm), parsed_arg);
-
TREE_PURPOSE (parm) = parsed_arg;
/* Update any instantiations we've already created. */
for (insts = DEFARG_INSTANTIATIONS (default_arg), ix = 0;
VEC_iterate (tree, insts, ix, copy); ix++)
TREE_PURPOSE (copy) = parsed_arg;
-
- finish_lambda_scope ();
-
- /* If the token stream has not been completely used up, then
- there was extra junk after the end of the default
- argument. */
- if (!cp_lexer_next_token_is (parser->lexer, CPP_EOF))
- cp_parser_error (parser, "expected %<,%>");
-
- /* Revert to the main lexer. */
- cp_parser_pop_lexer (parser);
}
pop_defarg_context ();
decl_specs->conflicting_specifiers_p = true;
}
-/* Update the DECL_SPECS to reflect the TYPE_SPEC. If USER_DEFINED_P
- is true, the type is a user-defined type; otherwise it is a
- built-in type specified by a keyword. */
+/* Update the DECL_SPECS to reflect the TYPE_SPEC. If TYPE_DEFINITION_P
+ is true, the type is a class or enum definition. */
static void
cp_parser_set_decl_spec_type (cp_decl_specifier_seq *decl_specs,
tree type_spec,
location_t location,
- bool user_defined_p)
+ bool type_definition_p)
{
decl_specs->any_specifiers_p = true;
declarations so that G++ can work with system headers that are not
C++-safe. */
if (decl_specs->specs[(int) ds_typedef]
- && !user_defined_p
+ && !type_definition_p
&& (type_spec == boolean_type_node
|| type_spec == char16_type_node
|| type_spec == char32_type_node
if (!decl_specs->type)
{
decl_specs->type = type_spec;
- decl_specs->user_defined_type_p = false;
+ decl_specs->type_definition_p = false;
decl_specs->type_location = location;
}
}
else
{
decl_specs->type = type_spec;
- decl_specs->user_defined_type_p = user_defined_p;
+ decl_specs->type_definition_p = type_definition_p;
decl_specs->redefined_builtin_type = NULL_TREE;
decl_specs->type_location = location;
}
case RT_AT_THROW:
cp_parser_error (parser, "expected %<@throw%>");
return;
+ case RT_TRANSACTION_ATOMIC:
+ cp_parser_error (parser, "expected %<__transaction_atomic%>");
+ return;
+ case RT_TRANSACTION_RELAXED:
+ cp_parser_error (parser, "expected %<__transaction_relaxed%>");
+ return;
default:
break;
}
|| token->type == CPP_COLON
/* A function-try-block begins with `try'. */
|| token->keyword == RID_TRY
+ /* A function-transaction-block begins with `__transaction_atomic'
+ or `__transaction_relaxed'. */
+ || token->keyword == RID_TRANSACTION_ATOMIC
+ || token->keyword == RID_TRANSACTION_RELAXED
/* The named return value extension begins with `return'. */
|| token->keyword == RID_RETURN);
}
static void
cp_parser_check_class_key (enum tag_types class_key, tree type)
{
+ if (type == error_mark_node)
+ return;
if ((TREE_CODE (type) == UNION_TYPE) != (class_key == union_type))
- permerror (input_location, "%qs tag used in naming %q#T",
- class_key == union_type ? "union"
- : class_key == record_type ? "struct" : "class",
- type);
+ {
+ permerror (input_location, "%qs tag used in naming %q#T",
+ class_key == union_type ? "union"
+ : class_key == record_type ? "struct" : "class",
+ type);
+ inform (DECL_SOURCE_LOCATION (TYPE_NAME (type)),
+ "%q#T was previously declared here", type);
+ }
}
/* Issue an error message if DECL is redeclared with different
}
}
-/* Begin parsing tentatively. We always save tokens while parsing
- tentatively so that if the tentative parsing fails we can restore the
- tokens. */
-
-static void
-cp_parser_parse_tentatively (cp_parser* parser)
-{
- /* Enter a new parsing context. */
- parser->context = cp_parser_context_new (parser->context);
- /* Begin saving tokens. */
- cp_lexer_save_tokens (parser->lexer);
- /* In order to avoid repetitive access control error messages,
- access checks are queued up until we are no longer parsing
- tentatively. */
- push_deferring_access_checks (dk_deferred);
-}
-
-/* Commit to the currently active tentative parse. */
+/* Like above, for caching a default argument or NSDMI. Both of these are
+ terminated by a non-nested comma, but it can be unclear whether or not a
+ comma is nested in a template argument list unless we do more parsing.
+ In order to handle this ambiguity, when we encounter a ',' after a '<'
+ we try to parse what follows as a parameter-declaration-list (in the
+ case of a default argument) or a member-declarator (in the case of an
+ NSDMI). If that succeeds, then we stop caching. */
-static void
-cp_parser_commit_to_tentative_parse (cp_parser* parser)
+static tree
+cp_parser_cache_defarg (cp_parser *parser, bool nsdmi)
{
- cp_parser_context *context;
- cp_lexer *lexer;
+ unsigned depth = 0;
+ int maybe_template_id = 0;
+ cp_token *first_token;
+ cp_token *token;
+ tree default_argument;
- /* Mark all of the levels as committed. */
- lexer = parser->lexer;
- for (context = parser->context; context->next; context = context->next)
+ /* Add tokens until we have processed the entire default
+ argument. We add the range [first_token, token). */
+ first_token = cp_lexer_peek_token (parser->lexer);
+ if (first_token->type == CPP_OPEN_BRACE)
{
- if (context->status == CP_PARSER_STATUS_KIND_COMMITTED)
- break;
- context->status = CP_PARSER_STATUS_KIND_COMMITTED;
- while (!cp_lexer_saving_tokens (lexer))
- lexer = lexer->next;
- cp_lexer_commit_tokens (lexer);
+ /* For list-initialization, this is straightforward. */
+ cp_parser_cache_group (parser, CPP_CLOSE_BRACE, /*depth=*/0);
+ token = cp_lexer_peek_token (parser->lexer);
}
-}
+ else while (true)
+ {
+ bool done = false;
+
+ /* Peek at the next token. */
+ token = cp_lexer_peek_token (parser->lexer);
+ /* What we do depends on what token we have. */
+ switch (token->type)
+ {
+ /* In valid code, a default argument must be
+ immediately followed by a `,' `)', or `...'. */
+ case CPP_COMMA:
+ if (depth == 0 && maybe_template_id)
+ {
+ /* If we've seen a '<', we might be in a
+ template-argument-list. Until Core issue 325 is
+ resolved, we don't know how this situation ought
+ to be handled, so try to DTRT. We check whether
+ what comes after the comma is a valid parameter
+ declaration list. If it is, then the comma ends
+ the default argument; otherwise the default
+ argument continues. */
+ bool error = false;
+ tree t;
+
+ /* Set ITALP so cp_parser_parameter_declaration_list
+ doesn't decide to commit to this parse. */
+ bool saved_italp = parser->in_template_argument_list_p;
+ parser->in_template_argument_list_p = true;
+
+ cp_parser_parse_tentatively (parser);
+ cp_lexer_consume_token (parser->lexer);
+
+ if (nsdmi)
+ {
+ int ctor_dtor_or_conv_p;
+ cp_parser_declarator (parser, CP_PARSER_DECLARATOR_NAMED,
+ &ctor_dtor_or_conv_p,
+ /*parenthesized_p=*/NULL,
+ /*member_p=*/true);
+ }
+ else
+ {
+ begin_scope (sk_function_parms, NULL_TREE);
+ cp_parser_parameter_declaration_list (parser, &error);
+ for (t = current_binding_level->names; t; t = DECL_CHAIN (t))
+ pop_binding (DECL_NAME (t), t);
+ leave_scope ();
+ }
+ if (!cp_parser_error_occurred (parser) && !error)
+ done = true;
+ cp_parser_abort_tentative_parse (parser);
+
+ parser->in_template_argument_list_p = saved_italp;
+ break;
+ }
+ case CPP_CLOSE_PAREN:
+ case CPP_ELLIPSIS:
+ /* If we run into a non-nested `;', `}', or `]',
+ then the code is invalid -- but the default
+ argument is certainly over. */
+ case CPP_SEMICOLON:
+ case CPP_CLOSE_BRACE:
+ case CPP_CLOSE_SQUARE:
+ if (depth == 0)
+ done = true;
+ /* Update DEPTH, if necessary. */
+ else if (token->type == CPP_CLOSE_PAREN
+ || token->type == CPP_CLOSE_BRACE
+ || token->type == CPP_CLOSE_SQUARE)
+ --depth;
+ break;
+
+ case CPP_OPEN_PAREN:
+ case CPP_OPEN_SQUARE:
+ case CPP_OPEN_BRACE:
+ ++depth;
+ break;
+
+ case CPP_LESS:
+ if (depth == 0)
+ /* This might be the comparison operator, or it might
+ start a template argument list. */
+ ++maybe_template_id;
+ break;
+
+ case CPP_RSHIFT:
+ if (cxx_dialect == cxx98)
+ break;
+ /* Fall through for C++0x, which treats the `>>'
+ operator like two `>' tokens in certain
+ cases. */
+
+ case CPP_GREATER:
+ if (depth == 0)
+ {
+ /* This might be an operator, or it might close a
+ template argument list. But if a previous '<'
+ started a template argument list, this will have
+ closed it, so we can't be in one anymore. */
+ maybe_template_id -= 1 + (token->type == CPP_RSHIFT);
+ if (maybe_template_id < 0)
+ maybe_template_id = 0;
+ }
+ break;
+
+ /* If we run out of tokens, issue an error message. */
+ case CPP_EOF:
+ case CPP_PRAGMA_EOL:
+ error_at (token->location, "file ends in default argument");
+ done = true;
+ break;
+
+ case CPP_NAME:
+ case CPP_SCOPE:
+ /* In these cases, we should look for template-ids.
+ For example, if the default argument is
+ `X<int, double>()', we need to do name lookup to
+ figure out whether or not `X' is a template; if
+ so, the `,' does not end the default argument.
+
+ That is not yet done. */
+ break;
+
+ default:
+ break;
+ }
+
+ /* If we've reached the end, stop. */
+ if (done)
+ break;
+
+ /* Add the token to the token block. */
+ token = cp_lexer_consume_token (parser->lexer);
+ }
+
+ /* Create a DEFAULT_ARG to represent the unparsed default
+ argument. */
+ default_argument = make_node (DEFAULT_ARG);
+ DEFARG_TOKENS (default_argument)
+ = cp_token_cache_new (first_token, token);
+ DEFARG_INSTANTIATIONS (default_argument) = NULL;
+
+ return default_argument;
+}
+
+/* Begin parsing tentatively. We always save tokens while parsing
+ tentatively so that if the tentative parsing fails we can restore the
+ tokens. */
+
+static void
+cp_parser_parse_tentatively (cp_parser* parser)
+{
+ /* Enter a new parsing context. */
+ parser->context = cp_parser_context_new (parser->context);
+ /* Begin saving tokens. */
+ cp_lexer_save_tokens (parser->lexer);
+ /* In order to avoid repetitive access control error messages,
+ access checks are queued up until we are no longer parsing
+ tentatively. */
+ push_deferring_access_checks (dk_deferred);
+}
+
+/* Commit to the currently active tentative parse. */
+
+static void
+cp_parser_commit_to_tentative_parse (cp_parser* parser)
+{
+ cp_parser_context *context;
+ cp_lexer *lexer;
+
+ /* Mark all of the levels as committed. */
+ lexer = parser->lexer;
+ for (context = parser->context; context->next; context = context->next)
+ {
+ if (context->status == CP_PARSER_STATUS_KIND_COMMITTED)
+ break;
+ context->status = CP_PARSER_STATUS_KIND_COMMITTED;
+ while (!cp_lexer_saving_tokens (lexer))
+ lexer = lexer->next;
+ cp_lexer_commit_tokens (lexer);
+ }
+}
/* Abort the currently active tentative parse. All consumed tokens
will be rolled back, and no diagnostics will be issued. */
/* If the next token is `extern' and the following token is a string
literal, then we have a linkage specification. */
if (token->keyword == RID_EXTERN
- && cp_parser_is_string_literal (cp_lexer_peek_nth_token (parser->lexer, 2)))
+ && cp_parser_is_pure_string_literal
+ (cp_lexer_peek_nth_token (parser->lexer, 2)))
cp_parser_linkage_specification (parser);
/* Handle #pragma, if any. */
else if (token->type == CPP_PRAGMA)
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;
return c;
}
+/* OpenMP 3.1:
+ final ( expression ) */
+
+static tree
+cp_parser_omp_clause_final (cp_parser *parser, tree list, location_t location)
+{
+ tree t, c;
+
+ if (!cp_parser_require (parser, CPP_OPEN_PAREN, RT_OPEN_PAREN))
+ return list;
+
+ t = cp_parser_condition (parser);
+
+ if (t == error_mark_node
+ || !cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN))
+ cp_parser_skip_to_closing_parenthesis (parser, /*recovering=*/true,
+ /*or_comma=*/false,
+ /*consume_paren=*/true);
+
+ check_no_duplicate_clause (list, OMP_CLAUSE_FINAL, "final", location);
+
+ c = build_omp_clause (location, OMP_CLAUSE_FINAL);
+ OMP_CLAUSE_FINAL_EXPR (c) = t;
+ OMP_CLAUSE_CHAIN (c) = list;
+
+ return c;
+}
+
/* OpenMP 2.5:
if ( expression ) */
return c;
}
+/* OpenMP 3.1:
+ mergeable */
+
+static tree
+cp_parser_omp_clause_mergeable (cp_parser *parser ATTRIBUTE_UNUSED,
+ tree list, location_t location)
+{
+ tree c;
+
+ check_no_duplicate_clause (list, OMP_CLAUSE_MERGEABLE, "mergeable",
+ location);
+
+ c = build_omp_clause (location, OMP_CLAUSE_MERGEABLE);
+ OMP_CLAUSE_CHAIN (c) = list;
+ return c;
+}
+
/* OpenMP 2.5:
nowait */
reduction ( reduction-operator : variable-list )
reduction-operator:
- One of: + * - & ^ | && || */
+ One of: + * - & ^ | && ||
+
+ OpenMP 3.1:
+
+ reduction-operator:
+ One of: + * - & ^ | && || min max */
static tree
cp_parser_omp_clause_reduction (cp_parser *parser, tree list)
case CPP_OR_OR:
code = TRUTH_ORIF_EXPR;
break;
+ case CPP_NAME:
+ {
+ tree id = cp_lexer_peek_token (parser->lexer)->u.value;
+ const char *p = IDENTIFIER_POINTER (id);
+
+ if (strcmp (p, "min") == 0)
+ {
+ code = MIN_EXPR;
+ break;
+ }
+ if (strcmp (p, "max") == 0)
+ {
+ code = MAX_EXPR;
+ break;
+ }
+ }
+ /* FALLTHROUGH */
default:
cp_parser_error (parser, "expected %<+%>, %<*%>, %<-%>, %<&%>, %<^%>, "
- "%<|%>, %<&&%>, or %<||%>");
+ "%<|%>, %<&&%>, %<||%>, %<min%> or %<max%>");
resync_fail:
cp_parser_skip_to_closing_parenthesis (parser, /*recovering=*/true,
/*or_comma=*/false,
token->location);
c_name = "default";
break;
+ case PRAGMA_OMP_CLAUSE_FINAL:
+ clauses = cp_parser_omp_clause_final (parser, clauses, token->location);
+ c_name = "final";
+ break;
case PRAGMA_OMP_CLAUSE_FIRSTPRIVATE:
clauses = cp_parser_omp_var_list (parser, OMP_CLAUSE_FIRSTPRIVATE,
clauses);
clauses);
c_name = "lastprivate";
break;
+ case PRAGMA_OMP_CLAUSE_MERGEABLE:
+ clauses = cp_parser_omp_clause_mergeable (parser, clauses,
+ token->location);
+ c_name = "mergeable";
+ break;
case PRAGMA_OMP_CLAUSE_NOWAIT:
clauses = cp_parser_omp_clause_nowait (parser, clauses, token->location);
c_name = "nowait";
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. */
static void
cp_parser_omp_atomic (cp_parser *parser, cp_token *pragma_tok)
{
- tree lhs, rhs;
- enum tree_code code;
+ tree lhs = NULL_TREE, rhs = NULL_TREE, v = NULL_TREE, lhs1 = NULL_TREE;
+ tree rhs1 = NULL_TREE, orig_lhs;
+ enum tree_code code = OMP_ATOMIC, opcode = NOP_EXPR;
+ bool structured_block = false;
+
+ if (cp_lexer_next_token_is (parser->lexer, CPP_NAME))
+ {
+ tree id = cp_lexer_peek_token (parser->lexer)->u.value;
+ const char *p = IDENTIFIER_POINTER (id);
+ 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)
+ cp_lexer_consume_token (parser->lexer);
+ }
cp_parser_require_pragma_eol (parser, pragma_tok);
+ switch (code)
+ {
+ case OMP_ATOMIC_READ:
+ case NOP_EXPR: /* atomic write */
+ v = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ if (!cp_parser_require (parser, CPP_EQ, RT_EQ))
+ goto saw_error;
+ if (code == NOP_EXPR)
+ lhs = cp_parser_expression (parser, /*cast_p=*/false, NULL);
+ else
+ lhs = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/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 (cp_lexer_next_token_is (parser->lexer, CPP_OPEN_BRACE))
+ {
+ cp_lexer_consume_token (parser->lexer);
+ structured_block = true;
+ }
+ else
+ {
+ v = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ if (!cp_parser_require (parser, CPP_EQ, RT_EQ))
+ goto saw_error;
+ }
+ default:
+ break;
+ }
+
+restart:
lhs = cp_parser_unary_expression (parser, /*address_p=*/false,
/*cast_p=*/false, NULL);
+ orig_lhs = lhs;
switch (TREE_CODE (lhs))
{
case ERROR_MARK:
goto saw_error;
- 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 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);
- code = NOP_EXPR;
- break;
- }
- }
+ {
+ /* 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;
+ }
+ }
/* FALLTHRU */
default:
switch (cp_lexer_peek_token (parser->lexer)->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)
+ {
+ enum cp_parser_prec oprec;
+ cp_token *token;
+ cp_lexer_consume_token (parser->lexer);
+ rhs1 = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/false, NULL);
+ if (rhs1 == error_mark_node)
+ goto saw_error;
+ token = cp_lexer_peek_token (parser->lexer);
+ switch (token->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;
+ cp_lexer_consume_token (parser->lexer);
+ goto restart;
+ }
+ cp_parser_error (parser,
+ "invalid form of %<#pragma omp atomic%>");
+ goto saw_error;
+ case CPP_MULT:
+ opcode = MULT_EXPR;
+ break;
+ case CPP_DIV:
+ opcode = TRUNC_DIV_EXPR;
+ break;
+ case CPP_PLUS:
+ opcode = PLUS_EXPR;
+ break;
+ case CPP_MINUS:
+ opcode = MINUS_EXPR;
+ break;
+ case CPP_LSHIFT:
+ opcode = LSHIFT_EXPR;
+ break;
+ case CPP_RSHIFT:
+ opcode = RSHIFT_EXPR;
+ break;
+ case CPP_AND:
+ opcode = BIT_AND_EXPR;
+ break;
+ case CPP_OR:
+ opcode = BIT_IOR_EXPR;
+ break;
+ case CPP_XOR:
+ opcode = BIT_XOR_EXPR;
+ break;
+ default:
+ cp_parser_error (parser,
+ "invalid operator for %<#pragma omp atomic%>");
+ goto saw_error;
+ }
+ oprec = TOKEN_PRECEDENCE (token);
+ gcc_assert (oprec != PREC_NOT_OPERATOR);
+ if (commutative_tree_code (opcode))
+ oprec = (enum cp_parser_prec) (oprec - 1);
+ cp_lexer_consume_token (parser->lexer);
+ rhs = cp_parser_binary_expression (parser, false, false,
+ oprec, NULL);
+ if (rhs == error_mark_node)
+ goto saw_error;
+ goto stmt_done;
+ }
+ /* FALLTHROUGH */
default:
cp_parser_error (parser,
"invalid operator for %<#pragma omp atomic%>");
goto saw_error;
break;
}
- finish_omp_atomic (code, lhs, rhs);
- cp_parser_consume_semicolon_at_end_of_statement (parser);
+stmt_done:
+ if (structured_block && code == OMP_ATOMIC_CAPTURE_NEW)
+ {
+ if (!cp_parser_require (parser, CPP_SEMICOLON, RT_SEMICOLON))
+ goto saw_error;
+ v = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/false, NULL);
+ if (v == error_mark_node)
+ goto saw_error;
+ if (!cp_parser_require (parser, CPP_EQ, RT_EQ))
+ goto saw_error;
+ lhs1 = cp_parser_unary_expression (parser, /*address_p=*/false,
+ /*cast_p=*/false, NULL);
+ if (lhs1 == error_mark_node)
+ goto saw_error;
+ }
+ if (structured_block)
+ {
+ cp_parser_consume_semicolon_at_end_of_statement (parser);
+ cp_parser_require (parser, CPP_CLOSE_BRACE, RT_CLOSE_BRACE);
+ }
+done:
+ finish_omp_atomic (code, opcode, lhs, rhs, v, lhs1, rhs1);
+ if (!structured_block)
+ cp_parser_consume_semicolon_at_end_of_statement (parser);
return;
saw_error:
cp_parser_skip_to_end_of_block_or_statement (parser);
+ if (structured_block)
+ {
+ if (cp_lexer_next_token_is (parser->lexer, CPP_CLOSE_BRACE))
+ cp_lexer_consume_token (parser->lexer);
+ else if (code == OMP_ATOMIC_CAPTURE_NEW)
+ {
+ cp_parser_skip_to_end_of_block_or_statement (parser);
+ if (cp_lexer_next_token_is (parser->lexer, CPP_CLOSE_BRACE))
+ cp_lexer_consume_token (parser->lexer);
+ }
+ }
}
&is_direct_init,
&is_non_constant_init);
- if (auto_node && describable_type (init))
+ if (auto_node)
{
TREE_TYPE (decl)
= do_auto_deduction (TREE_TYPE (decl), init,
{
/* If decl is an iterator, preserve the operator on decl
until finish_omp_for. */
- if (decl
- && ((type_dependent_expression_p (decl)
- && !POINTER_TYPE_P (TREE_TYPE (decl)))
- || CLASS_TYPE_P (TREE_TYPE (decl))))
- incr = cp_parser_omp_for_incr (parser, decl);
+ if (real_decl
+ && ((processing_template_decl
+ && !POINTER_TYPE_P (TREE_TYPE (real_decl)))
+ || CLASS_TYPE_P (TREE_TYPE (real_decl))))
+ incr = cp_parser_omp_for_incr (parser, real_decl);
else
incr = cp_parser_expression (parser, false, NULL);
}
| (1u << PRAGMA_OMP_CLAUSE_DEFAULT) \
| (1u << PRAGMA_OMP_CLAUSE_PRIVATE) \
| (1u << PRAGMA_OMP_CLAUSE_FIRSTPRIVATE) \
- | (1u << PRAGMA_OMP_CLAUSE_SHARED))
+ | (1u << PRAGMA_OMP_CLAUSE_SHARED) \
+ | (1u << PRAGMA_OMP_CLAUSE_FINAL) \
+ | (1u << PRAGMA_OMP_CLAUSE_MERGEABLE))
static tree
cp_parser_omp_task (cp_parser *parser, cp_token *pragma_tok)
finish_omp_taskwait ();
}
+/* OpenMP 3.1:
+ # pragma omp taskyield new-line */
+
+static void
+cp_parser_omp_taskyield (cp_parser *parser, cp_token *pragma_tok)
+{
+ cp_parser_require_pragma_eol (parser, pragma_tok);
+ finish_omp_taskyield ();
+}
+
/* OpenMP 2.5:
# pragma omp threadprivate (variable-list) */
SET_EXPR_LOCATION (stmt, pragma_tok->location);
}
\f
+/* Transactional Memory parsing routines. */
+
+/* Parse a transaction attribute.
+
+ txn-attribute:
+ attribute
+ [ [ identifier ] ]
+
+ ??? Simplify this when C++0x bracket attributes are
+ implemented properly. */
+
+static tree
+cp_parser_txn_attribute_opt (cp_parser *parser)
+{
+ cp_token *token;
+ tree attr_name, attr = NULL;
+
+ if (cp_lexer_next_token_is_keyword (parser->lexer, RID_ATTRIBUTE))
+ return cp_parser_attributes_opt (parser);
+
+ if (cp_lexer_next_token_is_not (parser->lexer, CPP_OPEN_SQUARE))
+ return NULL_TREE;
+ cp_lexer_consume_token (parser->lexer);
+ if (!cp_parser_require (parser, CPP_OPEN_SQUARE, RT_OPEN_SQUARE))
+ goto error1;
+
+ token = cp_lexer_peek_token (parser->lexer);
+ if (token->type == CPP_NAME || token->type == CPP_KEYWORD)
+ {
+ token = cp_lexer_consume_token (parser->lexer);
+
+ attr_name = (token->type == CPP_KEYWORD
+ /* For keywords, use the canonical spelling,
+ not the parsed identifier. */
+ ? ridpointers[(int) token->keyword]
+ : token->u.value);
+ attr = build_tree_list (attr_name, NULL_TREE);
+ }
+ else
+ cp_parser_error (parser, "expected identifier");
+
+ cp_parser_require (parser, CPP_CLOSE_SQUARE, RT_CLOSE_SQUARE);
+ error1:
+ cp_parser_require (parser, CPP_CLOSE_SQUARE, RT_CLOSE_SQUARE);
+ return attr;
+}
+
+/* Parse a __transaction_atomic or __transaction_relaxed statement.
+
+ transaction-statement:
+ __transaction_atomic txn-attribute[opt] txn-noexcept-spec[opt]
+ compound-statement
+ __transaction_relaxed txn-noexcept-spec[opt] compound-statement
+*/
+
+static tree
+cp_parser_transaction (cp_parser *parser, enum rid keyword)
+{
+ unsigned char old_in = parser->in_transaction;
+ unsigned char this_in = 1, new_in;
+ cp_token *token;
+ tree stmt, attrs, noex;
+
+ gcc_assert (keyword == RID_TRANSACTION_ATOMIC
+ || keyword == RID_TRANSACTION_RELAXED);
+ token = cp_parser_require_keyword (parser, keyword,
+ (keyword == RID_TRANSACTION_ATOMIC ? RT_TRANSACTION_ATOMIC
+ : RT_TRANSACTION_RELAXED));
+ gcc_assert (token != NULL);
+
+ if (keyword == RID_TRANSACTION_RELAXED)
+ this_in |= TM_STMT_ATTR_RELAXED;
+ else
+ {
+ attrs = cp_parser_txn_attribute_opt (parser);
+ if (attrs)
+ this_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER);
+ }
+
+ /* Parse a noexcept specification. */
+ noex = cp_parser_noexcept_specification_opt (parser, true, NULL, true);
+
+ /* Keep track if we're in the lexical scope of an outer transaction. */
+ new_in = this_in | (old_in & TM_STMT_ATTR_OUTER);
+
+ stmt = begin_transaction_stmt (token->location, NULL, this_in);
+
+ parser->in_transaction = new_in;
+ cp_parser_compound_statement (parser, NULL, false, false);
+ parser->in_transaction = old_in;
+
+ finish_transaction_stmt (stmt, NULL, this_in, noex);
+
+ return stmt;
+}
+
+/* Parse a __transaction_atomic or __transaction_relaxed expression.
+
+ transaction-expression:
+ __transaction_atomic txn-noexcept-spec[opt] ( expression )
+ __transaction_relaxed txn-noexcept-spec[opt] ( expression )
+*/
+
+static tree
+cp_parser_transaction_expression (cp_parser *parser, enum rid keyword)
+{
+ unsigned char old_in = parser->in_transaction;
+ unsigned char this_in = 1;
+ cp_token *token;
+ tree expr, noex;
+ bool noex_expr;
+
+ gcc_assert (keyword == RID_TRANSACTION_ATOMIC
+ || keyword == RID_TRANSACTION_RELAXED);
+
+ if (!flag_tm)
+ error (keyword == RID_TRANSACTION_RELAXED
+ ? G_("%<__transaction_relaxed%> without transactional memory "
+ "support enabled")
+ : G_("%<__transaction_atomic%> without transactional memory "
+ "support enabled"));
+
+ token = cp_parser_require_keyword (parser, keyword,
+ (keyword == RID_TRANSACTION_ATOMIC ? RT_TRANSACTION_ATOMIC
+ : RT_TRANSACTION_RELAXED));
+ gcc_assert (token != NULL);
+
+ if (keyword == RID_TRANSACTION_RELAXED)
+ this_in |= TM_STMT_ATTR_RELAXED;
+
+ /* Set this early. This might mean that we allow transaction_cancel in
+ an expression that we find out later actually has to be a constexpr.
+ However, we expect that cxx_constant_value will be able to deal with
+ this; also, if the noexcept has no constexpr, then what we parse next
+ really is a transaction's body. */
+ parser->in_transaction = this_in;
+
+ /* Parse a noexcept specification. */
+ noex = cp_parser_noexcept_specification_opt (parser, false, &noex_expr,
+ true);
+
+ if (!noex || !noex_expr
+ || cp_lexer_peek_token (parser->lexer)->type == CPP_OPEN_PAREN)
+ {
+ cp_parser_require (parser, CPP_OPEN_PAREN, RT_OPEN_PAREN);
+
+ expr = cp_parser_expression (parser, /*cast_p=*/false, NULL);
+ finish_parenthesized_expr (expr);
+
+ cp_parser_require (parser, CPP_CLOSE_PAREN, RT_CLOSE_PAREN);
+ }
+ else
+ {
+ /* The only expression that is available got parsed for the noexcept
+ already. noexcept is true then. */
+ expr = noex;
+ noex = boolean_true_node;
+ }
+
+ expr = build_transaction_expr (token->location, expr, this_in, noex);
+ parser->in_transaction = old_in;
+
+ if (cp_parser_non_integral_constant_expression (parser, NIC_TRANSACTION))
+ return error_mark_node;
+
+ return (flag_tm ? expr : error_mark_node);
+}
+
+/* Parse a function-transaction-block.
+
+ function-transaction-block:
+ __transaction_atomic txn-attribute[opt] ctor-initializer[opt]
+ function-body
+ __transaction_atomic txn-attribute[opt] function-try-block
+ __transaction_relaxed ctor-initializer[opt] function-body
+ __transaction_relaxed function-try-block
+*/
+
+static bool
+cp_parser_function_transaction (cp_parser *parser, enum rid keyword)
+{
+ unsigned char old_in = parser->in_transaction;
+ unsigned char new_in = 1;
+ tree compound_stmt, stmt, attrs;
+ bool ctor_initializer_p;
+ cp_token *token;
+
+ gcc_assert (keyword == RID_TRANSACTION_ATOMIC
+ || keyword == RID_TRANSACTION_RELAXED);
+ token = cp_parser_require_keyword (parser, keyword,
+ (keyword == RID_TRANSACTION_ATOMIC ? RT_TRANSACTION_ATOMIC
+ : RT_TRANSACTION_RELAXED));
+ gcc_assert (token != NULL);
+
+ if (keyword == RID_TRANSACTION_RELAXED)
+ new_in |= TM_STMT_ATTR_RELAXED;
+ else
+ {
+ attrs = cp_parser_txn_attribute_opt (parser);
+ if (attrs)
+ new_in |= parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER);
+ }
+
+ stmt = begin_transaction_stmt (token->location, &compound_stmt, new_in);
+
+ parser->in_transaction = new_in;
+
+ if (cp_lexer_next_token_is_keyword (parser->lexer, RID_TRY))
+ ctor_initializer_p = cp_parser_function_try_block (parser);
+ else
+ ctor_initializer_p
+ = cp_parser_ctor_initializer_opt_and_function_body (parser);
+
+ parser->in_transaction = old_in;
+
+ finish_transaction_stmt (stmt, compound_stmt, new_in, NULL_TREE);
+
+ return ctor_initializer_p;
+}
+
+/* Parse a __transaction_cancel statement.
+
+ cancel-statement:
+ __transaction_cancel txn-attribute[opt] ;
+ __transaction_cancel txn-attribute[opt] throw-expression ;
+
+ ??? Cancel and throw is not yet implemented. */
+
+static tree
+cp_parser_transaction_cancel (cp_parser *parser)
+{
+ cp_token *token;
+ bool is_outer = false;
+ tree stmt, attrs;
+
+ token = cp_parser_require_keyword (parser, RID_TRANSACTION_CANCEL,
+ RT_TRANSACTION_CANCEL);
+ gcc_assert (token != NULL);
+
+ attrs = cp_parser_txn_attribute_opt (parser);
+ if (attrs)
+ is_outer = (parse_tm_stmt_attr (attrs, TM_STMT_ATTR_OUTER) != 0);
+
+ /* ??? Parse cancel-and-throw here. */
+
+ cp_parser_require (parser, CPP_SEMICOLON, RT_SEMICOLON);
+
+ if (!flag_tm)
+ {
+ error_at (token->location, "%<__transaction_cancel%> without "
+ "transactional memory support enabled");
+ return error_mark_node;
+ }
+ else if (parser->in_transaction & TM_STMT_ATTR_RELAXED)
+ {
+ error_at (token->location, "%<__transaction_cancel%> within a "
+ "%<__transaction_relaxed%>");
+ return error_mark_node;
+ }
+ else if (is_outer)
+ {
+ if ((parser->in_transaction & TM_STMT_ATTR_OUTER) == 0
+ && !is_tm_may_cancel_outer (current_function_decl))
+ {
+ error_at (token->location, "outer %<__transaction_cancel%> not "
+ "within outer %<__transaction_atomic%>");
+ error_at (token->location,
+ " or a %<transaction_may_cancel_outer%> function");
+ return error_mark_node;
+ }
+ }
+ else if (parser->in_transaction == 0)
+ {
+ error_at (token->location, "%<__transaction_cancel%> not within "
+ "%<__transaction_atomic%>");
+ return error_mark_node;
+ }
+
+ stmt = build_tm_abort_call (token->location, is_outer);
+ add_stmt (stmt);
+ finish_stmt ();
+
+ return stmt;
+}
+\f
/* The parser. */
static GTY (()) cp_parser *the_parser;
}
break;
+ case PRAGMA_OMP_TASKYIELD:
+ switch (context)
+ {
+ case pragma_compound:
+ cp_parser_omp_taskyield (parser, pragma_tok);
+ return false;
+ case pragma_stmt:
+ error_at (pragma_tok->location,
+ "%<#pragma omp taskyield%> may only be "
+ "used in compound statements");
+ break;
+ default:
+ goto bad_stmt;
+ }
+ break;
+
case PRAGMA_OMP_THREADPRIVATE:
cp_parser_omp_threadprivate (parser, pragma_tok);
return false;
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