/* Separate lexical analyzer for GNU C++.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
+ Free Software Foundation, Inc.
Hacked by Michael Tiemann (tiemann@cygnus.com)
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to
-the Free Software Foundation, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* This file is the lexical analyzer for GNU C++. */
#include "cp-tree.h"
#include "cpplib.h"
#include "flags.h"
-#include "c-pragma.h"
+#include "c-family/c-pragma.h"
#include "toplev.h"
#include "output.h"
#include "tm_p.h"
static struct impl_files *impl_file_chain;
+/* True if we saw "#pragma GCC java_exceptions". */
+bool pragma_java_exceptions;
\f
void
cxx_finish (void)
}
/* A mapping from tree codes to operator name information. */
-operator_name_info_t operator_name_info[(int) LAST_CPLUS_TREE_CODE];
+operator_name_info_t operator_name_info[(int) MAX_TREE_CODES];
/* Similar, but for assignment operators. */
-operator_name_info_t assignment_operator_name_info[(int) LAST_CPLUS_TREE_CODE];
+operator_name_info_t assignment_operator_name_info[(int) MAX_TREE_CODES];
/* Initialize data structures that keep track of operator names. */
= "(round %=)";
}
-/* The reserved keyword table. */
-struct resword
-{
- const char *const word;
- ENUM_BITFIELD(rid) const rid : 16;
- const unsigned int disable : 16;
-};
-
-/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
- _true_. */
-#define D_EXT 0x01 /* GCC extension */
-#define D_ASM 0x02 /* in C99, but has a switch to turn it off */
-#define D_OBJC 0x04 /* Objective C++ only */
-
-CONSTRAINT(ridbits_fit, RID_LAST_MODIFIER < sizeof(unsigned long) * CHAR_BIT);
-
-static const struct resword reswords[] =
-{
- { "_Complex", RID_COMPLEX, 0 },
- { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
- { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
- { "__alignof", RID_ALIGNOF, 0 },
- { "__alignof__", RID_ALIGNOF, 0 },
- { "__asm", RID_ASM, 0 },
- { "__asm__", RID_ASM, 0 },
- { "__attribute", RID_ATTRIBUTE, 0 },
- { "__attribute__", RID_ATTRIBUTE, 0 },
- { "__builtin_offsetof", RID_OFFSETOF, 0 },
- { "__builtin_va_arg", RID_VA_ARG, 0 },
- { "__complex", RID_COMPLEX, 0 },
- { "__complex__", RID_COMPLEX, 0 },
- { "__const", RID_CONST, 0 },
- { "__const__", RID_CONST, 0 },
- { "__extension__", RID_EXTENSION, 0 },
- { "__func__", RID_C99_FUNCTION_NAME, 0 },
- { "__imag", RID_IMAGPART, 0 },
- { "__imag__", RID_IMAGPART, 0 },
- { "__inline", RID_INLINE, 0 },
- { "__inline__", RID_INLINE, 0 },
- { "__label__", RID_LABEL, 0 },
- { "__null", RID_NULL, 0 },
- { "__real", RID_REALPART, 0 },
- { "__real__", RID_REALPART, 0 },
- { "__restrict", RID_RESTRICT, 0 },
- { "__restrict__", RID_RESTRICT, 0 },
- { "__signed", RID_SIGNED, 0 },
- { "__signed__", RID_SIGNED, 0 },
- { "__thread", RID_THREAD, 0 },
- { "__typeof", RID_TYPEOF, 0 },
- { "__typeof__", RID_TYPEOF, 0 },
- { "__volatile", RID_VOLATILE, 0 },
- { "__volatile__", RID_VOLATILE, 0 },
- { "asm", RID_ASM, D_ASM },
- { "auto", RID_AUTO, 0 },
- { "bool", RID_BOOL, 0 },
- { "break", RID_BREAK, 0 },
- { "case", RID_CASE, 0 },
- { "catch", RID_CATCH, 0 },
- { "char", RID_CHAR, 0 },
- { "class", RID_CLASS, 0 },
- { "const", RID_CONST, 0 },
- { "const_cast", RID_CONSTCAST, 0 },
- { "continue", RID_CONTINUE, 0 },
- { "default", RID_DEFAULT, 0 },
- { "delete", RID_DELETE, 0 },
- { "do", RID_DO, 0 },
- { "double", RID_DOUBLE, 0 },
- { "dynamic_cast", RID_DYNCAST, 0 },
- { "else", RID_ELSE, 0 },
- { "enum", RID_ENUM, 0 },
- { "explicit", RID_EXPLICIT, 0 },
- { "export", RID_EXPORT, 0 },
- { "extern", RID_EXTERN, 0 },
- { "false", RID_FALSE, 0 },
- { "float", RID_FLOAT, 0 },
- { "for", RID_FOR, 0 },
- { "friend", RID_FRIEND, 0 },
- { "goto", RID_GOTO, 0 },
- { "if", RID_IF, 0 },
- { "inline", RID_INLINE, 0 },
- { "int", RID_INT, 0 },
- { "long", RID_LONG, 0 },
- { "mutable", RID_MUTABLE, 0 },
- { "namespace", RID_NAMESPACE, 0 },
- { "new", RID_NEW, 0 },
- { "operator", RID_OPERATOR, 0 },
- { "private", RID_PRIVATE, 0 },
- { "protected", RID_PROTECTED, 0 },
- { "public", RID_PUBLIC, 0 },
- { "register", RID_REGISTER, 0 },
- { "reinterpret_cast", RID_REINTCAST, 0 },
- { "return", RID_RETURN, 0 },
- { "short", RID_SHORT, 0 },
- { "signed", RID_SIGNED, 0 },
- { "sizeof", RID_SIZEOF, 0 },
- { "static", RID_STATIC, 0 },
- { "static_cast", RID_STATCAST, 0 },
- { "struct", RID_STRUCT, 0 },
- { "switch", RID_SWITCH, 0 },
- { "template", RID_TEMPLATE, 0 },
- { "this", RID_THIS, 0 },
- { "throw", RID_THROW, 0 },
- { "true", RID_TRUE, 0 },
- { "try", RID_TRY, 0 },
- { "typedef", RID_TYPEDEF, 0 },
- { "typename", RID_TYPENAME, 0 },
- { "typeid", RID_TYPEID, 0 },
- { "typeof", RID_TYPEOF, D_ASM|D_EXT },
- { "union", RID_UNION, 0 },
- { "unsigned", RID_UNSIGNED, 0 },
- { "using", RID_USING, 0 },
- { "virtual", RID_VIRTUAL, 0 },
- { "void", RID_VOID, 0 },
- { "volatile", RID_VOLATILE, 0 },
- { "wchar_t", RID_WCHAR, 0 },
- { "while", RID_WHILE, 0 },
-
- /* The remaining keywords are specific to Objective-C++. NB:
- All of them will remain _disabled_, since they are context-
- sensitive. */
-
- /* These ObjC keywords are recognized only immediately after
- an '@'. NB: The following C++ keywords double as
- ObjC keywords in this context: RID_CLASS, RID_PRIVATE,
- RID_PROTECTED, RID_PUBLIC, RID_THROW, RID_TRY and RID_CATCH. */
- { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
- { "defs", RID_AT_DEFS, D_OBJC },
- { "encode", RID_AT_ENCODE, D_OBJC },
- { "end", RID_AT_END, D_OBJC },
- { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
- { "interface", RID_AT_INTERFACE, D_OBJC },
- { "protocol", RID_AT_PROTOCOL, D_OBJC },
- { "selector", RID_AT_SELECTOR, D_OBJC },
- { "finally", RID_AT_FINALLY, D_OBJC },
- { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
- /* These are recognized only in protocol-qualifier context. */
- { "bycopy", RID_BYCOPY, D_OBJC },
- { "byref", RID_BYREF, D_OBJC },
- { "in", RID_IN, D_OBJC },
- { "inout", RID_INOUT, D_OBJC },
- { "oneway", RID_ONEWAY, D_OBJC },
- { "out", RID_OUT, D_OBJC },
-};
+/* Initialize the reserved words. */
void
init_reswords (void)
{
unsigned int i;
tree id;
- int mask = ((flag_no_asm ? D_ASM : 0)
- | D_OBJC
- | (flag_no_gnu_keywords ? D_EXT : 0));
+ int mask = 0;
+
+ if (cxx_dialect != cxx0x)
+ mask |= D_CXX0X;
+ if (flag_no_asm)
+ mask |= D_ASM | D_EXT;
+ if (flag_no_gnu_keywords)
+ mask |= D_EXT;
+
+ /* The Objective-C keywords are all context-dependent. */
+ mask |= D_OBJC;
- ridpointers = ggc_calloc ((int) RID_MAX, sizeof (tree));
- for (i = 0; i < ARRAY_SIZE (reswords); i++)
+ ridpointers = ggc_alloc_cleared_vec_tree ((int) RID_MAX);
+ for (i = 0; i < num_c_common_reswords; i++)
{
- id = get_identifier (reswords[i].word);
- C_RID_CODE (id) = reswords[i].rid;
- ridpointers [(int) reswords[i].rid] = id;
- if (! (reswords[i].disable & mask))
+ if (c_common_reswords[i].disable & D_CONLY)
+ continue;
+ id = get_identifier (c_common_reswords[i].word);
+ C_SET_RID_CODE (id, c_common_reswords[i].rid);
+ ridpointers [(int) c_common_reswords[i].rid] = id;
+ if (! (c_common_reswords[i].disable & mask))
C_IS_RESERVED_WORD (id) = 1;
}
}
bool
cxx_init (void)
{
+ location_t saved_loc;
unsigned int i;
static const enum tree_code stmt_codes[] = {
CTOR_INITIALIZER, TRY_BLOCK, HANDLER,
EH_SPEC_BLOCK, USING_STMT, TAG_DEFN,
IF_STMT, CLEANUP_STMT, FOR_STMT,
- WHILE_STMT, DO_STMT, BREAK_STMT,
- CONTINUE_STMT, SWITCH_STMT, EXPR_STMT
+ RANGE_FOR_STMT, WHILE_STMT, DO_STMT,
+ BREAK_STMT, CONTINUE_STMT, SWITCH_STMT,
+ EXPR_STMT
};
memset (&statement_code_p, 0, sizeof (statement_code_p));
for (i = 0; i < ARRAY_SIZE (stmt_codes); i++)
statement_code_p[stmt_codes[i]] = true;
- /* We cannot just assign to input_filename because it has already
- been initialized and will be used later as an N_BINCL for stabs+
- debugging. */
-#ifdef USE_MAPPED_LOCATION
- push_srcloc (BUILTINS_LOCATION);
-#else
- push_srcloc ("<built-in>", 0);
-#endif
+ saved_loc = input_location;
+ input_location = BUILTINS_LOCATION;
init_reswords ();
init_tree ();
cxx_init_decl_processing ();
- /* The fact that G++ uses COMDAT for many entities (inline
- functions, template instantiations, virtual tables, etc.) mean
- that it is fundamentally unreliable to try to make decisions
- about whether or not to output a particular entity until the end
- of the compilation. However, the inliner requires that functions
- be provided to the back end if they are to be inlined.
- Therefore, we always use unit-at-a-time mode; in that mode, we
- can provide entities to the back end and it will decide what to
- emit based on what is actually needed. */
- flag_unit_at_a_time = 1;
-
if (c_common_init () == false)
{
- pop_srcloc();
+ input_location = saved_loc;
return false;
}
init_repo ();
- pop_srcloc();
+ input_location = saved_loc;
return true;
}
\f
tree result, x;
enum cpp_ttype t;
- t = pragma_lex (&x);
+ t = pragma_lex (&result);
if (t == CPP_STRING)
{
- result = x;
if (pragma_lex (&x) != CPP_EOF)
warning (0, "junk at end of #pragma %s", name);
return result;
}
if (t == CPP_EOF && opt)
- return 0;
+ return NULL_TREE;
error ("invalid #pragma %s", name);
- return (tree)-1;
+ return error_mark_node;
}
static void
struct c_fileinfo *finfo;
const char *filename;
- if (fname == (tree)-1)
+ if (fname == error_mark_node)
return;
else if (fname == 0)
filename = lbasename (input_filename);
else
- filename = ggc_strdup (TREE_STRING_POINTER (fname));
+ filename = TREE_STRING_POINTER (fname);
- finfo = get_fileinfo (filename);
+ finfo = get_fileinfo (input_filename);
if (impl_file_chain == 0)
{
const char *filename;
struct impl_files *ifiles = impl_file_chain;
- if (fname == (tree)-1)
+ if (fname == error_mark_node)
return;
if (fname == 0)
}
else
{
- filename = ggc_strdup (TREE_STRING_POINTER (fname));
-#if 0
- /* We currently cannot give this diagnostic, as we reach this point
- only after cpplib has scanned the entire translation unit, so
- cpp_included always returns true. A plausible fix is to compare
- the current source-location cookie with the first source-location
- cookie (if any) of the filename, but this requires completing the
- --enable-mapped-location project first. See PR 17577. */
- if (cpp_included (parse_in, filename))
+ filename = TREE_STRING_POINTER (fname);
+ if (cpp_included_before (parse_in, filename, input_location))
warning (0, "#pragma implementation for %qs appears after "
"file is included", filename);
-#endif
}
for (; ifiles; ifiles = ifiles->next)
if (ifiles == 0)
{
ifiles = XNEW (struct impl_files);
- ifiles->filename = filename;
+ ifiles->filename = xstrdup (filename);
ifiles->next = impl_file_chain;
impl_file_chain = ifiles;
}
warning (0, "junk at end of #pragma GCC java_exceptions");
choose_personality_routine (lang_java);
+ pragma_java_exceptions = true;
}
/* Issue an error message indicating that the lookup of NAME (an
}
else
{
- error ("%qD was not declared in this scope", name);
+ if (!objc_diagnose_private_ivar (name))
+ {
+ error ("%qD was not declared in this scope", name);
+ suggest_alternatives_for (name);
+ }
/* Prevent repeated error messages by creating a VAR_DECL with
this NAME in the innermost block scope. */
if (current_function_decl)
{
tree decl;
- decl = build_decl (VAR_DECL, name, error_mark_node);
+ decl = build_decl (input_location,
+ VAR_DECL, name, error_mark_node);
DECL_CONTEXT (decl) = current_function_decl;
push_local_binding (name, decl, 0);
/* Mark the variable as used so that we do not get warnings
Note that we have the exact wording of the following message in
the manual (trouble.texi, node "Name lookup"), so they need to
be kept in synch. */
- pedwarn ("there are no arguments to %qD that depend on a template "
- "parameter, so a declaration of %qD must be available",
- name, name);
+ permerror (input_location, "there are no arguments to %qD that depend on a template "
+ "parameter, so a declaration of %qD must be available",
+ name, name);
if (!flag_permissive)
{
static bool hint;
if (!hint)
{
- error ("(if you use %<-fpermissive%>, G++ will accept your "
+ inform (input_location, "(if you use %<-fpermissive%>, G++ will accept your "
"code, but allowing the use of an undeclared name is "
"deprecated)");
hint = true;
return unqualified_name_lookup_error (name);
}
+/* Wrapper around build_lang_decl_loc(). Should gradually move to
+ build_lang_decl_loc() and then rename build_lang_decl_loc() back to
+ build_lang_decl(). */
+
tree
build_lang_decl (enum tree_code code, tree name, tree type)
{
+ return build_lang_decl_loc (input_location, code, name, type);
+}
+
+/* Build a decl from CODE, NAME, TYPE declared at LOC, and then add
+ DECL_LANG_SPECIFIC info to the result. */
+
+tree
+build_lang_decl_loc (location_t loc, enum tree_code code, tree name, tree type)
+{
tree t;
- t = build_decl (code, name, type);
+ t = build_decl (loc, code, name, type);
retrofit_lang_decl (t);
- /* All nesting of C++ functions is lexical; there is never a "static
- chain" in the sense of GNU C nested functions. */
- if (code == FUNCTION_DECL)
- DECL_NO_STATIC_CHAIN (t) = 1;
-
return t;
}
/* Add DECL_LANG_SPECIFIC info to T. Called from build_lang_decl
- and pushdecl (for functions generated by the backend). */
+ and pushdecl (for functions generated by the back end). */
void
retrofit_lang_decl (tree t)
{
struct lang_decl *ld;
size_t size;
-
- if (CAN_HAVE_FULL_LANG_DECL_P (t))
- size = sizeof (struct lang_decl);
+ int sel;
+
+ if (TREE_CODE (t) == FUNCTION_DECL)
+ sel = 1, size = sizeof (struct lang_decl_fn);
+ else if (TREE_CODE (t) == NAMESPACE_DECL)
+ sel = 2, size = sizeof (struct lang_decl_ns);
+ else if (TREE_CODE (t) == PARM_DECL)
+ sel = 3, size = sizeof (struct lang_decl_parm);
+ else if (LANG_DECL_HAS_MIN (t))
+ sel = 0, size = sizeof (struct lang_decl_min);
else
- size = sizeof (struct lang_decl_flags);
+ gcc_unreachable ();
- ld = GGC_CNEWVAR (struct lang_decl, size);
+ ld = ggc_alloc_cleared_lang_decl (size);
- ld->decl_flags.can_be_full = CAN_HAVE_FULL_LANG_DECL_P (t) ? 1 : 0;
- ld->decl_flags.u1sel = TREE_CODE (t) == NAMESPACE_DECL ? 1 : 0;
- ld->decl_flags.u2sel = 0;
- if (ld->decl_flags.can_be_full)
- ld->u.f.u3sel = TREE_CODE (t) == FUNCTION_DECL ? 1 : 0;
+ ld->u.base.selector = sel;
DECL_LANG_SPECIFIC (t) = ld;
if (current_lang_name == lang_name_cplusplus
if (! DECL_LANG_SPECIFIC (node))
return;
- if (!CAN_HAVE_FULL_LANG_DECL_P (node))
- size = sizeof (struct lang_decl_flags);
+ if (TREE_CODE (node) == FUNCTION_DECL)
+ size = sizeof (struct lang_decl_fn);
+ else if (TREE_CODE (node) == NAMESPACE_DECL)
+ size = sizeof (struct lang_decl_ns);
+ else if (TREE_CODE (node) == PARM_DECL)
+ size = sizeof (struct lang_decl_parm);
+ else if (LANG_DECL_HAS_MIN (node))
+ size = sizeof (struct lang_decl_min);
else
- size = sizeof (struct lang_decl);
- ld = GGC_NEWVAR (struct lang_decl, size);
+ gcc_unreachable ();
+
+ ld = ggc_alloc_lang_decl (size);
memcpy (ld, DECL_LANG_SPECIFIC (node), size);
DECL_LANG_SPECIFIC (node) = ld;
size = sizeof (struct lang_type);
else
size = sizeof (struct lang_type_ptrmem);
- lt = GGC_NEWVAR (struct lang_type, size);
+ lt = ggc_alloc_lang_type (size);
memcpy (lt, TYPE_LANG_SPECIFIC (node), size);
TYPE_LANG_SPECIFIC (node) = lt;
tree t = make_node (code);
/* Create lang_type structure. */
- if (IS_AGGR_TYPE_CODE (code)
+ if (RECORD_OR_UNION_CODE_P (code)
|| code == BOUND_TEMPLATE_TEMPLATE_PARM)
{
- struct lang_type *pi = GGC_CNEW (struct lang_type);
+ struct lang_type *pi
+ = ggc_alloc_cleared_lang_type (sizeof (struct lang_type));
TYPE_LANG_SPECIFIC (t) = pi;
pi->u.c.h.is_lang_type_class = 1;
}
/* Set up some flags that give proper default behavior. */
- if (IS_AGGR_TYPE_CODE (code))
+ if (RECORD_OR_UNION_CODE_P (code))
{
- struct c_fileinfo *finfo = get_fileinfo (lbasename (input_filename));
+ struct c_fileinfo *finfo = get_fileinfo (input_filename);
SET_CLASSTYPE_INTERFACE_UNKNOWN_X (t, finfo->interface_unknown);
CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only;
}
}
tree
-make_aggr_type (enum tree_code code)
+make_class_type (enum tree_code code)
{
tree t = cxx_make_type (code);
+ SET_CLASS_TYPE_P (t, 1);
+ return t;
+}
- if (IS_AGGR_TYPE_CODE (code))
- SET_IS_AGGR_TYPE (t, 1);
+/* Returns true if we are currently in the main source file, or in a
+ template instantiation started from the main source file. */
- return t;
+bool
+in_main_input_context (void)
+{
+ struct tinst_level *tl = outermost_tinst_level();
+
+ if (tl)
+ return strcmp (main_input_filename,
+ LOCATION_FILE (tl->locus)) == 0;
+ else
+ return strcmp (main_input_filename, input_filename) == 0;
}
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