/* Mainly the interface between cpplib and the C front ends.
Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997
- 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
+ Free Software Foundation, Inc.
This file is part of GCC.
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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
static int header_time, body_time;
static splay_tree file_info_tree;
-#undef WCHAR_TYPE_SIZE
-#define WCHAR_TYPE_SIZE TYPE_PRECISION (wchar_type_node)
-
-/* Number of bytes in a wide character. */
-#define WCHAR_BYTES (WCHAR_TYPE_SIZE / BITS_PER_UNIT)
-
int pending_lang_change; /* If we need to switch languages - C++ only */
int c_header_level; /* depth in C headers - C++ only */
to the untranslated one. */
int c_lex_string_translate = 1;
+/* True if strings should be passed to the caller of c_lex completely
+ unmolested (no concatenation, no translation). */
+bool c_lex_return_raw_strings = false;
+
static tree interpret_integer (const cpp_token *, unsigned int);
static tree interpret_float (const cpp_token *, unsigned int);
-static enum integer_type_kind
- narrowest_unsigned_type (tree, unsigned int);
-static enum integer_type_kind
- narrowest_signed_type (tree, unsigned int);
+static enum integer_type_kind narrowest_unsigned_type
+ (unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
+static enum integer_type_kind narrowest_signed_type
+ (unsigned HOST_WIDE_INT, unsigned HOST_WIDE_INT, unsigned int);
static enum cpp_ttype lex_string (const cpp_token *, tree *, bool);
static tree lex_charconst (const cpp_token *);
static void update_header_times (const char *);
struct cpp_callbacks *cb;
struct c_fileinfo *toplevel;
- /* Set up filename timing. Must happen before cpp_read_main_file. */
- file_info_tree = splay_tree_new ((splay_tree_compare_fn)strcmp,
- 0,
- (splay_tree_delete_value_fn)free);
+ /* The get_fileinfo data structure must be initialized before
+ cpp_read_main_file is called. */
toplevel = get_fileinfo ("<top level>");
if (flag_detailed_statistics)
{
/* Set the debug callbacks if we can use them. */
if (debug_info_level == DINFO_LEVEL_VERBOSE
- && (write_symbols == DWARF_DEBUG || write_symbols == DWARF2_DEBUG
+ && (write_symbols == DWARF2_DEBUG
|| write_symbols == VMS_AND_DWARF2_DEBUG))
{
cb->define = cb_define;
splay_tree_node n;
struct c_fileinfo *fi;
+ if (!file_info_tree)
+ file_info_tree = splay_tree_new ((splay_tree_compare_fn) strcmp,
+ 0,
+ (splay_tree_delete_value_fn) free);
+
n = splay_tree_lookup (file_info_tree, (splay_tree_key) name);
if (n)
return (struct c_fileinfo *) n->value;
- fi = xmalloc (sizeof (struct c_fileinfo));
+ fi = XNEW (struct c_fileinfo);
fi->time = 0;
fi->interface_only = 0;
fi->interface_unknown = 1;
print_time ("header files (total)", header_time);
print_time ("main file (total)", this_time - body_time);
fprintf (stderr, "ratio = %g : 1\n",
- (double)header_time / (double)(this_time - body_time));
+ (double) header_time / (double) (this_time - body_time));
fprintf (stderr, "\n******\n");
splay_tree_foreach (file_info_tree, dump_one_header, 0);
const cpp_string * ARG_UNUSED (str))
{
#ifdef ASM_OUTPUT_IDENT
- if (! flag_no_ident)
+ if (!flag_no_ident)
{
/* Convert escapes in the string. */
cpp_string cstr = { 0, 0 };
if (cpp_interpret_string (pfile, str, 1, &cstr, false))
{
ASM_OUTPUT_IDENT (asm_out_file, (const char *) cstr.text);
- free ((void *)cstr.text);
+ free ((void *) cstr.text);
}
}
#endif
{
/* Don't stack the main buffer on the input stack;
we already did in compile_file. */
- if (! MAIN_FILE_P (new_map))
+ if (!MAIN_FILE_P (new_map))
{
#ifdef USE_MAPPED_LOCATION
int included_at = LAST_SOURCE_LINE_LOCATION (new_map - 1);
if (c_header_level && --c_header_level == 0)
{
if (new_map->sysp == 2)
- warning ("badly nested C headers from preprocessor");
+ warning (0, "badly nested C headers from preprocessor");
--pending_lang_change;
}
#endif
input_filename = new_map->to_file;
input_line = new_map->to_line;
#endif
-
- /* Hook for C++. */
- extract_interface_info ();
}
static void
-Wunknown-pragmas has been given. */
if (warn_unknown_pragmas > in_system_header)
{
+ const unsigned char *space, *name;
+ const cpp_token *s;
#ifndef USE_MAPPED_LOCATION
+ location_t fe_loc;
const struct line_map *map = linemap_lookup (&line_table, loc);
+ fe_loc.file = map->to_file;
+ fe_loc.line = SOURCE_LINE (map, loc);
+#else
+ location_t fe_loc = loc;
#endif
- const unsigned char *space, *name;
- const cpp_token *s;
space = name = (const unsigned char *) "";
s = cpp_get_token (pfile);
name = cpp_token_as_text (pfile, s);
}
-#ifdef USE_MAPPED_LOCATION
- input_location = loc;
-#else
- input_line = SOURCE_LINE (map, loc);
-#endif
- warning ("ignoring #pragma %s %s", space, name);
+ warning (OPT_Wunknown_pragmas, "%Hignoring #pragma %s %s",
+ &fe_loc, space, name);
}
}
(const char *) NODE_NAME (node));
}
\f
-static inline const cpp_token *
-get_nonpadding_token (void)
-{
- const cpp_token *tok;
- timevar_push (TV_CPP);
- do
- tok = cpp_get_token (parse_in);
- while (tok->type == CPP_PADDING);
- timevar_pop (TV_CPP);
-
- return tok;
-}
+/* Read a token and return its type. Fill *VALUE with its value, if
+ applicable. Fill *CPP_FLAGS with the token's flags, if it is
+ non-NULL. */
-int
-c_lex_with_flags (tree *value, unsigned char *cpp_flags)
+enum cpp_ttype
+c_lex_with_flags (tree *value, location_t *loc, unsigned char *cpp_flags)
{
- const cpp_token *tok;
- location_t atloc;
static bool no_more_pch;
+ const cpp_token *tok;
+ enum cpp_ttype type;
+ timevar_push (TV_CPP);
retry:
- tok = get_nonpadding_token ();
-
+ tok = cpp_get_token (parse_in);
+ type = tok->type;
+
retry_after_at:
- switch (tok->type)
+#ifdef USE_MAPPED_LOCATION
+ *loc = tok->src_loc;
+#else
+ *loc = input_location;
+#endif
+ switch (type)
{
+ case CPP_PADDING:
+ goto retry;
+
case CPP_NAME:
*value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
break;
break;
default:
- abort ();
+ gcc_unreachable ();
}
}
break;
case CPP_ATSIGN:
/* An @ may give the next token special significance in Objective-C. */
- atloc = input_location;
- tok = get_nonpadding_token ();
if (c_dialect_objc ())
{
- tree val;
- switch (tok->type)
+ location_t atloc = input_location;
+
+ retry_at:
+ tok = cpp_get_token (parse_in);
+ type = tok->type;
+ switch (type)
{
+ case CPP_PADDING:
+ goto retry_at;
+
+ case CPP_STRING:
+ case CPP_WSTRING:
+ type = lex_string (tok, value, true);
+ break;
+
case CPP_NAME:
- val = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
- if (C_IS_RESERVED_WORD (val)
- && OBJC_IS_AT_KEYWORD (C_RID_CODE (val)))
+ *value = HT_IDENT_TO_GCC_IDENT (HT_NODE (tok->val.node));
+ if (objc_is_reserved_word (*value))
{
- *value = val;
- return CPP_AT_NAME;
+ type = CPP_AT_NAME;
+ break;
}
- break;
+ /* FALLTHROUGH */
- case CPP_STRING:
- case CPP_WSTRING:
- return lex_string (tok, value, true);
-
- default: break;
+ default:
+ /* ... or not. */
+ error ("%Hstray %<@%> in program", &atloc);
+ goto retry_after_at;
}
+ break;
}
- /* ... or not. */
- error ("%Hstray '@' in program", &atloc);
- goto retry_after_at;
+ /* FALLTHROUGH */
+ case CPP_HASH:
+ case CPP_PASTE:
+ {
+ unsigned char name[4];
+
+ *cpp_spell_token (parse_in, tok, name, true) = 0;
+
+ error ("stray %qs in program", name);
+ }
+
+ goto retry;
case CPP_OTHER:
{
if (c == '"' || c == '\'')
error ("missing terminating %c character", (int) c);
else if (ISGRAPH (c))
- error ("stray '%c' in program", (int) c);
+ error ("stray %qc in program", (int) c);
else
- error ("stray '\\%o' in program", (int) c);
+ error ("stray %<\\%o%> in program", (int) c);
}
goto retry;
case CPP_STRING:
case CPP_WSTRING:
- return lex_string (tok, value, false);
+ if (!c_lex_return_raw_strings)
+ {
+ type = lex_string (tok, value, false);
+ break;
+ }
+
+ /* FALLTHROUGH */
+
+ case CPP_PRAGMA:
+ *value = build_string (tok->val.str.len, (char *) tok->val.str.text);
break;
/* These tokens should not be visible outside cpplib. */
case CPP_HEADER_NAME:
case CPP_COMMENT:
case CPP_MACRO_ARG:
- abort ();
+ gcc_unreachable ();
default:
*value = NULL_TREE;
break;
}
- if (! no_more_pch)
+ if (cpp_flags)
+ *cpp_flags = tok->flags;
+
+ if (!no_more_pch)
{
no_more_pch = true;
c_common_no_more_pch ();
}
-
- if (cpp_flags)
- *cpp_flags = tok->flags;
- return tok->type;
+
+ timevar_pop (TV_CPP);
+
+ return type;
}
-int
+enum cpp_ttype
c_lex (tree *value)
{
- return c_lex_with_flags (value, NULL);
+ location_t loc;
+ return c_lex_with_flags (value, &loc, NULL);
}
/* Returns the narrowest C-visible unsigned type, starting with the
- minimum specified by FLAGS, that can fit VALUE, or itk_none if
+ minimum specified by FLAGS, that can fit HIGH:LOW, or itk_none if
there isn't one. */
+
static enum integer_type_kind
-narrowest_unsigned_type (tree value, unsigned int flags)
+narrowest_unsigned_type (unsigned HOST_WIDE_INT low,
+ unsigned HOST_WIDE_INT high,
+ unsigned int flags)
{
enum integer_type_kind itk;
else
itk = itk_unsigned_long_long;
- /* int_fits_type_p must think the type of its first argument is
- wider than its second argument, or it won't do the proper check. */
- TREE_TYPE (value) = widest_unsigned_literal_type_node;
-
for (; itk < itk_none; itk += 2 /* skip unsigned types */)
- if (int_fits_type_p (value, integer_types[itk]))
- return itk;
+ {
+ tree upper = TYPE_MAX_VALUE (integer_types[itk]);
+
+ if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
+ || ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
+ && TREE_INT_CST_LOW (upper) >= low))
+ return itk;
+ }
return itk_none;
}
/* Ditto, but narrowest signed type. */
static enum integer_type_kind
-narrowest_signed_type (tree value, unsigned int flags)
+narrowest_signed_type (unsigned HOST_WIDE_INT low,
+ unsigned HOST_WIDE_INT high, unsigned int flags)
{
enum integer_type_kind itk;
else
itk = itk_long_long;
- /* int_fits_type_p must think the type of its first argument is
- wider than its second argument, or it won't do the proper check. */
- TREE_TYPE (value) = widest_unsigned_literal_type_node;
for (; itk < itk_none; itk += 2 /* skip signed types */)
- if (int_fits_type_p (value, integer_types[itk]))
- return itk;
+ {
+ tree upper = TYPE_MAX_VALUE (integer_types[itk]);
+
+ if ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) > high
+ || ((unsigned HOST_WIDE_INT) TREE_INT_CST_HIGH (upper) == high
+ && TREE_INT_CST_LOW (upper) >= low))
+ return itk;
+ }
return itk_none;
}
integer = cpp_interpret_integer (parse_in, token, flags);
integer = cpp_num_sign_extend (integer, options->precision);
- value = build_int_2 (integer.low, integer.high);
/* The type of a constant with a U suffix is straightforward. */
if (flags & CPP_N_UNSIGNED)
- itk = narrowest_unsigned_type (value, flags);
+ itk = narrowest_unsigned_type (integer.low, integer.high, flags);
else
{
/* The type of a potentially-signed integer constant varies
depending on the base it's in, the standard in use, and the
length suffixes. */
- enum integer_type_kind itk_u = narrowest_unsigned_type (value, flags);
- enum integer_type_kind itk_s = narrowest_signed_type (value, flags);
+ enum integer_type_kind itk_u
+ = narrowest_unsigned_type (integer.low, integer.high, flags);
+ enum integer_type_kind itk_s
+ = narrowest_signed_type (integer.low, integer.high, flags);
/* In both C89 and C99, octal and hex constants may be signed or
unsigned, whichever fits tighter. We do not warn about this
if (itk_u < itk_unsigned_long)
itk_u = itk_unsigned_long;
itk = itk_u;
- warning ("this decimal constant is unsigned only in ISO C90");
+ warning (0, "this decimal constant is unsigned only in ISO C90");
}
- else if (warn_traditional)
- warning ("this decimal constant would be unsigned in ISO C90");
+ else
+ warning (OPT_Wtraditional,
+ "this decimal constant would be unsigned in ISO C90");
}
}
}
if (itk > itk_unsigned_long
&& (flags & CPP_N_WIDTH) != CPP_N_LARGE
- && ! in_system_header && ! flag_isoc99)
- pedwarn ("integer constant is too large for \"%s\" type",
+ && !in_system_header && !flag_isoc99)
+ pedwarn ("integer constant is too large for %qs type",
(flags & CPP_N_UNSIGNED) ? "unsigned long" : "long");
- TREE_TYPE (value) = type;
+ value = build_int_cst_wide (type, integer.low, integer.high);
/* Convert imaginary to a complex type. */
if (flags & CPP_N_IMAGINARY)
- value = build_complex (NULL_TREE, convert (type, integer_zero_node), value);
+ value = build_complex (NULL_TREE, build_int_cst (type, 0), value);
return value;
}
/* I or J suffix. */
copylen--;
- copy = alloca (copylen + 1);
+ copy = (char *) alloca (copylen + 1);
memcpy (copy, token->val.str.text, copylen);
copy[copylen] = '\0';
real_from_string (&real, copy);
real_convert (&real, TYPE_MODE (type), &real);
- /* A diagnostic is required for "soft" overflow by some ISO C
- testsuites. This is not pedwarn, because some people don't want
- an error for this.
- ??? That's a dubious reason... is this a mandatory diagnostic or
- isn't it? -- zw, 2001-08-21. */
+ /* Both C and C++ require a diagnostic for a floating constant
+ outside the range of representable values of its type. Since we
+ have __builtin_inf* to produce an infinity, it might now be
+ appropriate for this to be a mandatory pedwarn rather than
+ conditioned on -pedantic. */
if (REAL_VALUE_ISINF (real) && pedantic)
- warning ("floating constant exceeds range of \"%s\"", type_name);
+ pedwarn ("floating constant exceeds range of %<%s%>", type_name);
/* Create a node with determined type and value. */
value = build_real (type, real);
{
tree value;
bool wide = false;
- size_t count = 1;
+ size_t concats = 0;
struct obstack str_ob;
cpp_string istr;
if (tok->type == CPP_WSTRING)
wide = true;
- tok = get_nonpadding_token ();
- if (c_dialect_objc () && tok->type == CPP_ATSIGN)
- {
- objc_string = true;
- tok = get_nonpadding_token ();
- }
- if (tok->type == CPP_STRING || tok->type == CPP_WSTRING)
+ retry:
+ tok = cpp_get_token (parse_in);
+ switch (tok->type)
{
- gcc_obstack_init (&str_ob);
- obstack_grow (&str_ob, &str, sizeof (cpp_string));
-
- do
+ case CPP_PADDING:
+ goto retry;
+ case CPP_ATSIGN:
+ if (c_dialect_objc ())
{
- count++;
- if (tok->type == CPP_WSTRING)
- wide = true;
- obstack_grow (&str_ob, &tok->val.str, sizeof (cpp_string));
-
- tok = get_nonpadding_token ();
- if (c_dialect_objc () && tok->type == CPP_ATSIGN)
- {
- objc_string = true;
- tok = get_nonpadding_token ();
- }
+ objc_string = true;
+ goto retry;
}
- while (tok->type == CPP_STRING || tok->type == CPP_WSTRING);
- strs = obstack_finish (&str_ob);
+ /* FALLTHROUGH */
+
+ default:
+ break;
+
+ case CPP_WSTRING:
+ wide = true;
+ /* FALLTHROUGH */
+
+ case CPP_STRING:
+ if (!concats)
+ {
+ gcc_obstack_init (&str_ob);
+ obstack_grow (&str_ob, &str, sizeof (cpp_string));
+ }
+
+ concats++;
+ obstack_grow (&str_ob, &tok->val.str, sizeof (cpp_string));
+ goto retry;
}
/* We have read one more token than we want. */
_cpp_backup_tokens (parse_in, 1);
+ if (concats)
+ strs = XOBFINISH (&str_ob, cpp_string *);
- if (count > 1 && !objc_string && warn_traditional && !in_system_header)
- warning ("traditional C rejects string constant concatenation");
+ if (concats && !objc_string && !in_system_header)
+ warning (OPT_Wtraditional,
+ "traditional C rejects string constant concatenation");
if ((c_lex_string_translate
? cpp_interpret_string : cpp_interpret_string_notranslate)
- (parse_in, strs, count, &istr, wide))
+ (parse_in, strs, concats + 1, &istr, wide))
{
- value = build_string (istr.len, (char *)istr.text);
- free ((void *)istr.text);
+ value = build_string (istr.len, (char *) istr.text);
+ free ((void *) istr.text);
if (c_lex_string_translate == -1)
{
- if (!cpp_interpret_string_notranslate (parse_in, strs, count,
- &istr, wide))
- /* Assume that, if we managed to translate the string
- above, then the untranslated parsing will always
- succeed. */
- abort ();
+ int xlated = cpp_interpret_string_notranslate (parse_in, strs,
+ concats + 1,
+ &istr, wide);
+ /* Assume that, if we managed to translate the string above,
+ then the untranslated parsing will always succeed. */
+ gcc_assert (xlated);
- if (TREE_STRING_LENGTH (value) != (int)istr.len
- || 0 != strncmp (TREE_STRING_POINTER (value), (char *)istr.text,
+ if (TREE_STRING_LENGTH (value) != (int) istr.len
+ || 0 != strncmp (TREE_STRING_POINTER (value), (char *) istr.text,
istr.len))
{
/* Arrange for us to return the untranslated string in
*valp, but to set up the C type of the translated
one. */
- *valp = build_string (istr.len, (char *)istr.text);
+ *valp = build_string (istr.len, (char *) istr.text);
valp = &TREE_CHAIN (*valp);
}
- free ((void *)istr.text);
+ free ((void *) istr.text);
}
}
else
TREE_TYPE (value) = wide ? wchar_array_type_node : char_array_type_node;
*valp = fix_string_type (value);
- if (strs != &str)
+ if (concats)
obstack_free (&str_ob, 0);
return objc_string ? CPP_OBJC_STRING : wide ? CPP_WSTRING : CPP_STRING;
result = cpp_interpret_charconst (parse_in, token,
&chars_seen, &unsignedp);
- /* Cast to cppchar_signed_t to get correct sign-extension of RESULT
- before possibly widening to HOST_WIDE_INT for build_int_2. */
- if (unsignedp || (cppchar_signed_t) result >= 0)
- value = build_int_2 (result, 0);
- else
- value = build_int_2 ((cppchar_signed_t) result, -1);
-
if (token->type == CPP_WCHAR)
type = wchar_type_node;
/* In C, a character constant has type 'int'.
else
type = char_type_node;
- TREE_TYPE (value) = type;
+ /* Cast to cppchar_signed_t to get correct sign-extension of RESULT
+ before possibly widening to HOST_WIDE_INT for build_int_cst. */
+ if (unsignedp || (cppchar_signed_t) result >= 0)
+ value = build_int_cst_wide (type, result, 0);
+ else
+ value = build_int_cst_wide (type, (cppchar_signed_t) result, -1);
+
return value;
}
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