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67411a88a0
* src/scan-code.l (show_sub_message): Redo initializations to work around a bogus Sun C 5.12 warning. (parse_ref): Remove unreachable code that Sun C 5.12 complains about. * src/uniqstr.h (uniqstr_vsprintf): Use _GL_ATTRIBUTE_FORMAT_PRINTF (...) instead of __attribute__ ((__format__ (__printf__, ...))). Otherwise, Sun C 5.12 complains about an unknown attribute.
101 lines
3.9 KiB
C
101 lines
3.9 KiB
C
/* Keeping a unique copy of strings.
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Copyright (C) 2002-2003, 2008-2013 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef UNIQSTR_H_
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# define UNIQSTR_H_
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# include <stdio.h>
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/*-----------------------------------------.
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| Pointers to unique copies of C strings. |
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`-----------------------------------------*/
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typedef char const *uniqstr;
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/* Return the uniqstr for STR. */
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uniqstr uniqstr_new (char const *str);
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/* Return a uniqstr built by vsprintf. In order to simply concatenate
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strings, use UNIQSTR_CONCAT, which is a convenient wrapper around
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this function. */
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uniqstr uniqstr_vsprintf (char const *format, ...)
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_GL_ATTRIBUTE_FORMAT_PRINTF (1, 2);
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/* Two uniqstr values have the same value iff they are the same. */
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# define UNIQSTR_EQ(Ustr1, Ustr2) (!!((Ustr1) == (Ustr2)))
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/* Compare two uniqstr a la strcmp: negative for <, nul for =, and
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positive for >. Undefined order, relies on addresses. */
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int uniqstr_cmp (uniqstr u1, uniqstr u2);
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/* Die if STR is not a uniqstr. */
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void uniqstr_assert (char const *str);
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/*----------------.
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| Concatenation. |
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`----------------*/
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/* Concatenate at most 20 strings and return a uniqstr. The goal of
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this macro is to make the caller's code a little more succinct
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without a trivial uniqstr_vsprintf format string to maintain
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(for example, "%s%s%s") while still benefitting from gcc's type
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checking. Unfortunately, because of the missing format string in the
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macro invocation, the argument number reported by gcc for a bad
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argument type is 1 too large. */
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# define UNIQSTR_CONCAT(...) \
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uniqstr_vsprintf (UNIQSTR_GEN_FORMAT (__VA_ARGS__, \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s", \
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"%s", "%s", "%s", "%s", "%s"), \
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__VA_ARGS__)
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# define UNIQSTR_GEN_FORMAT(F1, F2, F3, F4, F5, \
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F6, F7, F8, F9, F10, \
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F11, F12, F13, F14, F15, \
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F16, F17, F18, F19, F20, \
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...) \
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UNIQSTR_GEN_FORMAT_ (__VA_ARGS__, \
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"", "", "", "", "", \
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"", "", "", "", "", \
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"", "", "", "", "", \
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"", "", "", "", "")
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# define UNIQSTR_GEN_FORMAT_(F1, F2, F3, F4, F5, \
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F6, F7, F8, F9, F10, \
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F11, F12, F13, F14, F15, \
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F16, F17, F18, F19, F20, ...) \
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F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 \
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F11 F12 F13 F14 F15 F16 F17 F18 F19 F20
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/*--------------------.
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| Table of uniqstrs. |
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`--------------------*/
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/* Create the string table. */
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void uniqstrs_new (void);
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/* Free all the memory allocated for symbols. */
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void uniqstrs_free (void);
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/* Report them all. */
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void uniqstrs_print (void);
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#endif /* ! defined UNIQSTR_H_ */
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