mirror of git://gcc.gnu.org/git/gcc.git
83 lines
2.7 KiB
C
83 lines
2.7 KiB
C
/* Structures that hang off cpp_identifier, for PCH.
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Copyright (C) 1986-2015 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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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; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "cpplib.h"
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#if !defined (HAVE_UCHAR) && !defined (IN_GCC)
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typedef unsigned char uchar;
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#endif
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#define UC (const unsigned char *) /* Intended use: UC"string" */
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/* Chained list of answers to an assertion. */
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struct GTY(()) answer {
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struct answer *next;
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unsigned int count;
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cpp_token GTY ((length ("%h.count"))) first[1];
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};
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/* Each macro definition is recorded in a cpp_macro structure.
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Variadic macros cannot occur with traditional cpp. */
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struct GTY(()) cpp_macro {
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/* Parameters, if any. If parameter names use extended identifiers,
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the original spelling of those identifiers, not the canonical
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UTF-8 spelling, goes here. */
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cpp_hashnode ** GTY ((nested_ptr (union tree_node,
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"%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL",
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"%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"),
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length ("%h.paramc")))
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params;
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/* Replacement tokens (ISO) or replacement text (traditional). See
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comment at top of cpptrad.c for how traditional function-like
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macros are encoded. */
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union cpp_macro_u
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{
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cpp_token * GTY ((tag ("0"), length ("%0.count"))) tokens;
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const unsigned char * GTY ((tag ("1"))) text;
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} GTY ((desc ("%1.traditional"))) exp;
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/* Definition line number. */
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source_location line;
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/* Number of tokens in expansion, or bytes for traditional macros. */
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unsigned int count;
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/* Number of parameters. */
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unsigned short paramc;
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/* If a function-like macro. */
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unsigned int fun_like : 1;
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/* If a variadic macro. */
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unsigned int variadic : 1;
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/* If macro defined in system header. */
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unsigned int syshdr : 1;
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/* Nonzero if it has been expanded or had its existence tested. */
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unsigned int used : 1;
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/* Indicate which field of 'exp' is in use. */
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unsigned int traditional : 1;
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/* Indicate whether the tokens include extra CPP_PASTE tokens at the
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end to track invalid redefinitions with consecutive CPP_PASTE
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tokens. */
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unsigned int extra_tokens : 1;
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};
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