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/* Structures that hang off cpp_identifier, for PCH.
Copyright (C) 1986-2017 Free Software Foundation, Inc.
This program 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 3, or (at your option) any
later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "cpplib.h"
#if !defined (HAVE_UCHAR) && !defined (IN_GCC)
typedef unsigned char uchar;
#endif
#define UC (const unsigned char *) /* Intended use: UC"string" */
/* Chained list of answers to an assertion. */
struct GTY(()) answer {
struct answer *next;
unsigned int count;
cpp_token GTY ((length ("%h.count"))) first[1];
};
/* Each macro definition is recorded in a cpp_macro structure.
Variadic macros cannot occur with traditional cpp. */
struct GTY(()) cpp_macro {
/* Parameters, if any. If parameter names use extended identifiers,
the original spelling of those identifiers, not the canonical
UTF-8 spelling, goes here. */
cpp_hashnode ** GTY ((nested_ptr (union tree_node,
"%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL",
"%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"),
length ("%h.paramc")))
params;
/* Replacement tokens (ISO) or replacement text (traditional). See
comment at top of cpptrad.c for how traditional function-like
macros are encoded. */
union cpp_macro_u
{
cpp_token * GTY ((tag ("0"), length ("%0.count"))) tokens;
const unsigned char * GTY ((tag ("1"))) text;
} GTY ((desc ("%1.traditional"))) exp;
/* Definition line number. */
source_location line;
/* Number of tokens in expansion, or bytes for traditional macros. */
unsigned int count;
/* Number of parameters. */
unsigned short paramc;
/* If a function-like macro. */
unsigned int fun_like : 1;
/* If a variadic macro. */
unsigned int variadic : 1;
/* If macro defined in system header. */
unsigned int syshdr : 1;
/* Nonzero if it has been expanded or had its existence tested. */
unsigned int used : 1;
/* Indicate which field of 'exp' is in use. */
unsigned int traditional : 1;
/* Indicate whether the tokens include extra CPP_PASTE tokens at the
end to track invalid redefinitions with consecutive CPP_PASTE
tokens. */
unsigned int extra_tokens : 1;
};
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