565 lines
25 KiB
C
565 lines
25 KiB
C
/*-
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* Copyright (c) 1998, 2002-2008 Kiyoshi Matsui <kmatsui@t3.rim.or.jp>
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* All rights reserved.
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*
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* Some parts of this code are derived from the public domain software
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* DECUS cpp (1984,1985) written by Martin Minow.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* I N T E R N A L . H
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* I n t e r n a l D e f i n i t i o n s f o r M C P P
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*
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* In general, definitions in this file should not be changed by implementor.
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*/
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#ifndef SYSTEM_H
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#error "system.H" must be included prior to "internal.H"
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#endif
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#include "mcpp_out.h"
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#if MCPP_LIB
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#include "mcpp_lib.h" /* External interface when used as library */
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#endif
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#define EOS '\0' /* End of string */
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#define CHAR_EOF 0 /* Returned by get_ch() on eof */
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#define VA_ARGS (UCHARMAX + 1) /* Signal of variable arguments */
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#define GVA_ARGS (VA_ARGS * 2) /* GCC-specific variable args */
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#define AVA_ARGS (VA_ARGS | GVA_ARGS)/* Any variable arguments */
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#define DEF_PRAGMA (-1 - AVA_ARGS) /* _Pragma() pseudo-macro */
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#define DEF_NOARGS (-2 - AVA_ARGS) /* #define foo vs #define foo() */
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#define DEF_NOARGS_PREDEF_OLD (DEF_NOARGS - 1)
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/* Compiler-predefined macro without leading '_' */
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#define DEF_NOARGS_PREDEF (DEF_NOARGS - 2)/* Compiler-predefined macro */
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#define DEF_NOARGS_STANDARD (DEF_NOARGS - 3)/* Standard predefined macro */
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#define DEF_NOARGS_DYNAMIC (DEF_NOARGS - 4)/* Standard dynamically defined */
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/*
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* These magic characters must be control characters which can't be used
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* in source file.
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*/
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/* for '#pragma MCPP debug macro_call' and -K option in STD mode. */
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#define MAC_INF 0x18 /* Magic for macro informations */
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/* In STD and POST_STD modes (IN_SRC and TOK_SEP are for STD mode only). */
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#define DEF_MAGIC 0x19 /* Magic to prevent recursive expansion */
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#define IN_SRC 0x1A /* Magic of name from source */
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#define RT_END 0x1C /* Magic of macro rescan boundary */
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#define ST_QUOTE 0x1D /* Magic for stringizing */
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#define CAT 0x1E /* Token concatenation delim. */
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#define TOK_SEP 0x1F /* Magic to wrap expanded macro */
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/* In OLD_PREP mode. */
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#define COM_SEP 0x1F /* Comment of 0-length */
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#define MAC_PARM 0x7F /* Macro parameter signal */
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/* Special character types */
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#define LET 1 /* Letter (alphabet and _) */
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#define DIG 2 /* Digit */
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#define DOT 4 /* . might start a number */
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#define PUNC 8 /* Punctuators and operators */
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#define QUO 0x10 /* Both flavors of quotation ",'*/
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#define SPA 0x20 /* White spaces */
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#define HSP 0x40
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/* Horizontal white spaces (' ', '\t', TOK_SEP) */
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/*
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* Codes for operators used in #if expression.
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* The value of the scanned operator is stored in 'openum'.
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*/
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#define INV 0 /* Invalid, must be zero */
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#define OP_EOE INV /* End of expression */
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#define VAL 1 /* Value (operand) */
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#define OP_LPA 2 /* ( */
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/* The following are unary. */
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#define FIRST_UNOP OP_PLU /* First unary operator */
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#define OP_PLU 3 /* + */
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#define OP_NEG 4 /* - */
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#define OP_COM 5 /* ~ */
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#define OP_NOT 6 /* ! */
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#define LAST_UNOP OP_NOT /* Last unary operator */
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/* The following are binary. */
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#define FIRST_BINOP OP_MUL /* First binary operator */
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#define OP_MUL 7 /* * */
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#define OP_DIV 8 /* / */
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#define OP_MOD 9 /* % */
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#define OP_ADD 10 /* + */
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#define OP_SUB 11 /* - */
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#define OP_SL 12 /* << */
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#define OP_SR 13 /* >> */
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#define OP_LT 14 /* < */
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#define OP_LE 15 /* <= */
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#define OP_GT 16 /* > */
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#define OP_GE 17 /* >= */
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#define OP_EQ 18 /* == */
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#define OP_NE 19 /* != */
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#define OP_AND 20 /* & */
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#define OP_XOR 21 /* ^ */
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#define OP_OR 22 /* | */
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#define OP_ANA 23 /* && */
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#define OP_ORO 24 /* || */
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#define OP_QUE 25 /* ? */
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#define OP_COL 26 /* : */
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#define LAST_BINOP OP_COL /* Last binary operator */
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/* Parenthesis */
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#define OP_RPA 27 /* ) */
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#define OP_END 28 /* End of expression marker */
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#define OP_FAIL (OP_END + 1) /* For error returns */
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/*
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* The following are operators used in macro definition only.
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*/
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/* In STD and POST_STD modes. */
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#define OP_STR 30 /* # */
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#define OP_CAT 31 /* ## */
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#define OP_ELL 32 /* ... */
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/*
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* The following are C source operators or punctuators,
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* not preprocessing operators.
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* Note: "sizeof", "defined" are read as identifier for convenience.
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*/
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#define OP_1 33 /* Any other single byte ops or puncs */
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/* =, ., ;, [, ], {, }, ',' */
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#define OP_2 34 /* Any other two bytes operators */
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/* &=, |=, ++, +=, --, -=, ->, %=, *=, /=, ^=, */
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#define OP_3 35 /* Three bytes operators : <<=, >>= */
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/*
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* The following are operators spelled in digraphs.
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*/
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/* In STD and POST_STD modes. */
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#define OP_LBRACE_D 0x40 /* <% i.e. { */
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#define OP_RBRACE_D 0x41 /* %> i.e. } */
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#define OP_LBRCK_D 0x42 /* <: i.e. [ */
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#define OP_RBRCK_D 0x43 /* :> i.e. ] */
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#define OP_SHARP_D 0x44 /* %: i.e. # */
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#define OP_DSHARP_D 0x45 /* %:%: i.e. ## */
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#define OP_DIGRAPH 0x40 /* (OP_*_D & OP_DIGRAPH) == 0x40 */
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/*
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* The following are for lexical scanning only.
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*/
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/* Token types */
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#define NO_TOKEN 0
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#define NAM 65 /* Identifier (name, keyword) */
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#define NUM 66 /* Preprocessing number */
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#define STR 67 /* Character string literal */
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#define CHR 69 /* Integer character constant */
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/* In STD and POST_STD modes. */
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#define WSTR 68 /* Wide string literal */
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#define WCHR 70 /* Wide character constant */
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#define OPE 71 /* Operator or punctuator */
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#define SPE 72 /* Unknown token (@ or others) */
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#define SEP 73 /* Token separator or magics */
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/*
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* The following are values of 'mcpp_debug' variable which is set by the
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* arguments of '#pragma MCPP debug' directive.
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*/
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#define PATH 1
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#define TOKEN 2
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#define EXPAND 4
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#define MACRO_CALL 8
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#define IF 16
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#define EXPRESSION 32
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#define GETC 64
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#define MEMORY 128
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/* MAC_* represent macro information types for -K option. */
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#define MAC_CALL_START 1
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#define MAC_CALL_END 2
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#define MAC_ARG_START 3
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#define MAC_ARG_END 4
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/* MB_ERROR signals wrong multi-byte character sequence. */
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#define MB_ERROR 0x8000
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#if MCPP_LIB && HOST_COMPILER == GNUC \
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&& (SYS_FAMILY == SYS_UNIX && SYSTEM != SYS_CYGWIN)
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/* For GCC 4.* on UNIXes */
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#pragma GCC visibility push( hidden) /* Hide these names from outside */
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#endif
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/*
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* The DEFBUF structure stores information about #defined macros.
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* Note that DEFBUF->parmnames is parameter names catenated with commas,
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* which is saved for the check of redefinition for STD mode.
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* 'parmnames' and 'repl' are allocated to the area succeding to name.
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*/
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typedef struct defbuf {
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struct defbuf * link; /* Pointer to next def in chain */
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short nargs; /* Number of parameters */
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char * parmnames; /* -> Parameter names catenated by ',' */
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char * repl; /* Pointer to replacement text */
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const char * fname; /* Macro is defined in the source file */
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long mline; /* at the line. */
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char push; /* Push level indicator */
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char name[1]; /* Macro name */
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} DEFBUF;
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/*
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* The FILEINFO structure stores information about open files and macros
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* being expanded.
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*/
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typedef struct fileinfo {
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char * bptr; /* Current pointer into buffer */
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long line; /* Current line number of file */
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FILE * fp; /* Source file if non-null */
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long pos; /* Position next to #include */
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struct fileinfo * parent; /* Link to includer */
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struct ifinfo * initif; /* Initial ifstack (return there on EOF)*/
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int sys_header; /* System header file or not */
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int include_opt; /* Specified by -include option */
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const char ** dirp; /* Include directory the file resides */
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const char * src_dir; /* Directory of source file */
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const char * real_fname; /* Real file name */
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const char * full_fname; /* Real full path list */
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char * filename; /* File/macro name (maybe changed) */
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char * buffer; /* Buffer of current input line */
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#if MCPP_LIB
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/* Save output functions during push/pop of #includes */
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int (* last_fputc) ( int c, OUTDEST od);
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int (* last_fputs) ( const char * s, OUTDEST od);
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int (* last_fprintf)( OUTDEST od, const char * format, ...);
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#endif
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} FILEINFO;
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/*
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* IFINFO stores information of conditional compilation.
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*/
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typedef struct ifinfo {
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int stat; /* State of compilation */
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long ifline; /* Line #if started */
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long elseline; /* Line #else started */
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} IFINFO;
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/*
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* These bits are set in IFINFO.stat
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*/
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#define WAS_COMPILING 1 /* TRUE if compile set at entry */
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#define ELSE_SEEN 2 /* TRUE when #else processed */
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#define TRUE_SEEN 4 /* TRUE when #if TRUE processed */
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#define compiling ifstack[0].stat
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#define FP2DEST(fp) \
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(fp == fp_out) ? OUT : \
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((fp == fp_err) ? ERR : \
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((fp == fp_debug) ? DBG : \
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((OUTDEST) -1)))
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/* VAL_SIGN structure stores information about evaluated number. */
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typedef struct val_sign {
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expr_t val; /* Value */
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int sign; /* Signed, unsigned, error */
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} VAL_SIGN;
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/* Values of VAL_SIGN.sign. */
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#define SIGNED 1
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#define UNSIGNED 0
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#define VAL_ERROR (-1)
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/* LINE_COL stores information of line and column data */
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typedef struct line_col {
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long line;
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size_t col;
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} LINE_COL;
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/* Value of macro_line on macro call error. */
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#define MACRO_ERROR (-1L)
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/*
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* Values of insert_sep (flag of insertion of token separator).
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* Used only in POST_STD mode.
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*/
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#define NO_SEP 0 /* No separator is inserted */
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#define INSERT_SEP 1 /* Next get_ch() insert a separator */
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#define INSERTED_SEP 2 /* Last get_ch() Inserted a separator */
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#define str_eq(s1, s2) (strcmp(s1, s2) == 0)
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#ifndef IO_SUCCESS
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#define IO_SUCCESS 0
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#endif
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#ifndef IO_ERROR
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#define IO_ERROR (errno ? errno : 1)
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#endif
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/*
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* Externs
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*/
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/* The minimum translation limits specified by the Standards. */
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extern struct std_limits_ {
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long str_len; /* Least maximum of string len. */
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size_t id_len; /* Least maximum of ident len. */
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int n_mac_pars; /* Least maximum of num of pars.*/
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int exp_nest; /* Least maximum of expr nest */
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int blk_nest; /* Least maximum of block nest */
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int inc_nest; /* Least maximum of include nest*/
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long n_macro; /* Least maximum of num of macro*/
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long line_num; /* Maximum source line number */
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} std_limits;
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/* The boolean flags specified by the execution options. */
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extern struct option_flags_ {
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int c; /* -C option (keep comments) */
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int k; /* -k option (keep white spaces)*/
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int z; /* -z option (no-output of included file) */
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int p; /* -P option (no #line output) */
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int q; /* -Q option (diag to mcpp.err) */
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int v; /* -v option (verbose) */
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int trig; /* -3 option (toggle trigraphs) */
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int dig; /* -2 option (toggle digraphs) */
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int lang_asm; /* -a option (assembler source) */
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int no_source_line; /* Do not output line in diag. */
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int dollar_in_name; /* Allow $ in identifiers */
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} option_flags;
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extern int mcpp_mode; /* Mode of preprocessing */
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extern int stdc_val; /* Value of __STDC__ */
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extern long stdc_ver; /* Value of __STDC_VERSION__ */
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extern long cplus_val; /* Value of __cplusplus for C++ */
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extern int stdc2; /* cplus_val or (stdc_ver >= 199901L) */
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extern int stdc3; /* (stdc_ver or cplus_val) >= 199901L */
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extern int standard; /* mcpp_mode is STD or POST_STD */
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extern int std_line_prefix; /* #line in C source style */
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extern int warn_level; /* Level of warning */
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extern int errors; /* Error counter */
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extern long src_line; /* Current source line number */
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extern int wrong_line; /* Force #line to compiler */
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extern int newlines; /* Count of blank lines */
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extern int keep_comments; /* Don't remove comments */
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extern int keep_spaces; /* Don't remove white spaces */
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extern int include_nest; /* Nesting level of #include */
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extern const char * null; /* "" string for convenience */
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extern const char ** inc_dirp; /* Directory of #includer */
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extern const char * cur_fname; /* Current source file name */
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extern int no_output; /* Don't output included file */
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extern int in_directive; /* In process of #directive */
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extern int in_define; /* In #define line */
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extern int in_getarg; /* Collecting arguments of macro*/
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extern int in_include; /* In #include line */
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extern int in_if; /* In #if and non-skipped expr. */
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extern long macro_line; /* Line number of macro call */
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extern char * macro_name; /* Currently expanding macro */
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extern int openum; /* Number of operator or punct. */
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extern IFINFO * ifptr; /* -> current ifstack item */
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extern FILEINFO * infile; /* Current input file or macro */
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extern FILE * fp_in; /* Input stream to preprocess */
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extern FILE * fp_out; /* Output stream preprocessed */
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extern FILE * fp_err; /* Diagnostics stream */
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extern FILE * fp_debug; /* Debugging information stream */
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extern int insert_sep; /* Inserted token separator flag*/
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extern int mkdep; /* Output source file dependency*/
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extern int mbchar; /* Encoding of multi-byte char */
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extern int mbchk; /* Possible multi-byte char */
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extern int bsl_in_mbchar; /* 2nd byte of mbchar has '\\' */
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extern int bsl_need_escape;/* '\\' in mbchar should be escaped */
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extern int mcpp_debug; /* Class of debug information */
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extern long in_asm; /* In #asm - #endasm block */
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extern jmp_buf error_exit; /* Exit on fatal error */
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extern char * cur_fullname; /* Full name of current source */
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extern short * char_type; /* Character classifier */
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extern char * workp; /* Free space in work[] */
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extern char * const work_end; /* End of work[] buffer */
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extern char identifier[]; /* Lastly scanned name */
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extern IFINFO ifstack[]; /* Information of #if nesting */
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extern char work_buf[];
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extern FILEINFO * sh_file;
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extern int sh_line;
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/* Temporary buffer for directive line and macro expansion */
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/* main.c */
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extern void un_predefine( int clearall);
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/* Undefine predefined macros */
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/* directive.c */
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extern void directive( void);
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/* Process #directive line */
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extern DEFBUF * do_define( int ignore_redef, int predefine);
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/* Do #define directive */
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extern DEFBUF * look_id( const char * name);
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/* Look for a #define'd thing */
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extern DEFBUF ** look_prev( const char * name, int * cmp);
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/* Look for place to insert def.*/
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extern DEFBUF * look_and_install( const char * name, int numargs
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, const char * parmnames, const char * repl);
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/* Look and insert macro def. */
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extern DEFBUF * install_macro( const char * name, int numargs
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, const char * parmnames, const char * repl, DEFBUF ** prevp, int cmp
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, int predefine);
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/* Install a def to symbol table*/
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extern int undefine( const char * name);
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/* Delete from symbol table */
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extern void dump_a_def( const char * why, const DEFBUF * dp, int newdef
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, int comment, FILE * fp);
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/* Dump a specific macro def */
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extern void dump_def( int comment, int K_opt);
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/* Dump current macro defs */
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/* eval.c */
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extern expr_t eval_if( void);
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/* Evaluate #if expression */
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extern VAL_SIGN * eval_num( const char * nump);
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/* Evaluate preprocessing number*/
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/* expand.c */
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extern char * (* expand_macro)( DEFBUF * defp, char * out, char * out_end
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, LINE_COL line_col, int * pragma_op);
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/* Expand a macro completely */
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extern void expand_init( int compat, int strict_ansi);
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/* Initialize expand_macro() */
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extern DEFBUF * is_macro( char ** cp);
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/* The sequence is a macro call?*/
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/* mbchar.c */
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extern size_t (* mb_read)( int c1, char ** in_pp, char ** out_pp);
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/* Read mbchar sequence */
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extern const char * set_encoding( char * name, char * env, int pragma);
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/* Multi-byte char encoding */
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extern void mb_init( void);
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/* Initialize mbchar variables */
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extern uexpr_t mb_eval( char ** seq_pp);
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/* Evaluate mbchar in #if */
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extern int last_is_mbchar( const char * in, int len);
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/* The line ends with MBCHAR ? */
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/* support.c */
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extern int get_unexpandable( int c, int diag);
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/* Get next unexpandable token */
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extern void skip_nl( void);
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/* Skip to the end of the line */
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extern int skip_ws( void);
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/* Skip over white-spaces */
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extern int scan_token( int c, char ** out_pp, char * out_end);
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/* Get the next token */
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extern char * scan_quote( int delim, char * out, char * out_end, int diag);
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/* Scan a quoted literal */
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extern int id_operator( const char * name);
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/* Check identifier-like ops */
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extern void expanding( const char * name, int to_be_freed);
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/* Save macro name expanding */
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extern void clear_exp_mac( void);
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/* Clear expanding macro infs */
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extern int get_ch( void);
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/* Get the next char from input */
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extern int cnv_trigraph( char * in);
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/* Do trigraph replacement */
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extern int cnv_digraph( char * in);
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/* Convert digraphs to usual tok*/
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extern void unget_ch( void);
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/* Push back the char to input */
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extern FILEINFO * unget_string( const char * text, const char * name);
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/* Push back the string to input*/
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extern char * save_string( const char * text);
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/* Stuff string in malloc mem. */
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extern FILEINFO * get_file( const char * name, const char * src_dir
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, const char * fullname, size_t bufsize, int include_opt);
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/* New FILEINFO initialization */
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extern char * (xmalloc)( size_t size);
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/* Get memory or die */
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extern char * (xrealloc)( char * ptr, size_t size);
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/* Reallocate memory or die */
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extern LINE_COL * get_src_location( LINE_COL * p_line_col);
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/* Get location on source file */
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extern void cfatal( const char * format, const char * arg1, long arg2
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, const char * arg3);
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/* Print a fatal error and exit */
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extern void cerror( const char * format, const char * arg1, long arg2
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, const char * arg3);
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/* Print an error message */
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extern void cwarn( const char * format, const char * arg1, long arg2
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, const char * arg3);
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/* Print a warning message */
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extern void dump_string( const char * why, const char * text);
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/* Dump text readably */
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extern void dump_unget( const char * why);
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/* Dump all ungotten junk */
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/* Support for alternate output mechanisms (e.g. memory buffers) */
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extern int (* mcpp_fputc)( int c, OUTDEST od),
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(* mcpp_fputs)( const char * s, OUTDEST od),
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(* mcpp_fprintf)( OUTDEST od, const char * format, ...);
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/* system.c */
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extern void do_options( int argc, char ** argv, char ** in_pp
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, char ** out_pp);
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/* Process command line args */
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extern void init_sys_macro( void);
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/* Define system-specific macro */
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extern void at_start( void);
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/* Commands prior to main input */
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extern void put_depend( const char * filename);
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/* Output source dependency line*/
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extern int do_include( int next);
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/* Process #include directive */
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extern void add_file( FILE * fp, const char * src_dir
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, const char * filename, const char * fullname, int include_opt);
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/* Chain the included file */
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extern void sharp( FILEINFO * sharp_file, int marker);
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/* Output # line number */
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extern void do_pragma( void);
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/* Process #pragma directive */
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extern void put_asm( void);
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/* Putout an asm code line */
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extern void do_old( void);
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/* Process older directives */
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extern void at_end( void);
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/* Do the final commands */
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extern void print_heap( void);
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/* Print blocks of heap memory */
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#if ! HOST_HAVE_STPCPY
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extern char * stpcpy( char * dest, const char * src);
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/* Non-Standard library function*/
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#endif
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#if MCPP_LIB /* Setting to use mcpp as a subroutine */
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/* directive.c */
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extern void clear_symtable( void);
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/* Free all macro definitions */
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/* system.c */
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extern void clear_filelist( void);
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/* Free filename and directory list */
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/* The following 5 functions are to Initialize static variables. */
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/* directive.c */
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extern void init_directive( void);
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/* eval.c */
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extern void init_eval( void);
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/* support.c */
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extern void init_support( void);
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/* system.c */
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extern void init_system( void);
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#if HOST_COMPILER == GNUC && (SYS_FAMILY == SYS_UNIX && SYSTEM != SYS_CYGWIN)
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#pragma GCC visibility pop
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#endif
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#endif
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#if HOST_HAVE_STPCPY && !defined(stpcpy)
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extern char * stpcpy( char * dest, const char * src);
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#endif
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