m4browser.c

linux 下的源代码分析阅读器 red hat公司新版

/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>
#include <errno.h>

/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif


#ifdef __cplusplus

#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#endif

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST

#else	/* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif	/* __STDC__ */
#endif	/* ! __cplusplus */

#ifdef __TURBOC__
 #pragma warn -rch
 #pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif


#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif


/* Returned upon end-of-file. */
#define YY_NULL 0

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN yy_start = 1 + 2 *

/* Translate the current start state into a value that can be later handed
 * to BEGIN to return to the state.  The YYSTATE alias is for lex
 * compatibility.
 */
#define YY_START ((yy_start - 1) / 2)
#define YYSTATE YY_START

/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)

/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct yy_buffer_state *YY_BUFFER_STATE;

extern int yyleng;
extern FILE *yyin, *yyout;

#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 * 	if ( condition_holds )
 *		yyless( 5 );
 *	else
 *		do_something_else();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define yyless(n) \
	do \
		{ \
		/* Undo effects of setting up yytext. */ \
		*yy_cp = yy_hold_char; \
		YY_RESTORE_YY_MORE_OFFSET \
		yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
		} \
	while ( 0 )

#define unput(c) yyunput( c, yytext_ptr )

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int yy_size_t;


struct yy_buffer_state
	{
	FILE *yy_input_file;

	char *yy_ch_buf;		/* input buffer */
	char *yy_buf_pos;		/* current position in input buffer */

	/* Size of input buffer in bytes, not including room for EOB
	 * characters.
	 */
	yy_size_t yy_buf_size;

	/* Number of characters read into yy_ch_buf, not including EOB
	 * characters.
	 */
	int yy_n_chars;

	/* Whether we "own" the buffer - i.e., we know we created it,
	 * and can realloc() it to grow it, and should free() it to
	 * delete it.
	 */
	int yy_is_our_buffer;

	/* Whether this is an "interactive" input source; if so, and
	 * if we're using stdio for input, then we want to use getc()
	 * instead of fread(), to make sure we stop fetching input after
	 * each newline.
	 */
	int yy_is_interactive;

	/* Whether we're considered to be at the beginning of a line.
	 * If so, '^' rules will be active on the next match, otherwise
	 * not.
	 */
	int yy_at_bol;

	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int yy_fill_buffer;

	int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
	 * shouldn't try reading from the input source any more.  We might
	 * still have a bunch of tokens to match, though, because of
	 * possible backing-up.
	 *
	 * When we actually see the EOF, we change the status to "new"
	 * (via yyrestart()), so that the user can continue scanning by
	 * just pointing yyin at a new input file.
	 */
#define YY_BUFFER_EOF_PENDING 2
	};

static YY_BUFFER_STATE yy_current_buffer = 0;

/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 */
#define YY_CURRENT_BUFFER yy_current_buffer


/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;

static int yy_n_chars;		/* number of characters read into yy_ch_buf */


int yyleng;

/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *) 0;
static int yy_init = 1;		/* whether we need to initialize */
static int yy_start = 0;	/* start state number */

/* Flag which is used to allow yywrap()'s to do buffer switches
 * instead of setting up a fresh yyin.  A bit of a hack ...
 */
static int yy_did_buffer_switch_on_eof;

void yyrestart YY_PROTO(( FILE *input_file ));

void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )

YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));

static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
static void yy_flex_free YY_PROTO(( void * ));

#define yy_new_buffer yy_create_buffer

#define yy_set_interactive(is_interactive) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_is_interactive = is_interactive; \
	}

#define yy_set_bol(at_bol) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_at_bol = at_bol; \
	}

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)

typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;
extern char *yytext;
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION \
	yytext_ptr = yy_bp; \
	yyleng = (int) (yy_cp - yy_bp); \
	yy_hold_char = *yy_cp; \
	*yy_cp = '\0'; \
	yy_c_buf_p = yy_cp;

#define YY_NUM_RULES 15
#define YY_END_OF_BUFFER 16
static yyconst short int yy_accept[134] =
    {   0,
        0,    0,    0,    0,   16,    3,    3,    5,    3,    3,
        3,    3,    3,    3,    3,    3,    3,    3,    1,    2,
        3,    0,    0,    0,    0,    6,    0,    0,    0,    0,
        4,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    7,    0,    0,   12,   10,    0,    0,    0,    0,
        0,   13,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    7,    0,    0,    0,    0,    0,    0,    0,
        0,    8,    0,    0,    9,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,

        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        0,   12,    0,    0,    0,    0,    0,    0,    0,    0,
       12,    0,    0,    0,    0,   11,    0,    0,    0,    0,
        0,   14,    0
    } ;

static yyconst int yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    1,    1,    4,    5,    6,    1,    1,    7,
        8,    1,    9,   10,   11,    1,   12,   13,   13,   13,
       13,   14,   13,   13,   13,   13,   13,   15,    1,    1,
       16,    1,   17,    1,   18,   19,   20,   21,   22,   23,
       19,   19,   24,   19,   19,   19,   19,   25,   19,   19,
       26,   27,   19,   19,   28,   19,   19,   19,   19,   19,
       29,   30,   31,    1,   32,    1,   33,   33,   33,   34,

       35,   36,   33,   33,   37,   33,   33,   38,   39,   40,
       33,   33,   33,   33,   33,   33,   33,   33,   33,   33,
       33,   33,   41,    1,   42,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static yyconst int yy_meta[43] =
    {   0,
        1,    2,    1,    3,    1,    1,    1,    1,    1,    1,
        1,    1,    4,    4,    1,    1,    1,    5,    5,    5,
        5,    5,    5,    5,    5,    5,    5,    5,    2,    1,
        1,    5,    5,    5,    5,    5,    5,    5,    5,    5,
        6,    1
    } ;

static yyconst short int yy_base[149] =
    {   0,
        0,   41,   37,   68,  298,  299,   44,  299,  294,  255,
      275,    0,  289,  253,   53,   95,   30,  278,  299,  299,
       53,   45,  288,  250,  286,  299,    0,  284,   67,   78,
      299,   86,  134,   62,  273,  134,  254,  253,  132,  252,
      245,    0,    0,    0,  299,  299,   84,   82,  250,  249,
      248,  299,   74,  258,  133,  251,  275,    0,  170,   81,
      255,  254,  240,  251,  250,  249,  135,  228,  101,  119,
      227,  149,  299,  137,  246,  245,  231,  242,  238,  240,
      139,  299,  220,  219,  299,  162,  237,  236,  222,  229,
      228,  227,  140,  164,  226,  225,  208,  219,  207,  190,

      176,  177,  189,  188,  171,  194,  168,  182,  187,  152,
      122,   70,  104,  189,  190,   75,  143,    0,    0,  105,
       77,  197,    0,    0,  198,  299,   65,    0,  200,   25,
       46,  299,  299,  217,  219,  222,  224,  227,   48,  229,
      231,  236,  241,  243,   47,  245,   46,  247
    } ;

static yyconst short int yy_def[149] =
    {   0,
      133,    1,    1,    2,  133,  133,  133,  133,  134,  135,
      136,  136,  133,  136,  133,  133,   16,  136,  133,  133,
       16,  133,  134,  133,  134,  133,  137,  138,  136,  136,
      133,  136,  133,  133,  133,   16,   36,   36,  136,   36,
      133,  137,  139,  140,  133,  133,  136,  136,  133,  133,
      133,  133,   36,   36,  136,   36,  133,  141,  140,  136,
      133,  133,  133,   36,   36,   36,  136,  141,  142,  142,
      142,  142,  133,  136,  133,  133,  133,   36,   36,   36,
      136,  133,  142,  142,  133,  136,  133,  133,  133,   36,
       36,   36,  136,  136,  133,  133,  133,   36,   36,   36,

      136,  136,  133,  133,  133,   36,   36,  136,  136,  133,
      133,  143,   36,  136,  136,  143,  143,  144,  145,   36,
      133,  144,  146,  147,  133,  133,  146,  148,  133,  148,
      133,  133,    0,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133
    } ;

static yyconst short int yy_nxt[342] =
    {   0,
        6,    7,    8,    9,   10,    6,    6,    6,    6,    6,
        6,    6,    6,    6,    6,    6,    6,   11,   12,   12,
       12,   12,   12,   12,   12,   12,   12,   12,    6,   13,
        6,   12,   12,   14,   12,   12,   12,   12,   12,   12,
        6,    6,   15,   19,   20,   22,   22,   23,   23,   36,
      128,  123,   58,  132,   33,  131,   23,   36,   16,   17,
       17,   17,   17,   17,   17,   17,   17,   17,   17,    7,
       34,  117,   40,   45,   19,   20,  117,   24,   24,   18,
       36,   49,   46,   23,   45,   21,   24,   45,   45,   50,
       45,   35,   45,   46,   64,  129,   46,   46,  119,   46,

       65,   46,   74,  119,   84,  124,   12,   36,   36,   47,
       60,  121,   36,   36,   37,   36,   36,   36,   36,   36,
       36,   36,   38,   48,   84,  120,   36,   29,   29,   29,
       29,   29,   29,   29,   29,   33,   52,   23,   45,   45,
       45,   45,   85,   45,  117,   45,   45,   46,   46,   46,
       46,   34,   46,   36,   46,   46,  110,   84,  116,   84,
       85,   36,   86,   55,   84,   84,   67,   24,   45,   81,
       45,  119,   35,   69,   93,   70,  101,   46,   71,   46,
       71,   71,   45,   45,   72,   71,   71,  102,   45,   94,
       85,   46,   46,   45,  113,  112,  121,   46,  125,  125,

      112,  125,   46,  109,   46,   46,  126,  126,  115,  126,
      111,   73,  110,  110,  106,  108,  114,   25,   25,   25,
       25,   25,   25,   27,   27,   29,   29,   42,   42,   44,
      107,   44,   59,   59,   68,   68,   83,   83,   83,   83,
       83,   83,  118,  106,  105,  118,  122,  122,  127,  127,
      130,  130,  104,  103,  100,   99,   98,   97,   96,   95,
       85,   85,   92,   91,   90,   89,   88,   87,   85,   82,
       80,   79,   78,   77,   76,   75,   23,   65,   66,   63,
       62,   61,   57,   56,   54,   53,   51,   43,   26,   41,
       26,   39,   32,   31,   30,   28,   26,  133,    5,  133,

      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133
    } ;

static yyconst short int yy_chk[342] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    2,    3,    3,    7,   22,    7,   22,   17,
      147,  145,  139,  131,   15,  130,   15,   17,    2,    2,
        2,    2,    2,    2,    2,    2,    2,    2,    2,    4,
       15,  112,   21,   29,    4,    4,  116,    7,   22,    2,
       21,   34,   29,   48,   30,    4,   15,   60,   48,   34,
       47,   15,   32,   30,   53,  127,   60,   48,  112,   47,

       53,   32,   60,  116,   69,  121,    4,   16,   16,   30,
       47,  120,   16,   16,   16,   16,   16,   16,   16,   16,
       16,   16,   16,   32,   70,  113,   16,   16,   16,   16,
       16,   16,   16,   16,   16,   33,   36,   33,   39,   55,
       36,   67,   69,   74,  117,   81,   93,   39,   55,   36,
       67,   33,   74,   36,   81,   93,  111,   72,  110,   72,
       70,   36,   74,   39,   72,   72,   55,   33,   86,   67,
       94,  117,   33,   59,   81,   59,   93,   86,   59,   94,
       59,   59,  101,  102,   59,   59,   59,   94,  108,   86,
       72,  101,  102,  109,  107,  114,  115,  108,  122,  125,

      106,  129,  109,  102,  114,  115,  122,  125,  109,  129,
      105,   59,  104,  103,  100,  101,  108,  134,  134,  134,
      134,  134,  134,  135,  135,  136,  136,  137,  137,  138,
       99,  138,  140,  140,  141,  141,  142,  142,  142,  142,
      142,  142,  143,   98,   97,  143,  144,  144,  146,  146,
      148,  148,   96,   95,   92,   91,   90,   89,   88,   87,
       84,   83,   80,   79,   78,   77,   76,   75,   71,   68,
       66,   65,   64,   63,   62,   61,   57,   56,   54,   51,
       50,   49,   41,   40,   38,   37,   35,   28,   25,   24,
       23,   18,   14,   13,   11,   10,    9,    5,  133,  133,

      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133,  133,  133,  133,  133,  133,  133,  133,  133,  133,
      133
    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "m4browser.l"
#define INITIAL 0
/*

Copyright (c) 2000, 2001, Red Hat, Inc.

This file is part of Source-Navigator.

Source-Navigator 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 2, or (at your option)
any later version.

Source-Navigator 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 Source-Navigator; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA.



*/
/*
 * m4browser.l
 *
 * Copyright (C) 2000 Red Hat Inc.
 *
 * Description:
 * Lex input file for an M4 macro language processor.
 */
#line 36 "m4browser.l"

#include <ctype.h>
#include <stdio.h>
#include "snptools.h"
#include "lexinput.h"

#undef yywrap
#define YY_SKIP_YYWRAP

#undef YY_INPUT
#define YY_INPUT(buf,r,ms) (r = sn_encoded_input(buf, ms))

static char group[] = "m4";

#define MAX_SIZE 512

static char current_function[MAX_SIZE] = {""};

/* line number where highlight starts and ends */
static int  current_function_highlight_line;

/* in "AC_DEFUN([MACRO], [])" column of 'M' in "MACRO" */
static int  current_function_highlight_column_start;

/* in "AC_DEFUN([MACRO], [])" column of 'O' in "MACRO" */
static int  current_function_highlight_column_end;

/* line where macro declaration begins */
static int  current_function_line_start;

/* line where closing paren of macro appears */
static int  current_function_line_end;

/* in "AC_DEFUN([MACRO], [])" column of 'A' in "AC_DEFUN" */
static int  current_function_column_start;

/* in "AC_DEFUN([MACRO], [])" column of ')' in "[])" */
static int  current_function_column_end;

static int  current_function_paren_count;