scanner.c

支持AMD64的汇编编译器源码

/* Generated by re2c 0.9.1-C on Thu Aug 14 20:37:33 2003
 */
#line 1 "scanner.re"
#include <stdlib.h>
#include <string.h>
#include "tools/re2c/scanner.h"
#include "tools/re2c/parse.h"
#include "tools/re2c/globals.h"
#include "re2c-parser.h"

#define	BSIZE	8192

#define	YYCTYPE		unsigned char
#define	YYCURSOR	cursor
#define	YYLIMIT		s->lim
#define	YYMARKER	s->ptr
#define	YYFILL(n)	{cursor = fill(s, cursor);}

#define	RETURN(i)	{s->cur = cursor; return i;}

static unsigned char *fill(Scanner*, unsigned char*);

void
Scanner_init(Scanner *s, FILE *i)
{
    s->in = i;
    s->bot = s->tok = s->ptr = s->cur = s->pos = s->lim = s->top =
	     s->eof = NULL;
    s->tchar = s->tline = 0;
    s->cline = 1;
}

static unsigned char *
fill(Scanner *s, unsigned char *cursor)
{
    if(!s->eof){
	unsigned int cnt = s->tok - s->bot;
	if(cnt){
	    memcpy(s->bot, s->tok, s->lim - s->tok);
	    s->tok = s->bot;
	    s->ptr -= cnt;
	    cursor -= cnt;
	    s->pos -= cnt;
	    s->lim -= cnt;
	}
	if((s->top - s->lim) < BSIZE){
	    unsigned char *buf = malloc(((s->lim - s->bot) + BSIZE));
	    memcpy(buf, s->tok, s->lim - s->tok);
	    s->tok = buf;
	    s->ptr = &buf[s->ptr - s->bot];
	    cursor = &buf[cursor - s->bot];
	    s->pos = &buf[s->pos - s->bot];
	    s->lim = &buf[s->lim - s->bot];
	    s->top = &s->lim[BSIZE];
	    if (s->bot)
		free(s->bot);
	    s->bot = buf;
	}
	if((cnt = fread(s->lim, 1, BSIZE, s->in)) != BSIZE){
	    s->eof = &s->lim[cnt]; *s->eof++ = '\n';
	}
	s->lim += cnt;
    }
    return cursor;
}

#line 75 "scanner.re"


int
Scanner_echo(Scanner *s, FILE *out)
{
    unsigned char *cursor = s->cur;

    /* Catch EOF */
    if (s->eof && cursor == s->eof)
	return 0;

    s->tok = cursor;
echo:

#line 85 "scanner.c"
{
	YYCTYPE yych;
	unsigned int yyaccept;
	goto yy0;
	++YYCURSOR;
yy0:
	if((YYLIMIT - YYCURSOR) < 7) YYFILL(7);
	yych = *YYCURSOR;
	if(yych == '\n')	goto yy4;
	if(yych != '/')	goto yy6;
	yyaccept = 0;
	yych = *(YYMARKER = ++YYCURSOR);
	if(yych == '*')	goto yy7;
yy3:
#line 96 "scanner.re"
{ goto echo; }
#line 102 "scanner.c"
yy4:	yych = *++YYCURSOR;

#line 92 "scanner.re"
{ if(cursor == s->eof) RETURN(0);
				  fwrite(s->tok, 1, cursor - s->tok, out);
				  s->tok = s->pos = cursor; s->cline++; oline++;
				  goto echo; }
#line 110 "scanner.c"
yy6:	yych = *++YYCURSOR;
	goto yy3;
yy7:	yych = *++YYCURSOR;
	if(yych == '!')	goto yy9;
yy8:	YYCURSOR = YYMARKER;
	switch(yyaccept){
	case 0:	goto yy3;
	}
yy9:	yych = *++YYCURSOR;
	if(yych != 'r')	goto yy8;
	yych = *++YYCURSOR;
	if(yych != 'e')	goto yy8;
	yych = *++YYCURSOR;
	if(yych != '2')	goto yy8;
	yych = *++YYCURSOR;
	if(yych != 'c')	goto yy8;
	yych = *++YYCURSOR;

#line 89 "scanner.re"
{ fwrite(s->tok, 1, &cursor[-7] - s->tok, out);
				  s->tok = cursor;
				  RETURN(1); }
#line 133 "scanner.c"
}
#line 97 "scanner.re"

}


int
Scanner_scan(Scanner *s)
{
    unsigned char *cursor = s->cur;
    unsigned int depth;

scan:
    s->tchar = cursor - s->pos;
    s->tline = s->cline;
    s->tok = cursor;

#line 151 "scanner.c"
{
	YYCTYPE yych;
	unsigned int yyaccept;
	goto yy15;
	++YYCURSOR;
yy15:
	if((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if(yych <= ':'){
		if(yych <= '"'){
			if(yych <= '\n'){
				if(yych <= '\b')	goto yy35;
				if(yych <= '\t')	goto yy31;
				goto yy33;
			} else {
				if(yych == ' ')	goto yy31;
				if(yych <= '!')	goto yy35;
				goto yy23;
			}
		} else {
			if(yych <= '*'){
				if(yych <= '\'')	goto yy35;
				if(yych <= ')')	goto yy27;
				goto yy21;
			} else {
				if(yych <= '+')	goto yy28;
				if(yych == '/')	goto yy19;
				goto yy35;
			}
		}
	} else {
		if(yych <= 'Z'){
			if(yych <= '='){
				if(yych == '<')	goto yy35;
				goto yy27;
			} else {
				if(yych == '?')	goto yy28;
				if(yych <= '@')	goto yy35;
				goto yy29;
			}
		} else {
			if(yych <= '`'){
				if(yych <= '[')	goto yy25;
				if(yych <= '\\')	goto yy27;
				goto yy35;
			} else {
				if(yych <= 'z')	goto yy29;
				if(yych <= '{')	goto yy17;
				if(yych <= '|')	goto yy27;
				goto yy35;
			}
		}
	}
yy17:	yych = *++YYCURSOR;

#line 112 "scanner.re"
{ depth = 1;
				  goto code;
				}
#line 211 "scanner.c"
yy19:	yych = *++YYCURSOR;
	if(yych == '*')	goto yy54;
yy20:
#line 131 "scanner.re"
{ RETURN(*s->tok); }
#line 217 "scanner.c"
yy21:	yych = *++YYCURSOR;
	if(yych == '/')	goto yy52;
yy22:
#line 133 "scanner.re"
{ yylval.op = *s->tok;
				  RETURN(CLOSE); }
#line 224 "scanner.c"
yy23:	yyaccept = 0;
	yych = *(YYMARKER = ++YYCURSOR);
	if(yych != '\n')	goto yy48;
yy24:
#line 124 "scanner.re"
{ Scanner_fatal(s, "bad string"); }
#line 231 "scanner.c"
yy25:	yyaccept = 1;
	yych = *(YYMARKER = ++YYCURSOR);
	if(yych != '\n')	goto yy42;
yy26:
#line 129 "scanner.re"
{ Scanner_fatal(s, "bad character constant"); }
#line 238 "scanner.c"
yy27:	yych = *++YYCURSOR;
	goto yy20;
yy28:	yych = *++YYCURSOR;
	goto yy22;
yy29:	yych = *++YYCURSOR;
	goto yy40;
yy30:
#line 136 "scanner.re"
{ SubStr substr;
				  s->cur = cursor;
				  substr = Scanner_token(s);
				  yylval.symbol = Symbol_find(&substr);
				  return ID; }
#line 252 "scanner.c"
yy31:	yych = *++YYCURSOR;
	goto yy38;
yy32:
#line 142 "scanner.re"
{ goto scan; }
#line 258 "scanner.c"
yy33:	yych = *++YYCURSOR;

#line 144 "scanner.re"
{ if(cursor == s->eof) RETURN(0);
				  s->pos = cursor; s->cline++;
				  goto scan;
	    			}
#line 266 "scanner.c"
yy35:	yych = *++YYCURSOR;

#line 149 "scanner.re"
{ fprintf(stderr, "unexpected character: '%c'\n", *s->tok);
				  goto scan;
				}
#line 273 "scanner.c"
yy37:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy38:	if(yych == '\t')	goto yy37;
	if(yych == ' ')	goto yy37;
	goto yy32;
yy39:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy40:	if(yych <= '@'){
		if(yych <= '/')	goto yy30;
		if(yych <= '9')	goto yy39;
		goto yy30;
	} else {
		if(yych <= 'Z')	goto yy39;
		if(yych <= '`')	goto yy30;
		if(yych <= 'z')	goto yy39;
		goto yy30;
	}
yy41:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy42:	if(yych <= '['){
		if(yych != '\n')	goto yy41;
	} else {
		if(yych <= '\\')	goto yy44;
		if(yych <= ']')	goto yy45;
		goto yy41;
	}
yy43:	YYCURSOR = YYMARKER;
	switch(yyaccept){
	case 0:	goto yy24;
	case 1:	goto yy26;
	}
yy44:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if(yych == '\n')	goto yy43;
	goto yy41;
yy45:	yych = *++YYCURSOR;

#line 126 "scanner.re"
{ s->cur = cursor;
				  yylval.regexp = ranToRE(Scanner_token(s));
				  return RANGE; }
#line 319 "scanner.c"
yy47:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy48:	if(yych <= '!'){
		if(yych == '\n')	goto yy43;
		goto yy47;
	} else {
		if(yych <= '"')	goto yy50;
		if(yych != '\\')	goto yy47;
	}
	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if(yych == '\n')	goto yy43;
	goto yy47;
yy50:	yych = *++YYCURSOR;

#line 121 "scanner.re"
{ s->cur = cursor;
				  yylval.regexp = strToRE(Scanner_token(s));
				  return STRING; }
#line 341 "scanner.c"
yy52:	yych = *++YYCURSOR;

#line 118 "scanner.re"
{ s->tok = cursor;
				  RETURN(0); }
#line 347 "scanner.c"
yy54:	yych = *++YYCURSOR;

#line 115 "scanner.re"
{ depth = 1;
				  goto comment; }
#line 353 "scanner.c"
}
#line 152 "scanner.re"


code:

#line 360 "scanner.c"
{
	YYCTYPE yych;
	unsigned int yyaccept;
	goto yy56;
	++YYCURSOR;
yy56:
	if((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if(yych <= '&'){
		if(yych <= '\n'){
			if(yych <= '\t')	goto yy64;
			goto yy62;
		} else {
			if(yych == '"')	goto yy66;
			goto yy64;
		}
	} else {
		if(yych <= '{'){
			if(yych <= '\'')	goto yy67;
			if(yych <= 'z')	goto yy64;
			goto yy60;
		} else {
			if(yych != '}')	goto yy64;
		}
	}
	yych = *++YYCURSOR;

#line 156 "scanner.re"
{ if(--depth == 0){
					s->cur = cursor;
					yylval.token = Token_new(Scanner_token(s), s->tline);
					return CODE;
				  }
				  goto code; }
#line 395 "scanner.c"
yy60:	yych = *++YYCURSOR;

#line 162 "scanner.re"
{ ++depth;
				  goto code; }
#line 401 "scanner.c"
yy62:	yych = *++YYCURSOR;

#line 164 "scanner.re"
{ if(cursor == s->eof) Scanner_fatal(s, "missing '}'");
				  s->pos = cursor; s->cline++;
				  goto code;
				}
#line 409 "scanner.c"
yy64:	yych = *++YYCURSOR;
yy65:
#line 168 "scanner.re"
{ goto code; }
#line 414 "scanner.c"
yy66:	yyaccept = 0;
	yych = *(YYMARKER = ++YYCURSOR);
	if(yych == '\n')	goto yy65;
	goto yy73;
yy67:	yyaccept = 0;
	yych = *(YYMARKER = ++YYCURSOR);
	if(yych == '\n')	goto yy65;
	goto yy69;
yy68:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy69:	if(yych <= '&'){
		if(yych != '\n')	goto yy68;
	} else {
		if(yych <= '\'')	goto yy64;
		if(yych == '\\')	goto yy71;
		goto yy68;
	}
yy70:	YYCURSOR = YYMARKER;
	switch(yyaccept){
	case 0:	goto yy65;
	}
yy71:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if(yych == '\n')	goto yy70;
	goto yy68;
yy72:	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
yy73:	if(yych <= '!'){
		if(yych == '\n')	goto yy70;
		goto yy72;
	} else {
		if(yych <= '"')	goto yy64;
		if(yych != '\\')	goto yy72;
	}
	++YYCURSOR;
	if(YYLIMIT == YYCURSOR) YYFILL(1);
	yych = *YYCURSOR;
	if(yych == '\n')	goto yy70;
	goto yy72;
}
#line 169 "scanner.re"


comment:

#line 463 "scanner.c"
{
	YYCTYPE yych;
	unsigned int yyaccept;
	goto yy75;
	++YYCURSOR;
yy75:
	if((YYLIMIT - YYCURSOR) < 2) YYFILL(2);
	yych = *YYCURSOR;
	if(yych <= ')'){
		if(yych == '\n')	goto yy80;
		goto yy82;
	} else {
		if(yych <= '*')	goto yy77;
		if(yych == '/')	goto yy79;
		goto yy82;
	}
yy77:	yych = *++YYCURSOR;
	if(yych == '/')	goto yy85;
yy78:
#line 183 "scanner.re"
{ goto comment; }
#line 485 "scanner.c"
yy79:	yych = *++YYCURSOR;
	if(yych == '*')	goto yy83;
	goto yy78;
yy80:	yych = *++YYCURSOR;

#line 179 "scanner.re"
{ if(cursor == s->eof) RETURN(0);
				  s->tok = s->pos = cursor; s->cline++;
				  goto comment;
				}
#line 496 "scanner.c"
yy82:	yych = *++YYCURSOR;
	goto yy78;
yy83:	yych = *++YYCURSOR;

#line 177 "scanner.re"
{ ++depth;
				  goto comment; }
#line 504 "scanner.c"
yy85:	yych = *++YYCURSOR;

#line 173 "scanner.re"
{ if(--depth == 0)
					goto scan;
				    else
					goto comment; }
#line 512 "scanner.c"
}
#line 184 "scanner.re"

}

void
Scanner_fatal(Scanner *s, const char *msg)
{
    fprintf(stderr, "line %d, column %d: %s\n", s->tline, s->tchar + 1, msg);
    exit(1);
}