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Added begin_speedmode() which is called by parser.y

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Added state SPEEDMODE for fast skipping of designs
Introduced definitions for PWORD, PBOX, and PWHITE (whitespace)
Added %options nounput and noyywrap for easier compilation/linking
This commit is contained in:
Thomas Jensen 1999-07-02 11:58:15 +00:00
parent dcaccc130c
commit 3baafb88f2
1 changed files with 48 additions and 10 deletions
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58
src/lexer.l
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@ -4,7 +4,7 @@
* Date created: March 15, 1999 (Monday, 17:16h) * Date created: March 15, 1999 (Monday, 17:16h)
* Author: Thomas Jensen * Author: Thomas Jensen
* tsjensen@stud.informatik.uni-erlangen.de * tsjensen@stud.informatik.uni-erlangen.de
* Version: $Id: lexer.l,v 1.10 1999/06/28 12:17:46 tsjensen Exp tsjensen $ * Version: $Id: lexer.l,v 1.11 1999/06/28 18:37:38 tsjensen Exp tsjensen $
* Language: lex (ANSI C) * Language: lex (ANSI C)
* Purpose: flex lexical analyzer for boxes configuration files * Purpose: flex lexical analyzer for boxes configuration files
* Remarks: --- * Remarks: ---
@ -12,6 +12,12 @@
* Revision History: * Revision History:
* *
* $Log: lexer.l,v $ * $Log: lexer.l,v $
* Revision 1.11 1999/06/28 18:37:38 tsjensen
* Replaced DEBUG macro with LEXER_DEBUG, which is now activated in boxes.h
* New tokens to, with, global, once
* Added LEX_MAX_WARN macro to limit number of lex errors printed per design
* Replaced exit()s with return YUNREC where errors are not fatal
*
* Revision 1.10 1999/06/28 12:17:46 tsjensen * Revision 1.10 1999/06/28 12:17:46 tsjensen
* Added tokens YBOX and YEND (thus, BOX and END are no longer YKEYWORDs) * Added tokens YBOX and YEND (thus, BOX and END are no longer YKEYWORDs)
* Added #define FILE_LEXER_L around #include boxes.h to please compiler * Added #define FILE_LEXER_L around #include boxes.h to please compiler
@ -56,14 +62,15 @@
#undef FILE_LEXER_L #undef FILE_LEXER_L
#include "tools.h" #include "tools.h"
#include "y.tab.h" #include "y.tab.h"
#include "parser.h"
#define LEX_MAX_WARN 3 /* number of errors per design */ #define LEX_MAX_WARN 3 /* number of lex errors per design */
static const char rcsid_lexer_l[] = static const char rcsid_lexer_l[] =
"$Id: lexer.l,v 1.10 1999/06/28 12:17:46 tsjensen Exp tsjensen $"; "$Id: lexer.l,v 1.11 1999/06/28 18:37:38 tsjensen Exp tsjensen $";
int yylineno = 1; int yylineno = 1;
@ -71,16 +78,24 @@ int yyerrcnt = 0;
%} %}
%option nounput
%option noyywrap
%x SAMPLE1 %x SAMPLE1
%x SAMPLE2 %x SAMPLE2
%x SPEEDMODE
%s SHAPES %s SHAPES
%s ELASTIC %s ELASTIC
PWORD [a-zA-ZäöüÄÖÜ][a-zA-Z0-9\-_üäöÜÄÖß]*
PWHITE [\n \r\t]
PBOX Box
%% %%
<SAMPLE1,SHAPES,ELASTIC,INITIAL>[\r\t ]+ /* ignore whitespace */ <SAMPLE1,SHAPES,ELASTIC,INITIAL>[ \r\t] /* ignore whitespace */
<SAMPLE1,SHAPES,ELASTIC,INITIAL>\n yylineno++; <SAMPLE1,SHAPES,ELASTIC,INITIAL>\n ++yylineno;
\"[^"\n]*$ { \"[^"\n]*$ {
if (yyerrcnt++ < 5) if (yyerrcnt++ < 5)
@ -139,7 +154,7 @@ Sample {
return yytext[0]; return yytext[0];
} }
<SAMPLE1>[^{\n\t\r ]+ { <SAMPLE1>[^\{\n\r\t ]+ {
if (yyerrcnt++ < 5) if (yyerrcnt++ < 5)
yyerror ("Syntax Error at \"%s\"", yytext); yyerror ("Syntax Error at \"%s\"", yytext);
return YUNREC; return YUNREC;
@ -213,9 +228,9 @@ Shapes {
return YSHAPES; return YSHAPES;
} }
Box { {PBOX} {
#ifdef LEXER_DEBUG #ifdef LEXER_DEBUG
fprintf (stderr, "\nYBOX: %s", yytext); fprintf (stderr, "\n YBOX: %s", yytext);
#endif #endif
yyerrcnt = 0; yyerrcnt = 0;
return YBOX; return YBOX;
@ -281,7 +296,7 @@ author|created|revision|revdate|indent {
} }
[a-zA-ZäöüÄÖÜ][a-zA-Z0-9\-_üäöÜÄÖß]* { {PWORD} {
#ifdef LEXER_DEBUG #ifdef LEXER_DEBUG
fprintf (stderr, "\n WORD: %s", yytext); fprintf (stderr, "\n WORD: %s", yytext);
#endif #endif
@ -321,12 +336,35 @@ author|created|revision|revdate|indent {
. { . {
if (yyerrcnt++ < LEX_MAX_WARN) if (yyerrcnt++ < LEX_MAX_WARN)
yyerror ("Unrecognized input at %s", yytext); yyerror ("Unrecognized input char \'%s\'", yytext);
return YUNREC; return YUNREC;
} }
<SPEEDMODE>{PBOX}{PWHITE}+{PWORD} {
#ifdef LEXER_DEBUG
fprintf (stderr, "\n STATUS: %s -- BEGIN INITIAL", yytext);
#endif
yyless (0);
speeding = 0;
BEGIN INITIAL;
}
<SPEEDMODE>\n ++yylineno;
<SPEEDMODE>. /* ignore anything else */
%% %%
void begin_speedmode()
{
#ifdef LEXER_DEBUG
fprintf (stderr, "\n STATUS: begin_speedmode() -- STATE SPEEDMODE");
#endif
BEGIN SPEEDMODE;
}
/*EOF*/ /* vim: set cindent sw=4: */ /*EOF*/ /* vim: set cindent sw=4: */