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cameo: adding toolpath adaptation language (in progress)

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- README: added description of toolpath adaptation language (in progress)
- Makefile (OBJS): added lex.yy.o and y.tab.o
- Makefile (SLOPPY): relaxed compiler warnings for files generated by
  flex/yacc
- Makefile (clean): added lex/yacc intermediate files
- Makefile: added lex and yacc (bison) to build process
- Makefile: added rules for lex/yacc intermediate files
- lang.l, lang.y: toolpath adaptation language (in progress)
This commit is contained in:
Werner Almesberger
2010-12-14 13:41:37 -03:00
parent 8999b3016a
commit f80a01a9c0
4 changed files with 369 additions and 2 deletions
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cameo/lang.l Normal file
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%{
/*
* lang.l - Toolpath adaptation language
*
* Written 2010 by Werner Almesberger
* Copyright 2010 by Werner Almesberger
*
* 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 2 of the License, or
* (at your option) any later version.
*/
#include <stdlib.h>
#include <stdio.h>
#include "y.tab.h"
void yyerror(const char *s);
static int lineno = 1;
static int metric = 1;
#define MIL2MM(mil) ((mil)/1000*25.4)
%}
/* file name can contain any characters */
%s FILENAME
/* "align" has a one-digit argument we don't want to subject to unit
conversion */
%s DIGIT
NUM [0-9]+\.?[0-9]*
%%
<INITIAL>align { BEGIN(DIGIT);
return TOK_ALIGN; }
<INITIAL>array return TOK_ARRAY;
<INITIAL>clear return TOK_CLEAR;
<INITIAL>reset return TOK_RESET;
<INITIAL>tool return TOK_TOOL;
<INITIAL>translate return TOK_TRANSLATE;
<INITIAL>z return TOK_Z;
<INITIAL>gerber { BEGIN(FILENAME);
return TOK_GERBER; }
<INITIAL>gnuplot { BEGIN(FILENAME);
return TOK_GNUPLOT; }
<INITIAL>write { BEGIN(FILENAME);
return TOK_WRITE; }
<INITIAL>mm metric = 1;
<INITIAL>mil metric = 0;
<INITIAL,FILENAME>{NUM}mm { yylval.num = strtod(yytext, NULL);
return NUMBER; }
<INITIAL,FILENAME>{NUM}mil { yylval.num = MIL2MM(strtod(yytext, NULL));
return NUMBER; }
<INITIAL,FILENAME>{NUM} { yylval.num = strtod(yytext, NULL);
if (!metric)
yylval.num = MIL2MM(yylval.num);
return NUMBER; }
<FILENAME>[^ \t\n]+([^\t\n]*[^ \t\n]+)? {
BEGIN(INITIAL);
yylval.str = yytext;
return STRING; }
<DIGIT>[1-9] { BEGIN(INITIAL);
yylval.num = strtod(yytext, NULL);
return NUMBER; }
[ \t] ;
\n lineno++;
^#\ [0-9]+\ \"[^"]*\"(\ [0-9]+)*\n {
lineno = strtol(yytext+2, NULL, 0); }
. return *yytext;
%%
void yyerror(const char *s)
{
fprintf(stderr, "%d: %s near \"%s\"\n", lineno, s, yytext);
exit(1);
}