130 lines
3.1 KiB
Plaintext
130 lines
3.1 KiB
Plaintext
%{
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/*
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* lang.l - Toolpath adaptation language
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*
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* Written 2010-2013, 2015 by Werner Almesberger
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* Copyright 2010-2013, 2015 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "y.tab.h"
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void yyerror(const char *s);
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static int lineno = 1;
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static int metric = 1;
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static int file_name_follows = 0;
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%}
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/* file name can contain any characters */
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%s FILENAME
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/* "align" has a one-digit argument we don't want to subject to unit
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conversion */
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%s DIGIT
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NUM -?[0-9]+\.?[0-9]*
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%%
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<INITIAL>align { BEGIN(DIGIT);
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return TOK_ALIGN; }
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<INITIAL>area return TOK_AREA;
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<INITIAL>array return TOK_ARRAY;
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<INITIAL>clear return TOK_CLEAR;
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<INITIAL>drill return TOK_DRILL;
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<INITIAL>empty return TOK_EMPTY;
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<INITIAL>flip return TOK_FLIP;
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<INITIAL>keep return TOK_KEEP;
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<INITIAL>mill return TOK_MILL;
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<INITIAL>offset return TOK_OFFSET;
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<INITIAL>optimize return TOK_OPTIMIZE;
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<INITIAL>outside return TOK_OUTSIDE;
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<INITIAL>purge return TOK_PURGE;
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<INITIAL>remainder return TOK_REMAINDER;
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<INITIAL>remove return TOK_REMOVE;
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<INITIAL>reset return TOK_RESET;
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<INITIAL>reverse return TOK_REVERSE;
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<INITIAL>rotate return TOK_ROTATE;
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<INITIAL>stats return TOK_STATS;
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<INITIAL>translate return TOK_TRANSLATE;
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<INITIAL>x return TOK_X;
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<INITIAL>y return TOK_Y;
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<INITIAL>z return TOK_Z;
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<INITIAL>append/[ \t\n] { BEGIN(FILENAME);
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return TOK_APPEND; }
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<INITIAL>gerber { file_name_follows = 1;
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return TOK_GERBER; }
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<INITIAL>gnuplot { file_name_follows = 1;
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return TOK_GNUPLOT; }
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<INITIAL>excellon/[ \t\n] { BEGIN(FILENAME);
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return TOK_EXCELLON; }
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<INITIAL>stl/[ \t\n] { BEGIN(FILENAME);
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return TOK_STL; }
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<INITIAL>write/[ \t\n] { BEGIN(FILENAME);
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return TOK_WRITE; }
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<INITIAL>write_gerber/[ \t\n] { BEGIN(FILENAME);
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return TOK_WRITE_GERBER; }
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<INITIAL>dog return TOK_DOG;
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<INITIAL>inside return TOK_INSIDE;
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<INITIAL>any return TOK_ANY;
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<INITIAL>mm metric = 1;
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<INITIAL>mil metric = 0;
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<DIGIT>[1-9] { BEGIN(INITIAL);
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yylval.num = strtod(yytext, NULL);
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return REF; }
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{NUM}mm { yylval.num = strtod(yytext, NULL);
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if (file_name_follows)
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BEGIN(FILENAME);
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return NUM_EXP_MM; }
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{NUM}mil { yylval.num = strtod(yytext, NULL);
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if (file_name_follows)
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BEGIN(FILENAME);
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return NUM_EXP_MIL; }
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{NUM} { yylval.num = strtod(yytext, NULL);
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if (file_name_follows)
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BEGIN(FILENAME);
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return metric ? NUM_IMP_MM : NUM_IMP_MIL; }
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<FILENAME>[^ \t\n]+([^\t\n]*[^ \t\n]+)? {
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BEGIN(INITIAL);
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file_name_follows = 0;
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yylval.str = yytext;
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return STRING; }
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[ \t] ;
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\n { BEGIN(INITIAL);
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lineno++; }
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^#\ [0-9]+\ \"[^"]*\"(\ [0-9]+)*\n {
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lineno = strtol(yytext+2, NULL, 0); }
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<INITIAL>#.*\n lineno++;
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. return *yytext;
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%%
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void yyerror(const char *s)
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{
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fprintf(stderr, "%d: %s near \"%s\"\n", lineno, s, yytext);
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exit(1);
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}
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