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%{
/*
* fpd.l - FootPrint Definition language
*
* Written 2009, 2010, 2012 by Werner Almesberger
* Copyright 2009, 2010, 2012 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 "util.h"
#include "coord.h"
#include "expr.h"
#include "error.h"
#include "meas.h"
#include "fpd.h"
#include "y.tab.h"
static int start_token = START_FPD;
static int disable_keywords = 0;
static int is_table = 0;
void scan_empty(void)
{
yy_scan_string("");
}
void scan_file(void)
{
start_token = START_FPD;
}
void scan_expr(const char *s)
{
start_token = START_EXPR;
yy_scan_string(s);
}
void scan_var(const char *s)
{
start_token = START_VAR;
yy_scan_string(s);
}
void scan_values(const char *s)
{
start_token = START_VALUES;
yy_scan_string(s);
}
%}
/* keywords are only accepted at the beginning of a line */
%s NOKEYWORD
/* ALLOW is followed by special keywords (we could use NOKEYWORD as well) */
%s ALLOW
NUM [0-9]+\.?[0-9]*
SP [\t ]*
%%
%{
/*
* Nice hack:
*
* http://www.gnu.org/software/bison/manual/bison.html#
* Multiple-start_002dsymbols
*/
if (start_token) {
int tmp = start_token;
start_token = 0;
return tmp;
}
%}
<INITIAL>"set" { BEGIN(NOKEYWORD);
return TOK_SET; }
<INITIAL>"loop" { BEGIN(NOKEYWORD);
return TOK_LOOP; }
<INITIAL>"part" { BEGIN(NOKEYWORD);
return TOK_PACKAGE; }
<INITIAL>"package" { BEGIN(NOKEYWORD);
return TOK_PACKAGE; }
<INITIAL>"frame" { BEGIN(NOKEYWORD);
is_table = 0;
return TOK_FRAME; }
<INITIAL>"table" { BEGIN(NOKEYWORD);
is_table = 1;
return TOK_TABLE; }
<INITIAL>"vec" { BEGIN(NOKEYWORD);
return TOK_VEC; }
<INITIAL>"pad" { BEGIN(NOKEYWORD);
return TOK_PAD; }
<INITIAL>"rpad" { BEGIN(NOKEYWORD);
return TOK_RPAD; }
<INITIAL>"hole" { BEGIN(NOKEYWORD);
return TOK_HOLE; }
<INITIAL>"rect" { BEGIN(NOKEYWORD);
return TOK_RECT; }
<INITIAL>"line" { BEGIN(NOKEYWORD);
return TOK_LINE; }
<INITIAL>"circ" { BEGIN(NOKEYWORD);
return TOK_CIRC; }
<INITIAL>"arc" { BEGIN(NOKEYWORD);
return TOK_ARC; }
<INITIAL>"meas" { BEGIN(NOKEYWORD);
return TOK_MEAS; }
<INITIAL>"measx" { BEGIN(NOKEYWORD);
return TOK_MEASX; }
<INITIAL>"measy" { BEGIN(NOKEYWORD);
return TOK_MEASY; }
<INITIAL>"unit" { BEGIN(NOKEYWORD);
return TOK_UNIT; }
<INITIAL>"allow" BEGIN(ALLOW);
<ALLOW>"overlap" return TOK_ALLOW_OVERLAP;
<ALLOW>"touch" return TOK_ALLOW_TOUCH;
<INITIAL>"%del" { BEGIN(NOKEYWORD);
return TOK_DBG_DEL; }
<INITIAL>"%move" { BEGIN(NOKEYWORD);
return TOK_DBG_MOVE; }
<INITIAL>"%frame" { BEGIN(NOKEYWORD);
return TOK_DBG_FRAME; }
<INITIAL>"%print" { BEGIN(NOKEYWORD);
return TOK_DBG_PRINT; }
<INITIAL>"%iprint" { BEGIN(NOKEYWORD);
return TOK_DBG_IPRINT; }
<INITIAL>"%meas" { BEGIN(NOKEYWORD);
return TOK_DBG_MEAS; }
<INITIAL>"%dump" { BEGIN(NOKEYWORD);
return TOK_DBG_DUMP; }
<INITIAL>"%exit" { BEGIN(NOKEYWORD);
return TOK_DBG_EXIT; }
<INITIAL>"%tsort" { BEGIN(NOKEYWORD);
return TOK_DBG_TSORT; }
<INITIAL>[a-zA-Z_][a-zA-Z_0-9]*: { *strchr(yytext, ':') = 0;
yylval.id = unique(yytext);
return LABEL; }
[a-zA-Z_][a-zA-Z_0-9]* { yylval.id = unique(yytext);
return ID; }
{NUM}{SP}mm { yylval.num.type = nt_mm;
yylval.num.exponent = 1;
sscanf(yytext, "%lf", &yylval.num.n);
return NUMBER; }
{NUM}{SP}mil { yylval.num.type = nt_mil;
yylval.num.exponent = 1;
sscanf(yytext, "%lf", &yylval.num.n);
return NUMBER; }
{NUM} { yylval.num.type = nt_mm; /* mm or mil */
yylval.num.exponent = 0;
sscanf(yytext, "%lf", &yylval.num.n);
return NUMBER; }
\"(\\[^\n\t]|[^\\"\n\t])*\" { *strrchr(yytext, '"') = 0;
yylval.str = stralloc(yytext+1);
return STRING; }
"->" return TOK_NEXT;
"<-" return TOK_NEXT_INVERTED;
">>" return TOK_MAX;
"<<" return TOK_MAX_INVERTED;
{SP} ;
\n { if (!disable_keywords)
BEGIN(INITIAL);
lineno++; }
; BEGIN(INITIAL);
"{" { disable_keywords = is_table;
BEGIN(disable_keywords ?
NOKEYWORD : INITIAL);
return '{'; }
"}" { disable_keywords = 0;
BEGIN(INITIAL);
return '}'; }
^#\ [0-9]+\ \"[^"]*\"(\ [0-9]+)*\n {
if (!disable_keywords)
BEGIN(INITIAL);
lineno = strtol(yytext+2, NULL, 0); }
. return *yytext;
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