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|
%option prefix="LayYY"
%option outfile="lex.yy.c"
%{
#ifndef FLEX_SCANNER
#undef input
#undef unput
#endif
#include <X11/Xlib.h>
#include <X11/Xresource.h>
#include <X11/IntrinsicP.h>
#include <X11/StringDefs.h>
#include <X11/Xaw3d/LayoutP.h>
#include "laygram.h"
#define yylval LayYYlval
#define yyerror LayYYerror
#define yysetsource LayYYsetsource
static char *yysourcebase, *yysource;
#ifndef FLEX_SCANNER
#define input() (*yysource++)
#define unput(c) (--yysource)
#else
#include <string.h>
static void my_yyinput(char *buf, int *result, int max_size);
#define YY_INPUT(buf, res, max) my_yyinput(buf, &(res), max)
#endif
static int count (char *s, char c);
%}
%%
vertical return VERTICAL;
horizontal return HORIZONTAL;
"{" return OC;
"}" return CC;
"(" return OP;
")" return CP;
"<" return OA;
">" return CA;
infinity { yylval.ival = 1; return INFINITY; }
inff* { yylval.ival = count(yytext, 'f'); return INFINITY; }
[0-9][0-9]* { yylval.ival = atoi(yytext); return NUMBER; }
"=" { return EQUAL; }
"$" { return DOLLAR; }
"+" { yylval.oval = Plus; return PLUS; }
"-" { yylval.oval = Minus; return MINUS; }
"*" { yylval.oval = Times; return TIMES; }
"/" { yylval.oval = Divide; return DIVIDE; }
"%" { yylval.oval = Percent; return PERCENT; }
%[ \t\n]*of { yylval.oval = Percent; return PERCENTOF; }
width return WIDTH;
height return HEIGHT;
\\[a-zA-Z_][a-zA-Z0-9_]* {
#ifdef FLEX_SCANNER
yytext[yyleng] = '\0';
#else
yytext[yyleng-1] = '\0';
#endif
yylval.qval = XrmStringToQuark (yytext+1);
return NAME;
}
[a-zA-Z_][a-zA-Z0-9_]* {
#ifdef FLEX_SCANNER
yytext[yyleng] = '\0';
#else
yytext[yyleng-1] = '\0';
#endif
yylval.qval = XrmStringToQuark (yytext);
return NAME;
}
" " ;
"\t" ;
"\n" ;
. fprintf (stderr, "ignoring %c\n", *yytext);
%%
static int
count (char *s, char c)
{
int i = 0;
while (*s)
if (*s++ == c)
i++;
return i;
}
void yysetsource(char *s)
{
yysourcebase = yysource = s;
}
void yyerror(char *s)
{
char *t;
fprintf (stderr, "%s\n", s);
t = yysource - 50;
if (t < yysourcebase)
t = yysourcebase;
while (*t && t < yysource + 50) {
if (t == yysource)
putc ('@', stderr);
putc (*t++, stderr);
}
if (t == yysource)
putc ('@', stderr);
if (!*t)
fprintf (stderr, "<EOF>");
fprintf (stderr, "\n");
}
#ifdef FLEX_SCANNER
static void
my_yyinput(char *buf, int *result, int max_size)
{
int size = max_size < strlen(yysource) ? max_size : strlen(yysource);
strncpy(buf, yysource, size);
yysource += size;
*result = size;
}
#endif
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