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|
%{
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "ledc.h"
%}
%union {
char* fString;
Tattr* fAttr;
Tlist* fList;
Telem* fElem;
Tparam* fParam;
}
%type <fAttr> attr_def
%type <fString> name_str
%type <fList> attr_list opt_attr param_list param_decl
%type <fElem> iupelem iupelem_decl
%type <fParam> param
%token '(' ')' '=' '[' ']' ','
%token <fString> NAME STRING
%start led
%%
led : /* empty */
| decl_list
;
decl_list : decl
| decl_list decl
;
decl : iupelem_decl
{ decl( $1 ); }
;
iupelem_decl : iupelem
{ $$ = $1; }
| NAME '=' iupelem
{ $$ = $3; $3->name = $1; named($1); }
;
iupelem : NAME opt_attr '(' param_decl ')'
{ $$ = elem( $1, $2, $4 ); }
param_decl : /* empty */
{ $$ = 0; }
| param_list
{ $$ = $1; }
;
param_list : param
{ $$ = list(); addlist( $$, $1 ); }
| param_list ',' param
{ $$ = addlist( $1, $3 ); }
;
param : NAME
{ $$ = param( NAME_PARAM, $1 ); }
| STRING
{ $$ = param( STRING_PARAM, $1 ); }
| iupelem_decl
{ $$ = param( ELEM_PARAM, $1 ); use($1->name); }
;
opt_attr : /* empty */
{ $$ = 0; }
| '[' attr_list ']'
{ $$ = revertlist( $2 ); }
;
attr_list : attr_def
{ $$ = list(); addlist( $$, $1 ); }
| attr_list ',' attr_def
{ addlist( $1, $3 ); }
;
attr_def : name_str '=' name_str
{ $$ = attr( $1, $3 ); }
;
name_str : NAME
| STRING
;
%%
extern int yylineno;
extern FILE *yyin;
int yywrap(void) { return 1; }
void yyerror(char *str)
{
error(" %s; last token read: %s",
str, yylval.fString);
}
static int usage(void)
{
fprintf( stderr,
"ledc [-v] [-c] [-f funcname] [-o file] files\n"
" -v print the version number\n"
" -c only perform checking, do not generate code\n"
" -f funcname generate exported function <funcname> (default: led_load)\n"
" -o file place output in file <file> (default: led.c)\n"
);
return -1;
}
int main(int argc, char *argv[])
{
if (argc < 2)
{
return usage();
}
while (argc > 1)
{
char *op = *(argv+1);
if (op[0] != '-') break;
argc--;
argv++;
switch (op[1])
{
case 'v':
printf("Iup 3.0 LED Compiler to C\n");
return 0;
break;
case 'o':
if (argc>1)
{
argc--;
argv++;
outname = *argv;
}
else return usage();
break;
case 'f':
if (argc>1)
{
argc--;
argv++;
funcname = *argv;
}
else return usage();
break;
case 'c':
nocode = 1;
break;
default:
return usage();
}
}
if (!outname) outname = "led.c";
if (!funcname) funcname = "led_load";
init();
while (--argc > 0)
{
char * name = *++argv;
filename = name;
if ((yyin = fopen(name, "r")) == NULL)
{
fprintf( stderr, "ledc: %s: %s\n", name,
#ifdef SunOS
"cannot open file"
#else
strerror(errno)
#endif
);
continue;
}
yylineno = 1;
yyparse();
fclose(yyin);
}
finish();
return 0;
}
|
