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Keep track of location in parser

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This commit is contained in:
Dave Davenport 2016-12-12 16:55:31 +01:00
parent d6ec7b1de8
commit c6030063c6
3 changed files with 67 additions and 35 deletions
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88
lexer/theme-lexer.l
View file

@ -1,22 +1,40 @@
%option noyywrap nounput batch
%option noyywrap nounput
%option bison-locations
%{
#include <stdio.h>
#include "lexer/theme-parser.h"
int yylex(void);
#define YY_DECL int yylex()
%}
%{
#define YY_USER_ACTION {\
yylloc->last_column+= yyleng;\
}
#define YY_LLOC_START {\
yylloc->first_line = yylloc->last_line; yylloc->first_column = yylloc->last_column;\
}
%}
%%
%{
YY_LLOC_START
%}
"//" {
int c;
while ((c = input()) != EOF)
while ((c = input()) != EOF){
if (c == '\n') {
yylloc->last_column = 1;
yylloc->last_line ++;
break;
}
yylloc->last_column++;
}
YY_LLOC_START
}
"/*" {
int c = 0, p;
@ -25,13 +43,20 @@ int yylex(void);
p = c;
c = input();
switch (c) {
case '*': if (p == '/') { c = 0; nesting_depth++; } break;
case '/': if (p == '*') { c = 0; nesting_depth--; } break;
case '\n': break;
case '*': yylloc->last_column++; if (p == '/') { c = 0; nesting_depth++; } break;
case '/': yylloc->last_column++; if (p == '*') { c = 0; nesting_depth--; } break;
case '\n': {
yylloc->last_column = 1;
yylloc->last_line ++;
break;
}
case EOF: nesting_depth = 0; break;
default: ;
default:
yylloc->last_column++;
;
}
}
YY_LLOC_START
}
"\{" { return BOPEN;}
"\}" { return BCLOSE;}
@ -39,47 +64,50 @@ int yylex(void);
";" { return PCLOSE;}
"." { return NSEP; }
[ \t] ; // ignore all whitespace
[0-9]+\.[0-9]+ { yylval.fval = g_ascii_strtod(yytext, NULL); return T_DOUBLE;}
[0-9]+ { yylval.ival = (int)g_ascii_strtoll(yytext, NULL, 10); return T_INT;}
(true|false) { yylval.bval= g_strcmp0(yytext, "true") == 0; return T_BOOLEAN;}
[_\-a-zA-Z0-9]+ { yylval.sval = g_strdup(yytext); return N_STRING;}
\"[_\-a-zA-Z0-9 \t]+\" { yytext[yyleng-1] = '\0'; yylval.sval = g_strdup(&yytext[1]); return T_STRING;}
[0-9]+\.[0-9]+ { yylval->fval = g_ascii_strtod(yytext, NULL); return T_DOUBLE;}
[0-9]+ { yylval->ival = (int)g_ascii_strtoll(yytext, NULL, 10); return T_INT;}
(true|false) { yylval->bval= g_strcmp0(yytext, "true") == 0; return T_BOOLEAN;}
[_\-a-zA-Z0-9]+ { yylval->sval = g_strdup(yytext); return N_STRING;}
\"[_\-a-zA-Z0-9 \t]+\" { yytext[yyleng-1] = '\0'; yylval->sval = g_strdup(&yytext[1]); return T_STRING;}
#[0-9A-Fa-f]{8} {
union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
val.val = (unsigned int)strtoull ( &yytext[1], NULL, 16);
yylval.colorval.alpha = val.a/255.0;
yylval.colorval.red = val.r/255.0;
yylval.colorval.green = val.g/255.0;
yylval.colorval.blue = val.b/255.0;
yylval->colorval.alpha = val.a/255.0;
yylval->colorval.red = val.r/255.0;
yylval->colorval.green = val.g/255.0;
yylval->colorval.blue = val.b/255.0;
return T_COLOR;
}
#[0-9A-Fa-f]{6} {
union { unsigned int val; struct { unsigned char b,g,r,a;};} val;
val.val = (unsigned int)g_ascii_strtoull ( &yytext[1], NULL, 16);
yylval.colorval.alpha = 1.0;
yylval.colorval.red = val.r/255.0;
yylval.colorval.green = val.g/255.0;
yylval.colorval.blue = val.b/255.0;
yylval->colorval.alpha = 1.0;
yylval->colorval.red = val.r/255.0;
yylval->colorval.green = val.g/255.0;
yylval->colorval.blue = val.b/255.0;
return T_COLOR;
}
rgba\([0-9]{1,3},[0-9]{1,3},[0-9]{1,3},[01](\.[0-9]+)?\) {
char *endptr = &yytext[5];
yylval.colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval.colorval.green= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval.colorval.blue= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval.colorval.alpha= g_ascii_strtod ( endptr+1, NULL);
yylval->colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval->colorval.green= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.blue= g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.alpha= g_ascii_strtod ( endptr+1, NULL);
return T_COLOR;
}
rgb\([0-9]{1,3},[0-9]{1,3},[0-9]{1,3}\) {
char *endptr = &yytext[4];
yylval.colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval.colorval.green = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval.colorval.blue = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval.colorval.alpha = 1.0;
yylval->colorval.red = g_ascii_strtoull ( endptr, &endptr, 10);
yylval->colorval.green = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.blue = g_ascii_strtoull ( endptr+1, &endptr, 10);
yylval->colorval.alpha = 1.0;
return T_COLOR;
}
[\r\n]+ ;
(\r\n|\n) {
yylloc->last_column = 1;
yylloc->last_line ++;
};
<*><<EOF>> {
yyterminate();

6
lexer/theme-parser.y
View file

@ -1,3 +1,4 @@
%define api.pure
%glr-parser
%skeleton "glr.c"
%locations
@ -11,11 +12,12 @@
#include <stdio.h>
#include <stdlib.h>
void yyerror(const char* s);
int yylex (void );
#include "theme.h"
#include "lexer/theme-parser.h"
Widget *rofi_theme = NULL;
void yyerror(YYLTYPE *yylloc, const char* s);
int yylex (YYSTYPE *, YYLTYPE *);
%}
%union {

8
source/theme.c
View file

@ -3,14 +3,15 @@
#include <errno.h>
#include <string.h>
#include "theme.h"
#include "lexer/theme-parser.h"
void yyerror ( YYLTYPE *ylloc, const char *);
void yyerror ( const char *);
Widget *rofi_theme_find_or_create_class ( Widget *base, const char *class )
{
for ( unsigned int i = 0; i < base->num_widgets;i++){
if ( g_strcmp0(base->widgets[i]->name, class) == 0 ){
return base->widgets[i];
}
}
}
base->widgets = g_realloc ( base->widgets, sizeof(Widget*)*(base->num_widgets+1));
@ -116,8 +117,9 @@ extern int yyparse();
extern FILE* yyin;
extern Widget *rofi_theme;
void yyerror(const char* s) {
void yyerror(YYLTYPE *yylloc, const char* s) {
fprintf(stderr, "Parse error: %s\n", s);
fprintf(stderr, "From line %d column %d to line %d column %d\n", yylloc->first_line, yylloc->first_column, yylloc->last_line, yylloc->last_column);
exit(EXIT_FAILURE);
}
/**