Dogcows Code - chaz/openbox/blob - openbox/parse.y

   1 %{
   2 #include <glib.h>
   3 #ifdef HAVE_STDIO_H
   4 #  include <stdio.h>
   5 #endif
   6
   7 %}
   8
   9 %union ParseToken {
  10     float real;
  11     int integer;
  12     char *string;
  13     char *identifier;
  14     gboolean bool;
  15     char character;
  16 }
  17
  18 %{
  19 #include "parse.h"
  20
  21 extern int yylex();
  22 extern int yyparse();
  23 void yyerror(char *err);
  24
  25 extern int yylineno;
  26 extern FILE *yyin;
  27
  28 static char *path;
  29 static union ParseToken t;
  30
  31 /* in parse.c */
  32 void parse_token(ParseTokenType type, union ParseToken token);
  33 void parse_set_section(char *section);
  34 %}
  35
  36 %token <real> REAL
  37 %token <integer> INTEGER
  38 %token <string> STRING
  39 %token <identifier> IDENTIFIER
  40 %token <bool> BOOL
  41 %token <character> '('
  42 %token <character> ')'
  43 %token <character> '{'
  44 %token <character> '}'
  45 %token <character> '='
  46 %token <character> ','
  47 %token <character> '\n'
  48 %token INVALID
  49
  50 %%
  51
  52 sections:
  53   | sections '[' IDENTIFIER ']' { parse_set_section($3); } '\n' lines
  54   ;
  55
  56 lines:
  57   | lines tokens '\n' { t.character = $3; parse_token($3, t); }
  58   ;
  59
  60 tokens:
  61     tokens token
  62   | token
  63   ;
  64
  65 token:
  66     REAL       { t.real = $1; parse_token(REAL, t); }
  67   | INTEGER    { t.integer = $1; parse_token(INTEGER, t); }
  68   | STRING     { t.string = $1; parse_token(STRING, t); }
  69   | IDENTIFIER { t.identifier = $1; parse_token(IDENTIFIER, t); }
  70   | BOOL       { t.bool = $1; parse_token(BOOL, t); }
  71   | '('        { t.character = $1; parse_token($1, t); }
  72   | ')'        { t.character = $1; parse_token($1, t); }
  73   | '{'        { t.character = $1; parse_token($1, t); }
  74   | '}'        { t.character = $1; parse_token($1, t); }
  75   | '='        { t.character = $1; parse_token($1, t); }
  76   | ','        { t.character = $1; parse_token($1, t); }
  77   ;
  78
  79 %%
  80
  81 void yyerror(char *err) {
  82     g_message("%s:%d: %s", path, yylineno, err);
  83 }
  84
  85 void parse_rc()
  86 {
  87     /* try the user's rc */
  88     path = g_build_filename(g_get_home_dir(), ".openbox", "rc3", NULL);
  89     if ((yyin = fopen(path, "r")) == NULL) {
  90         g_free(path);
  91         /* try the system wide rc */
  92         path = g_build_filename(RCDIR, "rc3", NULL);
  93         if ((yyin = fopen(path, "r")) == NULL) {
  94             g_warning("No rc2 file found!");
  95             g_free(path);
  96             return;
  97         }
  98     }
  99
 100     yylineno = 1;
 101
 102     yyparse();
 103
 104     g_free(path);
 105 }