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

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