diff options
Diffstat (limited to 'glcpp-parse.y')
| -rw-r--r-- | glcpp-parse.y | 49 |
1 files changed, 43 insertions, 6 deletions
diff --git a/glcpp-parse.y b/glcpp-parse.y index a2d1094253..89dc46497f 100644 --- a/glcpp-parse.y +++ b/glcpp-parse.y @@ -27,30 +27,46 @@ #include "glcpp.h" -#define YYSTYPE int +#define YYLEX_PARAM parser->scanner void yyerror (void *scanner, const char *error); %} -%parse-param {void *scanner} +%parse-param {glcpp_parser_t *parser} %lex-param {void *scanner} +%token DEFINE +%token DEFVAL +%token IDENTIFIER %token TOKEN %% input: /* empty */ - | tokens + | content ; +content: token + | directive + | content token + | content directive +; -tokens: token - | tokens token +directive: DEFINE IDENTIFIER DEFVAL { + hash_table_insert (parser->defines, $3, $2); +} ; -token: TOKEN +token: TOKEN { + char *value = hash_table_find (parser->defines, $1); + if (value) + printf ("%s", value); + else + printf ("%s", $1); + free ($1); +} ; %% @@ -60,3 +76,24 @@ yyerror (void *scanner, const char *error) { fprintf (stderr, "Parse error: %s\n", error); } + +void +glcpp_parser_init (glcpp_parser_t *parser) +{ + yylex_init (&parser->scanner); + parser->defines = hash_table_ctor (32, hash_table_string_hash, + hash_table_string_compare); +} + +int +glcpp_parser_parse (glcpp_parser_t *parser) +{ + return yyparse (parser); +} + +void +glcpp_parser_fini (glcpp_parser_t *parser) +{ + yylex_destroy (parser->scanner); + hash_table_dtor (parser->defines); +} |