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Move symbols handling code out of the reader.

Browse Source 
* src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken)
(axiom): Move to...
* src/symtab.h, src/symtab.c: here.
* src/gram.c (start_symbol): Remove: use startsymbol->number.
* src/reader.c (startval): Rename as...
* src/symtab.h, src/symtab.c (startsymbol): this.
* src/reader.c: Adjust.
* src/reader.c (symbol_check_defined, symbol_make_alias)
(symbol_check_alias_consistence, symbol_pack, symbol_translation)
(token_translations_init)
Move to...
* src/symtab.c: here.
* src/reader.c (packsymbols): Move to...
* src/symtab.h, src/symtab.c (symbols_pack): here.
* src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as
argument.
This commit is contained in:
Akim Demaille
2002-06-10 08:35:39 +00:00
parent e9bca3aded
commit 2f1afb737f
18 changed files with 1071 additions and 1192 deletions
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45
src/symtab.h
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@@ -22,7 +22,9 @@
#ifndef SYMTAB_H_
# define SYMTAB_H_
#define TABSIZE 1009
/*----------.
| Symbols. |
`----------*/
/* Associativity values for tokens and rules. */
typedef enum
@@ -79,13 +81,48 @@ struct symbol_s
#define NUMBER_UNDEFINED ((symbol_number_t) -1)
/* Fetch (or create) the symbol associated to KEY. */
symbol_t *getsym PARAMS ((const char *key));
/* Declare the new SYMBOL. Make it an alias of SYMVAL, and type */
/* them with TYPENAME. */
void symbol_make_alias PARAMS ((symbol_t *symbol, symbol_t *symval,
char *typename));
/* Distinguished symbols. AXIOM is the real start symbol, that used
by the automaton. STARTSYMBOL is the one specified by the user.
*/
extern symbol_t *errtoken;
extern symbol_t *undeftoken;
extern symbol_t *eoftoken;
extern symbol_t *axiom;
extern symbol_t *startsymbol;
/*---------------.
| Symbol table. |
`---------------*/
/* Create the symbol table. */
void symbols_new PARAMS ((void));
/* A function to apply to each symbol. */
typedef bool (*symbol_processor) PARAMS ((symbol_t *));
symbol_t *getsym PARAMS ((const char *));
void symbols_new PARAMS ((void));
/* Apply PROCESSOR to all the symbols. PROCESSOR must return TRUE: on
FALSE, the processing stops. */
void symbols_do PARAMS ((symbol_processor processor, void *processor_data));
/* Free all the memory allocated for symbols. */
void symbols_free PARAMS ((void));
/* Check that all the symbols are defined. Report any undefined */
/* symbols and consider them nonterminals. */
void symbols_check_defined PARAMS ((void));
/* Perform various sanity checks, assign symbol numbers, and set up
TOKEN_TRANSLATIONS. */
void symbols_pack PARAMS ((void));
#endif /* !SYMTAB_H_ */