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Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $.

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* src/symtab.h, src/symtab.c (eoftoken, axiom): Rename as...
(endtoken, accept): these.
* src/reader.c (reader): Set endtoken's default tag to "$end".
Set undeftoken's tag to "$undefined" instead of "$undefined.".
* doc/bison.texinfo (Table of Symbols): Mention $accept and $end.
Adjust.
This commit is contained in:
Akim Demaille
2002-07-29 17:30:33 +00:00
parent 1bfb97dba5
commit 88bce5a2ef
15 changed files with 163 additions and 131 deletions
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16
src/symtab.c
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@@ -32,8 +32,8 @@
symbol_t *errtoken = NULL;
symbol_t *undeftoken = NULL;
symbol_t *eoftoken = NULL;
symbol_t *axiom = NULL;
symbol_t *endtoken = NULL;
symbol_t *accept = NULL;
symbol_t *startsymbol = NULL;
location_t startsymbol_location;
@@ -181,11 +181,11 @@ symbol_user_token_number_set (symbol_t *symbol,
symbol->tag);
symbol->user_token_number = user_token_number;
/* User defined EOF token? */
/* User defined $end token? */
if (user_token_number == 0)
{
eoftoken = symbol;
eoftoken->number = 0;
endtoken = symbol;
endtoken->number = 0;
/* It is always mapped to 0, so it was already counted in
NTOKENS. */
--ntokens;
@@ -322,7 +322,7 @@ symbol_pack (symbol_t *this)
prec and assoc fields and make both the same */
if (this->number == NUMBER_UNDEFINED)
{
if (this == eoftoken || this->alias == eoftoken)
if (this == endtoken || this->alias == endtoken)
this->number = this->alias->number = 0;
else
{
@@ -540,8 +540,8 @@ symbols_token_translations_init (void)
token_translations = XCALLOC (symbol_number_t, max_user_token_number + 1);
/* Initialize all entries for literal tokens to 2, the internal
token number for $undefined., which represents all invalid
inputs. */
token number for $undefined, which represents all invalid inputs.
*/
for (i = 0; i < max_user_token_number + 1; i++)
token_translations[i] = undeftoken->number;
symbols_do (symbol_translation, NULL);