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Don't store the token defs in a muscle, just be ready to output it

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on command.  Now possible via `symbols'.  Fixes a memory leak.
* src/output.c (token_definitions_output): New.
(output_parser, header_output): Use it.
* src/reader.c (symbols_save): Remove.
This commit is contained in:
Akim Demaille
2001-12-29 14:25:27 +00:00
parent cce7171088
commit 091e20bbee
4 changed files with 62 additions and 56 deletions
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52
src/reader.c
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@@ -1658,56 +1658,6 @@ packsymbols (void)
}
/*---------------------------------------------------------------.
| Save the definition of token names in the `TOKENDEFS' muscle. |
`---------------------------------------------------------------*/
static void
symbols_save (void)
{
struct obstack tokendefs;
bucket *bp;
obstack_init (&tokendefs);
for (bp = firstsymbol; bp; bp = bp->next)
{
char *symbol = bp->tag; /* get symbol */
if (bp->value >= ntokens)
continue;
if (bp->user_token_number == SALIAS)
continue;
if ('\'' == *symbol)
continue; /* skip literal character */
if (bp == errtoken)
continue; /* skip error token */
if ('\"' == *symbol)
{
/* use literal string only if given a symbol with an alias */
if (bp->alias)
symbol = bp->alias->tag;
else
continue;
}
/* Don't #define nonliteral tokens whose names contain periods. */
if (strchr (symbol, '.'))
continue;
obstack_fgrow2 (&tokendefs, "# define %s\t%d\n",
symbol, bp->user_token_number);
if (semantic_parser)
/* FIXME: This is probably wrong, and should be just as
above. --akim. */
obstack_fgrow2 (&tokendefs, "# define T%s\t%d\n", symbol, bp->value);
}
obstack_1grow (&tokendefs, 0);
muscle_insert ("tokendef", xstrdup (obstack_finish (&tokendefs)));
obstack_free (&tokendefs, NULL);
}
/*---------------------------------------------------------------.
| Convert the rules into the representation using RRHS, RLHS and |
| RITEMS. |
@@ -1867,8 +1817,6 @@ reader (void)
/* Assign the symbols their symbol numbers. Write #defines for the
token symbols into FDEFINES if requested. */
packsymbols ();
/* Save them. */
symbols_save ();
/* Convert the grammar into the format described in gram.h. */
packgram ();