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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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53
src/output.c
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@@ -567,6 +567,54 @@ guards_output (FILE *out, size_t *line)
}
/*---------------------------------------.
| Output the tokens definition to OOUT. |
`---------------------------------------*/
static void
token_definitions_output (FILE *out, size_t *line)
{
int i;
for (i = 0; i < ntokens; ++i)
{
bucket *symbol = symbols[i];
int number = symbol->user_token_number;
if (number == SALIAS)
continue;
/* Skip error token. */
if (symbol->value == error_token_number)
continue;
if (symbol->tag[0] == '\'')
continue; /* skip literal character */
if (symbol->tag[0] == '\"')
{
/* use literal string only if given a symbol with an alias */
if (symbol->alias)
symbol = symbol->alias;
else
continue;
}
/* Don't #define nonliteral tokens whose names contain periods
or '$' (as does the default value of the EOF token). */
if (strchr (symbol->tag, '.') || strchr (symbol->tag, '$'))
continue;
fprintf (out, "# define %s\t%d\n",
symbol->tag, number);
++*line;
if (semantic_parser)
{
/* FIXME: This is probably wrong, and should be just as
above. --akim. */
fprintf (out, "# define T%s\t%d\n", symbol->tag, symbol->value);
++*line;
}
}
}
static void
save_column (int symbol, int default_state)
{
@@ -963,6 +1011,8 @@ output_parser (const char *skel_filename, FILE *out)
guards_output (out, &output_line);
else if (!strcmp (muscle_key, "line"))
fprintf (out, "%d", output_line);
else if (!strcmp (muscle_key, "tokendef"))
token_definitions_output (out, &output_line);
else if (!strcmp (muscle_key, "skeleton-line"))
fprintf (out, "%d", skeleton_line);
else if (muscle_value)
@@ -1059,13 +1109,14 @@ prepare (void)
static void
header_output (void)
{
size_t dummy_line;
FILE *out = xfopen (spec_defines_file, "w");
char *macro_name = compute_header_macro ();
fprintf (out, "#ifndef %s\n", macro_name);
fprintf (out, "# define %s\n\n", macro_name);
fputs (muscle_find ("tokendef"), out);
token_definitions_output (out, &dummy_line);
fprintf (out, "\
#ifndef YYSTYPE\n\
typedef %s