static int lowzero;
static int high;
-struct obstack muscle_obstack;
static struct obstack format_obstack;
int error_verbose = 0;
}
-/*------------------------------------------------------------------.
-| Create a function NAME which Format the FIRST and then |
-| TABLE_DATA[BEGIN..END[ (of TYPE) into OOUT, and return the number |
-| of bits needed for its longuest value. |
-`------------------------------------------------------------------*/
+/*-------------------------------------------------------------------.
+| Create a function NAME which associates to the muscle NAME the |
+| result of formatting the FIRST and then TABLE_DATA[BEGIN..END[ (of |
+| TYPE), and to the muscle NAME_max, the max value of the |
+| TABLE_DATA. |
+`-------------------------------------------------------------------*/
-#define GENERATE_OUTPUT_TABLE(Name, Type) \
+#define GENERATE_MUSCLE_INSERT_TABLE(Name, Type) \
\
-static inline long int \
-Name (struct obstack *oout, \
+static void \
+Name (const char *name, \
Type *table_data, \
Type first, \
int begin, \
int end) \
{ \
- long int max = first; \
+ Type max = first; \
int i; \
int j = 1; \
\
- obstack_fgrow1 (oout, "%6d", first); \
+ obstack_fgrow1 (&format_obstack, "%6d", first); \
for (i = begin; i < end; ++i) \
{ \
- obstack_1grow (oout, ','); \
+ obstack_1grow (&format_obstack, ','); \
if (j >= 10) \
{ \
- obstack_sgrow (oout, "\n "); \
+ obstack_sgrow (&format_obstack, "\n "); \
j = 1; \
} \
else \
++j; \
- obstack_fgrow1 (oout, "%6d", table_data[i]); \
+ obstack_fgrow1 (&format_obstack, "%6d", table_data[i]); \
if (table_data[i] > max) \
max = table_data[i]; \
} \
- obstack_1grow (oout, 0); \
+ obstack_1grow (&format_obstack, 0); \
+ muscle_insert (name, obstack_finish (&format_obstack)); \
\
- return max; \
+ /* Build `NAME_max' in the obstack. */ \
+ obstack_fgrow1 (&format_obstack, "%s_max", name); \
+ obstack_1grow (&format_obstack, 0); \
+ MUSCLE_INSERT_LONG_INT (obstack_finish (&format_obstack), \
+ (long int) max); \
}
-GENERATE_OUTPUT_TABLE(output_int_table, int)
-GENERATE_OUTPUT_TABLE(output_short_table, short)
-GENERATE_OUTPUT_TABLE(output_token_number_table, token_number_t)
-GENERATE_OUTPUT_TABLE(output_item_number_table, item_number_t)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_unsigned_int_table, unsigned int)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_short_table, short)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_symbol_number_table, symbol_number_t)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_item_number_table, item_number_t)
/*-----------------------------------------------------------------.
static void
prepare_tokens (void)
{
- long int max = output_token_number_table (&format_obstack,
- token_translations,
- 0, 1, max_user_token_number + 1);
- muscle_insert ("translate", obstack_finish (&format_obstack));
- MUSCLE_INSERT_LONG_INT ("token_number_max", max);
- XFREE (token_translations);
+ muscle_insert_symbol_number_table ("translate",
+ token_translations,
+ 0, 1, max_user_token_number + 1);
{
int i;
int j = 0;
for (i = 0; i < nsyms; i++)
{
- /* Be sure not to use twice the same quotearg slot. */
+ /* Be sure not to use twice the same QUOTEARG slot:
+ SYMBOL_TAG_GET uses slot 0. */
const char *cp =
quotearg_n_style (1, c_quoting_style,
- quotearg_style (escape_quoting_style,
- symbols[i]->tag));
+ symbol_tag_get (symbols[i]));
/* Width of the next token, including the two quotes, the coma
and the space. */
int strsize = strlen (cp) + 2;
short *values = XCALLOC (short, ntokens + 1);
for (i = 0; i < ntokens + 1; ++i)
values[i] = symbols[i]->user_token_number;
- output_short_table (&format_obstack, values,
- 0, 1, ntokens + 1);
- muscle_insert ("toknum", obstack_finish (&format_obstack));
+ muscle_insert_short_table ("toknum", values,
+ 0, 1, ntokens + 1);
free (values);
}
}
static void
prepare_rules (void)
{
- long int max;
- item_number_t *rhsp;
int r;
- int i = 0;
+ unsigned int i = 0;
item_number_t *rhs = XMALLOC (item_number_t, nritems);
- short *prhs = XMALLOC (short, nrules + 1);
- token_number_t *r1 = XMALLOC (token_number_t, nrules + 1);
- short *r2 = XMALLOC (short, nrules + 1);
- short *rline = XMALLOC (short, nrules + 1);
+ unsigned int *prhs = XMALLOC (unsigned int, nrules + 1);
+ unsigned int *rline = XMALLOC (unsigned int, nrules + 1);
+ symbol_number_t *r1 = XMALLOC (symbol_number_t, nrules + 1);
+ unsigned int *r2 = XMALLOC (unsigned int, nrules + 1);
for (r = 1; r < nrules + 1; ++r)
{
+ item_number_t *rhsp;
/* Index of rule R in RHS. */
prhs[r] = i;
/* RHS of the rule R. */
/* Separator in RHS. */
rhs[i++] = -1;
/* Line where rule was defined. */
- rline[r] = rules[r].line;
+ rline[r] = rules[r].location.first_line;
}
assert (i == nritems);
- max = output_int_table (&format_obstack, rhs, ritem[0], 1, nritems);
- muscle_insert ("rhs", obstack_finish (&format_obstack));
- MUSCLE_INSERT_LONG_INT ("rhs_number_max", max);
-
- output_short_table (&format_obstack, prhs, 0, 1, nrules + 1);
- muscle_insert ("prhs", obstack_finish (&format_obstack));
-
- output_short_table (&format_obstack, rline, 0, 1, nrules + 1);
- muscle_insert ("rline", obstack_finish (&format_obstack));
-
- output_token_number_table (&format_obstack, r1, 0, 1, nrules + 1);
- muscle_insert ("r1", obstack_finish (&format_obstack));
-
- output_short_table (&format_obstack, r2, 0, 1, nrules + 1);
- muscle_insert ("r2", obstack_finish (&format_obstack));
+ muscle_insert_item_number_table ("rhs", rhs, ritem[0], 1, nritems);
+ muscle_insert_unsigned_int_table ("prhs", prhs, 0, 1, nrules + 1);
+ muscle_insert_unsigned_int_table ("rline", rline, 0, 1, nrules + 1);
+ muscle_insert_symbol_number_table ("r1", r1, 0, 1, nrules + 1);
+ muscle_insert_unsigned_int_table ("r2", r2, 0, 1, nrules + 1);
free (rhs);
free (prhs);
+ free (rline);
+ free (r1);
free (r2);
}
prepare_states (void)
{
size_t i;
- token_number_t *values =
- (token_number_t *) alloca (sizeof (token_number_t) * nstates);
+ symbol_number_t *values =
+ (symbol_number_t *) alloca (sizeof (symbol_number_t) * nstates);
for (i = 0; i < nstates; ++i)
values[i] = states[i]->accessing_symbol;
- output_token_number_table (&format_obstack, values,
- 0, 1, nstates);
- muscle_insert ("stos", obstack_finish (&format_obstack));
+ muscle_insert_symbol_number_table ("stos", values,
+ 0, 1, nstates);
}
for (j = 0; j < ntokens; j++)
/* and record this rule as the rule to use if that
token follows. */
- if (bitset_test (LA[state->lookaheadsp + i], j))
- actrow[j] = -LArule[state->lookaheadsp + i]->number;
+ if (bitset_test (state->lookaheads[i], j))
+ actrow[j] = -state->lookaheads_rule[i]->number;
}
/* Now see which tokens are allowed for shifts in this state. For
to reduce. */
for (i = 0; i < shiftp->nshifts; i++)
{
- token_number_t symbol;
+ symbol_number_t symbol;
int shift_state = shiftp->shifts[i];
if (!shift_state)
continue;
for (i = 0; i < state->nlookaheads; i++)
{
int count = 0;
- int rule = -LArule[state->lookaheadsp + i]->number;
+ int rule = -state->lookaheads_rule[i]->number;
int j;
for (j = 0; j < ntokens; j++)
save_row (i);
}
- output_short_table (&format_obstack, yydefact,
- yydefact[0], 1, nstates);
- muscle_insert ("defact", obstack_finish (&format_obstack));
-
+ muscle_insert_short_table ("defact", yydefact,
+ yydefact[0], 1, nstates);
XFREE (actrow);
XFREE (yydefact);
}
actions_output (FILE *out)
{
int rule;
+
+ fputs ("m4_define([b4_actions], \n[[", out);
for (rule = 1; rule < nrules + 1; ++rule)
if (rules[rule].action)
{
if (!no_lines_flag)
fprintf (out, muscle_find ("linef"),
- rules[rule].action_line,
+ rules[rule].action_location.first_line,
quotearg_style (c_quoting_style,
muscle_find ("filename")));
- /* As a Bison extension, add the ending semicolon. Since some
- Yacc don't do that, help people using bison as a Yacc
- finding their missing semicolons. */
- fprintf (out, "{ %s%s }\n break;\n\n",
- rules[rule].action,
- yacc_flag ? ";" : "");
+ fprintf (out, " %s\n break;\n\n",
+ rules[rule].action);
}
+ fputs ("]])\n\n", out);
}
{
int i;
int first = 1;
+
+ fputs ("m4_define([b4_tokens], \n[", out);
for (i = 0; i < ntokens; ++i)
{
symbol_t *symbol = symbols[i];
int number = symbol->user_token_number;
- if (number == SALIAS)
- continue;
+ /* At this stage, if there are literal aliases, they are part of
+ SYMBOLS, so we should not find symbols which are the aliases
+ here. */
+ assert (number != USER_NUMBER_ALIAS);
+
/* Skip error token. */
if (symbol == errtoken)
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;
- }
+
+ /* If this string has an alias, then it is necessarily the alias
+ which is to be output. */
+ if (symbol->alias)
+ symbol = symbol->alias;
+
+ /* Don't output literal chars or strings (when defined only as a
+ string). Note that must be done after the alias resolution:
+ think about `%token 'f' "f"'. */
+ if (symbol->tag[0] == '\'' || symbol->tag[0] == '\"')
+ 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, "%s [[[%s]], [%d]]",
+ fprintf (out, "%s[[[%s]], [%d]]",
first ? "" : ",\n", symbol->tag, number);
+
first = 0;
}
+ fputs ("])\n\n", out);
+}
+
+
+/*----------------------------------------.
+| Output the symbol destructors to OOUT. |
+`----------------------------------------*/
+
+static void
+symbol_destructors_output (FILE *out)
+{
+ int i;
+ int first = 1;
+
+ fputs ("m4_define([b4_symbol_destructors], \n[", out);
+ for (i = 0; i < nsyms; ++i)
+ if (symbols[i]->destructor)
+ {
+ symbol_t *symbol = symbols[i];
+
+ /* Filename, lineno,
+ Symbol-name, Symbol-number,
+ destructor, typename. */
+ fprintf (out, "%s[[[%s]], [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]",
+ first ? "" : ",\n",
+ infile, symbol->destructor_location.first_line,
+ symbol_tag_get (symbol),
+ symbol->number,
+ symbol->destructor,
+ symbol->type_name);
+
+ first = 0;
+ }
+ fputs ("])\n\n", out);
+}
+
+
+/*-------------------------------------.
+| Output the symbol printers to OOUT. |
+`-------------------------------------*/
+
+static void
+symbol_printers_output (FILE *out)
+{
+ int i;
+ int first = 1;
+
+ fputs ("m4_define([b4_symbol_printers], \n[", out);
+ for (i = 0; i < nsyms; ++i)
+ if (symbols[i]->destructor)
+ {
+ symbol_t *symbol = symbols[i];
+
+ /* Filename, lineno,
+ Symbol-name, Symbol-number,
+ destructor, typename. */
+ fprintf (out, "%s[[[%s]], [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]",
+ first ? "" : ",\n",
+ infile, symbol->printer_location.first_line,
+ symbol_tag_get (symbol),
+ symbol->number,
+ symbol->printer,
+ symbol->type_name);
+
+ first = 0;
+ }
+ fputs ("])\n\n", out);
}
yydefgoto[i - ntokens] = default_state;
}
- output_short_table (&format_obstack, yydefgoto,
- yydefgoto[0], 1, nsyms - ntokens);
- muscle_insert ("defgoto", obstack_finish (&format_obstack));
-
+ muscle_insert_short_table ("defgoto", yydefgoto,
+ yydefgoto[0], 1, nsyms - ntokens);
XFREE (state_count);
XFREE (yydefgoto);
}
output_base (void)
{
/* Output pact. */
- output_short_table (&format_obstack, base,
- base[0], 1, nstates);
- muscle_insert ("pact", obstack_finish (&format_obstack));
+ muscle_insert_short_table ("pact", base,
+ base[0], 1, nstates);
/* Output pgoto. */
- output_short_table (&format_obstack, base,
- base[nstates], nstates + 1, nvectors);
- muscle_insert ("pgoto", obstack_finish (&format_obstack));
-
+ muscle_insert_short_table ("pgoto", base,
+ base[nstates], nstates + 1, nvectors);
XFREE (base);
}
static void
output_table (void)
{
- output_short_table (&format_obstack, table,
- table[0], 1, high + 1);
- muscle_insert ("table", obstack_finish (&format_obstack));
+ muscle_insert_short_table ("table", table,
+ table[0], 1, high + 1);
XFREE (table);
}
static void
output_check (void)
{
- output_short_table (&format_obstack, check,
- check[0], 1, high + 1);
- muscle_insert ("check", obstack_finish (&format_obstack));
+ muscle_insert_short_table ("check", check,
+ check[0], 1, high + 1);
XFREE (check);
}
}
\f
+/*----------------------.
+| Run our backend, M4. |
+`----------------------*/
+
+static void
+m4_invoke (const char *definitions)
+{
+ /* Invoke m4 on the definition of the muscles, and the skeleton. */
+ const char *bison_pkgdatadir = getenv ("BISON_PKGDATADIR");
+ const char *m4 = getenv ("M4");
+ int pkg_data_len;
+ char *full_skeleton;
+
+ if (!m4)
+ m4 = M4;
+ if (!bison_pkgdatadir)
+ bison_pkgdatadir = PKGDATADIR;
+ pkg_data_len = strlen (bison_pkgdatadir);
+ full_skeleton = XMALLOC (char, pkg_data_len + strlen (skeleton) + 2);
+ if (bison_pkgdatadir[pkg_data_len-1] == '/')
+ sprintf (full_skeleton, "%s%s", bison_pkgdatadir, skeleton);
+ else
+ sprintf (full_skeleton, "%s/%s", bison_pkgdatadir, skeleton);
+ if (trace_flag)
+ fprintf (stderr,
+ "running: %s -I %s m4sugar/m4sugar.m4 %s %s\n",
+ m4, bison_pkgdatadir, definitions, full_skeleton);
+ skel_in = readpipe (m4,
+ "-I", bison_pkgdatadir,
+ "m4sugar/m4sugar.m4",
+ definitions,
+ full_skeleton,
+ NULL);
+ XFREE (full_skeleton);
+ if (!skel_in)
+ error (EXIT_FAILURE, errno, "cannot run m4");
+ skel_lex ();
+
+}
+
/*---------------------------.
| Call the skeleton parser. |
`---------------------------*/
fputs ("m4_changecom()\n", out);
fputs ("m4_init()\n", out);
- fputs ("m4_define([b4_actions], \n[[", out);
actions_output (out);
- fputs ("]])\n\n", out);
-
- fputs ("m4_define([b4_tokens], \n[", out);
token_definitions_output (out);
- fputs ("])\n\n", out);
+ symbol_destructors_output (out);
+ symbol_printers_output (out);
muscles_m4_output (out);
fputs ("m4_divert_push(0)dnl\n", out);
xfclose (out);
- /* Invoke m4 on the definition of the muscles, and the skeleton. */
- {
- const char *bison_pkgdatadir = getenv ("BISON_PKGDATADIR");
- const char *m4 = getenv ("M4");
- if (!m4)
- m4 = M4;
- if (!bison_pkgdatadir)
- bison_pkgdatadir = PKGDATADIR;
- if (trace_flag)
- fprintf (stderr,
- "running: %s -I %s m4sugar/m4sugar.m4 %s %s\n",
- m4, bison_pkgdatadir, tempfile, skeleton);
- skel_in = readpipe (m4,
- "-I", bison_pkgdatadir,
- "m4sugar/m4sugar.m4",
- tempfile,
- skeleton,
- NULL);
- if (!skel_in)
- error (EXIT_FAILURE, errno, "cannot run m4");
- skel_lex ();
-
- /* If `debugging', keep this file alive. */
- if (!trace_flag)
- unlink (tempfile);
- }
+ m4_invoke (tempfile);
+
+ /* If `debugging', keep this file alive. */
+ if (!trace_flag)
+ unlink (tempfile);
+
+ free (tempfile);
}
static void
/* Find the right skeleton file. */
if (!skeleton)
- skeleton = "bison.simple";
+ skeleton = "yacc.c";
/* Parse the skeleton file and output the needed parsers. */
muscle_insert ("skeleton", skeleton);
/* Process the selected skeleton file. */
output_skeleton ();
- obstack_free (&muscle_obstack, NULL);
obstack_free (&format_obstack, NULL);
- obstack_free (&action_obstack, NULL);
obstack_free (&pre_prologue_obstack, NULL);
obstack_free (&post_prologue_obstack, NULL);
}
projects / bison.git / blobdiff