/* Print information on generated parser, for bison,
- Copyright 1984, 1986, 1989, 2000, 2001 Free Software Foundation, Inc.
+ Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002
+ Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
#include "print.h"
#include "reduce.h"
#include "closure.h"
+#include "bitset.h"
-static unsigned *shiftset = NULL;
-static unsigned *lookaheadset = NULL;
+static bitset shiftset;
+static bitset lookaheadset;
#if 0
static void
print_core (FILE *out, state_t *state)
{
int i;
- short *sitems = state->items;
- int snitems = state->nitems;
+ item_number_t *sitems = state->items;
+ int snritems = state->nitems;
- /* New experimental feature: if TRACE_FLAGS output all the items of
- a state, not only its kernel. */
- if (trace_flag)
+ /* Output all the items of a state, not only its kernel. */
+ if (report_flag & report_itemsets)
{
- closure (sitems, snitems);
+ closure (sitems, snritems);
sitems = itemset;
- snitems = nitemset;
+ snritems = nritemset;
}
- if (snitems)
+ if (snritems)
{
- for (i = 0; i < snitems; i++)
+ for (i = 0; i < snritems; i++)
{
- short *sp;
- short *sp1;
+ item_number_t *sp;
+ item_number_t *sp1;
int rule;
sp1 = sp = ritem + sitems[i];
sp++;
rule = -(*sp);
- fprintf (out, " %s -> ", escape (symbols[rules[rule].lhs]->tag));
+ fprintf (out, " %s -> ", escape (rules[rule].lhs->tag));
- for (sp = ritem + rules[rule].rhs; sp < sp1; sp++)
+ for (sp = rules[rule].rhs; sp < sp1; sp++)
fprintf (out, "%s ", escape (symbols[*sp]->tag));
fputc ('.', out);
for (/* Nothing */; *sp >= 0; ++sp)
fprintf (out, " %s", escape (symbols[*sp]->tag));
+ /* Display the lookaheads? */
+ if (report_flag & report_lookaheads)
+ {
+ int j, k;
+ int nlookaheads = 0;
+ /* Look for lookaheads corresponding to this rule. */
+ for (j = 0; j < state->nlookaheads; ++j)
+ for (k = 0; k < ntokens; ++k)
+ if (bitset_test (LA[state->lookaheadsp + j], k)
+ && LArule[state->lookaheadsp + j]->number == rule)
+ nlookaheads++;
+ if (nlookaheads)
+ {
+ fprintf (out, " [");
+ for (j = 0; j < state->nlookaheads; ++j)
+ for (k = 0; k < ntokens; ++k)
+ if (bitset_test (LA[state->lookaheadsp + j], k)
+ && LArule[state->lookaheadsp + j]->number == rule)
+ fprintf (out, "%s%s",
+ quotearg_style (escape_quoting_style,
+ symbols[k]->tag),
+ --nlookaheads ? ", " : "");
+ fprintf (out, "]");
+ }
+ }
+
fprintf (out, _(" (rule %d)"), rule - 1);
fputc ('\n', out);
}
if (!SHIFT_IS_DISABLED (shiftp, i))
{
int state1 = shiftp->shifts[i];
- int symbol = states[state1]->accessing_symbol;
+ symbol_number_t symbol = states[state1]->accessing_symbol;
fprintf (out,
_(" %-4s\tshift, and go to state %d\n"),
escape (symbols[symbol]->tag), state1);
if (!SHIFT_IS_DISABLED (shiftp, i))
{
int state1 = shiftp->shifts[i];
- int symbol = states[state1]->accessing_symbol;
+ symbol_number_t symbol = states[state1]->accessing_symbol;
fprintf (out, _(" %-4s\tgo to state %d\n"),
escape (symbols[symbol]->tag), state1);
}
if (state->consistent)
{
int rule = redp->rules[0];
- int symbol = rules[rule].lhs;
+ symbol_number_t symbol = rules[rule].lhs->number;
fprintf (out, _(" $default\treduce using rule %d (%s)\n\n"),
rule - 1, escape (symbols[symbol]->tag));
return;
}
- for (i = 0; i < tokensetsize; i++)
- shiftset[i] = 0;
+ bitset_zero (shiftset);
for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
if (!SHIFT_IS_DISABLED (shiftp, i))
default rule. */
if (SHIFT_IS_ERROR (shiftp, i))
nodefault = 1;
- SETBIT (shiftset, SHIFT_SYMBOL (shiftp, i));
+ bitset_set (shiftset, SHIFT_SYMBOL (shiftp, i));
}
for (i = 0; i < errp->nerrs; i++)
if (errp->errs[i])
- SETBIT (shiftset, errp->errs[i]);
+ bitset_set (shiftset, errp->errs[i]);
if (state->nlookaheads == 1 && !nodefault)
{
- int k;
- int default_rule = LAruleno[state->lookaheadsp];
+ rule_t *default_rule = LArule[state->lookaheadsp];
- for (k = 0; k < tokensetsize; ++k)
- lookaheadset[k] = LA (state->lookaheadsp)[k] & shiftset[k];
+ bitset_and (lookaheadset, LA[state->lookaheadsp], shiftset);
for (i = 0; i < ntokens; i++)
- if (BITISSET (lookaheadset, i))
+ if (bitset_test (lookaheadset, i))
fprintf (out, _(" %-4s\t[reduce using rule %d (%s)]\n"),
- escape (symbols[i]->tag), default_rule - 1,
- escape2 (symbols[rules[default_rule].lhs]->tag));
+ escape (symbols[i]->tag),
+ default_rule->number - 1,
+ escape2 (default_rule->lhs->tag));
fprintf (out, _(" $default\treduce using rule %d (%s)\n\n"),
- default_rule - 1, escape (symbols[rules[default_rule].lhs]->tag));
+ default_rule->number - 1,
+ escape (default_rule->lhs->tag));
}
else if (state->nlookaheads >= 1)
{
int cmax = 0;
int default_LA = -1;
- int default_rule = 0;
+ rule_t *default_rule = NULL;
if (!nodefault)
for (i = 0; i < state->nlookaheads; ++i)
{
int count = 0;
- int j, k;
+ int j;
- for (k = 0; k < tokensetsize; ++k)
- lookaheadset[k] = LA (state->lookaheadsp + i)[k] & ~shiftset[k];
+ bitset_andn (lookaheadset, LA[state->lookaheadsp + i], shiftset);
for (j = 0; j < ntokens; j++)
- if (BITISSET (lookaheadset, j))
+ if (bitset_test (lookaheadset, j))
count++;
if (count > cmax)
{
cmax = count;
default_LA = state->lookaheadsp + i;
- default_rule = LAruleno[state->lookaheadsp + i];
+ default_rule = LArule[state->lookaheadsp + i];
}
- for (k = 0; k < tokensetsize; ++k)
- shiftset[k] |= lookaheadset[k];
+ bitset_or (shiftset, shiftset, lookaheadset);
}
- for (i = 0; i < tokensetsize; i++)
- shiftset[i] = 0;
+ bitset_zero (shiftset);
for (i = 0; i < shiftp->nshifts && SHIFT_IS_SHIFT (shiftp, i); i++)
if (!SHIFT_IS_DISABLED (shiftp, i))
- SETBIT (shiftset, SHIFT_SYMBOL (shiftp, i));
+ bitset_set (shiftset, SHIFT_SYMBOL (shiftp, i));
for (i = 0; i < ntokens; i++)
{
int j;
int defaulted = 0;
- int count = BITISSET (shiftset, i);
+ int count = bitset_test (shiftset, i);
for (j = 0; j < state->nlookaheads; ++j)
- {
- if (BITISSET (LA (state->lookaheadsp + j), i))
- {
- if (count == 0)
- {
- if (state->lookaheadsp + j != default_LA)
- fprintf (out,
- _(" %-4s\treduce using rule %d (%s)\n"),
- escape (symbols[i]->tag),
- LAruleno[state->lookaheadsp + j] - 1,
- escape2 (symbols[rules[LAruleno[state->lookaheadsp + j]].lhs]->tag));
- else
- defaulted = 1;
-
- count++;
- }
- else
- {
- if (defaulted)
- fprintf (out,
- _(" %-4s\treduce using rule %d (%s)\n"),
- escape (symbols[i]->tag),
- LAruleno[default_LA] - 1,
- escape2 (symbols[rules[LAruleno[default_LA]].lhs]->tag));
- defaulted = 0;
+ if (bitset_test (LA[state->lookaheadsp + j], i))
+ {
+ if (count == 0)
+ {
+ if (state->lookaheadsp + j != default_LA)
fprintf (out,
- _(" %-4s\t[reduce using rule %d (%s)]\n"),
+ _(" %-4s\treduce using rule %d (%s)\n"),
escape (symbols[i]->tag),
- LAruleno[state->lookaheadsp + j] - 1,
- escape2 (symbols[rules[LAruleno[state->lookaheadsp + j]].lhs]->tag));
- }
- }
- }
+ LArule[state->lookaheadsp + j]->number - 1,
+ escape2 (LArule[state->lookaheadsp + j]->lhs->tag));
+ else
+ defaulted = 1;
+
+ count++;
+ }
+ else
+ {
+ if (defaulted)
+ fprintf (out,
+ _(" %-4s\treduce using rule %d (%s)\n"),
+ escape (symbols[i]->tag),
+ LArule[default_LA]->number - 1,
+ escape2 (LArule[default_LA]->lhs->tag));
+ defaulted = 0;
+ fprintf (out,
+ _(" %-4s\t[reduce using rule %d (%s)]\n"),
+ escape (symbols[i]->tag),
+ LArule[state->lookaheadsp + j]->number - 1,
+ escape2 (LArule[state->lookaheadsp + j]->lhs->tag));
+ }
+ }
}
if (default_LA >= 0)
fprintf (out, _(" $default\treduce using rule %d (%s)\n"),
- default_rule - 1,
- escape (symbols[rules[default_rule].lhs]->tag));
+ default_rule->number - 1,
+ escape (default_rule->lhs->tag));
}
}
fputs ("\n\n", out);
print_core (out, state);
print_actions (out, state);
+ if ((report_flag & report_solved_conflicts)
+ && state->solved_conflicts)
+ fputs (state->solved_conflicts, out);
fputs ("\n\n", out);
}
\f
static void
print_grammar (FILE *out)
{
- int i, j;
- short *rule;
+ symbol_number_t i;
+ int j;
+ item_number_t *rule;
char buffer[90];
int column = 0;
/* rule # : LHS -> RHS */
fprintf (out, "%s\n\n", _("Grammar"));
fprintf (out, " %s\n", _("Number, Line, Rule"));
- for (i = 1; i <= nrules; i++)
- /* Don't print rules disabled in reduce_grammar_tables. */
- if (rules[i].useful)
- {
- fprintf (out, _(" %3d %3d %s ->"),
- i - 1, rules[i].line, escape (symbols[rules[i].lhs]->tag));
- rule = &ritem[rules[i].rhs];
- if (*rule >= 0)
- while (*rule >= 0)
- fprintf (out, " %s", escape (symbols[*rule++]->tag));
- else
- fprintf (out, " /* %s */", _("empty"));
- fputc ('\n', out);
- }
+ for (j = 1; j < nrules + 1; j++)
+ {
+ fprintf (out, _(" %3d %3d %s ->"),
+ j - 1, rules[j].line, escape (rules[j].lhs->tag));
+ rule = rules[j].rhs;
+ if (*rule >= 0)
+ while (*rule >= 0)
+ fprintf (out, " %s", escape (symbols[*rule++]->tag));
+ else
+ fprintf (out, " /* %s */", _("empty"));
+ fputc ('\n', out);
+ }
fputs ("\n\n", out);
/* TERMINAL (type #) : rule #s terminal is on RHS */
fprintf (out, "%s\n\n", _("Terminals, with rules where they appear"));
- for (i = 0; i <= max_user_token_number; i++)
- if (token_translations[i] != 2)
+ for (i = 0; i < max_user_token_number + 1; i++)
+ if (token_translations[i] != undeftoken->number)
{
buffer[0] = 0;
column = strlen (escape (symbols[token_translations[i]]->tag));
END_TEST (50);
sprintf (buffer, " (%d)", i);
- for (j = 1; j <= nrules; j++)
- for (rule = &ritem[rules[j].rhs]; *rule >= 0; rule++)
- if (*rule == token_translations[i])
+ for (j = 1; j < nrules + 1; j++)
+ for (rule = rules[j].rhs; *rule >= 0; rule++)
+ if (item_number_as_symbol_number (*rule) == token_translations[i])
{
END_TEST (65);
sprintf (buffer + strlen (buffer), " %d", j - 1);
fprintf (out, "%s\n\n", _("Nonterminals, with rules where they appear"));
- for (i = ntokens; i <= nsyms - 1; i++)
+ for (i = ntokens; i < nsyms; i++)
{
int left_count = 0, right_count = 0;
- for (j = 1; j <= nrules; j++)
+ for (j = 1; j < nrules + 1; j++)
{
- if (rules[j].lhs == i)
+ if (rules[j].lhs->number == i)
left_count++;
- for (rule = &ritem[rules[j].rhs]; *rule >= 0; rule++)
- if (*rule == i)
+ for (rule = rules[j].rhs; *rule >= 0; rule++)
+ if (item_number_as_symbol_number (*rule) == i)
{
right_count++;
break;
END_TEST (50);
sprintf (buffer + strlen (buffer), _(" on left:"));
- for (j = 1; j <= nrules; j++)
+ for (j = 1; j < nrules + 1; j++)
{
END_TEST (65);
- if (rules[j].lhs == i)
+ if (rules[j].lhs->number == i)
sprintf (buffer + strlen (buffer), " %d", j - 1);
}
}
sprintf (buffer + strlen (buffer), ",");
END_TEST (50);
sprintf (buffer + strlen (buffer), _(" on right:"));
- for (j = 1; j <= nrules; j++)
+ for (j = 1; j < nrules + 1; j++)
{
- for (rule = &ritem[rules[j].rhs]; *rule >= 0; rule++)
- if (*rule == i)
+ for (rule = rules[j].rhs; *rule >= 0; rule++)
+ if (item_number_as_symbol_number (*rule) == i)
{
END_TEST (65);
sprintf (buffer + strlen (buffer), " %d", j - 1);
void
print_results (void)
{
- int i;
+ size_t i;
/* We used to use just .out if SPEC_NAME_PREFIX (-p) was used, but
that conflicts with Posix. */
print_grammar (out);
- /* New experimental feature: output all the items of a state, not
- only its kernel. Requires to run closure, which need memory
- allocation/deallocation. */
- if (trace_flag)
+ /* If the whole state item sets, not only the kernels, are wanted,
+ `closure' will be run, which needs memory allocation/deallocation. */
+ if (report_flag & report_itemsets)
new_closure (nritems);
/* Storage for print_reductions. */
- shiftset = XCALLOC (unsigned, tokensetsize);
- lookaheadset = XCALLOC (unsigned, tokensetsize);
+ shiftset = bitset_create (ntokens, BITSET_FIXED);
+ lookaheadset = bitset_create (ntokens, BITSET_FIXED);
for (i = 0; i < nstates; i++)
print_state (out, states[i]);
- free (shiftset);
- free (lookaheadset);
- if (trace_flag)
+ bitset_free (shiftset);
+ bitset_free (lookaheadset);
+ if (report_flag & report_itemsets)
free_closure ();
xfclose (out);
projects / bison.git / blobdiff