/* Print information on generated parser, for bison,
- Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002, 2003, 2004
+ Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
-
+#include <config.h>
#include "system.h"
#include <bitset.h>
#include "symtab.h"
static bitset shift_set;
-static bitset look_ahead_set;
+static bitset lookahead_set;
#if 0
static void
for (/* Nothing */; *sp >= 0; ++sp)
fprintf (out, " %s", symbols[*sp]->tag);
- /* Display the look-ahead tokens? */
- if (report_flag & report_look_ahead_tokens)
- state_rule_look_ahead_tokens_print (s, &rules[r], out);
+ /* Display the lookahead tokens? */
+ if (report_flag & report_lookahead_tokens)
+ state_rule_lookahead_tokens_print (s, &rules[r], out);
fputc ('\n', out);
}
size_t width = 0;
int i;
- /* Compute the width of the look-ahead token column. */
+ /* Compute the width of the lookahead token column. */
for (i = 0; i < trans->num; i++)
if (!TRANSITION_IS_DISABLED (trans, i)
&& TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)
fputc ('\n', out);
width += 2;
- /* Report look-ahead tokens and shifts. */
+ /* Report lookahead tokens and shifts. */
for (i = 0; i < trans->num; i++)
if (!TRANSITION_IS_DISABLED (trans, i)
&& TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)
size_t width = 0;
int i;
- /* Compute the width of the look-ahead token column. */
+ /* Compute the width of the lookahead token column. */
for (i = 0; i < errp->num; ++i)
if (errp->symbols[i])
max_length (&width, errp->symbols[i]->tag);
fputc ('\n', out);
width += 2;
- /* Report look-ahead tokens and errors. */
+ /* Report lookahead tokens and errors. */
for (i = 0; i < errp->num; ++i)
if (errp->symbols[i])
{
int cmax = 0;
int i;
- /* No need for a look-ahead. */
+ /* No need for a lookahead. */
if (s->consistent)
return reds->rules[0];
- /* 1. Each reduction is possibly masked by the look-ahead tokens on which
+ /* 1. Each reduction is possibly masked by the lookahead tokens on which
we shift (S/R conflicts)... */
bitset_zero (shift_set);
{
}
}
- /* 2. Each reduction is possibly masked by the look-ahead tokens on which
+ /* 2. Each reduction is possibly masked by the lookahead tokens on which
we raise an error (due to %nonassoc). */
{
errs *errp = s->errs;
{
int count = 0;
- /* How many non-masked look-ahead tokens are there for this
+ /* How many non-masked lookahead tokens are there for this
reduction? */
- bitset_andn (look_ahead_set, reds->look_ahead_tokens[i], shift_set);
- count = bitset_count (look_ahead_set);
+ bitset_andn (lookahead_set, reds->lookahead_tokens[i], shift_set);
+ count = bitset_count (lookahead_set);
if (count > cmax)
{
/* 3. And finally, each reduction is possibly masked by previous
reductions (in R/R conflicts, we keep the first reductions).
*/
- bitset_or (shift_set, shift_set, reds->look_ahead_tokens[i]);
+ bitset_or (shift_set, shift_set, reds->lookahead_tokens[i]);
}
return default_rule;
}
-/*--------------------------------------------------------------------------.
-| Report a reduction of RULE on LOOK_AHEAD_TOKEN (which can be `default'). |
-| If not ENABLED, the rule is masked by a shift or a reduce (S/R and |
-| R/R conflicts). |
-`--------------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------.
+| Report a reduction of RULE on LOOKAHEAD_TOKEN (which can be `default'). |
+| If not ENABLED, the rule is masked by a shift or a reduce (S/R and |
+| R/R conflicts). |
+`-------------------------------------------------------------------------*/
static void
print_reduction (FILE *out, size_t width,
- const char *look_ahead_token,
+ const char *lookahead_token,
rule *r, bool enabled)
{
int j;
- fprintf (out, " %s", look_ahead_token);
- for (j = width - strlen (look_ahead_token); j > 0; --j)
+ fprintf (out, " %s", lookahead_token);
+ for (j = width - strlen (lookahead_token); j > 0; --j)
fputc (' ', out);
if (!enabled)
fputc ('[', out);
FOR_EACH_SHIFT (trans, i)
bitset_set (shift_set, TRANSITION_SYMBOL (trans, i));
- /* Compute the width of the look-ahead token column. */
+ /* Compute the width of the lookahead token column. */
if (default_rule)
width = strlen (_("$default"));
- if (reds->look_ahead_tokens)
+ if (reds->lookahead_tokens)
for (i = 0; i < ntokens; i++)
{
bool count = bitset_test (shift_set, i);
for (j = 0; j < reds->num; ++j)
- if (bitset_test (reds->look_ahead_tokens[j], i))
+ if (bitset_test (reds->lookahead_tokens[j], i))
{
if (! count)
{
fputc ('\n', out);
width += 2;
- /* Report look-ahead tokens (or $default) and reductions. */
- if (reds->look_ahead_tokens)
+ /* Report lookahead tokens (or $default) and reductions. */
+ if (reds->lookahead_tokens)
for (i = 0; i < ntokens; i++)
{
bool defaulted = false;
bool count = bitset_test (shift_set, i);
for (j = 0; j < reds->num; ++j)
- if (bitset_test (reds->look_ahead_tokens[j], i))
+ if (bitset_test (reds->lookahead_tokens[j], i))
{
if (! count)
{
new_closure (nritems);
/* Storage for print_reductions. */
shift_set = bitset_create (ntokens, BITSET_FIXED);
- look_ahead_set = bitset_create (ntokens, BITSET_FIXED);
+ lookahead_set = bitset_create (ntokens, BITSET_FIXED);
for (i = 0; i < nstates; i++)
print_state (out, states[i]);
bitset_free (shift_set);
- bitset_free (look_ahead_set);
+ bitset_free (lookahead_set);
if (report_flag & report_itemsets)
free_closure ();
projects / bison.git / blobdiff