negative short int. Used to flag ?? */
#include "system.h"
+#include "bitsetv.h"
#include "quotearg.h"
#include "error.h"
#include "getargs.h"
static short *order = NULL;
static short *base = NULL;
static short *pos = NULL;
+
+/* TABLE_SIZE is the allocated size of both TABLE and CHECK.
+ We start with the original hard-coded value: SHRT_MAX
+ (yes, not USHRT_MAX). */
+static size_t table_size = SHRT_MAX;
static short *table = NULL;
static short *check = NULL;
static int lowzero;
int error_verbose = 0;
-/* Returns the number of lines of S. */
-size_t
-get_lines_number (const char *s)
-{
- size_t lines = 0;
- size_t i;
- for (i = 0; s[i]; ++i)
- if (s[i] == '\n')
- ++lines;
+/*----------------------------------------------------------------.
+| If TABLE (and CHECK) appear to be small to be addressed at |
+| DESIRED, grow them. Note that TABLE[DESIRED] is to be used, so |
+| the desired size is at least DESIRED + 1. |
+`----------------------------------------------------------------*/
- return lines;
-}
+static void
+table_grow (size_t desired)
+{
+ size_t old_size = table_size;
+ while (table_size <= desired)
+ table_size *= 2;
-/* FIXME. */
+ if (trace_flag)
+ fprintf (stderr, "growing table and check from: %d to %d\n",
+ old_size, table_size);
-static inline void
-output_table_data (struct obstack *oout,
- short *table_data,
- short first,
- int begin,
- int end)
-{
- int i;
- int j = 1;
+ table = XREALLOC (table, short, table_size);
+ check = XREALLOC (check, short, table_size);
- obstack_fgrow1 (oout, "%6d", first);
- for (i = begin; i < end; ++i)
+ for (/* Nothing. */; old_size < table_size; ++old_size)
{
- obstack_1grow (oout, ',');
- if (j >= 10)
- {
- obstack_sgrow (oout, "\n ");
- j = 1;
- }
- else
- ++j;
- obstack_fgrow1 (oout, "%6d", table_data[i]);
+ table[old_size] = 0;
+ check[old_size] = -1;
}
- obstack_1grow (oout, 0);
}
-static void
-output_token_translations (void)
-{
- output_table_data (&format_obstack, token_translations,
- 0, 1, max_user_token_number + 1);
- muscle_insert ("translate", obstack_finish (&format_obstack));
- XFREE (token_translations);
+/*------------------------------------------------------------------.
+| 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. |
+`------------------------------------------------------------------*/
+
+
+#define GENERATE_OUTPUT_TABLE(Name, Type) \
+ \
+static inline long int \
+Name (struct obstack *oout, \
+ Type *table_data, \
+ Type first, \
+ int begin, \
+ int end) \
+{ \
+ long int max = first; \
+ int i; \
+ int j = 1; \
+ \
+ obstack_fgrow1 (oout, "%6d", first); \
+ for (i = begin; i < end; ++i) \
+ { \
+ obstack_1grow (oout, ','); \
+ if (j >= 10) \
+ { \
+ obstack_sgrow (oout, "\n "); \
+ j = 1; \
+ } \
+ else \
+ ++j; \
+ obstack_fgrow1 (oout, "%6d", table_data[i]); \
+ if (table_data[i] > max) \
+ max = table_data[i]; \
+ } \
+ obstack_1grow (oout, 0); \
+ \
+ return 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)
+
+
+/*-----------------------------------------------------------------.
+| Prepare the muscles related to the tokens: translate, tname, and |
+| toknum. |
+`-----------------------------------------------------------------*/
static void
-output_gram (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);
+
{
int i;
- short *values = XCALLOC (short, nrules + 1);
- for (i = 0; i < nrules + 1; ++i)
- values[i] = rules[i].rhs;
- output_table_data (&format_obstack, values,
- 0, 1, nrules + 1);
- XFREE (values);
- }
+ int j = 0;
+ for (i = 0; i < nsyms; i++)
+ {
+ /* Be sure not to use twice the same quotearg slot. */
+ const char *cp =
+ quotearg_n_style (1, c_quoting_style,
+ quotearg_style (escape_quoting_style,
+ symbols[i]->tag));
+ /* Width of the next token, including the two quotes, the coma
+ and the space. */
+ int strsize = strlen (cp) + 2;
+
+ if (j + strsize > 75)
+ {
+ obstack_sgrow (&format_obstack, "\n ");
+ j = 2;
+ }
+
+ obstack_sgrow (&format_obstack, cp);
+ obstack_sgrow (&format_obstack, ", ");
+ j += strsize;
+ }
+ /* Add a NULL entry to list of tokens (well, 0, as NULL might not be
+ defined). */
+ obstack_sgrow (&format_obstack, "0");
- muscle_insert ("prhs", obstack_finish (&format_obstack));
+ /* Finish table and store. */
+ obstack_1grow (&format_obstack, 0);
+ muscle_insert ("tname", obstack_finish (&format_obstack));
+ }
+ /* Output YYTOKNUM. */
{
- short *yyrhs;
int i;
-
- yyrhs = XMALLOC (short, nritems);
-
- for (i = 1; i < nritems; ++i)
- yyrhs[i] = ritem[i] >= 0 ? ritem[i] : -1;
-
- output_table_data (&format_obstack, yyrhs,
- ritem[0], 1, nritems);
- muscle_insert ("rhs", obstack_finish (&format_obstack));
-
- XFREE (yyrhs);
+ 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));
+ free (values);
}
-
-#if 0
- if (!semantic_parser)
- obstack_sgrow (&table_obstack, "\n#endif\n");
-#endif
}
-static void
-output_stos (void)
-{
- size_t i;
- short *values = (short *) alloca (sizeof (short) * nstates);
- for (i = 0; i < nstates; ++i)
- values[i] = states[i]->accessing_symbol;
- output_table_data (&format_obstack, values,
- 0, 1, nstates);
- muscle_insert ("stos", obstack_finish (&format_obstack));
-}
-
+/*-------------------------------------------------------------.
+| Prepare the muscles related to the rules: rhs, prhs, r1, r2, |
+| rline. |
+`-------------------------------------------------------------*/
static void
-output_rule_data (void)
+prepare_rules (void)
{
- int i;
- int j;
- short *short_tab = NULL;
-
- {
- short *values = XCALLOC (short, nrules + 1);
- for (i = 0; i < nrules + 1; ++i)
- values[i] = rules[i].line;
- output_table_data (&format_obstack, values,
- 0, 1, nrules + 1);
- muscle_insert ("rline", obstack_finish (&format_obstack));
- XFREE (values);
- }
-
-
- j = 0;
- for (i = 0; i < nsyms; i++)
+ long int max;
+ item_number_t *rhsp;
+ int r;
+ 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);
+
+ for (r = 1; r < nrules + 1; ++r)
{
- /* Be sure not to use twice the same quotearg slot. */
- const char *cp =
- quotearg_n_style (1, c_quoting_style,
- quotearg_style (escape_quoting_style, symbols[i]->tag));
- /* Width of the next token, including the two quotes, the coma
- and the space. */
- int strsize = strlen (cp) + 2;
-
- if (j + strsize > 75)
- {
- obstack_sgrow (&format_obstack, "\n ");
- j = 2;
- }
-
- obstack_sgrow (&format_obstack, cp);
- obstack_sgrow (&format_obstack, ", ");
- j += strsize;
+ /* Index of rule R in RHS. */
+ prhs[r] = i;
+ /* RHS of the rule R. */
+ for (rhsp = rules[r].rhs; *rhsp >= 0; ++rhsp)
+ rhs[i++] = *rhsp;
+ /* LHS of the rule R. */
+ r1[r] = rules[r].lhs->number;
+ /* Length of rule R's RHS. */
+ r2[r] = i - prhs[r];
+ /* Separator in RHS. */
+ rhs[i++] = -1;
+ /* Line where rule was defined. */
+ rline[r] = rules[r].line;
}
- /* Add a NULL entry to list of tokens (well, 0, as NULL might not be
- defined). */
- obstack_sgrow (&format_obstack, "0");
+ assert (i == nritems);
- /* Finish table and store. */
- obstack_1grow (&format_obstack, 0);
- muscle_insert ("tname", obstack_finish (&format_obstack));
+ 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 YYTOKNUM. */
- {
- short *values = XCALLOC (short, ntokens + 1);
- for (i = 0; i < ntokens + 1; ++i)
- values[i] = symbols[i]->user_token_number;
- output_table_data (&format_obstack, values,
- 0, 1, ntokens + 1);
- muscle_insert ("toknum", obstack_finish (&format_obstack));
- XFREE (values);
- }
+ 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 YYR1. */
- {
- short *values = XCALLOC (short, nrules + 1);
- for (i = 0; i < nrules + 1; ++i)
- values[i] = rules[i].lhs;
- output_table_data (&format_obstack, values,
- 0, 1, nrules + 1);
- muscle_insert ("r1", obstack_finish (&format_obstack));
- XFREE (values);
- }
+ output_token_number_table (&format_obstack, r1, 0, 1, nrules + 1);
+ muscle_insert ("r1", obstack_finish (&format_obstack));
- /* Output YYR2. */
- short_tab = XMALLOC (short, nrules + 1);
- for (i = 1; i < nrules; i++)
- short_tab[i] = rules[i + 1].rhs - rules[i].rhs - 1;
- short_tab[nrules] = nritems - rules[nrules].rhs - 1;
- output_table_data (&format_obstack, short_tab,
- 0, 1, nrules + 1);
+ output_short_table (&format_obstack, r2, 0, 1, nrules + 1);
muscle_insert ("r2", obstack_finish (&format_obstack));
- XFREE (short_tab);
+
+ free (rhs);
+ free (prhs);
+ free (r2);
+}
+
+/*--------------------------------------------.
+| Prepare the muscles related to the states. |
+`--------------------------------------------*/
+
+static void
+prepare_states (void)
+{
+ size_t i;
+ token_number_t *values =
+ (token_number_t *) alloca (sizeof (token_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));
}
+
/*------------------------------------------------------------------.
| Decide what to do for each type of token if seen as the lookahead |
| token in specified state. The value returned is used as the |
| default action (yydefact) for the state. In addition, actrow is |
| filled with what to do for each kind of token, index by symbol |
| number, with zero meaning do the default action. The value |
-| MINSHORT, a very negative number, means this situation is an |
+| SHRT_MIN, a very negative number, means this situation is an |
| error. The parser recognizes this value specially. |
| |
| This is where conflicts are resolved. The loop over lookahead |
/* and record this rule as the rule to use if that
token follows. */
if (bitset_test (LA[state->lookaheadsp + i], j))
- actrow[j] = -LAruleno[state->lookaheadsp + i];
+ actrow[j] = -LArule[state->lookaheadsp + i]->number;
}
/* Now see which tokens are allowed for shifts in this state. For
to reduce. */
for (i = 0; i < shiftp->nshifts; i++)
{
- int symbol;
+ token_number_t symbol;
int shift_state = shiftp->shifts[i];
if (!shift_state)
continue;
/* Do not use any default reduction if there is a shift for
error */
- if (symbol == error_token_number)
+ if (symbol == errtoken->number)
nodefault = 1;
}
/* See which tokens are an explicit error in this state (due to
- %nonassoc). For them, record MINSHORT as the action. */
+ %nonassoc). For them, record SHRT_MIN as the action. */
for (i = 0; i < errp->nerrs; i++)
{
int symbol = errp->errs[i];
- actrow[symbol] = MINSHORT;
+ actrow[symbol] = SHRT_MIN;
}
/* Now find the most common reduction and make it the default action
for (i = 0; i < state->nlookaheads; i++)
{
int count = 0;
- int rule = -LAruleno[state->lookaheadsp + i];
+ int rule = -LArule[state->lookaheadsp + i]->number;
int j;
for (j = 0; j < ntokens; j++)
if (default_rule == 0)
for (i = 0; i < ntokens; i++)
- if (actrow[i] == MINSHORT)
+ if (actrow[i] == SHRT_MIN)
actrow[i] = 0;
return default_rule;
save_row (i);
}
- output_table_data (&format_obstack, yydefact,
+ output_short_table (&format_obstack, yydefact,
yydefact[0], 1, nstates);
muscle_insert ("defact", obstack_finish (&format_obstack));
}
-/*----------------------------.
-| Output the guards to OOUT. |
-`----------------------------*/
-
-void
-guards_output (FILE *out)
-{
- int rule;
- for (rule = 1; rule < nrules + 1; ++rule)
- if (rules[rule].guard)
- {
- fprintf (out, " case %d:\n", rule);
-
- if (!no_lines_flag)
- fprintf (out, muscle_find ("linef"),
- rules[rule].guard_line,
- quotearg_style (c_quoting_style,
- muscle_find ("filename")));
- fprintf (out, "{ %s; }\n break;\n\n",
- rules[rule].guard);
- }
-}
-
-
/*---------------------------------------.
| Output the tokens definition to OOUT. |
`---------------------------------------*/
token_definitions_output (FILE *out)
{
int i;
+ int first = 1;
for (i = 0; i < ntokens; ++i)
{
- bucket *symbol = symbols[i];
+ symbol_t *symbol = symbols[i];
int number = symbol->user_token_number;
if (number == SALIAS)
continue;
/* Skip error token. */
- if (symbol->value == error_token_number)
+ if (symbol == errtoken)
continue;
if (symbol->tag[0] == '\'')
continue; /* skip literal character */
if (strchr (symbol->tag, '.') || strchr (symbol->tag, '$'))
continue;
- fprintf (out, "# define %s\t%d\n",
- symbol->tag, number);
- 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);
+ fprintf (out, "%s[[[%s]], [%d]]",
+ first ? "" : ",\n", symbol->tag, number);
+ first = 0;
}
}
yydefgoto[i - ntokens] = default_state;
}
- output_table_data (&format_obstack, yydefgoto,
+ output_short_table (&format_obstack, yydefgoto,
yydefgoto[0], 1, nsyms - ntokens);
muscle_insert ("defgoto", obstack_finish (&format_obstack));
assert (t);
- for (j = lowzero - from[0]; j < MAXTABLE; j++)
+ for (j = lowzero - from[0]; j < (int) table_size; j++)
{
int k;
int ok = 1;
for (k = 0; ok && k < t; k++)
{
loc = j + from[k];
- if (loc > MAXTABLE)
- fatal (_("maximum table size (%d) exceeded"), MAXTABLE);
+ if (loc > (int) table_size)
+ table_grow (loc);
if (table[loc] != 0)
ok = 0;
base = XCALLOC (short, nvectors);
pos = XCALLOC (short, nentries);
- table = XCALLOC (short, MAXTABLE);
- check = XCALLOC (short, MAXTABLE);
+ table = XCALLOC (short, table_size);
+ check = XCALLOC (short, table_size);
lowzero = 0;
high = 0;
for (i = 0; i < nvectors; i++)
- base[i] = MINSHORT;
+ base[i] = SHRT_MIN;
- for (i = 0; i < MAXTABLE; i++)
+ for (i = 0; i < (int) table_size; i++)
check[i] = -1;
for (i = 0; i < nentries; i++)
output_base (void)
{
/* Output pact. */
- output_table_data (&format_obstack, base,
+ output_short_table (&format_obstack, base,
base[0], 1, nstates);
muscle_insert ("pact", obstack_finish (&format_obstack));
/* Output pgoto. */
- output_table_data (&format_obstack, base,
+ output_short_table (&format_obstack, base,
base[nstates], nstates + 1, nvectors);
muscle_insert ("pgoto", obstack_finish (&format_obstack));
static void
output_table (void)
{
- output_table_data (&format_obstack, table,
+ output_short_table (&format_obstack, table,
table[0], 1, high + 1);
muscle_insert ("table", obstack_finish (&format_obstack));
XFREE (table);
static void
output_check (void)
{
- output_table_data (&format_obstack, check,
+ output_short_table (&format_obstack, check,
check[0], 1, high + 1);
muscle_insert ("check", obstack_finish (&format_obstack));
XFREE (check);
}
-/* compute and output yydefact, yydefgoto, yypact, yypgoto, yytable
- and yycheck. */
+/*-----------------------------------------------------------------.
+| Compute and output yydefact, yydefgoto, yypact, yypgoto, yytable |
+| and yycheck. |
+`-----------------------------------------------------------------*/
static void
output_actions (void)
width = XCALLOC (short, nvectors);
token_actions ();
- XFREE (LA);
- XFREE (LAruleno);
+ bitsetv_free (LA);
+ free (LArule);
goto_actions ();
XFREE (goto_map + ntokens);
output_skeleton (void)
{
/* Store the definition of all the muscles. */
- char *tempdir = getenv ("TMPDIR");
+ const char *tempdir = getenv ("TMPDIR");
char *tempfile = NULL;
FILE *out = NULL;
- ssize_t bytes_read;
int fd;
if (tempdir == NULL)
actions_output (out);
fputs ("]])\n\n", out);
- fputs ("m4_define([b4_guards], \n[[", out);
- guards_output (out);
- fputs ("]])\n\n", out);
-
- fputs ("m4_define([b4_tokendef], \n[[", out);
+ fputs ("m4_define([b4_tokens], \n[", out);
token_definitions_output (out);
- fputs ("]])\n\n", out);
+ fputs ("])\n\n", out);
muscles_m4_output (out);
prepare (void)
{
MUSCLE_INSERT_INT ("last", high);
- MUSCLE_INSERT_INT ("flag", MINSHORT);
+ MUSCLE_INSERT_INT ("flag", SHRT_MIN);
MUSCLE_INSERT_INT ("pure", pure_parser);
MUSCLE_INSERT_INT ("nsym", nsyms);
MUSCLE_INSERT_INT ("debug", debug_flag);
MUSCLE_INSERT_INT ("final", final_state);
- MUSCLE_INSERT_INT ("maxtok", max_user_token_number);
+ MUSCLE_INSERT_INT ("undef_token_number", undeftoken->number);
+ MUSCLE_INSERT_INT ("user_token_number_max", max_user_token_number);
MUSCLE_INSERT_INT ("error_verbose", error_verbose);
MUSCLE_INSERT_STRING ("prefix", spec_name_prefix ? spec_name_prefix : "yy");
MUSCLE_INSERT_INT ("defines_flag", defines_flag);
/* Copy definitions in directive. */
- obstack_1grow (&attrs_obstack, 0);
- muscle_insert ("prologue", obstack_finish (&attrs_obstack));
+ obstack_1grow (&pre_prologue_obstack, 0);
+ obstack_1grow (&post_prologue_obstack, 0);
+ muscle_insert ("pre_prologue", obstack_finish (&pre_prologue_obstack));
+ muscle_insert ("post_prologue", obstack_finish (&post_prologue_obstack));
/* Find the right skeleton file. */
if (!skeleton)
- {
- if (semantic_parser)
- skeleton = "bison.hairy";
- else
- skeleton = "bison.simple";
- }
+ skeleton = "bison.simple";
/* Parse the skeleton file and output the needed parsers. */
muscle_insert ("skeleton", skeleton);
{
obstack_init (&format_obstack);
- output_token_translations ();
- output_gram ();
-
- if (semantic_parser)
- output_stos ();
- output_rule_data ();
+ prepare_tokens ();
+ prepare_rules ();
+ prepare_states ();
output_actions ();
prepare ();
obstack_free (&muscle_obstack, NULL);
obstack_free (&format_obstack, NULL);
obstack_free (&action_obstack, NULL);
- obstack_free (&attrs_obstack, NULL);
+ obstack_free (&pre_prologue_obstack, NULL);
+ obstack_free (&post_prologue_obstack, NULL);
}
projects / bison.git / blobdiff