/* Output the generated parsing program for bison,
- Copyright (C) 1984, 1986, 1989, 1992, 2000 Free Software Foundation, Inc.
+ Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
*/
#include "system.h"
+#include "quotearg.h"
#include "getargs.h"
-#include "xalloc.h"
#include "files.h"
#include "gram.h"
#include "LR0.h"
#include "lalr.h"
#include "reader.h"
#include "conflicts.h"
-
-extern void berror PARAMS((const char *));
-
+#include "muscle_tab.h"
static int nvectors;
static int nentries;
-static short **froms;
-static short **tos;
-static short *tally;
-static short *width;
-static short *actrow;
-static short *state_count;
-static short *order;
-static short *base;
-static short *pos;
-static short *table;
-static short *check;
+static short **froms = NULL;
+static short **tos = NULL;
+static short *tally = NULL;
+static short *width = NULL;
+static short *actrow = NULL;
+static short *state_count = NULL;
+static short *order = NULL;
+static short *base = NULL;
+static short *pos = NULL;
+static short *table = NULL;
+static short *check = NULL;
static int lowzero;
static int high;
+struct obstack muscle_obstack;
+struct obstack output_obstack;
+int error_verbose = 0;
-static inline void
-output_short_table (FILE *out,
- const char *table_name,
- short *short_table,
- short first_value,
- short begin, short end)
+/* Returns the number of lines of S. */
+static size_t
+get_lines_number (const char *s)
{
- int i, j;
-
- fprintf (out, "static const short %s[] = {%6d", table_name, first_value);
-
- j = 10;
- for (i = begin; i < end; i++)
+ size_t lines = 0;
+
+ size_t i;
+ for (i = 0; s[i]; ++i)
{
- putc (',', out);
-
- if (j >= 10)
- {
- putc ('\n', out);
- j = 1;
- }
- else
- {
- j++;
- }
-
- fprintf (out, "%6d", short_table[i]);
- }
-
- fprintf (out, "\n};\n");
+ if (s[i] == '\n')
+ ++lines;
+ }
+
+ return lines;
}
-/*--------------------------------------------------------------.
-| output_headers -- Output constant strings to the beginning of |
-| certain files. |
-`--------------------------------------------------------------*/
-
-#define GUARDSTR \
-"\n\
-#include \"%s\"\n\
-extern int yyerror;\n\
-extern int yycost;\n\
-extern char * yymsg;\n\
-extern YYSTYPE yyval;\n\
-\n\
-yyguard(n, yyvsp, yylsp)\n\
-register int n;\n\
-register YYSTYPE *yyvsp;\n\
-register YYLTYPE *yylsp;\n\
-{\n\
- yyerror = 0;\n\
- yycost = 0;\n\
- yymsg = 0;\n\
- switch (n)\n\
- {"
-
-#define ACTSTR \
-"\n\
-#include \"%s\"\n\
-extern YYSTYPE yyval;\n\
-extern int yychar;\n\
-\n\
-yyaction(n, yyvsp, yylsp)\n\
-register int n;\n\
-register YYSTYPE *yyvsp;\n\
-register YYLTYPE *yylsp;\n\
-{\n\
- switch (n)\n\
- {"
-
-#define ACTSTR_SIMPLE "\n switch (yyn) {\n"
+/* FIXME. */
-void
-output_headers (void)
+static inline void
+output_table_data (struct obstack *oout,
+ short *table_data,
+ short first,
+ short begin,
+ short end)
{
- if (semantic_parser)
- fprintf (fguard, GUARDSTR, attrsfile);
-
- if (noparserflag)
- return;
-
- fprintf (faction, (semantic_parser ? ACTSTR : ACTSTR_SIMPLE), attrsfile);
-/* if (semantic_parser) JF moved this below
- fprintf(ftable, "#include \"%s\"\n", attrsfile);
- fprintf(ftable, "#include <stdio.h>\n\n");
-*/
+ int i;
+ int j = 1;
- /* Rename certain symbols if -p was specified. */
- if (spec_name_prefix)
+ obstack_fgrow1 (oout, "%6d", first);
+ for (i = begin; i < end; ++i)
{
- fprintf (ftable, "#define yyparse %sparse\n", spec_name_prefix);
- fprintf (ftable, "#define yylex %slex\n", spec_name_prefix);
- fprintf (ftable, "#define yyerror %serror\n", spec_name_prefix);
- fprintf (ftable, "#define yylval %slval\n", spec_name_prefix);
- fprintf (ftable, "#define yychar %schar\n", spec_name_prefix);
- fprintf (ftable, "#define yydebug %sdebug\n", spec_name_prefix);
- fprintf (ftable, "#define yynerrs %snerrs\n", spec_name_prefix);
+ obstack_1grow (oout, ',');
+ if (j >= 10)
+ {
+ obstack_sgrow (oout, "\n ");
+ j = 1;
+ }
+ else
+ ++j;
+ obstack_fgrow1 (oout, "%6d", table_data[i]);
}
+ obstack_1grow (oout, 0);
}
-/*-------------------------------------------------------.
-| Output constant strings to the ends of certain files. |
-`-------------------------------------------------------*/
-
-void
-output_trailers (void)
-{
- if (semantic_parser)
- fprintf (fguard, "\n }\n}\n");
-
- fprintf (faction, "\n");
-
- if (noparserflag)
- return;
-
- if (semantic_parser)
- fprintf (faction, " }\n");
- fprintf (faction, "}\n");
-}
-
-
-
static void
output_token_translations (void)
{
- int i, j;
-/* short *sp; JF unused */
-
- if (translations)
- {
- fprintf (ftable,
- "\n#define YYTRANSLATE(x) ((unsigned)(x) <= %d ? yytranslate[x] : %d)\n",
- max_user_token_number, nsyms);
-
- if (ntokens < 127) /* play it very safe; check maximum element value. */
- fprintf (ftable, "\nstatic const char yytranslate[] = { 0");
- else
- fprintf (ftable, "\nstatic const short yytranslate[] = { 0");
-
- j = 10;
- for (i = 1; i <= max_user_token_number; i++)
- {
- putc (',', ftable);
-
- if (j >= 10)
- {
- putc ('\n', ftable);
- j = 1;
- }
- else
- {
- j++;
- }
-
- fprintf (ftable, "%6d", token_translations[i]);
- }
-
- fprintf (ftable, "\n};\n");
- }
- else
- {
- fprintf (ftable, "\n#define YYTRANSLATE(x) (x)\n");
- }
+ output_table_data (&output_obstack, token_translations,
+ 0, 1, max_user_token_number + 1);
+ muscle_insert ("translate", obstack_finish (&output_obstack));
+ XFREE (token_translations);
}
static void
output_gram (void)
{
- int j;
- short *sp;
-
- /* With the ordinary parser,
- yyprhs and yyrhs are needed only for yydebug. */
- /* With the noparser option, all tables are generated */
- if (!semantic_parser && !noparserflag)
- fprintf (ftable, "\n#if YYDEBUG != 0\n");
-
- output_short_table (ftable, "yyprhs", rrhs,
- 0, 1, nrules + 1);
-
- fprintf (ftable, "\nstatic const short yyrhs[] = {%6d", ritem[0]);
-
- j = 10;
- for (sp = ritem + 1; *sp; sp++)
- {
- putc (',', ftable);
-
- if (j >= 10)
- {
- putc ('\n', ftable);
- j = 1;
- }
- else
- {
- j++;
- }
-
- if (*sp > 0)
- fprintf (ftable, "%6d", *sp);
- else
- fprintf (ftable, " 0");
- }
-
- fprintf (ftable, "\n};\n");
-
- if (!semantic_parser && !noparserflag)
- fprintf (ftable, "\n#endif\n");
+ {
+ int i;
+ short *values = XCALLOC (short, nrules + 1);
+ for (i = 0; i < nrules + 1; ++i)
+ values[i] = rule_table[i].rhs;
+ output_table_data (&output_obstack, values,
+ 0, 1, nrules + 1);
+ XFREE (values);
+ }
+
+ muscle_insert ("prhs", obstack_finish (&output_obstack));
+
+ {
+ size_t yyrhs_size = 1;
+ short *yyrhs, *sp;
+ int i;
+
+ for (sp = ritem + 1; *sp; sp++)
+ ++yyrhs_size;
+ yyrhs = XMALLOC (short, yyrhs_size);
+
+ for (sp = ritem + 1, i = 1; *sp; ++sp, ++i)
+ yyrhs[i] = *sp > 0 ? *sp : 0;
+
+ output_table_data (&output_obstack, yyrhs,
+ ritem[0], 1, yyrhs_size);
+ muscle_insert ("rhs", obstack_finish (&output_obstack));
+
+ XFREE (yyrhs);
+ }
+
+#if 0
+ if (!semantic_parser)
+ obstack_sgrow (&table_obstack, "\n#endif\n");
+#endif
}
static void
output_stos (void)
{
- output_short_table (ftable, "yystos", accessing_symbol,
- 0, 1, nstates);
+ int i;
+ short *values = (short *) alloca (sizeof (short) * nstates);
+ for (i = 0; i < nstates; ++i)
+ values[i] = state_table[i]->accessing_symbol;
+ output_table_data (&output_obstack, values,
+ 0, 1, nstates);
+ muscle_insert ("stos", obstack_finish (&output_obstack));
}
{
int i;
int j;
+ short *short_tab = NULL;
- fputs ("\n\
-#if YYDEBUG != 0\n\
-/* YYRLINE[yyn]: source line where rule number YYN was defined. */\n",
- ftable);
-
- output_short_table (ftable, "yyrline", rline,
- 0, 1, nrules + 1);
+ {
+ short *values = XCALLOC (short, nrules + 1);
+ for (i = 0; i < nrules + 1; ++i)
+ values[i] = rule_table[i].line;
+ output_table_data (&output_obstack, values,
+ 0, 1, nrules + 1);
+ muscle_insert ("rline", obstack_finish (&output_obstack));
+ XFREE (values);
+ }
- fputs ("#endif\n\n", ftable);
- if (toknumflag || noparserflag)
+ j = 0;
+ for (i = 0; i < nsyms; i++)
{
- fprintf (ftable, "#define YYNTOKENS %d\n", ntokens);
- fprintf (ftable, "#define YYNNTS %d\n", nvars);
- fprintf (ftable, "#define YYNRULES %d\n", nrules);
- fprintf (ftable, "#define YYNSTATES %d\n", nstates);
- fprintf (ftable, "#define YYMAXUTOK %d\n\n", max_user_token_number);
- }
-
- if (!toknumflag && !noparserflag)
- fprintf (ftable, "\n#if YYDEBUG != 0 || defined (YYERROR_VERBOSE)\n\n");
-
- /* Output the table of symbol names. */
-
- fprintf (ftable,
- "static const char * const yytname[] = { \"%s\"", tags[0]);
-
- j = strlen (tags[0]) + 44;
- for (i = 1; i < nsyms; i++)
- /* this used to be i<=nsyms, but that output a final "" symbol
- almost by accident */
- {
- char *p;
- putc (',', ftable);
- j++;
-
- if (j > 75)
+ /* 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, tags[i]));
+ /* Width of the next token, including the two quotes, the coma
+ and the space. */
+ int strsize = strlen (cp) + 2;
+
+ if (j + strsize > 75)
{
- putc ('\n', ftable);
- j = 0;
+ obstack_sgrow (&output_obstack, "\n ");
+ j = 2;
}
- putc ('\"', ftable);
- j++;
-
- for (p = tags[i]; p && *p; p++)
- {
- if (*p == '"' || *p == '\\')
- {
- fprintf (ftable, "\\%c", *p);
- j += 2;
- }
- else if (*p == '\n')
- {
- fprintf (ftable, "\\n");
- j += 2;
- }
- else if (*p == '\t')
- {
- fprintf (ftable, "\\t");
- j += 2;
- }
- else if (*p == '\b')
- {
- fprintf (ftable, "\\b");
- j += 2;
- }
- else if (*p < 040 || *p >= 0177)
- {
- fprintf (ftable, "\\%03o", *p);
- j += 4;
- }
- else
- {
- putc (*p, ftable);
- j++;
- }
- }
-
- putc ('\"', ftable);
- j++;
+ obstack_sgrow (&output_obstack, cp);
+ obstack_sgrow (&output_obstack, ", ");
+ j += strsize;
}
/* add a NULL entry to list of tokens */
- fprintf (ftable, ", NULL\n};\n");
+ obstack_sgrow (&output_obstack, "NULL");
- if (!toknumflag && !noparserflag)
- fprintf (ftable, "#endif\n\n");
+ /* Finish table and store. */
+ obstack_1grow (&output_obstack, 0);
+ muscle_insert ("tname", obstack_finish (&output_obstack));
/* Output YYTOKNUM. */
- if (toknumflag)
- {
- output_short_table (ftable, "yytoknum", user_toknums,
- 0, 1, ntokens + 1);
- }
+ output_table_data (&output_obstack, user_toknums,
+ 0, 1, ntokens + 1);
+ muscle_insert ("toknum", obstack_finish (&output_obstack));
/* Output YYR1. */
- fputs ("\
-/* YYR1[YYN]: Symbol number of symbol that rule YYN derives. */\n", ftable);
-
- output_short_table (ftable, "yyr1", rlhs,
- 0, 1, nrules + 1);
- XFREE (rlhs + 1);
-
- putc ('\n', ftable);
+ {
+ short *values = XCALLOC (short, nrules + 1);
+ for (i = 0; i < nrules + 1; ++i)
+ values[i] = rule_table[i].lhs;
+ output_table_data (&output_obstack, values,
+ 0, 1, nrules + 1);
+ muscle_insert ("r1", obstack_finish (&output_obstack));
+ XFREE (values);
+ }
/* Output YYR2. */
- fputs ("\
-/* YYR2[YYN]: Number of symbols composing right hand side of rule YYN. */\n\
-static const short yyr2[] = { 0", ftable);
- j = 10;
+ short_tab = XMALLOC (short, nrules + 1);
for (i = 1; i < nrules; i++)
- {
- putc (',', ftable);
-
- if (j >= 10)
- {
- putc ('\n', ftable);
- j = 1;
- }
- else
- {
- j++;
- }
-
- fprintf (ftable, "%6d", rrhs[i + 1] - rrhs[i] - 1);
- }
-
- putc (',', ftable);
- if (j >= 10)
- putc ('\n', ftable);
-
- fprintf (ftable, "%6d\n};\n", nitems - rrhs[nrules] - 1);
- XFREE (rrhs + 1);
-}
-
-
-static void
-output_defines (void)
-{
- fprintf (ftable, "\n\n#define\tYYFINAL\t\t%d\n", final_state);
- fprintf (ftable, "#define\tYYFLAG\t\t%d\n", MINSHORT);
- fprintf (ftable, "#define\tYYNTBASE\t%d\n", ntokens);
+ short_tab[i] = rule_table[i + 1].rhs - rule_table[i].rhs - 1;
+ short_tab[nrules] = nitems - rule_table[nrules].rhs - 1;
+ output_table_data (&output_obstack, short_tab,
+ 0, 1, nrules + 1);
+ muscle_insert ("r2", obstack_finish (&output_obstack));
+ XFREE (short_tab);
}
-
/*------------------------------------------------------------------.
| 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 |
int k;
int m = 0;
int n = 0;
- int count;
int default_rule;
int nreds;
- int max;
int rule;
int shift_state;
int symbol;
- unsigned mask;
- unsigned *wordp;
reductions *redp;
shifts *shiftp;
errs *errp;
default_rule = 0;
nreds = 0;
- redp = reduction_table[state];
+ redp = state_table[state]->reductions;
if (redp)
{
{
/* loop over all the rules available here which require
lookahead */
- m = lookaheads[state];
- n = lookaheads[state + 1];
+ m = state_table[state]->lookaheads;
+ n = state_table[state + 1]->lookaheads;
for (i = n - 1; i >= m; i--)
- {
- rule = -LAruleno[i];
- wordp = LA + i * tokensetsize;
- mask = 1;
-
- /* and find each token which the rule finds acceptable
- to come next */
- for (j = 0; j < ntokens; j++)
- {
- /* and record this rule as the rule to use if that
- token follows. */
- if (mask & *wordp)
- actrow[j] = rule;
-
- mask <<= 1;
- if (mask == 0)
- {
- mask = 1;
- wordp++;
- }
- }
- }
+ /* and find each token which the rule finds acceptable
+ to come next */
+ for (j = 0; j < ntokens; j++)
+ /* and record this rule as the rule to use if that
+ token follows. */
+ if (BITISSET (LA (i), j))
+ actrow[j] = -LAruleno[i];
}
}
- shiftp = shift_table[state];
-
/* Now see which tokens are allowed for shifts in this state. For
them, record the shift as the thing to do. So shift is preferred
to reduce. */
-
- if (shiftp)
+ shiftp = state_table[state]->shifts;
+ for (i = 0; i < shiftp->nshifts; i++)
{
- k = shiftp->nshifts;
-
- for (i = 0; i < k; i++)
- {
- shift_state = shiftp->shifts[i];
- if (!shift_state)
- continue;
+ shift_state = shiftp->shifts[i];
+ if (!shift_state)
+ continue;
- symbol = accessing_symbol[shift_state];
+ symbol = state_table[shift_state]->accessing_symbol;
- if (ISVAR (symbol))
- break;
+ if (ISVAR (symbol))
+ break;
- actrow[symbol] = shift_state;
+ actrow[symbol] = shift_state;
- /* Do not use any default reduction if there is a shift for
- error */
- if (symbol == error_token_number)
- nodefault = 1;
- }
+ /* Do not use any default reduction if there is a shift for
+ error */
+ if (symbol == error_token_number)
+ nodefault = 1;
}
- errp = err_table[state];
-
/* See which tokens are an explicit error in this state (due to
%nonassoc). For them, record MINSHORT as the action. */
+ errp = state_table[state]->errs;
if (errp)
{
if (nreds >= 1 && !nodefault)
{
- if (consistent[state])
+ if (state_table[state]->consistent)
default_rule = redp->rules[0];
else
{
- max = 0;
+ int max = 0;
for (i = m; i < n; i++)
{
- count = 0;
+ int count = 0;
rule = -LAruleno[i];
for (j = 0; j < ntokens; j++)
yydefact[i] = action_row (i);
save_row (i);
}
- XFREE (actrow);
- output_short_table (ftable, "yydefact", yydefact,
- yydefact[0], 1, nstates);
+ output_table_data (&output_obstack, yydefact,
+ yydefact[0], 1, nstates);
+ muscle_insert ("defact", obstack_finish (&output_obstack));
+
+ XFREE (actrow);
XFREE (yydefact);
}
-static void
-free_shifts (void)
-{
- shifts *sp, *sptmp; /* JF derefrenced freed ptr */
-
- XFREE (shift_table);
-
- for (sp = first_shift; sp; sp = sptmp)
- {
- sptmp = sp->next;
- XFREE (sp);
- }
-}
-
+/*-----------------------------.
+| Output the actions to OOUT. |
+`-----------------------------*/
static void
-free_reductions (void)
+actions_output (FILE *out, size_t *line)
{
- reductions *rp, *rptmp; /* JF fixed freed ptr */
-
- XFREE (reduction_table);
-
- for (rp = first_reduction; rp; rp = rptmp)
- {
- rptmp = rp->next;
- XFREE (rp);
- }
+ int rule;
+ for (rule = 1; rule < nrules + 1; ++rule)
+ if (rule_table[rule].action)
+ {
+ fprintf (out, " case %d:\n", rule);
+
+ if (!no_lines_flag)
+ fprintf (out, muscle_find ("linef"),
+ rule_table[rule].action_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",
+ rule_table[rule].action,
+ yacc_flag ? ";" : "");
+
+ /* We always output 4 '\n' per action. */
+ *line += 4;
+ /* Plus one if !no_lines_flag. */
+ if (!no_lines_flag)
+ ++*line;
+ /* Get the number of lines written by the user. */
+ *line += get_lines_number (rule_table[rule].action);
+ }
}
-
static void
save_column (int symbol, int default_state)
{
int i;
- int m;
- int n;
short *sp;
short *sp1;
short *sp2;
int count;
int symno;
- m = goto_map[symbol];
- n = goto_map[symbol + 1];
+ short begin = goto_map[symbol];
+ short end = goto_map[symbol + 1];
count = 0;
- for (i = m; i < n; i++)
+ for (i = begin; i < end; i++)
{
if (to_state[i] != default_state)
count++;
froms[symno] = sp1 = sp = XCALLOC (short, count);
tos[symno] = sp2 = XCALLOC (short, count);
- for (i = m; i < n; i++)
+ for (i = begin; i < end; i++)
{
if (to_state[i] != default_state)
{
static void
goto_actions (void)
{
- int i, j, k;
+ int i;
+ short *yydefgoto = XMALLOC (short, nsyms - ntokens);
state_count = XCALLOC (short, nstates);
-
- k = default_goto (ntokens);
- fprintf (ftable, "\nstatic const short yydefgoto[] = {%6d", k);
- save_column (ntokens, k);
-
- j = 10;
- for (i = ntokens + 1; i < nsyms; i++)
+ for (i = ntokens; i < nsyms; ++i)
{
- putc (',', ftable);
-
- if (j >= 10)
- {
- putc ('\n', ftable);
- j = 1;
- }
- else
- {
- j++;
- }
-
- k = default_goto (i);
- fprintf (ftable, "%6d", k);
- save_column (i, k);
+ int default_state = default_goto (i);
+ save_column (i, default_state);
+ yydefgoto[i - ntokens] = default_state;
}
- fprintf (ftable, "\n};\n");
+ output_table_data (&output_obstack, yydefgoto,
+ yydefgoto[0], 1, nsyms - ntokens);
+ muscle_insert ("defgoto", obstack_finish (&output_obstack));
+
XFREE (state_count);
+ XFREE (yydefgoto);
}
}
}
- berror ("pack_vector");
- return 0; /* JF keep lint happy */
+ assert (!"pack_vector");
+ return 0;
}
static void
output_base (void)
{
- output_short_table (ftable, "yypact", base,
- base[0], 1, nstates);
+ /* Output pact. */
+ output_table_data (&output_obstack, base,
+ base[0], 1, nstates);
+ muscle_insert ("pact", obstack_finish (&output_obstack));
- putc ('\n', ftable);
-
- output_short_table (ftable, "yypgoto", base,
- base[nstates], nstates + 1, nvectors);
+ /* Output pgoto. */
+ output_table_data (&output_obstack, base,
+ base[nstates], nstates + 1, nvectors);
+ muscle_insert ("pgoto", obstack_finish (&output_obstack));
XFREE (base);
}
static void
output_table (void)
{
- fprintf (ftable, "\n\n#define\tYYLAST\t\t%d\n\n\n", high);
- output_short_table (ftable, "yytable", table,
- table[0], 1, high + 1);
+ output_table_data (&output_obstack, table,
+ table[0], 1, high + 1);
+ muscle_insert ("table", obstack_finish (&output_obstack));
XFREE (table);
}
static void
output_check (void)
{
- output_short_table (ftable, "yycheck", check,
- check[0], 1, high + 1);
+ output_table_data (&output_obstack, check,
+ check[0], 1, high + 1);
+ muscle_insert ("check", obstack_finish (&output_obstack));
XFREE (check);
}
static void
output_actions (void)
{
+ int i;
nvectors = nstates + nvars;
froms = XCALLOC (short *, nvectors);
width = XCALLOC (short, nvectors);
token_actions ();
- free_shifts ();
- free_reductions ();
- XFREE (lookaheads);
XFREE (LA);
XFREE (LAruleno);
- XFREE (accessing_symbol);
goto_actions ();
XFREE (goto_map + ntokens);
sort_actions ();
pack_table ();
- putc ('\n', ftable);
+
output_base ();
output_table ();
- putc ('\n', ftable);
+
output_check ();
+
+ for (i = 0; i < nstates; ++i)
+ {
+ XFREE (state_table[i]->shifts);
+ XFREE (state_table[i]->reductions);
+ XFREE (state_table[i]->errs);
+ free (state_table[i]);
+ }
+ XFREE (state_table);
}
-/* copy the parser code into the ftable file at the end. */
+\f
+/*------------------------------------------------------------.
+| Copy the parser code from SKEL_FILENAME into OOUT obstack. |
+| and do the muscle substitution. |
+`------------------------------------------------------------*/
static void
-output_parser (void)
+output_parser (const char *skel_filename, FILE *out)
{
int c;
- static int number_of_dollar_signs = 0;
-#ifdef DONTDEF
- FILE *fpars;
-#else
-#define fpars fparser
-#endif
+ FILE *fskel;
+ size_t line;
- if (pure_parser)
- fprintf (ftable, "#define YYPURE 1\n\n");
+ fskel = xfopen (skel_filename, "r");
-#ifdef DONTDEF
- /* JF no longer needed 'cuz open_extra_files changes the currently
- open parser from bison.simple to bison.hairy */
- if (semantic_parser)
- fpars = fparser;
- else
- fpars = fparser1;
-#endif
-
- /* Loop over lines in the standard parser file. */
-
- while (1)
+ /* New output code. */
+ line = 1;
+ c = getc (fskel);
+ while (c != EOF)
{
- int write_line = 1;
-
- c = getc (fpars);
-
- /* See if the line starts with `#line.
- If so, set write_line to 0. */
- if (nolinesflag)
- if (c == '#')
- {
- c = getc (fpars);
- if (c == 'l')
- {
- c = getc (fpars);
- if (c == 'i')
- {
- c = getc (fpars);
- if (c == 'n')
- {
- c = getc (fpars);
- if (c == 'e')
- write_line = 0;
- else
- fprintf (ftable, "#lin");
- }
- else
- fprintf (ftable, "#li");
- }
- else
- fprintf (ftable, "#l");
- }
- else
- fprintf (ftable, "#");
- }
-
- /* now write out the line... */
- for (; c != '\n' && c != EOF; c = getc (fpars))
- if (write_line)
- {
- if (c == '$')
- {
- number_of_dollar_signs++;
- assert (number_of_dollar_signs == 1);
- /* `$' in the parser file indicates where to put the actions.
- Copy them in at this point. */
- rewind (faction);
- for (c = getc (faction); c != EOF; c = getc (faction))
- putc (c, ftable);
- /* Skip the end of the line containing `$'. */
- write_line = 0;
- }
- else
- putc (c, ftable);
- }
- if (c == EOF)
- break;
- putc (c, ftable);
+ if (c != '%')
+ {
+ if (c == '\n')
+ ++line;
+ putc (c, out);
+ c = getc (fskel);
+ }
+ else if ((c = getc (fskel)) == '%')
+ {
+ /* Read the muscle. */
+ const char *muscle_key = 0;
+ const char *muscle_value = 0;
+
+ while (isalnum (c = getc (fskel)) || c == '-')
+ obstack_1grow (&muscle_obstack, c);
+ obstack_1grow (&muscle_obstack, 0);
+
+ /* Output the right value, or see if it's something special. */
+ muscle_key = obstack_finish (&muscle_obstack);
+ muscle_value = muscle_find (muscle_key);
+ if (!strcmp (muscle_key, "actions"))
+ actions_output (out, &line);
+ else if (!strcmp (muscle_key, "line"))
+ fprintf (out, "%d", line);
+ else if (muscle_value)
+ {
+ fputs (muscle_value, out);
+ line += get_lines_number (muscle_value);
+ }
+ else
+ {
+ fputs ("%%", out);
+ fputs (muscle_key, out);
+ }
+ }
+ else
+ putc ('%', out);
}
- assert (number_of_dollar_signs == 1);
+
+ /* End. */
+ xfclose (fskel);
}
+/*----------------------------------------.
+| Prepare the master parser to be output |
+`----------------------------------------*/
+
static void
-output_program (void)
+output_master_parser (void)
{
- int c;
-
- if (!nolinesflag)
- fprintf (ftable, "#line %d \"%s\"\n", lineno, infile);
-
- c = getc (finput);
- while (c != EOF)
+ FILE *parser = xfopen (parser_file_name, "w");
+ if (!skeleton)
{
- putc (c, ftable);
- c = getc (finput);
+ if (semantic_parser)
+ skeleton = skeleton_find ("BISON_HAIRY", BISON_HAIRY);
+ else
+ skeleton = skeleton_find ("BISON_SIMPLE", BISON_SIMPLE);
}
+ muscle_insert ("skeleton", skeleton);
+ muscle_insert ("parser-file-name", parser_file_name);
+
+ output_parser (skeleton, parser);
+ xfclose (parser);
}
+/* FIXME. */
+
+#define MUSCLE_INSERT_INT(Key, Value) \
+{ \
+ obstack_fgrow1 (&muscle_obstack, "%d", Value); \
+ obstack_1grow (&muscle_obstack, 0); \
+ muscle_insert (Key, obstack_finish (&muscle_obstack)); \
+}
+
+#define MUSCLE_INSERT_STRING(Key, Value) \
+{ \
+ obstack_sgrow (&muscle_obstack, Value); \
+ obstack_1grow (&muscle_obstack, 0); \
+ muscle_insert (Key, obstack_finish (&muscle_obstack)); \
+}
+
+#define MUSCLE_INSERT_PREFIX(Key, Value) \
+{ \
+ obstack_fgrow2 (&muscle_obstack, "%s%s", spec_name_prefix, Value); \
+ obstack_1grow (&muscle_obstack, 0); \
+ muscle_insert (Key, obstack_finish (&muscle_obstack)); \
+}
+
static void
-free_itemsets (void)
+prepare (void)
{
- core *cp, *cptmp;
+ MUSCLE_INSERT_INT ("last", high);
+ MUSCLE_INSERT_INT ("flag", MINSHORT);
+ 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 ("ntbase", ntokens);
+ MUSCLE_INSERT_INT ("error-verbose", error_verbose);
+ MUSCLE_INSERT_STRING ("prefix", spec_name_prefix);
+
+ MUSCLE_INSERT_INT ("nnts", nvars);
+ MUSCLE_INSERT_INT ("nrules", nrules);
+ MUSCLE_INSERT_INT ("nstates", nstates);
+ MUSCLE_INSERT_INT ("ntokens", ntokens);
+
+ MUSCLE_INSERT_INT ("locations-flag", locations_flag);
+}
- XFREE (state_table);
- for (cp = first_state; cp; cp = cptmp)
+/*-------------------------.
+| Output the header file. |
+`-------------------------*/
+
+static void
+header_output (void)
+{
+ 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);
+ fprintf (out, "\
+#ifndef YYSTYPE\n\
+typedef %s
+yystype;\n\
+# define YYSTYPE yystype\n\
+#endif\n",
+ muscle_find ("stype"));
+
+ if (!pure_parser)
+ fprintf (out, "\nextern YYSTYPE %slval;\n",
+ spec_name_prefix);
+ if (semantic_parser)
{
- cptmp = cp->next;
- XFREE (cp);
+ int i;
+
+ for (i = ntokens; i < nsyms; i++)
+ /* don't make these for dummy nonterminals made by gensym. */
+ if (*tags[i] != '@')
+ fprintf (out, "# define\tNT%s\t%d\n", tags[i], i);
}
+
+ fprintf (out, "\n#endif /* not %s */\n", macro_name);
+ free (macro_name);
+ xfclose (out);
}
void
output (void)
{
- int c;
-
- /* output_token_defines(ftable); / * JF put out token defines FIRST */
- if (!semantic_parser) /* JF Put out other stuff */
- {
- rewind (fattrs);
- while ((c = getc (fattrs)) != EOF)
- putc (c, ftable);
- }
- reader_output_yylsp (ftable);
- if (debugflag)
- fputs ("\
-#ifndef YYDEBUG\n\
-# define YYDEBUG 1\n\
-#endif\n\
-\n",
- ftable);
+ obstack_init (&output_obstack);
- if (semantic_parser)
- fprintf (ftable, "#include \"%s\"\n", attrsfile);
-
- if (!noparserflag)
- fprintf (ftable, "#include <stdio.h>\n\n");
-
- /* Make "const" do nothing if not in ANSI C. */
- fputs ("\
-#ifndef __cplusplus\n\
-# ifndef __STDC__\n\
-# define const\n\
-# endif\n\
-#endif\n\
-\n",
- ftable);
-
- free_itemsets ();
- output_defines ();
output_token_translations ();
-/* if (semantic_parser) */
- /* This is now unconditional because debugging printouts can use it. */
output_gram ();
+
XFREE (ritem);
if (semantic_parser)
output_stos ();
output_rule_data ();
+ XFREE (user_toknums);
output_actions ();
- if (!noparserflag)
- output_parser ();
- output_program ();
+
+ prepare ();
+ /* Copy definitions in directive. */
+ obstack_1grow (&attrs_obstack, 0);
+ muscle_insert ("prologue", obstack_finish (&attrs_obstack));
+
+ /* Output the parser. */
+ output_master_parser ();
+ /* Output the header if needed. */
+ if (defines_flag)
+ header_output ();
+
+ free (rule_table + 1);
+ obstack_free (&muscle_obstack, 0);
+ obstack_free (&output_obstack, 0);
+ obstack_free (&action_obstack, 0);
}
projects / bison.git / blobdiff