/* 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 "obstack.h"
+#include "quotearg.h"
#include "getargs.h"
#include "xalloc.h"
#include "files.h"
#include "lalr.h"
#include "reader.h"
#include "conflicts.h"
+#include "macrotab.h"
extern void berror PARAMS((const char *));
-
-
static int nvectors;
static int nentries;
static short **froms;
static int lowzero;
static int high;
+struct obstack macro_obstack;
+struct obstack output_obstack;
+/* FIXME. */
static inline void
-output_short_or_char_table (FILE *out,
- const char *comment,
- const char *type,
- const char *table_name,
- short *short_table,
- short first_value,
- short begin, short end)
+output_table_data (struct obstack* oout,
+ short* table,
+ short first,
+ short begin,
+ short end)
{
- int i, j;
-
- if (comment)
- fprintf (out, "/* %s. */\n", comment);
-
- fprintf (out, "static const %s %s[] =\n{\n %6d",
- type, table_name, first_value);
-
- j = 1;
- for (i = begin; i < end; i++)
+ int i;
+ int j = 1;
+
+ obstack_fgrow1 (oout, "%6d", first);
+ for (i = begin; i < end; ++i)
{
- putc (',', out);
-
+ obstack_1grow (oout, ',');
if (j >= 10)
{
- fputs ("\n ", out);
+ obstack_sgrow (oout, "\n ");
j = 1;
}
else
- {
- j++;
- }
-
- fprintf (out, "%6d", short_table[i]);
+ ++j;
+ obstack_fgrow1 (oout, "%6d", table[i]);
}
-
- fprintf (out, "\n};\n");
-}
-
-
-static inline void
-output_short_table (FILE *out,
- const char *comment,
- const char *table_name,
- short *short_table,
- short first_value,
- short begin, short end)
-{
- output_short_or_char_table (out, comment, "short", table_name, short_table,
- first_value, begin, end);
-}
-
-
-/*--------------------------------------------------------------.
-| 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"
-
-void
-output_headers (void)
-{
- if (semantic_parser)
- fprintf (fguard, GUARDSTR, attrsfile);
-
- if (no_parser_flag)
- 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");
-*/
-
- /* Rename certain symbols if -p was specified. */
- if (spec_name_prefix)
- {
- 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);
- }
-}
-
-
-/*-------------------------------------------------------.
-| 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 (no_parser_flag)
- return;
-
- if (semantic_parser)
- fprintf (faction, " }\n");
- fprintf (faction, "}\n");
+ obstack_1grow (oout, 0);
}
-
static void
output_token_translations (void)
{
- fputs ("\
-\n\
-/* YYRANSLATE(YYLEX) -- Bison token number corresponding to YYLEX. */\n",
- ftable);
- if (translations)
- {
- fprintf (ftable,
- "#define YYTRANSLATE(x) ((unsigned)(x) <= %d ? yytranslate[x] : %d)\
-\n\
-\n",
- max_user_token_number, nsyms);
-
- output_short_or_char_table (ftable,
- "YYRANSLATE[YYLEX] -- Bison token number corresponding to YYLEX",
- ntokens < 127 ? "char" : "short",
- "yytranslate", token_translations,
- 0, 1, max_user_token_number + 1);
- }
- else
- {
- fprintf (ftable, "\n#define YYTRANSLATE(x) (x)\n");
- }
+ output_table_data (&output_obstack, token_translations,
+ 0, 1, max_user_token_number + 1);
+ macro_insert ("translate", obstack_finish (&output_obstack));
}
static void
output_gram (void)
{
- /* With the ordinary parser,
- yyprhs and yyrhs are needed only for yydebug. */
- /* With the no_parser option, all tables are generated */
- if (!semantic_parser && !no_parser_flag)
- fprintf (ftable, "\n#if YYDEBUG != 0\n");
-
- output_short_table (ftable, NULL, "yyprhs", rrhs,
- 0, 1, nrules + 1);
-
+ output_table_data (&output_obstack, rrhs,
+ 0, 1, nrules + 1);
+ macro_insert ("prhs", obstack_finish (&output_obstack));
+
{
size_t yyrhs_size = 1;
short *yyrhs, *sp;
for (sp = ritem + 1, i = 1; *sp; ++sp, ++i)
yyrhs[i] = *sp > 0 ? *sp : 0;
- output_short_table (ftable, NULL, "yyrhs", yyrhs,
- ritem[0], 1, yyrhs_size);
+ output_table_data (&output_obstack, yyrhs,
+ ritem[0], 1, yyrhs_size);
+ macro_insert ("rhs", obstack_finish (&output_obstack));
+
XFREE (yyrhs);
}
- if (!semantic_parser && !no_parser_flag)
- fprintf (ftable, "\n#endif\n");
+ /* if (!semantic_parser && !no_parser_flag)
+ obstack_sgrow (&table_obstack, "\n#endif\n"); */
}
static void
output_stos (void)
{
- output_short_table (ftable, NULL, "yystos", accessing_symbol,
- 0, 1, nstates);
+ output_table_data (&output_obstack, accessing_symbol,
+ 0, 1, nstates);
+ macro_insert ("stos", obstack_finish (&output_obstack));
}
int j;
short *short_tab = NULL;
- fputs ("\n\
-#if YYDEBUG != 0\n",
- ftable);
-
- output_short_table (ftable,
- "YYRLINE[YYN] -- source line where rule number YYN was defined",
- "yyrline", rline,
- 0, 1, nrules + 1);
-
- fputs ("#endif\n\n", ftable);
-
- if (token_table_flag || no_parser_flag)
- {
- 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);
- }
-
- /* Output the table of symbol names. */
- if (!token_table_flag && !no_parser_flag)
- fputs ("\n#if YYDEBUG != 0 || defined YYERROR_VERBOSE\n\n", ftable);
- fputs ("\
-/* YYTNAME[TOKEN_NUM] -- String name of the token TOKEN_NUM. */\n",
- ftable);
- fprintf (ftable,
- "static const char *const yytname[] =\n{\n ");
+ output_table_data (&output_obstack, rline,
+ 0, 1, nrules + 1);
+ macro_insert ("rline", obstack_finish (&output_obstack));
j = 0;
for (i = 0; i < nsyms; i++)
if (j + strsize > 75)
{
- fputs ("\n ", ftable);
+ obstack_sgrow (&output_obstack, "\n ");
j = 2;
}
- putc ('\"', ftable);
+ obstack_1grow (&output_obstack, '\"');
for (p = tags[i]; p && *p; p++)
{
if (*p == '"' || *p == '\\')
- {
- fprintf (ftable, "\\%c", *p);
- }
+ obstack_fgrow1 (&output_obstack, "\\%c", *p);
else if (*p == '\n')
- {
- fprintf (ftable, "\\n");
- }
+ obstack_sgrow (&output_obstack, "\\n");
else if (*p == '\t')
- {
- fprintf (ftable, "\\t");
- }
+ obstack_sgrow (&output_obstack, "\\t");
else if (*p == '\b')
- {
- fprintf (ftable, "\\b");
- }
+ obstack_sgrow (&output_obstack, "\\b");
else if (*p < 040 || *p >= 0177)
- {
- fprintf (ftable, "\\%03o", *p);
- }
+ obstack_fgrow1 (&output_obstack, "\\%03o", *p);
else
- {
- putc (*p, ftable);
- }
+ obstack_1grow (&output_obstack, *p);
}
- fputs ("\", ", ftable);
+ 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 (!token_table_flag && !no_parser_flag)
- fprintf (ftable, "#endif\n\n");
+ /* Finish table and store. */
+ obstack_1grow (&output_obstack, 0);
+ macro_insert ("tname", obstack_finish (&output_obstack));
/* Output YYTOKNUM. */
- if (token_table_flag)
- {
- output_short_table (ftable,
- "YYTOKNUM[YYLEX] -- Index in YYTNAME corresponding to YYLEX",
- "yytoknum", user_toknums,
- 0, 1, ntokens + 1);
- }
+ output_table_data (&output_obstack, user_toknums,
+ 0, 1, ntokens + 1);
+ macro_insert ("toknum", obstack_finish (&output_obstack));
/* Output YYR1. */
- output_short_table (ftable,
- "YYR1[YYN] -- Symbol number of symbol that rule YYN derives",
- "yyr1", rlhs,
- 0, 1, nrules + 1);
+ output_table_data (&output_obstack, rlhs,
+ 0, 1, nrules + 1);
+ macro_insert ("r1", obstack_finish (&output_obstack));
XFREE (rlhs + 1);
- putc ('\n', ftable);
-
/* Output YYR2. */
short_tab = XMALLOC (short, nrules + 1);
for (i = 1; i < nrules; i++)
short_tab[i] = rrhs[i + 1] - rrhs[i] - 1;
short_tab[nrules] = nitems - rrhs[nrules] - 1;
- output_short_table (ftable,
- "YYR2[YYN] -- Number of symbols composing right hand side of rule YYN",
- "yyr2", short_tab,
- 0, 1, nrules + 1);
- putc ('\n', ftable);
-
+ output_table_data (&output_obstack, short_tab,
+ 0, 1, nrules + 1);
+ macro_insert ("r2", obstack_finish (&output_obstack));
XFREE (short_tab);
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);
-}
-
-
/*------------------------------------------------------------------.
| 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 |
yydefact[i] = action_row (i);
save_row (i);
}
- XFREE (actrow);
- output_short_table (ftable,
- "YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE\n\
- doesn't specify something else to do. Zero means the default is an\n\
- error",
- "yydefact", yydefact,
- yydefact[0], 1, nstates);
- putc ('\n', ftable);
+ output_table_data (&output_obstack, yydefact,
+ yydefact[0], 1, nstates);
+ macro_insert ("defact", obstack_finish (&output_obstack));
+
+ XFREE (actrow);
XFREE (yydefact);
}
goto_actions (void)
{
int i;
-
short *yydefgoto = XMALLOC (short, nsyms - ntokens);
- state_count = XCALLOC (short, nstates);
+ state_count = XCALLOC (short, nstates);
for (i = ntokens; i < nsyms; ++i)
{
int default_state = default_goto (i);
yydefgoto[i - ntokens] = default_state;
}
- output_short_table (ftable, NULL, "yydefgoto", yydefgoto,
- yydefgoto[0], 1, nsyms - ntokens);
+ output_table_data (&output_obstack, yydefgoto,
+ yydefgoto[0], 1, nsyms - ntokens);
+ macro_insert ("defgoto", obstack_finish (&output_obstack));
XFREE (state_count);
XFREE (yydefgoto);
static void
output_base (void)
{
- output_short_table (ftable, NULL, "yypact", base,
- base[0], 1, nstates);
+ /* Output pact. */
+ output_table_data (&output_obstack, base,
+ base[0], 1, nstates);
+ macro_insert ("pact", obstack_finish (&output_obstack));
- putc ('\n', ftable);
-
- output_short_table (ftable, NULL, "yypgoto", base,
- base[nstates], nstates + 1, nvectors);
+ /* Output pgoto. */
+ output_table_data (&output_obstack, base,
+ base[nstates], nstates + 1, nvectors);
+ macro_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, NULL, "yytable", table,
- table[0], 1, high + 1);
+ output_table_data (&output_obstack, table,
+ table[0], 1, high + 1);
+ macro_insert ("table", obstack_finish (&output_obstack));
XFREE (table);
}
static void
output_check (void)
{
- output_short_table (ftable, NULL, "yycheck", check,
- check[0], 1, high + 1);
+ output_table_data (&output_obstack, check,
+ check[0], 1, high + 1);
+ macro_insert ("check", obstack_finish (&output_obstack));
XFREE (check);
}
sort_actions ();
pack_table ();
- putc ('\n', ftable);
+ /* FIXME: See if this is useful. */
+ /* obstack_1grow (&table_obstack, '\n'); */
output_base ();
output_table ();
- putc ('\n', ftable);
+ /* FIXME: See if this is useful. */
+ /* obstack_1grow (&table_obstack, '\n'); */
output_check ();
}
-/* copy the parser code into the ftable file at the end. */
+/*------------------------------------------.
+| Copy the parser code into TABLE_OBSTACK. |
+`------------------------------------------*/
static void
output_parser (void)
{
int c;
- static int number_of_dollar_signs = 0;
-#ifdef DONTDEF
- FILE *fpars;
-#else
-#define fpars fparser
-#endif
-
- if (pure_parser)
- fprintf (ftable, "#define YYPURE 1\n\n");
-
-#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
+ FILE *fskel;
+ size_t line;
+ int actions_dumped = 0;
/* Loop over lines in the standard parser file. */
+ if (!skeleton)
+ {
+ if (semantic_parser)
+ skeleton = skeleton_find ("BISON_HAIRY", BISON_HAIRY);
+ else
+ skeleton = skeleton_find ("BISON_SIMPLE", BISON_SIMPLE);
+ }
+ fskel = xfopen (skeleton, "r");
- 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 (no_lines_flag)
- 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;
+ obstack_1grow (&table_obstack, c);
+ c = getc (fskel);
+ }
+ else if ((c = getc (fskel)) == '%')
+ {
+ /* Read the macro. */
+ char* macro_key = 0;
+ char* macro_value = 0;
+ while (isalnum (c = getc (fskel)) || c == '_')
+ obstack_1grow (¯o_obstack, c);
+ obstack_1grow (¯o_obstack, 0);
+
+ /* Output the right value, or see if it's something special. */
+ macro_key = obstack_finish (¯o_obstack);
+ macro_value = macro_find (macro_key);
+ if (macro_value)
+ obstack_sgrow (&table_obstack, macro_value);
+ else if (!strcmp (macro_key, "line"))
+ obstack_fgrow1 (&table_obstack, "%d", line + 1);
+ else if (!strcmp (macro_key, "action"))
+ {
+ size_t size = obstack_object_size (&action_obstack);
+ obstack_grow (&table_obstack,
+ obstack_finish (&action_obstack), size);
+ }
+ else
+ {
+ obstack_sgrow (&table_obstack, "%%");
+ obstack_sgrow (&table_obstack, macro_key);
+ }
+ }
+ else
+ obstack_1grow (&table_obstack, '%');
}
- assert (number_of_dollar_signs == 1);
+
+ /* End. */
+ xfclose (fskel);
}
static void
{
int c;
- if (!no_lines_flag)
- fprintf (ftable, "#line %d \"%s\"\n", lineno, infile);
-
- c = getc (finput);
- while (c != EOF)
- {
- putc (c, ftable);
- c = getc (finput);
- }
+ while ((c = getc (finput)) != EOF)
+ obstack_1grow (&table_obstack, c);
}
}
}
+/* FIXME. */
-/*----------------------------------------------------------.
-| Output the parsing tables and the parser code to ftable. |
-`----------------------------------------------------------*/
+#define MACRO_INSERT_INT(Key, Value) \
+{ \
+ obstack_fgrow1 (¯o_obstack, "%d", Value); \
+ obstack_1grow (¯o_obstack, 0); \
+ macro_insert (Key, obstack_finish (¯o_obstack)); \
+}
-void
-output (void)
+#define MACRO_INSERT_STRING(Key, Value) \
+{ \
+ obstack_sgrow (¯o_obstack, Value); \
+ obstack_1grow (¯o_obstack, 0); \
+ macro_insert (Key, obstack_finish (¯o_obstack)); \
+}
+
+#define MACRO_INSERT_PREFIX(Key, Value) \
+{ \
+ obstack_fgrow2 (¯o_obstack, "%s%s", spec_name_prefix, Value); \
+ obstack_1grow (¯o_obstack, 0); \
+ macro_insert (Key, obstack_finish (¯o_obstack)); \
+}
+
+static void
+prepare (void)
{
- int c;
+ MACRO_INSERT_INT ("last", high);
+ MACRO_INSERT_INT ("flag", MINSHORT);
+ MACRO_INSERT_INT ("pure", pure_parser);
+ MACRO_INSERT_INT ("nsym", nsyms);
+ MACRO_INSERT_INT ("debug", debug_flag);
+ MACRO_INSERT_INT ("final", final_state);
+ MACRO_INSERT_INT ("maxtok", max_user_token_number);
+ MACRO_INSERT_INT ("ntbase", ntokens);
+ MACRO_INSERT_INT ("verbose", 0);
+
+ MACRO_INSERT_STRING ("filename", infile);
+
+ MACRO_INSERT_INT ("nnts", nvars);
+ MACRO_INSERT_INT ("nrules", nrules);
+ MACRO_INSERT_INT ("nstates", nstates);
+ MACRO_INSERT_INT ("ntokens", ntokens);
- /* output_token_defines(ftable); / * JF put out token defines FIRST */
- if (!semantic_parser) /* JF Put out other stuff */
+ if (spec_name_prefix)
{
- rewind (fattrs);
- while ((c = getc (fattrs)) != EOF)
- putc (c, ftable);
+ MACRO_INSERT_PREFIX ("yylex", "lex");
+ MACRO_INSERT_PREFIX ("yychar", "char");
+ MACRO_INSERT_PREFIX ("yylval", "lval");
+ MACRO_INSERT_PREFIX ("yydebug", "debug");
+ MACRO_INSERT_PREFIX ("yyerror", "error");
+ MACRO_INSERT_PREFIX ("yynerrs", "nerrs");
+ MACRO_INSERT_PREFIX ("yyparse", "parse");
}
- reader_output_yylsp (ftable);
- if (debug_flag)
- fputs ("\
-#ifndef YYDEBUG\n\
-# define YYDEBUG 1\n\
-#endif\n\
-\n",
- ftable);
-
- if (semantic_parser)
- fprintf (ftable, "#include \"%s\"\n", attrsfile);
+}
- if (!no_parser_flag)
- fprintf (ftable, "#include <stdio.h>\n\n");
+/*----------------------------------------------------------.
+| Output the parsing tables and the parser code to ftable. |
+`----------------------------------------------------------*/
- /* 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);
+void
+output (void)
+{
+ obstack_init (&output_obstack);
+ /* reader_output_yylsp (&table_obstack); */
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 ();
output_actions ();
- if (!no_parser_flag)
- output_parser ();
+
+ /* if (!no_parser_flag) */
+ prepare ();
+ /* Copy definitions in directive. */
+ macro_insert ("definitions", obstack_finish (&attrs_obstack));
+ output_parser ();
output_program ();
+
+ obstack_free (¯o_obstack, 0);
+ obstack_free (&output_obstack, 0);
}
projects / bison.git / blobdiff