-/* Output the generated parsing program for bison,
- Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
+/* Output the generated parsing program for Bison.
+
+ Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, 2005
Free Software Foundation, Inc.
This file is part of Bison, the GNU Compiler Compiler.
You should have received a copy of the GNU General Public License
along with Bison; see the file COPYING. If not, write to the Free
- Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#include "system.h"
-#include "quotearg.h"
-#include "error.h"
-#include "subpipe.h"
-#include "getargs.h"
+
+#include <error.h>
+#include <get-errno.h>
+#include <quotearg.h>
+#include <subpipe.h>
+#include <timevar.h>
+
+#include "complain.h"
#include "files.h"
+#include "getargs.h"
#include "gram.h"
-#include "complain.h"
+#include "muscle_tab.h"
#include "output.h"
#include "reader.h"
+#include "scan-skel.h"
#include "symtab.h"
#include "tables.h"
-#include "muscle_tab.h"
-
-/* From src/scan-skel.l. */
-void scan_skel (FILE *);
static struct obstack format_obstack;
-int error_verbose = 0;
+bool error_verbose = false;
#define GENERATE_MUSCLE_INSERT_TABLE(Name, Type) \
\
static void \
-Name (const char *name, \
+Name (char const *name, \
Type *table_data, \
Type first, \
int begin, \
{ \
Type min = first; \
Type max = first; \
+ long int lmin; \
+ long int lmax; \
int i; \
int j = 1; \
\
obstack_1grow (&format_obstack, 0); \
muscle_insert (name, obstack_finish (&format_obstack)); \
\
+ lmin = min; \
+ lmax = max; \
/* Build `NAME_min' and `NAME_max' in the obstack. */ \
obstack_fgrow1 (&format_obstack, "%s_min", name); \
obstack_1grow (&format_obstack, 0); \
- MUSCLE_INSERT_LONG_INT (obstack_finish (&format_obstack), \
- (long int) min); \
+ MUSCLE_INSERT_LONG_INT (obstack_finish (&format_obstack), lmin); \
obstack_fgrow1 (&format_obstack, "%s_max", name); \
obstack_1grow (&format_obstack, 0); \
- MUSCLE_INSERT_LONG_INT (obstack_finish (&format_obstack), \
- (long int) max); \
+ MUSCLE_INSERT_LONG_INT (obstack_finish (&format_obstack), lmax); \
}
GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_unsigned_int_table, unsigned int)
GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_int_table, int)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_short_table, short)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_base_table, base_t)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_rule_number_table, rule_number_t)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_symbol_number_table, symbol_number_t)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_item_number_table, item_number_t)
-GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_state_number_table, state_number_t)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_base_table, base_number)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_rule_number_table, rule_number)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_symbol_number_table, symbol_number)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_item_number_table, item_number)
+GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_state_number_table, state_number)
-/*-----------------------------------------------------------------.
-| Prepare the muscles related to the tokens: translate, tname, and |
-| toknum. |
-`-----------------------------------------------------------------*/
+/*--------------------------------------------------------------------.
+| Print to OUT a representation of STRING escaped both for C and M4. |
+`--------------------------------------------------------------------*/
static void
-prepare_tokens (void)
+escaped_output (FILE *out, char const *string)
{
+ char const *p;
+ fprintf (out, "[[");
+
+ for (p = quotearg_style (c_quoting_style, string); *p; p++)
+ switch (*p)
+ {
+ case '$': fputs ("$][", out); break;
+ case '@': fputs ("@@", out); break;
+ case '[': fputs ("@{", out); break;
+ case ']': fputs ("@}", out); break;
+ default: fputc (*p, out); break;
+ }
+
+ fprintf (out, "]]");
+}
+
+
+/*------------------------------------------------------------------.
+| Prepare the muscles related to the symbols: translate, tname, and |
+| toknum. |
+`------------------------------------------------------------------*/
+
+static void
+prepare_symbols (void)
+{
+ MUSCLE_INSERT_BOOL ("token_table", token_table_flag);
+ MUSCLE_INSERT_INT ("tokens_number", ntokens);
+ MUSCLE_INSERT_INT ("nterms_number", nvars);
+ MUSCLE_INSERT_INT ("undef_token_number", undeftoken->number);
+ MUSCLE_INSERT_INT ("user_token_number_max", max_user_token_number);
+
muscle_insert_symbol_number_table ("translate",
token_translations,
token_translations[0],
1, max_user_token_number + 1);
+ /* tname -- token names. */
{
int i;
- int j = 0;
+ /* We assume that the table will be output starting at column 2. */
+ int j = 2;
for (i = 0; i < nsyms; i++)
{
- /* Be sure not to use twice the same QUOTEARG slot:
- SYMBOL_TAG_GET uses slot 0. */
- const char *cp =
- quotearg_n_style (1, c_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)
+ char const *cp = quotearg_style (c_quoting_style, symbols[i]->tag);
+ /* Width of the next token, including the two quotes, the
+ comma and the space. */
+ int width = strlen (cp) + 2;
+
+ if (j + width > 75)
{
- obstack_sgrow (&format_obstack, "\n ");
- j = 2;
+ obstack_sgrow (&format_obstack, "\n ");
+ j = 1;
}
- obstack_sgrow (&format_obstack, cp);
- obstack_sgrow (&format_obstack, ", ");
- j += strsize;
+ if (i)
+ obstack_1grow (&format_obstack, ' ');
+ MUSCLE_OBSTACK_SGROW (&format_obstack, cp);
+ obstack_1grow (&format_obstack, ',');
+ j += width;
}
/* Add a NULL entry to list of tokens (well, 0, as NULL might not be
defined). */
- obstack_sgrow (&format_obstack, "0");
+ obstack_sgrow (&format_obstack, " 0");
/* Finish table and store. */
obstack_1grow (&format_obstack, 0);
/* Output YYTOKNUM. */
{
int i;
- int *values = XCALLOC (int, ntokens);
+ int *values = xnmalloc (ntokens, sizeof *values);
for (i = 0; i < ntokens; ++i)
values[i] = symbols[i]->user_token_number;
muscle_insert_int_table ("toknum", values,
/*-------------------------------------------------------------.
| Prepare the muscles related to the rules: rhs, prhs, r1, r2, |
-| rline, dprec, merger |
+| rline, dprec, merger. |
`-------------------------------------------------------------*/
static void
prepare_rules (void)
{
- rule_number_t r;
+ rule_number r;
unsigned int i = 0;
- item_number_t *rhs = XMALLOC (item_number_t, nritems);
- unsigned int *prhs = XMALLOC (unsigned int, nrules);
- unsigned int *rline = XMALLOC (unsigned int, nrules);
- symbol_number_t *r1 = XMALLOC (symbol_number_t, nrules);
- unsigned int *r2 = XMALLOC (unsigned int, nrules);
- short *dprec = XMALLOC (short, nrules);
- short *merger = XMALLOC (short, nrules);
+ item_number *rhs = xnmalloc (nritems, sizeof *rhs);
+ unsigned int *prhs = xnmalloc (nrules, sizeof *prhs);
+ unsigned int *rline = xnmalloc (nrules, sizeof *rline);
+ symbol_number *r1 = xnmalloc (nrules, sizeof *r1);
+ unsigned int *r2 = xnmalloc (nrules, sizeof *r2);
+ int *dprec = xnmalloc (nrules, sizeof *dprec);
+ int *merger = xnmalloc (nrules, sizeof *merger);
for (r = 0; r < nrules; ++r)
{
- item_number_t *rhsp = NULL;
+ item_number *rhsp = NULL;
/* Index of rule R in RHS. */
prhs[r] = i;
/* RHS of the rule R. */
/* Separator in RHS. */
rhs[i++] = -1;
/* Line where rule was defined. */
- rline[r] = rules[r].location.first_line;
- /* Dynamic precedence (GLR) */
+ rline[r] = rules[r].location.start.line;
+ /* Dynamic precedence (GLR). */
dprec[r] = rules[r].dprec;
- /* Merger-function index (GLR) */
+ /* Merger-function index (GLR). */
merger[r] = rules[r].merger;
}
- assert (i == nritems);
+ if (i != nritems)
+ abort ();
muscle_insert_item_number_table ("rhs", rhs, ritem[0], 1, nritems);
muscle_insert_unsigned_int_table ("prhs", prhs, 0, 0, nrules);
muscle_insert_unsigned_int_table ("rline", rline, 0, 0, nrules);
muscle_insert_symbol_number_table ("r1", r1, 0, 0, nrules);
muscle_insert_unsigned_int_table ("r2", r2, 0, 0, nrules);
- muscle_insert_short_table ("dprec", dprec, 0, 0, nrules);
- muscle_insert_short_table ("merger", merger, 0, 0, nrules);
+ muscle_insert_int_table ("dprec", dprec, 0, 0, nrules);
+ muscle_insert_int_table ("merger", merger, 0, 0, nrules);
+
+ MUSCLE_INSERT_INT ("rules_number", nrules);
+ MUSCLE_INSERT_INT ("max_left_semantic_context", max_left_semantic_context);
free (rhs);
free (prhs);
static void
prepare_states (void)
{
- state_number_t i;
- symbol_number_t *values =
- (symbol_number_t *) alloca (sizeof (symbol_number_t) * nstates);
+ state_number i;
+ symbol_number *values = xnmalloc (nstates, sizeof *values);
for (i = 0; i < nstates; ++i)
values[i] = states[i]->accessing_symbol;
muscle_insert_symbol_number_table ("stos", values,
0, 1, nstates);
+ free (values);
+
+ MUSCLE_INSERT_INT ("last", high);
+ MUSCLE_INSERT_INT ("final_state_number", final_state->number);
+ MUSCLE_INSERT_INT ("states_number", nstates);
}
static void
user_actions_output (FILE *out)
{
- rule_number_t r;
+ rule_number r;
fputs ("m4_define([b4_actions], \n[[", out);
for (r = 0; r < nrules; ++r)
{
fprintf (out, " case %d:\n", r + 1);
- if (!no_lines_flag)
- fprintf (out, muscle_find ("linef"),
- rules[r].action_location.first_line,
- quotearg_style (c_quoting_style,
- muscle_find ("filename")));
+ fprintf (out, "]b4_syncline(%d, ",
+ rules[r].action_location.start.line);
+ escaped_output (out, rules[r].action_location.start.file);
+ fprintf (out, ")[\n");
fprintf (out, " %s\n break;\n\n",
rules[r].action);
}
for (n = 1, p = merge_functions; p != NULL; n += 1, p = p->next)
{
if (p->type[0] == '\0')
- fprintf (out, " case %d: yyval = %s (*yy0, *yy1); break;\n",
+ fprintf (out, " case %d: *yy0 = %s (*yy0, *yy1); break;\n",
n, p->name);
else
- fprintf (out, " case %d: yyval.%s = %s (*yy0, *yy1); break;\n",
+ fprintf (out, " case %d: yy0->%s = %s (*yy0, *yy1); break;\n",
n, p->type, p->name);
}
fputs ("]])\n\n", out);
token_definitions_output (FILE *out)
{
int i;
- int first = 1;
+ char const *sep = "";
fputs ("m4_define([b4_tokens], \n[", out);
for (i = 0; i < ntokens; ++i)
{
- symbol_t *symbol = symbols[i];
- int number = symbol->user_token_number;
+ symbol *sym = symbols[i];
+ int number = sym->user_token_number;
/* At this stage, if there are literal aliases, they are part of
SYMBOLS, so we should not find symbols which are the aliases
here. */
- assert (number != USER_NUMBER_ALIAS);
+ if (number == USER_NUMBER_ALIAS)
+ abort ();
/* Skip error token. */
- if (symbol == errtoken)
+ if (sym == errtoken)
continue;
/* If this string has an alias, then it is necessarily the alias
which is to be output. */
- if (symbol->alias)
- symbol = symbol->alias;
+ if (sym->alias)
+ sym = sym->alias;
/* Don't output literal chars or strings (when defined only as a
string). Note that must be done after the alias resolution:
think about `%token 'f' "f"'. */
- if (symbol->tag[0] == '\'' || symbol->tag[0] == '\"')
+ if (sym->tag[0] == '\'' || sym->tag[0] == '\"')
continue;
/* Don't #define nonliteral tokens whose names contain periods
or '$' (as does the default value of the EOF token). */
- if (strchr (symbol->tag, '.') || strchr (symbol->tag, '$'))
+ if (strchr (sym->tag, '.') || strchr (sym->tag, '$'))
continue;
- fprintf (out, "%s[[[%s]], [%d]]",
- first ? "" : ",\n", symbol->tag, number);
-
- first = 0;
+ fprintf (out, "%s[[[%s]], %d]",
+ sep, sym->tag, number);
+ sep = ",\n";
}
fputs ("])\n\n", out);
}
symbol_destructors_output (FILE *out)
{
int i;
- int first = 1;
+ char const *sep = "";
fputs ("m4_define([b4_symbol_destructors], \n[", out);
for (i = 0; i < nsyms; ++i)
if (symbols[i]->destructor)
{
- symbol_t *symbol = symbols[i];
+ symbol *sym = symbols[i];
/* Filename, lineno,
Symbol-name, Symbol-number,
- destructor, typename. */
- fprintf (out, "%s[[[%s]], [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]",
- first ? "" : ",\n",
- infile, symbol->destructor_location.first_line,
- symbol->tag,
- symbol->number,
- symbol->destructor,
- symbol->type_name);
-
- first = 0;
+ destructor, optional typename. */
+ fprintf (out, "%s[", sep);
+ sep = ",\n";
+ escaped_output (out, sym->destructor_location.start.file);
+ fprintf (out, ", %d, ", sym->destructor_location.start.line);
+ escaped_output (out, sym->tag);
+ fprintf (out, ", %d, [[%s]]", sym->number, sym->destructor);
+ if (sym->type_name)
+ fprintf (out, ", [[%s]]", sym->type_name);
+ fputc (']', out);
}
fputs ("])\n\n", out);
}
symbol_printers_output (FILE *out)
{
int i;
- int first = 1;
+ char const *sep = "";
fputs ("m4_define([b4_symbol_printers], \n[", out);
for (i = 0; i < nsyms; ++i)
- if (symbols[i]->destructor)
+ if (symbols[i]->printer)
{
- symbol_t *symbol = symbols[i];
+ symbol *sym = symbols[i];
/* Filename, lineno,
Symbol-name, Symbol-number,
- printer, typename. */
- fprintf (out, "%s[[[%s]], [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]",
- first ? "" : ",\n",
- infile, symbol->printer_location.first_line,
- symbol->tag,
- symbol->number,
- symbol->printer,
- symbol->type_name);
-
- first = 0;
+ printer, optional typename. */
+ fprintf (out, "%s[", sep);
+ sep = ",\n";
+ escaped_output (out, sym->printer_location.start.file);
+ fprintf (out, ", %d, ", sym->printer_location.start.line);
+ escaped_output (out, sym->tag);
+ fprintf (out, ", %d, [[%s]]", sym->number, sym->printer);
+ if (sym->type_name)
+ fprintf (out, ", [[%s]]", sym->type_name);
+ fputc (']', out);
}
fputs ("])\n\n", out);
}
prepare_actions (void)
{
/* Figure out the actions for the specified state, indexed by
- lookahead token type. */
+ look-ahead token type. */
muscle_insert_rule_number_table ("defact", yydefact,
yydefact[0], 1, nstates);
that case. Nevertheless, it seems even better to be able to use
the GLR skeletons even without the non-deterministic tables. */
muscle_insert_unsigned_int_table ("conflict_list_heads", conflict_table,
- conflict_table[0], 1, high+1);
+ conflict_table[0], 1, high + 1);
muscle_insert_unsigned_int_table ("conflicting_rules", conflict_list,
- conflict_list[0], 1, conflict_list_cnt);
+ 0, 1, conflict_list_cnt);
}
\f
FILE *in;
FILE *out;
int filter_fd[2];
- char const *argv[7];
+ char const *argv[6];
pid_t pid;
/* Compute the names of the package data dir and skeleton file.
installation. A faulty installation can cause deadlock, so a
cheap sanity check is worthwhile. */
char const m4sugar[] = "m4sugar/m4sugar.m4";
- char *full_path;
+ char *full_m4sugar;
+ char *full_cm4;
+ char *full_skeleton;
char const *p;
char const *m4 = (p = getenv ("M4")) ? p : M4;
char const *pkgdatadir = (p = getenv ("BISON_PKGDATADIR")) ? p : PKGDATADIR;
size_t pkgdatadirlen = strlen (pkgdatadir);
while (pkgdatadirlen && pkgdatadir[pkgdatadirlen - 1] == '/')
pkgdatadirlen--;
- full_path = xmalloc (pkgdatadirlen + 1
- + (skeleton_size < sizeof m4sugar
- ? sizeof m4sugar : skeleton_size));
- strcpy (full_path, pkgdatadir);
- full_path[pkgdatadirlen] = '/';
- strcpy (full_path + pkgdatadirlen + 1, m4sugar);
- in = fopen (full_path, "r");
- if (! in || fclose (in) != 0)
- error (EXIT_FAILURE, errno, "%s", full_path);
- strcpy (full_path + pkgdatadirlen + 1, skeleton);
+ full_skeleton = xmalloc (pkgdatadirlen + 1
+ + (skeleton_size < sizeof m4sugar
+ ? sizeof m4sugar : skeleton_size));
+ strcpy (full_skeleton, pkgdatadir);
+ full_skeleton[pkgdatadirlen] = '/';
+ strcpy (full_skeleton + pkgdatadirlen + 1, m4sugar);
+ full_m4sugar = xstrdup (full_skeleton);
+ strcpy (full_skeleton + pkgdatadirlen + 1, "c.m4");
+ full_cm4 = xstrdup (full_skeleton);
+ strcpy (full_skeleton + pkgdatadirlen + 1, skeleton);
+ xfclose (xfopen (full_m4sugar, "r"));
/* Create an m4 subprocess connected to us via two pipes. */
if (trace_flag & trace_tools)
- fprintf (stderr, "running: %s -I %s %s - %s\n",
- m4, pkgdatadir, m4sugar, full_path);
+ fprintf (stderr, "running: %s %s - %s %s\n",
+ m4, full_m4sugar, full_cm4, full_skeleton);
argv[0] = m4;
- argv[1] = "-I";
- argv[2] = pkgdatadir;
- argv[3] = m4sugar;
- argv[4] = "-";
- argv[5] = full_path;
- argv[6] = NULL;
+ argv[1] = full_m4sugar;
+ argv[2] = "-";
+ argv[3] = full_cm4;
+ argv[4] = full_skeleton;
+ argv[5] = NULL;
init_subpipe ();
pid = create_subpipe (argv, filter_fd);
- free (full_path);
+ free (full_m4sugar);
+ free (full_cm4);
+ free (full_skeleton);
out = fdopen (filter_fd[0], "w");
if (! out)
- error (EXIT_FAILURE, errno, "fdopen");
+ error (EXIT_FAILURE, get_errno (),
+ "fdopen");
/* Output the definitions of all the muscles. */
-
- /* There are no comments, especially not `#': we do want M4 expansion
- after `#': think of CPP macros! */
- fputs ("m4_changecom()\n", out);
fputs ("m4_init()\n", out);
user_actions_output (out);
fputs ("m4_wrap([m4_divert_pop(0)])\n", out);
fputs ("m4_divert_push(0)dnl\n", out);
- if (ferror (out))
- error (EXIT_FAILURE, 0, "pipe output error");
xfclose (out);
/* Read and process m4's output. */
timevar_push (TV_M4);
in = fdopen (filter_fd[1], "r");
if (! in)
- error (EXIT_FAILURE, errno, "fdopen");
+ error (EXIT_FAILURE, get_errno (),
+ "fdopen");
scan_skel (in);
- if (ferror (in))
- error (EXIT_FAILURE, 0, "pipe input error");
xfclose (in);
reap_subpipe (pid, m4);
timevar_pop (TV_M4);
prepare (void)
{
/* Flags. */
- MUSCLE_INSERT_INT ("locations_flag", locations_flag);
- MUSCLE_INSERT_INT ("defines_flag", defines_flag);
- MUSCLE_INSERT_INT ("error_verbose", error_verbose);
- MUSCLE_INSERT_INT ("pure", pure_parser);
- MUSCLE_INSERT_INT ("debug", debug_flag);
-
- /* FIXME: This is wrong: the muscles should decide whether they hold
- a copy or not, but the situation is too obscure currently. */
+ MUSCLE_INSERT_BOOL ("debug", debug_flag);
+ MUSCLE_INSERT_BOOL ("defines_flag", defines_flag);
+ MUSCLE_INSERT_BOOL ("error_verbose", error_verbose);
+ MUSCLE_INSERT_BOOL ("locations_flag", locations_flag);
+ MUSCLE_INSERT_BOOL ("pure", pure_parser);
+ MUSCLE_INSERT_BOOL ("synclines_flag", !no_lines_flag);
+
+ /* File names. */
MUSCLE_INSERT_STRING ("prefix", spec_name_prefix ? spec_name_prefix : "yy");
- MUSCLE_INSERT_STRING ("output_infix", output_infix ? output_infix : "");
- MUSCLE_INSERT_STRING ("output_prefix", short_base_name);
- MUSCLE_INSERT_STRING ("output_parser_name", parser_file_name);
- MUSCLE_INSERT_STRING ("output_header_name", spec_defines_file);
-
- /* Symbols. */
- MUSCLE_INSERT_INT ("tokens_number", ntokens);
- MUSCLE_INSERT_INT ("nterms_number", nvars);
- MUSCLE_INSERT_INT ("undef_token_number", undeftoken->number);
- MUSCLE_INSERT_INT ("user_token_number_max", max_user_token_number);
-
- /* Rules. */
- MUSCLE_INSERT_INT ("rules_number", nrules);
-
- /* States. */
- MUSCLE_INSERT_INT ("last", high);
- MUSCLE_INSERT_INT ("final_state_number", final_state->number);
- MUSCLE_INSERT_INT ("states_number", nstates);
/* User Code. */
obstack_1grow (&pre_prologue_obstack, 0);
/* Find the right skeleton file. */
if (!skeleton)
{
- if (glr_parser)
+ if (glr_parser || nondeterministic_parser)
skeleton = "glr.c";
else
skeleton = "yacc.c";
}
- /* Parse the skeleton file and output the needed parsers. */
- MUSCLE_INSERT_STRING ("skeleton", skeleton);
+ /* About the skeletons. */
+ {
+ char const *pkgdatadir = getenv ("BISON_PKGDATADIR");
+ MUSCLE_INSERT_STRING ("pkgdatadir", pkgdatadir ? pkgdatadir : PKGDATADIR);
+ MUSCLE_INSERT_C_STRING ("skeleton", skeleton);
+ }
}
{
obstack_init (&format_obstack);
- prepare_tokens ();
+ prepare_symbols ();
prepare_rules ();
prepare_states ();
prepare_actions ();
projects / bison.git / blobdiff