X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/eecf08fe9428bfdc6b2986eab476807053bfe6b4..9ca7f077a0a5ecdd00c5945c7a7bd3cf46e23c13:/src/output.c diff --git a/src/output.c b/src/output.c index d2fe981f..1a1d7b3a 100644 --- a/src/output.c +++ b/src/output.c @@ -1,28 +1,27 @@ /* Output the generated parsing program for Bison. - Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003 - Free Software Foundation, Inc. + Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004, + 2005, 2006, 2007 Free Software Foundation, Inc. This file is part of Bison, the GNU Compiler Compiler. - Bison is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. - Bison is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. 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. */ - + along with this program. If not, see . */ +#include #include "system.h" +#include #include #include #include @@ -36,18 +35,14 @@ #include "muscle_tab.h" #include "output.h" #include "reader.h" +#include "scan-code.h" /* max_left_semantic_context */ +#include "scan-skel.h" #include "symtab.h" #include "tables.h" -/* From src/scan-skel.l. */ -void scan_skel (FILE *); - static struct obstack format_obstack; -bool error_verbose = false; - - /*-------------------------------------------------------------------. | Create a function NAME which associates to the muscle NAME the | @@ -60,7 +55,7 @@ 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, \ @@ -106,7 +101,6 @@ Name (const char *name, \ 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_number) GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_rule_number_table, rule_number) GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_symbol_number_table, symbol_number) @@ -114,17 +108,17 @@ GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_item_number_table, item_number) GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_state_number_table, state_number) -/*----------------------------------------------------------------------. -| Print to OUT a representation of FILENAME escaped both for C and M4. | -`----------------------------------------------------------------------*/ +/*--------------------------------------------------------------------. +| Print to OUT a representation of STRING escaped both for C and M4. | +`--------------------------------------------------------------------*/ static void -escaped_file_name_output (FILE *out, char const *filename) +escaped_output (FILE *out, char const *string) { char const *p; fprintf (out, "[["); - for (p = quotearg_style (c_quoting_style, filename); *p; p++) + for (p = quotearg_style (c_quoting_style, string); *p; p++) switch (*p) { case '$': fputs ("$][", out); break; @@ -146,6 +140,7 @@ escaped_file_name_output (FILE *out, char const *filename) 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); @@ -163,7 +158,7 @@ prepare_symbols (void) int j = 2; for (i = 0; i < nsyms; i++) { - const char *cp = quotearg_style (c_quoting_style, symbols[i]->tag); + 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; @@ -180,9 +175,7 @@ prepare_symbols (void) 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, " ]b4_null["); /* Finish table and store. */ obstack_1grow (&format_obstack, 0); @@ -192,7 +185,7 @@ prepare_symbols (void) /* Output YYTOKNUM. */ { int i; - int *values = MALLOC (values, 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, @@ -212,13 +205,13 @@ prepare_rules (void) { rule_number r; unsigned int i = 0; - item_number *rhs = MALLOC (rhs, nritems); - unsigned int *prhs = MALLOC (prhs, nrules); - unsigned int *rline = MALLOC (rline, nrules); - symbol_number *r1 = MALLOC (r1, nrules); - unsigned int *r2 = MALLOC (r2, nrules); - short *dprec = MALLOC (dprec, nrules); - short *merger = MALLOC (merger, 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) { @@ -241,16 +234,15 @@ prepare_rules (void) /* Merger-function index (GLR). */ merger[r] = rules[r].merger; } - if (i != nritems) - abort (); + aver (i == nritems); 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); @@ -272,7 +264,7 @@ static void prepare_states (void) { state_number i; - symbol_number *values = MALLOC (values, nstates); + 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, @@ -295,20 +287,16 @@ user_actions_output (FILE *out) { rule_number r; - fputs ("m4_define([b4_actions], \n[[", out); + fputs ("m4_define([b4_actions], \n[", out); for (r = 0; r < nrules; ++r) if (rules[r].action) { - fprintf (out, " case %d:\n", r + 1); - - fprintf (out, "]b4_syncline([[%d]], ", + fprintf (out, "b4_case(%d, [b4_syncline(%d, ", r + 1, rules[r].action_location.start.line); - escaped_file_name_output (out, rules[r].action_location.start.file); - fprintf (out, ")[\n"); - fprintf (out, " %s\n break;\n\n", - rules[r].action); + escaped_output (out, rules[r].action_location.start.file); + fprintf (out, ")\n[ %s]])\n\n", rules[r].action); } - fputs ("]])\n\n", out); + fputs ("])\n\n", out); } /*--------------------------------------. @@ -353,8 +341,7 @@ token_definitions_output (FILE *out) /* At this stage, if there are literal aliases, they are part of SYMBOLS, so we should not find symbols which are the aliases here. */ - if (number == USER_NUMBER_ALIAS) - abort (); + aver (number != USER_NUMBER_ALIAS); /* Skip error token. */ if (sym == errtoken) @@ -376,7 +363,7 @@ token_definitions_output (FILE *out) if (strchr (sym->tag, '.') || strchr (sym->tag, '$')) continue; - fprintf (out, "%s[[[%s]], [%d]]", + fprintf (out, "%s[[[%s]], %d]", sep, sym->tag, number); sep = ",\n"; } @@ -384,68 +371,41 @@ token_definitions_output (FILE *out) } -/*---------------------------------------. -| Output the symbol destructors to OUT. | -`---------------------------------------*/ - -static void -symbol_destructors_output (FILE *out) -{ - int i; - char const *sep = ""; - - fputs ("m4_define([b4_symbol_destructors], \n[", out); - for (i = 0; i < nsyms; ++i) - if (symbols[i]->destructor) - { - symbol *sym = symbols[i]; - - /* Filename, lineno, - Symbol-name, Symbol-number, - destructor, typename. */ - fprintf (out, "%s[", sep); - sep = ",\n"; - escaped_file_name_output (out, sym->destructor_location.start.file); - fprintf (out, ", [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]", - sym->destructor_location.start.line, - sym->tag, - sym->number, - sym->destructor, - sym->type_name); - } - fputs ("])\n\n", out); -} - - -/*------------------------------------. -| Output the symbol printers to OUT. | -`------------------------------------*/ +/*---------------------------------------------------. +| Output the symbol destructors or printers to OUT. | +`---------------------------------------------------*/ static void -symbol_printers_output (FILE *out) +symbol_code_props_output (FILE *out, char const *what, + code_props const *(*get)(symbol const *)) { int i; char const *sep = ""; - fputs ("m4_define([b4_symbol_printers], \n[", out); + fputs ("m4_define([b4_symbol_", out); + fputs (what, out); + fputs ("], \n[", out); for (i = 0; i < nsyms; ++i) - if (symbols[i]->printer) - { - symbol *sym = symbols[i]; - - /* Filename, lineno, - Symbol-name, Symbol-number, - printer, typename. */ - fprintf (out, "%s[", sep); - sep = ",\n"; - escaped_file_name_output (out, sym->printer_location.start.file); - fprintf (out, ", [[%d]], [[%s]], [[%d]], [[%s]], [[%s]]]", - sym->printer_location.start.line, - sym->tag, - sym->number, - sym->printer, - sym->type_name); - } + { + symbol *sym = symbols[i]; + char const *code = (*get) (sym)->code; + if (code) + { + location loc = (*get) (sym)->location; + /* Filename, lineno, + Symbol-name, Symbol-number, + code, optional typename. */ + fprintf (out, "%s[", sep); + sep = ",\n"; + escaped_output (out, loc.start.file); + fprintf (out, ", %d, ", loc.start.line); + escaped_output (out, sym->tag); + fprintf (out, ", %d, [[%s]]", sym->number, code); + if (sym->type_name) + fprintf (out, ", [[%s]]", sym->type_name); + fputc (']', out); + } + } fputs ("])\n\n", out); } @@ -494,7 +454,7 @@ prepare_actions (void) muscle_insert_unsigned_int_table ("conflict_list_heads", conflict_table, 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); } @@ -508,7 +468,7 @@ output_skeleton (void) FILE *in; FILE *out; int filter_fd[2]; - char const *argv[6]; + char const *argv[7]; pid_t pid; /* Compute the names of the package data dir and skeleton file. @@ -516,12 +476,13 @@ output_skeleton (void) installation. A faulty installation can cause deadlock, so a cheap sanity check is worthwhile. */ char const m4sugar[] = "m4sugar/m4sugar.m4"; + char const m4bison[] = "bison.m4"; char *full_m4sugar; - char *full_cm4; + char *full_m4bison; char *full_skeleton; char const *p; char const *m4 = (p = getenv ("M4")) ? p : M4; - char const *pkgdatadir = (p = getenv ("BISON_PKGDATADIR")) ? p : PKGDATADIR; + char const *pkgdatadir = compute_pkgdatadir (); size_t skeleton_size = strlen (skeleton) + 1; size_t pkgdatadirlen = strlen (pkgdatadir); while (pkgdatadirlen && pkgdatadir[pkgdatadirlen - 1] == '/') @@ -529,37 +490,42 @@ output_skeleton (void) full_skeleton = xmalloc (pkgdatadirlen + 1 + (skeleton_size < sizeof m4sugar ? sizeof m4sugar : skeleton_size)); - strcpy (full_skeleton, pkgdatadir); + strncpy (full_skeleton, pkgdatadir, pkgdatadirlen); 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); + strcpy (full_skeleton + pkgdatadirlen + 1, m4bison); + full_m4bison = xstrdup (full_skeleton); + if (strchr (skeleton, '/')) + strcpy (full_skeleton, skeleton); + else + 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 %s - %s %s\n", - m4, full_m4sugar, full_cm4, full_skeleton); + m4, full_m4sugar, full_m4bison, full_skeleton); argv[0] = m4; argv[1] = full_m4sugar; argv[2] = "-"; - argv[3] = full_cm4; + argv[3] = full_m4bison; argv[4] = full_skeleton; - argv[5] = NULL; + argv[5] = trace_flag & trace_m4 ? "-dV" : NULL; + argv[6] = NULL; init_subpipe (); pid = create_subpipe (argv, filter_fd); + free (full_m4bison); free (full_m4sugar); - free (full_cm4); free (full_skeleton); out = fdopen (filter_fd[0], "w"); if (! out) - error (EXIT_FAILURE, get_errno (), "fdopen"); + error (EXIT_FAILURE, get_errno (), + "fdopen"); /* Output the definitions of all the muscles. */ fputs ("m4_init()\n", out); @@ -567,20 +533,19 @@ output_skeleton (void) user_actions_output (out); merger_output (out); token_definitions_output (out); - symbol_destructors_output (out); - symbol_printers_output (out); + symbol_code_props_output (out, "destructors", &symbol_destructor_get); + symbol_code_props_output (out, "printers", &symbol_printer_get); muscles_m4_output (out); - - fputs ("m4_wrap([m4_divert_pop(0)])\n", out); - fputs ("m4_divert_push(0)dnl\n", out); xfclose (out); /* Read and process m4's output. */ timevar_push (TV_M4); + end_of_output_subpipe (pid, filter_fd); in = fdopen (filter_fd[1], "r"); if (! in) - error (EXIT_FAILURE, get_errno (), "fdopen"); + error (EXIT_FAILURE, get_errno (), + "fdopen"); scan_skel (in); xfclose (in); reap_subpipe (pid, m4); @@ -590,34 +555,57 @@ output_skeleton (void) static void prepare (void) { + /* BISON_USE_PUSH_FOR_PULL is for the test suite and should not be documented + for the user. */ + char const *use_push_for_pull_env = getenv ("BISON_USE_PUSH_FOR_PULL"); + bool use_push_for_pull_flag = false; + if (use_push_for_pull_env != NULL + && use_push_for_pull_env[0] != '\0' + && 0 != strcmp (use_push_for_pull_env, "0")) + use_push_for_pull_flag = true; + /* Flags. */ - MUSCLE_INSERT_BOOL ("debug", debug_flag); + MUSCLE_INSERT_BOOL ("debug_flag", debug_flag); MUSCLE_INSERT_BOOL ("defines_flag", defines_flag); - MUSCLE_INSERT_BOOL ("error_verbose", error_verbose); + MUSCLE_INSERT_BOOL ("error_verbose_flag", error_verbose); + MUSCLE_INSERT_BOOL ("glr_flag", glr_parser); MUSCLE_INSERT_BOOL ("locations_flag", locations_flag); - MUSCLE_INSERT_BOOL ("pure", pure_parser); + MUSCLE_INSERT_BOOL ("nondeterministic_flag", nondeterministic_parser); MUSCLE_INSERT_BOOL ("synclines_flag", !no_lines_flag); + MUSCLE_INSERT_BOOL ("tag_seen_flag", tag_seen); + MUSCLE_INSERT_BOOL ("use_push_for_pull_flag", use_push_for_pull_flag); + MUSCLE_INSERT_BOOL ("yacc_flag", yacc_flag); /* File names. */ - MUSCLE_INSERT_STRING ("prefix", spec_name_prefix ? spec_name_prefix : "yy"); - - /* User Code. */ - 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 (glr_parser || nondeterministic_parser) - skeleton = "glr.c"; - else - skeleton = "yacc.c"; - } - - /* Parse the skeleton file and output the needed parsers. */ - MUSCLE_INSERT_C_STRING ("skeleton", skeleton); + if (spec_name_prefix) + MUSCLE_INSERT_STRING ("prefix", spec_name_prefix); + + MUSCLE_INSERT_STRING ("file_name_all_but_ext", all_but_ext); + +#define DEFINE(Name) MUSCLE_INSERT_STRING (#Name, Name ? Name : "") + DEFINE (dir_prefix); + DEFINE (parser_file_name); + DEFINE (spec_defines_file); + DEFINE (spec_file_prefix); + DEFINE (spec_graph_file); + DEFINE (spec_name_prefix); + DEFINE (spec_outfile); + DEFINE (spec_verbose_file); +#undef DEFINE + + /* Find the right skeleton file, and add muscles about the skeletons. */ + if (skeleton) + MUSCLE_INSERT_C_STRING ("skeleton", skeleton); + else + skeleton = language->skeleton; + + /* About the skeletons. */ + { + /* b4_pkgdatadir is used inside m4_include in the skeletons, so digraphs + would never be expanded. Hopefully no one has M4-special characters in + his Bison installation path. */ + MUSCLE_INSERT_STRING_RAW ("pkgdatadir", compute_pkgdatadir ()); + } } @@ -641,6 +629,11 @@ output (void) output_skeleton (); obstack_free (&format_obstack, NULL); - obstack_free (&pre_prologue_obstack, NULL); - obstack_free (&post_prologue_obstack, NULL); +} + +char const * +compute_pkgdatadir (void) +{ + char const *pkgdatadir = getenv ("BISON_PKGDATADIR"); + return pkgdatadir ? pkgdatadir : PKGDATADIR; }