X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/39912f52635a7b7709b6a890a41e066340a89111..55f0c7b1f26afabb7f356343f2650626e09fce51:/src/output.c?ds=sidebyside diff --git a/src/output.c b/src/output.c index 1edf854f..5b12f728 100644 --- a/src/output.c +++ b/src/output.c @@ -1,5 +1,6 @@ -/* 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. @@ -16,31 +17,33 @@ 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 +#include +#include +#include +#include + +#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; @@ -55,7 +58,7 @@ int error_verbose = 0; #define GENERATE_MUSCLE_INSERT_TABLE(Name, Type) \ \ static void \ -Name (const char *name, \ +Name (char const *name, \ Type *table_data, \ Type first, \ int begin, \ @@ -63,6 +66,8 @@ Name (const char *name, \ { \ Type min = first; \ Type max = first; \ + long int lmin; \ + long int lmax; \ int i; \ int j = 1; \ \ @@ -86,25 +91,48 @@ Name (const char *name, \ 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) + + +/*--------------------------------------------------------------------. +| Print to OUT a representation of STRING escaped both for C and M4. | +`--------------------------------------------------------------------*/ + +static 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, "]]"); +} /*------------------------------------------------------------------. @@ -115,6 +143,7 @@ GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_state_number_table, state_number_t) 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); @@ -128,31 +157,30 @@ prepare_symbols (void) /* 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); @@ -162,7 +190,7 @@ prepare_symbols (void) /* 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, @@ -174,25 +202,25 @@ prepare_symbols (void) /*-------------------------------------------------------------. | 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. */ @@ -205,23 +233,25 @@ prepare_rules (void) /* 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); @@ -239,13 +269,13 @@ prepare_rules (void) 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); @@ -261,7 +291,7 @@ prepare_states (void) 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) @@ -269,11 +299,10 @@ user_actions_output (FILE *out) { 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); } @@ -294,10 +323,10 @@ merger_output (FILE *out) 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); @@ -311,43 +340,43 @@ static void 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); } @@ -361,26 +390,26 @@ static void 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); } @@ -394,26 +423,26 @@ static void 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); } @@ -423,7 +452,7 @@ static void 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); @@ -463,7 +492,7 @@ 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); } @@ -477,7 +506,7 @@ output_skeleton (void) 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. @@ -485,7 +514,9 @@ output_skeleton (void) 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; @@ -493,44 +524,43 @@ output_skeleton (void) 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); @@ -543,18 +573,15 @@ output_skeleton (void) 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); @@ -564,19 +591,15 @@ static void 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); /* User Code. */ obstack_1grow (&pre_prologue_obstack, 0); @@ -587,14 +610,18 @@ prepare (void) /* 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); + } }