X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/d67c52e8527291fd7d4dcc78c364b3dba84a2f14..11c073b7e53fb82c67f1adf8cd7c2e60b7518729:/src/output.c diff --git a/src/output.c b/src/output.c index 585b90e0..906301e2 100644 --- a/src/output.c +++ b/src/output.c @@ -104,7 +104,6 @@ GENERATE_MUSCLE_INSERT_TABLE(muscle_insert_int_table, int) 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) @@ -143,6 +142,7 @@ 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 ("symbols_number", nsyms); MUSCLE_INSERT_INT ("undef_token_number", undeftoken->number); MUSCLE_INSERT_INT ("user_token_number_max", max_user_token_number); @@ -200,38 +200,27 @@ prepare_symbols (void) } -/*-------------------------------------------------------------. -| Prepare the muscles related to the rules: rhs, prhs, r1, r2, | -| rline, dprec, merger. | -`-------------------------------------------------------------*/ +/*----------------------------------------------------------------. +| Prepare the muscles related to the rules: r1, r2, rline, dprec, | +| merger. | +`----------------------------------------------------------------*/ static void prepare_rules (void) { - rule_number r; - unsigned int i = 0; - 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); + rule_number r; for (r = 0; r < nrules; ++r) { - item_number *rhsp = NULL; - /* Index of rule R in RHS. */ - prhs[r] = i; - /* RHS of the rule R. */ - for (rhsp = rules[r].rhs; *rhsp >= 0; ++rhsp) - rhs[i++] = *rhsp; /* LHS of the rule R. */ r1[r] = rules[r].lhs->number; /* Length of rule R's RHS. */ - r2[r] = i - prhs[r]; - /* Separator in RHS. */ - rhs[i++] = -1; + r2[r] = rule_rhs_length(&rules[r]); /* Line where rule was defined. */ rline[r] = rules[r].location.start.line; /* Dynamic precedence (GLR). */ @@ -239,10 +228,7 @@ prepare_rules (void) /* Merger-function index (GLR). */ merger[r] = rules[r].merger; } - 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); @@ -252,8 +238,6 @@ prepare_rules (void) MUSCLE_INSERT_INT ("rules_number", nrules); MUSCLE_INSERT_INT ("max_left_semantic_context", max_left_semantic_context); - free (rhs); - free (prhs); free (rline); free (r1); free (r2); @@ -282,6 +266,73 @@ prepare_states (void) } +/*-------------------------------------------------------. +| Compare two symbols by type-name, and then by number. | +`-------------------------------------------------------*/ + +static int +symbol_type_name_cmp (const symbol **lhs, const symbol **rhs) +{ + int res = UNIQSTR_CMP((*lhs)->type_name, (*rhs)->type_name); + if (res) + return res; + return (*lhs)->number - (*rhs)->number; +} + + +/*----------------------------------------------------------------. +| Return a (malloc'ed) table of the symbols sorted by type-name. | +`----------------------------------------------------------------*/ + +static symbol ** +symbols_by_type_name (void) +{ + typedef int (*qcmp_type) (const void *, const void *); + symbol **res = xmemdup (symbols, nsyms * sizeof *res); + qsort (res, nsyms, sizeof *res, (qcmp_type) &symbol_type_name_cmp); + return res; +} + + +/*------------------------------------------------------------------. +| Define b4_type_names, which is a list of (lists of the numbers of | +| symbols with same type-name). | +`------------------------------------------------------------------*/ + +static void +type_names_output (FILE *out) +{ + int i; + symbol **syms = symbols_by_type_name (); + fputs ("m4_define([b4_type_names],\n[", out); + for (i = 0; i < nsyms; /* nothing */) + { + // The index of the first symbol of the current type-name. + int i0 = i; + fputs (i ? ",\n[" : "[", out); + for (; i < nsyms && syms[i]->type_name == syms[i0]->type_name; ++i) + fprintf (out, "%s%d", i != i0 ? ", " : "", syms[i]->number); + fputs ("]", out); + } + fputs ("])\n\n", out); + free (syms); +} + + +/*-------------------------------------. +| The list of all the symbol numbers. | +`-------------------------------------*/ + +static void +symbol_numbers_output (FILE *out) +{ + int i; + fputs ("m4_define([b4_symbol_numbers],\n[", out); + for (i = 0; i < nsyms; ++i) + fprintf (out, "%s[%d]", i ? ", " : "", i); + fputs ("])\n\n", out); +} + /*---------------------------------. | Output the user actions to OUT. | @@ -304,9 +355,9 @@ user_actions_output (FILE *out) fputs ("])\n\n", out); } -/*--------------------------------------. -| Output the merge functions to OUT. | -`--------------------------------------*/ +/*------------------------------------. +| Output the merge functions to OUT. | +`------------------------------------*/ static void merger_output (FILE *out) @@ -327,6 +378,82 @@ merger_output (FILE *out) fputs ("]])\n\n", out); } + +/*---------------------------------------------. +| Prepare the muscles for symbol definitions. | +`---------------------------------------------*/ + +static void +prepare_symbol_definitions (void) +{ + int i; + for (i = 0; i < nsyms; ++i) + { + symbol *sym = symbols[i]; + const char *key; + const char *value; + +#define SET_KEY(Entry) \ + obstack_fgrow2 (&format_obstack, "symbol(%d, %s)", i, Entry); \ + obstack_1grow (&format_obstack, 0); \ + key = obstack_finish (&format_obstack); + + // Whether the symbol has an identifier. + value = symbol_id_get (sym); + SET_KEY("has_id"); + MUSCLE_INSERT_INT (key, !!value); + + // Its identifier. + SET_KEY("id"); + MUSCLE_INSERT_STRING (key, value ? value : ""); + + // Its tag. Typically for documentation purpose. + SET_KEY("tag"); + MUSCLE_INSERT_STRING (key, sym->tag); + + SET_KEY("user_number"); + MUSCLE_INSERT_INT (key, sym->user_token_number); + + SET_KEY("is_token"); + MUSCLE_INSERT_INT (key, + i < ntokens && sym != errtoken && sym != undeftoken); + + SET_KEY("number"); + MUSCLE_INSERT_INT (key, sym->number); + + SET_KEY("has_type"); + MUSCLE_INSERT_INT (key, !!sym->type_name); + + SET_KEY("type"); + MUSCLE_INSERT_STRING (key, sym->type_name ? sym->type_name : ""); + +#define CODE_PROP(PropName) \ + do { \ + code_props const *p = symbol_ ## PropName ## _get (sym); \ + SET_KEY("has_" #PropName); \ + MUSCLE_INSERT_INT (key, !!p->code); \ + \ + if (p->code) \ + { \ + SET_KEY(#PropName "_file"); \ + MUSCLE_INSERT_STRING (key, p->location.start.file); \ + \ + SET_KEY(#PropName "_line"); \ + MUSCLE_INSERT_INT (key, p->location.start.line); \ + \ + SET_KEY(#PropName); \ + MUSCLE_INSERT_STRING_RAW (key, p->code); \ + } \ + } while (0) + + CODE_PROP(destructor); + CODE_PROP(printer); +#undef CODE_PROP +#undef SET_KEY + } +} + + /*--------------------------------------. | Output the tokens definition to OUT. | `--------------------------------------*/ @@ -376,45 +503,6 @@ token_definitions_output (FILE *out) } -/*---------------------------------------------------. -| Output the symbol destructors or printers to OUT. | -`---------------------------------------------------*/ - -static void -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_", out); - fputs (what, out); - fputs ("], \n[", out); - for (i = 0; i < nsyms; ++i) - { - 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); -} - - static void prepare_actions (void) { @@ -462,6 +550,23 @@ prepare_actions (void) 0, 1, conflict_list_cnt); } + +/*--------------------------------------------. +| Output the definitions of all the muscles. | +`--------------------------------------------*/ + +static void +muscles_output (FILE *out) +{ + fputs ("m4_init()\n", out); + merger_output (out); + symbol_numbers_output (out); + token_definitions_output (out); + type_names_output (out); + user_actions_output (out); + // Must be last. + muscles_m4_output (out); +} /*---------------------------. | Call the skeleton parser. | @@ -471,7 +576,6 @@ static void output_skeleton (void) { FILE *in; - FILE *out; int filter_fd[2]; char const *argv[9]; pid_t pid; @@ -559,22 +663,16 @@ output_skeleton (void) free (full_m4bison); free (full_skeleton); - out = fdopen (filter_fd[0], "w"); - if (! out) - error (EXIT_FAILURE, get_errno (), - "fdopen"); - - /* Output the definitions of all the muscles. */ - fputs ("m4_init()\n", out); - - user_actions_output (out); - merger_output (out); - token_definitions_output (out); - symbol_code_props_output (out, "destructors", &symbol_destructor_get); - symbol_code_props_output (out, "printers", &symbol_printer_get); - - muscles_m4_output (out); - xfclose (out); + if (trace_flag & trace_muscles) + muscles_output (stderr); + { + FILE *out = fdopen (filter_fd[0], "w"); + if (! out) + error (EXIT_FAILURE, get_errno (), + "fdopen"); + muscles_output (out); + xfclose (out); + } /* Read and process m4's output. */ timevar_push (TV_M4); @@ -659,6 +757,7 @@ output (void) prepare_rules (); prepare_states (); prepare_actions (); + prepare_symbol_definitions (); prepare ();