X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/22dda0f00476e140b490979a3894d75ebc45b0cb..24bb5f8fb7f14df4050cbefd27ae60fa9cef259d:/src/symlist.c diff --git a/src/symlist.c b/src/symlist.c index 106db46c..bf47da1e 100644 --- a/src/symlist.c +++ b/src/symlist.c @@ -1,24 +1,24 @@ /* Lists of symbols for Bison - Copyright (C) 2002, 2005 Free Software Foundation, Inc. + Copyright (C) 2002, 2005-2007, 2009-2012 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 + 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 2, or (at your option) - any later version. + 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, + 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., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ + along with this program. If not, see . */ +#include #include "system.h" #include "complain.h" @@ -30,57 +30,130 @@ `--------------------------------------*/ symbol_list * -symbol_list_new (symbol *sym, location loc) +symbol_list_sym_new (symbol *sym, location loc) { symbol_list *res = xmalloc (sizeof *res); - res->next = NULL; - res->sym = sym; - res->location = loc; - res->action = NULL; + + res->content_type = SYMLIST_SYMBOL; + res->content.sym = sym; + res->location = res->sym_loc = loc; + + res->midrule = NULL; + res->midrule_parent_rule = NULL; + res->midrule_parent_rhs_index = 0; + + code_props_none_init (&res->action_props); + res->ruleprec = NULL; res->dprec = 0; res->merger = 0; + + res->named_ref = NULL; + + res->next = NULL; + + return res; +} + + +/*--------------------------------------------. +| Create a list containing TYPE_NAME at LOC. | +`--------------------------------------------*/ + +symbol_list * +symbol_list_type_new (uniqstr type_name, location loc) +{ + symbol_list *res = xmalloc (sizeof *res); + + res->content_type = SYMLIST_TYPE; + res->content.type_name = type_name; + res->location = res->sym_loc = loc; + res->named_ref = NULL; + res->next = NULL; + + return res; +} + + +/*----------------------------------------. +| Create a list containing a <*> at LOC. | +`----------------------------------------*/ + +symbol_list * +symbol_list_default_tagged_new (location loc) +{ + symbol_list *res = xmalloc (sizeof *res); + + res->content_type = SYMLIST_DEFAULT_TAGGED; + res->location = res->sym_loc = loc; + res->named_ref = NULL; + res->next = NULL; + return res; } -/*------------------. -| Print this list. | -`------------------*/ +/*---------------------------------------. +| Create a list containing a <> at LOC. | +`---------------------------------------*/ + +symbol_list * +symbol_list_default_tagless_new (location loc) +{ + symbol_list *res = xmalloc (sizeof *res); + + res->content_type = SYMLIST_DEFAULT_TAGLESS; + res->location = res->sym_loc = loc; + res->named_ref = NULL; + res->next = NULL; + + return res; +} + + +/*-----------------------------------------------------------------------. +| Print this list, for which every content_type must be SYMLIST_SYMBOL. | +`-----------------------------------------------------------------------*/ void -symbol_list_print (symbol_list *l, FILE *f) +symbol_list_syms_print (const symbol_list *l, FILE *f) { - for (/* Nothing. */; l && l->sym; l = l->next) + for (/* Nothing. */; l && l->content.sym; l = l->next) { - symbol_print (l->sym, f); - if (l && l->sym) - fputc (' ', f); + symbol_print (l->content.sym, f); + fprintf (stderr, l->action_props.is_value_used ? " used" : " unused"); + if (l && l->content.sym) + fprintf (f, ", "); } } -/*---------------------------------. -| Prepend SYM at LOC to the LIST. | -`---------------------------------*/ +/*---------------------------. +| Prepend NODE to the LIST. | +`---------------------------*/ symbol_list * -symbol_list_prepend (symbol_list *list, symbol *sym, location loc) +symbol_list_prepend (symbol_list *list, symbol_list *node) { - symbol_list *res = symbol_list_new (sym, loc); - res->next = list; - return res; + node->next = list; + return node; } -/*-------------------------------------------------. -| Free the LIST, but not the symbols it contains. | -`-------------------------------------------------*/ +/*-----------------------------------------------. +| Free the LIST, but not the items it contains. | +`-----------------------------------------------*/ void symbol_list_free (symbol_list *list) { - LIST_FREE (symbol_list, list); + symbol_list *node, *next; + for (node = list; node; node = next) + { + next = node->next; + named_ref_free (node->named_ref); + free (node); + } } @@ -88,44 +161,111 @@ symbol_list_free (symbol_list *list) | Return its length. | `--------------------*/ -unsigned int -symbol_list_length (symbol_list *list) +int +symbol_list_length (symbol_list const *l) { int res = 0; - for (/* Nothing. */; list; list = list->next) + for (/* Nothing. */; + l && !(l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL); + l = l->next) ++res; return res; } +/*------------------------------. +| Get item N in symbol list L. | +`------------------------------*/ + +symbol_list * +symbol_list_n_get (symbol_list *l, int n) +{ + int i; + + if (n < 0) + return NULL; + + for (i = 0; i < n; ++i) + { + l = l->next; + if (l == NULL + || (l->content_type == SYMLIST_SYMBOL && l->content.sym == NULL)) + return NULL; + } + + return l; +} + + /*--------------------------------------------------------------. | Get the data type (alternative in the union) of the value for | -| symbol N in symbol list RP. | +| symbol N in symbol list L. | `--------------------------------------------------------------*/ uniqstr -symbol_list_n_type_name_get (symbol_list *rp, location loc, int n) +symbol_list_n_type_name_get (symbol_list *l, location loc, int n) { - int i; - - if (n < 0) + l = symbol_list_n_get (l, n); + if (!l) { complain_at (loc, _("invalid $ value: $%d"), n); return NULL; } + aver (l->content_type == SYMLIST_SYMBOL); + return l->content.sym->type_name; +} - i = 0; +bool +symbol_list_null (symbol_list *node) +{ + return !node || + (node->content_type == SYMLIST_SYMBOL && !(node->content.sym)); +} - while (i < n) +void +symbol_list_destructor_set (symbol_list *node, char const *code, location loc) +{ + code_props destructor; + code_props_symbol_action_init (&destructor, code, loc); + code_props_translate_code (&destructor); + switch (node->content_type) { - rp = rp->next; - if (rp == NULL || rp->sym == NULL) - { - complain_at (loc, _("invalid $ value: $%d"), n); - return NULL; - } - ++i; + case SYMLIST_SYMBOL: + symbol_destructor_set (node->content.sym, &destructor); + break; + case SYMLIST_TYPE: + semantic_type_destructor_set ( + semantic_type_get (node->content.type_name), &destructor); + break; + case SYMLIST_DEFAULT_TAGGED: + default_tagged_destructor_set (&destructor); + break; + case SYMLIST_DEFAULT_TAGLESS: + default_tagless_destructor_set (&destructor); + break; } +} - return rp->sym->type_name; +void +symbol_list_printer_set (symbol_list *node, char const *code, location loc) +{ + code_props printer; + code_props_symbol_action_init (&printer, code, loc); + code_props_translate_code (&printer); + switch (node->content_type) + { + case SYMLIST_SYMBOL: + symbol_printer_set (node->content.sym, &printer); + break; + case SYMLIST_TYPE: + semantic_type_printer_set ( + semantic_type_get (node->content.type_name), &printer); + break; + case SYMLIST_DEFAULT_TAGGED: + default_tagged_printer_set (&printer); + break; + case SYMLIST_DEFAULT_TAGLESS: + default_tagless_printer_set (&printer); + break; + } }