X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/b0f4c4eaa1da1437b18d5d8e250d666133225d8a..22b081deb7ab1d0ec7a279e5213fa7fdc2c85207:/src/symlist.h diff --git a/src/symlist.h b/src/symlist.h index 9da8afe5..3b03713b 100644 --- a/src/symlist.h +++ b/src/symlist.h @@ -1,49 +1,58 @@ /* Lists of symbols for Bison - Copyright (C) 2002, 2005, 2006 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 <http://www.gnu.org/licenses/>. */ #ifndef SYMLIST_H_ # define SYMLIST_H_ # include "location.h" +# include "scan-code.h" # include "symtab.h" +# include "named-ref.h" /* A list of symbols, used during the parsing to store the rules. */ typedef struct symbol_list { /** * Whether this node contains a symbol, a semantic type, a \c <*>, or a - * \c <!>. + * \c <>. */ enum { SYMLIST_SYMBOL, SYMLIST_TYPE, SYMLIST_DEFAULT_TAGGED, SYMLIST_DEFAULT_TAGLESS } content_type; union { - /** The symbol or \c NULL iff <tt>node_type = SYMLIST_SYMBOL</tt>. */ + /** + * The symbol or \c NULL iff + * <tt>symbol_list::content_type = SYMLIST_SYMBOL</tt>. + */ symbol *sym; - /** The semantic type iff <tt>node_type = SYMLIST_TYPE</tt>. */ - uniqstr type_name; + /** + * The semantic type iff <tt>symbol_list::content_type = SYMLIST_TYPE</tt>. + */ + semantic_type *sem_type; } content; location location; + /* Proper location of the symbol, not all the rule */ + location sym_loc; + /* If this symbol is the generated lhs for a midrule but this is the rule in whose rhs it appears, MIDRULE = a pointer to that midrule. */ struct symbol_list *midrule; @@ -55,12 +64,9 @@ typedef struct symbol_list struct symbol_list *midrule_parent_rule; int midrule_parent_rhs_index; - /* The action is attached to the LHS of a rule. */ - const char *action; - location action_location; - - /* Whether this symbol's value is used in the current action. */ - bool used; + /* The action is attached to the LHS of a rule, but action properties for + * each RHS are also stored here. */ + code_props action_props; /* Precedence/associativity. */ symbol *ruleprec; @@ -68,6 +74,9 @@ typedef struct symbol_list int merger; location merger_declaration_location; + /* Named reference. */ + named_ref *named_ref; + /* The list. */ struct symbol_list *next; } symbol_list; @@ -81,7 +90,7 @@ symbol_list *symbol_list_type_new (uniqstr type_name, location loc); /** Create a list containing a \c <*> at \c loc. */ symbol_list *symbol_list_default_tagged_new (location loc); -/** Create a list containing a \c <!> at \c loc. */ +/** Create a list containing a \c <> at \c loc. */ symbol_list *symbol_list_default_tagless_new (location loc); /** Print this list. @@ -106,15 +115,12 @@ symbol_list *symbol_list_n_get (symbol_list *l, int n); symbol N in rule RULE. */ uniqstr symbol_list_n_type_name_get (symbol_list *l, location loc, int n); -/** The item \c n in symbol list \c l is \c used. */ -void symbol_list_n_used_set (symbol_list *l, int n, bool used); - -/** Set the \c \%destructor for \c node as \c destructor at \c loc. */ -void symbol_list_destructor_set (symbol_list *node, const char *destructor, - location loc); +/* Check whether the node is a border element of a rule. */ +bool symbol_list_null (symbol_list *node); -/** Set the \c \%printer for \c node as \c printer at \c loc. */ -void symbol_list_printer_set (symbol_list *node, const char *printer, - location loc); +/** Set the \c \%destructor or \c \%printer for \c node as \c code at + \c loc. */ +void symbol_list_code_props_set (symbol_list *node, code_props_type kind, + location loc, char const *code); #endif /* !SYMLIST_H_ */