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make_symbol provides a means to construct a full symbol (kind, value, location) in a single shot. It is meant to be a Symbol constructor, parameterized by the symbol kind so that overloading would prevent incorrect kind/value pairs. Unfortunately parameterized constructors do not work well in C++ (unless the parameter also appears as an argument, which is not acceptable), hence the use of a function instead of a constructor. * data/lalr1.cc (b4_symbol_constructor_declaration_) (b4_symbol_constructor_declarations) (b4_symbol_constructor_specialization_) (b4_symbol_constructor_specializations) (b4_symbol_constructor_definition_) (b4_symbol_constructor_definitions): New. Use them where appropriate to generate declaration, declaration of the specializations, and implementations of the templated overloaded function "make_symbol". (variant::variant): Always define a default ctor. Also provide a copy ctor. (symbol_base_type, symbol_type): New ctor overloads for value-less symbols. (symbol_type): Now public, so that functions such as yylex can use it.
-*- outline -*- This directory contains Bison skeletons: the general shapes of the different parser kinds, that are specialized for specific grammars by the bison program. Currently, there are only three supported skeletons: - yacc.c It used to be named bison.simple: it corresponds to C Yacc compatible LALR(1) parsers. - lalr1.cc Produces a C++ parser class. It is still very experimental, and not yet supported. Please, subscribe to bison-patches@gnu.org. - glr.c A Generalized LR C parser based on Bison's LALR(1) tables. These skeletons are the only ones supported by the Bison team. Because the interface between skeletons and the bison program is not finished, *we are not bound to it*. In particular, Bison is not mature enough for us to consider that ``foreign skeletons'' are supported. ----- Copyright (C) 2002 Free Software Foundation, Inc. This file is part of GNU Bison. 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. 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 this program. If not, see <http://www.gnu.org/licenses/>.