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119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
// Filename: cppBisonDefs.h
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// Created by: drose (17Jan99)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef CPPBISON_H
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#define CPPBISON_H
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// This header file defines the interface to the yacc (actually,
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// bison) parser and grammar. None of these interfaces are intended
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// to be used directly; they're defined here strictly to be used by
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// the CPPParser and CPPExpressionParser classes.
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#include <dtoolbase.h>
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#include <string>
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#include "cppExtensionType.h"
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#include "cppFile.h"
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using namespace std;
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class CPPParser;
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class CPPExpression;
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class CPPPreprocessor;
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class CPPDeclaration;
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class CPPInstance;
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class CPPType;
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class CPPStructType;
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class CPPEnumType;
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class CPPSimpleType;
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class CPPInstanceIdentifier;
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class CPPParameterList;
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class CPPTemplateParameterList;
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class CPPScope;
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class CPPIdentifier;
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void parse_cpp(CPPParser *cp);
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CPPExpression *parse_const_expr(CPPPreprocessor *pp,
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CPPScope *new_current_scope,
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CPPScope *new_global_scope);
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CPPType *parse_type(CPPPreprocessor *pp,
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CPPScope *new_current_scope,
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CPPScope *new_global_scope);
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extern CPPScope *current_scope;
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extern CPPScope *global_scope;
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extern CPPPreprocessor *current_lexer;
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// This structure holds the return value for each token.
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// Traditionally, this is a union, and is declared with the %union
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// declaration in the parser.y file, but unions are pretty worthless
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// in C++ (you can't include an object that has member functions in a
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// union), so we'll use a class instead. That means we need to
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// declare it externally, here.
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class cppyystype {
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public:
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string str;
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union {
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int integer;
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double real;
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CPPScope *scope;
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CPPDeclaration *decl;
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CPPInstance *instance;
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CPPType *type;
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CPPStructType *struct_type;
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CPPEnumType *enum_type;
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CPPSimpleType *simple_type;
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CPPInstanceIdentifier *inst_ident;
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CPPParameterList *param_list;
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CPPTemplateParameterList *template_param_list;
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CPPExtensionType::Type extension_enum;
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CPPExpression *expr;
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CPPIdentifier *identifier;
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} u;
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};
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#define YYSTYPE cppyystype
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// This structure takes advantage of a bison feature to track the
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// exact location in the file of each token, for more useful error
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// reporting. We define it up here so we can reference it in the
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// lexer.
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struct cppyyltype {
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int first_line;
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int first_column;
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int last_line;
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int last_column;
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CPPFile file;
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};
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#define YYLTYPE cppyyltype
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// Beginning around bison 1.35 or so, we need to define this macro as
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// well, to tell bison how to collect multiple locations together.
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// (The default implementation copies only first_line through
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// last_column, whereas here we use the struct assignment operator to
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// copy all the members of the structure).
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#define YYLLOC_DEFAULT(Current, Rhs, N) \
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Current = Rhs[1]; \
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Current.last_line = Rhs[N].last_line; \
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Current.last_column = Rhs[N].last_column;
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#endif
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