/* * The contents of this file are subject to the Mozilla Public License * Version 1.0 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * The Initial Developer of this code is David Baum. * Portions created by David Baum are Copyright (C) 1999 David Baum. * All Rights Reserved. * * Portions created by John Hansen are Copyright (C) 2005 John Hansen. * All Rights Reserved. * */ #ifndef __CondParser_h #define __CondParser_h #ifndef __Token_h #include "Token.h" #endif #ifndef __PTypes_h #include "PTypes.h" #endif class Symbol; class CondParser { public: CondParser(); ~CondParser(); bool Parse(long &value); private: enum State { kValueState, kOpState }; void Init(); bool DoValueState(int t, TokenVal v); bool DoOpState(int t); bool ParseDefined(long &value); void ReduceUnaries(long x); void Reduce(int limit=0); void Push(long x); long Pop() { return fStack[--fDepth]; } void Drop(int n) { fDepth -= n; } State fState; int fUnaryCount; int fParen; int fDepth; int fMaxDepth; long* fStack; Symbol* fDefinedSymbol; }; #endif