1*b1cdbd2cSJim Jagielski /************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski 24*b1cdbd2cSJim Jagielski #ifndef ADC_TKP2_HXX 25*b1cdbd2cSJim Jagielski #define ADC_TKP2_HXX 26*b1cdbd2cSJim Jagielski 27*b1cdbd2cSJim Jagielski // USED SERVICES 28*b1cdbd2cSJim Jagielski // BASE CLASSES 29*b1cdbd2cSJim Jagielski // COMPONENTS 30*b1cdbd2cSJim Jagielski class CharacterSource; 31*b1cdbd2cSJim Jagielski class TkpContext; 32*b1cdbd2cSJim Jagielski // PARAMETRS 33*b1cdbd2cSJim Jagielski 34*b1cdbd2cSJim Jagielski 35*b1cdbd2cSJim Jagielski 36*b1cdbd2cSJim Jagielski /** This is the interface for parser classes, which get a sequence of Token s from 37*b1cdbd2cSJim Jagielski a text. 38*b1cdbd2cSJim Jagielski 39*b1cdbd2cSJim Jagielski Start() starts to parse the text from the given i_rSource. 40*b1cdbd2cSJim Jagielski GetNextToken() returns a Token on the heap as long as there are 41*b1cdbd2cSJim Jagielski still characters in the text left. The last time GetNextToken() 42*b1cdbd2cSJim Jagielski returns NULL. 43*b1cdbd2cSJim Jagielski 44*b1cdbd2cSJim Jagielski The algorithms for parsing tokens from the text are an issue of 45*b1cdbd2cSJim Jagielski the derived classes. 46*b1cdbd2cSJim Jagielski */ 47*b1cdbd2cSJim Jagielski class TokenParse2 48*b1cdbd2cSJim Jagielski { 49*b1cdbd2cSJim Jagielski public: 50*b1cdbd2cSJim Jagielski // LIFECYCLE 51*b1cdbd2cSJim Jagielski TokenParse2(); ~TokenParse2()52*b1cdbd2cSJim Jagielski virtual ~TokenParse2() {} 53*b1cdbd2cSJim Jagielski 54*b1cdbd2cSJim Jagielski // OPERATIONS 55*b1cdbd2cSJim Jagielski virtual void Start( 56*b1cdbd2cSJim Jagielski CharacterSource & 57*b1cdbd2cSJim Jagielski i_rSource ); 58*b1cdbd2cSJim Jagielski 59*b1cdbd2cSJim Jagielski /** @short Gets the next identifiable token out of the 60*b1cdbd2cSJim Jagielski source code. 61*b1cdbd2cSJim Jagielski @return true, if there was passed a valid token. 62*b1cdbd2cSJim Jagielski false, if the parsed stream is finished or 63*b1cdbd2cSJim Jagielski an error occured. 64*b1cdbd2cSJim Jagielski */ 65*b1cdbd2cSJim Jagielski bool GetNextToken(); 66*b1cdbd2cSJim Jagielski 67*b1cdbd2cSJim Jagielski private: 68*b1cdbd2cSJim Jagielski virtual void SetStartContext() = 0; 69*b1cdbd2cSJim Jagielski virtual void SetCurrentContext( 70*b1cdbd2cSJim Jagielski TkpContext & io_rContext ) = 0; 71*b1cdbd2cSJim Jagielski virtual TkpContext & 72*b1cdbd2cSJim Jagielski CurrentContext() = 0; 73*b1cdbd2cSJim Jagielski // DATA 74*b1cdbd2cSJim Jagielski CharacterSource * pChars; 75*b1cdbd2cSJim Jagielski }; 76*b1cdbd2cSJim Jagielski 77*b1cdbd2cSJim Jagielski 78*b1cdbd2cSJim Jagielski #endif 79*b1cdbd2cSJim Jagielski 80*b1cdbd2cSJim Jagielski 81