1 /* 2 * BasicTextualInputPort.h - 3 * 4 * Copyright (c) 2008 Higepon(Taro Minowa) <higepon@users.sourceforge.jp> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 23 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 25 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 26 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * $Id: BasicTextualInputPort.h 261 2008-07-25 06:16:44Z higepon $ 30 */ 31 32 #ifndef SCHEME_TEXTUAL_INPUT_PORT_ 33 #define SCHEME_TEXTUAL_INPUT_PORT_ 34 35 #include "Port.h" 36 37 namespace scheme { 38 39 class Codec; 40 class Transcoder; 41 class BinaryInputPort; 42 class Scanner; 43 class NumberScanner; 44 45 class TextualInputPort : virtual public Port 46 { 47 public: 48 TextualInputPort(); 49 virtual ~TextualInputPort(); 50 51 virtual ucs4char getChar() = 0; 52 virtual int getLineNo() const = 0; 53 virtual void unGetChar(ucs4char c) = 0; 54 virtual Transcoder* transcoder() const = 0; 55 56 // template method pattern 57 virtual ucs4string getString(int n); 58 virtual ucs4string getStringAll(); 59 virtual ucs4char lookaheadChar(); 60 virtual Object getLine(); 61 virtual void setError(Object error); 62 virtual Object error() const; 63 virtual Object getDatum(bool& errorOccured); 64 virtual Scanner* scanner() const; 65 virtual NumberScanner* numberScanner() const; 66 virtual bool hasPosition() const; 67 virtual bool hasSetPosition() const; 68 virtual Object position() const; 69 virtual bool setPosition(int64_t position); 70 71 bool isStrictR6RsReaderMode() const; 72 void setStrictR6RsReaderMode(); 73 74 private: 75 Object error_; 76 Scanner* scanner_; 77 NumberScanner* numberScanner_; 78 bool isStrictR6RsReaderMode_; 79 }; 80 81 } // namespace scheme 82 83 #endif // SCHEME_TEXTUAL_INPUT_PORT_ 84