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#ifndef INC_CharBuffer_hpp__ |
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#define INC_CharBuffer_hpp__ |
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|
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/* ANTLR Translator Generator |
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* Project led by Terence Parr at http://www.jGuru.com |
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* Software rights: http://www.antlr.org/license.html |
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* |
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* $Id$ |
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*/ |
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|
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#include <istream> |
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|
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#include <antlr/config.hpp> |
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#include <antlr/InputBuffer.hpp> |
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|
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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namespace antlr { |
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#endif |
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|
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/**A Stream of characters fed to the lexer from a InputStream that can |
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* be rewound via mark()/rewind() methods. |
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* <p> |
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* A dynamic array is used to buffer up all the input characters. Normally, |
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* "k" characters are stored in the buffer. More characters may be stored |
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* during guess mode (testing syntactic predicate), or when LT(i>k) is |
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* referenced. |
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* Consumption of characters is deferred. In other words, reading the next |
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* character is not done by consume(), but deferred until needed by LA or LT. |
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* <p> |
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* |
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* @see antlr.CharQueue |
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*/ |
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|
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class ANTLR_API CharBuffer : public InputBuffer { |
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public: |
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/// Create a character buffer |
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CharBuffer( ANTLR_USE_NAMESPACE(std)istream& input ); |
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/// Get the next character from the stream |
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int getChar(); |
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|
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protected: |
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// character source |
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ANTLR_USE_NAMESPACE(std)istream& input; |
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|
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private: |
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// NOTE: Unimplemented |
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CharBuffer(const CharBuffer& other); |
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CharBuffer& operator=(const CharBuffer& other); |
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}; |
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|
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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} |
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#endif |
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|
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#endif //INC_CharBuffer_hpp__ |
