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#ifndef INC_Token_hpp__ |
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#define INC_Token_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 <antlr/config.hpp> |
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#include <antlr/TokenRefCount.hpp> |
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#include <string> |
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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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struct TokenRef; |
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|
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/** A token is minimally a token type. Subclasses can add the text matched |
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* for the token and line info. |
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*/ |
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class ANTLR_API Token |
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{ |
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public: |
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// constants |
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#ifndef NO_STATIC_CONSTS |
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static const int MIN_USER_TYPE = 4; |
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static const int NULL_TREE_LOOKAHEAD = 3; |
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static const int INVALID_TYPE = 0; |
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static const int EOF_TYPE = 1; |
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static const int SKIP = -1; |
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#else |
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enum { |
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MIN_USER_TYPE = 4, |
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NULL_TREE_LOOKAHEAD = 3, |
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INVALID_TYPE = 0, |
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EOF_TYPE = 1, |
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SKIP = -1 |
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}; |
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#endif |
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|
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Token() |
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: ref(0) |
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, type(INVALID_TYPE) |
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{ |
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} |
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Token(int t) |
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: ref(0) |
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, type(t) |
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{ |
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} |
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Token(int t, const ANTLR_USE_NAMESPACE(std)string& txt) |
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: ref(0) |
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, type(t) |
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{ |
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setText(txt); |
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} |
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virtual ~Token() |
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{ |
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} |
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|
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virtual int getColumn() const; |
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virtual int getLine() const; |
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virtual ANTLR_USE_NAMESPACE(std)string getText() const; |
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virtual const ANTLR_USE_NAMESPACE(std)string& getFilename() const; |
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virtual int getType() const; |
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|
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virtual void setColumn(int c); |
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|
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virtual void setLine(int l); |
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virtual void setText(const ANTLR_USE_NAMESPACE(std)string& t); |
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virtual void setType(int t); |
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|
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virtual void setFilename( const std::string& file ); |
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|
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virtual ANTLR_USE_NAMESPACE(std)string toString() const; |
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|
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private: |
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friend struct TokenRef; |
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TokenRef* ref; |
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|
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int type; ///< the type of the token |
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|
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Token(RefToken other); |
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Token& operator=(const Token& other); |
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Token& operator=(RefToken other); |
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|
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Token(const Token&); |
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}; |
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|
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extern ANTLR_API RefToken nullToken; |
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|
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#ifdef NEEDS_OPERATOR_LESS_THAN |
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// RK: Added after 2.7.2 previously it was undefined. |
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// AL: what to return if l and/or r point to nullToken??? |
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inline bool operator<( RefToken l, RefToken r ) |
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{ |
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return nullToken == l ? ( nullToken == r ? false : true ) : l->getType() < r->getType(); |
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} |
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#endif |
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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_Token_hpp__ |
