comparison: src/lexerScanner.h
src/lexerScanner.h
- changeset 124
- a7b769a0e537
- parent 119
- bdf8d46c145f
- child 133
- dbbdb870c835
equal
deleted
inserted
replaced
| 123:ad33901eb4f6 | 124:a7b769a0e537 |
|---|---|
| 32 #include <climits> | 32 #include <climits> |
| 33 #include "main.h" | 33 #include "main.h" |
| 34 | 34 |
| 35 class LexerScanner | 35 class LexerScanner |
| 36 { | 36 { |
| 37 public: | 37 public: |
| 38 struct PositionInfo | 38 struct PositionInfo |
| 39 { | 39 { |
| 40 char* pos; | 40 char* pos; |
| 41 int line; | 41 int line; |
| 42 }; | 42 }; |
| 43 | 43 |
| 44 // Flags for check_string() | 44 // Flags for check_string() |
| 45 enum | 45 enum |
| 46 { | 46 { |
| 47 FCheckWord = (1 << 0), // must be followed by whitespace | 47 FCheckWord = (1 << 0), // must be followed by whitespace |
| 48 FCheckPeek = (1 << 1), // don't advance cursor | 48 FCheckPeek = (1 << 1), // don't advance cursor |
| 49 }; | 49 }; |
| 50 | 50 |
| 51 static inline bool isSymbolChar (char c, bool allownumbers) | 51 static inline bool isSymbolChar (char c, bool allownumbers) |
| 52 { | 52 { |
| 53 if (allownumbers && (c >= '0' && c <= '9')) | 53 if (allownumbers && (c >= '0' && c <= '9')) |
| 54 return true; | 54 return true; |
| 55 | 55 |
| 56 return (c >= 'a' && c <= 'z') || | 56 return (c >= 'a' && c <= 'z') || |
| 57 (c >= 'A' && c <= 'Z') || | 57 (c >= 'A' && c <= 'Z') || |
| 58 (c == '_'); | 58 (c == '_'); |
| 59 } | 59 } |
| 60 | 60 |
| 61 LexerScanner (FILE* fp); | 61 LexerScanner (FILE* fp); |
| 62 ~LexerScanner(); | 62 ~LexerScanner(); |
| 63 bool getNextToken(); | 63 bool getNextToken(); |
| 64 String readLine(); | 64 String readLine(); |
| 65 | 65 |
| 66 inline const String& getTokenText() const | 66 inline const String& getTokenText() const |
| 67 { | 67 { |
| 68 return m_tokenText; | 68 return m_tokenText; |
| 69 } | 69 } |
| 70 | 70 |
| 71 inline int getLine() const | 71 inline int getLine() const |
| 72 { | 72 { |
| 73 return m_line; | 73 return m_line; |
| 74 } | 74 } |
| 75 | 75 |
| 76 inline int getColumn() const | 76 inline int getColumn() const |
| 77 { | 77 { |
| 78 return m_position - m_lineBreakPosition; | 78 return m_position - m_lineBreakPosition; |
| 79 } | 79 } |
| 80 | 80 |
| 81 inline ETokenType getTokenType() const | 81 inline ETokenType getTokenType() const |
| 82 { | 82 { |
| 83 return m_tokenType; | 83 return m_tokenType; |
| 84 } | 84 } |
| 85 | 85 |
| 86 static String getTokenString (ETokenType a); | 86 static String getTokenString (ETokenType a); |
| 87 | 87 |
| 88 private: | 88 private: |
| 89 char* m_data; | 89 char* m_data; |
| 90 char* m_position; | 90 char* m_position; |
| 91 char* m_lineBreakPosition; | 91 char* m_lineBreakPosition; |
| 92 String m_tokenText, | 92 String m_tokenText, |
| 93 m_lastToken; | 93 m_lastToken; |
| 94 ETokenType m_tokenType; | 94 ETokenType m_tokenType; |
| 95 int m_line; | 95 int m_line; |
| 96 | 96 |
| 97 bool checkString (const char* c, int flags = 0); | 97 bool checkString (const char* c, int flags = 0); |
| 98 | 98 |
| 99 // Yields a copy of the current position information. | 99 // Yields a copy of the current position information. |
| 100 PositionInfo getPosition() const; | 100 PositionInfo getPosition() const; |
| 101 | 101 |
| 102 // Sets the current position based on given data. | 102 // Sets the current position based on given data. |
| 103 void setPosition (const PositionInfo& a); | 103 void setPosition (const PositionInfo& a); |
| 104 | 104 |
| 105 // Skips one character | 105 // Skips one character |
| 106 void skip(); | 106 void skip(); |
| 107 | 107 |
| 108 // Skips many characters | 108 // Skips many characters |
| 109 void skip (int chars); | 109 void skip (int chars); |
| 110 }; | 110 }; |
| 111 | 111 |
| 112 #endif // BOTC_LEXER_SCANNER_H | 112 #endif // BOTC_LEXER_SCANNER_H |
