| 0,0 → 1,44 |
|---|
| /** \file tokenizer.h |
| * definitions of input output classes that read and write from string. |
| */ |
| |
| |
| #ifndef __tokenizer_h__ |
| #define __tokenizer_h__ |
| |
| #include "yacasbase.h" |
| #include "lispstring.h" |
| #include "lispio.h" |
| #include "lisphash.h" |
| class LispTokenizer : public YacasBase |
| { |
| public: |
| LispTokenizer() : iToken() {} |
| /// NextToken returns a string representing the next token, |
| /// or an empty list. |
| virtual LispString * NextToken(LispInput& aInput, |
| LispHashTable& aHashTable); |
| virtual ~LispTokenizer(){} |
| protected: |
| LispString iToken; //Can be used as a token container. |
| }; |
| |
| class CommonLispTokenizer : public LispTokenizer |
| { |
| public: |
| virtual LispString * NextToken(LispInput& aInput, |
| LispHashTable& aHashTable); |
| }; |
| |
| |
| // utility functions |
| LispBoolean IsDigit(LispChar c); |
| LispBoolean IsAlpha(LispChar c); |
| LispBoolean IsAlNum(LispChar c); |
| LispBoolean IsSymbolic(LispChar c); |
| |
| |
| |
| #endif |
| |
| |