| 153 | // Private classes |
| 154 | |
| 155 | class tokeniser |
| 156 | { |
| 157 | // Private data |
| 158 | |
| 159 | Istream& is_; |
| 160 | |
| 161 | List<token> tokens_; |
| 162 | |
| 163 | label start_; |
| 164 | |
| 165 | label size_; |
| 166 | |
| 167 | |
| 168 | // Private Member Functions |
| 169 | |
| 170 | void push(const token&); |
| 171 | |
| 172 | token pop(); |
| 173 | |
| 174 | void unpop(const token&); |
| 175 | |
| 176 | public: |
| 177 | |
| 178 | // Constructors |
| 179 | |
| 180 | tokeniser(Istream&); |
| 181 | |
| 182 | |
| 183 | // Member Functions |
| 184 | |
| 185 | Istream& stream() |
| 186 | { |
| 187 | return is_; |
| 188 | } |
| 189 | |
| 190 | bool hasToken() const; |
| 191 | |
| 192 | token nextToken(); |
| 193 | |
| 194 | void putBack(const token&); |
| 195 | |
| 196 | void splitWord(const word&); |
| 197 | |
| 198 | static bool valid(char c); |
| 199 | |
| 200 | static label priority(const token& t); |
| 201 | }; |
| 202 | |
| 203 | |
| 204 | //- Reset exponents to nearest integer if close to it. Used to |