| 158 | } |
| 159 | |
| 160 | function inMathMode(source, state, endModeSeq) { |
| 161 | if (source.eatSpace()) { |
| 162 | return null; |
| 163 | } |
| 164 | if (source.match(endModeSeq)) { |
| 165 | setState(state, normal); |
| 166 | return "keyword"; |
| 167 | } |
| 168 | if (source.match(/^\\[a-zA-Z@]+/)) { |
| 169 | return "tag"; |
| 170 | } |
| 171 | if (source.match(/^[a-zA-Z]+/)) { |
| 172 | return "variable-2"; |
| 173 | } |
| 174 | // escape characters |
| 175 | if (source.match(/^\\[$&%#{}_]/)) { |
| 176 | return "tag"; |
| 177 | } |
| 178 | // white space control characters |
| 179 | if (source.match(/^\\[,;!\/]/)) { |
| 180 | return "tag"; |
| 181 | } |
| 182 | // special math-mode characters |
| 183 | if (source.match(/^[\^_&]/)) { |
| 184 | return "tag"; |
| 185 | } |
| 186 | // non-special characters |
| 187 | if (source.match(/^[+\-<>|=,\/@!*:;'"`~#?]/)) { |
| 188 | return null; |
| 189 | } |
| 190 | if (source.match(/^(\d+\.\d*|\d*\.\d+|\d+)/)) { |
| 191 | return "number"; |
| 192 | } |
| 193 | var ch = source.next(); |
| 194 | if (ch == "{" || ch == "}" || ch == "[" || ch == "]" || ch == "(" || ch == ")") { |
| 195 | return "bracket"; |
| 196 | } |
| 197 | |
| 198 | if (ch == "%") { |
| 199 | source.skipToEnd(); |
| 200 | return "comment"; |
| 201 | } |
| 202 | return "error"; |
| 203 | } |
| 204 | |
| 205 | function beginParams(source, state) { |
| 206 | var ch = source.peek(), lastPlug; |