| | 257 | First the comma and whitespace is scanned, handled by [source:/trunk/compilers/pirc/src/hdocprep.l#L449 line 449]. Then the argument "42" is matched ([source:/trunk/compilers/pirc/src/hdocprep.l#L449 line 449], "any character") as well as the comma. |
| | 258 | |
| | 259 | Then the heredoc marker for heredoc B is scanned ([source:/trunk/compilers/pirc/src/hdocprep.l#L428 line 428]). This section of code is almost similar to the section that matches heredoc markers in the INITIAL state ([source:/trunk/compilers/pirc/src/hdocprep.l#L306 line 306]). The difference is that instead of activating SAVE_REST_OF_LINE state, the SAVE_REST_AGAIN state is activated. SAVE_REST_AGAIN is almost the same to SAVE_REST_OF_LINE state. The difference is, that in SAVE_REST_OF_LINE, the lexer is still reading from the file buffer, whereas when the lexer is in SAVE_REST_AGAIN, it is scanning a string buffer. Therefore, the lexer must switch from the string buffer to reading the file buffer, which is done in [source:/trunk/compilers/pirc/src/hdocprep.l#L350 line 350]. |
| | 260 | |
| | 261 | At this point, heredoc string B is scanned. After that, heredoc string C is scanned. It is left as the proverbial exercise to the reader to try to understand how this is done. The previous discussion of the involved lexer states should greatly help in this. |
