Add Util/Lexer.pas #337
Add Util/Lexer.pas #337
Conversation
Util/Lexer.pas
Outdated
| LexerRules: array[0..2] of TTokenRuleDef = ( | ||
| (R: '[A-Z]+'; T: Ord(ttAlpha)), | ||
| (R: '\d+'; T: Ord(ttNumeric)), | ||
| (R: '[A-Z][A-Z\d]*'; T: Ord(ttAlphaNumeric)) |
There was a problem hiding this comment.
Unless I miss something it must start with a letter, so it's not "AlphaNumeric" per se. "1A" won't match for example. I understand it's only examples, but it's a bit confusing.
There was a problem hiding this comment.
Good point. I initially started thinking the ttAlphaNumeric and ttNumericAlpha tokens would be useful, but they weren't. In the end for ARRL SS Contest, I converged on three token types: ttAlpha, ttDigits (numeric), and ttCallsign. I will update the above example to remove the ttAlphaNumeric. I will update this example later today or tonight.
In the few days, I'll post the ARRL SS Contest for review. It will show the tables used for SS and will hopefully be more clear. Parsing has never been my strength, so my examples may not be the best to provide.
Thank you for the feedback.
There was a problem hiding this comment.
I updated the comments and pushed an updated version.
Adding a general-purpose Lexer to MRCE. This will be extended for parsing the ARRL Sweepstakes exchange. See #336 for additional details.