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brag/brag-lib/brag
Matthew Butterick 81f4fd25e7
lex double-quoted strings with Racket lexer (#32)
Follow up on an idea in #31: use the Racket lexer to lex double-quoted strings in a grammar, thereby giving them all the semantics of Racket strings, and preventing any corner cases. This solution can’t be extended to single-quoted strings, however, because even with readtable tomfoolery to recognize a single quote as an opening delimiter for a string, the string still needs to be closed with a double quote. (I don’t know why this should be so, but it is the documented behavior.) Therefore single-quoted strings still are subject to the homegrown lexing solution and the flaws therein. Still, I don’t see that single-quoted strings have ever been a documented feature of brag (or its predecessor ragg). Perhaps they could be dropped altogether. For now, this solution is satisfying, because double-quoted strings are the dominant notation, and this PR will make them as good as they can be.
3 years ago
..
codegen Fix make-rule-parser (#28) 3 years ago
examples lex double-quoted strings with Racket lexer (#32) 3 years ago
private move 6 years ago
rules lex double-quoted strings with Racket lexer (#32) 3 years ago
test lex double-quoted strings with Racket lexer (#32) 3 years ago
info.rkt omit some setup 5 years ago
main.rkt move 6 years ago
support.rkt move 6 years ago