rust/validation.md

Fixmes:

* Fix `is_whitespace`, add more tests
* Add more thorough tests for idents for XID_Start & XID_Continue
* Validate that float and integer literals use digits only of the appropriate
  base, and are in range
* Validation for unclosed char literal
* Strings are completely wrong: more tests and comparison with libsyntax.
Cleanup character classes 2017-12-29 15:48:47 -06:00			`Fixmes:`

Lexer: start numbers 2017-12-30 06:22:40 -06:00			* Fix `is_whitespace`, add more tests
Lexer: underscore 2017-12-29 16:01:57 -06:00			`* Add more thorough tests for idents for XID_Start & XID_Continue`
Lexer: start numbers 2017-12-30 06:22:40 -06:00			`* Validate that float and integer literals use digits only of the appropriate`
			`base, and are in range`
Lexer: basic chars & lifetimes 2017-12-31 01:41:42 -06:00			`* Validation for unclosed char literal`
Lexer: byte strings 2017-12-31 05:02:55 -06:00			`* Strings are completely wrong: more tests and comparison with libsyntax.`