jsim2010 / rec Goto Github PK

• Need a way to trigger release
• Should release to cargo, tag, and create release in github

• Atom | Element -> Ch where Element.is_atom() is true
  • PROBLEM impl** BitOr<Element> for Atom must define an Output type, which must be Rec if Element.is_atom() is false.
  • WORKAROUND Make Element an Atom; ex: Convert Class::Digit | "a" to Class::Digit | 'a'.
• x | x where x is char or &str or String
  • PROBLEM impl BitOr for x does not use types inside crate
  • WORKAROUND Use Ch::AnyOf for union of chars and Rec::from for the others.
• x * .. where x is char or &str or String
  • PROBLEM impl Mul<RangeFull> for x does not use types inside crate
  • WORKAROUND Use rpt to generate a RepeatRange

Instead of ChCls::Digit.rpt(SOME), could use SOME(ChCls::Digit).

Question how would this work with defined quantifiers? Ex: {1,3}

Thus Ch::Range(char::from(32), char::from(45)) would become Ch::Range(32, 45)

Blocked by stabilization of Span::join()

This must update the version in src/lib.rs prior to running cargo readme

• Change Pattern::define to Pattern::new().
• Change Pattern::load to instead use String::parse::().
  • Ex: let pattern = Pattern::new(user_str.parse::<Rec>()?);

Will also need to update documentation to highlight correct usage of functionality.

Currently grouping occurs when the alternation is applied. This results in regexes with just the alternation, ex: "aa" | "bb", being grouped, i.e. (?:aa|bb), even though the grouping is not needed, aa|bb. Ideally, this grouping only applies if it is necessary, ex: ("aa" | "bb") + "c" = (?:aa|bb)c.

Blocked by stabilization of str concatenation as const

range(min, max) both values inclusive

Appears regex does not allow {,x} repetition. Will need to use {0,x}.

Blocked by stabilization of str concatenation as const

Example: "a" + ("b" | "c") + "d" becomes ab|cd instead of a(b|c)d

Also check out snafu

Could be useful for matching patterns as they are typed.

More investigation is needed.

Ex: Ch::range(start, end) would become Ch::Range(start..=end).

This potentially would allow certain items to be const.

use [[:xdigit:]]

Adds a non-zero digit i.e. 1-9

Ex: Ch(0x0d)

Blocked by #84

example: '.' | Class::Digit