yi-language-0.2.0: Collection of language-related Yi libraries.

Safe HaskellNone




alexScanToken :: (AlexState HlState, AlexInput) -> Maybe (Tok Token, (AlexState HlState, AlexInput)) Source

Scan one token. Return (maybe) a token and a new state.

tokenToStyle :: Token -> UIStyle -> Style Source

Takes a Token and returns a style to be used for that type of token.

TODO: The elem check is potentially unnecessarily slow. We could split the Const constructor into two different ones, one for builtins and one for others.

data Token Source

The different tokens.


data Reserved Source

The constructors for Reserved have an apostrophe as a suffix because Default is already used. Also note that Undefined' is not intended as some sort of "backup" reserved word for things we don't care about -- it really means the "undefined" built-in in JavaScript.


data Operator Source

The constructors for Operator have an apostrophe as a suffix because e.g. LT is already used by Prelude.


type HlState = Int Source

HlState is 0 when outside of a multi-line comment and -1 when inside one.

prefixOperators :: [Operator] Source

Prefix operators. NOTE: Add' is also a valid prefix operator, but since it's completely useless in the real world, we don't care about it here. Doing this makes parsing much, much easier.

infixOperators :: [Operator] Source

Infix operators.

postfixOperators :: [Operator] Source

Postfix operators.