X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=lex.dcl;h=7e41bc3c28b85693819e2c833d9470a8c2808047;hb=e3f049be4fb2ed9b7f675f06a9a525c81af9946c;hp=95bd0bd6824c7cd235ddefbac5c280b70a724ce1;hpb=6910d87166dedb7032fd31684e52df3d0b25910e;p=cc1516.git diff --git a/lex.dcl b/lex.dcl index 95bd0bd..7e41bc3 100644 --- a/lex.dcl +++ b/lex.dcl @@ -5,22 +5,34 @@ import Data.Either :: Token //Value tokens = IdentToken [Char] // Identifier - | NumberToken Int // Integer + | NumberToken [Char]// Integer | CharToken Char // Character literal //Keyword tokens | VarToken // var keyword - | VoidToken // void keyword | ReturnToken // return keyword | IfToken // if keyword | ElseToken // else keyword | WhileToken // while keyword | TrueToken // True keyword | FalseToken // False keyword + | VoidToken // Void keyword + | IntTypeToken // Int keyword + | CharTypeToken // Char keyword + | BoolTypeToken // Bool keyword + //Two character tokens + | DoubleColonToken // :: + | NotEqualToken // != + | LesserEqToken // <= + | GreaterEqToken // >= + | EqualsToken // == + | AmpersandsToken // && + | PipesToken // || + | ArrowToken // -> //One character tokens | BraceOpenToken // ( | BraceCloseToken // ) | CBraceOpenToken // { - | CBraceCloseToken // { + | CBraceCloseToken // } | SquareOpenToken // [ | SquareCloseToken // ] | CommaToken // , @@ -36,15 +48,9 @@ import Data.Either | LesserToken // < | BiggerToken // > | ExclamationToken // ! - //Two character tokens - | DoubleColonToken // :: - | LesserEqToken // <= - | GreaterEqToken // >= - | EqualsToken // == - | AmpersandsToken // && - | PipesToken // || - | ArrowToken // -> + //Special tokens + | EndOfFileToken // EOF -:: LexerOutput a :== Either String a +:: LexerOutput :== Either String [Token] -lexer :: [Char] -> LexerOutput [Token] +lexer :: [Char] -> LexerOutput