X-Git-Url: https://git.martlubbers.net/?a=blobdiff_plain;f=lex.icl;h=9a414cbdcc953575434fb4e1b8985b20e5e788f3;hb=f5231ebadae1ac54e25dbf5819debb3ab625826d;hp=82e61393b9b9b1e7ac266e02c1e68b7723bb4e46;hpb=345b80b49413bb1b52735fb155faded41456a6b7;p=cc1516.git

diff --git a/lex.icl b/lex.icl
deleted file mode 100644
index 82e6139..0000000
--- a/lex.icl
+++ /dev/null
@@ -1,78 +0,0 @@
-implementation module lex
-
-import Control.Monad
-import Data.Either, Data.Maybe, Data.Map, Data.Func
-import StdString
-import StdTuple
-import StdBool
-import StdList
-import StdChar
-
-SingleCharTokens :: Map Char TokenValue
-SingleCharTokens = fromList [
-	('(', BraceOpenToken), (')', BraceCloseToken), ('{', CBraceOpenToken),
-	('}', CBraceCloseToken), ('[', SquareOpenToken), (']', SquareCloseToken),
-	(',', CommaToken), (':', ColonToken), (';', SColonToken),
-	('.', DotToken), ('+', PlusToken), ('*', StarToken), ('/', SlashToken),
-	('%', PercentToken), ('=', AssignmentToken), ('<', LesserToken),
-	('>', BiggerToken), ('!', ExclamationToken)]
-
-EscapeMap :: Map Char Char
-EscapeMap = fromList [('a', toChar 7), ('b', '\b'), ('f', '\f'), ('n', '\n'),
-	('r', '\r'), ('t', '\t'), ('v', '\v')]
-
-lexer :: [Char] -> LexerOutput
-lexer x = lexer` x 1
-	where
-		lexer` :: [Char] Int -> LexerOutput
-		lexer` [] i = Right []
-		lexer` x i = case lex x i of
-			(Right t, rest, i) = lexer` rest i >>= \ts.Right [t:ts]
-			(Left e, _, _) = Left e
-
-ret:: TokenValue [Char] Int -> (Either String Token, [Char], Int)
-ret tv rest i = (Right (i, tv), rest, i)
-
-err :: String Int -> (Either String Token, [Char], Int)
-err s i = (Left ("Line " +++ toString i +++ ": " +++ s), [], i)
-
-lex :: [Char] -> (Int -> (Either String Token, [Char], Int))
-lex [] = ret EndOfFileToken []
-lex ['/':'/':xs] = lex (dropWhile ((<>) '\n') xs)
-lex ['/':'*':xs] =  \i.let (c, r) = span ((<>) ('*','/')) $ zip2 [' ':xs] xs in
-	lex (tl $ map snd $ tl $ r) (i + length [x\\(x, _)<-c | x == '\n'])
-lex ['v':'a':'r':xs] = ret VarToken xs
-lex ['V':'o':'i':'d':xs] = ret VoidToken xs
-lex ['r':'e':'t':'u':'r':'n':xs] = ret ReturnToken xs
-lex ['i':'f':xs] = ret IfToken xs
-lex ['e':'l':'s':'e':xs] = ret ElseToken xs
-lex ['w':'h':'i':'l':'e':xs] = ret WhileToken xs
-lex ['T':'r':'u':'e':xs] = ret TrueToken xs
-lex ['F':'a':'l':'s':'e':xs] = ret FalseToken xs
-lex ['I':'n':'t':xs] = ret IntTypeToken xs
-lex ['C':'h':'a':'r':xs] = ret CharTypeToken xs
-lex ['B':'o':'o':'l':xs] = ret BoolTypeToken xs
-lex [':':':':xs] = ret DoubleColonToken xs
-lex ['!':'=':xs] = ret NotEqualToken xs
-lex ['<':'=':xs] = ret LesserEqToken xs
-lex ['>':'=':xs] = ret GreaterEqToken xs
-lex ['=':'=':xs] = ret EqualsToken xs
-lex ['&':'&':xs] = ret AmpersandsToken xs
-lex ['|':'|':xs] = ret PipesToken xs
-lex ['-':'>':xs] = ret ArrowToken xs
-lex ['\'':x:'\'':xs] = ret (CharToken x) xs
-lex ['\'':'\\':x:'\'':xs] = case get x EscapeMap of
-	Just t = ret (CharToken t) xs
-	_ = err ("Unknown escape: \\" +++ toString x)
-lex ['-':t=:[x:xs]]
-| isDigit x = let (n, r) = span isDigit t in ret (NumberToken ['-':n]) r
-| otherwise = ret DashToken  xs
-lex t=:[x:xs] = case get x SingleCharTokens of
-	(Just tok) = ret tok xs
-	Nothing
-	| x == '\n' = \i.lex xs (i+1)
-	| isSpace x = lex xs
-	| isDigit x = let (v, r) = span isDigit t in ret (NumberToken v) r
-	| isAlpha x = let (v, r) = span isIdent t in ret (IdentToken v) r
-		with isIdent c = isAlphanum c || c == '_'
-	| otherwise = err ("Unexpected character: " +++ toString x)