37 lines
1.1 KiB
Haskell
37 lines
1.1 KiB
Haskell
{-# OPTIONS_GHC -W #-}
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module Generate.JavaScript.Helpers where
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import qualified SourceSyntax.Helpers as Help
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import Language.ECMAScript3.Syntax
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split :: String -> [String]
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split = go []
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where
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go vars str =
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case break (=='.') str of
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(x,_:rest) | Help.isOp x -> vars ++ [x ++ '.' : rest]
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| otherwise -> go (vars ++ [x]) rest
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(x,[]) -> vars ++ [x]
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var name = Id () name
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ref name = VarRef () (var name)
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prop name = PropId () (var name)
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f <| x = CallExpr () f [x]
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ret e = ReturnStmt () (Just e)
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args ==> e = FuncExpr () Nothing (map var args) [ ret e ]
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function args stmts = FuncExpr () Nothing (map var args) stmts
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call = CallExpr ()
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string = StringLit ()
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dotSep vars =
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case vars of
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x:xs -> foldl (DotRef ()) (ref x) (map var xs)
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[] -> error "dotSep must be called on a non-empty list of variables"
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obj = dotSep . split
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equal a b = InfixExpr () OpStrictEq a b
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instanceof tipe x =
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InfixExpr () OpLAnd (typeof "object" x) (InfixExpr () OpInstanceof x (ref tipe))
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typeof tipe x = equal (PrefixExpr () PrefixTypeof x) (string tipe)
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member field x = InfixExpr () OpIn (string field) x
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