git.iko.soy/elk
on bdf38e0 help sign in
elk/src/Generate/JavaScript/BuiltIn.hs
102 lines 2.1 kB history raw
1module Generate.JavaScript.BuiltIn where
3import Control.Arrow (first)
4import qualified Language.ECMAScript3.Syntax as JS
6import qualified AST.Module.Name as ModuleName
7import Generate.JavaScript.Helpers
8import qualified Reporting.Region as R
12utils :: String -> [JS.Expression ()] -> JS.Expression ()
13utils func args =
14 obj ["_U", func] `call` args
18-- LITERALS
21character :: Char -> JS.Expression ()
22character char =
23 utils "chr" [ JS.StringLit () [char] ]
26string :: String -> JS.Expression ()
27string str =
28 JS.StringLit () str
32-- LISTS
35list :: [JS.Expression ()] -> JS.Expression ()
36list elements =
37 utils "list" [ JS.ArrayLit () elements ]
40range :: JS.Expression () -> JS.Expression () -> JS.Expression ()
41range low high =
42 utils "range" [ low, high ]
46-- RECORDS
49recordUpdate :: JS.Expression () -> [(String, JS.Expression ())] -> JS.Expression ()
50recordUpdate record fields =
51 utils "update"
52 [ record
53 , JS.ObjectLit () (map (first prop) fields)
54 ]
58-- COMPARISIONS
61eq :: JS.Expression () -> JS.Expression () -> JS.Expression ()
62eq left right =
63 utils "eq" [ left, right ]
66cmp :: JS.Expression () -> JS.Expression () -> JS.Expression ()
67cmp left right =
68 utils "cmp" [ left, right ]
72-- CRASH
75crash :: ModuleName.Canonical -> R.Region -> Maybe (JS.Expression ()) -> JS.Expression ()
76crash home region maybeCaseCrashValue =
77 let
78 homeString =
79 JS.StringLit () (ModuleName.canonicalToString home)
80 in
81 case maybeCaseCrashValue of
82 Nothing ->
83 utils "crash" [ homeString, regionToJs region ]
85 Just crashValue ->
86 utils "crashCase" [ homeString, regionToJs region, crashValue ]
89regionToJs :: R.Region -> JS.Expression ()
90regionToJs (R.Region start end) =
91 JS.ObjectLit ()
92 [ ( prop "start", positionToJs start )
93 , ( prop "end", positionToJs end )
94 ]
97positionToJs :: R.Position -> JS.Expression ()
98positionToJs (R.Position line column) =
99 JS.ObjectLit ()
100 [ ( prop "line", JS.IntLit () line )
101 , ( prop "column", JS.IntLit () column )
102 ]