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38 lines
1.2 KiB
Haskell
38 lines
1.2 KiB
Haskell
module SimpleEditor.JSON where
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import Text.JSON
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import SimpleEditor.Syntax
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instance JSON Grammar where
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showJSON (Grammar name extends abstract concretes) =
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makeObj ["basename".=name, "extends".=extends,
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"abstract".=abstract, "concretes".=concretes]
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instance JSON Abstract where
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showJSON (Abstract startcat cats funs) =
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makeObj ["startcat".=startcat, "cats".=cats, "funs".=funs]
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instance JSON Fun where showJSON (Fun name typ) = signature name typ
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instance JSON Param where showJSON (Param name rhs) = definition name rhs
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instance JSON Oper where showJSON (Oper name rhs) = definition name rhs
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signature name typ = makeObj ["name".=name,"type".=typ]
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definition name rhs = makeObj ["name".=name,"rhs".=rhs]
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instance JSON Concrete where
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showJSON (Concrete langcode opens params lincats opers lins) =
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makeObj ["langcode".=langcode, "opens".=opens,
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"params".=params, "opers".=opers,
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"lincats".=lincats, "lins".=lins]
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instance JSON Lincat where
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showJSON (Lincat cat lintype) = makeObj ["cat".=cat, "type".=lintype]
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instance JSON Lin where
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showJSON (Lin fun args lin) = makeObj ["fun".=fun, "args".=args, "lin".=lin]
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infix 1 .=
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name .= v = (name,showJSON v)
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