47 lines
1.1 KiB
Nix
47 lines
1.1 KiB
Nix
let
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inherit (builtins) isString isFloat isInt isBool isList isAttrs isNull;
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inherit (builtins) concatStringsSep filter mapAttrs attrValues;
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mkLuaNil = { _type = "nil"; };
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isLuaNil = val: isAttrs val && val ? _type && val._type == "nil";
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toLua = val:
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if isLuaNil val then "nil"
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else if isAttrs val then toLuaDict val
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else if isList val then toLuaList val
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else if isString val then toLuaStr val
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else if isFloat val || isInt val then toString val
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else if isBool val then toLuaBool val
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else if isNull val then null
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else null;
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toLuaList = val:
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wrapObj (excludeNull (map toLua val));
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toLuaDict = val:
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let
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toDictItem = name: value:
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let luaValue = toLua value;
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in
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if isNull luaValue then null
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else "[${toLuaStr name}] = ${luaValue}";
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dictItems = excludeNull (attrValues (mapAttrs toDictItem val));
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in
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wrapObj dictItems;
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excludeNull = val: filter (v: !(isNull v)) val;
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wrapObj = val: "{ ${concatStringsSep ", " val} }";
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toLuaStr = val: "\"${val}\"";
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toLuaBool = val: if val then "true" else "false";
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in
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{
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inherit toLua;
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inherit mkLuaNil;
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}
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