62 lines
2.2 KiB
Nix
62 lines
2.2 KiB
Nix
{lib}: let
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inherit (lib) isStringLike showOption showFiles getFiles mergeOneOption mergeEqualOption mkOptionType;
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inherit (lib.types) anything attrsOf;
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inherit (lib.nvim.types) anythingConcatLists;
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inherit (builtins) typeOf isAttrs any head concatLists stringLength;
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in {
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# HACK: Does this break anything in our case?
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# A modified version of the nixpkgs anything type that concatenates lists
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# This isn't the default because the order in which the lists are concatenated depends on the order in which the modules are imported,
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# which makes it non-deterministic
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anythingConcatLists =
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anything
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// {
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merge = loc: defs: let
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getType = value:
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if isAttrs value && isStringLike value
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then "stringCoercibleSet"
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else typeOf value;
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# Throw an error if not all defs have the same type
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checkType = getType (head defs).value;
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commonType =
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if any (def: getType def.value != checkType) defs
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then throw "The option `${showOption loc}' has conflicting option types in ${showFiles (getFiles defs)}"
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else checkType;
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mergeFunctions = {
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# Recursively merge attribute sets
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set = (attrsOf anythingConcatLists).merge;
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# Overridden behavior for lists, that concatenates lists
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list = _: defs: concatLists (map (e: e.value) defs);
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# This means it's a package, only accept a single definition
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stringCoercibleSet = mergeOneOption;
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# This works by passing the argument to the functions,
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# and merging their returns values instead
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lambda = loc: defs: arg:
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anythingConcatLists.merge
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(loc ++ ["<function body>"])
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(map (def: {
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inherit (def) file;
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value = def.value arg;
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})
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defs);
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};
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in
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# Merge the defs with the correct function from above, if available
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# otherwise only allow equal values
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(mergeFunctions.${commonType} or mergeEqualOption) loc defs;
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};
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char = mkOptionType {
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name = "char";
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description = "character";
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descriptionClass = "noun";
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check = value: stringLength value < 2;
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merge = mergeEqualOption;
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};
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}
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