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neovim-flake/lib/lua.nix

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# Helpers for converting values to lua
{lib}: rec {
# yes? no.
yesNo = value:
if value
then "yes"
else "no";
# Convert a null value to lua's nil
nullString = value:
if value == null
then "nil"
else "'${value}'";
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# convert an expression to lua
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expToLua = exp:
if builtins.isList exp
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then listToLuaTable exp # if list, convert to lua table
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else if builtins.isAttrs exp
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then attrsetToLuaTable exp # if attrs, convert to table
else if builtins.isBool exp
then lib.boolToString exp # if bool, convert to string
else if builtins.isInt exp
then builtins.toString exp # if int, convert to string
else (builtins.toJSON exp); # otherwise jsonify the value and print as is
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# convert list to a lua table
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listToLuaTable = list:
"{ " + (builtins.concatStringsSep ", " (map expToLua list)) + " }";
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# convert attrset to a lua table
attrsetToLuaTable = attrset:
"{ "
+ (
builtins.concatStringsSep ", "
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(
lib.mapAttrsToList (
name: value:
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name
+ " = "
+ (expToLua value)
)
attrset
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)
)
+ " }";
}