48 lines
1.1 KiB
Nix
48 lines
1.1 KiB
Nix
# Helpers for converting values to lua
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{lib}: rec {
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# yes? no.
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yesNo = value:
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if value
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then "yes"
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else "no";
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# Convert a null value to lua's nil
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nullString = value:
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if value == null
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then "nil"
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else "'${value}'";
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# convert an expression to lua
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expToLua = exp:
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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
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else if builtins.isBool exp
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then lib.boolToString exp # if bool, convert to string
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else if builtins.isInt exp
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then builtins.toString exp # if int, convert to string
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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:
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"{ " + (builtins.concatStringsSep ", " (map expToLua list)) + " }";
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# convert attrset to a lua table
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attrsetToLuaTable = attrset:
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"{ "
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+ (
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builtins.concatStringsSep ", "
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(
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lib.mapAttrsToList (
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name: value:
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name
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+ " = "
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+ (expToLua value)
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)
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attrset
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)
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)
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+ " }";
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}
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