class_name DefinitionParameterValidator
extends RefCounted


static func validate(parameters: Dictionary, owner: String) -> Array[String]:
	var errors: Array[String] = []
	for raw_key in parameters:
		if not raw_key is String and not raw_key is StringName:
			errors.append("%s has a non-string parameter key" % owner)
			continue
		var key := StringName(raw_key)
		if key.is_empty():
			errors.append("%s has an empty parameter key" % owner)
		var value: Variant = parameters[raw_key]
		if not _is_primitive(value):
			errors.append("%s parameter '%s' must be primitive" % [owner, key])
		elif value is float and not is_finite(value):
			errors.append("%s parameter '%s' must be finite" % [owner, key])
	errors.sort()
	return errors


static func _is_primitive(value: Variant) -> bool:
	return value is bool or value is int or value is float or value is String or value is StringName