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Zoi is a schema validation library for Elixir, designed to provide a simple and flexible way to define and validate data.
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lib/zoi/types/struct.ex
defmodule Zoi.Types.Struct do
@moduledoc false
use Zoi.Type.Def, fields: [:module, :fields, :strict, :coerce, empty_values: []]
def new(module, fields, opts) when is_map(fields) or is_list(fields) do
fields =
fields
|> Enum.map(fn {key, type} ->
if type.meta.required == nil do
{key, Zoi.required(type)}
else
{key, type}
end
end)
keys = Enum.map(fields, fn {key, _type} -> key end)
if Enum.any?(keys, &(!is_atom(&1))) do
raise ArgumentError, "all keys in struct must be atoms"
end
opts =
Keyword.merge(
[strict: false, coerce: false],
opts
)
apply_type(opts ++ [module: module, fields: fields])
end
def new(_module, _fields, _opts) do
raise ArgumentError, "struct must receive a map"
end
defimpl Zoi.Type do
def parse(%Zoi.Types.Struct{module: module} = struct, %module{} = input, opts) do
input = Map.from_struct(input)
Zoi.Types.KeyValue.parse(struct, input, opts)
|> case do
{:ok, map} -> {:ok, struct!(module, map)}
error -> error
end
end
def parse(%Zoi.Types.Struct{module: module, coerce: true} = struct, input, opts)
when is_map(input) do
Zoi.Types.KeyValue.parse(struct, input, opts)
|> case do
{:ok, map} -> {:ok, struct!(module, map)}
error -> error
end
end
def parse(schema, _, _) do
{:error, Zoi.Error.invalid_type(:struct, error: schema.meta.error)}
end
def type_spec(%Zoi.Types.Struct{module: module, fields: fields}, opts) do
fields
|> Enum.map(fn {key, type} ->
{key, Zoi.Type.type_spec(type, opts), type}
end)
|> Enum.map(fn {key, type_spec, _type} ->
quote do: {unquote(key), unquote(type_spec)}
end)
|> then("e(do: %unquote(module){unquote_splicing(&1)}))
end
end
defimpl Inspect do
def inspect(type, opts) do
Zoi.Inspect.inspect_type(type, opts)
end
end
end