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zoi
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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/default.ex
defmodule Zoi.Types.Default do
@moduledoc false
use Zoi.Type.Def, fields: [:inner, :value]
def opts() do
Zoi.Opts.meta_opts()
end
def new(inner, value, opts \\ []) do
opts
|> Keyword.merge(inner: inner, value: value)
|> apply_type()
end
defimpl Zoi.Type do
def parse(%Zoi.Types.Default{value: default_value}, nil, _opts) do
# Default value is short circuit, return without effects
{:ok, default_value}
end
def parse(%Zoi.Types.Default{inner: schema}, value, opts) do
Zoi.parse(schema, value, opts)
end
end
defimpl Zoi.TypeSpec do
def spec(%Zoi.Types.Default{inner: schema, value: nil}, opts) do
inner_spec = Zoi.TypeSpec.spec(schema, opts)
quote(do: nil | unquote(inner_spec))
end
def spec(%Zoi.Types.Default{inner: schema}, opts) do
Zoi.TypeSpec.spec(schema, opts)
end
end
defimpl Inspect do
def inspect(type, opts) do
# Default shows the inner type with a default field added
Zoi.Inspect.build(type.inner, opts, default: type.value)
end
end
defimpl Zoi.JSONSchema.Encoder do
def encode(%Zoi.Types.Default{inner: inner, value: default_value}) do
inner
|> Zoi.JSONSchema.encode_schema()
|> Map.put(:default, default_value)
end
end
defimpl Zoi.Describe.Encoder do
def encode(%Zoi.Types.Default{inner: inner}) do
Zoi.Describe.Encoder.encode(inner)
end
end
end