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A JSON Schema Validator with complete support for the latest specifications.
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lib/jsv/resolver/internal.ex
defmodule JSV.Resolver.Internal do
alias JSV.Helpers.StringExt
@behaviour JSV.Resolver
@moduledoc """
A `JSV.Resolver` implementation that resolves URIs pointing to the application
code base or JSV code base.
A custom resolver implementation should delegate `jsv:` prefixed URIs to this
module to enable support of the internal resolutions features.
### Module based schemas
This resolver will resolve `jsv:module:MODULE` URIs where `MODULE` is a string
representation of an Elixir module. Modules pointed at with such references
MUST export a `json_schema/0` function that returns a normalized JSON schema
with binary keys and values.
"""
@uri_prefix "jsv:module:"
@impl true
def resolve(url, opts)
def resolve(@uri_prefix <> module_string, _) do
case StringExt.safe_string_to_existing_module(module_string) do
{:ok, module} -> {:ok, JSV.Schema.from_module(module)}
{:error, reason} -> {:error, reason}
end
rescue
e -> {:error, {:invalid_schema_module, e}}
end
def resolve(other, _) do
{:error, {:unsupported, other}}
end
@doc """
Returns a JSV internal URI for the given module.
### Example
iex> module_to_uri(Inspect.Opts)
"jsv:module:Elixir.Inspect.Opts"
"""
@spec module_to_uri(module) :: binary
def module_to_uri(module) when is_atom(module) do
@uri_prefix <> Atom.to_string(module)
end
end