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lib/absinthe/phase/schema/compile.ex
defmodule Absinthe.Phase.Schema.Compile do
@moduledoc false
alias Absinthe.Blueprint.Schema
def run(blueprint, opts) do
module_name = Module.concat(opts[:schema], Compiled)
%{schema_definitions: [schema]} = blueprint
type_ast = build_types(schema.type_artifacts)
directive_ast = build_directives(schema.directive_artifacts)
type_list =
Map.new(schema.type_definitions, fn type_def ->
{type_def.identifier, type_def.name}
end)
referenced_types =
for type_def <- schema.type_definitions,
type_def.__private__[:__absinthe_referenced__],
into: %{},
do: {type_def.identifier, type_def.name}
directive_list =
Map.new(schema.directive_definitions, fn type_def ->
{type_def.identifier, type_def.name}
end)
prototype_schema = Keyword.fetch!(opts, :prototype_schema)
metadata = build_metadata(schema)
implementors = build_implementors(schema)
body =
quote do
@moduledoc false
unquote_splicing(type_ast)
unquote_splicing(directive_ast)
def __absinthe_types__() do
__absinthe_types__(:referenced)
end
def __absinthe_types__(:referenced) do
unquote(Macro.escape(referenced_types))
end
def __absinthe_types__(:all) do
unquote(Macro.escape(type_list))
end
def __absinthe_directives__() do
unquote(Macro.escape(directive_list))
end
def __absinthe_interface_implementors__() do
unquote(Macro.escape(implementors))
end
def __absinthe_prototype_schema__() do
unquote(Macro.escape(prototype_schema))
end
unquote_splicing(metadata)
end
Module.create(module_name, body, Macro.Env.location(__ENV__))
{:ok, blueprint}
end
def build_metadata(schema) do
for type <- schema.type_definitions do
quote do
def __absinthe_reference__(unquote(type.identifier)) do
unquote(Macro.escape(type.__reference__))
end
end
end
end
def build_types(types) do
for type <- types do
if !type.definition,
do:
raise("""
No definition set!
#{inspect(type)}
""")
ast = Macro.escape(type, unquote: true)
quote do
def __absinthe_type__(unquote(type.identifier)) do
unquote(ast)
end
def __absinthe_type__(unquote(type.name)) do
unquote(ast)
end
end
end
|> Enum.concat([
quote do
def __absinthe_type__(_type) do
nil
end
end
])
end
def build_directives(directives) do
for type <- directives do
ast = Macro.escape(type)
quote do
def __absinthe_directive__(unquote(type.identifier)) do
unquote(ast)
end
def __absinthe_directive__(unquote(type.name)) do
unquote(ast)
end
end
end
|> Enum.concat([
quote do
def __absinthe_directive__(_type) do
nil
end
end
])
end
defp build_implementors(schema) do
schema.type_definitions
|> Enum.filter(&match?(%Schema.InterfaceTypeDefinition{}, &1))
|> Map.new(fn iface ->
implementors =
Schema.InterfaceTypeDefinition.find_implementors(iface, schema.type_definitions)
{iface.identifier, Enum.sort(implementors)}
end)
end
end