// Copyright (C) 2014 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// Package schema implements rtti for the binary system.
package schema

import (
	"android.googlesource.com/platform/tools/gpu/binary"
	"android.googlesource.com/platform/tools/gpu/binary/registry"
)

// binary: Schema = false
// binary: java.source = base/rpclib/src/main/java
// binary: java.package = com.android.tools.rpclib.schema
// binary: java.indent = "    "
// binary: java.member_prefix = m

// Type represents the common interface to all type objects in the schema.
type Type interface {
	binary.Object
	String() string
	Encode(e binary.Encoder, value interface{}) error
	Decode(d binary.Decoder) (interface{}, error)
	Skip(d binary.Decoder) error
	Typename() string
	Basename() string
}

type schema interface {
	Schema() *Class
}

// Returns the schema class for a binary class, if it has one.
func Of(class binary.Class) *Class {
	if s, ok := class.(*Class); ok {
		return s
	}
	if s, ok := class.(schema); ok {
		return s.Schema()
	}
	return nil
}

// Lookup looks up a Class by the given type id.
// If there is no match, it will return nil.
func Lookup(id binary.ID) *Class {
	return Of(registry.Global.Lookup(id))
}