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/****************************************************************************
* Sangria *
* Copyright (C) 2014 Tavian Barnes <tavianator@tavianator.com> *
* *
* 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 com.tavianator.sangria.core;
import java.util.*;
import com.google.inject.Provider;
import com.google.inject.TypeLiteral;
import com.google.inject.util.Types;
/**
* Static utility functions for working with {@link TypeLiteral}s.
*
* @author Tavian Barnes (tavianator@tavianator.com)
* @version 1.1
* @since 1.1
*/
public class TypeLiterals {
private TypeLiterals() {
// Not for instantiating
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<List<T>> listOf(Class<T> type) {
return (TypeLiteral<List<T>>)TypeLiteral.get(Types.listOf(type));
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<List<T>> listOf(TypeLiteral<T> type) {
return (TypeLiteral<List<T>>)TypeLiteral.get(Types.listOf(type.getType()));
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<Set<T>> setOf(Class<T> type) {
return (TypeLiteral<Set<T>>)TypeLiteral.get(Types.setOf(type));
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<Set<T>> setOf(TypeLiteral<T> type) {
return (TypeLiteral<Set<T>>)TypeLiteral.get(Types.setOf(type.getType()));
}
@SuppressWarnings("unchecked")
public static <K, V> TypeLiteral<Map<K, V>> mapOf(Class<K> keyType, Class<V> valueType) {
return (TypeLiteral<Map<K, V>>)TypeLiteral.get(Types.mapOf(keyType, valueType));
}
@SuppressWarnings("unchecked")
public static <K, V> TypeLiteral<Map<K, V>> mapOf(Class<K> keyType, TypeLiteral<V> valueType) {
return (TypeLiteral<Map<K, V>>)TypeLiteral.get(Types.mapOf(keyType, valueType.getType()));
}
@SuppressWarnings("unchecked")
public static <K, V> TypeLiteral<Map<K, V>> mapOf(TypeLiteral<K> keyType, Class<V> valueType) {
return (TypeLiteral<Map<K, V>>)TypeLiteral.get(Types.mapOf(keyType.getType(), valueType));
}
@SuppressWarnings("unchecked")
public static <K, V> TypeLiteral<Map<K, V>> mapOf(TypeLiteral<K> keyType, TypeLiteral<V> valueType) {
return (TypeLiteral<Map<K, V>>)TypeLiteral.get(Types.mapOf(keyType.getType(), valueType.getType()));
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<Provider<T>> providerOf(Class<T> type) {
return (TypeLiteral<Provider<T>>)TypeLiteral.get(Types.providerOf(type));
}
@SuppressWarnings("unchecked")
public static <T> TypeLiteral<Provider<T>> providerOf(TypeLiteral<T> type) {
return (TypeLiteral<Provider<T>>)TypeLiteral.get(Types.providerOf(type.getType()));
}
}
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