diff options
Diffstat (limited to 'guava/src/com/google/common/reflect/TypeToInstanceMap.java')
-rw-r--r-- | guava/src/com/google/common/reflect/TypeToInstanceMap.java | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/guava/src/com/google/common/reflect/TypeToInstanceMap.java b/guava/src/com/google/common/reflect/TypeToInstanceMap.java deleted file mode 100644 index 3b00820..0000000 --- a/guava/src/com/google/common/reflect/TypeToInstanceMap.java +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (C) 2012 The Guava Authors - * - * 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.google.common.reflect; - -import com.google.common.annotations.Beta; - -import java.util.Map; - -import javax.annotation.Nullable; - -/** - * A map, each entry of which maps a {@link TypeToken} to an instance of that type. - * In addition to implementing {@code Map}, the additional type-safe operations - * {@link #putInstance} and {@link #getInstance} are available. - * - * <p>Generally, implementations don't support {@link #put} and {@link #putAll} - * because there is no way to check an object at runtime to be an instance of a - * {@link TypeToken}. Instead, caller should use the type safe {@link #putInstance}. - * - * <p>Also, if caller suppresses unchecked warnings and passes in an {@code Iterable<String>} - * for type {@code Iterable<Integer>}, the map won't be able to detect and throw type error. - * - * <p>Like any other {@code Map<Class, Object>}, this map may contain entries - * for primitive types, and a primitive type and its corresponding wrapper type - * may map to different values. - * - * @param <B> the common supertype that all entries must share; often this is - * simply {@link Object} - * - * @author Ben Yu - * @since 13.0 - */ -@Beta -public interface TypeToInstanceMap<B> extends Map<TypeToken<? extends B>, B> { - - /** - * Returns the value the specified class is mapped to, or {@code null} if no - * entry for this class is present. This will only return a value that was - * bound to this specific class, not a value that may have been bound to a - * subtype. - * - * <p>{@code getInstance(Foo.class)} is equivalent to - * {@code getInstance(TypeToken.of(Foo.class))}. - */ - @Nullable - <T extends B> T getInstance(Class<T> type); - - /** - * Maps the specified class to the specified value. Does <i>not</i> associate - * this value with any of the class's supertypes. - * - * <p>{@code putInstance(Foo.class, foo)} is equivalent to - * {@code putInstance(TypeToken.of(Foo.class), foo)}. - * - * @return the value previously associated with this class (possibly {@code null}), - * or {@code null} if there was no previous entry. - */ - @Nullable - <T extends B> T putInstance(Class<T> type, @Nullable T value); - - /** - * Returns the value the specified type is mapped to, or {@code null} if no - * entry for this type is present. This will only return a value that was - * bound to this specific type, not a value that may have been bound to a subtype. - */ - @Nullable - <T extends B> T getInstance(TypeToken<T> type); - - /** - * Maps the specified type to the specified value. Does <i>not</i> associate - * this value with any of the type's supertypes. - * - * @return the value previously associated with this type (possibly {@code null}), - * or {@code null} if there was no previous entry. - */ - @Nullable - <T extends B> T putInstance(TypeToken<T> type, @Nullable T value); -} |