/* | |
* Copyright (c) 2007 Mockito contributors | |
* This program is made available under the terms of the MIT License. | |
*/ | |
package org.mockito.internal.util; | |
import java.util.HashMap; | |
import java.util.Map; | |
@SuppressWarnings("unchecked") | |
public class Primitives { | |
private static final Map<Class<?>, Class<?>> PRIMITIVE_TYPES = new HashMap<Class<?>, Class<?>>(); | |
private static final Map<Class<?>, Object> PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES = new HashMap<Class<?>, Object>(); | |
/** | |
* Returns the primitive type of the given class. | |
* <p/> | |
* The passed class can be any class : <code>boolean.class</code>, <code>Integer.class</code> | |
* in witch case this method will return <code>boolean.class</code>, even <code>SomeObject.class</code> | |
* in which case <code>null</code> will be returned. | |
* | |
* @param clazz The class from which primitive type has to be retrieved | |
* @param <T> The type | |
* @return The primitive type if relevant, otherwise <code>null</code> | |
*/ | |
public static <T> Class<T> primitiveTypeOf(Class<T> clazz) { | |
if (clazz.isPrimitive()) { | |
return clazz; | |
} | |
return (Class<T>) PRIMITIVE_TYPES.get(clazz); | |
} | |
/** | |
* Indicates if the given class is primitive type or a primitive wrapper. | |
* | |
* @param type The type to check | |
* @return <code>true</code> if primitive or wrapper, <code>false</code> otherwise. | |
*/ | |
public static boolean isPrimitiveOrWrapper(Class<?> type) { | |
return PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.containsKey(type); | |
} | |
/** | |
* Returns the boxed default value for a primitive or a primitive wrapper. | |
* | |
* @param primitiveOrWrapperType The type to lookup the default value | |
* @return The boxed default values as defined in Java Language Specification, | |
* <code>null</code> if the type is neither a primitive nor a wrapper | |
*/ | |
public static <T> T defaultValueForPrimitiveOrWrapper(Class<T> primitiveOrWrapperType) { | |
return (T) PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.get(primitiveOrWrapperType); | |
} | |
static { | |
PRIMITIVE_TYPES.put(Boolean.class, Boolean.TYPE); | |
PRIMITIVE_TYPES.put(Character.class, Character.TYPE); | |
PRIMITIVE_TYPES.put(Byte.class, Byte.TYPE); | |
PRIMITIVE_TYPES.put(Short.class, Short.TYPE); | |
PRIMITIVE_TYPES.put(Integer.class, Integer.TYPE); | |
PRIMITIVE_TYPES.put(Long.class, Long.TYPE); | |
PRIMITIVE_TYPES.put(Float.class, Float.TYPE); | |
PRIMITIVE_TYPES.put(Double.class, Double.TYPE); | |
} | |
static { | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Boolean.class, false); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Character.class, '\u0000'); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Byte.class, (byte) 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Short.class, (short) 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Integer.class, 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Long.class, 0L); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Float.class, 0F); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(Double.class, 0D); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(boolean.class, false); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(char.class, '\u0000'); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(byte.class, (byte) 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(short.class, (short) 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(int.class, 0); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(long.class, 0L); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(float.class, 0F); | |
PRIMITIVE_OR_WRAPPER_DEFAULT_VALUES.put(double.class, 0D); | |
} | |
} |