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src/jdk/internal/dynalink/beans/SimpleDynamicMethod.java@61ffdd1b89f2 (annotated)

src/jdk/internal/dynalink/beans/SimpleDynamicMethod.java

Thu, 24 May 2018 16:39:31 +0800

author

aoqi

date

Thu, 24 May 2018 16:39:31 +0800

changeset 1959

61ffdd1b89f2

parent 1539

684d430470f6

parent 1205

4112748288bb

permissions

-rw-r--r--

Merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25
aoqi@0	26	/*
aoqi@0	27	* This file is available under and governed by the GNU General Public
aoqi@0	28	* License version 2 only, as published by the Free Software Foundation.
aoqi@0	29	* However, the following notice accompanied the original version of this
aoqi@0	30	* file, and Oracle licenses the original version of this file under the BSD
aoqi@0	31	* license:
aoqi@0	32	*/
aoqi@0	33	/*
aoqi@0	34	Copyright 2009-2013 Attila Szegedi
aoqi@0	35
aoqi@0	36	Licensed under both the Apache License, Version 2.0 (the "Apache License")
aoqi@0	37	and the BSD License (the "BSD License"), with licensee being free to
aoqi@0	38	choose either of the two at their discretion.
aoqi@0	39
aoqi@0	40	You may not use this file except in compliance with either the Apache
aoqi@0	41	License or the BSD License.
aoqi@0	42
aoqi@0	43	If you choose to use this file in compliance with the Apache License, the
aoqi@0	44	following notice applies to you:
aoqi@0	45
aoqi@0	46	You may obtain a copy of the Apache License at
aoqi@0	47
aoqi@0	48	http://www.apache.org/licenses/LICENSE-2.0
aoqi@0	49
aoqi@0	50	Unless required by applicable law or agreed to in writing, software
aoqi@0	51	distributed under the License is distributed on an "AS IS" BASIS,
aoqi@0	52	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
aoqi@0	53	implied. See the License for the specific language governing
aoqi@0	54	permissions and limitations under the License.
aoqi@0	55
aoqi@0	56	If you choose to use this file in compliance with the BSD License, the
aoqi@0	57	following notice applies to you:
aoqi@0	58
aoqi@0	59	Redistribution and use in source and binary forms, with or without
aoqi@0	60	modification, are permitted provided that the following conditions are
aoqi@0	61	met:
aoqi@0	62	* Redistributions of source code must retain the above copyright
aoqi@0	63	notice, this list of conditions and the following disclaimer.
aoqi@0	64	* Redistributions in binary form must reproduce the above copyright
aoqi@0	65	notice, this list of conditions and the following disclaimer in the
aoqi@0	66	documentation and/or other materials provided with the distribution.
aoqi@0	67	* Neither the name of the copyright holder nor the names of
aoqi@0	68	contributors may be used to endorse or promote products derived from
aoqi@0	69	this software without specific prior written permission.
aoqi@0	70
aoqi@0	71	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
aoqi@0	72	IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
aoqi@0	73	TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
aoqi@0	74	PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER
aoqi@0	75	BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
aoqi@0	76	CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
aoqi@0	77	SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
aoqi@0	78	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
aoqi@0	79	WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
aoqi@0	80	OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
aoqi@0	81	ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
aoqi@0	82	*/
aoqi@0	83
aoqi@0	84	package jdk.internal.dynalink.beans;
aoqi@0	85
aoqi@0	86	import java.lang.invoke.MethodHandle;
aoqi@0	87	import java.lang.invoke.MethodHandles.Lookup;
aoqi@0	88	import java.lang.invoke.MethodType;
aoqi@0	89
aoqi@0	90	/**
aoqi@0	91	* A dynamic method bound to exactly one Java method or constructor that is not caller sensitive. Since its target is
aoqi@0	92	* not caller sensitive, this class pre-caches its method handle and always returns it from the call to
aoqi@0	93	* {@link #getTarget(Lookup)}. Can be used in general to represents dynamic methods bound to a single method handle,
aoqi@0	94	* even if that handle is not mapped to a Java method, i.e. as a wrapper around field getters/setters, array element
aoqi@0	95	* getters/setters, etc.
aoqi@0	96	*
aoqi@0	97	* @author Attila Szegedi
aoqi@0	98	*/
aoqi@0	99	class SimpleDynamicMethod extends SingleDynamicMethod {
aoqi@0	100	private final MethodHandle target;
attila@963	101	private final boolean constructor;
aoqi@0	102
aoqi@0	103	/**
aoqi@0	104	* Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle
aoqi@0	105	* signature.
aoqi@0	106	*
aoqi@0	107	* @param target the target method handle
aoqi@0	108	* @param clazz the class declaring the method
aoqi@0	109	* @param name the simple name of the method
aoqi@0	110	*/
attila@962	111	SimpleDynamicMethod(final MethodHandle target, final Class<?> clazz, final String name) {
attila@963	112	this(target, clazz, name, false);
attila@963	113	}
attila@963	114
attila@963	115	/**
attila@963	116	* Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle
attila@963	117	* signature.
attila@963	118	*
attila@963	119	* @param target the target method handle
attila@963	120	* @param clazz the class declaring the method
attila@963	121	* @param name the simple name of the method
attila@963	122	* @param constructor does this represent a constructor?
attila@963	123	*/
attila@963	124	SimpleDynamicMethod(final MethodHandle target, final Class<?> clazz, final String name, final boolean constructor) {
attila@1539	125	super(getName(target, clazz, name, constructor));
aoqi@0	126	this.target = target;
attila@963	127	this.constructor = constructor;
aoqi@0	128	}
aoqi@0	129
attila@1539	130	private static String getName(final MethodHandle target, final Class<?> clazz, final String name, final boolean constructor) {
attila@1539	131	return getMethodNameWithSignature(target.type(), constructor ? name : getClassAndMethodName(clazz, name), !constructor);
aoqi@0	132	}
aoqi@0	133
aoqi@0	134	@Override
aoqi@0	135	boolean isVarArgs() {
aoqi@0	136	return target.isVarargsCollector();
aoqi@0	137	}
aoqi@0	138
aoqi@0	139	@Override
aoqi@0	140	MethodType getMethodType() {
aoqi@0	141	return target.type();
aoqi@0	142	}
aoqi@0	143
aoqi@0	144	@Override
attila@962	145	MethodHandle getTarget(final Lookup lookup) {
aoqi@0	146	return target;
aoqi@0	147	}
attila@963	148
attila@963	149	@Override
attila@963	150	boolean isConstructor() {
attila@963	151	return constructor;
attila@963	152	}
aoqi@0	153	}