1 // ASM: a very small and fast Java bytecode manipulation framework 2 // Copyright (c) 2000-2011 INRIA, France Telecom 3 // All rights reserved. 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions 7 // are met: 8 // 1. Redistributions of source code must retain the above copyright 9 // notice, this list of conditions and the following disclaimer. 10 // 2. Redistributions in binary form must reproduce the above copyright 11 // notice, this list of conditions and the following disclaimer in the 12 // documentation and/or other materials provided with the distribution. 13 // 3. Neither the name of the copyright holders nor the names of its 14 // contributors may be used to endorse or promote products derived from 15 // this software without specific prior written permission. 16 // 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 // THE POSSIBILITY OF SUCH DAMAGE. 28 package org.objectweb.asm.tree; 29 30 import java.util.Map; 31 import org.objectweb.asm.ConstantDynamic; 32 import org.objectweb.asm.Handle; 33 import org.objectweb.asm.MethodVisitor; 34 import org.objectweb.asm.Opcodes; 35 import org.objectweb.asm.Type; 36 37 /** 38 * A node that represents an LDC instruction. 39 * 40 * @author Eric Bruneton 41 */ 42 public class LdcInsnNode extends AbstractInsnNode { 43 44 /** 45 * The constant to be loaded on the stack. This field must be a non null {@link Integer}, a {@link 46 * Float}, a {@link Long}, a {@link Double}, a {@link String}, a {@link Type} of OBJECT or ARRAY 47 * sort for {@code .class} constants, for classes whose version is 49, a {@link Type} of METHOD 48 * sort for MethodType, a {@link Handle} for MethodHandle constants, for classes whose version is 49 * 51 or a {@link ConstantDynamic} for a constant dynamic for classes whose version is 55. 50 */ 51 public Object cst; 52 53 /** 54 * Constructs a new {@link LdcInsnNode}. 55 * 56 * @param value the constant to be loaded on the stack. This parameter mist be a non null {@link 57 * Integer}, a {@link Float}, a {@link Long}, a {@link Double}, a {@link String}, a {@link 58 * Type} of OBJECT or ARRAY sort for {@code .class} constants, for classes whose version is 59 * 49, a {@link Type} of METHOD sort for MethodType, a {@link Handle} for MethodHandle 60 * constants, for classes whose version is 51 or a {@link ConstantDynamic} for a constant 61 * dynamic for classes whose version is 55. 62 */ LdcInsnNode(final Object value)63 public LdcInsnNode(final Object value) { 64 super(Opcodes.LDC); 65 this.cst = value; 66 } 67 68 @Override getType()69 public int getType() { 70 return LDC_INSN; 71 } 72 73 @Override accept(final MethodVisitor methodVisitor)74 public void accept(final MethodVisitor methodVisitor) { 75 methodVisitor.visitLdcInsn(cst); 76 acceptAnnotations(methodVisitor); 77 } 78 79 @Override clone(final Map<LabelNode, LabelNode> clonedLabels)80 public AbstractInsnNode clone(final Map<LabelNode, LabelNode> clonedLabels) { 81 return new LdcInsnNode(cst).cloneAnnotations(this); 82 } 83 } 84