diff options
Diffstat (limited to 'src/org/jetbrains/java/decompiler/code/Instruction.java')
| -rw-r--r-- | src/org/jetbrains/java/decompiler/code/Instruction.java | 224 |
1 files changed, 113 insertions, 111 deletions
diff --git a/src/org/jetbrains/java/decompiler/code/Instruction.java b/src/org/jetbrains/java/decompiler/code/Instruction.java index faa8926..2c0be6b 100644 --- a/src/org/jetbrains/java/decompiler/code/Instruction.java +++ b/src/org/jetbrains/java/decompiler/code/Instruction.java @@ -1,17 +1,18 @@ /* - * Fernflower - The Analytical Java Decompiler - * http://www.reversed-java.com + * Copyright 2000-2014 JetBrains s.r.o. * - * (C) 2008 - 2010, Stiver + * 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 * - * This software is NEITHER public domain NOR free software - * as per GNU License. See license.txt for more details. + * http://www.apache.org/licenses/LICENSE-2.0 * - * This software is distributed WITHOUT ANY WARRANTY; without - * even the implied warranty of MERCHANTABILITY or FITNESS FOR - * A PARTICULAR PURPOSE. + * 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 org.jetbrains.java.decompiler.code; import java.io.DataOutputStream; @@ -19,106 +20,107 @@ import java.io.IOException; public class Instruction implements CodeConstants { - // ***************************************************************************** - // public fields - // ***************************************************************************** - - public int opcode; - - public int group = CodeConstants.GROUP_GENERAL; - - public boolean wide = false; - - public int bytecode_version = BYTECODE_JAVA_LE_4; - - // ***************************************************************************** - // private fields - // ***************************************************************************** - - private int[] operands = null; - - // ***************************************************************************** - // public methods - // ***************************************************************************** - - public Instruction() {} - - public int length() { - return 1; - } - - public int operandsCount() { - return (operands==null)?0:operands.length; - } - - public int getOperand(int index) { - return operands[index]; - } - - public Instruction clone() { - return ConstantsUtil.getInstructionInstance(opcode, wide, group, bytecode_version, operands==null?null:(int[])operands.clone()); - } - - public String toString() { - - String res = wide?"@wide ":""; - res+="@"+ConstantsUtil.getName(opcode); - - int len = operandsCount(); - for(int i=0;i<len;i++) { - int op = operands[i]; - if(op<0) { - res+=" -"+Integer.toHexString(-op); - } else { - res+=" "+Integer.toHexString(op); - } - } - - return res; - - } - - public boolean canFallthrough() { - return opcode!=opc_goto && opcode!=opc_goto_w && opcode!=opc_ret && - !(opcode>=opc_ireturn && opcode<=opc_return) && opcode!=opc_athrow - && opcode!=opc_jsr && opcode!=opc_tableswitch && opcode!=opc_lookupswitch; - } - - public boolean equalsInstruction(Instruction instr) { - if(opcode != instr.opcode || wide != instr.wide - || operandsCount() != instr.operandsCount()) { - return false; - } - - if(operands != null) { - for(int i=0;i<operands.length;i++) { - if(operands[i] != instr.getOperand(i)) { - return false; - } - } - } - - return true; - } - - // should be overwritten by subclasses - public void initInstruction(InstructionSequence seq) {} - - // should be overwritten by subclasses - public void writeToStream(DataOutputStream out, int offset) throws IOException { - out.writeByte(opcode); - } - - // ***************************************************************************** - // getter and setter methods - // ***************************************************************************** - - public int[] getOperands() { - return operands; - } - - public void setOperands(int[] operands) { - this.operands = operands; - } - + // ***************************************************************************** + // public fields + // ***************************************************************************** + + public int opcode; + + public int group = CodeConstants.GROUP_GENERAL; + + public boolean wide = false; + + public int bytecode_version = BYTECODE_JAVA_LE_4; + + // ***************************************************************************** + // private fields + // ***************************************************************************** + + private int[] operands = null; + + // ***************************************************************************** + // public methods + // ***************************************************************************** + + public Instruction() { + } + + public int length() { + return 1; + } + + public int operandsCount() { + return (operands == null) ? 0 : operands.length; + } + + public int getOperand(int index) { + return operands[index]; + } + + public Instruction clone() { + return ConstantsUtil.getInstructionInstance(opcode, wide, group, bytecode_version, operands == null ? null : (int[])operands.clone()); + } + + public String toString() { + + String res = wide ? "@wide " : ""; + res += "@" + ConstantsUtil.getName(opcode); + + int len = operandsCount(); + for (int i = 0; i < len; i++) { + int op = operands[i]; + if (op < 0) { + res += " -" + Integer.toHexString(-op); + } + else { + res += " " + Integer.toHexString(op); + } + } + + return res; + } + + public boolean canFallthrough() { + return opcode != opc_goto && opcode != opc_goto_w && opcode != opc_ret && + !(opcode >= opc_ireturn && opcode <= opc_return) && opcode != opc_athrow + && opcode != opc_jsr && opcode != opc_tableswitch && opcode != opc_lookupswitch; + } + + public boolean equalsInstruction(Instruction instr) { + if (opcode != instr.opcode || wide != instr.wide + || operandsCount() != instr.operandsCount()) { + return false; + } + + if (operands != null) { + for (int i = 0; i < operands.length; i++) { + if (operands[i] != instr.getOperand(i)) { + return false; + } + } + } + + return true; + } + + // should be overwritten by subclasses + public void initInstruction(InstructionSequence seq) { + } + + // should be overwritten by subclasses + public void writeToStream(DataOutputStream out, int offset) throws IOException { + out.writeByte(opcode); + } + + // ***************************************************************************** + // getter and setter methods + // ***************************************************************************** + + public int[] getOperands() { + return operands; + } + + public void setOperands(int[] operands) { + this.operands = operands; + } } |