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Apache BCEL Source Code Files
Apache BCEL Source Code Files are inside the Apache BCEL source package file like bcel-6.6.1-src.zip. Unzip the source package file and go to the "src/main" sub-directory, you will see source code files.
Here is the list of Java source code files of the Apache BCEL 6.6.1 in \Users\fyicenter\bcel-6.6.1\src:
✍: FYIcenter
⏎ org/apache/bcel/generic/LocalVariableInstruction.java
/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 org.apache.bcel.generic; import java.io.DataOutputStream; import java.io.IOException; import org.apache.bcel.Const; import org.apache.bcel.util.ByteSequence; /** * Abstract super class for instructions dealing with local variables. */ public abstract class LocalVariableInstruction extends Instruction implements TypedInstruction, IndexedInstruction { /** * @deprecated (since 6.0) will be made private; do not access directly, use getter/setter */ @Deprecated protected int n = -1; // index of referenced variable private short cTag = -1; // compact version, such as ILOAD_0 private short canonTag = -1; // canonical tag such as ILOAD /** * Empty constructor needed for Instruction.readInstruction. Also used by IINC()! */ LocalVariableInstruction() { } /** * Empty constructor needed for Instruction.readInstruction. Not to be used otherwise. tag and length are defined in * readInstruction and initFromFile, respectively. */ LocalVariableInstruction(final short canonTag, final short cTag) { this.canonTag = canonTag; this.cTag = cTag; } /** * @param opcode Instruction opcode * @param cTag Instruction number for compact version, ALOAD_0, e.g. * @param n local variable index (unsigned short) */ protected LocalVariableInstruction(final short opcode, final short cTag, final int n) { super(opcode, (short) 2); this.cTag = cTag; canonTag = opcode; setIndex(n); } /** * Dump instruction as byte code to stream out. * * @param out Output stream */ @Override public void dump(final DataOutputStream out) throws IOException { if (wide()) { out.writeByte(Const.WIDE); } out.writeByte(super.getOpcode()); if (super.getLength() > 1) { // Otherwise ILOAD_n, instruction, e.g. if (wide()) { out.writeShort(n); } else { out.writeByte(n); } } } /** * @return canonical tag for instruction, e.g., ALOAD for ALOAD_0 */ public short getCanonicalTag() { return canonTag; } /** * @return local variable index (n) referred by this instruction. */ @Override public final int getIndex() { return n; } /** * Returns the type associated with the instruction - in case of ALOAD or ASTORE Type.OBJECT is returned. This is just a * bit incorrect, because ALOAD and ASTORE may work on every ReferenceType (including Type.NULL) and ASTORE may even * work on a ReturnaddressType . * * @return type associated with the instruction */ @Override public Type getType(final ConstantPoolGen cp) { switch (canonTag) { case Const.ILOAD: case Const.ISTORE: return Type.INT; case Const.LLOAD: case Const.LSTORE: return Type.LONG; case Const.DLOAD: case Const.DSTORE: return Type.DOUBLE; case Const.FLOAD: case Const.FSTORE: return Type.FLOAT; case Const.ALOAD: case Const.ASTORE: return Type.OBJECT; default: throw new ClassGenException("Unknown case in switch" + canonTag); } } /** * Read needed data (e.g. index) from file. * * <pre> * (ILOAD <= tag <= ALOAD_3) || (ISTORE <= tag <= ASTORE_3) * </pre> */ @Override protected void initFromFile(final ByteSequence bytes, final boolean wide) throws IOException { if (wide) { n = bytes.readUnsignedShort(); super.setLength(4); } else { final short opcode = super.getOpcode(); if (opcode >= Const.ILOAD && opcode <= Const.ALOAD || opcode >= Const.ISTORE && opcode <= Const.ASTORE) { n = bytes.readUnsignedByte(); super.setLength(2); } else { if (opcode <= Const.ALOAD_3) { // compact load instruction such as ILOAD_2 n = (opcode - Const.ILOAD_0) % 4; } else { // Assert ISTORE_0 <= tag <= ASTORE_3 n = (opcode - Const.ISTORE_0) % 4; } super.setLength(1); } } } /** * Set the local variable index. also updates opcode and length TODO Why? * * @see #setIndexOnly(int) */ @Override public void setIndex(final int n) { // TODO could be package-protected? if (n < 0 || n > Const.MAX_SHORT) { throw new ClassGenException("Illegal value: " + n); } this.n = n; // Cannot be < 0 as this is checked above if (n <= 3) { // Use more compact instruction xLOAD_n super.setOpcode((short) (cTag + n)); super.setLength(1); } else { super.setOpcode(canonTag); if (wide()) { super.setLength(4); } else { super.setLength(2); } } } /** * Sets the index of the referenced variable (n) only * * @since 6.0 * @see #setIndex(int) */ final void setIndexOnly(final int n) { this.n = n; } /** * Long output format: * * <name of opcode> "["<opcode number>"]" "("<length of instruction>")" "<"< local variable * index>">" * * @param verbose long/short format switch * @return mnemonic for instruction */ @Override public String toString(final boolean verbose) { final short opcode = super.getOpcode(); if (opcode >= Const.ILOAD_0 && opcode <= Const.ALOAD_3 || opcode >= Const.ISTORE_0 && opcode <= Const.ASTORE_3) { return super.toString(verbose); } return super.toString(verbose) + " " + n; } private boolean wide() { return n > Const.MAX_BYTE; } }
⏎ org/apache/bcel/generic/LocalVariableInstruction.java
Or download all of them as a single archive file:
File name: bcel-6.6.1-sources.jar File size: 688374 bytes Release date: 2022-09-18 Download
⇒ Install Apache BCEL 6.5.0 Binary Package
⇐ Download and Install Apache BCEL Source Package
2021-08-21, 63035👍, 0💬
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