| /* |
| * Copyright 2013, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| package org.jf.dexlib2.builder; |
| |
| import org.jf.dexlib2.iface.MethodImplementation; |
| import org.jf.dexlib2.iface.reference.StringReference; |
| import org.jf.dexlib2.iface.reference.TypeReference; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.Nullable; |
| import java.util.HashMap; |
| |
| public class MethodImplementationBuilder { |
| // Contains all named labels - both placed and unplaced |
| private final HashMap<String, Label> labels = new HashMap<String, Label>(); |
| |
| @Nonnull |
| private final MutableMethodImplementation impl; |
| |
| private MethodLocation currentLocation; |
| |
| public MethodImplementationBuilder(int registerCount) { |
| this.impl = new MutableMethodImplementation(registerCount); |
| this.currentLocation = impl.instructionList.get(0); |
| } |
| |
| public MethodImplementation getMethodImplementation() { |
| return impl; |
| } |
| |
| /** |
| * Adds a new named label at the current location. |
| * |
| * Any previous unplaced references to a label of this name will now refer to this label/location |
| * |
| * @param name The name of the label to add |
| * @return A LabelRef representing the label |
| */ |
| @Nonnull |
| public Label addLabel(@Nonnull String name) { |
| Label label = labels.get(name); |
| |
| if (label != null) { |
| if (label.isPlaced()) { |
| throw new IllegalArgumentException("There is already a label with that name."); |
| } else { |
| currentLocation.getLabels().add(label); |
| } |
| } else { |
| label = currentLocation.addNewLabel(); |
| labels.put(name, label); |
| } |
| |
| return label; |
| } |
| |
| /** |
| * Get a reference to a label with the given name. |
| * |
| * If a label with that name has not been added yet, a new one is created, but is left |
| * in an unplaced state. It is assumed that addLabel(name) will be called at a later |
| * point to define the location of the label. |
| * |
| * @param name The name of the label to get |
| * @return A LabelRef representing the label |
| */ |
| @Nonnull |
| public Label getLabel(@Nonnull String name) { |
| Label label = labels.get(name); |
| if (label == null) { |
| label = new Label(); |
| labels.put(name, label); |
| } |
| return label; |
| } |
| |
| public void addCatch(@Nullable TypeReference type, @Nonnull Label from, |
| @Nonnull Label to, @Nonnull Label handler) { |
| impl.addCatch(type, from, to, handler); |
| } |
| |
| public void addCatch(@Nullable String type, @Nonnull Label from, @Nonnull Label to, |
| @Nonnull Label handler) { |
| impl.addCatch(type, from, to, handler); |
| } |
| |
| public void addCatch(@Nonnull Label from, @Nonnull Label to, @Nonnull Label handler) { |
| impl.addCatch(from, to, handler); |
| } |
| |
| public void addLineNumber(int lineNumber) { |
| currentLocation.addLineNumber(lineNumber); |
| } |
| |
| public void addStartLocal(int registerNumber, @Nullable StringReference name, @Nullable TypeReference type, |
| @Nullable StringReference signature) { |
| currentLocation.addStartLocal(registerNumber, name, type, signature); |
| } |
| |
| public void addEndLocal(int registerNumber) { |
| currentLocation.addEndLocal(registerNumber); |
| } |
| |
| public void addRestartLocal(int registerNumber) { |
| currentLocation.addRestartLocal(registerNumber); |
| } |
| |
| public void addPrologue() { |
| currentLocation.addPrologue(); |
| } |
| |
| public void addEpilogue() { |
| currentLocation.addEpilogue(); |
| } |
| |
| public void addSetSourceFile(@Nullable StringReference sourceFile) { |
| currentLocation.addSetSourceFile(sourceFile); |
| } |
| |
| public void addInstruction(@Nullable BuilderInstruction instruction) { |
| impl.addInstruction(instruction); |
| currentLocation = impl.instructionList.get(impl.instructionList.size()-1); |
| } |
| } |