| /******************************************************************************* |
| * Copyright (c) 2009, 2018 Mountainminds GmbH & Co. KG and Contributors |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Evgeny Mandrikov - initial API and implementation |
| * |
| *******************************************************************************/ |
| package org.jacoco.core.internal.analysis.filter; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.objectweb.asm.Opcodes; |
| import org.objectweb.asm.tree.AbstractInsnNode; |
| import org.objectweb.asm.tree.MethodInsnNode; |
| import org.objectweb.asm.tree.VarInsnNode; |
| |
| abstract class AbstractMatcher { |
| |
| final Map<String, VarInsnNode> vars = new HashMap<String, VarInsnNode>(); |
| |
| AbstractInsnNode cursor; |
| |
| final void nextIsInvokeVirtual(final String owner, final String name) { |
| nextIs(Opcodes.INVOKEVIRTUAL); |
| if (cursor == null) { |
| return; |
| } |
| final MethodInsnNode m = (MethodInsnNode) cursor; |
| if (owner.equals(m.owner) && name.equals(m.name)) { |
| return; |
| } |
| cursor = null; |
| } |
| |
| final void nextIsVar(final int opcode, final String name) { |
| nextIs(opcode); |
| if (cursor == null) { |
| return; |
| } |
| final VarInsnNode actual = (VarInsnNode) cursor; |
| final VarInsnNode expected = vars.get(name); |
| if (expected == null) { |
| vars.put(name, actual); |
| } else if (expected.var != actual.var) { |
| cursor = null; |
| } |
| } |
| |
| /** |
| * Moves {@link #cursor} to next instruction if it has given opcode, |
| * otherwise sets it to <code>null</code>. |
| */ |
| final void nextIs(final int opcode) { |
| next(); |
| if (cursor == null) { |
| return; |
| } |
| if (cursor.getOpcode() != opcode) { |
| cursor = null; |
| } |
| } |
| |
| /** |
| * Moves {@link #cursor} to next instruction. |
| */ |
| final void next() { |
| if (cursor == null) { |
| return; |
| } |
| cursor = cursor.getNext(); |
| skipNonOpcodes(); |
| } |
| |
| final void skipNonOpcodes() { |
| while (cursor != null && (cursor.getType() == AbstractInsnNode.FRAME |
| || cursor.getType() == AbstractInsnNode.LABEL |
| || cursor.getType() == AbstractInsnNode.LINE)) { |
| cursor = cursor.getNext(); |
| } |
| } |
| |
| } |