/* * JBoss, Home of Professional Open Source * Copyright 2011, Red Hat, Inc., and individual contributors * by the @authors tag. See the copyright.txt in the distribution for a * full listing of individual contributors. * * 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 * 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. */ /** * * @author <a href="http://community.jboss.org/people/LightGuard">Jason Porter</a> */ package org.jboss.solder.exception.filter; import java.text.MessageFormat; import java.util.HashMap; import java.util.Map; import org.jboss.solder.exception.filter.StackFrame; /** * Internal implementation of {@link StackFrame}. */ final class StackFrameImpl implements StackFrame { private StackTraceElement stackTraceElement; private final Map<String, StackFrame> markMap; private final int index; StackFrameImpl(final Throwable throwable) { this.index = 0; this.stackTraceElement = throwable.getStackTrace()[this.index]; this.markMap = new HashMap<String, StackFrame>(); } public StackFrameImpl(final StackFrameImpl copy, final StackTraceElement nextStackTraceElement, final int traceIndex) { this.stackTraceElement = nextStackTraceElement; this.markMap = copy.markMap; this.index = traceIndex; } @Override public StackTraceElement getStackTraceElement() { return this.stackTraceElement; } @Override public void mark(String tag) { this.markMap.put(tag, this); } @Override public StackFrame getMarkedFrame(String tag) { return this.markMap.get(tag); } @Override public boolean isMarkSet(String tag) { return this.markMap.containsKey(tag); } @Override public void clearMark(String tag) { this.markMap.remove(tag); } @Override public void setStackTraceElement(StackTraceElement element) { this.stackTraceElement = element; } @Override public int getIndex() { return this.index; } @Override public boolean equals(Object o) { if (this == o) { return true; } if (o == null || getClass() != o.getClass()) { return false; } StackFrameImpl that = (StackFrameImpl) o; if (index != that.index) { return false; } if (!markMap.equals(that.markMap)) { return false; } if (!stackTraceElement.equals(that.stackTraceElement)) { return false; } return true; } @Override public int hashCode() { int result = stackTraceElement.hashCode(); result = 31 * result + markMap.hashCode(); result = 31 * result + index; return result; } @Override public String toString() { return new StringBuilder(MessageFormat.format("Element Index: {0}", this.index)).append(", ") .append(MessageFormat.format("element: {0}", this.stackTraceElement)).append(", ") .append(MessageFormat.format("tags: {0}", this.markMap.keySet())).toString(); } }