/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.javascript;
import java.io.Serializable;
/**
* This class represents an element on the script execution stack.
* @see RhinoException#getScriptStack()
* @author Hannes Wallnoefer
* @since 1.7R3
*/
public final class ScriptStackElement implements Serializable {
static final long serialVersionUID = -6416688260860477449L;
public final String fileName;
public final String functionName;
public final int lineNumber;
public ScriptStackElement(String fileName, String functionName, int lineNumber) {
this.fileName = fileName;
this.functionName = functionName;
this.lineNumber = lineNumber;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
renderMozillaStyle(sb);
return sb.toString();
}
/**
* Render stack element in Java-inspired style:
* <code> at fileName:lineNumber (functionName)</code>
* @param sb the StringBuilder to append to
*/
public void renderJavaStyle(StringBuilder sb) {
sb.append("\tat ").append(fileName);
if (lineNumber > -1) {
sb.append(':').append(lineNumber);
}
if (functionName != null) {
sb.append(" (").append(functionName).append(')');
}
}
/**
* Render stack element in Mozilla/Firefox style:
* <code>functionName()@fileName:lineNumber</code>
* @param sb the StringBuilder to append to
*/
public void renderMozillaStyle(StringBuilder sb) {
if (functionName != null) {
sb.append(functionName).append("()");
}
sb.append('@').append(fileName);
if (lineNumber > -1) {
sb.append(':').append(lineNumber);
}
}
/**
* Render stack element in V8 style:
* <code> at functionName (fileName:lineNumber:columnNumber)</code>
* or:
* <code> at fileName:lineNumber:columnNumber</code>
* @param sb the StringBuilder to append to
*/
public void renderV8Style(StringBuilder sb) {
sb.append(" at ");
if ((functionName == null) || "anonymous".equals(functionName) || "undefined".equals(functionName)) {
// Anonymous functions in V8 don't have names in the stack trace
appendV8Location(sb);
} else {
sb.append(functionName).append(" (");
appendV8Location(sb);
sb.append(')');
}
}
private void appendV8Location(StringBuilder sb)
{
sb.append(fileName);
if (lineNumber > -1) {
sb.append(':').append(lineNumber);
}
}
}