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J2V8 is a set of Java bindings for V8
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/*******************************************************************************
* Copyright (c) 2016 EclipseSource and others.
* 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:
* EclipseSource - initial API and implementation
******************************************************************************/
package com.eclipsesource.v8.debug.mirror;
import com.eclipsesource.v8.V8Array;
import com.eclipsesource.v8.V8Object;
/**
* Represents 'Object' mirrors.
*/
public class ObjectMirror extends ValueMirror {
private static final String PROPERTIES = "properties";
private static final String PROPERTY_NAMES = "propertyNames";
public enum PropertyKind {
Named(1), Indexed(2);
int index;
private PropertyKind(final int index) {
this.index = index;
}
}
@Override
public String toString() {
return v8Object.toString();
}
ObjectMirror(final V8Object v8Object) {
super(v8Object);
}
@Override
public boolean isObject() {
return true;
}
/**
* Returns all the property names for the given object.
*
* @param kind Indicate whether named, indexed or both kinds of properties are requested.
* @param limit Limit the number of properties returned to the specified value
* @return All the property names for a given object
*/
public String[] getPropertyNames(final PropertyKind kind, final int limit) {
V8Array parameters = new V8Array(v8Object.getRuntime());
parameters.push(kind.index);
parameters.push(limit);
V8Array propertyNames = null;
try {
propertyNames = v8Object.executeArrayFunction(PROPERTY_NAMES, parameters);
String[] result = new String[propertyNames.length()];
for (int i = 0; i < result.length; i++) {
result[i] = propertyNames.getString(i);
}
return result;
} finally {
parameters.release();
if (propertyNames != null) {
propertyNames.release();
}
}
}
/**
* Return the properties for this object as an array of PropertyMirror objects.
*
* @param kind Indicate whether named, indexed or both kinds of properties are requested
* @param limit Limit the number of properties returned to the specified value
* @return {Array} Property mirrors for this object
*/
public PropertiesArray getProperties(final PropertyKind kind, final int limit) {
V8Array parameters = new V8Array(v8Object.getRuntime());
parameters.push(kind.index);
parameters.push(limit);
V8Array result = null;
try {
result = v8Object.executeArrayFunction(PROPERTIES, parameters);
return new PropertiesArray(result);
} finally {
parameters.release();
if ((result != null) && !result.isReleased()) {
result.release();
result = null;
}
}
}
}