// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.sdk.internal;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.chromium.sdk.JsScope;
import org.chromium.sdk.JsVariable;
/**
* A generic implementation of the JsScope interface.
*/
public class JsScopeImpl implements JsScope {
private final CallFrameImpl callFrameImpl;
private final ScopeMirror mirror;
private List<JsVariable> properties = null;
public JsScopeImpl(CallFrameImpl callFrameImpl, ScopeMirror mirror) {
this.callFrameImpl = callFrameImpl;
this.mirror = mirror;
}
public Type getType() {
Type type = CODE_TO_TYPE.get(mirror.getType());
if (type == null) {
type = Type.UNKNOWN;
}
return type;
}
public synchronized List<? extends JsVariable> getVariables() {
if (properties == null) {
ValueLoader valueLoader = callFrameImpl.getInternalContext().getValueLoader();
List<? extends PropertyReference> propertyRefs =
valueLoader.loadScopeFields(mirror.getIndex(), callFrameImpl.getIdentifier());
List<ValueMirror> propertyMirrors = valueLoader.getOrLoadValueFromRefs(propertyRefs);
properties = new ArrayList<JsVariable>(propertyMirrors.size());
for (int i = 0; i < propertyMirrors.size(); i++) {
// This name should be string. We are making it string as a fall-back strategy.
String varNameStr = propertyRefs.get(i).getName().toString();
properties.add(new JsVariableImpl(callFrameImpl.getInternalContext(),
propertyMirrors.get(i), varNameStr));
}
}
return properties;
}
private static final Map<Integer, Type> CODE_TO_TYPE;
static {
CODE_TO_TYPE = new HashMap<Integer, Type>();
CODE_TO_TYPE.put(0, Type.GLOBAL);
CODE_TO_TYPE.put(1, Type.LOCAL);
CODE_TO_TYPE.put(2, Type.WITH);
CODE_TO_TYPE.put(3, Type.CLOSURE);
CODE_TO_TYPE.put(4, Type.CATCH);
}
}