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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* 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.
*/
package com.jetbrains.python.debugger;
import com.intellij.xdebugger.frame.XExecutionStack;
import com.intellij.xdebugger.frame.XStackFrame;
import org.jetbrains.annotations.NotNull;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
public class PyExecutionStack extends XExecutionStack {
private final PyDebugProcess myDebugProcess;
private final PyThreadInfo myThreadInfo;
private PyStackFrame myTopFrame;
public PyExecutionStack(@NotNull final PyDebugProcess debugProcess, @NotNull final PyThreadInfo threadInfo) {
super(threadInfo.getName());
myDebugProcess = debugProcess;
myThreadInfo = threadInfo;
}
@Override
public PyStackFrame getTopFrame() {
if (myTopFrame == null) {
final List<PyStackFrameInfo> frames = myThreadInfo.getFrames();
if (frames != null) {
myTopFrame = convert(myDebugProcess, frames.get(0));
}
}
return myTopFrame;
}
@Override
public void computeStackFrames(int firstFrameIndex, XStackFrameContainer container) {
if (myThreadInfo.getState() != PyThreadInfo.State.SUSPENDED) {
container.errorOccurred("Frames not available in non-suspended state");
return;
}
final List<PyStackFrameInfo> frames = myThreadInfo.getFrames();
if (frames != null && firstFrameIndex <= frames.size()) {
final List<PyStackFrame> xFrames = new LinkedList<PyStackFrame>();
for (int i = firstFrameIndex; i < frames.size(); i++) {
xFrames.add(convert(myDebugProcess, frames.get(i)));
}
container.addStackFrames(xFrames, true);
}
else {
container.addStackFrames(Collections.<XStackFrame>emptyList(), true);
}
}
private static PyStackFrame convert(final PyDebugProcess debugProcess, final PyStackFrameInfo frameInfo) {
return debugProcess.createStackFrame(frameInfo);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PyExecutionStack that = (PyExecutionStack)o;
if (myThreadInfo != null ? !myThreadInfo.equals(that.myThreadInfo) : that.myThreadInfo != null) return false;
return true;
}
@Override
public int hashCode() {
return myThreadInfo != null ? myThreadInfo.hashCode() : 0;
}
}
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