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/*
* Copyright 2000-2014 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.intellij.debugger.engine;
import com.intellij.debugger.engine.evaluation.EvaluateException;
import com.intellij.debugger.engine.evaluation.EvaluationContextImpl;
import com.intellij.debugger.engine.evaluation.TextWithImportsImpl;
import com.intellij.debugger.engine.events.DebuggerContextCommandImpl;
import com.intellij.debugger.impl.EditorTextProvider;
import com.intellij.debugger.ui.impl.watch.WatchItemDescriptor;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Pair;
import com.intellij.openapi.util.Ref;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.xdebugger.XExpression;
import com.intellij.xdebugger.XSourcePosition;
import com.intellij.xdebugger.evaluation.XDebuggerEvaluator;
import com.intellij.xdebugger.impl.breakpoints.XExpressionImpl;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
/**
* @author egor
*/
public class JavaDebuggerEvaluator extends XDebuggerEvaluator {
private final DebugProcessImpl myDebugProcess;
private final JavaStackFrame myStackFrame;
public JavaDebuggerEvaluator(DebugProcessImpl debugProcess, JavaStackFrame stackFrame) {
myDebugProcess = debugProcess;
myStackFrame = stackFrame;
}
@Override
public void evaluate(@NotNull final String expression,
@NotNull final XEvaluationCallback callback,
@Nullable XSourcePosition expressionPosition) {
evaluate(XExpressionImpl.fromText(expression), callback, expressionPosition);
}
@Override
public void evaluate(@NotNull final XExpression expression,
@NotNull final XEvaluationCallback callback,
@Nullable XSourcePosition expressionPosition) {
myDebugProcess.getManagerThread().schedule(new DebuggerContextCommandImpl(myDebugProcess.getDebuggerContext()) {
@Override
public Priority getPriority() {
return Priority.NORMAL;
}
@Override
public void threadAction() {
WatchItemDescriptor descriptor = new WatchItemDescriptor(myDebugProcess.getProject(), TextWithImportsImpl.fromXExpression(
expression));
EvaluationContextImpl evalContext = myStackFrame.getFrameDebuggerContext().createEvaluationContext();
if (evalContext == null) {
callback.errorOccurred("Context is not available");
return;
}
descriptor.setContext(evalContext);
@SuppressWarnings("ThrowableResultOfMethodCallIgnored")
EvaluateException exception = descriptor.getEvaluateException();
if (exception != null) {
callback.errorOccurred(exception.getMessage());
return;
}
JavaDebugProcess process = myDebugProcess.getXdebugProcess();
if (process != null) {
callback.evaluated(JavaValue.create(null, descriptor, evalContext, process.getNodeManager(), true));
}
}
});
}
@Nullable
@Override
public TextRange getExpressionRangeAtOffset(final Project project, final Document document, final int offset, final boolean sideEffectsAllowed) {
final Ref<TextRange> currentRange = Ref.create(null);
PsiDocumentManager.getInstance(project).commitAndRunReadAction(new Runnable() {
@Override
public void run() {
PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(document);
if (psiFile == null) {
return;
}
PsiElement elementAtCursor = psiFile.findElementAt(offset);
if (elementAtCursor == null) {
return;
}
Pair<PsiElement, TextRange> pair = findExpression(elementAtCursor, sideEffectsAllowed);
if (pair != null) {
currentRange.set(pair.getSecond());
}
}
});
return currentRange.get();
}
@Nullable
private static Pair<PsiElement, TextRange> findExpression(PsiElement element, boolean allowMethodCalls) {
final EditorTextProvider textProvider = EditorTextProvider.EP.forLanguage(element.getLanguage());
if (textProvider != null) {
return textProvider.findExpression(element, allowMethodCalls);
}
return null;
}
}
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