| /******************************************************************************* |
| * Copyright (c) 2000, 2009 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.eval.ast.engine; |
| |
| |
| import java.util.Date; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.StringTokenizer; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.debug.core.DebugEvent; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IDebugEventFilter; |
| import org.eclipse.debug.core.model.ITerminate; |
| import org.eclipse.debug.core.model.IThread; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.Signature; |
| import org.eclipse.jdt.core.compiler.IProblem; |
| import org.eclipse.jdt.core.dom.AST; |
| import org.eclipse.jdt.core.dom.ASTParser; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.debug.core.IEvaluationRunnable; |
| import org.eclipse.jdt.debug.core.IJavaArray; |
| import org.eclipse.jdt.debug.core.IJavaArrayType; |
| import org.eclipse.jdt.debug.core.IJavaDebugTarget; |
| import org.eclipse.jdt.debug.core.IJavaInterfaceType; |
| import org.eclipse.jdt.debug.core.IJavaObject; |
| import org.eclipse.jdt.debug.core.IJavaReferenceType; |
| import org.eclipse.jdt.debug.core.IJavaStackFrame; |
| import org.eclipse.jdt.debug.core.IJavaThread; |
| import org.eclipse.jdt.debug.core.IJavaType; |
| import org.eclipse.jdt.debug.core.IJavaValue; |
| import org.eclipse.jdt.debug.core.IJavaVariable; |
| import org.eclipse.jdt.debug.core.JDIDebugModel; |
| import org.eclipse.jdt.debug.eval.IAstEvaluationEngine; |
| import org.eclipse.jdt.debug.eval.ICompiledExpression; |
| import org.eclipse.jdt.debug.eval.IEvaluationListener; |
| import org.eclipse.jdt.debug.eval.IEvaluationResult; |
| import org.eclipse.jdt.internal.debug.core.JDIDebugOptions; |
| import org.eclipse.jdt.internal.debug.core.JDIDebugPlugin; |
| import org.eclipse.jdt.internal.debug.core.model.JDIDebugTarget; |
| import org.eclipse.jdt.internal.debug.core.model.JDIThread; |
| import org.eclipse.jdt.internal.debug.core.model.JDIValue; |
| import org.eclipse.jdt.internal.debug.eval.EvaluationResult; |
| import org.eclipse.jdt.internal.debug.eval.ast.instructions.InstructionSequence; |
| |
| import com.sun.jdi.InvocationException; |
| import com.sun.jdi.ObjectReference; |
| |
| public class ASTEvaluationEngine implements IAstEvaluationEngine { |
| |
| private IJavaProject fProject; |
| |
| private IJavaDebugTarget fDebugTarget; |
| |
| /** |
| * Regex to find occurrences of 'this' in a code snippet |
| */ |
| private static Pattern fgThisPattern = Pattern.compile("(.*[^a-zA-Z0-9]+|^)(this)([^a-zA-Z0-9]+|$).*"); //$NON-NLS-1$ |
| |
| /** |
| * Filters variable change events during an evaluation to avoid refreshing the variables |
| * view until done. |
| */ |
| class EventFilter implements IDebugEventFilter { |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.core.IDebugEventFilter#filterDebugEvents(org.eclipse.debug.core.DebugEvent[]) |
| */ |
| public DebugEvent[] filterDebugEvents(DebugEvent[] events) { |
| if (events.length == 1) { |
| DebugEvent event = events[0]; |
| if (event.getSource() instanceof IJavaVariable && event.getKind() == DebugEvent.CHANGE) { |
| if (((IJavaVariable)event.getSource()).getDebugTarget().equals(getDebugTarget())) { |
| return null; |
| } |
| } |
| } |
| return events; |
| } |
| |
| } |
| |
| public ASTEvaluationEngine(IJavaProject project, IJavaDebugTarget debugTarget) { |
| setJavaProject(project); |
| setDebugTarget(debugTarget); |
| } |
| |
| public void setJavaProject(IJavaProject project) { |
| fProject = project; |
| } |
| |
| public void setDebugTarget(IJavaDebugTarget debugTarget) { |
| fDebugTarget = debugTarget; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IEvaluationEngine#evaluate(java.lang.String, org.eclipse.jdt.debug.core.IJavaStackFrame, org.eclipse.jdt.debug.eval.IEvaluationListener, int, boolean) |
| */ |
| public void evaluate(String snippet, IJavaStackFrame frame, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) throws DebugException { |
| traceCaller(snippet, frame.getThread()); |
| checkInterface(frame); |
| ICompiledExpression expression= getCompiledExpression(snippet, frame); |
| evaluateExpression(expression, frame, listener, evaluationDetail, hitBreakpoints); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IEvaluationEngine#evaluate(java.lang.String, org.eclipse.jdt.debug.core.IJavaObject, org.eclipse.jdt.debug.core.IJavaThread, org.eclipse.jdt.debug.eval.IEvaluationListener, int, boolean) |
| */ |
| public void evaluate(String snippet, IJavaObject thisContext, IJavaThread thread, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) throws DebugException { |
| traceCaller(snippet, thread); |
| ICompiledExpression expression= getCompiledExpression(snippet, thisContext); |
| evaluateExpression(expression, thisContext, thread, listener, evaluationDetail, hitBreakpoints); |
| } |
| |
| /** |
| * Writes a stack dump to trace the calling thread. |
| * |
| * @param snippet expression to evaluate |
| * @param thread thread to evaluate in |
| */ |
| private void traceCaller(String snippet, IThread thread) { |
| if (JDIDebugOptions.DEBUG_AST_EVAL_THREAD_TRACE) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append(JDIDebugOptions.FORMAT.format(new Date())); |
| buf.append(" : Evaluation Request Trace - Expression: "); //$NON-NLS-1$ |
| buf.append(snippet); |
| buf.append("\n\tThread: "); //$NON-NLS-1$ |
| try { |
| String name = thread.getName(); |
| buf.append('['); |
| buf.append(name); |
| buf.append("] "); //$NON-NLS-1$ |
| } catch (DebugException e) { |
| buf.append(thread.toString()); |
| } |
| System.out.println(buf.toString()); |
| System.out.flush(); |
| Thread.dumpStack(); |
| } |
| } |
| |
| /** |
| * Checks if the stack frame is declared in an interface an aborts |
| * if so. |
| * |
| * @param frame stack frame |
| * @throws DebugException if declaring type is an interface |
| */ |
| private void checkInterface(IJavaStackFrame frame) throws DebugException { |
| if (frame.getReferenceType() instanceof IJavaInterfaceType) { |
| IStatus status = new Status(IStatus.ERROR, JDIDebugModel.getPluginIdentifier(), DebugException.REQUEST_FAILED, |
| EvaluationEngineMessages.ASTEvaluationEngine_0, null); |
| throw new DebugException(status); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IAstEvaluationEngine#evaluateExpression(org.eclipse.jdt.debug.eval.ICompiledExpression, org.eclipse.jdt.debug.core.IJavaStackFrame, org.eclipse.jdt.debug.eval.IEvaluationListener, int, boolean) |
| */ |
| public void evaluateExpression(ICompiledExpression expression, IJavaStackFrame frame, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) throws DebugException { |
| traceCaller(expression.getSnippet(), frame.getThread()); |
| RuntimeContext context = new RuntimeContext(getJavaProject(), frame); |
| doEvaluation(expression, context, (IJavaThread)frame.getThread(), listener, evaluationDetail, hitBreakpoints); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IAstEvaluationEngine#evaluateExpression(org.eclipse.jdt.debug.eval.ICompiledExpression, org.eclipse.jdt.debug.core.IJavaObject, org.eclipse.jdt.debug.core.IJavaThread, org.eclipse.jdt.debug.eval.IEvaluationListener, int, boolean) |
| */ |
| public void evaluateExpression(ICompiledExpression expression, IJavaObject thisContext, IJavaThread thread, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) throws DebugException { |
| traceCaller(expression.getSnippet(), thread); |
| IRuntimeContext context = null; |
| if (thisContext instanceof IJavaArray) { |
| context = new ArrayRuntimeContext((IJavaArray) thisContext, thread, getJavaProject()); |
| } else { |
| context = new JavaObjectRuntimeContext(thisContext, getJavaProject(), thread); |
| } |
| doEvaluation(expression, context, thread, listener, evaluationDetail, hitBreakpoints); |
| } |
| |
| /** |
| * Evaluates the given expression in the given thread and the given runtime context. |
| */ |
| private void doEvaluation(ICompiledExpression expression, IRuntimeContext context, IJavaThread thread, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) throws DebugException { |
| if (expression instanceof InstructionSequence) { |
| // don't queue explicit evaluation if the thread is all ready performing an evaluation. |
| if (thread.isSuspended() && ((JDIThread)thread).isInvokingMethod() || thread.isPerformingEvaluation() && evaluationDetail == DebugEvent.EVALUATION) { |
| EvaluationResult result= new EvaluationResult(this, expression.getSnippet(), thread); |
| result.addError(EvaluationEngineMessages.ASTEvaluationEngine_Cannot_perform_nested_evaluations); |
| listener.evaluationComplete(result); |
| return; |
| } |
| thread.queueRunnable(new EvalRunnable((InstructionSequence)expression, thread, context, listener, evaluationDetail, hitBreakpoints)); |
| } else { |
| throw new DebugException(new Status(IStatus.ERROR, JDIDebugPlugin.getUniqueIdentifier(), IStatus.OK, EvaluationEngineMessages.ASTEvaluationEngine_AST_evaluation_engine_cannot_evaluate_expression, null)); |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IAstEvaluationEngine#getCompiledExpression(java.lang.String, org.eclipse.jdt.debug.core.IJavaStackFrame) |
| */ |
| public ICompiledExpression getCompiledExpression(String snippet, IJavaStackFrame frame) { |
| IJavaProject javaProject = getJavaProject(); |
| RuntimeContext context = new RuntimeContext(javaProject, frame); |
| |
| EvaluationSourceGenerator mapper = null; |
| CompilationUnit unit = null; |
| try { |
| IJavaVariable[] localsVar = context.getLocals(); |
| int numLocalsVar= localsVar.length; |
| Set names = new HashSet(); |
| // ****** |
| // to hide problems with local variable declare as instance of Local Types |
| // and to remove locals with duplicate names |
| IJavaVariable[] locals= new IJavaVariable[numLocalsVar]; |
| int numLocals= 0; |
| for (int i = 0; i < numLocalsVar; i++) { |
| if (!isLocalType(localsVar[i].getSignature()) && !names.contains(localsVar[i].getName())) { |
| locals[numLocals++]= localsVar[i]; |
| names.add(localsVar[i].getName()); |
| } |
| } |
| // to solve and remove |
| // ****** |
| String[] localTypesNames= new String[numLocals]; |
| String[] localVariables= new String[numLocals]; |
| for (int i = 0; i < numLocals; i++) { |
| localVariables[i] = locals[i].getName(); |
| localTypesNames[i] = Signature.toString(locals[i].getGenericSignature()).replace('/', '.'); |
| } |
| mapper = new EvaluationSourceGenerator(localTypesNames, localVariables, snippet); |
| // Compile in context of declaring type to get proper visibility of locals and members. |
| // Compiling in context of receiving type potentially provides access to more members, |
| // but does not allow access to privates members in declaring type |
| IJavaReferenceType receivingType = frame.getReferenceType(); |
| |
| // currently disabled - see bugs 99416 and 106492 |
| // if (frame.isStatic()) { |
| // receivingType= frame.getReferenceType(); |
| // } else { |
| // receivingType= (IJavaReferenceType) frame.getThis().getJavaType(); |
| // } |
| |
| unit = parseCompilationUnit(mapper.getSource(receivingType, javaProject, frame.isStatic()).toCharArray(), mapper.getCompilationUnitName(), javaProject); |
| } catch (CoreException e) { |
| InstructionSequence expression= new InstructionSequence(snippet); |
| expression.addError(e.getStatus().getMessage()); |
| return expression; |
| } |
| |
| return createExpressionFromAST(snippet, mapper, unit); |
| } |
| |
| private CompilationUnit parseCompilationUnit(char[] source, String unitName, IJavaProject project) { |
| ASTParser parser = ASTParser.newParser(AST.JLS3); |
| parser.setSource(source); |
| parser.setUnitName(unitName); |
| parser.setProject(project); |
| parser.setResolveBindings(true); |
| Map options=EvaluationSourceGenerator.getCompilerOptions(project); |
| parser.setCompilerOptions(options); |
| return (CompilationUnit) parser.createAST(null); |
| } |
| |
| // ****** |
| // to hide problems with local variable declare as instance of Local Types |
| private boolean isLocalType(String typeName) { |
| StringTokenizer strTok= new StringTokenizer(typeName,"$"); //$NON-NLS-1$ |
| strTok.nextToken(); |
| while (strTok.hasMoreTokens()) { |
| char char0= strTok.nextToken().charAt(0); |
| if ('0' <= char0 && char0 <= '9') { |
| return true; |
| } |
| } |
| return false; |
| } |
| // ****** |
| |
| /** |
| * Returns a compiled expression for an evaluation in the context of an array |
| * as a receiver. |
| */ |
| private ICompiledExpression getCompiledExpression(String snippet, IJavaArrayType arrayType) { |
| EvaluationSourceGenerator mapper = null; |
| CompilationUnit unit = null; |
| try { |
| IJavaProject javaProject = getJavaProject(); |
| // replace all occurrences of 'this' with '_a_t' |
| String newSnippet = replaceThisReferences(snippet); |
| |
| int dimension = 1; |
| IJavaType componentType = arrayType.getComponentType(); |
| while (componentType instanceof IJavaArrayType) { |
| componentType = ((IJavaArrayType)componentType).getComponentType(); |
| dimension++; |
| } |
| |
| // Primitive arrays are evaluated in the context of Object. |
| // Arrays with a base component type of a class or interface are treated |
| // as Object arrays and evaluated in Object. |
| String recTypeName = "java.lang.Object"; //$NON-NLS-1$ |
| String typeName = arrayType.getName(); |
| if (componentType instanceof IJavaReferenceType) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("java.lang.Object"); //$NON-NLS-1$ |
| for (int i = 0; i < dimension; i++) { |
| buf.append("[]"); //$NON-NLS-1$ |
| } |
| typeName = buf.toString(); |
| } |
| |
| |
| String[] localTypesNames= new String[]{typeName}; |
| String[] localVariables= new String[]{ArrayRuntimeContext.ARRAY_THIS_VARIABLE}; |
| mapper = new EvaluationSourceGenerator(localTypesNames, localVariables, newSnippet); |
| |
| |
| int index = typeName.indexOf('$'); |
| // if the argument is an inner type, compile in context of outer type so type is visible |
| if (index >= 0) { |
| recTypeName = typeName.substring(0, index); |
| } |
| IJavaType[] javaTypes = getDebugTarget().getJavaTypes(recTypeName); |
| if (javaTypes.length > 0) { |
| IJavaReferenceType recType = (IJavaReferenceType) javaTypes[0]; |
| unit = parseCompilationUnit(mapper.getSource(recType, getJavaProject(), false).toCharArray(), mapper.getCompilationUnitName(), javaProject); |
| } else { |
| IStatus status = new Status(IStatus.ERROR, JDIDebugPlugin.getUniqueIdentifier(), JDIDebugPlugin.ERROR, EvaluationEngineMessages.ASTEvaluationEngine_1, null); |
| throw new CoreException(status); |
| } |
| } catch (CoreException e) { |
| InstructionSequence expression= new InstructionSequence(snippet); |
| expression.addError(e.getStatus().getMessage()); |
| return expression; |
| } |
| |
| return createExpressionFromAST(snippet, mapper, unit); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IAstEvaluationEngine#getCompiledExpression(java.lang.String, org.eclipse.jdt.debug.core.IJavaObject) |
| */ |
| public ICompiledExpression getCompiledExpression(String snippet, IJavaObject thisContext) { |
| try { |
| if (thisContext instanceof IJavaArray) { |
| return getCompiledExpression(snippet, (IJavaArrayType)thisContext.getJavaType()); |
| } |
| return getCompiledExpression(snippet, (IJavaReferenceType)thisContext.getJavaType()); |
| } catch (DebugException e) { |
| InstructionSequence expression= new InstructionSequence(snippet); |
| expression.addError(e.getStatus().getMessage()); |
| return expression; |
| } |
| |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IAstEvaluationEngine#getCompiledExpression(java.lang.String, org.eclipse.jdt.debug.core.IJavaType) |
| */ |
| public ICompiledExpression getCompiledExpression(String snippet, IJavaReferenceType type) { |
| if (type instanceof IJavaArrayType) { |
| return getCompiledExpression(snippet, (IJavaArrayType)type); |
| } |
| IJavaProject javaProject = getJavaProject(); |
| |
| EvaluationSourceGenerator mapper = null; |
| CompilationUnit unit = null; |
| |
| mapper = new EvaluationSourceGenerator(new String[0], new String[0], snippet); |
| |
| try { |
| unit = parseCompilationUnit(mapper.getSource(type, javaProject, false).toCharArray(), mapper.getCompilationUnitName(), javaProject); |
| } catch (CoreException e) { |
| InstructionSequence expression= new InstructionSequence(snippet); |
| expression.addError(e.getStatus().getMessage()); |
| return expression; |
| } |
| return createExpressionFromAST(snippet, mapper, unit); |
| } |
| |
| /** |
| * Creates a compiled expression for the given snippet using the given mapper and |
| * compilation unit (AST). |
| * @param snippet the code snippet to be compiled |
| * @param mapper the object which will be used to create the expression |
| * @param unit the compilation unit (AST) generated for the snippet |
| */ |
| private ICompiledExpression createExpressionFromAST(String snippet, EvaluationSourceGenerator mapper, CompilationUnit unit) { |
| IProblem[] problems= unit.getProblems(); |
| if (problems.length != 0) { |
| boolean snippetError= false; |
| boolean runMethodError= false; |
| InstructionSequence errorSequence= new InstructionSequence(snippet); |
| int codeSnippetStart= mapper.getSnippetStart(); |
| int codeSnippetEnd= codeSnippetStart + mapper.getSnippet().length(); |
| int runMethodStart= mapper.getRunMethodStart(); |
| int runMethodEnd= runMethodStart + mapper.getRunMethodLength(); |
| for (int i = 0; i < problems.length; i++) { |
| IProblem problem= problems[i]; |
| int errorOffset= problem.getSourceStart(); |
| int problemId= problem.getID(); |
| if (problemId == IProblem.IsClassPathCorrect) { |
| errorSequence.addError(problem.getMessage()); |
| snippetError = true; |
| } |
| if (problemId == IProblem.VoidMethodReturnsValue |
| || problemId == IProblem.NotVisibleMethod |
| || problemId == IProblem.NotVisibleConstructor |
| || problemId == IProblem.NotVisibleField |
| || problemId == IProblem.NotVisibleType) { |
| continue; |
| } |
| if (problem.isError()) { |
| if (codeSnippetStart <= errorOffset && errorOffset <= codeSnippetEnd) { |
| errorSequence.addError(problem.getMessage()); |
| snippetError = true; |
| } else if (runMethodStart <= errorOffset && errorOffset <= runMethodEnd) { |
| runMethodError = true; |
| } |
| } |
| } |
| if (snippetError || runMethodError) { |
| if (runMethodError) { |
| errorSequence.addError(EvaluationEngineMessages.ASTEvaluationEngine_Evaluations_must_contain_either_an_expression_or_a_block_of_well_formed_statements_1); |
| } |
| return errorSequence; |
| } |
| } |
| |
| ASTInstructionCompiler visitor = new ASTInstructionCompiler(mapper.getSnippetStart(), snippet); |
| unit.accept(visitor); |
| |
| return visitor.getInstructions(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IEvaluationEngine#getJavaProject() |
| */ |
| public IJavaProject getJavaProject() { |
| return fProject; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IEvaluationEngine#getDebugTarget() |
| */ |
| public IJavaDebugTarget getDebugTarget() { |
| return fDebugTarget; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.debug.eval.IEvaluationEngine#dispose() |
| */ |
| public void dispose() { |
| } |
| |
| class EvalRunnable implements Runnable { |
| |
| private InstructionSequence fExpression; |
| |
| private IJavaThread fThread; |
| |
| private int fEvaluationDetail; |
| |
| private boolean fHitBreakpoints; |
| |
| private IRuntimeContext fContext; |
| |
| private IEvaluationListener fListener; |
| |
| public EvalRunnable(InstructionSequence expression, IJavaThread thread, IRuntimeContext context, IEvaluationListener listener, int evaluationDetail, boolean hitBreakpoints) { |
| fExpression= expression; |
| fThread= thread; |
| fContext= context; |
| fListener= listener; |
| fEvaluationDetail= evaluationDetail; |
| fHitBreakpoints= hitBreakpoints; |
| } |
| |
| public void run() { |
| if (JDIDebugOptions.DEBUG_AST_EVAL) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append(JDIDebugOptions.FORMAT.format(new Date())); |
| buf.append(" : AST Evaluation"); //$NON-NLS-1$ |
| buf.append("\n\tExpression: "); //$NON-NLS-1$ |
| buf.append(fExpression.getSnippet()); |
| buf.append("\n\tThread: "); //$NON-NLS-1$ |
| try { |
| String name = fThread.getName(); |
| buf.append('['); |
| buf.append(name); |
| buf.append("] "); //$NON-NLS-1$ |
| } catch (DebugException e) { |
| } |
| buf.append(fThread.toString()); |
| buf.append("\n\tDetail: "); //$NON-NLS-1$ |
| if (fEvaluationDetail == DebugEvent.EVALUATION) { |
| buf.append("EVALUATION"); //$NON-NLS-1$ |
| } else if (fEvaluationDetail == DebugEvent.EVALUATION_IMPLICIT) { |
| buf.append("EVALUATION_IMPLICIT"); //$NON-NLS-1$ |
| } else { |
| buf.append(fEvaluationDetail); |
| } |
| buf.append(" Hit Breakpoints: "); //$NON-NLS-1$ |
| buf.append(fHitBreakpoints); |
| System.out.println(buf.toString()); |
| } |
| EvaluationResult result = new EvaluationResult(ASTEvaluationEngine.this, fExpression.getSnippet(), fThread); |
| if (fExpression.hasErrors()) { |
| String[] errors = fExpression.getErrorMessages(); |
| for (int i = 0, numErrors = errors.length; i < numErrors; i++) { |
| result.addError(errors[i]); |
| } |
| evaluationFinished(result); |
| if (JDIDebugOptions.DEBUG_AST_EVAL) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("\tErrors: "); //$NON-NLS-1$ |
| for (int i = 0; i < errors.length; i++) { |
| if (i > 0) { |
| buf.append('\n'); |
| } |
| buf.append("\t\t"); //$NON-NLS-1$ |
| buf.append(errors[i]); |
| } |
| System.out.println(buf.toString()); |
| } |
| return; |
| } |
| final Interpreter interpreter = new Interpreter(fExpression, fContext); |
| |
| class EvaluationRunnable implements IEvaluationRunnable, ITerminate { |
| |
| CoreException fException; |
| boolean fTerminated = false; |
| |
| public void run(IJavaThread jt, IProgressMonitor pm) { |
| EventFilter filter = new EventFilter(); |
| try { |
| DebugPlugin.getDefault().addDebugEventFilter(filter); |
| interpreter.execute(); |
| } catch (CoreException exception) { |
| fException = exception; |
| if (fEvaluationDetail == DebugEvent.EVALUATION && exception.getStatus().getException() instanceof InvocationException) { |
| // print the stack trace for the exception if an *explicit* evaluation |
| InvocationException invocationException = (InvocationException)exception.getStatus().getException(); |
| ObjectReference exObject = invocationException.exception(); |
| IJavaObject modelObject = (IJavaObject)JDIValue.createValue((JDIDebugTarget)getDebugTarget(), exObject); |
| try { |
| modelObject.sendMessage("printStackTrace", "()V", null, jt, false); //$NON-NLS-1$ //$NON-NLS-2$ |
| } catch (DebugException e) { |
| // unable to print stack trace |
| } |
| } |
| } finally { |
| DebugPlugin.getDefault().removeDebugEventFilter(filter); |
| } |
| } |
| public void terminate() { |
| fTerminated = true; |
| interpreter.stop(); |
| } |
| public boolean canTerminate() { |
| return true; |
| } |
| public boolean isTerminated() { |
| return false; |
| } |
| |
| public CoreException getException() { |
| return fException; |
| } |
| } |
| |
| EvaluationRunnable er = new EvaluationRunnable(); |
| CoreException exception = null; |
| long start = System.currentTimeMillis(); |
| try { |
| fThread.runEvaluation(er, null, fEvaluationDetail, fHitBreakpoints); |
| } catch (DebugException e) { |
| exception = e; |
| } |
| long end = System.currentTimeMillis(); |
| |
| IJavaValue value = interpreter.getResult(); |
| |
| if (exception == null) { |
| exception = er.getException(); |
| } |
| |
| result.setTerminated(er.fTerminated); |
| if (exception != null) { |
| if (JDIDebugOptions.DEBUG_AST_EVAL) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("\tException: "); //$NON-NLS-1$ |
| buf.append(exception.toString()); |
| System.out.println(buf.toString()); |
| } |
| if (exception instanceof DebugException) { |
| result.setException((DebugException)exception); |
| } else { |
| result.setException(new DebugException(exception.getStatus())); |
| } |
| } else { |
| if (value != null) { |
| result.setValue(value); |
| if (JDIDebugOptions.DEBUG_AST_EVAL) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("\tResult: "); //$NON-NLS-1$ |
| buf.append(value); |
| System.out.println(buf.toString()); |
| } |
| } else { |
| result.addError(EvaluationEngineMessages.ASTEvaluationEngine_An_unknown_error_occurred_during_evaluation); |
| } |
| } |
| |
| if (JDIDebugOptions.DEBUG_AST_EVAL) { |
| StringBuffer buf = new StringBuffer(); |
| buf.append("\tDuration: "); //$NON-NLS-1$ |
| buf.append(end - start); |
| buf.append("ms"); //$NON-NLS-1$ |
| System.out.println(buf.toString()); |
| } |
| |
| evaluationFinished(result); |
| } |
| private void evaluationFinished(IEvaluationResult result) { |
| // only notify if plug-in not yet shutdown - bug# 8693 |
| if(JDIDebugPlugin.getDefault() != null) { |
| fListener.evaluationComplete(result); |
| } |
| } |
| |
| } |
| |
| /** |
| * Replaces references to 'this' with the 'array_this' variable. |
| * |
| * @param snippet code snippet |
| * @return snippet with 'this' references replaced |
| */ |
| public static String replaceThisReferences(String snippet) { |
| // replace all occurrences of 'this' with 'array_this' |
| StringBuffer updatedSnippet = new StringBuffer(); |
| Matcher matcher = fgThisPattern.matcher(snippet); |
| int start = 0; |
| while (matcher.find()) { |
| int end = matcher.start(2); |
| updatedSnippet.append(snippet.substring(start, end)); |
| updatedSnippet.append(ArrayRuntimeContext.ARRAY_THIS_VARIABLE); |
| start = end + 4; |
| } |
| if (start < snippet.length()) { |
| updatedSnippet.append(snippet.substring(start, snippet.length())); |
| } |
| return updatedSnippet.toString(); |
| } |
| } |
