| /******************************************************************************* |
| * Copyright (c) 2005, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.debug.ui.contentassist; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.debug.core.DebugException; |
| import org.eclipse.debug.core.model.IVariable; |
| import org.eclipse.debug.ui.DebugUITools; |
| import org.eclipse.jdt.core.IType; |
| import org.eclipse.jdt.debug.core.IJavaStackFrame; |
| import org.eclipse.jdt.debug.core.IJavaVariable; |
| import org.eclipse.jdt.internal.debug.core.JavaDebugUtils; |
| import org.eclipse.jdt.internal.debug.core.logicalstructures.JDIPlaceholderVariable; |
| import org.eclipse.jdt.internal.debug.core.model.JDIThisVariable; |
| import org.eclipse.jdt.internal.debug.core.model.SyntheticVariableUtils; |
| import org.eclipse.jdt.internal.debug.eval.ast.engine.ASTEvaluationEngine; |
| |
| |
| /** |
| * Provides a completion context for the active stack frame. |
| * |
| * @since 3.2 |
| */ |
| public class CurrentFrameContext extends TypeContext { |
| |
| /** |
| * Constructs a new completion context for the currently selected |
| * stack frame. |
| */ |
| public CurrentFrameContext() { |
| super(null, -1); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.internal.debug.ui.contentassist.IJavaDebugContentAssistContext#getType() |
| */ |
| @Override |
| public IType getType() throws CoreException { |
| IJavaStackFrame frame = getStackFrame(); |
| if (frame != null) { |
| IType type = JavaDebugUtils.resolveDeclaringType(frame); |
| if (type != null) { |
| return type; |
| } |
| } |
| return super.getType(); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.internal.debug.ui.contentassist.IJavaDebugContentAssistContext#getLocalVariables() |
| */ |
| @Override |
| public String[][] getLocalVariables() throws CoreException { |
| IJavaStackFrame frame = getStackFrame(); |
| if (frame != null) { |
| IVariable[] variables = extractVariables(frame); |
| int index = 0; |
| while (index < variables.length |
| && (variables[index] instanceof JDIThisVariable || JDIPlaceholderVariable.class.isAssignableFrom(variables[index].getClass()))) { |
| index++; |
| } |
| String[][] locals = new String[2][variables.length - index]; |
| for (int i = 0; i < locals[0].length; i++) { |
| IJavaVariable var = (IJavaVariable) variables[index]; |
| locals[0][i] = resolveVarName(var); |
| try { |
| locals[1][i] = var.getJavaType().getName(); |
| } |
| catch(DebugException de) { |
| locals[1][i] = var.getReferenceTypeName(); |
| } |
| index++; |
| } |
| return locals; |
| } |
| return super.getLocalVariables(); |
| } |
| |
| private IVariable[] extractVariables(IJavaStackFrame frame) throws DebugException { |
| ArrayList<IVariable> vars = new ArrayList<>(Arrays.asList(frame.getVariables())); |
| for (IVariable var : vars) { |
| if (var instanceof JDIThisVariable) { |
| vars.addAll(Arrays.asList(SyntheticVariableUtils.findSyntheticVariables(var.getValue().getVariables()))); |
| break; |
| } |
| } |
| return vars.toArray(new IVariable[0]); |
| } |
| |
| private String resolveVarName(IJavaVariable var) throws DebugException { |
| final String name = var.getName(); |
| if (name.startsWith(ASTEvaluationEngine.ANONYMOUS_VAR_PREFIX)) { |
| return name.substring(ASTEvaluationEngine.ANONYMOUS_VAR_PREFIX.length()); |
| } |
| return name; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jdt.internal.debug.ui.contentassist.IJavaDebugContentAssistContext#isStatic() |
| */ |
| @Override |
| public boolean isStatic() throws CoreException { |
| IJavaStackFrame frame = getStackFrame(); |
| if (frame != null) { |
| return frame.isStatic(); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns the currently active stack frame, or <code>null</code> |
| * if none. |
| * |
| * @return the currently active stack frame, or <code>null</code> |
| */ |
| protected IJavaStackFrame getStackFrame() { |
| IAdaptable debugContext = DebugUITools.getDebugContext(); |
| IJavaStackFrame frame = null; |
| if (debugContext != null) { |
| frame = debugContext.getAdapter(IJavaStackFrame.class); |
| } |
| return frame; |
| } |
| |
| |
| } |