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/*******************************************************************************
* Copyright (c) 2000, 2008 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
* Sergey Prigogin (Google)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text.correction;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.cdt.core.model.ICModelMarker;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.core.model.ITranslationUnit;
import org.eclipse.cdt.internal.ui.dialogs.StatusInfo;
import org.eclipse.cdt.ui.CUIPlugin;
import org.eclipse.core.expressions.EvaluationContext;
import org.eclipse.core.expressions.EvaluationResult;
import org.eclipse.core.expressions.Expression;
import org.eclipse.core.expressions.ExpressionConverter;
import org.eclipse.core.expressions.ExpressionTagNames;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IStatus;
public final class ContributedProcessorDescriptor {
private final IConfigurationElement fConfigurationElement;
private Object fProcessorInstance;
private Boolean fStatus;
private boolean fLastResult;
private final Set<String> fHandledMarkerTypes;
private static final String ID = "id"; //$NON-NLS-1$
private static final String CLASS = "class"; //$NON-NLS-1$
private static final String HANDLED_MARKER_TYPES = "handledMarkerTypes"; //$NON-NLS-1$
private static final String MARKER_TYPE = "markerType"; //$NON-NLS-1$
public ContributedProcessorDescriptor(IConfigurationElement element, boolean testMarkerTypes) {
fConfigurationElement = element;
fProcessorInstance = null;
fStatus = null; // undefined
if (fConfigurationElement.getChildren(ExpressionTagNames.ENABLEMENT).length == 0) {
fStatus = Boolean.TRUE;
}
fHandledMarkerTypes = testMarkerTypes ? getHandledMarkerTypes(element) : null;
}
private Set<String> getHandledMarkerTypes(IConfigurationElement element) {
HashSet<String> map = new HashSet<String>(7);
IConfigurationElement[] children = element.getChildren(HANDLED_MARKER_TYPES);
for (IConfigurationElement element2 : children) {
IConfigurationElement[] types = element2.getChildren(MARKER_TYPE);
for (IConfigurationElement type : types) {
String attribute = type.getAttribute(ID);
if (attribute != null) {
map.add(attribute);
}
}
}
if (map.isEmpty()) {
map.add(ICModelMarker.TASK_MARKER);
}
return map;
}
public IStatus checkSyntax() {
IConfigurationElement[] children = fConfigurationElement.getChildren(ExpressionTagNames.ENABLEMENT);
if (children.length > 1) {
String id = fConfigurationElement.getAttribute(ID);
return new StatusInfo(IStatus.ERROR, "Only one < enablement > element allowed. Disabling " + id); //$NON-NLS-1$
}
return new StatusInfo(IStatus.OK, "Syntactically correct quick assist/fix processor"); //$NON-NLS-1$
}
private boolean matches(ITranslationUnit cunit) {
if (fStatus != null) {
return fStatus.booleanValue();
}
IConfigurationElement[] children = fConfigurationElement.getChildren(ExpressionTagNames.ENABLEMENT);
if (children.length == 1) {
try {
ExpressionConverter parser = ExpressionConverter.getDefault();
Expression expression = parser.perform(children[0]);
EvaluationContext evalContext = new EvaluationContext(null, cunit);
evalContext.addVariable("compilationUnit", cunit); //$NON-NLS-1$
ICProject cProject = cunit.getCProject();
String[] natures = cProject.getProject().getDescription().getNatureIds();
evalContext.addVariable("projectNatures", Arrays.asList(natures)); //$NON-NLS-1$
fLastResult = !(expression.evaluate(evalContext) != EvaluationResult.TRUE);
return fLastResult;
} catch (CoreException e) {
CUIPlugin.log(e);
}
}
fStatus = Boolean.FALSE;
return false;
}
public Object getProcessor(ITranslationUnit cunit) throws CoreException {
if (matches(cunit)) {
if (fProcessorInstance == null) {
fProcessorInstance = fConfigurationElement.createExecutableExtension(CLASS);
}
return fProcessorInstance;
}
return null;
}
public boolean canHandleMarkerType(String markerType) {
return fHandledMarkerTypes == null || fHandledMarkerTypes.contains(markerType);
}
}
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