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/*******************************************************************************
* <copyright>
* Copyright (c) 2008 itemis AG 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:
* committers of openArchitectureWare - initial API and implementation
* </copyright>
*******************************************************************************/
package org.eclipse.xtend.typesystem.emf.check;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.emf.common.util.DiagnosticChain;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.emf.ecore.EValidator;
import org.eclipse.emf.mwe.core.issues.Issues;
import org.eclipse.emf.mwe.core.issues.IssuesImpl;
import org.eclipse.emf.mwe.core.issues.MWEDiagnostic;
import org.eclipse.emf.mwe.core.resources.ResourceLoader;
import org.eclipse.emf.mwe.core.resources.ResourceLoaderFactory;
import org.eclipse.emf.mwe.core.resources.ResourceLoaderImpl;
import org.eclipse.internal.xtend.xtend.ast.ExtensionFile;
import org.eclipse.xtend.check.CheckUtils;
import org.eclipse.xtend.expression.ExecutionContext;
import org.eclipse.xtend.expression.ExecutionContextImpl;
import org.eclipse.xtend.expression.ResourceManager;
import org.eclipse.xtend.expression.ResourceManagerDefaultImpl;
import org.eclipse.xtend.expression.TypeSystemImpl;
import org.eclipse.xtend.typesystem.emf.EmfMetaModel;
/**
* An implementation of {@link org.eclipse.emf.ecore.EValidator} that executes
* oAW checks. Further EValidators can be nested.
*
* Check files can be added with reparse option. If true, the check files are
* reparse on each validation.
*
* @author Jan Köhnlein
*/
public class CheckEValidatorAdapter implements EValidator {
private final Log log = LogFactory.getLog(CheckEValidatorAdapter.class);
private List<CheckFileWithContext> _checkFiles;
private EValidator _nestedValidator;
private EPackage _ePackage;
private ResourceManager _externalResourceManager;
public CheckEValidatorAdapter(EPackage ePackage) {
_ePackage = ePackage;
_checkFiles = new ArrayList<CheckFileWithContext>();
}
public CheckEValidatorAdapter(EPackage ePackage,
EValidator existingValidator) {
this(ePackage);
if (existingValidator != null) {
_nestedValidator = existingValidator;
}
}
public void addCheckFile(CheckFileWithContext checkFile) {
_checkFiles.add(checkFile);
}
public boolean validate(EObject eObject, DiagnosticChain diagnostics,
Map<Object, Object> context) {
return validate(eObject.eClass(), eObject, diagnostics, context);
}
public boolean validate(EClass eClass, EObject eObject,
DiagnosticChain diagnostics, Map<Object, Object> context) {
List<EObject> allElements = Collections.singletonList(eObject);
boolean isValid = runOawCheck(diagnostics, allElements);
if (_nestedValidator != null) {
isValid &= _nestedValidator.validate(eClass, eObject, diagnostics,
context);
}
return isValid;
}
public boolean validate(EDataType dataType, Object value,
DiagnosticChain diagnostics, Map<Object, Object> context) {
List<?> allElements = Collections.singletonList(dataType);
boolean isValid = runOawCheck(diagnostics, allElements);
if (_nestedValidator != null) {
isValid &= _nestedValidator.validate(dataType, value, diagnostics,
context);
}
return isValid;
}
public void setExternalResourceManager(ResourceManager externalResourceManager) {
_externalResourceManager = externalResourceManager;
}
private ResourceManager getResourceManager() {
if(_externalResourceManager != null) {
return _externalResourceManager;
}
return new ResourceManagerDefaultImpl();
}
private ExecutionContext createExecutionContext(
CheckFileWithContext checkFile, ResourceManager resourceManager) {
final Set<EPackage> allEPackages = new HashSet<EPackage>();
allEPackages.add(_ePackage);
for (String nsURI : checkFile.getImportedEPackageNsUris()) {
try {
EPackage importedEPackage = EPackage.Registry.INSTANCE
.getEPackage(nsURI);
if (importedEPackage != null) {
allEPackages.add(importedEPackage);
}
} catch (Exception exc) {
log.error(exc);
}
}
TypeSystemImpl typeSystem = new TypeSystemImpl();
typeSystem.registerMetaModel(new EmfMetaModel() {
private EPackage[] _allEPackages = allEPackages
.toArray(new EPackage[allEPackages.size()]);
@Override
protected EPackage[] allPackages() {
return _allEPackages;
}
});
ExecutionContext executionContext = new ExecutionContextImpl(
resourceManager, typeSystem, null);
return executionContext;
}
private boolean runOawCheck(DiagnosticChain diagnostics, List<?> allElements) {
boolean isValid = true;
ResourceLoader current = ResourceLoaderFactory.getCurrentThreadResourceLoader();
try {
ResourceLoaderFactory.setCurrentThreadResourceLoader(new ResourceLoaderImpl(getClass().getClassLoader()));
for (CheckFileWithContext checkFile : _checkFiles) {
Issues issues = new IssuesImpl();
ResourceManager resourceManager = getResourceManager();
ExtensionFile parsedCheckFile = (ExtensionFile) resourceManager
.loadResource(checkFile.getFileName(),
CheckUtils.FILE_EXTENSION);
if (parsedCheckFile==null)
throw new IllegalArgumentException("Couldn't find file "+checkFile.getFileName()+"."+CheckUtils.FILE_EXTENSION+". Maybe it has been misspelled or it's not on the classpath?");
ExecutionContext executionContext = createExecutionContext(checkFile, resourceManager);
runOawCheck(parsedCheckFile, allElements, diagnostics,
executionContext);
isValid &= issues.hasErrors();
}
} finally {
ResourceLoaderFactory.setCurrentThreadResourceLoader(current);
}
return isValid;
}
private Issues runOawCheck(ExtensionFile parsedCheckFile,
List<?> allElements, DiagnosticChain diagnostics,
ExecutionContext executionContext) {
Issues issues = new IssuesImpl();
parsedCheckFile.check(executionContext, allElements, issues, false);
addDiagnosticFromIssues(diagnostics, issues);
return issues;
}
private void addDiagnosticFromIssues(
DiagnosticChain allDiagnostics, Issues issues) {
MWEDiagnostic[] errors = issues.getErrors();
addDiagnostics(allDiagnostics, errors);
MWEDiagnostic[] warnings = issues.getWarnings();
addDiagnostics(allDiagnostics, warnings);
}
private void addDiagnostics(DiagnosticChain allDiagnostics,
MWEDiagnostic[] issues) {
for (MWEDiagnostic issue : issues) {
allDiagnostics.add(issue);
}
}
}
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