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/*******************************************************************************
* Copyright (c) 2014 Boeing.
* 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:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.script.dsl.typesystem;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.eclipse.osee.orcs.script.dsl.IExpressionResolver;
import org.eclipse.osee.orcs.script.dsl.orcsScriptDsl.OsExpression;
import com.google.inject.Inject;
/**
* @author Roberto E. Escobar
*/
public class OsExpressionResolver implements IExpressionResolver {
@Inject
private TimestampConverter tsConverter;
@Inject
private NumberConverter numberConverter;
private boolean isCycleProtected() {
return false;
}
@Override
public <T> List<T> resolve(Class<T> clazz, OsExpression expression) {
ExpressionValueResolver<T> resolver =
new ExpressionValueResolver<T>(tsConverter, numberConverter, clazz, isCycleProtected());
List<T> resolved = resolver.resolve(expression);
return resolved != null ? resolved : Collections.<T> emptyList();
}
@Override
public <T> T resolveSingle(Class<T> clazz, OsExpression expression) {
List<T> resolved = resolve(clazz, expression);
return resolved != null && !resolved.isEmpty() ? resolved.iterator().next() : null;
}
@Override
public <T> List<T> resolve(Class<T> clazz, List<OsExpression> expressions) {
List<T> toReturn = new ArrayList<>();
for (OsExpression expression : expressions) {
List<T> resolved = resolve(clazz, expression);
toReturn.addAll(resolved);
}
return toReturn;
}
@Override
public List<Class<?>> resolveType(OsExpression expression) {
ExpressionTypeResolver<Class<?>> resolver = new ExpressionTypeResolver<>(tsConverter, isCycleProtected());
List<Class<?>> resolved = resolver.resolve(expression);
return resolved != null ? resolved : Collections.<Class<?>> emptyList();
}
@Override
public Class<?> resolveTypeSingle(OsExpression expression) {
List<Class<?>> resolved = resolveType(expression);
return resolved != null && !resolved.isEmpty() ? resolved.iterator().next() : Void.class;
}
@Override
public List<Class<?>> resolveTypes(List<OsExpression> expressions) {
List<Class<?>> toReturn = new ArrayList<>();
for (OsExpression expression : expressions) {
List<Class<?>> resolved = resolveType(expression);
toReturn.addAll(resolved);
}
return toReturn;
}
}
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