/*
* Copyright 2003-2017 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jetbrains.mps.generator.impl.interpreted;
import jetbrains.mps.generator.GenerationCanceledException;
import jetbrains.mps.generator.impl.DefaultTemplateContext;
import jetbrains.mps.generator.impl.DismissTopMappingRuleException;
import jetbrains.mps.generator.impl.GenerationFailureException;
import jetbrains.mps.generator.impl.RuleUtil;
import jetbrains.mps.generator.impl.query.CreateRootCondition;
import jetbrains.mps.generator.impl.query.QueryKeyImpl;
import jetbrains.mps.generator.impl.query.QueryProviderBase;
import jetbrains.mps.generator.runtime.CreateRootRuleBase;
import jetbrains.mps.generator.runtime.TemplateContext;
import jetbrains.mps.generator.runtime.TemplateCreateRootRule;
import jetbrains.mps.generator.runtime.TemplateExecutionEnvironment;
import jetbrains.mps.generator.template.CreateRootRuleContext;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.mps.openapi.model.SNode;
import java.util.Collection;
public class TemplateCreateRootRuleInterpreted extends CreateRootRuleBase implements TemplateCreateRootRule {
private final SNode myRuleNode;
private final String myMappingName;
private CreateRootCondition myCondition;
public TemplateCreateRootRuleInterpreted(SNode ruleNode) {
super(ruleNode.getReference());
myRuleNode = ruleNode;
myMappingName = RuleUtil.getCreateRootRuleLabel(ruleNode);
}
@Override
public boolean isApplicable(@NotNull TemplateContext context) throws GenerationFailureException {
if (myCondition == null) {
SNode conditionFunction = RuleUtil.getCreateRootRuleCondition(myRuleNode);
if (conditionFunction != null) {
QueryKeyImpl identity = new QueryKeyImpl(getRuleNode(), conditionFunction.getNodeId(), myRuleNode);
myCondition = context.getEnvironment().getQueryProvider(getRuleNode()).getCreateRootRuleCondition(identity);
} else {
myCondition = new QueryProviderBase.Defaults();
}
}
return myCondition.check(new CreateRootRuleContext(context, getRuleNode()));
}
@Override
public Collection<SNode> apply(TemplateExecutionEnvironment environment) throws GenerationCanceledException, GenerationFailureException, DismissTopMappingRuleException {
SNode templateNode = RuleUtil.getCreateRootRuleTemplateNode(myRuleNode);
if (templateNode != null) {
return environment.getTemplateProcessor().apply(templateNode, new DefaultTemplateContext(environment, null, myMappingName));
} else {
environment.getLogger().error(getRuleNode(), "'create root' rule has no template");
return null;
}
}
}