plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/lang/psi/impl/statements/GrCatchClauseImpl.java

/*
 * Copyright 2000-2014 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 org.jetbrains.plugins.groovy.lang.psi.impl.statements;

import com.intellij.lang.ASTNode;
import com.intellij.psi.PsiElement;
import com.intellij.psi.ResolveState;
import com.intellij.psi.scope.PsiScopeProcessor;
import com.intellij.util.IncorrectOperationException;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.plugins.groovy.lang.lexer.GroovyTokenTypes;
import org.jetbrains.plugins.groovy.lang.psi.GroovyElementVisitor;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrCatchClause;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrOpenBlock;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.params.GrParameter;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.params.GrParameterList;
import org.jetbrains.plugins.groovy.lang.psi.impl.GroovyPsiElementImpl;
import org.jetbrains.plugins.groovy.lang.resolve.ResolveUtil;
import org.jetbrains.plugins.groovy.lang.resolve.processors.ClassHint;

/**
 * @author ilyas
 */
public class GrCatchClauseImpl extends GroovyPsiElementImpl implements GrCatchClause {
  public GrCatchClauseImpl(@NotNull ASTNode node) {
    super(node);
  }

  @Override
  public void accept(GroovyElementVisitor visitor) {
    visitor.visitCatchClause(this);
  }

  public String toString() {
    return "Catch clause";
  }

  @Override
  @Nullable
  public GrParameter getParameter() {
    return findChildByClass(GrParameter.class);
  }

  @Override
  public GrOpenBlock getBody() {
    return findChildByClass(GrOpenBlock.class);
  }

  @Override
  public boolean processDeclarations(@NotNull PsiScopeProcessor processor, @NotNull ResolveState state, PsiElement lastParent, @NotNull PsiElement place) {
    if (!ResolveUtil.shouldProcessProperties(processor.getHint(ClassHint.KEY))) return true;

    GrParameter parameter = getParameter();
    return parameter == null || ResolveUtil.processElement(processor, parameter, state);
  }

  @Override
  public GrParameter[] getParameters() {
    final GrParameter parameter = getParameter();
    return parameter != null ? new GrParameter[]{parameter} : GrParameter.EMPTY_ARRAY;
  }

  @Override
  public GrParameterList getParameterList() {
    return null;
  }

  @Override
  public boolean isVarArgs() {
    throw new IncorrectOperationException("Catch clause cannot have varargs");
  }

  @Override
  public PsiElement getRParenth() {
    return findChildByType(GroovyTokenTypes.mRPAREN);
  }

  @Override
  public PsiElement getLBrace() {
    return findChildByType(GroovyTokenTypes.mLCURLY);
  }
}