DefaultTransformationSupport.java

/*
 * Copyright 2000-2016 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.transformations.impl;

import com.intellij.psi.PsiMethod;
import com.intellij.psi.PsiModifier;
import com.intellij.psi.PsiType;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.plugins.groovy.lang.psi.api.statements.GrField;
import org.jetbrains.plugins.groovy.lang.psi.impl.synthetic.GrAccessorMethodImpl;
import org.jetbrains.plugins.groovy.lang.psi.util.PsiUtil;
import org.jetbrains.plugins.groovy.transformations.AstTransformationSupport;
import org.jetbrains.plugins.groovy.transformations.TransformationContext;

import java.util.Collection;

import static org.jetbrains.plugins.groovy.lang.psi.util.GroovyPropertyUtils.*;

public class DefaultTransformationSupport implements AstTransformationSupport {

  @Override
  public void applyTransformation(@NotNull TransformationContext context) {
    for (GrField field : context.getFields()) {
      if (!field.isProperty()) continue;

      final String fieldName = field.getName();

      String nameNonBoolean = getGetterNameNonBoolean(fieldName);
      if (!hasContradictingMethods(context, nameNonBoolean, false)) {
        context.addMethod(new GrAccessorMethodImpl(field, false, nameNonBoolean));
        if (PsiType.BOOLEAN.equals(field.getDeclaredType())) {
          String nameBoolean = getGetterNameBoolean(fieldName);
          if (!hasContradictingMethods(context, nameBoolean, false)) {
            context.addMethod(new GrAccessorMethodImpl(field, false, nameBoolean));
          }
        }
      }

      if (!field.hasModifierProperty(PsiModifier.FINAL)) {
        String setterName = getSetterName(fieldName);
        if (!hasContradictingMethods(context, setterName, true)) {
          context.addMethod(new GrAccessorMethodImpl(field, true, setterName));
        }
      }
    }
  }

  public static boolean hasContradictingMethods(@NotNull TransformationContext helper, String name, boolean isSetter) {
    Collection<PsiMethod> methods = helper.findMethodsByName(name, true);
    final int paramCount = isSetter ? 1 : 0;
    for (PsiMethod method : methods) {
      if (paramCount != method.getParameterList().getParametersCount()) continue;
      if (helper.getCodeClass().equals(method.getContainingClass())) return true;
      if (PsiUtil.isAccessible(helper.getCodeClass(), method) && method.hasModifierProperty(PsiModifier.FINAL)) return true;
    }

    return false;
  }
}