java/testFramework/src/com/intellij/testFramework/fixtures/JavaCodeInsightTestUtil.java

/*
 * Copyright 2000-2010 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 com.intellij.testFramework.fixtures;

import com.intellij.codeInsight.TargetElementUtilBase;
import com.intellij.openapi.application.Result;
import com.intellij.openapi.command.WriteCommandAction;
import com.intellij.openapi.editor.Editor;
import com.intellij.psi.*;
import com.intellij.refactoring.inline.InlineConstantFieldProcessor;
import com.intellij.refactoring.inline.InlineLocalHandler;
import com.intellij.refactoring.inline.InlineMethodProcessor;
import com.intellij.refactoring.inline.InlineParameterHandler;
import com.intellij.refactoring.util.InlineUtil;
import org.jetbrains.annotations.NotNull;


public class JavaCodeInsightTestUtil {
  private static final int TARGET_FOR_INLINE_FLAGS =
    TargetElementUtilBase.ELEMENT_NAME_ACCEPTED | TargetElementUtilBase.REFERENCED_ELEMENT_ACCEPTED;

  private JavaCodeInsightTestUtil() { }

  public static void doInlineLocalTest(@NotNull final CodeInsightTestFixture fixture,
                                       @NotNull final String before, @NotNull final String after) {
    fixture.configureByFile(before);
    new WriteCommandAction(fixture.getProject()) {
      @Override
      protected void run(final Result result) throws Throwable {
        final Editor editor = fixture.getEditor();
        final PsiElement element = TargetElementUtilBase.findTargetElement(editor, TARGET_FOR_INLINE_FLAGS);
        assert element instanceof PsiLocalVariable : element;
        InlineLocalHandler.invoke(fixture.getProject(), editor, (PsiLocalVariable)element, null);
      }
    }.execute();
    fixture.checkResultByFile(after, false);
  }

  public static void doInlineParameterTest(@NotNull final CodeInsightTestFixture fixture,
                                           @NotNull final String before, @NotNull final String after) {
    fixture.configureByFile(before);
    new WriteCommandAction(fixture.getProject()) {
      @Override
      protected void run(final Result result) throws Throwable {
        final Editor editor = fixture.getEditor();
        final PsiElement element = TargetElementUtilBase.findTargetElement(editor, TARGET_FOR_INLINE_FLAGS);
        assert element instanceof PsiParameter : element;
        new InlineParameterHandler().inlineElement(getProject(), editor, element);
      }
    }.execute();
    fixture.checkResultByFile(after, false);
  }

  public static void doInlineMethodTest(@NotNull final CodeInsightTestFixture fixture,
                                        @NotNull final String before, @NotNull final String after) {
    fixture.configureByFile(before);
    new WriteCommandAction(fixture.getProject()) {
      @Override
      protected void run(final Result result) throws Throwable {
        final Editor editor = fixture.getEditor();
        final PsiElement element = TargetElementUtilBase.findTargetElement(editor, TARGET_FOR_INLINE_FLAGS);
        assert element instanceof PsiMethod : element;

        final PsiReference ref = fixture.getFile().findReferenceAt(editor.getCaretModel().getOffset());
        final PsiReferenceExpression refExpr = ref instanceof PsiReferenceExpression ? (PsiReferenceExpression)ref : null;

        final PsiMethod method = (PsiMethod)element;
        assert !(InlineMethodProcessor.checkBadReturns(method) && !InlineUtil.allUsagesAreTailCalls(method)) : "Bad returns found";
        new InlineMethodProcessor(getProject(), method, refExpr, editor, false).run();
      }
    }.execute();
    fixture.checkResultByFile(after, false);
  }

  public static void doInlineConstantTest(@NotNull final CodeInsightTestFixture fixture,
                                          @NotNull final String before, @NotNull final String after) {
    fixture.configureByFile(before);
    new WriteCommandAction(fixture.getProject()) {
      @Override
      protected void run(final Result result) throws Throwable {
        final Editor editor = fixture.getEditor();
        final PsiElement element = TargetElementUtilBase.findTargetElement(editor, TARGET_FOR_INLINE_FLAGS);
        assert element instanceof PsiField : element;

        final PsiReference ref = fixture.getFile().findReferenceAt(editor.getCaretModel().getOffset());
        final PsiReferenceExpression refExpr = ref instanceof PsiReferenceExpression ? (PsiReferenceExpression)ref : null;

        new InlineConstantFieldProcessor((PsiField)element, getProject(), refExpr, false).run();
      }
    }.execute();
    fixture.checkResultByFile(after, false);
  }
}