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/*
* 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 com.intellij.codeInsight.template.postfix.util;
import com.intellij.codeInsight.generation.surroundWith.JavaExpressionSurrounder;
import com.intellij.codeInsight.generation.surroundWith.JavaWithIfExpressionSurrounder;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.*;
import com.intellij.psi.util.InheritanceUtil;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.refactoring.util.CommonRefactoringUtil;
import org.jetbrains.annotations.Contract;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public abstract class PostfixTemplatesUtils {
private PostfixTemplatesUtils() {
}
public static void showErrorHint(Project project, Editor editor) {
CommonRefactoringUtil.showErrorHint(project, editor, "Can't expand postfix template", "Can't expand postfix template", "");
}
public static void createSimpleStatement(@NotNull PsiElement context, @NotNull Editor editor, @NotNull String text) {
createStatement(context, editor, text + " ", "");
}
public static void createStatement(@NotNull PsiElement context, @NotNull Editor editor, @NotNull String prefix, @NotNull String suffix) {
createStatement(context, editor, prefix, suffix, 0);
}
public static void createStatement(@NotNull PsiElement context, @NotNull Editor editor, @NotNull String prefix, @NotNull String suffix, int offset) {
PsiExpression expr = getTopmostExpression(context);
PsiElement parent = expr != null ? expr.getParent() : null;
assert parent instanceof PsiStatement;
PsiElementFactory factory = JavaPsiFacade.getInstance(context.getProject()).getElementFactory();
PsiStatement statement = factory.createStatementFromText(prefix + expr.getText() + suffix + ";", parent);
PsiElement replace = parent.replace(statement);
editor.getCaretModel().moveToOffset(replace.getTextRange().getEndOffset() + offset);
}
@Contract("null -> false")
public static boolean isNotPrimitiveTypeExpression(@Nullable PsiExpression expression) {
return expression != null && !(expression.getType() instanceof PsiPrimitiveType);
}
@Contract("null -> false")
public static boolean isIterable(@Nullable PsiType type) {
return type != null && InheritanceUtil.isInheritor(type, CommonClassNames.JAVA_LANG_ITERABLE);
}
@Contract("null -> false")
public static boolean isThrowable(@Nullable PsiType type) {
return type != null && InheritanceUtil.isInheritor(type, CommonClassNames.JAVA_LANG_THROWABLE);
}
@Contract("null -> false")
public static boolean isArray(@Nullable PsiType type) {
return type != null && type instanceof PsiArrayType;
}
@Contract("null -> false")
public static boolean isBoolean(@Nullable PsiType type) {
return type != null && (PsiType.BOOLEAN.equals(type) || PsiType.BOOLEAN.equals(PsiPrimitiveType.getUnboxedType(type)));
}
@Contract("null -> false")
public static boolean isNonVoid(@Nullable PsiType type) {
return type != null && !PsiType.VOID.equals(type);
}
@Contract("null -> false")
public static boolean isNumber(@Nullable PsiType type) {
if (type == null) {
return false;
}
if (PsiType.INT.equals(type) || PsiType.BYTE.equals(type) || PsiType.LONG.equals(type)) {
return true;
}
PsiPrimitiveType unboxedType = PsiPrimitiveType.getUnboxedType(type);
return PsiType.INT.equals(unboxedType) || PsiType.BYTE.equals(unboxedType) || PsiType.LONG.equals(unboxedType);
}
@Nullable
public static TextRange ifStatement(@NotNull Project project, @NotNull Editor editor, @NotNull PsiExpression expr) {
JavaExpressionSurrounder surrounder = new JavaWithIfExpressionSurrounder();
PsiElement[] elements = {expr};
if (surrounder.isApplicable(elements)) {
return surrounder.surroundElements(project, editor, elements);
}
else {
showErrorHint(project, editor);
}
return null;
}
@Nullable
public static TextRange apply(@NotNull JavaExpressionSurrounder surrounder, @NotNull Project project, @NotNull Editor editor, @NotNull PsiExpression expr) {
PsiElement[] elements = {expr};
if (surrounder.isApplicable(elements)) {
return surrounder.surroundElements(project, editor, elements);
}
else {
showErrorHint(project, editor);
}
return null;
}
@Nullable
public static PsiExpression getTopmostExpression(PsiElement context) {
PsiExpressionStatement statement = PsiTreeUtil.getNonStrictParentOfType(context, PsiExpressionStatement.class);
return statement != null ? PsiTreeUtil.getChildOfType(statement, PsiExpression.class) : null;
}
}
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