| /******************************************************************************* |
| * Copyright (c) 2020, 2021 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.core.tests.rewrite.describing; |
| |
| import java.util.List; |
| |
| import org.eclipse.jdt.core.ICompilationUnit; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.dom.AST; |
| import org.eclipse.jdt.core.dom.ASTNode; |
| import org.eclipse.jdt.core.dom.Block; |
| import org.eclipse.jdt.core.dom.CompilationUnit; |
| import org.eclipse.jdt.core.dom.IfStatement; |
| import org.eclipse.jdt.core.dom.MethodDeclaration; |
| import org.eclipse.jdt.core.dom.PatternInstanceofExpression; |
| import org.eclipse.jdt.core.dom.SimpleName; |
| import org.eclipse.jdt.core.dom.SingleVariableDeclaration; |
| import org.eclipse.jdt.core.dom.TypeDeclaration; |
| import org.eclipse.jdt.core.dom.rewrite.ASTRewrite; |
| |
| import junit.framework.Test; |
| |
| public class ASTRewritingInstanceOfPatternExpressionTest extends ASTRewritingTest { |
| |
| |
| public ASTRewritingInstanceOfPatternExpressionTest(String name, int apiLevel) { |
| super(name, apiLevel); |
| } |
| |
| public static Test suite() { |
| return createSuite(ASTRewritingInstanceOfPatternExpressionTest.class, 16); |
| } |
| |
| @SuppressWarnings("deprecation") |
| @Override |
| protected void setUp() throws Exception { |
| super.setUp(); |
| if (this.apiLevel == AST.JLS16 ) { |
| this.project1.setOption(JavaCore.COMPILER_COMPLIANCE, JavaCore.VERSION_16); |
| this.project1.setOption(JavaCore.COMPILER_SOURCE, JavaCore.VERSION_16); |
| this.project1.setOption(JavaCore.COMPILER_CODEGEN_TARGET_PLATFORM, JavaCore.VERSION_16); |
| } |
| } |
| |
| @SuppressWarnings({ "rawtypes", "deprecation" }) |
| public void test001() throws Exception { |
| if (this.apiLevel != 16) { |
| System.err.println("Test "+getName()+" requires a JRE 16"); |
| return; |
| } |
| IPackageFragment pack1= this.sourceFolder.createPackageFragment("test1", false, null); |
| StringBuilder buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| ICompilationUnit cu= pack1.createCompilationUnit("X.java", buf.toString(), false, null); |
| |
| CompilationUnit astRoot= createAST(cu); |
| ASTRewrite rewrite= ASTRewrite.create(astRoot.getAST()); |
| |
| AST ast= astRoot.getAST(); |
| |
| assertTrue("Parse errors", (astRoot.getFlags() & ASTNode.MALFORMED) == 0); |
| TypeDeclaration type= findTypeDeclaration(astRoot, "X"); |
| MethodDeclaration methodDecl= findMethodDeclaration(type, "foo"); |
| Block block= methodDecl.getBody(); |
| List blockStatements= block.statements(); |
| assertTrue("Number of statements not 0", blockStatements.size() == 0); |
| { // add InstanceOfPattern expression |
| IfStatement ifStatement= ast.newIfStatement(); |
| PatternInstanceofExpression instanceOfExpression = ast.newPatternInstanceofExpression(); |
| instanceOfExpression.setLeftOperand(ast.newSimpleName("o"));//$NON-NLS-1$ |
| SingleVariableDeclaration singleVariableDeclaration = ast.newSingleVariableDeclaration(); |
| singleVariableDeclaration.setType(ast.newSimpleType(ast.newSimpleName("String")));//$NON-NLS-1$ |
| singleVariableDeclaration.setName(ast.newSimpleName("s")); |
| instanceOfExpression.setRightOperand(singleVariableDeclaration); |
| ifStatement.setExpression(instanceOfExpression); |
| ifStatement.setThenStatement(ast.newEmptyStatement()); |
| rewrite.getListRewrite(block, Block.STATEMENTS_PROPERTY).insertLast(ifStatement, null); |
| } |
| |
| String preview= evaluateRewrite(cu, rewrite); |
| |
| buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" if (o instanceof String s)\n"); |
| buf.append(" ;\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| |
| assertEqualString(preview, buf.toString()); |
| |
| } |
| |
| @SuppressWarnings({ "rawtypes", "deprecation" }) |
| public void test002() throws Exception { |
| if (this.apiLevel != 16) { |
| System.err.println("Test "+getName()+" requires a JRE 16"); |
| return; |
| } |
| IPackageFragment pack1= this.sourceFolder.createPackageFragment("test1", false, null); |
| StringBuilder buf= new StringBuilder(); |
| buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" if (o instanceof String s)\n"); |
| buf.append(" ;\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| ICompilationUnit cu= pack1.createCompilationUnit("X.java", buf.toString(), false, null); |
| |
| CompilationUnit astRoot= createAST(cu); |
| ASTRewrite rewrite= ASTRewrite.create(astRoot.getAST()); |
| |
| AST ast= astRoot.getAST(); |
| |
| assertTrue("Parse errors", (astRoot.getFlags() & ASTNode.MALFORMED) == 0); |
| TypeDeclaration type= findTypeDeclaration(astRoot, "X"); |
| MethodDeclaration methodDecl= findMethodDeclaration(type, "foo"); |
| Block block= methodDecl.getBody(); |
| List blockStatements= block.statements(); |
| assertTrue("Number of statements not 1", blockStatements.size() == 1); |
| { // add InstanceOfPattern expression |
| |
| IfStatement ifStatement = (IfStatement)blockStatements.get(0); |
| PatternInstanceofExpression instanceOfExpression = (PatternInstanceofExpression)ifStatement.getExpression(); |
| SingleVariableDeclaration singleVariableDeclaration = ast.newSingleVariableDeclaration(); |
| singleVariableDeclaration.setType(ast.newSimpleType(ast.newSimpleName("String")));//$NON-NLS-1$ |
| singleVariableDeclaration.setName(ast.newSimpleName("str1")); |
| rewrite.set(instanceOfExpression, PatternInstanceofExpression.RIGHT_OPERAND_PROPERTY, singleVariableDeclaration, null); |
| |
| } |
| |
| String preview= evaluateRewrite(cu, rewrite); |
| |
| buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" if (o instanceof String str1)\n"); |
| buf.append(" ;\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| |
| assertEqualString(preview, buf.toString()); |
| |
| } |
| |
| @SuppressWarnings({ "rawtypes", "deprecation" }) |
| public void test003() throws Exception { |
| if (this.apiLevel != 16) { |
| System.err.println("Test "+getName()+" requires a JRE 16"); |
| return; |
| } |
| IPackageFragment pack1= this.sourceFolder.createPackageFragment("test1", false, null); |
| StringBuilder buf= new StringBuilder(); |
| buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" if (o instanceof String s)\n"); |
| buf.append(" ;\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| ICompilationUnit cu= pack1.createCompilationUnit("X.java", buf.toString(), false, null); |
| |
| CompilationUnit astRoot= createAST(cu); |
| ASTRewrite rewrite= ASTRewrite.create(astRoot.getAST()); |
| |
| AST ast= astRoot.getAST(); |
| |
| assertTrue("Parse errors", (astRoot.getFlags() & ASTNode.MALFORMED) == 0); |
| TypeDeclaration type= findTypeDeclaration(astRoot, "X"); |
| MethodDeclaration methodDecl= findMethodDeclaration(type, "foo"); |
| Block block= methodDecl.getBody(); |
| List blockStatements= block.statements(); |
| assertTrue("Number of statements not 1", blockStatements.size() == 1); |
| { // change left side |
| IfStatement ifStatement = (IfStatement)blockStatements.get(0); |
| PatternInstanceofExpression expr = (PatternInstanceofExpression)ifStatement.getExpression(); |
| |
| SimpleName name= ast.newSimpleName("x"); |
| rewrite.replace(expr.getLeftOperand(), name, null); |
| } |
| |
| String preview= evaluateRewrite(cu, rewrite); |
| |
| buf= new StringBuilder(); |
| buf.append("package test1;\n"); |
| buf.append("public class X {\n"); |
| buf.append(" void foo(Object o) {\n"); |
| buf.append(" if (x instanceof String s)\n"); |
| buf.append(" ;\n"); |
| buf.append(" }\n"); |
| buf.append("}\n"); |
| |
| assertEqualString(preview, buf.toString()); |
| |
| } |
| } |