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342 lines
15 KiB
Java
342 lines
15 KiB
Java
/*
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* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8387965
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* @summary Tests a line number table attribute for pattern matching
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* @library /tools/lib /tools/javac/lib ../lib
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.main
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* jdk.compiler/com.sun.tools.javac.util
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* java.base/jdk.internal.classfile.impl
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* @build toolbox.ToolBox InMemoryFileManager TestBase
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* @build LineNumberTestBase TestCase
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* @run main PatternMatching
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*/
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import java.lang.classfile.ClassModel;
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import java.lang.classfile.CodeElement;
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import java.lang.classfile.CodeModel;
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import java.lang.classfile.Instruction;
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import java.lang.classfile.MethodModel;
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import java.lang.classfile.instruction.LineNumber;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.function.BiConsumer;
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import toolbox.ToolBox;
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public class PatternMatching extends LineNumberTestBase {
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static ToolBox tb = new ToolBox();
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public static void main(String[] args) throws Exception {
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new PatternMatching().test();
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}
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public void test() throws Exception {
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test(List.of(TEST_CASE));
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}
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private static final TestCase[] TEST_CASE = new TestCase[] {
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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Object obj = "abc"; // 3
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boolean isLong = obj instanceof String str // 4
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&& // 5
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true; // 6
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} // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 4, 7), true, new DetailedValidator(
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"line: 3",
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"LDC",
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"ASTORE_2",
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"line: 4",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_3",
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"line: 7",
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"RETURN"))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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Object obj = "abc"; // 3
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boolean isLong = true // 4
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&& // 5
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obj instanceof String str2; // 6
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} // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 6, 7), true, new DetailedValidator(
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"line: 3",
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"LDC",
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"ASTORE_2",
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"line: 6",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_3",
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"line: 7",
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"RETURN"
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))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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Object obj = "abc"; // 3
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boolean isLong = obj instanceof String str1 // 4
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&& // 5
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obj instanceof String str2; // 6
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} // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 4, 6, 7), true, new DetailedValidator(
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"line: 3",
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"LDC",
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"ASTORE_2",
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"line: 4",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"line: 6",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_3",
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"line: 7",
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"RETURN"
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))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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Object obj = "abc"; // 3
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boolean isLong = obj instanceof String str // 4
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&& // 5
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check(); // 6
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} // 7
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private boolean check() { return true; } // 8
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} // 9
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 4, 6, 7), true, new DetailedValidator(
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"line: 3",
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"LDC",
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"ASTORE_2",
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"line: 4",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"ALOAD_0",
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"line: 6",
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"INVOKEVIRTUAL",
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"IFEQ",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_3",
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"line: 7",
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"RETURN"))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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Object obj = "abc"; // 3
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boolean isLong = check() // 4
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&& // 5
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obj instanceof String str2; // 6
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} // 7
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private boolean check() { return true; } // 8
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} // 9
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 4, 6, 7), true, new DetailedValidator(
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"line: 3",
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"LDC",
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"ASTORE_2",
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"line: 4",
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"ALOAD_0",
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"INVOKEVIRTUAL",
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"IFEQ",
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"line: 6",
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"ALOAD_2",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD_2",
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"CHECKCAST",
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"ASTORE",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_3",
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"line: 7",
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"RETURN"
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))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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boolean isLong = obj() instanceof String str // 3
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&& // 4
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true; // 5
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} // 6
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private Object obj() { return "abc"; } // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 6), true, new DetailedValidator(
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"line: 3",
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"ALOAD_0",
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"INVOKEVIRTUAL",
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"ASTORE",
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"ALOAD",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD",
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"CHECKCAST",
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"ASTORE_3",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_2",
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"line: 6",
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"RETURN"))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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boolean isLong = true // 3
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&& // 4
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obj() instanceof String str; // 5
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} // 6
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private Object obj() { return "abc"; } // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(5, 6), true, new DetailedValidator(
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"line: 5",
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"ALOAD_0",
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"INVOKEVIRTUAL",
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"ASTORE",
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"ALOAD",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD",
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"CHECKCAST",
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"ASTORE_3",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_2",
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"line: 6",
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"RETURN"))),
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new TestCase("""
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public class PatternMatching { // 1
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private void test(String s) { // 2
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boolean isLong = obj() instanceof String str1 // 3
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&& // 4
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obj() instanceof String str2; // 5
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} // 6
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private Object obj() { return "abc"; } // 7
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} // 8
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""",
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"PatternMatching",
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new TestCase.MethodData("test", List.of(3, 5, 6), true, new DetailedValidator(
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"line: 3",
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"ALOAD_0",
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"INVOKEVIRTUAL",
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"ASTORE",
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"ALOAD",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD",
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"CHECKCAST",
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"ASTORE",
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"line: 5",
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"ALOAD_0",
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"INVOKEVIRTUAL",
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"ASTORE",
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"ALOAD",
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"INSTANCEOF",
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"IFEQ",
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"ALOAD",
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"CHECKCAST",
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"ASTORE_3",
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"ICONST_1",
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"GOTO",
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"ICONST_0",
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"ISTORE_2",
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"line: 6",
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"RETURN"))),
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};
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private static final class DetailedValidator implements BiConsumer<ClassModel, MethodModel> {
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private final List<String> expectedMethodContent;
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public DetailedValidator(String... expectedMethodContent) {
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this.expectedMethodContent = List.of(expectedMethodContent);
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}
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@Override
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public void accept(ClassModel classFile, MethodModel m) {
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CodeModel code = (CodeModel) m.code().get();
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List<String> methodContent = new ArrayList<>();
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for (CodeElement el : code) {
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switch (el) {
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case Instruction instr -> methodContent.add(instr.opcode().name());
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case LineNumber ln -> methodContent.add("line: " + ln.line());
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case CodeElement _ -> {}
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}
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}
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methodContent.forEach(System.err::println);
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tb.checkEqual(expectedMethodContent, methodContent);
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}
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}
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}
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