912 lines
38 KiB
Java
912 lines
38 KiB
Java
/*
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* Copyright (c) 2018, 2021, 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 8205418 8207229 8207230 8230847 8245786 8247334 8248641 8240658 8246774 8274347
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* @summary Test the outcomes from Trees.getScope
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.comp
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* jdk.compiler/com.sun.tools.javac.tree
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* jdk.compiler/com.sun.tools.javac.util
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*/
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import java.io.IOException;
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import java.net.URI;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import javax.lang.model.element.Element;
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import javax.tools.JavaCompiler;
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import javax.tools.SimpleJavaFileObject;
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import javax.tools.StandardJavaFileManager;
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import javax.tools.ToolProvider;
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import com.sun.source.tree.AnnotationTree;
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import com.sun.source.tree.BlockTree;
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import com.sun.source.tree.ClassTree;
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import com.sun.source.tree.CompilationUnitTree;
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import com.sun.source.tree.ConditionalExpressionTree;
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import com.sun.source.tree.IdentifierTree;
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import com.sun.source.tree.LambdaExpressionTree;
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import com.sun.source.tree.MethodInvocationTree;
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import com.sun.source.tree.MethodTree;
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import com.sun.source.tree.Scope;
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import com.sun.source.tree.Tree;
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import com.sun.source.tree.VariableTree;
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import com.sun.source.util.JavacTask;
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import com.sun.source.util.TaskEvent;
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import com.sun.source.util.TaskListener;
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import com.sun.source.util.TreePath;
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import com.sun.source.util.TreePathScanner;
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import com.sun.source.util.Trees;
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import com.sun.tools.javac.api.JavacScope;
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import com.sun.tools.javac.api.JavacTaskImpl;
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import com.sun.tools.javac.api.JavacTool;
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import com.sun.tools.javac.comp.Analyzer;
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import com.sun.tools.javac.comp.AttrContext;
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import com.sun.tools.javac.comp.Env;
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import com.sun.tools.javac.tree.JCTree;
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import com.sun.tools.javac.tree.JCTree.JCCase;
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import com.sun.tools.javac.tree.JCTree.JCStatement;
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import com.sun.tools.javac.util.Context;
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import com.sun.tools.javac.util.Context.Factory;
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import javax.lang.model.element.TypeElement;
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import javax.lang.model.util.ElementFilter;
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import javax.tools.JavaFileObject;
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import static javax.tools.JavaFileObject.Kind.SOURCE;
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public class TestGetScopeResult {
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public static void main(String... args) throws IOException {
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new TestGetScopeResult().run();
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new TestGetScopeResult().testAnalyzerDisabled();
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new TestGetScopeResult().testVariablesInSwitch();
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new TestGetScopeResult().testMemberRefs();
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new TestGetScopeResult().testAnnotations();
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new TestGetScopeResult().testAnnotationsLazy();
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new TestGetScopeResult().testCircular();
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new TestGetScopeResult().testRecord();
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new TestGetScopeResult().testLocalRecordAnnotation();
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new TestGetScopeResult().testRuleCases();
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new TestGetScopeResult().testNestedSwitchExpression();
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new TestGetScopeResult().testModuleImportScope();
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}
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public void run() throws IOException {
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String[] simpleLambda = {
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"s:java.lang.String",
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"i:Test.I",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { I i = s -> { }; } interface I { public void test(String s); } }",
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simpleLambda);
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doTest("class Test { void test() { I i = s -> { }; } interface I { public int test(String s); } }",
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simpleLambda);
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doTest("class Test { void test() { I i = s -> { }; } interface I { public String test(String s); } }",
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simpleLambda);
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doTest("class Test { void test() { I i; inv(s -> { }); } void inv(I i) { } interface I { public void test(String s); } }",
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simpleLambda);
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doTest("class Test { void test() { I i; inv(s -> { }); } void inv(I i) { } interface I { public int test(String s); } }",
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simpleLambda);
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doTest("class Test { void test() { I i; inv(s -> { }); } void inv(I i) { } interface I { public String test(String s); } }",
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simpleLambda);
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String[] dualLambda = {
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"s:java.lang.String",
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"i:Test.I1",
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"super:java.lang.Object",
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"this:Test",
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"s:java.lang.CharSequence",
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"i:Test.I1",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { I1 i; inv(s -> { }, s -> { }); } void inv(I1 i, I2 i) { } interface I1 { public String test(String s); } interface I2 { public void test(CharSequence s); } }",
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dualLambda);
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doTest("class Test { void test() { I1 i; inv(s -> { }, s -> { }); } void inv(I1 i, I2 i) { } interface I1 { public String test(String s); } interface I2 { public int test(CharSequence s); } }",
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dualLambda);
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String[] brokenType = {
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"s:<any>",
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"u:Undefined",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { Undefined u = s -> { }; } }",
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brokenType);
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String[] multipleCandidates1 = {
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"s:<any>",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand1(s -> { }); } void cand1(I1 i) { } void cand1(I2 i) { } interface I1 { public String test(String s); } interface I2 { public int test(CharSequence s); } }",
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multipleCandidates1);
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String[] multipleCandidates2 = {
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"s:java.lang.String",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand1(s -> { }); } void cand1(I1 i) { } void cand1(I2 i, int i) { } interface I1 { public String test(String s); } interface I2 { public int test(CharSequence s); } }",
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multipleCandidates2);
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String[] implicitExplicitConflict1 = {
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"<error>:t",
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"s:java.lang.String",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand((var s, t) -> \"\"); } void cand(I i) { } interface I { public String test(String s); } }",
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implicitExplicitConflict1);
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String[] implicitExplicitConflict2 = {
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"s:none",
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"<error>:t",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand((t, var s) -> \"\"); } void cand(I i) { } interface I { public String test(String s); } }",
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implicitExplicitConflict2);
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String[] noFunctionInterface = {
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"s:none",
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"<error>:t",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand((t, var s) -> \"\"); } void cand(String s) { } }",
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noFunctionInterface);
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String[] invocationInMethodInvocation = {
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"d2:java.lang.Double",
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"d1:java.lang.Double",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("""
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class Test {
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void test() { test(reduce(0.0, (d1, d2) -> 0)); }
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void test(int i) {}
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<T> T reduce(T t, BiFunction<T, T, T> f1) {}
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static interface BiFunction<R, P, Q> {
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R apply(P p, Q q);
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}
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}""",
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invocationInMethodInvocation);
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String[] infer = {
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"c:java.lang.String",
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"super:java.lang.Object",
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"this:Test"
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};
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doTest("class Test { void test() { cand(\"\", c -> { }); } <T>void cand(T t, I<T> i) { } interface I<T> { public String test(T s); } }",
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infer);
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doTest("class Test { void test() { cand(\"\", c -> { }); } <T>void cand(T t, I<T> i, int j) { } interface I<T> { public void test(T s); } }",
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infer);
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doTest("class Test { void test() { cand(\"\", c -> { }); } <T>void cand(T t, I<T> i, int j) { } interface I<T> { public String test(T s); } }",
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infer);
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}
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public void doTest(String code, String... expected) throws IOException {
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JavaCompiler c = ToolProvider.getSystemJavaCompiler();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return code;
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}
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}
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JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null, List.of(new MyFileObject()));
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CompilationUnitTree cut = t.parse().iterator().next();
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((JavacTaskImpl)t).enter();
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for (int r = 0; r < 2; r++) {
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List<String> actual = new ArrayList<>();
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitLambdaExpression(LambdaExpressionTree node, Void p) {
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Scope scope = Trees.instance(t).getScope(new TreePath(getCurrentPath(), node.getBody()));
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actual.addAll(dumpScope(scope));
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return super.visitLambdaExpression(node, p);
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}
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}.scan(cut, null);
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List<String> expectedList = List.of(expected);
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if (!expectedList.equals(actual)) {
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throw new IllegalStateException("Unexpected scope content: " + actual + "\n" +
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"expected: " + expectedList);
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}
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t.analyze();
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}
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}
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}
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void testAnalyzerDisabled() throws IOException {
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JavacTool c = JavacTool.create();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return "class Test {" +
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" void test() { cand(() -> { System.err.println(); }); }" +
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" Runnable r = new Runnable() { public void test() { System.err.println(); } };" +
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" void cand(Runnable r) { }" +
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"}";
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}
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}
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Context ctx = new Context();
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TestAnalyzer.preRegister(ctx);
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JavacTask t = (JavacTask) c.getTask(null, fm, null, List.of("-XDfind=lambda"), null,
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List.of(new MyFileObject()), ctx);
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CompilationUnitTree cut = t.parse().iterator().next();
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t.analyze();
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TestAnalyzer analyzer = (TestAnalyzer) TestAnalyzer.instance(ctx);
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if (!analyzer.analyzeCalled) {
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throw new IllegalStateException("Analyzer didn't run!");
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}
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitLambdaExpression(LambdaExpressionTree node, Void p) {
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analyzer.analyzeCalled = false;
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Trees.instance(t).getScope(new TreePath(getCurrentPath(), node.getBody()));
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if (analyzer.analyzeCalled) {
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throw new IllegalStateException("Analyzer was run during getScope!");
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}
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return super.visitLambdaExpression(node, p);
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}
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@Override
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public Void visitVariable(VariableTree node, Void p) {
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if (node.getInitializer() != null) {
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analyzer.analyzeCalled = false;
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TreePath tp = new TreePath(getCurrentPath(), node.getInitializer());
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Trees.instance(t).getScope(tp);
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if (analyzer.analyzeCalled) {
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throw new IllegalStateException("Analyzer was run during getScope!");
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}
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}
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return super.visitVariable(node, p);
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}
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}.scan(cut, null);
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}
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}
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private static final class TestAnalyzer extends Analyzer {
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public static void preRegister(Context context) {
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context.put(analyzerKey, (Factory<Analyzer>) ctx -> new TestAnalyzer(ctx));
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}
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private boolean analyzeCalled;
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public TestAnalyzer(Context context) {
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super(context);
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}
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@Override
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protected void analyze(JCStatement statement, Env<AttrContext> env) {
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analyzeCalled = true;
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super.analyze(statement, env);
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}
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}
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void testVariablesInSwitch() throws IOException {
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JavacTool c = JavacTool.create();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return "class Test {" +
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" void test() {\n" +
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" E e = E.A;\n" +
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" Object o = E.A;\n" +
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" switch (e) {\n" +
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" case A:\n" +
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" return;\n" +
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" case B:\n" +
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" test();\n" +
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" E ee = null;\n" +
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" break;\n" +
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" }\n" +
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" }\n" +
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" enum E {A, B}\n" +
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"}";
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}
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}
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Context ctx = new Context();
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TestAnalyzer.preRegister(ctx);
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JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
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List.of(new MyFileObject()), ctx);
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CompilationUnitTree cut = t.parse().iterator().next();
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t.analyze();
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitMethodInvocation(MethodInvocationTree node, Void p) {
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Trees.instance(t).getScope(getCurrentPath());
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return super.visitMethodInvocation(node, p);
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}
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}.scan(cut, null);
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}
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}
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void testMemberRefs() throws IOException {
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JavacTool c = JavacTool.create();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return "class Test {" +
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" void test() {\n" +
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" Test t = this;\n" +
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" Runnable r1 = t::test;\n" +
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" Runnable r2 = true ? t::test : t::test;\n" +
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" c(t::test);\n" +
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" c(true ? t::test : t::test);\n" +
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" }\n" +
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" void c(Runnable r) {}\n" +
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"}";
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}
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}
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Context ctx = new Context();
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TestAnalyzer.preRegister(ctx);
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JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
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List.of(new MyFileObject()), ctx);
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CompilationUnitTree cut = t.parse().iterator().next();
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t.analyze();
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitConditionalExpression(ConditionalExpressionTree node, Void p) {
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Trees.instance(t).getScope(new TreePath(getCurrentPath(), node.getCondition()));
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return super.visitConditionalExpression(node, p);
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}
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@Override
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public Void visitBlock(BlockTree node, Void p) {
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Trees.instance(t).getScope(getCurrentPath());
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return super.visitBlock(node, p);
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}
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}.scan(cut, null);
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}
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}
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void testAnnotations() throws IOException {
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JavacTool c = JavacTool.create();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
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public String getCharContent(boolean ignoreEncodingErrors) {
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return "class Test {" +
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" void test() {\n" +
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" new Object() {\n" +
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" @A\n" +
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" public String t() { return null; }\n" +
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" };\n" +
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" }\n" +
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" @interface A {}\n" +
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"}";
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}
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}
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Context ctx = new Context();
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TestAnalyzer.preRegister(ctx);
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JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
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List.of(new MyFileObject()), ctx);
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CompilationUnitTree cut = t.parse().iterator().next();
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t.analyze();
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new TreePathScanner<Void, Void>() {
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@Override
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public Void visitIdentifier(IdentifierTree node, Void p) {
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if (node.getName().contentEquals("A")) {
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Trees.instance(t).getScope(getCurrentPath());
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}
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return super.visitIdentifier(node, p);
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}
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@Override
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public Void visitMethod(MethodTree node, Void p) {
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super.visitMethod(node, p);
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if (node.getReturnType() != null) {
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Trees.instance(t).getScope(new TreePath(getCurrentPath(), node.getReturnType()));
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}
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return null;
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}
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}.scan(cut, null);
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}
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}
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void testAnnotationsLazy() throws IOException {
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JavacTool c = JavacTool.create();
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try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
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class MyFileObject extends SimpleJavaFileObject {
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MyFileObject() {
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super(URI.create("myfo:///Test.java"), SOURCE);
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}
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@Override
|
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public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return "import java.lang.annotation.*;\n" +
|
|
"\n" +
|
|
"class ClassA {\n" +
|
|
" Object o = ClassB.lcv;\n" +
|
|
"}\n" +
|
|
"\n" +
|
|
"class ClassB {\n" +
|
|
" static final String[] lcv = new @TA String[0];\n" +
|
|
"}\n" +
|
|
"\n" +
|
|
"class ClassC {\n" +
|
|
" static final Object o = (@TA Object) null;\n" +
|
|
"}\n" +
|
|
"\n" +
|
|
"@Target({ElementType.TYPE_USE, ElementType.TYPE_PARAMETER})\n" +
|
|
"@interface TA {}\n";
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
t.addTaskListener(new TaskListener() {
|
|
@Override
|
|
public void finished(TaskEvent e) {
|
|
if (e.getKind() == TaskEvent.Kind.ANALYZE) {
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void scan(Tree tree, Void p) {
|
|
if (tree != null) {
|
|
Trees.instance(t).getScope(new TreePath(getCurrentPath(), tree));
|
|
}
|
|
return super.scan(tree, p);
|
|
}
|
|
}.scan(Trees.instance(t).getPath(e.getTypeElement()), null);
|
|
}
|
|
}
|
|
});
|
|
|
|
t.call();
|
|
}
|
|
}
|
|
|
|
void testCircular() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
class MyFileObject extends SimpleJavaFileObject {
|
|
MyFileObject() {
|
|
super(URI.create("myfo:///Test.java"), SOURCE);
|
|
}
|
|
@Override
|
|
public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return "class Test extends Test {" +
|
|
" {\n" +
|
|
" int i;\n" +
|
|
" }\n" +
|
|
"}";
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void visitBlock(BlockTree node, Void p) {
|
|
Trees.instance(t).getScope(getCurrentPath());
|
|
return super.visitBlock(node, p);
|
|
}
|
|
}.scan(cut, null);
|
|
}
|
|
}
|
|
|
|
void testRecord() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
class MyFileObject extends SimpleJavaFileObject {
|
|
MyFileObject() {
|
|
super(URI.create("myfo:///Test.java"), SOURCE);
|
|
}
|
|
@Override
|
|
public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return "record Test<T>(int mark) {}";
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
List<String> actual = new ArrayList<>();
|
|
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void visitClass(ClassTree node, Void p) {
|
|
Scope scope = Trees.instance(t).getScope(getCurrentPath());
|
|
actual.addAll(dumpScope(scope));
|
|
return super.visitClass(node, p);
|
|
}
|
|
}.scan(cut, null);
|
|
|
|
List<String> expected = List.of(
|
|
"super:java.lang.Record",
|
|
"this:Test<T>",
|
|
"T:T"
|
|
);
|
|
|
|
if (!expected.equals(actual)) {
|
|
throw new AssertionError("Unexpected Scope content: " + actual);
|
|
}
|
|
}
|
|
}
|
|
|
|
void testLocalRecordAnnotation() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
class Variant {
|
|
final String code;
|
|
final List<List<String>> expectedScopeContent;
|
|
public Variant(String code, List<List<String>> expectedScopeContent) {
|
|
this.code = code;
|
|
this.expectedScopeContent = expectedScopeContent;
|
|
}
|
|
}
|
|
Variant[] variants = new Variant[] {
|
|
new Variant("""
|
|
class Test {
|
|
void t() {
|
|
record R(@Annotation int i) {
|
|
void stop () {}
|
|
}
|
|
}
|
|
}
|
|
@interface Annotation {}
|
|
""",
|
|
List.of(
|
|
List.of("super:java.lang.Object", "this:Test"),
|
|
List.of("super:java.lang.Object", "this:Test")
|
|
)),
|
|
new Variant("""
|
|
record Test(@Annotation int i) {}
|
|
@interface Annotation {}
|
|
""",
|
|
List.of(
|
|
List.of("i:int", "super:java.lang.Record", "this:Test"),
|
|
List.of("super:java.lang.Record", "this:Test")
|
|
))
|
|
};
|
|
for (Variant currentVariant : variants) {
|
|
class MyFileObject extends SimpleJavaFileObject {
|
|
MyFileObject() {
|
|
super(URI.create("myfo:///Test.java"), SOURCE);
|
|
}
|
|
@Override
|
|
public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return currentVariant.code;
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
List<List<String>> actual = new ArrayList<>();
|
|
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void visitAnnotation(AnnotationTree node, Void p) {
|
|
Scope scope = Trees.instance(t).getScope(getCurrentPath());
|
|
actual.add(dumpScope(scope));
|
|
return super.visitAnnotation(node, p);
|
|
}
|
|
}.scan(cut, null);
|
|
|
|
if (!currentVariant.expectedScopeContent.equals(actual)) {
|
|
throw new AssertionError("Unexpected Scope content: " + actual);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void testRuleCases() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
String code = """
|
|
class Test {
|
|
void t(int i) {
|
|
long local;
|
|
System.err.println(switch (i) {
|
|
case 0 -> {
|
|
String var;
|
|
int scopeHere;
|
|
yield "";
|
|
}
|
|
default -> {
|
|
String var;
|
|
int scopeHere;
|
|
yield "";
|
|
}
|
|
});
|
|
switch (i) {
|
|
case 0 -> {
|
|
String var;
|
|
int scopeHere;
|
|
}
|
|
default -> {
|
|
String var;
|
|
int scopeHere;
|
|
}
|
|
};
|
|
switch (i) {
|
|
case 0: {
|
|
int checkTree;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
""";
|
|
class MyFileObject extends SimpleJavaFileObject {
|
|
MyFileObject() {
|
|
super(URI.create("myfo:///Test.java"), SOURCE);
|
|
}
|
|
@Override
|
|
public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return code;
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
List<List<String>> actual = new ArrayList<>();
|
|
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void visitVariable(VariableTree node, Void p) {
|
|
if (node.getName().contentEquals("scopeHere")) {
|
|
Scope scope = Trees.instance(t).getScope(getCurrentPath());
|
|
actual.add(dumpScope(scope));
|
|
JCTree body = getCaseBody(scope);
|
|
if (body == null) {
|
|
throw new AssertionError("Unexpected null body.");
|
|
}
|
|
} else if (node.getName().contentEquals("checkTree")) {
|
|
Scope scope = Trees.instance(t).getScope(getCurrentPath());
|
|
JCTree body = getCaseBody(scope);
|
|
if (body != null) {
|
|
throw new AssertionError("Unexpected body tree: " + body);
|
|
}
|
|
}
|
|
return super.visitVariable(node, p);
|
|
}
|
|
JCTree getCaseBody(Scope scope) {
|
|
return ((JCCase) ((JavacScope) scope).getEnv().next.next.tree).body;
|
|
}
|
|
}.scan(cut, null);
|
|
|
|
List<List<String>> expected =
|
|
Collections.nCopies(4,
|
|
List.of("scopeHere:int",
|
|
"var:java.lang.String",
|
|
"local:long",
|
|
"i:int",
|
|
"super:java.lang.Object",
|
|
"this:Test"
|
|
));
|
|
|
|
if (!expected.equals(actual)) {
|
|
throw new AssertionError("Unexpected Scope content: " + actual);
|
|
}
|
|
}
|
|
}
|
|
|
|
void testNestedSwitchExpression() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
String code = """
|
|
class Test {
|
|
void t(Object o1, Object o2) {
|
|
System.err.println(switch (o1) {
|
|
case String s -> switch (j) {
|
|
case Integer i -> {
|
|
int scopeHere;
|
|
yield "";
|
|
}
|
|
default -> "";
|
|
};
|
|
default -> "";
|
|
});
|
|
}
|
|
}
|
|
""";
|
|
class MyFileObject extends SimpleJavaFileObject {
|
|
MyFileObject() {
|
|
super(URI.create("myfo:///Test.java"), SOURCE);
|
|
}
|
|
@Override
|
|
public String getCharContent(boolean ignoreEncodingErrors) {
|
|
return code;
|
|
}
|
|
}
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(new MyFileObject()), ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
List<List<String>> actual = new ArrayList<>();
|
|
|
|
new TreePathScanner<Void, Void>() {
|
|
@Override
|
|
public Void visitVariable(VariableTree node, Void p) {
|
|
if (node.getName().contentEquals("scopeHere")) {
|
|
Scope scope = Trees.instance(t).getScope(getCurrentPath());
|
|
actual.add(dumpScope(scope));
|
|
JCTree body = getCaseBody(scope);
|
|
if (body == null) {
|
|
throw new AssertionError("Unexpected null body.");
|
|
}
|
|
}
|
|
return super.visitVariable(node, p);
|
|
}
|
|
JCTree getCaseBody(Scope scope) {
|
|
return ((JCCase) ((JavacScope) scope).getEnv().next.next.tree).body;
|
|
}
|
|
}.scan(cut, null);
|
|
|
|
List<List<String>> expected =
|
|
List.of(List.of("scopeHere:int",
|
|
"i:java.lang.Integer",
|
|
"s:java.lang.String",
|
|
"o2:java.lang.Object",
|
|
"o1:java.lang.Object",
|
|
"super:java.lang.Object",
|
|
"this:Test"
|
|
));
|
|
|
|
if (!expected.equals(actual)) {
|
|
throw new AssertionError("Unexpected Scope content: " + actual);
|
|
}
|
|
}
|
|
}
|
|
|
|
void testModuleImportScope() throws IOException {
|
|
JavacTool c = JavacTool.create();
|
|
try (StandardJavaFileManager fm = c.getStandardFileManager(null, null, null)) {
|
|
String code = """
|
|
import module java.compiler;
|
|
import java.util.*;
|
|
import java.lang.System;
|
|
class Test {
|
|
}
|
|
""";
|
|
Context ctx = new Context();
|
|
TestAnalyzer.preRegister(ctx);
|
|
JavaFileObject input =
|
|
SimpleJavaFileObject.forSource(URI.create("myfo:///Test.java"), code);
|
|
JavacTask t = (JavacTask) c.getTask(null, fm, null, null, null,
|
|
List.of(input),
|
|
ctx);
|
|
CompilationUnitTree cut = t.parse().iterator().next();
|
|
t.analyze();
|
|
|
|
TreePath topLevelClass = new TreePath(new TreePath(cut), cut.getTypeDecls().get(0));
|
|
Scope scope = Trees.instance(t).getScope(topLevelClass);
|
|
|
|
if (scope.getEnclosingClass() == null) {
|
|
throw new AssertionError("Expected an enclosing class.");
|
|
}
|
|
|
|
scope = scope.getEnclosingScope();
|
|
|
|
if (scope.getEnclosingClass() != null) {
|
|
throw new AssertionError("Did not expect an enclosing class.");
|
|
}
|
|
|
|
asssertScopeContainsTypeWithFQN(scope, "java.lang.System");
|
|
asssertScopeContainsTypeWithFQN(scope, "Test");
|
|
|
|
scope = scope.getEnclosingScope();
|
|
|
|
if (scope.getEnclosingClass() != null) {
|
|
throw new AssertionError("Did not expect an enclosing class.");
|
|
}
|
|
|
|
asssertScopeContainsTypeWithFQN(scope, "java.util.List");
|
|
|
|
scope = scope.getEnclosingScope();
|
|
|
|
if (scope.getEnclosingClass() != null) {
|
|
throw new AssertionError("Did not expect an enclosing class.");
|
|
}
|
|
|
|
asssertScopeContainsTypeWithFQN(scope, "javax.tools.ToolProvider");
|
|
|
|
if (scope.getEnclosingScope() != null) {
|
|
throw new AssertionError("Did not expect an enclosing scope.");
|
|
}
|
|
}
|
|
}
|
|
|
|
private List<String> dumpScope(Scope scope) {
|
|
List<String> content = new ArrayList<>();
|
|
while (scope.getEnclosingClass() != null) {
|
|
for (Element el : scope.getLocalElements()) {
|
|
content.add(el.getSimpleName() + ":" +el.asType().toString());
|
|
}
|
|
scope = scope.getEnclosingScope();
|
|
}
|
|
return content;
|
|
}
|
|
|
|
private void asssertScopeContainsTypeWithFQN(Scope scope, String fqn) {
|
|
for (TypeElement type : ElementFilter.typesIn(scope.getLocalElements())) {
|
|
if (type.getQualifiedName().contentEquals(fqn)) {
|
|
return ;
|
|
}
|
|
}
|
|
|
|
throw new AssertionError("Expected to find: " + fqn +
|
|
" in: " + scope.getLocalElements() +
|
|
", but it is missing.");
|
|
}
|
|
|
|
}
|