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android / toolchain / jdk / jdk21 / HEAD / . / test / langtools / tools / javac / parser / JavacParserTest.java
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/*
* Copyright (c) 2011, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 7073631 7159445 7156633 8028235 8065753 8205418 8205913 8228451 8237041 8253584 8246774 8256411 8256149 8259050 8266436 8267221 8271928 8275097 8293897 8295401 8304671 8312093 8315452
* @summary tests error and diagnostics positions
* @author Jan Lahoda
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.tree
*/
import com.sun.source.tree.BinaryTree;
import com.sun.source.tree.BlockTree;
import com.sun.source.tree.ClassTree;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.ErroneousTree;
import com.sun.source.tree.ExpressionStatementTree;
import com.sun.source.tree.ExpressionTree;
import com.sun.source.tree.IfTree;
import com.sun.source.tree.LambdaExpressionTree;
import com.sun.source.tree.MethodInvocationTree;
import com.sun.source.tree.MethodTree;
import com.sun.source.tree.ModifiersTree;
import com.sun.source.tree.PrimitiveTypeTree;
import com.sun.source.tree.StatementTree;
import com.sun.source.tree.Tree;
import com.sun.source.tree.Tree.Kind;
import com.sun.source.tree.VariableTree;
import com.sun.source.tree.WhileLoopTree;
import com.sun.source.util.JavacTask;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.TreePath;
import com.sun.source.util.TreeScanner;
import com.sun.source.util.Trees;
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.main.Main;
import com.sun.tools.javac.main.Main.Result;
import com.sun.tools.javac.tree.JCTree;
import java.io.IOException;
import java.io.StringWriter;
import java.io.UncheckedIOException;
import java.io.Writer;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.lang.reflect.Method;
import java.net.URI;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.List;
import java.util.Objects;
import java.util.regex.Pattern;
import javax.lang.model.element.Modifier;
import javax.lang.model.type.TypeKind;
import javax.tools.Diagnostic;
import javax.tools.DiagnosticCollector;
import javax.tools.DiagnosticListener;
import javax.tools.JavaCompiler;
import javax.tools.JavaFileManager;
import javax.tools.JavaFileObject;
import javax.tools.SimpleJavaFileObject;
import javax.tools.ToolProvider;
import com.sun.source.tree.CaseTree;
import com.sun.source.tree.DefaultCaseLabelTree;
import com.sun.source.tree.ModuleTree;
import com.sun.source.util.TreePathScanner;
import com.sun.tools.javac.api.JavacTaskPool;
import com.sun.tools.javac.api.JavacTaskPool.Worker;
import com.sun.tools.javac.tree.JCTree.JCErroneous;
import com.sun.tools.javac.tree.Pretty;
public class JavacParserTest extends TestCase {
static final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
static final JavaFileManager fm = tool.getStandardFileManager(null, null, null);
public static final String SOURCE_VERSION =
Integer.toString(Runtime.version().feature());
private JavacParserTest(){}
public static void main(String... args) throws Exception {
try (fm) {
new JavacParserTest().run(args);
}
}
class MyFileObject extends SimpleJavaFileObject {
private String text;
public MyFileObject(String text) {
this("Test", text);
}
public MyFileObject(String fileName, String text) {
super(URI.create("myfo:/" + fileName + ".java"), JavaFileObject.Kind.SOURCE);
this.text = text;
}
@Override
public CharSequence getCharContent(boolean ignoreEncodingErrors) {
return text;
}
}
/*
* converts Windows to Unix style LFs for comparing strings
*/
String normalize(String in) {
return in.replace(System.getProperty("line.separator"), "\n");
}
CompilationUnitTree getCompilationUnitTree(String code) throws IOException {
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
return cut;
}
List<String> getErroneousTreeValues(ErroneousTree node) {
List<String> values = new ArrayList<>();
if (node.getErrorTrees() != null) {
for (Tree t : node.getErrorTrees()) {
values.add(t.toString());
}
} else {
throw new RuntimeException("ERROR: No Erroneous tree "
+ "has been created.");
}
return values;
}
@Test
void testPositionForSuperConstructorCalls() throws IOException {
assert tool != null;
String code = "package test; public class Test {public Test() {super();}}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
SourcePositions pos = Trees.instance(ct).getSourcePositions();
MethodTree method =
(MethodTree) ((ClassTree) cut.getTypeDecls().get(0)).getMembers().get(0);
ExpressionStatementTree es =
(ExpressionStatementTree) method.getBody().getStatements().get(0);
final int esStartPos = code.indexOf(es.toString());
final int esEndPos = esStartPos + es.toString().length();
assertEquals("testPositionForSuperConstructorCalls",
esStartPos, pos.getStartPosition(cut, es));
assertEquals("testPositionForSuperConstructorCalls",
esEndPos, pos.getEndPosition(cut, es));
MethodInvocationTree mit = (MethodInvocationTree) es.getExpression();
final int mitStartPos = code.indexOf(mit.toString());
final int mitEndPos = mitStartPos + mit.toString().length();
assertEquals("testPositionForSuperConstructorCalls",
mitStartPos, pos.getStartPosition(cut, mit));
assertEquals("testPositionForSuperConstructorCalls",
mitEndPos, pos.getEndPosition(cut, mit));
final int methodStartPos = mitStartPos;
final int methodEndPos = methodStartPos + mit.getMethodSelect().toString().length();
assertEquals("testPositionForSuperConstructorCalls",
methodStartPos, pos.getStartPosition(cut, mit.getMethodSelect()));
assertEquals("testPositionForSuperConstructorCalls",
methodEndPos, pos.getEndPosition(cut, mit.getMethodSelect()));
}
@Test
void testPositionForEnumModifiers() throws IOException {
final String theString = "public";
String code = "package test; " + theString + " enum Test {A;}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
SourcePositions pos = Trees.instance(ct).getSourcePositions();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
ModifiersTree mt = clazz.getModifiers();
int spos = code.indexOf(theString);
int epos = spos + theString.length();
assertEquals("testPositionForEnumModifiers",
spos, pos.getStartPosition(cut, mt));
assertEquals("testPositionForEnumModifiers",
epos, pos.getEndPosition(cut, mt));
}
@Test
void testNewClassWithEnclosing() throws IOException {
final String theString = "Test.this.new d()";
String code = "package test; class Test { " +
"class d {} private void method() { " +
"Object o = " + theString + "; } }";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
SourcePositions pos = Trees.instance(ct).getSourcePositions();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
ExpressionTree est =
((VariableTree) ((MethodTree) clazz.getMembers().get(1)).getBody().getStatements().get(0)).getInitializer();
final int spos = code.indexOf(theString);
final int epos = spos + theString.length();
assertEquals("testNewClassWithEnclosing",
spos, pos.getStartPosition(cut, est));
assertEquals("testNewClassWithEnclosing",
epos, pos.getEndPosition(cut, est));
}
@Test
void testPreferredPositionForBinaryOp() throws IOException {
String code = "package test; public class Test {"
+ "private void test() {"
+ "Object o = null; boolean b = o != null && o instanceof String;"
+ "} private Test() {}}";
CompilationUnitTree cut = getCompilationUnitTree(code);
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree method = (MethodTree) clazz.getMembers().get(0);
VariableTree condSt = (VariableTree) method.getBody().getStatements().get(1);
BinaryTree cond = (BinaryTree) condSt.getInitializer();
JCTree condJC = (JCTree) cond;
int condStartPos = code.indexOf("&&");
assertEquals("testPreferredPositionForBinaryOp",
condStartPos, condJC.pos);
}
@Test
void testErrorRecoveryForEnhancedForLoop142381() throws IOException {
String code = "package test; class Test { " +
"private void method() { " +
"java.util.Set<String> s = null; for (a : s) {} } }";
final List<Diagnostic<? extends JavaFileObject>> errors =
new LinkedList<Diagnostic<? extends JavaFileObject>>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm,
new DiagnosticListener<JavaFileObject>() {
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
errors.add(diagnostic);
}
}, null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
StatementTree forStatement =
((MethodTree) clazz.getMembers().get(0)).getBody().getStatements().get(1);
assertEquals("testErrorRecoveryForEnhancedForLoop142381",
Kind.ENHANCED_FOR_LOOP, forStatement.getKind());
assertFalse("testErrorRecoveryForEnhancedForLoop142381", errors.isEmpty());
}
@Test
void testPositionAnnotationNoPackage187551() throws IOException {
String code = "\n@interface Test {}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
Trees t = Trees.instance(ct);
assertEquals("testPositionAnnotationNoPackage187551",
1, t.getSourcePositions().getStartPosition(cut, clazz));
}
@Test
void testPositionMissingStatement() throws IOException {
String code = "class C { void t() { if (true) } }";
DiagnosticCollector<JavaFileObject> dc = new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, dc, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees trees = Trees.instance(ct);
SourcePositions positions = trees.getSourcePositions();
new TreeScanner<Void, Void>() {
@Override
public Void visitIf(IfTree it, Void v) {
StatementTree st = it.getThenStatement();
int startpos = (int) positions.getStartPosition(cut, st);
int endpos = (int) positions.getEndPosition(cut, st);
assertEquals("testPositionMissingStatement.execpos", startpos, endpos);
assertEquals("testPositionMissingStatement.execkind",
Kind.EXPRESSION_STATEMENT,
st.getKind());
Tree err = ((ExpressionStatementTree) st).getExpression();
startpos = (int) positions.getStartPosition(cut, err);
endpos = (int) positions.getEndPosition(cut, err);
assertEquals("testPositionMissingStatement.errpos", startpos, endpos);
assertEquals("testPositionMissingStatement.errkind",
Kind.ERRONEOUS,
err.getKind());
return super.visitIf(it, v);
}
}.scan(cut, null);
assertEquals("testPositionMissingStatement.diags", 1, dc.getDiagnostics().size());
Diagnostic<? extends JavaFileObject> d = dc.getDiagnostics().get(0);
int startpos = (int) d.getStartPosition();
int pos = (int) d.getPosition();
int endpos = (int) d.getEndPosition();
assertEquals("testPositionMissingStatement.diagspan", startpos, endpos);
assertEquals("testPositionMissingStatement.diagpref", startpos, pos);
}
@Test
void testPositionsSane1() throws IOException {
performPositionsSanityTest("package test; class Test { " +
"private void method() { " +
"java.util.List<? extends java.util.List<? extends String>> l; " +
"} }");
}
@Test
void testPositionsSane2() throws IOException {
performPositionsSanityTest("package test; class Test { " +
"private void method() { " +
"java.util.List<? super java.util.List<? super String>> l; " +
"} }");
}
@Test
void testPositionsSane3() throws IOException {
performPositionsSanityTest("package test; class Test { " +
"private void method() { " +
"java.util.List<? super java.util.List<?>> l; } }");
}
private void performPositionsSanityTest(String code) throws IOException {
final List<Diagnostic<? extends JavaFileObject>> errors =
new LinkedList<Diagnostic<? extends JavaFileObject>>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm,
new DiagnosticListener<JavaFileObject>() {
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
errors.add(diagnostic);
}
}, null, null, Arrays.asList(new MyFileObject(code)));
final CompilationUnitTree cut = ct.parse().iterator().next();
final Trees trees = Trees.instance(ct);
new TreeScanner<Void, Void>() {
private long parentStart = 0;
private long parentEnd = Integer.MAX_VALUE;
@Override
public Void scan(Tree node, Void p) {
if (node == null) {
return null;
}
long start = trees.getSourcePositions().getStartPosition(cut, node);
if (start == (-1)) {
return null; // synthetic tree
}
assertTrue(node.toString() + ":" + start + "/" + parentStart,
parentStart <= start);
long prevParentStart = parentStart;
parentStart = start;
long end = trees.getSourcePositions().getEndPosition(cut, node);
assertTrue(node.toString() + ":" + end + "/" + parentEnd,
end <= parentEnd);
long prevParentEnd = parentEnd;
parentEnd = end;
super.scan(node, p);
parentStart = prevParentStart;
parentEnd = prevParentEnd;
return null;
}
private void assertTrue(String message, boolean b) {
if (!b) fail(message);
}
}.scan(cut, null);
}
@Test
void testCorrectWildcardPositions1() throws IOException {
performWildcardPositionsTest("package test; import java.util.List; " +
"class Test { private void method() { List<? extends List<? extends String>> l; } }",
Arrays.asList("List<? extends List<? extends String>> l;",
"List<? extends List<? extends String>>",
"List",
"? extends List<? extends String>",
"List<? extends String>",
"List",
"? extends String",
"String"));
}
@Test
void testCorrectWildcardPositions2() throws IOException {
performWildcardPositionsTest("package test; import java.util.List; "
+ "class Test { private void method() { List<? super List<? super String>> l; } }",
Arrays.asList("List<? super List<? super String>> l;",
"List<? super List<? super String>>",
"List",
"? super List<? super String>",
"List<? super String>",
"List",
"? super String",
"String"));
}
@Test
void testCorrectWildcardPositions3() throws IOException {
performWildcardPositionsTest("package test; import java.util.List; " +
"class Test { private void method() { List<? super List<?>> l; } }",
Arrays.asList("List<? super List<?>> l;",
"List<? super List<?>>",
"List",
"? super List<?>",
"List<?>",
"List",
"?"));
}
@Test
void testCorrectWildcardPositions4() throws IOException {
performWildcardPositionsTest("package test; import java.util.List; " +
"class Test { private void method() { " +
"List<? extends List<? extends List<? extends String>>> l; } }",
Arrays.asList("List<? extends List<? extends List<? extends String>>> l;",
"List<? extends List<? extends List<? extends String>>>",
"List",
"? extends List<? extends List<? extends String>>",
"List<? extends List<? extends String>>",
"List",
"? extends List<? extends String>",
"List<? extends String>",
"List",
"? extends String",
"String"));
}
@Test
void testCorrectWildcardPositions5() throws IOException {
performWildcardPositionsTest("package test; import java.util.List; " +
"class Test { private void method() { " +
"List<? extends List<? extends List<? extends String >>> l; } }",
Arrays.asList("List<? extends List<? extends List<? extends String >>> l;",
"List<? extends List<? extends List<? extends String >>>",
"List",
"? extends List<? extends List<? extends String >>",
"List<? extends List<? extends String >>",
"List",
"? extends List<? extends String >",
"List<? extends String >",
"List",
"? extends String",
"String"));
}
void performWildcardPositionsTest(final String code,
List<String> golden) throws IOException {
final List<Diagnostic<? extends JavaFileObject>> errors =
new LinkedList<Diagnostic<? extends JavaFileObject>>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm,
new DiagnosticListener<JavaFileObject>() {
public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
errors.add(diagnostic);
}
}, null, null, Arrays.asList(new MyFileObject(code)));
final CompilationUnitTree cut = ct.parse().iterator().next();
final List<String> content = new LinkedList<String>();
final Trees trees = Trees.instance(ct);
new TreeScanner<Void, Void>() {
@Override
public Void scan(Tree node, Void p) {
if (node == null) {
return null;
}
long start = trees.getSourcePositions().getStartPosition(cut, node);
if (start == (-1)) {
return null; // synthetic tree
}
long end = trees.getSourcePositions().getEndPosition(cut, node);
String s = code.substring((int) start, (int) end);
content.add(s);
return super.scan(node, p);
}
}.scan(((MethodTree) ((ClassTree) cut.getTypeDecls().get(0)).getMembers().get(0)).getBody().getStatements().get(0), null);
assertEquals("performWildcardPositionsTest",golden.toString(),
content.toString());
}
@Test
void testStartPositionForMethodWithoutModifiers() throws IOException {
String code = "package t; class Test { <T> void t() {} }";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree mt = (MethodTree) clazz.getMembers().get(0);
Trees t = Trees.instance(ct);
int start = (int) t.getSourcePositions().getStartPosition(cut, mt);
int end = (int) t.getSourcePositions().getEndPosition(cut, mt);
assertEquals("testStartPositionForMethodWithoutModifiers",
"<T> void t() {}", code.substring(start, end));
}
@Test
void testVariableInIfThen1() throws IOException {
String code = "package t; class Test { " +
"private static void t(String name) { " +
"if (name != null) String nn = name.trim(); } }";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<JavaFileObject>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
ct.parse();
List<String> codes = new LinkedList<String>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testVariableInIfThen1",
Arrays.<String>asList("compiler.err.variable.not.allowed"),
codes);
}
@Test
void testVariableInIfThen2() throws IOException {
String code = "package t; class Test { " +
"private static void t(String name) { " +
"if (name != null) class X {} } }";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<JavaFileObject>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
ct.parse();
List<String> codes = new LinkedList<String>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testVariableInIfThen2",
Arrays.<String>asList("compiler.err.class.not.allowed"), codes);
}
@Test
void testVariableInIfThen3() throws IOException {
String code = "package t; class Test { "+
"private static void t() { " +
"if (true) abstract class F {} }}";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<JavaFileObject>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
ct.parse();
List<String> codes = new LinkedList<String>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testVariableInIfThen3",
Arrays.<String>asList("compiler.err.class.not.allowed"), codes);
}
@Test
void testVariableInIfThen4() throws IOException {
String code = "package t; class Test { "+
"private static void t(String name) { " +
"if (name != null) interface X {} } }";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<JavaFileObject>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
ct.parse();
List<String> codes = new LinkedList<String>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testVariableInIfThen4",
Arrays.<String>asList("compiler.err.class.not.allowed"), codes);
}
@Test
void testVariableInIfThen5() throws IOException {
String code = "package t; class Test { "+
"private static void t() { " +
"if (true) } }";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<JavaFileObject>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
ct.parse();
List<String> codes = new LinkedList<String>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testVariableInIfThen5",
Arrays.<String>asList("compiler.err.illegal.start.of.stmt"),
codes);
}
// see javac bug #6882235, NB bug #98234:
@Test
void testMissingExponent() throws IOException {
String code = "\nclass Test { { System.err.println(0e); } }";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
assertNotNull(ct.parse().iterator().next());
}
@Test
void testTryResourcePos() throws IOException {
final String code = "package t; class Test { " +
"{ try (java.io.InputStream in = null) { } } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
new TreeScanner<Void, Void>() {
@Override
public Void visitVariable(VariableTree node, Void p) {
if ("in".contentEquals(node.getName())) {
JCTree.JCVariableDecl var = (JCTree.JCVariableDecl) node;
assertEquals("testTryResourcePos", "in = null) { } } }",
code.substring(var.pos));
}
return super.visitVariable(node, p);
}
}.scan(cut, null);
}
@Test
void testVarPos() throws IOException {
final String code = "package t; class Test { " +
"{ java.io.InputStream in = null; } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
new TreeScanner<Void, Void>() {
@Override
public Void visitVariable(VariableTree node, Void p) {
if ("in".contentEquals(node.getName())) {
JCTree.JCVariableDecl var = (JCTree.JCVariableDecl) node;
assertEquals("testVarPos","in = null; } }",
code.substring(var.pos));
}
return super.visitVariable(node, p);
}
}.scan(cut, null);
}
// expected erroneous tree: int x = y;(ERROR);
@Test
void testOperatorMissingError() throws IOException {
String code = "package test; public class ErrorTest { "
+ "void method() { int x = y z } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
final List<String> values = new ArrayList<>();
final List<String> expectedValues =
new ArrayList<>(Arrays.asList("[z]"));
new TreeScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree node, Void p) {
values.add(getErroneousTreeValues(node).toString());
return null;
}
}.scan(cut, null);
assertEquals("testOperatorMissingError: The Erroneous tree "
+ "error values: " + values
+ " do not match expected error values: "
+ expectedValues, values, expectedValues);
}
// expected erroneous tree: String s = (ERROR);
@Test
void testMissingParenthesisError() throws IOException {
String code = "package test; public class ErrorTest { "
+ "void f() {String s = new String; } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
final List<String> values = new ArrayList<>();
final List<String> expectedValues =
new ArrayList<>(Arrays.asList("[new String()]"));
new TreeScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree node, Void p) {
values.add(getErroneousTreeValues(node).toString());
return null;
}
}.scan(cut, null);
assertEquals("testMissingParenthesisError: The Erroneous tree "
+ "error values: " + values
+ " do not match expected error values: "
+ expectedValues, values, expectedValues);
}
// expected erroneous tree: package test; (ERROR)(ERROR)
@Test
void testMissingClassError() throws IOException {
String code = "package Test; clas ErrorTest { "
+ "void f() {String s = new String(); } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
final List<String> values = new ArrayList<>();
final List<String> expectedValues =
new ArrayList<>(Arrays.asList("[, clas]", "[]"));
new TreeScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree node, Void p) {
values.add(getErroneousTreeValues(node).toString());
return null;
}
}.scan(cut, null);
assertEquals("testMissingClassError: The Erroneous tree "
+ "error values: " + values
+ " do not match expected error values: "
+ expectedValues, values, expectedValues);
}
// expected erroneous tree: void m1(int i) {(ERROR);{(ERROR);}
@Test
void testSwitchError() throws IOException {
String code = "package test; public class ErrorTest { "
+ "int numDays; void m1(int i) { switchh {i} { case 1: "
+ "numDays = 31; break; } } }";
CompilationUnitTree cut = getCompilationUnitTree(code);
final List<String> values = new ArrayList<>();
final List<String> expectedValues =
new ArrayList<>(Arrays.asList("[switchh]", "[i]"));
new TreeScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree node, Void p) {
values.add(getErroneousTreeValues(node).toString());
return null;
}
}.scan(cut, null);
assertEquals("testSwitchError: The Erroneous tree "
+ "error values: " + values
+ " do not match expected error values: "
+ expectedValues, values, expectedValues);
}
// expected erroneous tree: class ErrorTest {(ERROR)
@Test
void testMethodError() throws IOException {
String code = "package Test; class ErrorTest { "
+ "static final void f) {String s = new String(); } }";
CompilationUnitTree cut = cut = getCompilationUnitTree(code);
final List<String> values = new ArrayList<>();
final List<String> expectedValues =
new ArrayList<>(Arrays.asList("[\nstatic final void f();]"));
new TreeScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree node, Void p) {
values.add(normalize(getErroneousTreeValues(node).toString()));
return null;
}
}.scan(cut, null);
assertEquals("testMethodError: The Erroneous tree "
+ "error value: " + values
+ " does not match expected error values: "
+ expectedValues, values, expectedValues);
}
@Test
void testPositionBrokenSource126732a() throws IOException {
String[] commands = new String[]{
"return Runnable()",
"do { } while (true)",
"throw UnsupportedOperationException()",
"assert true",
"1 + 1",};
for (String command : commands) {
String code = "package test;\n"
+ "public class Test {\n"
+ " public static void test() {\n"
+ " " + command + " {\n"
+ " new Runnable() {\n"
+ " };\n"
+ " }\n"
+ "}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree method = (MethodTree) clazz.getMembers().get(0);
List<? extends StatementTree> statements =
method.getBody().getStatements();
StatementTree ret = statements.get(0);
StatementTree block = statements.get(1);
Trees t = Trees.instance(ct);
int len = code.indexOf(command + " {") + (command + " ").length();
assertEquals(command, len,
t.getSourcePositions().getEndPosition(cut, ret));
assertEquals(command, len,
t.getSourcePositions().getStartPosition(cut, block));
}
}
@Test
void testPositionBrokenSource126732b() throws IOException {
String[] commands = new String[]{
"break",
"break A",
"continue ",
"continue A",};
for (String command : commands) {
String code = "package test;\n"
+ "public class Test {\n"
+ " public static void test() {\n"
+ " while (true) {\n"
+ " " + command + " {\n"
+ " new Runnable() {\n"
+ " };\n"
+ " }\n"
+ " }\n"
+ "}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree method = (MethodTree) clazz.getMembers().get(0);
List<? extends StatementTree> statements =
((BlockTree) ((WhileLoopTree) method.getBody().getStatements().get(0)).getStatement()).getStatements();
StatementTree ret = statements.get(0);
StatementTree block = statements.get(1);
Trees t = Trees.instance(ct);
int len = code.indexOf(command + " {") + (command + " ").length();
assertEquals(command, len,
t.getSourcePositions().getEndPosition(cut, ret));
assertEquals(command, len,
t.getSourcePositions().getStartPosition(cut, block));
}
}
@Test
void testStartPositionEnumConstantInit() throws IOException {
String code = "package t; enum Test { AAA; }";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
VariableTree enumAAA = (VariableTree) clazz.getMembers().get(0);
Trees t = Trees.instance(ct);
int start = (int) t.getSourcePositions().getStartPosition(cut,
enumAAA.getInitializer());
assertEquals("testStartPositionEnumConstantInit", 23, start);
}
@Test
void testVoidLambdaParameter() throws IOException {
String code = "package t; class Test { " +
"Runnable r = (void v) -> { };" +
"}";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
VariableTree field = (VariableTree) clazz.getMembers().get(0);
assertEquals("actual kind: " + field.getInitializer().getKind(),
field.getInitializer().getKind(),
Kind.LAMBDA_EXPRESSION);
LambdaExpressionTree lambda = (LambdaExpressionTree) field.getInitializer();
assertEquals("actual parameters: " + lambda.getParameters().size(),
lambda.getParameters().size(),
1);
Tree paramType = lambda.getParameters().get(0).getType();
assertEquals("actual parameter type: " + paramType.getKind(),
paramType.getKind(),
Kind.PRIMITIVE_TYPE);
TypeKind primitiveTypeKind = ((PrimitiveTypeTree) paramType).getPrimitiveTypeKind();
assertEquals("actual parameter type: " + primitiveTypeKind,
primitiveTypeKind,
TypeKind.VOID);
}
@Test //JDK-8065753
void testWrongFirstToken() throws IOException {
String code = "<";
String expectedErrors = "Test.java:1:1: compiler.err.expected4: class, interface, enum, record\n" +
"1 error\n";
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null,
Arrays.asList("-XDrawDiagnostics"), null, Arrays.asList(new MyFileObject(code)));
Result errorCode = ct.doCall();
assertEquals("the error code is not correct; actual:" + errorCode, Main.Result.ERROR, errorCode);
String actualErrors = normalize(out.toString());
assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
}
@Test //JDK-8205913
void testForInit() throws IOException {
String code = "class T { void t() { for (n : ns) { } } }";
String expectedErrors = "Test.java:1:27: compiler.err.bad.initializer: for-loop\n";
StringWriter out = new StringWriter();
JavacTask ct = (JavacTask) tool.getTask(out, fm, null,
Arrays.asList("-XDrawDiagnostics"), null, Arrays.asList(new MyFileObject(code)));
Iterable<? extends CompilationUnitTree> cuts = ct.parse();
boolean[] foundVar = new boolean[1];
new TreePathScanner<Void, Void>() {
@Override public Void visitVariable(VariableTree vt, Void p) {
assertNotNull(vt.getModifiers());
assertNotNull(vt.getType());
assertNotNull(vt.getName());
assertEquals("name should be <error>", "<error>", vt.getName().toString());
foundVar[0] = true;
return super.visitVariable(vt, p);
}
}.scan(cuts, null);
if (!foundVar[0]) {
fail("haven't found a variable");
}
String actualErrors = normalize(out.toString());
assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
}
@Test //JDK-821742
void testCompDeclVarType() throws IOException {
String code = "package test; public class Test {"
+ "private void test() {"
+ "var v1 = 10,v2 = 12;"
+ "} private Test() {}}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ct.enter();
ct.analyze();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree method = (MethodTree) clazz.getMembers().get(0);
VariableTree stmt1 = (VariableTree) method.getBody().getStatements().get(0);
VariableTree stmt2 = (VariableTree) method.getBody().getStatements().get(1);
Tree v1Type = stmt1.getType();
Tree v2Type = stmt2.getType();
assertEquals("Implicit type for v1 is not correct: ", Kind.PRIMITIVE_TYPE, v1Type.getKind());
assertEquals("Implicit type for v2 is not correct: ", Kind.PRIMITIVE_TYPE, v2Type.getKind());
}
@Test
void testCaseBodyStatements() throws IOException {
String code = "class C {" +
" void t(int i) {" +
" switch (i) {" +
" case 0 -> i++;" +
" case 1 -> { i++; }" +
" case 2 -> throw new RuntimeException();" +
" case 3 -> if (true) ;" +
" default -> i++;" +
" }" +
" switch (i) {" +
" case 0: i++; break;" +
" case 1: { i++; break;}" +
" case 2: throw new RuntimeException();" +
" case 3: if (true) ; break;" +
" default: i++; break;" +
" }" +
" int j = switch (i) {" +
" case 0 -> i + 1;" +
" case 1 -> { yield i + 1; }" +
" default -> throw new RuntimeException();" +
" };" +
" int k = switch (i) {" +
" case 0: yield i + 1;" +
" case 1: { yield i + 1; }" +
" default: throw new RuntimeException();" +
" };" +
" }" +
"}";
String expectedErrors = "Test.java:1:178: compiler.err.switch.case.unexpected.statement\n";
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null,
Arrays.asList("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees trees = Trees.instance(ct);
List<String> spans = new ArrayList<>();
new TreePathScanner<Void, Void>() {
@Override
public Void visitCase(CaseTree tree, Void v) {
if (tree.getBody() != null) {
int start = (int) trees.getSourcePositions().getStartPosition(cut, tree.getBody());
int end = (int) trees.getSourcePositions().getEndPosition(cut, tree.getBody());
spans.add(code.substring(start, end));
} else {
spans.add("<null>");
}
return super.visitCase(tree, v);
}
}.scan(cut, null);
List<String> expectedSpans = List.of(
"i++;", "{ i++; }", "throw new RuntimeException();", "if (true) ;", "i++;",
"<null>", "<null>", "<null>", "<null>", "<null>",
"i + 1"/*TODO semicolon?*/, "{ yield i + 1; }", "throw new RuntimeException();",
"<null>", "<null>", "<null>");
assertEquals("the error spans are not correct; actual:" + spans, expectedSpans, spans);
String toString = normalize(cut.toString());
String expectedToString =
"\n" +
"class C {\n" +
" \n" +
" void t(int i) {\n" +
" switch (i) {\n" +
" case 0 -> i++;\n" +
" case 1 -> {\n" +
" i++;\n" +
" }\n" +
" case 2 -> throw new RuntimeException();\n" +
" case 3 -> if (true) ;\n" +
" default -> i++;\n" +
" }\n" +
" switch (i) {\n" +
" case 0:\n" +
" i++;\n" +
" break;\n" +
" \n" +
" case 1:\n" +
" {\n" +
" i++;\n" +
" break;\n" +
" }\n" +
" \n" +
" case 2:\n" +
" throw new RuntimeException();\n" +
" \n" +
" case 3:\n" +
" if (true) ;\n" +
" break;\n" +
" \n" +
" default:\n" +
" i++;\n" +
" break;\n" +
" \n" +
" }\n" +
" int j = switch (i) {\n" +
" case 0 -> yield i + 1;\n" +
" case 1 -> {\n" +
" yield i + 1;\n" +
" }\n" +
" default -> throw new RuntimeException();\n" +
" };\n" +
" int k = switch (i) {\n" +
" case 0:\n" +
" yield i + 1;\n" +
" \n" +
" case 1:\n" +
" {\n" +
" yield i + 1;\n" +
" }\n" +
" \n" +
" default:\n" +
" throw new RuntimeException();\n" +
" \n" +
" };\n" +
" }\n" +
"}";
System.err.println("toString:");
System.err.println(toString);
System.err.println("expectedToString:");
System.err.println(expectedToString);
assertEquals("the error spans are not correct; actual:" + toString, expectedToString, toString);
String actualErrors = normalize(out.toString());
assertEquals("the error message is not correct, actual: " + actualErrors, expectedErrors, actualErrors);
}
@Test
void testTypeParamsWithoutMethod() throws IOException {
assert tool != null;
String code = "package test; class Test { /**javadoc*/ |public <T> |}";
String[] parts = code.split("\\|");
code = parts[0] + parts[1] + parts[2];
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
Trees trees = Trees.instance(ct);
SourcePositions pos = trees.getSourcePositions();
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
ErroneousTree err = (ErroneousTree) clazz.getMembers().get(0);
MethodTree method = (MethodTree) err.getErrorTrees().get(0);
final int methodStart = parts[0].length();
final int methodEnd = parts[0].length() + parts[1].length();
assertEquals("testTypeParamsWithoutMethod",
methodStart, pos.getStartPosition(cut, method));
assertEquals("testTypeParamsWithoutMethod",
methodEnd, pos.getEndPosition(cut, method));
TreePath path2Method = new TreePath(new TreePath(new TreePath(cut), clazz), method);
String javadoc = trees.getDocComment(path2Method);
if (!"javadoc".equals(javadoc)) {
throw new AssertionError("Expected javadoc not found, actual javadoc: " + javadoc);
}
}
@Test
void testAnalyzeParensWithComma1() throws IOException {
assert tool != null;
String code = "package test; class Test { FI fi = |(s, |";
String[] parts = code.split("\\|", 3);
code = parts[0] + parts[1] + parts[2];
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
Trees trees = Trees.instance(ct);
SourcePositions pos = trees.getSourcePositions();
CompilationUnitTree cut = ct.parse().iterator().next();
boolean[] found = new boolean[1];
new TreeScanner<Void, Void>() {
@Override
public Void visitLambdaExpression(LambdaExpressionTree tree, Void v) {
found[0] = true;
int lambdaStart = parts[0].length();
int lambdaEnd = parts[0].length() + parts[1].length();
assertEquals("testAnalyzeParensWithComma1",
lambdaStart, pos.getStartPosition(cut, tree));
assertEquals("testAnalyzeParensWithComma1",
lambdaEnd, pos.getEndPosition(cut, tree));
return null;
}
}.scan(cut, null);
assertTrue("testAnalyzeParensWithComma1", found[0]);
}
@Test
void testAnalyzeParensWithComma2() throws IOException {
assert tool != null;
String code = "package test; class Test { FI fi = |(s, o)|";
String[] parts = code.split("\\|", 3);
code = parts[0] + parts[1] + parts[2];
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
Trees trees = Trees.instance(ct);
SourcePositions pos = trees.getSourcePositions();
CompilationUnitTree cut = ct.parse().iterator().next();
boolean[] found = new boolean[1];
new TreeScanner<Void, Void>() {
@Override
public Void visitLambdaExpression(LambdaExpressionTree tree, Void v) {
found[0] = true;
int lambdaStart = parts[0].length();
int lambdaEnd = parts[0].length() + parts[1].length();
assertEquals("testAnalyzeParensWithComma2",
lambdaStart, pos.getStartPosition(cut, tree));
assertEquals("testAnalyzeParensWithComma2",
lambdaEnd, pos.getEndPosition(cut, tree));
return null;
}
}.scan(cut, null);
assertTrue("testAnalyzeParensWithComma2", found[0]);
}
@Test
void testBrokenEnum1() throws IOException {
assert tool != null;
String code = "package test; class Test { enum E { A, B, C. D, E, F; } }";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:44: compiler.err.expected3: ',', '}', ';'");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\r*\n", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" \n" +
" enum E {\n" +
" /*public static final*/ A /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ B /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ C /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ D /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ E /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ F /* = new E() */ /*enum*/ ;\n" +
" (ERROR) <error>;\n" +
" }\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testBrokenEnum2() throws IOException {
assert tool != null;
String code = "package test; class Test { enum E { A, B, C void t() {} } }";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:44: compiler.err.expected3: ',', '}', ';'");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\r*\n", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" \n" +
" enum E {\n" +
" /*public static final*/ A /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ B /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ C /* = new E() */ /*enum*/ ;\n" +
" \n" +
" void t() {\n" +
" }\n" +
" }\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testBrokenEnum3() throws IOException {
assert tool != null;
String code = "package test; class Test { enum E { , void t() {} } }";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:38: compiler.err.expected2: '}', ';'");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\r*\n", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" \n" +
" enum E {\n" +
";\n" +
" \n" +
" void t() {\n" +
" }\n" +
" }\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testBrokenEnum4() throws IOException {
assert tool != null;
String code = "package test; class Test { enum E { A, B, C, void t() {} } }";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:46: compiler.err.enum.constant.expected");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\r*\n", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" \n" +
" enum E {\n" +
" /*public static final*/ A /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ B /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ C /* = new E() */ /*enum*/ ;\n" +
" \n" +
" void t() {\n" +
" }\n" +
" }\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testBrokenEnum5() throws IOException {
assert tool != null;
String code = "package test; class Test { enum E { A; void t() {} B; } }";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:52: compiler.err.enum.constant.not.expected");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\r*\n", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" \n" +
" enum E {\n" +
" /*public static final*/ A /* = new E() */ /*enum*/ ,\n" +
" /*public static final*/ B /* = new E() */ /*enum*/ ;\n" +
" \n" +
" void t() {\n" +
" }\n" +
" }\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testCompoundAssignment() throws IOException {
assert tool != null;
String code = "package test; class Test { v += v v;}";
StringWriter output = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(output, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
List<String> actual = List.of(output.toString().split("\r?\n"));
List<String> expected = List.of("Test.java:1:29: compiler.err.expected: token.identifier");
assertEquals("The expected and actual errors do not match, actual errors: " + actual,
actual,
expected);
String actualAST = cut.toString().replaceAll("\\R", "\n");
String expectedAST = "package test;\n" +
"\n" +
"class Test {\n" +
" v <error>;\n" +
" v v;\n" +
"}";
assertEquals("The expected and actual AST do not match, actual AST: " + actualAST,
actualAST,
expectedAST);
}
@Test
void testStartAndEndPositionForClassesInPermitsClause() throws IOException {
String code = "package t; sealed class Test permits Sub1, Sub2 {} final class Sub1 extends Test {} final class Sub2 extends Test {}";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
List<? extends Tree> permitsList = clazz.getPermitsClause();
assertEquals("testStartAndEndPositionForClassesInPermitsClause", 2, permitsList.size());
Trees t = Trees.instance(ct);
List<String> expected = List.of("Sub1", "Sub2");
int i = 0;
for (Tree permitted: permitsList) {
int start = (int) t.getSourcePositions().getStartPosition(cut, permitted);
int end = (int) t.getSourcePositions().getEndPosition(cut, permitted);
assertEquals("testStartAndEndPositionForClassesInPermitsClause", expected.get(i++), code.substring(start, end));
}
}
@Test //JDK-8237041
void testDeepNestingNoClose() throws IOException {
//verify that many nested unclosed classes do not crash javac
//due to the safety fallback in JavacParser.reportSyntaxError:
String code = "package t; class Test {\n";
for (int i = 0; i < 100; i++) {
code += "class C" + i + " {\n";
}
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, List.of("-XDdev"),
null, Arrays.asList(new MyFileObject(code)));
Result result = ct.doCall();
assertEquals("Expected a (plain) error, got: " + result, result, Result.ERROR);
}
@Test //JDK-8237041
void testErrorRecoveryClassNotBrace() throws IOException {
//verify the AST form produced for classes without opening brace
//(classes without an opening brace do not nest the upcoming content):
String code = """
package t;
class Test {
String.class,
String.class,
class A
public
class B
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, List.of("-XDdev"),
null, Arrays.asList(new MyFileObject(code)));
String ast = ct.parse().iterator().next().toString().replaceAll("\\R", "\n");
String expected = """
package t;
\n\
class Test {
String.<error> <error>;
\n\
class <error> {
}
\n\
class <error> {
}
\n\
class A {
}
\n\
public class B {
}
}""";
assertEquals("Unexpected AST, got:\n" + ast, expected, ast);
}
@Test //JDK-8253584
void testElseRecovery() throws IOException {
//verify the errors and AST form produced for member selects which are
//missing the selected member name:
String code = """
package t;
class Test {
void t() {
if (true) {
s().
} else {
}
}
String s() {
return null;
}
}
""";
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
String ast = ct.parse().iterator().next().toString().replaceAll("\\R", "\n");
String expected = """
package t;
\n\
class Test {
\n\
void t() {
if (true) {
(ERROR);
} else {
}
}
\n\
String s() {
return null;
}
} """;
assertEquals("Unexpected AST, got:\n" + ast, expected, ast);
assertEquals("Unexpected errors, got:\n" + out.toString(),
out.toString().replaceAll("\\R", "\n"),
"""
Test.java:5:17: compiler.err.expected: token.identifier
Test.java:5:16: compiler.err.not.stmt
""");
}
@Test
void testAtRecovery() throws IOException {
//verify the errors and AST form produced for member selects which are
//missing the selected member name and are followed by an annotation:
String code = """
package t;
class Test {
int i1 = "".
@Deprecated
void t1() {
}
int i2 = String.
@Deprecated
void t2() {
}
}
""";
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null, List.of("-XDrawDiagnostics"),
null, Arrays.asList(new MyFileObject(code)));
String ast = ct.parse().iterator().next().toString().replaceAll("\\R", "\n");
String expected = """
package t;
\n\
class Test {
int i1 = "".<error>;
\n\
@Deprecated
void t1() {
}
int i2 = String.<error>;
\n\
@Deprecated
void t2() {
}
} """;
assertEquals("Unexpected AST, got:\n" + ast, expected, ast);
assertEquals("Unexpected errors, got:\n" + out.toString(),
out.toString().replaceAll("\\R", "\n"),
"""
Test.java:3:17: compiler.err.expected: token.identifier
Test.java:7:21: compiler.err.expected: token.identifier
""");
}
@Test //JDK-8256411
void testBasedAnonymous() throws IOException {
String code = """
package t;
class Test {
class I {}
static Object I = new Test().new I() {};
}
""";
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees trees = Trees.instance(ct);
SourcePositions sp = trees.getSourcePositions();
ct.analyze();
List<String> span = new ArrayList<>();
new TreeScanner<Void, Void>() {
public Void visitClass(ClassTree ct, Void v) {
if (ct.getExtendsClause() != null) {
int start = (int) sp.getStartPosition(cut,
ct.getExtendsClause());
int end = (int) sp.getEndPosition(cut,
ct.getExtendsClause());
span.add(code.substring(start, end));
}
return super.visitClass(ct, v);
}
}.scan(cut, null);
if (!Objects.equals(span, Arrays.asList("I"))) {
throw new AssertionError("Unexpected span: " + span);
}
}
@Test //JDK-8259050
void testBrokenUnicodeEscape() throws IOException {
String code = "package t;\n" +
"class Test {\n" +
" private String s1 = \"\\" + "uaaa\";\n" +
" private String s2 = \\" + "uaaa;\n" +
"}\n";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees trees = Trees.instance(ct);
String ast = cut.toString().replaceAll("\\R", "\n");
String expected = """
package t;
class Test {
private String s1 = "";
private String s2 = (ERROR);
} """;
assertEquals("Unexpected AST, got:\n" + ast, expected, ast);
List<String> codes = new LinkedList<>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testBrokenUnicodeEscape: " + codes,
Arrays.<String>asList("compiler.err.illegal.unicode.esc",
"compiler.err.illegal.unicode.esc"),
codes);
}
@Test //JDK-8259050
void testUsupportedTextBlock() throws IOException {
String code = """
package t;
class Test {
private String s = \"""
\""";
}""";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, List.of("--release", "14"),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees trees = Trees.instance(ct);
String ast = cut.toString().replaceAll("\\R", "\n");
String expected = """
package t;
class Test {
private String s = "";
} """;
assertEquals("Unexpected AST, got:\n" + ast, expected, ast);
List<String> codes = new LinkedList<>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getCode());
}
assertEquals("testUsupportedTextBlock: " + codes,
Arrays.<String>asList("compiler.err.feature.not.supported.in.source.plural"),
codes);
}
@Test //JDK-8266436
void testSyntheticConstructorReturnType() throws IOException {
String code = """
package test;
public class Test {
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ct.analyze();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree constr = (MethodTree) clazz.getMembers().get(0);
assertEquals("expected null as constructor return type", constr.getReturnType(), null);
}
@Test //JDK-8267221
void testVarArgArrayParameter() throws IOException {
String code = """
package test;
public class Test {
private void test(int[]... p) {}
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree constr = (MethodTree) clazz.getMembers().get(0);
VariableTree param = constr.getParameters().get(0);
SourcePositions sp = Trees.instance(ct).getSourcePositions();
int typeStart = (int) sp.getStartPosition(cut, param.getType());
int typeEnd = (int) sp.getEndPosition(cut, param.getType());
assertEquals("correct parameter type span", code.substring(typeStart, typeEnd), "int[]...");
}
@Test //JDK-8271928
void testX() throws IOException {
String code = """
package test;
public static void test() {
return test;
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
SourcePositions sp = Trees.instance(ct).getSourcePositions();
new TreePathScanner<Void, Void>() {
@Override
public Void visitErroneous(ErroneousTree tree, Void p) {
int pos = (int) sp.getStartPosition(cut, tree);
if (pos == (-1)) {
fail("Invalid source position for an ErroneousTree");
}
return scan(tree.getErrorTrees(), p);
}
}.scan(cut, null);
}
@Test //JDK-8275097
void testDefaultTagPosition() throws IOException {
String code = """
package t;
class Test {
private void test1(int i) {
switch (i) {
default:
}
}
private void test2(int i) {
switch (i) {
case default:
}
}
private int test3(int i) {
return switch (i) {
default: yield 0;
}
}
private int test4(int i) {
return switch (i) {
case default: yield 0;
}
}
private void test5(int i) {
switch (i) {
default -> {}
}
}
private void test6(int i) {
switch (i) {
case default -> {}
}
}
private int test5(int i) {
return switch (i) {
default -> { yield 0; }
}
}
private int test6(int i) {
return switch (i) {
case default -> { yield 0; }
}
}
private int test7(int i) {
return switch (i) {
default -> 0;
}
}
private int test8(int i) {
return switch (i) {
case default -> 0;
}
}
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees t = Trees.instance(ct);
SourcePositions sp = t.getSourcePositions();
new TreeScanner<Void, Void>() {
@Override
public Void visitDefaultCaseLabel(DefaultCaseLabelTree tree, Void p) {
int start = (int) sp.getStartPosition(cut, tree);
int end = (int) sp.getEndPosition(cut, tree);
String defaultName = code.substring(start, end);
if (!"default".equals(defaultName)) {
throw new AssertionError("Incorrect span: " + defaultName);
}
return super.visitDefaultCaseLabel(tree, p);
}
@Override
public Void visitCase(CaseTree node, Void p) {
scan(node.getLabels(), p);
if (node.getCaseKind() == CaseTree.CaseKind.RULE)
scan(node.getBody(), p);
else
scan(node.getStatements(), p);
return null;
}
}.scan(cut, null);
}
@Test
void testStringTemplate1() throws IOException {
String code = """
package test;
public class Test {
Test(int a) {
String s = "prefix \\{a} suffix";
}
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree constr = (MethodTree) clazz.getMembers().get(0);
VariableTree decl = (VariableTree) constr.getBody().getStatements().get(0);
SourcePositions sp = Trees.instance(ct).getSourcePositions();
int initStart = (int) sp.getStartPosition(cut, decl.getInitializer());
int initEnd = (int) sp.getEndPosition(cut, decl.getInitializer());
assertEquals("correct templated String span expected", code.substring(initStart, initEnd), "\"prefix \\{a} suffix\"");
}
@Test
void testStringTemplate2() throws IOException {
String code = """
package test;
public class Test {
Test(int a) {
String s = STR."prefix \\{a} suffix";
}
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null,
null, null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
MethodTree constr = (MethodTree) clazz.getMembers().get(0);
VariableTree decl = (VariableTree) constr.getBody().getStatements().get(0);
SourcePositions sp = Trees.instance(ct).getSourcePositions();
int initStart = (int) sp.getStartPosition(cut, decl.getInitializer());
int initEnd = (int) sp.getEndPosition(cut, decl.getInitializer());
assertEquals("correct templated String span expected", code.substring(initStart, initEnd), "STR.\"prefix \\{a} suffix\"");
}
@Test //JDK-8293897
void testImplicitFinalInTryWithResources() throws IOException {
String code = """
package t;
class Test {
void test1() {
try (AutoCloseable ac = null) {}
}
void test2() {
try (@Ann AutoCloseable withAnnotation = null) {}
}
void test3() {
try (final AutoCloseable withFinal = null) {}
}
void test4() {
try (final @Ann AutoCloseable withAnnotationFinal = null) {}
}
@interface Ann {}
}
""";
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, null, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
Trees t = Trees.instance(ct);
SourcePositions sp = t.getSourcePositions();
new TreeScanner<Void, Void>() {
boolean modifiersHaveFinal;
boolean modifiersHaveSpan;
@Override
public Void visitVariable(VariableTree node, Void p) {
boolean prevModifiersHaveFinal = modifiersHaveFinal;
boolean prevModifiersHaveSpan = modifiersHaveSpan;
try {
modifiersHaveFinal = node.getName().toString().contains("Final");
modifiersHaveSpan = modifiersHaveFinal ||
node.getName().toString().contains("Annotation");
return super.visitVariable(node, p);
} finally {
modifiersHaveFinal = prevModifiersHaveFinal;
modifiersHaveSpan = prevModifiersHaveSpan;
}
}
@Override
public Void visitClass(ClassTree node, Void p) {
boolean prevModifiersHaveSpan = modifiersHaveSpan;
try {
modifiersHaveSpan = node.getKind() == Kind.ANNOTATION_TYPE;
return super.visitClass(node, p);
} finally {
modifiersHaveSpan = prevModifiersHaveSpan;
}
}
@Override
public Void visitModifiers(ModifiersTree node, Void p) {
if (modifiersHaveFinal) {
if (!node.getFlags().contains(Modifier.FINAL)) {
throw new AssertionError("Expected final missing.");
}
} else {
if (node.getFlags().contains(Modifier.FINAL)) {
throw new AssertionError("Unexpected final modified.");
}
}
long start = sp.getStartPosition(cut, node);
long end = sp.getEndPosition(cut, node);
if (modifiersHaveSpan) {
if (start == (-1) || end == (-1)) {
throw new AssertionError("Incorrect modifier span: " + start + "-" + end);
}
} else {
if (start != (-1) || end != (-1)) {
throw new AssertionError("Incorrect modifier span: " + start + "-" + end);
}
}
return super.visitModifiers(node, p);
}
}.scan(cut, null);
}
@Test
void testIncompleteStringTemplate() throws IOException {
String template = "\"\\{o.toString()}\"";
String prefix = """
package t;
class Test {
void test(Object o) {
String s = STR.""";
Worker<Void> verifyParseable = task -> {
try {
task.parse().iterator().next();
return null;
} catch (IOException ex) {
throw new AssertionError(ex);
}
};
JavacTaskPool pool = new JavacTaskPool(1);
DiagnosticListener<JavaFileObject> dl = d -> {};
List<String> options = List.of("--enable-preview",
"-source", System.getProperty("java.specification.version"));
for (int i = 0; i < template.length(); i++) {
pool.getTask(null, fm, dl, options,
null, Arrays.asList(new MyFileObject(prefix + template.substring(0, i))),
verifyParseable
);
}
for (int i = 0; i < template.length() - 1; i++) {
pool.getTask(null, fm, dl, options,
null, Arrays.asList(new MyFileObject(prefix + template.substring(0, i) + "\"")),
verifyParseable);
}
String incomplete = prefix + "\"\\{o.";
pool.getTask(null, fm, dl, options,
null, Arrays.asList(new MyFileObject(incomplete)), task -> {
try {
CompilationUnitTree cut = task.parse().iterator().next();
String result = cut.toString().replaceAll("\\R", "\n");
System.out.println("RESULT\n" + result);
assertEquals("incorrect AST",
result,
"""
package t;
\n\
class Test {
\n\
void test(Object o) {
String s = STR.<error>;
}
}""");
return null;
} catch (IOException ex) {
throw new AssertionError(ex);
}
});
}
@Test //JDK-8295401
void testModuleInfoProvidesRecovery() throws IOException {
String code = """
module m {
$DIRECTIVE
}
""";
record Test(String directive, int prefix, Kind expectedKind) {}
Test[] tests = new Test[] {
new Test("uses api.api.API;", 4, Kind.USES),
new Test("opens api.api to other.module;", 5, Kind.OPENS),
new Test("exports api.api to other.module;", 7, Kind.EXPORTS),
new Test("provides java.util.spi.ToolProvider with impl.ToolProvider;", 8, Kind.PROVIDES),
};
JavacTaskPool pool = new JavacTaskPool(1);
for (Test test : tests) {
String directive = test.directive();
for (int i = test.prefix(); i < directive.length(); i++) {
String replaced = code.replace("$DIRECTIVE", directive.substring(0, i));
pool.getTask(null, null, d -> {}, List.of(), null, List.of(new MyFileObject(replaced)), task -> {
try {
CompilationUnitTree cut = task.parse().iterator().next();
new TreePathScanner<Void, Void>() {
@Override
public Void visitModule(ModuleTree node, Void p) {
assertEquals("Unexpected directives size: " + node.getDirectives().size(),
node.getDirectives().size(),
1);
assertEquals("Unexpected directive: " + node.getDirectives().get(0).getKind(),
node.getDirectives().get(0).getKind(),
test.expectedKind);
return super.visitModule(node, p);
}
}.scan(cut, null);
return null;
} catch (IOException ex) {
throw new IllegalStateException(ex);
}
});
}
}
String extendedCode = """
module m {
provides ;
provides java.;
provides java.util.spi.ToolProvider with ;
provides java.util.spi.ToolProvider with impl.;
""";
pool.getTask(null, null, d -> {}, List.of(), null, List.of(new MyFileObject("module-info", extendedCode)), task -> {
try {
CompilationUnitTree cut = task.parse().iterator().next();
task.analyze();
new TreePathScanner<Void, Void>() {
@Override
public Void visitModule(ModuleTree node, Void p) {
assertEquals("Unexpected directives size: " + node.getDirectives().size(),
node.getDirectives().size(),
4);
return super.visitModule(node, p);
}
}.scan(cut, null);
return null;
} catch (IOException ex) {
throw new IllegalStateException(ex);
}
});
}
@Test //JDK-8304671
void testEnumConstantUnderscore() throws IOException {
record TestCase(String code, String release, String ast, String errors) {}
TestCase[] testCases = new TestCase[] {
new TestCase("""
package t;
enum Test {
_
}
""",
"8",
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
} """,
"""
- compiler.warn.option.obsolete.source: 8
- compiler.warn.option.obsolete.target: 8
- compiler.warn.option.obsolete.suppression
Test.java:3:5: compiler.warn.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
_
}
""",
System.getProperty("java.specification.version"),
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
} """,
"""
Test.java:3:5: compiler.err.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
_;
}
""",
"8",
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
} """,
"""
- compiler.warn.option.obsolete.source: 8
- compiler.warn.option.obsolete.target: 8
- compiler.warn.option.obsolete.suppression
Test.java:3:5: compiler.warn.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
_;
}
""",
System.getProperty("java.specification.version"),
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
} """,
"""
Test.java:3:5: compiler.err.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
A;
void t() {}
_;
}
""",
"8",
"""
package t;
\n\
enum Test {
/*public static final*/ A /* = new Test() */ /*enum*/ ,
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
\n\
void t() {
}
} """,
"""
- compiler.warn.option.obsolete.source: 8
- compiler.warn.option.obsolete.target: 8
- compiler.warn.option.obsolete.suppression
Test.java:5:5: compiler.err.enum.constant.not.expected
Test.java:5:5: compiler.warn.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
A;
void t() {}
_;
}
""",
System.getProperty("java.specification.version"),
"""
package t;
\n\
enum Test {
/*public static final*/ A /* = new Test() */ /*enum*/ ,
/*public static final*/ _ /* = new Test() */ /*enum*/ ;
\n\
void t() {
}
} """,
"""
Test.java:5:5: compiler.err.enum.constant.not.expected
"""),
new TestCase("""
package t;
enum Test {
_ {},
A;
}
""",
"8",
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ {
},
/*public static final*/ A /* = new Test() */ /*enum*/ ;
} """,
"""
- compiler.warn.option.obsolete.source: 8
- compiler.warn.option.obsolete.target: 8
- compiler.warn.option.obsolete.suppression
Test.java:3:5: compiler.warn.underscore.as.identifier
"""),
new TestCase("""
package t;
enum Test {
_ {},
A;
}
""",
System.getProperty("java.specification.version"),
"""
package t;
\n\
enum Test {
/*public static final*/ _ /* = new Test() */ /*enum*/ {
},
/*public static final*/ A /* = new Test() */ /*enum*/ ;
} """,
"""
Test.java:3:5: compiler.err.underscore.as.identifier
"""),
};
for (TestCase testCase : testCases) {
StringWriter out = new StringWriter();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(out, fm, null,
List.of("-XDrawDiagnostics", "--release", testCase.release),
null, Arrays.asList(new MyFileObject(testCase.code)));
String ast = ct.parse().iterator().next().toString().replaceAll("\\R", "\n");
assertEquals("Unexpected AST, got:\n" + ast, testCase.ast, ast);
assertEquals("Unexpected errors, got:\n" + out.toString(),
out.toString().replaceAll("\\R", "\n"),
testCase.errors);
}
}
@Test
void testGuardRecovery() throws IOException {
String code = """
package t;
class Test {
private int t(Integer i, boolean b) {
switch (i) {
case 0 when b -> {}
case null when b -> {}
default when b -> {}
}
return switch (i) {
case 0 when b -> 0;
case null when b -> 0;
default when b -> 0;
};
}
}""";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
new TreeScanner<Void, Void>() {
@Override
public Void visitCase(CaseTree node, Void p) {
assertNotNull(node.getGuard());
assertEquals("guard kind", Kind.ERRONEOUS, node.getGuard().getKind());
assertEquals("guard content",
List.of("b"),
((ErroneousTree) node.getGuard()).getErrorTrees()
.stream()
.map(t -> t.toString()).toList());
return super.visitCase(node, p);
}
}.scan(cut, null);
List<String> codes = new LinkedList<>();
for (Diagnostic<? extends JavaFileObject> d : coll.getDiagnostics()) {
codes.add(d.getLineNumber() + ":" + d.getColumnNumber() + ":" + d.getCode());
}
assertEquals("testUsupportedTextBlock: " + codes,
List.of("5:20:compiler.err.guard.not.allowed",
"6:23:compiler.err.guard.not.allowed",
"7:21:compiler.err.guard.not.allowed",
"10:20:compiler.err.guard.not.allowed",
"11:23:compiler.err.guard.not.allowed",
"12:21:compiler.err.guard.not.allowed"),
codes);
}
@Test //JDK-8312093
void testJavadoc() throws IOException {
String code = """
public class Test {
/***/
void main() {
}
}
""";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll, null,
null, Arrays.asList(new MyFileObject(code)));
Trees trees = Trees.instance(ct);
CompilationUnitTree cut = ct.parse().iterator().next();
new TreePathScanner<Void, Void>() {
@Override
public Void visitMethod(MethodTree node, Void p) {
if (!node.getName().contentEquals("main")) {
return null;
}
String comment = trees.getDocComment(getCurrentPath());
assertEquals("Expecting empty comment", "", comment);
return null;
}
}.scan(cut, null);
}
@Test //JDK-8315452
void testPartialTopLevelModifiers() throws IOException {
String code = """
package test;
public
""";
DiagnosticCollector<JavaFileObject> coll =
new DiagnosticCollector<>();
JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, fm, coll,
List.of("--enable-preview", "--source", SOURCE_VERSION),
null, Arrays.asList(new MyFileObject(code)));
CompilationUnitTree cut = ct.parse().iterator().next();
String result = toStringWithErrors(cut).replaceAll("\\R", "\n");
System.out.println("RESULT\n" + result);
assertEquals("incorrect AST",
result,
"""
package test;
(ERROR: public )""");
}
void run(String[] args) throws Exception {
int passed = 0, failed = 0;
final Pattern p = (args != null && args.length > 0)
? Pattern.compile(args[0])
: null;
for (Method m : this.getClass().getDeclaredMethods()) {
boolean selected = (p == null)
? m.isAnnotationPresent(Test.class)
: p.matcher(m.getName()).matches();
if (selected) {
try {
m.invoke(this, (Object[]) null);
System.out.println(m.getName() + ": OK");
passed++;
} catch (Throwable ex) {
System.out.printf("Test %s failed: %s %n", m, ex.getCause());
failed++;
}
}
}
System.out.printf("Passed: %d, Failed %d%n", passed, failed);
if (failed > 0) {
throw new RuntimeException("Tests failed: " + failed);
}
if (passed == 0 && failed == 0) {
throw new AssertionError("No test(s) selected: passed = " +
passed + ", failed = " + failed + " ??????????");
}
}
private String toStringWithErrors(Tree tree) {
StringWriter s = new StringWriter();
try {
new PrettyWithErrors(s, false).printExpr((JCTree) tree);
} catch (IOException e) {
// should never happen, because StringWriter is defined
// never to throw any IOExceptions
throw new AssertionError(e);
}
return s.toString();
}
private static final class PrettyWithErrors extends Pretty {
public PrettyWithErrors(Writer out, boolean sourceOutput) {
super(out, sourceOutput);
}
@Override
public void visitErroneous(JCErroneous tree) {
try {
print("(ERROR: ");
print(tree.errs);
print(")");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
}
abstract class TestCase {
void assertEquals(String message, int i, int pos) {
if (i != pos) {
fail(message);
}
}
void assertFalse(String message, boolean bvalue) {
if (bvalue == true) {
fail(message);
}
}
void assertTrue(String message, boolean bvalue) {
if (bvalue == false) {
fail(message);
}
}
void assertEquals(String message, int i, long l) {
if (i != l) {
fail(message + ":" + i + ":" + l);
}
}
void assertEquals(String message, Object o1, Object o2) {
if (!Objects.equals(o1, o2)) {
fail(message);
}
}
void assertNotNull(Object o) {
if (o == null) {
fail();
}
}
void fail() {
fail("test failed");
}
void fail(String message) {
throw new RuntimeException(message);
}
/**
* Indicates that the annotated method is a test method.
*/
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface Test {}
}