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/**
* @test
* @summary tests for module resolution
* @library /tools/lib
* @modules
* jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* @build toolbox.ToolBox toolbox.JavacTask ModuleTestBase
* @run main QueryBeforeEnter
*/
import java.io.File;
import java.io.OutputStream;
import java.nio.file.*;
import java.util.Arrays;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.annotation.processing.SupportedAnnotationTypes;
import javax.annotation.processing.SupportedSourceVersion;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.TypeElement;
import javax.tools.JavaCompiler;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
// import com.sun.source.util.JavacTask;
import com.sun.source.util.Plugin;
import com.sun.source.util.TaskEvent;
import com.sun.source.util.TaskListener;
import com.sun.tools.javac.Main;
import toolbox.JavacTask;
import toolbox.Task;
import toolbox.ToolBox;
public class QueryBeforeEnter extends ModuleTestBase {
public static void main(String... args) throws Exception {
QueryBeforeEnter t = new QueryBeforeEnter();
t.runTests();
}
@Test
public void testEmpty(Path base) throws Exception {
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
com.sun.source.util.JavacTask task =
(com.sun.source.util.JavacTask) javaCompiler.getTask(null, null, null, null, null, null);
TypeElement jlString = task.getElements().getTypeElement("java.lang.String");
assertNotNull(jlString);
}
@Test
public void testUnnamed(Path base) throws Exception {
Path moduleSrc = base.resolve("module-src");
Path m1 = moduleSrc.resolve("m1");
tb.writeJavaFiles(m1,
"module m1 { exports m1; }",
"package m1; public class M1 {}");
Path m2 = moduleSrc.resolve("m2");
tb.writeJavaFiles(m2,
"module m2 { exports m2; }",
"package m2; public class M2 {}");
Path modulePath = base.resolve("module-path");
Files.createDirectories(modulePath);
new JavacTask(tb)
.options("-modulesourcepath", moduleSrc.toString())
.outdir(modulePath)
.files(findJavaFiles(moduleSrc))
.run()
.writeAll();
Path cpSrc = base.resolve("cp-src");
tb.writeJavaFiles(cpSrc,
"package cp; public class CP {}");
Path cp = base.resolve("cp");
Files.createDirectories(cp);
new JavacTask(tb)
.outdir(cp)
.files(findJavaFiles(cpSrc))
.run()
.writeAll();
Path src = base.resolve("src");
tb.writeJavaFiles(src,
"package test; public class Test1 {}",
"package test; public class Test2 {}");
Path out = base.resolve("out");
Files.createDirectories(out);
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = javaCompiler.getStandardFileManager(null, null, null)) {
com.sun.source.util.JavacTask task =
(com.sun.source.util.JavacTask) javaCompiler.getTask(null,
null,
d -> { throw new IllegalStateException(d.toString()); },
Arrays.asList("-modulepath", modulePath.toString(),
"-classpath", cp.toString(),
"-sourcepath", src.toString()),
null,
fm.getJavaFileObjects(src.resolve("test").resolve("Test2.java")));
assertNotNull(task.getElements().getTypeElement("java.lang.String"));
assertNotNull(task.getElements().getTypeElement("javax.tools.ToolProvider"));
assertNull(task.getElements().getTypeElement("m1.M1"));
assertNull(task.getElements().getTypeElement("m2.M2"));
assertNotNull(task.getElements().getTypeElement("cp.CP"));
assertNotNull(task.getElements().getTypeElement("test.Test1"));
assertNotNull(task.getElements().getTypeElement("test.Test2"));
assertNotNull(task.getElements().getModuleElement("java.base"));
assertNotNull(task.getElements().getModuleElement("java.compiler"));
assertNull(task.getElements().getModuleElement("m1"));
assertNull(task.getElements().getModuleElement("m2"));
}
}
@Test
public void testSingleNamed(Path base) throws Exception {
Path moduleSrc = base.resolve("module-src");
Path m1 = moduleSrc.resolve("m1");
tb.writeJavaFiles(m1,
"module m1 { exports m1; }",
"package m1; public class M1 {}");
Path m2 = moduleSrc.resolve("m2");
tb.writeJavaFiles(m2,
"module m2 { exports m2; }",
"package m2; public class M2 {}");
Path modulePath = base.resolve("module-path");
Files.createDirectories(modulePath);
new JavacTask(tb)
.options("-modulesourcepath", moduleSrc.toString())
.outdir(modulePath)
.files(findJavaFiles(moduleSrc))
.run()
.writeAll();
Path cpSrc = base.resolve("cp-src");
tb.writeJavaFiles(cpSrc,
"package cp; public class CP {}");
Path cp = base.resolve("cp");
Files.createDirectories(cp);
new JavacTask(tb)
.outdir(cp)
.files(findJavaFiles(cpSrc))
.run()
.writeAll();
Path src = base.resolve("src");
tb.writeJavaFiles(src,
"module test { requires java.base; requires m1; } ",
"package test; public class Test {}");
Path out = base.resolve("out");
Files.createDirectories(out);
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = javaCompiler.getStandardFileManager(null, null, null)) {
com.sun.source.util.JavacTask task =
(com.sun.source.util.JavacTask) javaCompiler.getTask(null,
null,
d -> { throw new IllegalStateException(d.toString()); },
Arrays.asList("-modulepath", modulePath.toString(),
"-classpath", cp.toString(),
"-sourcepath", src.toString()),
null,
fm.getJavaFileObjects(findJavaFiles(src)));
assertNotNull(task.getElements().getTypeElement("java.lang.String"));
assertNull(task.getElements().getTypeElement("javax.tools.ToolProvider"));
assertNotNull(task.getElements().getTypeElement("m1.M1"));
assertNull(task.getElements().getTypeElement("m2.M2"));
assertNotNull(task.getElements().getTypeElement("test.Test"));
assertNotNull(task.getElements().getModuleElement("java.base"));
assertNull(task.getElements().getModuleElement("java.compiler"));
assertNotNull(task.getElements().getModuleElement("m1"));
assertNull(task.getElements().getModuleElement("m2"));
assertNotNull(task.getElements().getModuleElement("test"));
}
}
@Test
public void testMultiModule(Path base) throws Exception {
Path modulePathSrc = base.resolve("module-path-src");
Path m1 = modulePathSrc.resolve("m1");
tb.writeJavaFiles(m1,
"module m1 { exports m1; }",
"package m1; public class M1 {}");
Path m2 = modulePathSrc.resolve("m2");
tb.writeJavaFiles(m2,
"module m2 { exports m2; }",
"package m2; public class M2 {}");
Path modulePath = base.resolve("module-path");
Files.createDirectories(modulePath);
new JavacTask(tb)
.options("-modulesourcepath", modulePathSrc.toString())
.outdir(modulePath)
.files(findJavaFiles(modulePathSrc))
.run()
.writeAll();
Path cpSrc = base.resolve("cp-src");
tb.writeJavaFiles(cpSrc,
"package cp; public class CP {}");
Path cp = base.resolve("cp");
Files.createDirectories(cp);
new JavacTask(tb)
.outdir(cp)
.files(findJavaFiles(cpSrc))
.run()
.writeAll();
Path moduleSrc = base.resolve("module-src");
Path m3 = moduleSrc.resolve("m3");
tb.writeJavaFiles(m3,
"module m3 { requires m1; exports m3; }",
"package m3; public class M3 { }");
Path m4 = moduleSrc.resolve("m4");
tb.writeJavaFiles(m4,
"module m4 { exports m4; }",
"package m4; public class M4 {}");
Path out = base.resolve("out");
Files.createDirectories(out);
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fm = javaCompiler.getStandardFileManager(null, null, null)) {
com.sun.source.util.JavacTask task =
(com.sun.source.util.JavacTask) javaCompiler.getTask(null,
null,
d -> { throw new IllegalStateException(d.toString()); },
Arrays.asList("-modulepath", modulePath.toString(),
"-classpath", cp.toString(),
"-modulesourcepath", moduleSrc.toString(),
"-d", out.toString()),
null,
fm.getJavaFileObjects(findJavaFiles(moduleSrc)));
assertNotNull(task.getElements().getTypeElement("java.lang.String"));
assertNull(task.getElements().getTypeElement("javax.tools.ToolProvider"));
assertNotNull(task.getElements().getTypeElement("m1.M1"));
assertNull(task.getElements().getTypeElement("m2.M2"));
assertNotNull(task.getElements().getTypeElement("m3.M3"));
assertNotNull(task.getElements().getTypeElement("m4.M4"));
assertNotNull(task.getElements().getModuleElement("java.base"));
assertNull(task.getElements().getModuleElement("java.compiler"));
assertNotNull(task.getElements().getModuleElement("m1"));
assertNull(task.getElements().getModuleElement("m2"));
assertNotNull(task.getElements().getModuleElement("m3"));
assertNotNull(task.getElements().getModuleElement("m4"));
}
}
@Test
public void testTooSoon(Path base) throws Exception {
Path src = base.resolve("src");
tb.writeJavaFiles(src,
"package test; public class Test {}");
Path out = base.resolve("out");
Files.createDirectories(out);
Path reg = base.resolve("reg");
Path regFile = reg.resolve("META-INF").resolve("services").resolve(Plugin.class.getName());
Files.createDirectories(regFile.getParent());
try (OutputStream regOut = Files.newOutputStream(regFile)) {
regOut.write(PluginImpl.class.getName().getBytes());
}
String processorPath = System.getProperty("test.class.path") + File.pathSeparator + reg.toString();
JavaCompiler javaCompiler = ToolProvider.getSystemJavaCompiler();
Path testSource = src.resolve("test").resolve("Test.java");
try (StandardJavaFileManager fm = javaCompiler.getStandardFileManager(null, null, null)) {
com.sun.source.util.JavacTask task =
(com.sun.source.util.JavacTask) javaCompiler.getTask(null,
null,
d -> { throw new IllegalStateException(d.toString()); },
Arrays.asList("-processorpath", processorPath,
"-processor", AP.class.getName(),
"-Xplugin:test"),
null,
fm.getJavaFileObjects(testSource));
task.call();
}
Main.compile(new String[] {"-processorpath", processorPath,
"-Xplugin:test",
testSource.toString()});
}
public static class PluginImpl implements Plugin {
@Override
public String getName() {
return "test";
}
@Override
public void init(com.sun.source.util.JavacTask task, String... args) {
task.addTaskListener(new TaskListener() {
boolean wasEntered;
@Override
public void started(TaskEvent e) {
switch (e.getKind()) {
case COMPILATION: case PARSE:
shouldFail(e.getKind());
break;
case ANNOTATION_PROCESSING: case ENTER:
if (wasEntered) {
shouldPass(e.getKind());
} else {
shouldFail(e.getKind());
}
break;
default:
shouldPass(e.getKind());
break;
}
}
@Override
public void finished(TaskEvent e) {
switch (e.getKind()) {
case PARSE:
shouldFail(e.getKind());
break;
case ENTER:
wasEntered = true;
//fall-through:
default:
shouldPass(e.getKind());
break;
}
}
private void shouldFail(TaskEvent.Kind kind) {
try {
task.getElements().getTypeElement("java.lang.String");
throw new AssertionError("Expected exception not observed; kind=" + kind.name());
} catch (IllegalStateException ex) {
//correct
}
}
private void shouldPass(TaskEvent.Kind kind) {
assertNotNull(task.getElements().getTypeElement("java.lang.String"));
}
});
}
}
@SupportedAnnotationTypes("*")
public static final class AP extends AbstractProcessor {
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
return false;
}
@Override
public SourceVersion getSupportedSourceVersion() {
return SourceVersion.latest();
}
}
private static void assertNotNull(Object actual) {
if (actual == null) {
throw new AssertionError("unexpected null!");
}
}
private static void assertNull(Object actual) {
if (actual != null) {
throw new AssertionError("unexpected non null!");
}
}
}