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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
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* 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.
*
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*/
/*
* @test
* @bug 4813736
* @summary Additional functionality test of task and JSR 269
* @author Peter von der Ah\u00e9
* @library ./lib
* @run main TestJavacTaskScanner TestJavacTaskScanner.java
*/
import com.sun.tools.javac.api.JavacTaskImpl;
import com.sun.tools.javac.parser.*;
import com.sun.tools.javac.util.*;
import java.io.*;
import java.net.*;
import java.nio.*;
import java.nio.charset.Charset;
import java.util.Arrays;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.DeclaredType;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.Elements;
import javax.lang.model.util.Types;
import javax.tools.*;
import static javax.tools.StandardLocation.CLASS_PATH;
import static javax.tools.StandardLocation.SOURCE_PATH;
import static javax.tools.StandardLocation.CLASS_OUTPUT;
public class TestJavacTaskScanner extends ToolTester {
final JavacTaskImpl task;
final Elements elements;
final Types types;
int numTokens;
int numParseTypeElements;
int numAllMembers;
TestJavacTaskScanner(File file) {
final Iterable<? extends JavaFileObject> compilationUnits =
fm.getJavaFileObjects(new File[] {file});
StandardJavaFileManager fm = getLocalFileManager(tool, null, null);
task = (JavacTaskImpl)tool.getTask(null, fm, null, null, null, compilationUnits);
task.getContext().put(ScannerFactory.scannerFactoryKey,
new MyScanner.Factory(task.getContext(), this));
elements = task.getElements();
types = task.getTypes();
}
public void run() {
Iterable<? extends TypeElement> toplevels;
try {
toplevels = task.enter(task.parse());
} catch (IOException ex) {
throw new AssertionError(ex);
}
for (TypeElement clazz : toplevels) {
System.out.format("Testing %s:%n%n", clazz.getSimpleName());
testParseType(clazz);
testGetAllMembers(clazz);
System.out.println();
System.out.println();
System.out.println();
}
System.out.println("#tokens: " + numTokens);
System.out.println("#parseTypeElements: " + numParseTypeElements);
System.out.println("#allMembers: " + numAllMembers);
check(numTokens, "#Tokens", 1222);
check(numParseTypeElements, "#parseTypeElements", 136);
check(numAllMembers, "#allMembers", 67);
}
void check(int value, String name, int expected) {
// allow some slop in the comparison to allow for minor edits in the
// test and in the platform
if (value < expected * 9 / 10)
throw new Error(name + " lower than expected; expected " + expected + "; found: " + value);
if (value > expected * 11 / 10)
throw new Error(name + " higher than expected; expected " + expected + "; found: " + value);
}
void testParseType(TypeElement clazz) {
DeclaredType type = (DeclaredType)task.parseType("List<String>", clazz);
for (Element member : elements.getAllMembers((TypeElement)type.asElement())) {
TypeMirror mt = types.asMemberOf(type, member);
System.out.format("%s : %s -> %s%n", member.getSimpleName(), member.asType(), mt);
numParseTypeElements++;
}
}
public static void main(String... args) throws IOException {
String srcdir = System.getProperty("test.src");
new TestJavacTaskScanner(new File(srcdir, args[0])).run();
}
private void testGetAllMembers(TypeElement clazz) {
for (Element member : elements.getAllMembers(clazz)) {
System.out.format("%s : %s%n", member.getSimpleName(), member.asType());
numAllMembers++;
}
}
/* Similar to ToolTester.getFileManager, except that this version also ensures
* javac classes will be available on the classpath. The javac classes are assumed
* to be on the classpath used to run this test (this is true when using jtreg).
* The classes are found by obtaining the URL for a sample javac class, using
* getClassLoader().getResource(), and then deconstructing the URL to find the
* underlying directory or jar file to place on the classpath.
*/
public StandardJavaFileManager getLocalFileManager(JavaCompiler tool,
DiagnosticListener<JavaFileObject> dl,
Charset encoding) {
File javac_classes;
try {
final String javacMainClass = "com/sun/tools/javac/Main.class";
URL url = getClass().getClassLoader().getResource(javacMainClass);
if (url == null)
throw new Error("can't locate javac classes");
URI uri = url.toURI();
String scheme = uri.getScheme();
String ssp = uri.getSchemeSpecificPart();
if (scheme.equals("jar")) {
javac_classes = new File(new URI(ssp.substring(0, ssp.indexOf("!/"))));
} else if (scheme.equals("file")) {
javac_classes = new File(ssp.substring(0, ssp.indexOf(javacMainClass)));
} else
throw new Error("unknown URL: " + url);
} catch (URISyntaxException e) {
throw new Error(e);
}
System.err.println("javac_classes: " + javac_classes);
StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding);
try {
fm.setLocation(SOURCE_PATH, Arrays.asList(test_src));
fm.setLocation(CLASS_PATH, Arrays.asList(test_classes, javac_classes));
fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes));
} catch (IOException e) {
throw new AssertionError(e);
}
return fm;
}
}
class MyScanner extends Scanner {
public static class Factory extends ScannerFactory {
public Factory(Context context, TestJavacTaskScanner test) {
super(context);
this.test = test;
}
@Override
public Scanner newScanner(CharSequence input, boolean keepDocComments) {
assert !keepDocComments;
if (input instanceof CharBuffer) {
return new MyScanner(this, (CharBuffer)input, test);
} else {
char[] array = input.toString().toCharArray();
return newScanner(array, array.length, keepDocComments);
}
}
@Override
public Scanner newScanner(char[] input, int inputLength, boolean keepDocComments) {
assert !keepDocComments;
return new MyScanner(this, input, inputLength, test);
}
private TestJavacTaskScanner test;
}
protected MyScanner(ScannerFactory fac, CharBuffer buffer, TestJavacTaskScanner test) {
super(fac, buffer);
this.test = test;
}
protected MyScanner(ScannerFactory fac, char[] input, int inputLength, TestJavacTaskScanner test) {
super(fac, input, inputLength);
this.test = test;
}
public void nextToken() {
super.nextToken();
System.err.format("Saw token %s (%s)%n", token(), name());
test.numTokens++;
}
private TestJavacTaskScanner test;
}