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package org.javacs;
import com.google.common.reflect.ClassPath;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.net.URLClassLoader;
import java.nio.file.FileSystems;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import java.util.function.Function;
import java.util.logging.Logger;
import java.util.stream.Collectors;
class Classes {
/** All exported modules in the JDK */
static String[] JDK_MODULES = {
"java.activation",
"java.base",
"java.compiler",
"java.corba",
"java.datatransfer",
"java.desktop",
"java.instrument",
"java.jnlp",
"java.logging",
"java.management",
"java.management.rmi",
"java.naming",
"java.prefs",
"java.rmi",
"java.scripting",
"java.se",
"java.se.ee",
"java.security.jgss",
"java.security.sasl",
"java.smartcardio",
"java.sql",
"java.sql.rowset",
"java.transaction",
"java.xml",
"java.xml.bind",
"java.xml.crypto",
"java.xml.ws",
"java.xml.ws.annotation",
"javafx.base",
"javafx.controls",
"javafx.fxml",
"javafx.graphics",
"javafx.media",
"javafx.swing",
"javafx.web",
"jdk.accessibility",
"jdk.attach",
"jdk.charsets",
"jdk.compiler",
"jdk.crypto.cryptoki",
"jdk.crypto.ec",
"jdk.dynalink",
"jdk.editpad",
"jdk.hotspot.agent",
"jdk.httpserver",
"jdk.incubator.httpclient",
"jdk.jartool",
"jdk.javadoc",
"jdk.jcmd",
"jdk.jconsole",
"jdk.jdeps",
"jdk.jdi",
"jdk.jdwp.agent",
"jdk.jfr",
"jdk.jlink",
"jdk.jshell",
"jdk.jsobject",
"jdk.jstatd",
"jdk.localedata",
"jdk.management",
"jdk.management.agent",
"jdk.management.cmm",
"jdk.management.jfr",
"jdk.management.resource",
"jdk.naming.dns",
"jdk.naming.rmi",
"jdk.net",
"jdk.pack",
"jdk.packager.services",
"jdk.rmic",
"jdk.scripting.nashorn",
"jdk.sctp",
"jdk.security.auth",
"jdk.security.jgss",
"jdk.snmp",
"jdk.xml.dom",
"jdk.zipfs",
};
static ClassSource jdkTopLevelClasses() {
var classes = new HashSet<String>();
var fs = FileSystems.getFileSystem(URI.create("jrt:/"));
for (var m : JDK_MODULES) {
var moduleRoot = fs.getPath(String.format("/modules/%s/", m));
try {
Files.walk(moduleRoot)
.forEach(
classFile -> {
var relative = moduleRoot.relativize(classFile).toString();
if (relative.endsWith(".class") && !relative.contains("$")) {
var trim = relative.substring(0, relative.length() - ".class".length());
var qualifiedName = trim.replace(File.separatorChar, '.');
classes.add(qualifiedName);
}
});
} catch (IOException e) {
throw new RuntimeException(e);
}
}
LOG.info(String.format("Found %d classes in the java platform", classes.size()));
class PlatformClassSource implements ClassSource {
public Set<String> classes() {
return Collections.unmodifiableSet(classes);
}
public Class<?> load(String className) {
try {
return ClassLoader.getPlatformClassLoader().loadClass(className);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
}
return new PlatformClassSource();
}
static ClassSource classPathTopLevelClasses(Set<Path> classPath) {
Function<Path, URL> toUrl =
p -> {
try {
return p.toUri().toURL();
} catch (MalformedURLException e) {
throw new RuntimeException(e);
}
};
var urls = classPath.stream().map(toUrl).toArray(URL[]::new);
var classLoader = new URLClassLoader(urls, null);
ClassPath scanner;
try {
scanner = ClassPath.from(classLoader);
} catch (IOException e) {
throw new RuntimeException(e);
}
var classes = scanner.getTopLevelClasses().stream().map(info -> info.getName()).collect(Collectors.toSet());
LOG.info(String.format("Found %d classes in %s", classes.size(), classPath));
class ClassPathClassSource implements ClassSource {
public Set<String> classes() {
return Collections.unmodifiableSet(classes);
}
public Class<?> load(String className) {
try {
return classLoader.loadClass(className);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
}
return new ClassPathClassSource();
}
private static final Logger LOG = Logger.getLogger("main");
}
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