tenfourfox/build/annotationProcessors/SDKProcessor.java
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

259 lines
10 KiB
Java

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.annotationProcessors;
import com.android.tools.lint.checks.ApiLookup;
import com.android.tools.lint.LintCliClient;
import org.mozilla.gecko.annotationProcessors.classloader.AnnotatableEntity;
import org.mozilla.gecko.annotationProcessors.classloader.ClassWithOptions;
import org.mozilla.gecko.annotationProcessors.classloader.IterableJarLoadingURLClassLoader;
import org.mozilla.gecko.annotationProcessors.utils.GeneratableElementIterator;
import org.mozilla.gecko.annotationProcessors.utils.Utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Properties;
import java.util.Scanner;
import java.util.Vector;
import java.net.URL;
import java.net.URLClassLoader;
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
public class SDKProcessor {
public static final String GENERATED_COMMENT =
"// GENERATED CODE\n" +
"// Generated by the Java program at /build/annotationProcessors at compile time\n" +
"// from annotations on Java methods. To update, change the annotations on the\n" +
"// corresponding Javamethods and rerun the build. Manually updating this file\n" +
"// will cause your build to fail.\n" +
"\n";
private static ApiLookup sApiLookup;
private static int sMaxSdkVersion;
public static void main(String[] args) throws Exception {
// We expect a list of jars on the commandline. If missing, whinge about it.
if (args.length < 5) {
System.err.println("Usage: java SDKProcessor sdkjar classlistfile outdir fileprefix max-sdk-version");
System.exit(1);
}
System.out.println("Processing platform bindings...");
String sdkJar = args[0];
Vector classes = getClassList(args[1]);
String outdir = args[2];
String generatedFilePrefix = args[3];
sMaxSdkVersion = Integer.parseInt(args[4]);
LintCliClient lintClient = new LintCliClient();
sApiLookup = ApiLookup.get(lintClient);
// Start the clock!
long s = System.currentTimeMillis();
// Get an iterator over the classes in the jar files given...
// Iterator<ClassWithOptions> jarClassIterator = IterableJarLoadingURLClassLoader.getIteratorOverJars(args);
StringBuilder headerFile = new StringBuilder(GENERATED_COMMENT);
headerFile.append(
"#ifndef " + generatedFilePrefix + "_h__\n" +
"#define " + generatedFilePrefix + "_h__\n" +
"\n" +
"#include \"mozilla/jni/Refs.h\"\n" +
"\n" +
"namespace mozilla {\n" +
"namespace widget {\n" +
"namespace sdk {\n" +
"\n");
StringBuilder implementationFile = new StringBuilder(GENERATED_COMMENT);
implementationFile.append(
"#include \"" + generatedFilePrefix + ".h\"\n" +
"#include \"mozilla/jni/Accessors.h\"\n" +
"\n" +
"namespace mozilla {\n" +
"namespace widget {\n" +
"namespace sdk {\n" +
"\n");
// Used to track the calls to the various class-specific initialisation functions.
ClassLoader loader = null;
try {
loader = URLClassLoader.newInstance(new URL[] { new URL("file://" + sdkJar) },
SDKProcessor.class.getClassLoader());
} catch (Exception e) {
throw new RuntimeException(e.toString());
}
for (Iterator<String> i = classes.iterator(); i.hasNext(); ) {
String className = i.next();
System.out.println("Looking up: " + className);
generateClass(Class.forName(className, true, loader),
implementationFile,
headerFile);
}
implementationFile.append(
"} /* sdk */\n" +
"} /* widget */\n" +
"} /* mozilla */\n");
headerFile.append(
"} /* sdk */\n" +
"} /* widget */\n" +
"} /* mozilla */\n" +
"#endif\n");
writeOutputFiles(outdir, generatedFilePrefix, headerFile, implementationFile);
long e = System.currentTimeMillis();
System.out.println("SDK processing complete in " + (e - s) + "ms");
}
private static int getAPIVersion(Class<?> cls, Member m) {
if (m instanceof Method || m instanceof Constructor) {
return sApiLookup.getCallVersion(
cls.getName().replace('.', '/'),
Utils.getMemberName(m),
Utils.getSignature(m));
} else if (m instanceof Field) {
return sApiLookup.getFieldVersion(
Utils.getClassDescriptor(m.getDeclaringClass()), m.getName());
} else {
throw new IllegalArgumentException("expected member to be Method, Constructor, or Field");
}
}
private static Member[] sortAndFilterMembers(Class<?> cls, Member[] members) {
Arrays.sort(members, new Comparator<Member>() {
@Override
public int compare(Member a, Member b) {
return a.getName().compareTo(b.getName());
}
});
ArrayList<Member> list = new ArrayList<>();
for (Member m : members) {
// Sometimes (e.g. Bundle) has methods that moved to/from a superclass in a later SDK
// version, so we check for both classes and see if we can find a minimum SDK version.
int version = getAPIVersion(cls, m);
final int version2 = getAPIVersion(m.getDeclaringClass(), m);
if (version2 > 0 && version2 < version) {
version = version2;
}
if (version > sMaxSdkVersion) {
System.out.println("Skipping " + m.getDeclaringClass().getName() + "." + m.getName() +
", version " + version + " > " + sMaxSdkVersion);
continue;
}
// Sometimes (e.g. KeyEvent) a field can appear in both a class and a superclass. In
// that case we want to filter out the version that appears in the superclass, or
// we'll have bindings with duplicate names.
try {
if (m instanceof Field && !m.equals(cls.getField(m.getName()))) {
// m is a field in a superclass that has been hidden by
// a field with the same name in a subclass.
System.out.println("Skipping " + m.getName() +
" from " + m.getDeclaringClass());
continue;
}
} catch (final NoSuchFieldException e) {
}
list.add(m);
}
return list.toArray(new Member[list.size()]);
}
private static void generateClass(Class<?> clazz,
StringBuilder implementationFile,
StringBuilder headerFile) {
String generatedName = clazz.getSimpleName();
CodeGenerator generator = new CodeGenerator(new ClassWithOptions(clazz, generatedName));
generator.generateMembers(sortAndFilterMembers(clazz, clazz.getConstructors()));
generator.generateMembers(sortAndFilterMembers(clazz, clazz.getMethods()));
generator.generateMembers(sortAndFilterMembers(clazz, clazz.getFields()));
headerFile.append(generator.getHeaderFileContents());
implementationFile.append(generator.getWrapperFileContents());
}
private static Vector<String> getClassList(String path) {
Scanner scanner = null;
try {
scanner = new Scanner(new FileInputStream(path));
Vector lines = new Vector();
while (scanner.hasNextLine()) {
lines.add(scanner.nextLine());
}
return lines;
} catch (Exception e) {
System.out.println(e.toString());
return null;
} finally {
if (scanner != null) {
scanner.close();
}
}
}
private static void writeOutputFiles(String aOutputDir, String aPrefix, StringBuilder aHeaderFile,
StringBuilder aImplementationFile) {
FileOutputStream implStream = null;
try {
implStream = new FileOutputStream(new File(aOutputDir, aPrefix + ".cpp"));
implStream.write(aImplementationFile.toString().getBytes());
} catch (IOException e) {
System.err.println("Unable to write " + aOutputDir + ". Perhaps a permissions issue?");
e.printStackTrace(System.err);
} finally {
if (implStream != null) {
try {
implStream.close();
} catch (IOException e) {
System.err.println("Unable to close implStream due to "+e);
e.printStackTrace(System.err);
}
}
}
FileOutputStream headerStream = null;
try {
headerStream = new FileOutputStream(new File(aOutputDir, aPrefix + ".h"));
headerStream.write(aHeaderFile.toString().getBytes());
} catch (IOException e) {
System.err.println("Unable to write " + aOutputDir + ". Perhaps a permissions issue?");
e.printStackTrace(System.err);
} finally {
if (headerStream != null) {
try {
headerStream.close();
} catch (IOException e) {
System.err.println("Unable to close headerStream due to "+e);
e.printStackTrace(System.err);
}
}
}
}
}