1.1 --- a/boot/src/main/java/org/apidesign/html/boot/impl/FnUtils.java Thu Oct 10 14:02:18 2013 +0200
1.2 +++ b/boot/src/main/java/org/apidesign/html/boot/impl/FnUtils.java Wed Nov 06 15:15:54 2013 +0100
1.3 @@ -20,6 +20,7 @@
1.4 */
1.5 package org.apidesign.html.boot.impl;
1.6
1.7 +import java.io.Closeable;
1.8 import java.io.InputStream;
1.9 import java.io.InputStreamReader;
1.10 import java.io.Reader;
1.11 @@ -28,23 +29,41 @@
1.12 import java.util.Collections;
1.13 import java.util.Enumeration;
1.14 import java.util.List;
1.15 +import java.util.concurrent.Callable;
1.16 import org.apidesign.html.boot.spi.Fn;
1.17 +import org.objectweb.asm.AnnotationVisitor;
1.18 +import org.objectweb.asm.ClassReader;
1.19 +import org.objectweb.asm.ClassVisitor;
1.20 +import org.objectweb.asm.ClassWriter;
1.21 +import org.objectweb.asm.Label;
1.22 +import org.objectweb.asm.MethodVisitor;
1.23 +import org.objectweb.asm.Opcodes;
1.24 +import org.objectweb.asm.Type;
1.25 +import org.objectweb.asm.signature.SignatureReader;
1.26 +import org.objectweb.asm.signature.SignatureVisitor;
1.27 +import org.objectweb.asm.signature.SignatureWriter;
1.28
1.29 /**
1.30 *
1.31 * @author Jaroslav Tulach <jtulach@netbeans.org>
1.32 */
1.33 -public final class FnUtils {
1.34 +public final class FnUtils implements Fn.Presenter {
1.35
1.36 private FnUtils() {
1.37 }
1.38
1.39 - public static Fn define(Class<?> caller, String code, String... names) {
1.40 - return FnContext.currentPresenter().defineFn(code, names);
1.41 - }
1.42 -
1.43 public static boolean isJavaScriptCapable(ClassLoader l) {
1.44 - return l instanceof JsClassLoader;
1.45 + if (l instanceof JsClassLoader) {
1.46 + return true;
1.47 + }
1.48 + Class<?> clazz;
1.49 + try (Closeable c = Fn.activate(new FnUtils())) {
1.50 + clazz = Class.forName(Test.class.getName(), true, l);
1.51 + final Object is = ((Callable<?>)clazz.newInstance()).call();
1.52 + return Boolean.TRUE.equals(is);
1.53 + } catch (Exception ex) {
1.54 + return false;
1.55 + }
1.56 }
1.57
1.58 public static boolean isValid(Fn fn) {
1.59 @@ -100,7 +119,7 @@
1.60 }.parse(body);
1.61 }
1.62
1.63 - static void loadScript(JsClassLoader jcl, String resource) {
1.64 + static void loadScript(ClassLoader jcl, String resource) {
1.65 final InputStream script = jcl.getResourceAsStream(resource);
1.66 if (script == null) {
1.67 throw new NullPointerException("Can't find " + resource);
1.68 @@ -109,7 +128,7 @@
1.69 Reader isr = null;
1.70 try {
1.71 isr = new InputStreamReader(script, "UTF-8");
1.72 - jcl.loadScript(isr);
1.73 + FnContext.currentPresenter().loadScript(isr);
1.74 } finally {
1.75 if (isr != null) {
1.76 isr.close();
1.77 @@ -119,4 +138,429 @@
1.78 throw new IllegalStateException("Can't execute " + resource, ex);
1.79 }
1.80 }
1.81 +
1.82 + @Override
1.83 + public Fn defineFn(String code, String... names) {
1.84 + return new TrueFn();
1.85 + }
1.86 +
1.87 + @Override
1.88 + public void displayPage(URL page, Runnable onPageLoad) {
1.89 + }
1.90 +
1.91 + @Override
1.92 + public void loadScript(Reader code) throws Exception {
1.93 + }
1.94 +
1.95 + private static final class FindInClass extends ClassVisitor {
1.96 + private String name;
1.97 + private int found;
1.98 + private ClassLoader loader;
1.99 +
1.100 + public FindInClass(ClassLoader l, ClassVisitor cv) {
1.101 + super(Opcodes.ASM4, cv);
1.102 + this.loader = l;
1.103 + }
1.104 +
1.105 + @Override
1.106 + public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
1.107 + this.name = name;
1.108 + super.visit(version, access, name, signature, superName, interfaces);
1.109 + }
1.110 +
1.111 + @Override
1.112 + public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
1.113 + if ("Lnet/java/html/js/JavaScriptResource;".equals(desc)) {
1.114 + return new LoadResource();
1.115 + }
1.116 + return super.visitAnnotation(desc, visible);
1.117 + }
1.118 +
1.119 + @Override
1.120 + public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
1.121 + return new FindInMethod(access, name, desc,
1.122 + super.visitMethod(access & (~Opcodes.ACC_NATIVE), name, desc, signature, exceptions)
1.123 + );
1.124 + }
1.125 +
1.126 + private final class FindInMethod extends MethodVisitor {
1.127 +
1.128 + private final String name;
1.129 + private final String desc;
1.130 + private final int access;
1.131 + private List<String> args;
1.132 + private String body;
1.133 + private boolean bodyGenerated;
1.134 +
1.135 + public FindInMethod(int access, String name, String desc, MethodVisitor mv) {
1.136 + super(Opcodes.ASM4, mv);
1.137 + this.access = access;
1.138 + this.name = name;
1.139 + this.desc = desc;
1.140 + }
1.141 +
1.142 + @Override
1.143 + public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
1.144 + if ("Lnet/java/html/js/JavaScriptBody;".equals(desc) // NOI18N
1.145 + || "Lorg/apidesign/bck2brwsr/core/JavaScriptBody;".equals(desc) // NOI18N
1.146 + ) {
1.147 + found++;
1.148 + return new FindInAnno();
1.149 + }
1.150 + return super.visitAnnotation(desc, visible);
1.151 + }
1.152 +
1.153 + private void generateJSBody(List<String> args, String body) {
1.154 + this.args = args;
1.155 + this.body = body;
1.156 + }
1.157 +
1.158 + @Override
1.159 + public void visitCode() {
1.160 + if (body == null) {
1.161 + return;
1.162 + }
1.163 + generateBody();
1.164 + }
1.165 +
1.166 + private boolean generateBody() {
1.167 + if (bodyGenerated) {
1.168 + return false;
1.169 + }
1.170 + bodyGenerated = true;
1.171 +
1.172 + super.visitFieldInsn(
1.173 + Opcodes.GETSTATIC, FindInClass.this.name,
1.174 + "$$fn$$" + name + "_" + found,
1.175 + "Lorg/apidesign/html/boot/spi/Fn;"
1.176 + );
1.177 + super.visitInsn(Opcodes.DUP);
1.178 + super.visitMethodInsn(
1.179 + Opcodes.INVOKESTATIC,
1.180 + "org/apidesign/html/boot/spi/Fn", "isValid",
1.181 + "(Lorg/apidesign/html/boot/spi/Fn;)Z"
1.182 + );
1.183 + Label ifNotNull = new Label();
1.184 + super.visitJumpInsn(Opcodes.IFNE, ifNotNull);
1.185 +
1.186 + // init Fn
1.187 + super.visitInsn(Opcodes.POP);
1.188 + super.visitLdcInsn(Type.getObjectType(FindInClass.this.name));
1.189 + super.visitLdcInsn(body);
1.190 + super.visitIntInsn(Opcodes.SIPUSH, args.size());
1.191 + super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/String");
1.192 + boolean needsVM = false;
1.193 + for (int i = 0; i < args.size(); i++) {
1.194 + assert !needsVM;
1.195 + String argName = args.get(i);
1.196 + needsVM = "vm".equals(argName);
1.197 + super.visitInsn(Opcodes.DUP);
1.198 + super.visitIntInsn(Opcodes.BIPUSH, i);
1.199 + super.visitLdcInsn(argName);
1.200 + super.visitInsn(Opcodes.AASTORE);
1.201 + }
1.202 + super.visitMethodInsn(Opcodes.INVOKESTATIC,
1.203 + "org/apidesign/html/boot/spi/Fn", "define",
1.204 + "(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/String;)Lorg/apidesign/html/boot/spi/Fn;"
1.205 + );
1.206 + super.visitInsn(Opcodes.DUP);
1.207 + super.visitFieldInsn(
1.208 + Opcodes.PUTSTATIC, FindInClass.this.name,
1.209 + "$$fn$$" + name + "_" + found,
1.210 + "Lorg/apidesign/html/boot/spi/Fn;"
1.211 + );
1.212 + // end of Fn init
1.213 +
1.214 + super.visitLabel(ifNotNull);
1.215 +
1.216 + final int offset;
1.217 + if ((access & Opcodes.ACC_STATIC) == 0) {
1.218 + offset = 1;
1.219 + super.visitIntInsn(Opcodes.ALOAD, 0);
1.220 + } else {
1.221 + offset = 0;
1.222 + super.visitInsn(Opcodes.ACONST_NULL);
1.223 + }
1.224 +
1.225 + super.visitIntInsn(Opcodes.SIPUSH, args.size());
1.226 + super.visitTypeInsn(Opcodes.ANEWARRAY, "java/lang/Object");
1.227 +
1.228 + class SV extends SignatureVisitor {
1.229 +
1.230 + private boolean nowReturn;
1.231 + private Type returnType;
1.232 + private int index;
1.233 + private int loadIndex = offset;
1.234 +
1.235 + public SV() {
1.236 + super(Opcodes.ASM4);
1.237 + }
1.238 +
1.239 + @Override
1.240 + public void visitBaseType(char descriptor) {
1.241 + final Type t = Type.getType("" + descriptor);
1.242 + if (nowReturn) {
1.243 + returnType = t;
1.244 + return;
1.245 + }
1.246 + FindInMethod.super.visitInsn(Opcodes.DUP);
1.247 + FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index++);
1.248 + FindInMethod.super.visitVarInsn(t.getOpcode(Opcodes.ILOAD), loadIndex++);
1.249 + String factory;
1.250 + switch (descriptor) {
1.251 + case 'I':
1.252 + factory = "java/lang/Integer";
1.253 + break;
1.254 + case 'J':
1.255 + factory = "java/lang/Long";
1.256 + loadIndex++;
1.257 + break;
1.258 + case 'S':
1.259 + factory = "java/lang/Short";
1.260 + break;
1.261 + case 'F':
1.262 + factory = "java/lang/Float";
1.263 + break;
1.264 + case 'D':
1.265 + factory = "java/lang/Double";
1.266 + loadIndex++;
1.267 + break;
1.268 + case 'Z':
1.269 + factory = "java/lang/Boolean";
1.270 + break;
1.271 + case 'C':
1.272 + factory = "java/lang/Character";
1.273 + break;
1.274 + case 'B':
1.275 + factory = "java/lang/Byte";
1.276 + break;
1.277 + default:
1.278 + throw new IllegalStateException(t.toString());
1.279 + }
1.280 + FindInMethod.super.visitMethodInsn(Opcodes.INVOKESTATIC,
1.281 + factory, "valueOf", "(" + descriptor + ")L" + factory + ";"
1.282 + );
1.283 + FindInMethod.super.visitInsn(Opcodes.AASTORE);
1.284 + }
1.285 +
1.286 + @Override
1.287 + public SignatureVisitor visitArrayType() {
1.288 + if (nowReturn) {
1.289 + throw new IllegalStateException("Not supported yet");
1.290 + }
1.291 + loadObject();
1.292 + return new SignatureWriter();
1.293 + }
1.294 +
1.295 + @Override
1.296 + public void visitClassType(String name) {
1.297 + if (nowReturn) {
1.298 + returnType = Type.getObjectType(name);
1.299 + return;
1.300 + }
1.301 + loadObject();
1.302 + }
1.303 +
1.304 + @Override
1.305 + public SignatureVisitor visitReturnType() {
1.306 + nowReturn = true;
1.307 + return this;
1.308 + }
1.309 +
1.310 + private void loadObject() {
1.311 + FindInMethod.super.visitInsn(Opcodes.DUP);
1.312 + FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, index++);
1.313 + FindInMethod.super.visitVarInsn(Opcodes.ALOAD, loadIndex++);
1.314 + FindInMethod.super.visitInsn(Opcodes.AASTORE);
1.315 + }
1.316 +
1.317 + }
1.318 + SV sv = new SV();
1.319 + SignatureReader sr = new SignatureReader(desc);
1.320 + sr.accept(sv);
1.321 +
1.322 + if (needsVM) {
1.323 + FindInMethod.super.visitInsn(Opcodes.DUP);
1.324 + FindInMethod.super.visitIntInsn(Opcodes.SIPUSH, sv.index);
1.325 + int lastSlash = FindInClass.this.name.lastIndexOf('/');
1.326 + String jsCallbacks = FindInClass.this.name.substring(0, lastSlash + 1) + "$JsCallbacks$";
1.327 + FindInMethod.super.visitFieldInsn(Opcodes.GETSTATIC, jsCallbacks, "VM", "L" + jsCallbacks + ";");
1.328 + FindInMethod.super.visitMethodInsn(Opcodes.INVOKEVIRTUAL, jsCallbacks, "current", "()L" + jsCallbacks + ";");
1.329 + FindInMethod.super.visitInsn(Opcodes.AASTORE);
1.330 + }
1.331 +
1.332 + super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
1.333 + "org/apidesign/html/boot/spi/Fn", "invoke", "(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;"
1.334 + );
1.335 + switch (sv.returnType.getSort()) {
1.336 + case Type.VOID:
1.337 + super.visitInsn(Opcodes.RETURN);
1.338 + break;
1.339 + case Type.ARRAY:
1.340 + case Type.OBJECT:
1.341 + super.visitTypeInsn(Opcodes.CHECKCAST, sv.returnType.getInternalName());
1.342 + super.visitInsn(Opcodes.ARETURN);
1.343 + break;
1.344 + case Type.BOOLEAN:
1.345 + super.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
1.346 + super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
1.347 + "java/lang/Boolean", "booleanValue", "()Z"
1.348 + );
1.349 + super.visitInsn(Opcodes.IRETURN);
1.350 + break;
1.351 + default:
1.352 + super.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Number");
1.353 + super.visitMethodInsn(Opcodes.INVOKEVIRTUAL,
1.354 + "java/lang/Number", sv.returnType.getClassName() + "Value", "()" + sv.returnType.getDescriptor()
1.355 + );
1.356 + super.visitInsn(sv.returnType.getOpcode(Opcodes.IRETURN));
1.357 + }
1.358 + return true;
1.359 + }
1.360 +
1.361 + @Override
1.362 + public void visitEnd() {
1.363 + super.visitEnd();
1.364 + if (body != null) {
1.365 + if (generateBody()) {
1.366 + // native method
1.367 + super.visitMaxs(1, 0);
1.368 + }
1.369 + FindInClass.this.visitField(
1.370 + Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC,
1.371 + "$$fn$$" + name + "_" + found,
1.372 + "Lorg/apidesign/html/boot/spi/Fn;",
1.373 + null, null
1.374 + );
1.375 + }
1.376 + }
1.377 +
1.378 + private final class FindInAnno extends AnnotationVisitor {
1.379 +
1.380 + private List<String> args = new ArrayList<String>();
1.381 + private String body;
1.382 + private boolean javacall = false;
1.383 +
1.384 + public FindInAnno() {
1.385 + super(Opcodes.ASM4);
1.386 + }
1.387 +
1.388 + @Override
1.389 + public void visit(String name, Object value) {
1.390 + if (name == null) {
1.391 + args.add((String) value);
1.392 + return;
1.393 + }
1.394 + if (name.equals("javacall")) { // NOI18N
1.395 + javacall = (Boolean) value;
1.396 + return;
1.397 + }
1.398 + assert name.equals("body");
1.399 + body = (String) value;
1.400 + }
1.401 +
1.402 + @Override
1.403 + public AnnotationVisitor visitArray(String name) {
1.404 + return this;
1.405 + }
1.406 +
1.407 + @Override
1.408 + public void visitEnd() {
1.409 + if (body != null) {
1.410 + if (javacall) {
1.411 + body = callback(body);
1.412 + args.add("vm");
1.413 + }
1.414 + generateJSBody(args, body);
1.415 + }
1.416 + }
1.417 + }
1.418 + }
1.419 +
1.420 + private final class LoadResource extends AnnotationVisitor {
1.421 +
1.422 + public LoadResource() {
1.423 + super(Opcodes.ASM4);
1.424 + }
1.425 +
1.426 + @Override
1.427 + public void visit(String attrName, Object value) {
1.428 + String relPath = (String) value;
1.429 + if (relPath.startsWith("/")) {
1.430 + loadScript(loader, relPath);
1.431 + } else {
1.432 + int last = name.lastIndexOf('/');
1.433 + String fullPath = name.substring(0, last + 1) + relPath;
1.434 + loadScript(loader, fullPath);
1.435 + }
1.436 + }
1.437 + }
1.438 + }
1.439 +
1.440 + private static class ClassWriterEx extends ClassWriter {
1.441 +
1.442 + private ClassLoader loader;
1.443 +
1.444 + public ClassWriterEx(ClassLoader l, ClassReader classReader, int flags) {
1.445 + super(classReader, flags);
1.446 + this.loader = l;
1.447 + }
1.448 +
1.449 + @Override
1.450 + protected String getCommonSuperClass(final String type1, final String type2) {
1.451 + Class<?> c, d;
1.452 + try {
1.453 + c = Class.forName(type1.replace('/', '.'), false, loader);
1.454 + d = Class.forName(type2.replace('/', '.'), false, loader);
1.455 + } catch (Exception e) {
1.456 + throw new RuntimeException(e.toString());
1.457 + }
1.458 + if (c.isAssignableFrom(d)) {
1.459 + return type1;
1.460 + }
1.461 + if (d.isAssignableFrom(c)) {
1.462 + return type2;
1.463 + }
1.464 + if (c.isInterface() || d.isInterface()) {
1.465 + return "java/lang/Object";
1.466 + } else {
1.467 + do {
1.468 + c = c.getSuperclass();
1.469 + } while (!c.isAssignableFrom(d));
1.470 + return c.getName().replace('.', '/');
1.471 + }
1.472 + }
1.473 + }
1.474 +
1.475 + static byte[] transform(ClassLoader loader, byte[] arr) {
1.476 + ClassReader cr = new ClassReader(arr) {
1.477 + // to allow us to compile with -profile compact1 on
1.478 + // JDK8 while processing the class as JDK7, the highest
1.479 + // class format asm 4.1 understands to
1.480 + @Override
1.481 + public short readShort(int index) {
1.482 + short s = super.readShort(index);
1.483 + if (index == 6 && s > Opcodes.V1_7) {
1.484 + return Opcodes.V1_7;
1.485 + }
1.486 + return s;
1.487 + }
1.488 + };
1.489 + FindInClass tst = new FindInClass(loader, null);
1.490 + cr.accept(tst, 0);
1.491 + if (tst.found > 0) {
1.492 + ClassWriter w = new ClassWriterEx(loader, cr, ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
1.493 + FindInClass fic = new FindInClass(loader, w);
1.494 + cr.accept(fic, 0);
1.495 + arr = w.toByteArray();
1.496 + }
1.497 + return arr;
1.498 + }
1.499 +
1.500 + private static final class TrueFn extends Fn {
1.501 + @Override
1.502 + public Object invoke(Object thiz, Object... args) throws Exception {
1.503 + return Boolean.TRUE;
1.504 + }
1.505 + } // end of TrueFn
1.506 }