Example usage for org.objectweb.asm Opcodes ACC

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ACC_PUBLIC.

Prototype

int ACC_PUBLIC

To view the source code for org.objectweb.asm Opcodes ACC_PUBLIC.

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Usage

From source file:com.google.gwt.dev.shell.rewrite.RewriteSingleJsoImplDispatches.java

License:Apache License

/**
 * For regular Java objects that implement a SingleJsoImpl interface, write
 * instance trampoline dispatchers for mangled method names to the
 * implementing method./*  ww w.  j a  v  a 2 s .  com*/
 */
private void writeTrampoline(String stubIntr) {
    /*
     * This is almost the same kind of trampoline as the ones generated in
     * WriteJsoImpl, however there are enough small differences between the
     * semantics of the dispatches that would make a common implementation far
     * more awkward than the duplication of code.
     */
    for (String mangledName : toImplement(stubIntr)) {
        for (Method method : jsoData.getDeclarations(mangledName)) {

            Method toCall = new Method(method.getName(), method.getDescriptor());

            // Must not be final
            MethodVisitor mv = super.visitMethod(Opcodes.ACC_PUBLIC | Opcodes.ACC_SYNTHETIC, mangledName,
                    method.getDescriptor(), null, null);
            if (mv != null) {
                mv.visitCode();

                /*
                 * It just so happens that the stack and local variable sizes are the
                 * same, but they're kept distinct to aid in clarity should the
                 * dispatch logic change.
                 *
                 * These start at 1 because we need to load "this" onto the stack
                 */
                int var = 1;
                int size = 1;

                // load this
                mv.visitVarInsn(Opcodes.ALOAD, 0);

                // then the rest of the arguments
                for (Type t : toCall.getArgumentTypes()) {
                    size += t.getSize();
                    mv.visitVarInsn(t.getOpcode(Opcodes.ILOAD), var);
                    var += t.getSize();
                }

                // Make sure there's enough room for the return value
                size = Math.max(size, toCall.getReturnType().getSize());

                mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, currentTypeName, toCall.getName(),
                        toCall.getDescriptor(), false);
                mv.visitInsn(toCall.getReturnType().getOpcode(Opcodes.IRETURN));
                mv.visitMaxs(size, var);
                mv.visitEnd();
            }
        }
    }
}

From source file:com.google.gwt.dev.shell.rewrite.WriteJsoImpl.java

License:Apache License

/**
 * Records the original name and resets access opcodes.
 *///  w  ww  . ja v  a 2 s .  co  m
@Override
public void visit(int version, int access, String name, String signature, String superName,
        String[] interfaces) {
    originalName = name;
    super.visit(version, Opcodes.ACC_PUBLIC | Opcodes.ACC_STATIC | Opcodes.ACC_SYNTHETIC, name + '$', signature,
            superName, interfaces);
}

From source file:com.google.singletondetector.visitors.SingletonClassVisitor.java

License:Apache License

@Override
public FieldVisitor visitField(int access, String name, String desc, String signature, Object value) {
    if ((access & Opcodes.ACC_STATIC) == Opcodes.ACC_STATIC) {
        if ((access & Opcodes.ACC_PUBLIC) == Opcodes.ACC_PUBLIC) {
            sd.visitStaticField(name, desc);
        }//  w  ww. j ava 2s.  c om

        if ((access & Opcodes.ACC_PRIVATE) == Opcodes.ACC_PRIVATE
                && (access & Opcodes.ACC_FINAL) != Opcodes.ACC_FINAL) {
            sd.addStaticField(name, desc);
        }
    }
    return null;
}

From source file:com.google.singletondetector.visitors.SingletonClassVisitor.java

License:Apache License

@Override
public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
    if (((access & Opcodes.ACC_STATIC) == Opcodes.ACC_STATIC
            && (access & Opcodes.ACC_PUBLIC) == Opcodes.ACC_PUBLIC)) {
        sd.visitStaticMethod(name, desc);
    }//  w w w . j  av a2 s .c om

    return super.visitMethod(access, name, desc, signature, exceptions);
}

From source file:com.google.template.soy.jbcsrc.AnnotationRefTest.java

License:Apache License

@SuppressWarnings("unchecked")
private static <T extends Annotation> Class<?> createClassWithAnnotation(T ann) {
    TypeInfo generatedType = TypeInfo.create(AnnotationRefTest.class.getPackage().getName() + ".Tmp");
    SoyClassWriter cw = SoyClassWriter.builder(generatedType)
            .setAccess(Opcodes.ACC_FINAL | Opcodes.ACC_SUPER | Opcodes.ACC_PUBLIC).build();
    AnnotationRef.forType((Class<T>) ann.annotationType()).write(ann, cw);
    cw.visitEnd();//from  w  w w .  j  a  va2  s. c o m
    ClassData cd = cw.toClassData();
    try {
        return new MemoryClassLoader(ImmutableList.of(cd)).loadClass(cd.type().className());
    } catch (ClassNotFoundException e) {
        throw new RuntimeException(e); // this should be impossible
    }
}

From source file:com.google.template.soy.jbcsrc.BytecodeProducerTest.java

License:Apache License

public void testGenDoesntOverlapWithCompile() {
    BytecodeProducer producer = new BytecodeProducer() {
        @Override/* ww  w. ja  v  a 2 s . c  o m*/
        void doGen(CodeBuilder adapter) {
            BytecodeUtils.constant('c').gen(adapter);
        }
    };
    try {
        CodeBuilder adaterAdapter = new CodeBuilder(Opcodes.ACC_PUBLIC, BytecodeUtils.NULLARY_INIT,
                new MethodNode());
        producer.gen(adaterAdapter);
        fail();
    } catch (IllegalStateException e) {
        assertThat(e)
                .hasMessage("All bytecode producers should be created prior to code generation beginning.");
    }
}

From source file:com.google.template.soy.jbcsrc.BytecodeUtils.java

License:Apache License

/**
 * Generates a default nullary public constructor for the given type on the {@link ClassVisitor}.
 * //from   w ww .  j a  v  a2s. c  o m
 * <p>For java classes this is normally generated by the compiler and looks like: <pre>{@code    
 *   public Foo() {
 *     super();
 *   }}</pre>
 */
static void defineDefaultConstructor(ClassVisitor cv, TypeInfo ownerType) {
    CodeBuilder mg = new CodeBuilder(Opcodes.ACC_PUBLIC, NULLARY_INIT, null, cv);
    mg.visitCode();
    Label start = mg.mark();
    Label end = mg.newLabel();
    LocalVariable thisVar = LocalVariable.createThisVar(ownerType, start, end);
    thisVar.gen(mg);
    mg.invokeConstructor(OBJECT.type(), NULLARY_INIT);
    mg.returnValue();
    mg.mark(end);
    thisVar.tableEntry(mg);
    mg.endMethod();
}

From source file:com.google.template.soy.jbcsrc.ExpressionTester.java

License:Apache License

private static ClassData createClass(Class<? extends Invoker> targetInterface, Expression expr) {
    java.lang.reflect.Method invokeMethod;
    try {/*from  w ww.j  a v  a2s. c o  m*/
        invokeMethod = targetInterface.getMethod("invoke");
    } catch (NoSuchMethodException | SecurityException e) {
        throw new RuntimeException(e);
    }
    Class<?> returnType = invokeMethod.getReturnType();
    if (!Type.getType(returnType).equals(expr.resultType())) {
        if (!returnType.equals(Object.class) || expr.resultType().getSort() != Type.OBJECT) {
            throw new IllegalArgumentException(targetInterface + " is not appropriate for this expression");
        }
    }
    TypeInfo generatedType = TypeInfo.create(
            ExpressionTester.class.getPackage().getName() + "." + targetInterface.getSimpleName() + "Impl");
    SoyClassWriter cw = SoyClassWriter.builder(generatedType)
            .setAccess(Opcodes.ACC_FINAL | Opcodes.ACC_SUPER | Opcodes.ACC_PUBLIC)
            .implementing(TypeInfo.create(targetInterface)).build();
    BytecodeUtils.defineDefaultConstructor(cw, generatedType);
    Method invoke = Method.getMethod(invokeMethod);
    Statement.returnExpression(expr).writeMethod(Opcodes.ACC_PUBLIC, invoke, cw);

    Method voidInvoke;
    try {
        voidInvoke = Method.getMethod(Invoker.class.getMethod("voidInvoke"));
    } catch (NoSuchMethodException | SecurityException e) {
        throw new RuntimeException(e); // this method definitely exists
    }
    Statement.concat(LocalVariable.createThisVar(generatedType, new Label(), new Label())
            .invoke(MethodRef.create(invokeMethod)).toStatement(), new Statement() {
                @Override
                void doGen(CodeBuilder adapter) {
                    adapter.visitInsn(Opcodes.RETURN);
                }
            }).writeMethod(Opcodes.ACC_PUBLIC, voidInvoke, cw);
    ClassData data = cw.toClassData();
    checkClassData(data);
    return data;
}

From source file:com.google.template.soy.jbcsrc.restricted.BytecodeProducerTest.java

License:Apache License

@Test
public void testGenDoesntOverlapWithCompile() {
    BytecodeProducer producer = new BytecodeProducer() {
        @Override//from www  . j a v  a2s  .c o  m
        protected void doGen(CodeBuilder adapter) {
            BytecodeUtils.constant('c').gen(adapter);
        }
    };
    try {
        CodeBuilder adaterAdapter = new CodeBuilder(Opcodes.ACC_PUBLIC, BytecodeUtils.NULLARY_INIT,
                new MethodNode());
        producer.gen(adaterAdapter);
        fail();
    } catch (IllegalStateException e) {
        assertThat(e).hasMessageThat()
                .contains("All bytecode producers should be constructed prior to code generation");
    }
}

From source file:com.google.template.soy.jbcsrc.restricted.BytecodeUtils.java

License:Apache License

/**
 * Generates a default nullary public constructor for the given type on the {@link ClassVisitor}.
 *
 * <p>For java classes this is normally generated by the compiler and looks like:
 *
 * <pre>{@code//w  w w  . j a  v a  2s  .  c om
 * public Foo() {
 *   super();
 * }
 * }</pre>
 */
public static void defineDefaultConstructor(ClassVisitor cv, TypeInfo ownerType) {
    CodeBuilder mg = new CodeBuilder(Opcodes.ACC_PUBLIC, NULLARY_INIT, null, cv);
    mg.visitCode();
    Label start = mg.mark();
    Label end = mg.newLabel();
    LocalVariable thisVar = LocalVariable.createThisVar(ownerType, start, end);
    thisVar.gen(mg);
    mg.invokeConstructor(OBJECT.type(), NULLARY_INIT);
    mg.returnValue();
    mg.mark(end);
    thisVar.tableEntry(mg);
    mg.endMethod();
}

Example usage for org.objectweb.asm Opcodes ACC_PUBLIC

Introduction

Prototype

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