Examples with ClassVisitor org.objectweb.asm.ClassVisitor used on opensource projects

Example 11 with ClassVisitor

use of org.objectweb.asm.ClassVisitor in project byte-buddy by raphw.

the class AsmVisitorWrapperNoOpTest method testWrapperChain.

@Test
public void testWrapperChain() throws Exception {
    ClassVisitor classVisitor = mock(ClassVisitor.class);
    assertThat(AsmVisitorWrapper.NoOp.INSTANCE.wrap(mock(TypeDescription.class), classVisitor, mock(Implementation.Context.class), mock(TypePool.class), new FieldList.Empty<FieldDescription.InDefinedShape>(), new MethodList.Empty<MethodDescription>(), IGNORED, IGNORED), is(classVisitor));
    verifyZeroInteractions(classVisitor);
}

Example 12 with ClassVisitor

use of org.objectweb.asm.ClassVisitor in project byte-buddy by raphw.

the class TypeConstantAdjustmentTest method testInstrumentationModernClassFile.

@Test
public void testInstrumentationModernClassFile() throws Exception {
    ClassVisitor classVisitor = TypeConstantAdjustment.INSTANCE.wrap(mock(TypeDescription.class), this.classVisitor, mock(Implementation.Context.class), mock(TypePool.class), new FieldList.Empty<FieldDescription.InDefinedShape>(), new MethodList.Empty<MethodDescription>(), IGNORED, IGNORED);
    classVisitor.visit(ClassFileVersion.JAVA_V5.getMinorMajorVersion(), FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    assertThat(classVisitor.visitMethod(FOOBAR, FOO, BAR, QUX, new String[] { BAZ }), is(methodVisitor));
    verify(this.classVisitor).visit(ClassFileVersion.JAVA_V5.getMinorMajorVersion(), FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    verify(this.classVisitor).visitMethod(FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    verifyNoMoreInteractions(this.classVisitor);
    verifyZeroInteractions(methodVisitor);
}

Example 13 with ClassVisitor

use of org.objectweb.asm.ClassVisitor in project byte-buddy by raphw.

the class TypeConstantAdjustmentTest method testInstrumentationLegacyClassFileArrayType.

@Test
public void testInstrumentationLegacyClassFileArrayType() throws Exception {
    ClassVisitor classVisitor = TypeConstantAdjustment.INSTANCE.wrap(mock(TypeDescription.class), this.classVisitor, mock(Implementation.Context.class), mock(TypePool.class), new FieldList.Empty<FieldDescription.InDefinedShape>(), new MethodList.Empty<MethodDescription>(), IGNORED, IGNORED);
    classVisitor.visit(ClassFileVersion.JAVA_V4.getMinorMajorVersion(), FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    MethodVisitor methodVisitor = classVisitor.visitMethod(FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    assertThat(methodVisitor, not(this.methodVisitor));
    methodVisitor.visitLdcInsn(Type.getType(Object[].class));
    verify(this.classVisitor).visit(ClassFileVersion.JAVA_V4.getMinorMajorVersion(), FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    verify(this.classVisitor).visitMethod(FOOBAR, FOO, BAR, QUX, new String[] { BAZ });
    verifyNoMoreInteractions(this.classVisitor);
    verify(this.methodVisitor).visitLdcInsn(Type.getType(Object[].class).getInternalName().replace('/', '.'));
    verify(this.methodVisitor).visitMethodInsn(Opcodes.INVOKESTATIC, Type.getType(Class.class).getInternalName(), "forName", Type.getType(Class.class.getDeclaredMethod("forName", String.class)).getDescriptor(), false);
    verifyNoMoreInteractions(this.methodVisitor);
}

Example 14 with ClassVisitor

use of org.objectweb.asm.ClassVisitor in project lombok by rzwitserloot.

the class AsmUtil method fixJSRInlining.

static byte[] fixJSRInlining(byte[] byteCode) {
    ClassReader reader = new ClassReader(byteCode);
    ClassWriter writer = new FixedClassWriter(reader, 0);
    ClassVisitor visitor = new ClassVisitor(Opcodes.ASM5, writer) {

        @Override
        public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
            return new JSRInlinerAdapter(super.visitMethod(access, name, desc, signature, exceptions), access, name, desc, signature, exceptions);
        }
    };
    reader.accept(visitor, 0);
    return writer.toByteArray();
}

Example 15 with ClassVisitor

use of org.objectweb.asm.ClassVisitor in project platform_frameworks_base by android.

the class AsmGenerator method transform.

/**
     * Transforms a class.
     * <p/>
     * There are 3 kind of transformations:
     *
     * 1- For "mock" dependencies classes, we want to remove all code from methods and replace
     * by a stub. Native methods must be implemented with this stub too. Abstract methods are
     * left intact. Modified classes must be overridable (non-private, non-final).
     * Native methods must be made non-final, non-private.
     *
     * 2- For "keep" classes, we want to rewrite all native methods as indicated above.
     * If a class has native methods, it must also be made non-private, non-final.
     *
     * Note that unfortunately static methods cannot be changed to non-static (since static and
     * non-static are invoked differently.)
     */
byte[] transform(ClassReader cr, boolean stubNativesOnly) {
    boolean hasNativeMethods = hasNativeMethods(cr);
    // Get the class name, as an internal name (e.g. com/android/SomeClass$InnerClass)
    String className = cr.getClassName();
    String newName = transformName(className);
    // transformName returns its input argument if there's no need to rename the class
    if (!newName.equals(className)) {
        mRenameCount++;
        // This class is being renamed, so remove it from the list of classes not renamed.
        mClassesNotRenamed.remove(className);
    }
    mLog.debug("Transform %s%s%s%s", className, newName.equals(className) ? "" : " (renamed to " + newName + ")", hasNativeMethods ? " -- has natives" : "", stubNativesOnly ? " -- stub natives only" : "");
    // Rewrite the new class from scratch, without reusing the constant pool from the
    // original class reader.
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    ClassVisitor cv = cw;
    // FIXME Generify
    if ("android/content/res/Resources".equals(className)) {
        cv = new FieldInjectorAdapter(cv);
    }
    if (mReplaceMethodCallsClasses.contains(className)) {
        cv = new ReplaceMethodCallsAdapter(cv, className);
    }
    cv = new RefactorClassAdapter(cv, mRefactorClasses);
    if (!newName.equals(className)) {
        cv = new RenameClassAdapter(cv, className, newName);
    }
    String binaryNewName = newName.replace('/', '.');
    if (mInjectedMethodsMap.keySet().contains(binaryNewName)) {
        cv = new InjectMethodsAdapter(cv, mInjectedMethodsMap.get(binaryNewName));
    }
    cv = new TransformClassAdapter(mLog, mStubMethods, mDeleteReturns.get(className), newName, cv, stubNativesOnly);
    Set<String> delegateMethods = mDelegateMethods.get(className);
    if (delegateMethods != null && !delegateMethods.isEmpty()) {
        // known to have no native methods, just skip this step.
        if (hasNativeMethods || !(delegateMethods.size() == 1 && delegateMethods.contains(DelegateClassAdapter.ALL_NATIVES))) {
            cv = new DelegateClassAdapter(mLog, cv, className, delegateMethods);
        }
    }
    Set<String> promoteFields = mPromotedFields.get(className);
    if (promoteFields != null && !promoteFields.isEmpty()) {
        cv = new PromoteFieldClassAdapter(cv, promoteFields);
    }
    cr.accept(cv, 0);
    return cw.toByteArray();
}