org.objectweb.asm.MethodAdapter Java Examples

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Example #1
Source File: MaybeContinuableClassVisitor.java    From tascalate-javaflow with Apache License 2.0 4 votes vote down vote up 
@Override
public MethodVisitor visitMethod(int access, final String name, final String desc, String signature, String[] exceptions) {
    if (isAnnotation) {
        return null;
    }

    boolean isSynthetic = (access & Opcodes.ACC_SYNTHETIC) != 0;
    boolean isPackagePrivate = (access & (Opcodes.ACC_PRIVATE | Opcodes.ACC_PUBLIC | Opcodes.ACC_PROTECTED)) == 0;
    if (isSynthetic) {
        final boolean isAccessor = isPackagePrivate && name.startsWith("access$") && (access & Opcodes.ACC_STATIC) != 0;
        final boolean isBridge = (access & Opcodes.ACC_BRIDGE) != 0;
        if (isAccessor || isBridge) {
            return new MethodAdapter(NOP) {
                @Override
                public void visitMethodInsn(int opcode, String owner, String targetName, String targetDesc) {
                    if (selfclass.equals(owner)) {
                        if (isAccessor) {
                            actual2accessor.put(targetName + targetDesc, name + desc);
                        }
                        if (isBridge) {
                            bridge2specialization.put(name + desc, targetName + targetDesc);
                        }
                    }
                }
            };
        }
    }

    // If this method is desugared lambda body
    if ( isSynthetic && isPackagePrivate && name.startsWith("lambda$") ) {
        // RetroLambda desugars method body to package private
        desugaredLambdaBodies.add(name + desc);
        return null;
    }

    return new MethodAdapter(NOP) {

        private boolean methodContinuableAnnotationFound = false;

        @Override
        public AnnotationVisitor visitAnnotation(String description, boolean visible) {
            if (!methodContinuableAnnotationFound) {
                methodContinuableAnnotationFound = cciResolver.isContinuableAnnotation(description);
            }
            return null;
        }

        @Override 
        public void visitEnd() {
            if (methodContinuableAnnotationFound) {
                continuableMethods.add(name + desc);
            }
        }

    };
}