[wip] get handle from global, and create handle from int

src/ast/src/bundle.rs

 use ir::*;
 use ptr::*;
 use types::*;
-use utils::Address;
 
 use std::collections::HashMap;
 
@@ -35,121 +34,4 @@ impl MuBundle {
 //            name_id_map: HashMap::new()
         }
     }
-}
-
-#[derive(Copy, Clone, Debug)]
-pub struct APIHandleKey {
-    pub id: MuID,
-    pub v: APIHandleKeyKind
-} 
-
-#[derive(Copy, Clone, Debug)]
-pub enum APIHandleKeyKind {
-    Int,
-    Float,
-    Double,
-    UPtr,
-    UFP,
-    
-    // SeqValue
-    Struct,
-    Array,
-    Vector,
-    
-    // GenRef
-    Ref,
-    IRef,
-    TagRef64,
-    FuncRef,
-    ThreadRef,
-    StackRef,
-    FCRef, // frame cursor ref        
-    
-    // GenRef->IR
-    Bundle,
-    
-    // GenRef->IR->Child
-    Type,
-    FuncSig,
-    FuncVer,
-    BB,
-    Inst,
-    
-    // GenRef->IR->Child->Var->Global
-    Const,
-    Global,
-    Func,
-    ExpFunc,
-    
-    // GenRef->IR->Child->Var->Local
-    NorParam,
-    ExcParam,
-    InstRes,    
-}
-
-macro_rules! handle_constructor {
-    ($fn_name: ident, $kind: ident) => {
-        pub fn $fn_name(id: MuID) -> APIHandleKey {
-            APIHandleKey{
-                id: id, v: APIHandleKeyKind::$kind
-            }
-        }
-    }
-}
-
-handle_constructor!(handle_int, Int);
-handle_constructor!(handle_float, Float);
-handle_constructor!(handle_double, Double);
-handle_constructor!(handle_uptr, UPtr);
-handle_constructor!(handle_ufp, UFP);
-
-handle_constructor!(handle_struct, Struct);
-handle_constructor!(handle_array, Array);
-handle_constructor!(handle_vector, Vector);
-
-handle_constructor!(handle_ref, Ref);
-handle_constructor!(handle_iref, IRef);
-handle_constructor!(handle_tagref64, TagRef64);
-handle_constructor!(handle_funcref, FuncRef);
-handle_constructor!(handle_threadref, ThreadRef);
-handle_constructor!(handle_stackref, StackRef);
-handle_constructor!(handle_fcref, FCRef);
-
-handle_constructor!(handle_bundle, Bundle);
-
-handle_constructor!(handle_type, Type);
-handle_constructor!(handle_funcsig, FuncSig);
-handle_constructor!(handle_funcver, FuncVer);
-handle_constructor!(handle_bb, BB);
-handle_constructor!(handle_inst, Inst);
-
-handle_constructor!(handle_const, Const);
-handle_constructor!(handle_global, Global);
-handle_constructor!(handle_func, Func);
-handle_constructor!(handle_expfunc, ExpFunc);
-
-handle_constructor!(handle_norparam, NorParam);
-handle_constructor!(handle_excparam, ExcParam);
-handle_constructor!(handle_instres, InstRes);
-
-#[derive(Clone)]
-pub enum APIHandleValue {
-    Int(u64),
-    Float(f32),
-    Double(f64),
-    UPtr(Address),
-    UFP(Address),
-
-    Struct(Vec<APIHandleValue>),
-    Array(Vec<APIHandleValue>),
-    Vector(Vec<APIHandleValue>),
-
-    Ref(Address),
-    IRef(Address),
-    TagRef64(u64),
-    FuncRef(MuID),
-    ThreadRef,
-    StackRef,
-    FCRef,
-    IBRef
 }
\ No newline at end of file

src/ast/src/inst.rs

@@ -488,4 +488,4 @@ impl DestArg {
             &DestArg::Freshbound(n) => format!("${}", n)
         }
     }
-}
\ No newline at end of file
+}

src/ast/src/lib.rs

@@ -42,4 +42,4 @@ pub mod inst;
 pub mod types;
 pub mod ir_semantics;
 pub mod ptr;
-pub mod op;
\ No newline at end of file
+pub mod op;

src/ast/src/ptr.rs

@@ -104,4 +104,4 @@ pub fn P<T>(value: T) -> P<T> {
 //    fn encode<S: Encoder> (&self, s: &mut S) -> Result<(), S::Error> {
 //        s.emit_usize(self.id())
 //    }
-//}
\ No newline at end of file
+//}

src/compiler/backend/arch/x86_64/asm_backend.rs

@@ -2898,4 +2898,4 @@ pub fn spill_rewrite(
     cf.mc().trace_mc();
 
     new_nodes
-}
\ No newline at end of file
+}

src/compiler/backend/arch/x86_64/codegen.rs

@@ -184,4 +184,4 @@ pub trait CodeGenerator {
     // fp conversion
     fn emit_cvtsi2sd_f64_r  (&mut self, dest: Reg, src: Reg);
     fn emit_cvtsd2si_r_f64  (&mut self, dest: Reg, src: Reg);
-}
\ No newline at end of file
+}

src/compiler/backend/arch/x86_64/mod.rs

@@ -518,4 +518,4 @@ pub fn estimate_insts_for_ir(inst: &Instruction) -> usize {
         Move(_) => 0,
         ExnInstruction{ref inner, ..} => estimate_insts_for_ir(&inner)
     }
-}
\ No newline at end of file
+}

src/compiler/backend/mod.rs

@@ -306,4 +306,4 @@ impl RegGroup {
             _ => unimplemented!()
         }
     }
-}
\ No newline at end of file
+}

src/compiler/backend/reg_alloc/mod.rs

 pub mod graph_coloring;
 
-pub use compiler::backend::reg_alloc::graph_coloring::RegisterAllocation;
\ No newline at end of file
+pub use compiler::backend::reg_alloc::graph_coloring::RegisterAllocation;

src/compiler/frame.rs

@@ -127,4 +127,4 @@ impl FrameSlot {
             )
         })
     }
-}
\ No newline at end of file
+}

src/compiler/machine_code.rs

@@ -144,4 +144,4 @@ pub trait MachineCode {
 
 pub trait MachineInst {
 
-}
\ No newline at end of file
+}

src/compiler/mod.rs

@@ -82,4 +82,4 @@ impl Default for CompilerPolicy {
 
         CompilerPolicy{passes: passes}
     }
-}
\ No newline at end of file
+}

src/compiler/passes/gen_mov_phi.rs

@@ -272,4 +272,4 @@ fn process_dest(dest: Destination, blocks_to_insert: &mut Vec<IntermediateBlockI
 
         dest
     }
-}
\ No newline at end of file
+}

src/compiler/passes/inlining.rs

@@ -464,4 +464,4 @@ impl CompilerPass for Inlining {
             debug!("after inlining: {:?}", func);
         }
     }
-}
\ No newline at end of file
+}

src/gc/src/common/address_bitmap.rs

@@ -71,4 +71,4 @@ impl AddressBitmap {
     pub fn print(&self) {
         self.bitmap.print();
     }
-}
\ No newline at end of file
+}

src/gc/src/common/address_map.rs

@@ -41,4 +41,4 @@ impl <T> AddressMap<T> where T: Copy{
         let index = (addr.diff(self.start) >> LOG_POINTER_SIZE) as isize;
         unsafe {*self.ptr.offset(index)}
     }
-}
\ No newline at end of file
+}

src/gc/src/common/bitmap.rs

@@ -145,4 +145,4 @@ mod test {
         assert_eq!(bitmap.length_until_next_bit(5), 1);
         assert_eq!(bitmap.length_until_next_bit(6), 0);
     }
-}
\ No newline at end of file
+}

src/gc/src/common/gctype.rs

@@ -174,4 +174,4 @@ mod tests {
         assert_eq!(vec[1].gen_ref_offsets(), vec![0, 16, 32, 48, 64, 80, 96, 112, 128, 144]);
         assert_eq!(vec[2].gen_ref_offsets(), (0..100).map(|x| x * 16).collect::<Vec<ByteSize>>());
     }
-}
\ No newline at end of file
+}

src/gc/src/common/mod.rs

@@ -4,4 +4,4 @@ mod address_map;
 pub mod gctype;
 
 pub use self::address_bitmap::AddressBitmap;
-pub use self::address_map::AddressMap;
\ No newline at end of file
+pub use self::address_map::AddressMap;

src/gc/src/heap/freelist/malloc_list.rs

@@ -124,4 +124,4 @@ impl fmt::Display for FreeListNode {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "FreeListNode#{}(start={:#X}, size={}, state={:?})", self.id, self.start, self.size, self.mark)
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/freelist/mod.rs

@@ -22,4 +22,4 @@ pub fn alloc_large(size: usize, align: usize, mutator: &mut immix::ImmixMutatorL
             return ret_addr;
         }
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/freelist/treadmill.rs

@@ -362,4 +362,4 @@ mod tests {
             println!("Allocation{}: {}", i, ret);
         }
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/gc/mod.rs

@@ -567,4 +567,4 @@ pub fn steal_process_edge(base: Address, offset: usize, local_queue:&mut Vec<Obj
             }
         }
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/immix/immix_mutator.rs

@@ -344,4 +344,4 @@ impl fmt::Display for ImmixMutatorLocal {
             write!(f, "block = {}", self.block.as_ref().unwrap())
         }
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/immix/immix_space.rs

@@ -440,4 +440,4 @@ impl fmt::Debug for ImmixBlock {
         }
         write!(f, "]")
     }
-}
\ No newline at end of file
+}

src/gc/src/heap/immix/mod.rs

@@ -36,4 +36,4 @@ pub enum LineMark {
 pub enum BlockMark {
     Usable,
     Full
-}
\ No newline at end of file
+}

src/gc/src/heap/mod.rs

@@ -87,4 +87,4 @@ pub trait Space {
 pub fn fill_alignment_gap(start : Address, end : Address) -> () {
     debug_assert!(end >= start);
     start.memset(ALIGNMENT_VALUE, end.diff(start));
-}
\ No newline at end of file
+}

src/gc/src/lib.rs

@@ -208,4 +208,4 @@ pub extern fn muentry_alloc_large(mutator: *mut ImmixMutatorLocal, size: usize,
 #[no_mangle]
 pub extern fn force_gc() {
     heap::gc::trigger_gc();
-}
\ No newline at end of file
+}

src/gc/src/objectmodel/header.rs

@@ -393,4 +393,4 @@ mod tests {
         assert_eq!(header_get_hybrid_length(encode), 10);
         assert_eq!(header_get_gctype_id(encode), 2);
     }
-}
\ No newline at end of file
+}

src/gc/src/objectmodel/sidemap.rs

@@ -96,4 +96,4 @@ pub const SHORT_ENCODE_BIT : usize = 7;
 #[inline(always)]
 pub fn get_ref_byte(alloc_map:*mut u8, space_start: Address, obj: ObjectReference) -> u8 {
     unsafe {*alloc_map.offset((obj.to_address().diff(space_start) >> LOG_POINTER_SIZE) as isize)}
-}
\ No newline at end of file
+}

src/gc/tests/lib.rs

 mod test_gc_harness;
 mod test_gcbench;
-mod test_gc_linked_list;
\ No newline at end of file
+mod test_gc_linked_list;

src/gc/tests/test_gc_harness.rs

@@ -275,4 +275,4 @@ fn test_alloc_trace() {
     heap::gc::start_trace(&mut roots, shared_space, lo_space);
 
     mutator.destroy();
-}
\ No newline at end of file
+}

src/gc/tests/test_gc_linked_list.rs

@@ -210,4 +210,4 @@ fn linked_list_survive_gc() {
     }
 
     mutator.destroy();
-}
\ No newline at end of file
+}

src/gc/tests/test_gcbench.rs

@@ -205,4 +205,4 @@ fn start() {
     println!("Finished with {} collections", heap::gc::GC_COUNT.load(Ordering::SeqCst));
 
     mutator.destroy();
-}
\ No newline at end of file
+}

src/runtime/entrypoints.rs

@@ -95,4 +95,4 @@ lazy_static! {
         aot: ValueLocation::Relocatable(RegGroup::GPR, String::from("muentry_frem")),
         jit: RwLock::new(None)
     };
-}
\ No newline at end of file
+}

src/runtime/exception_x64.rs

@@ -208,4 +208,4 @@ fn find_func_for_address (cf: &RwLockReadGuard<HashMap<MuID, RwLock<CompiledFunc
     }
     
     panic!("cannot find compiled function for pc 0x{:x}", pc_addr);
-}
\ No newline at end of file
+}

src/runtime/math.rs

@@ -4,4 +4,4 @@ pub extern fn muentry_frem(a: f64, b: f64) -> f64 {
     use std::ops::Rem;
 
     a.rem(b)
-}
\ No newline at end of file
+}

src/runtime/mm.rs

@@ -28,4 +28,4 @@ pub fn allocate_value(value: P<Value>, vm: &VM) -> ValueLocation {
     let addr = allocate(backend_ty.size, backend_ty.alignment).to_address();
 
     ValueLocation::Direct(RegGroup::GPR, addr)
-}
\ No newline at end of file
+}

src/runtime/mod.rs

@@ -203,4 +203,4 @@ pub extern fn mu_main(serialized_vm : *const c_char) {
         
         thread.join().unwrap();
     }
-}
\ No newline at end of file
+}

src/testutil/aot.rs

@@ -171,4 +171,4 @@ pub fn link_dylib_with_extra_srcs(funcs: Vec<MuName>, srcs: Vec<String>, out: &s
     out_path.push(out);
 
     link_dylib_internal(files, out_path)
-}
\ No newline at end of file
+}

src/testutil/c_api.rs

@@ -40,4 +40,4 @@ pub fn compile_run_c_test(test_file_path: &'static str) -> PathBuf {
     let test_out = exec(test);
 
     Path::new(&String::from_utf8(test_out.stdout).unwrap()).to_path_buf()
-}
\ No newline at end of file
+}

src/testutil/mod.rs

@@ -99,4 +99,4 @@ pub fn compile_fncs<'a>(entry: &'static str, fnc_names: Vec<&'static str>, build
     let libname = &get_dylib_name(entry);
     let dylib = aot::link_dylib(fnc_names.iter().map(|x| Mu(x)).collect(), libname, &vm);
     ll::Library::new(dylib.as_os_str()).unwrap()
-}
\ No newline at end of file
+}

src/utils/src/address.rs

@@ -196,4 +196,4 @@ impl fmt::Debug for ObjectReference {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         write!(f, "0x{:X}", self.0)
     }
-}
\ No newline at end of file
+}

src/utils/src/bit_utils.rs

@@ -43,4 +43,4 @@ mod tests {
         assert_eq!(set_nth_bit_u64(a, 2, 1), 0b100);
         assert_eq!(set_nth_bit_u64(b, 2, 0), 0b1011);
     }
-}
\ No newline at end of file
+}

src/utils/src/ir_utils.rs

@@ -4,4 +4,4 @@ use ast::ptr::*;
 
 pub fn make_i32_const(id: MuID, val: i32) -> P<Value> {
     unimplemented!()
-}
\ No newline at end of file
+}

src/utils/src/lib.rs

 extern crate byteorder;
 extern crate rustc_serialize;
 
+pub type BitSize    = usize;
 pub type ByteOffset = isize;
 pub type ByteSize   = usize;
 pub type Word       = usize;
@@ -46,4 +47,4 @@ pub use address::ObjectReference;
 pub mod vec_utils;
 
 pub mod bit_utils;
-pub mod string_utils;
\ No newline at end of file
+pub mod string_utils;

src/utils/src/linked_hashmap.rs

@@ -1128,4 +1128,4 @@ impl<K: Hash + Eq, V, S: BuildHasher> IntoIterator for LinkedHashMap<K, V, S> {
             marker: marker::PhantomData,
         }
     }
-}
\ No newline at end of file
+}

src/utils/src/mem.rs

@@ -44,4 +44,4 @@ mod tests{
         
         assert_eq!(raw, a);
     }
-}
\ No newline at end of file
+}

src/utils/src/string_utils.rs

@@ -9,4 +9,4 @@ pub fn replace(s: &mut String, index: usize, replace: &String, replace_len: usiz
             vec[index + i] = ' ' as u8;
         }
     }
-}
\ No newline at end of file
+}

src/utils/src/vec_utils.rs

@@ -142,4 +142,4 @@ pub fn map<T, Q, F> (vec: &Vec<T>, map_func: F) -> Vec<Q>
     }
 
     ret
-}
\ No newline at end of file
+}

src/vm/api/__api_gen_tester_mod.rs

@@ -19,7 +19,7 @@ mod deps {
     pub type MuName = String;
     pub type CName  = MuName;
 
-    pub struct APIHandleKey {
+    pub struct APIHandle {
         // stub
     }
 

src/vm/api/api_bridge.rs

@@ -105,17 +105,17 @@ fn from_MuBool(cbool: CMuBool) -> bool {
     cbool != 0
 }
 
-// APIHandleKey is immutable when used.
+// APIHandle is immutable when used.
 #[inline(always)]
-fn from_handle<'a>(cmuvalue: CMuValue) -> &'a APIHandleKey {
+fn from_handle<'a>(cmuvalue: CMuValue) -> &'a APIHandle {
     debug_assert!(!cmuvalue.is_null());
     unsafe {
-        &*(cmuvalue as *const APIHandleKey)
+        &*(cmuvalue as *const APIHandle)
     }
 }
 
 #[inline(always)]
-fn from_handle_optional<'a>(cmuvalue: CMuValue) -> Option<&'a APIHandleKey> {
+fn from_handle_optional<'a>(cmuvalue: CMuValue) -> Option<&'a APIHandle> {
     if cmuvalue.is_null() {
         None
     } else {
@@ -157,11 +157,11 @@ fn from_MuFlag_array<'a>(ptr: *const CMuFlag, len: usize) -> &'a [CMuFlag] {
 /// way as raw pointers. So this function will convert each element. This function is only called
 /// by `new_thread_nor`. As always, thread creation dominates the time.
 #[inline(always)]
-fn from_handle_array<'a>(ptr: *const CMuValue, len: usize) -> Vec<&'a APIHandleKey> {
+fn from_handle_array<'a>(ptr: *const CMuValue, len: usize) -> Vec<&'a APIHandle> {
     let slc = from_array_direct(ptr, len);
     slc.iter().map(|&e| {
         debug_assert!(!e.is_null());
-        unsafe { &*(e as *const APIHandleKey) }
+        unsafe { &*(e as *const APIHandle) }
     }).collect::<Vec<_>>()
 }
 
@@ -190,7 +190,7 @@ fn to_MuID(value: MuID) -> CMuID {
 }
 
 #[inline(always)]
-fn to_handle(muvalue: *const APIHandleKey) -> CMuValue {
+fn to_handle(muvalue: *const APIHandle) -> CMuValue {
     debug_assert!(!muvalue.is_null());
     muvalue as CMuValue
 }

src/vm/api/api_impl/mod.rs

@@ -45,5 +45,7 @@ mod common {
     pub use ast::ir::*;
     pub use ast::ptr::*;
     pub use ast::types::*;
+
+    pub use vm::handle::*;
 }
 

src/vm/api/api_impl/muvm.rs

@@ -151,4 +151,4 @@ pub extern fn mu_fastimpl_new_with_opts(opts: *const c_char) -> *mut CMuVM {
     debug!("The C-visible CMuVM struct address: {:?}", c_mvm);
 
     c_mvm
-}
\ No newline at end of file
+}

src/vm/api/api_new.rs

@@ -77,4 +77,4 @@ pub struct MuCtx {
     // GENERATE_BEGIN: MuCtx
     
     // GENERATE_END: MuCtx
-}
\ No newline at end of file
+}

src/vm/api/api_old.rs

@@ -73,23 +73,23 @@ impl MuVM {
 
 pub type MuArraySize = usize;
 
-pub type MuIntValue   = APIHandleKey;
+pub type MuIntValue   = APIHandle;
 
-pub type MuBundleNode = APIHandleKey;
-pub type MuChildNode  = APIHandleKey;
-pub type MuTypeNode   = APIHandleKey;
-pub type MuFuncSigNode= APIHandleKey;
-pub type MuConstNode  = APIHandleKey;
-pub type MuGlobalNode = APIHandleKey;
-pub type MuFuncNode   = APIHandleKey;
-pub type MuFuncVerNode= APIHandleKey;
-pub type MuBBNode     = APIHandleKey;
-pub type MuNorParamNode = APIHandleKey;
-pub type MuExcParamNode = APIHandleKey;
-pub type MuInstNode     = APIHandleKey;
-pub type MuInstResNode  = APIHandleKey;
-pub type MuLocalVarNode = APIHandleKey;
-pub type MuVarNode      = APIHandleKey;
+pub type MuBundleNode = APIHandle;
+pub type MuChildNode  = APIHandle;
+pub type MuTypeNode   = APIHandle;
+pub type MuFuncSigNode= APIHandle;
+pub type MuConstNode  = APIHandle;
+pub type MuGlobalNode = APIHandle;
+pub type MuFuncNode   = APIHandle;
+pub type MuFuncVerNode= APIHandle;
+pub type MuBBNode     = APIHandle;
+pub type MuNorParamNode = APIHandle;
+pub type MuExcParamNode = APIHandle;
+pub type MuInstNode     = APIHandle;
+pub type MuInstResNode  = APIHandle;
+pub type MuLocalVarNode = APIHandle;
+pub type MuVarNode      = APIHandle;
 
 pub type MuFlag          = usize;
 pub type MuDestKind      = MuFlag;
@@ -637,4 +637,4 @@ impl MuCtxInternal {
             cur_bundles: HashMap::new()
         }
     }
-}
\ No newline at end of file
+}

src/vm/api/localtests/api_bridge.rs

-../api_bridge.rs
\ No newline at end of file

src/vm/api/localtests/api_c.rs

-../api_c.rs
\ No newline at end of file

src/vm/api/localtests/mock.rs

@@ -23,7 +23,7 @@ mod deps {
     }
 
     #[derive(Debug)]
-    pub struct APIHandleKey {
+    pub struct APIHandle {
         pub ty: MuID,
         pub vb: ValueBox,
     }

src/vm/api/mod.rs

@@ -10,7 +10,7 @@ mod deps {
     pub use ast::ir::MuID;
     pub use ast::ir::MuName;
     pub use ast::ir::CName;
-    pub use ast::bundle::APIHandleKey;
+    pub use vm::handle::APIHandle;
     extern crate ast;
 }
 

src/vm/handle.rs

+use ast::ir::*;
+use ast::inst::*;
+
+use utils::BitSize;
+use utils::Address;
+use std::sync::Arc;
+
+#[derive(Clone, Debug)]
+pub struct APIHandle {
+    pub id: MuID,
+    pub v: APIHandleValue
+}
+
+#[derive(Clone, Debug)]
+pub enum APIHandleValue {
+    Int(u64, BitSize),
+    Float(f32),
+    Double(f64),
+    UPtr(Address),
+    UFP(Address),
+
+    // SeqValue
+    Struct(Vec<APIHandleValue>),
+    Array (Vec<APIHandleValue>),
+    Vector(Vec<APIHandleValue>),
+
+    // GenRef
+    Ref(Address),
+    IRef(Address),
+    TagRef64(u64),
+    FuncRef,
+    ThreadRef,
+    StackRef,
+    FCRef, // frame cursor ref
+
+    // GenRef->IR
+    Bundle,
+
+    // GenRef->IR->Child
+    Type(MuID),
+    FuncSig(MuID),
+    FuncVer(MuID),
+    BB,
+    Inst,
+
+    // GenRef->IR->Child->Var->Global
+    Const,
+    Global(MuID),
+    Func,
+    ExpFunc,
+
+    // GenRef->IR->Child->Var->Local
+    NorParam,
+    ExcParam,
+    InstRes,
+}
+
+impl APIHandleValue {
+    pub fn as_iref(&self) -> Address {
+        match self {
+            &APIHandleValue::IRef(addr) => addr,
+            _ => panic!("expected IRef")
+        }
+    }
+}
+
+pub fn store(ord: MemoryOrder, loc: Arc<APIHandle>, val: Arc<APIHandle>) {
+    // FIXME: take memory order into consideration
+
+    // get address
+    let addr = loc.v.as_iref();
+
+    // get value and store
+    // we will store here (its unsafe)
+    unsafe {
+        match val.v {
+            APIHandleValue::Int(ival, bits) => {
+                match bits {