Drop JSReference, it's not used anymore

It's originally used in teleporter Interpreter, but it's dropped now.

Author: Constellation

Diff for: iv/lv5/jsreference.h

@@ -10,7 +10,6 @@
 #include <iv/lv5/jsobject_fwd.h>
 #include <iv/lv5/context.h>
 #include <iv/lv5/jsenv.h>
-#include <iv/lv5/jsreference.h>
 #include <iv/lv5/jsbooleanobject.h>
 #include <iv/lv5/jsnumberobject.h>
 #include <iv/lv5/jsstringobject.h>
@@ -114,10 +113,6 @@ inline bool JSLayout::IsObject() const {
   return IsCell() && cell()->tag() == radio::OBJECT;
 }
 
-inline bool JSLayout::IsReference() const {
-  return IsCell() && cell()->tag() == radio::REFERENCE;
-}
-
 inline bool JSLayout::IsEnvironment() const {
   return IsCell() && cell()->tag() == radio::ENVIRONMENT;
 }
@@ -130,11 +125,6 @@ inline bool JSLayout::IsPrimitive() const {
   return IsNumber() || IsString() || IsBoolean() || IsSymbol();
 }
 
-inline JSReference* JSLayout::reference() const {
-  assert(IsReference());
-  return static_cast<JSReference*>(value_.cell_);
-}
-
 inline JSEnv* JSLayout::environment() const {
   assert(IsEnvironment());
   return static_cast<JSEnv*>(value_.cell_);
@@ -219,10 +209,6 @@ inline void JSLayout::set_value(JSSymbol* val) {
   value_.cell_ = static_cast<radio::Cell*>(val);
 }
 
-inline void JSLayout::set_value(JSReference* val) {
-  value_.cell_ = static_cast<radio::Cell*>(val);
-}
-
 inline void JSLayout::set_value(JSEnv* val) {
   value_.cell_ = static_cast<radio::Cell*>(val);
 }
@@ -323,16 +309,15 @@ namespace jsval32 {
 
 static const uint32_t kOtherCellTag   = 0xffffffff;  // cell range end
 static const uint32_t kEnvironmentTag = 0xfffffffe;
-static const uint32_t kReferenceTag   = 0xfffffffd;
-static const uint32_t kStringTag      = 0xfffffffc;
-static const uint32_t kSymbolTag      = 0xfffffffb;
-static const uint32_t kObjectTag      = 0xfffffffa;  // cell range start
-static const uint32_t kEmptyTag       = 0xfffffff9;
-static const uint32_t kUndefinedTag   = 0xfffffff8;
-static const uint32_t kNullTag        = 0xfffffff7;
-static const uint32_t kBoolTag        = 0xfffffff6;
-static const uint32_t kNumberTag      = 0xfffffff5;
-static const uint32_t kInt32Tag       = 0xfffffff4;
+static const uint32_t kStringTag      = 0xfffffffd;
+static const uint32_t kSymbolTag      = 0xfffffffc;
+static const uint32_t kObjectTag      = 0xfffffffb;  // cell range start
+static const uint32_t kEmptyTag       = 0xfffffffa;
+static const uint32_t kUndefinedTag   = 0xfffffff9;
+static const uint32_t kNullTag        = 0xfffffff8;
+static const uint32_t kBoolTag        = 0xfffffff7;
+static const uint32_t kNumberTag      = 0xfffffff6;
+static const uint32_t kInt32Tag       = 0xfffffff5;
 
 inline bool InPtrRange(uint32_t tag) {
   return kObjectTag <= tag;
@@ -384,10 +369,6 @@ inline bool JSLayout::IsNumber() const {
   return value_.struct_.tag_ < detail::jsval32::kNumberTag;
 }
 
-inline bool JSLayout::IsReference() const {
-  return value_.struct_.tag_ == detail::jsval32::kReferenceTag;
-}
-
 inline bool JSLayout::IsEnvironment() const {
   return value_.struct_.tag_ == detail::jsval32::kEnvironmentTag;
 }
@@ -404,11 +385,6 @@ inline bool JSLayout::IsPrimitive() const {
   return IsNumber() || IsString() || IsBoolean() || IsSymbol();
 }
 
-inline JSReference* JSLayout::reference() const {
-  assert(IsReference());
-  return value_.struct_.payload_.reference_;
-}
-
 inline JSEnv* JSLayout::environment() const {
   assert(IsEnvironment());
   return value_.struct_.payload_.environment_;
@@ -500,11 +476,6 @@ inline void JSLayout::set_value(JSSymbol* val) {
   value_.struct_.tag_ = detail::jsval32::kSymbolTag;
 }
 
-inline void JSLayout::set_value(JSReference* ref) {
-  value_.struct_.payload_.reference_ = ref;
-  value_.struct_.tag_ = detail::jsval32::kReferenceTag;
-}
-
 inline void JSLayout::set_value(JSEnv* ref) {
   value_.struct_.payload_.environment_ = ref;
   value_.struct_.tag_ = detail::jsval32::kEnvironmentTag;
@@ -854,7 +825,7 @@ inline JSVal JSVal::ToPrimitive(Context* ctx,
   if (IsObject()) {
     return object()->DefaultValue(ctx, hint, e);
   } else {
-    assert(!IsEnvironment() && !IsReference() && !IsEmpty());
+    assert(!IsEnvironment() && !IsEmpty());
     return *this;
   }
 }
@@ -902,7 +873,7 @@ inline bool JSLayout::IsCallable() const {
 }
 
 inline void JSLayout::CheckObjectCoercible(Error* e) const {
-  assert(!IsEnvironment() && !IsReference() && !IsEmpty());
+  assert(!IsEnvironment() && !IsEmpty());
   if (IsNullOrUndefined()) {
     e->Report(Error::Type, "null or undefined has no properties");
   }

Diff for: iv/lv5/jsval.h

@@ -27,7 +27,6 @@ class Cell;
 class Error;
 class JSEnv;
 class Context;
-class JSReference;
 class JSEnv;
 class JSObject;
 class JSString;
@@ -51,7 +50,6 @@ struct Layout<4, true> {
         JSObject* object_;
         JSString* string_;
         JSSymbol* symbol_;
-        JSReference* reference_;
         JSEnv* environment_;
         int32_t int32_;
         radio::Cell* cell_;
@@ -75,7 +73,6 @@ struct Layout<4, false> {
         JSObject* object_;
         JSString* string_;
         JSSymbol* symbol_;
-        JSReference* reference_;
         JSEnv* environment_;
         int32_t int32_;
         radio::Cell* cell_;
@@ -100,7 +97,6 @@ struct Layout<8, true> {
         JSObject* object_;
         JSString* string_;
         JSSymbol* symbol_;
-        JSReference* reference_;
         JSEnv* environment_;
         JSVal* jsvalref_;
         int32_t int32_;
@@ -128,7 +124,6 @@ struct Layout<8, false> {
         JSObject* object_;
         JSString* string_;
         JSSymbol* symbol_;
-        JSReference* reference_;
         JSEnv* environment_;
         JSVal* jsvalref_;
         int32_t int32_;
@@ -274,16 +269,12 @@ class JSLayout {
 
   bool IsObject() const;
 
-  bool IsReference() const;
-
   bool IsEnvironment() const;
 
   bool IsOtherCell() const;
 
   bool IsPrimitive() const;
 
-  JSReference* reference() const;
-
   JSEnv* environment() const;
 
   JSString* string() const;
@@ -314,8 +305,6 @@ class JSLayout {
 
   void set_value(JSSymbol* val);
 
-  void set_value(JSReference* val);
-
   void set_value(JSEnv* val);
 
   void set_value(detail::JSTrueType val);
@@ -395,11 +384,6 @@ class JSVal : public JSLayout {
     set_value(val);
   }
 
-  JSVal(JSReference* val)  // NOLINT
-    : JSLayout() {
-    set_value(val);
-  }
-
   JSVal(JSEnv* val)  // NOLINT
     : JSLayout() {
     set_value(val);