Map v8::Function to JSReceiver + IsCallable

test/cctest/test-feedback-vector.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 #include "test/cctest/cctest.h"
 
 #include "src/api.h"
 #include "src/debug/debug.h"
 #include "src/execution.h"
@@ skipping 182 matching lines @@
   CcTest::InitializeVM();
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
 
   // Make sure function f has a call that uses a type feedback slot.
   CompileRun(
       "function fun() {};"
       "function f(a) { a(); } f(fun);");
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))));
   // There should be one IC.
   Handle<Code> code = handle(f->shared()->code(), isolate);
   TypeFeedbackInfo* feedback_info =
       TypeFeedbackInfo::cast(code->type_feedback_info());
   CHECK_EQ(1, feedback_info->ic_total_count());
   CHECK_EQ(0, feedback_info->ic_with_type_info_count());
   CHECK_EQ(0, feedback_info->ic_generic_count());
   Handle<TypeFeedbackVector> feedback_vector =
       handle(f->shared()->feedback_vector(), isolate);
   FeedbackVectorHelper helper(feedback_vector);
@@ skipping 33 matching lines @@
   CcTest::InitializeVM();
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
 
   // Make sure function f has a call that uses a type feedback slot.
   CompileRun(
       "function foo() { return 17; }"
       "function f(a) { a(); } f(foo);");
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))));
   // There should be one IC.
   Handle<TypeFeedbackVector> feedback_vector =
       Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate);
   FeedbackVectorSlot slot(0);
   CallICNexus nexus(feedback_vector, slot);
   CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
   // CallIC doesn't return map feedback.
   CHECK(!nexus.FindFirstMap());
 
   CompileRun("f(function() { return 16; })");
@@ skipping 20 matching lines @@
   CcTest::InitializeVM();
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
 
   // Make sure function f has a call that uses a type feedback slot.
   CompileRun(
       "var o = { foo: 3 };"
       "function f(a) { return a.foo; } f(o);");
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))));
   // There should be one IC.
   Handle<TypeFeedbackVector> feedback_vector =
       Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate);
   FeedbackVectorSlot slot(0);
   LoadICNexus nexus(feedback_vector, slot);
   CHECK_EQ(PREMONOMORPHIC, nexus.StateFromFeedback());
 
   CompileRun("f(o)");
   CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
   // Verify that the monomorphic map is the one we expect.
@@ skipping 36 matching lines @@
 
   // Function f has 3 LoadICs, one for each o, but the ICs share the same
   // feedback vector IC slot.
   CompileRun(
       "o = 10;"
       "function f() {"
       "  var x = o + 10;"
       "  return o + x + o;"
       "}"
       "f();");
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))));
   // There should be one IC slot.
   Handle<TypeFeedbackVector> feedback_vector =
       Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate);
   FeedbackVectorHelper helper(feedback_vector);
   CHECK_EQ(1, helper.slot_count());
   FeedbackVectorSlot slot(0);
   LoadICNexus nexus(feedback_vector, slot);
   CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
 }
 
 
 TEST(VectorLoadICOnSmi) {
   if (i::FLAG_always_opt) return;
   CcTest::InitializeVM();
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
 
   // Make sure function f has a call that uses a type feedback slot.
   CompileRun(
       "var o = { foo: 3 };"
       "function f(a) { return a.foo; } f(o);");
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f"))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str("f")))));
   // There should be one IC.
   Handle<TypeFeedbackVector> feedback_vector =
       Handle<TypeFeedbackVector>(f->shared()->feedback_vector(), isolate);
   FeedbackVectorSlot slot(0);
   LoadICNexus nexus(feedback_vector, slot);
   CHECK_EQ(PREMONOMORPHIC, nexus.StateFromFeedback());
 
   CompileRun("f(34)");
   CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
   // Verify that the monomorphic map is the one we expect.
@@ skipping 25 matching lines @@
   // The degree of polymorphism doesn't change.
   CompileRun("f(100)");
   CHECK_EQ(POLYMORPHIC, nexus.StateFromFeedback());
   MapHandleList maps2;
   nexus.FindAllMaps(&maps2);
   CHECK_EQ(2, maps2.length());
 }
 
 
 static Handle<JSFunction> GetFunction(const char* name) {
-  Handle<JSFunction> f = v8::Utils::OpenHandle(
-      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str(name))));
+  Handle<JSFunction> f = Handle<JSFunction>::cast(v8::Utils::OpenHandle(
+      *v8::Handle<v8::Function>::Cast(CcTest::global()->Get(v8_str(name)))));
   return f;
 }
 
 
 TEST(ReferenceContextAllocatesNoSlots) {
   if (i::FLAG_always_opt) return;
   CcTest::InitializeVM();
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
@@ skipping 153 matching lines @@
   // There should be one IC slot.
   Handle<TypeFeedbackVector> feedback_vector(f->shared()->feedback_vector());
   FeedbackVectorHelper helper(feedback_vector);
   CHECK_EQ(1, helper.slot_count());
   FeedbackVectorSlot slot(0);
   StoreICNexus nexus(feedback_vector, slot);
   CHECK_EQ(MONOMORPHIC, nexus.StateFromFeedback());
 }
 
 }  // namespace