[coverage] Block coverage with support for IfStatements

src/factory.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/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast.h"
 #include "src/base/bits.h"
@@ skipping 2590 matching lines @@
   debug_info->set_debugger_hints(shared->debugger_hints());
   debug_info->set_debug_bytecode_array(heap->undefined_value());
   debug_info->set_break_points(heap->empty_fixed_array());
 
   // Link debug info to function.
   shared->set_debug_info(*debug_info);
 
   return debug_info;
 }
 
+Handle<CoverageInfo> Factory::NewCoverageInfo(
+    const ZoneVector<SourceRange>& slots) {
+  const int slot_count = static_cast<int>(slots.size());
+
+  const int length = CoverageInfo::FixedArrayLengthForSlotCount(slot_count);
+  Handle<CoverageInfo> info =
+      Handle<CoverageInfo>::cast(NewUninitializedFixedArray(length));
+
+  for (int i = 0; i < slot_count; i++) {
+    SourceRange range = slots[i];
+    info->InitializeSlot(i, range.start, range.end);
+  }
+
+  return info;
+}
+
 Handle<BreakPointInfo> Factory::NewBreakPointInfo(int source_position) {
   Handle<BreakPointInfo> new_break_point_info =
       Handle<BreakPointInfo>::cast(NewStruct(TUPLE2_TYPE));
   new_break_point_info->set_source_position(source_position);
   new_break_point_info->set_break_point_objects(*undefined_value());
   return new_break_point_info;
 }
 
 Handle<StackFrameInfo> Factory::NewStackFrameInfo() {
   Handle<StackFrameInfo> stack_frame_info =
@@ skipping 323 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), rw_attribs);
     Descriptor d = Descriptor::AccessorConstant(
         Handle<Name>(Name::cast(prototype->name())), prototype, rw_attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8