[coverage] Block coverage with support for IfStatements

src/debug/debug.cc

 // Copyright 2012 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/debug/debug.h"
 
 #include <memory>
 
 #include "src/api.h"
 #include "src/arguments.h"
@@ skipping 1600 matching lines @@
 
   // Create debug info and add it to the list.
   Handle<DebugInfo> debug_info = isolate_->factory()->NewDebugInfo(shared);
   DebugInfoListNode* node = new DebugInfoListNode(*debug_info);
   node->set_next(debug_info_list_);
   debug_info_list_ = node;
 
   return debug_info;
 }
 
+void Debug::InstallCoverageInfo(Handle<SharedFunctionInfo> shared,
+                                Handle<CoverageInfo> coverage_info) {
+  DCHECK(FLAG_block_coverage);
+  DCHECK(!coverage_info.is_null());
+
+  Handle<DebugInfo> debug_info = GetOrCreateDebugInfo(shared);
+
+  DCHECK(!debug_info->HasCoverageInfo());
+
+  debug_info->set_flags(debug_info->flags() | DebugInfo::kHasCoverageInfo);
+  debug_info->set_coverage_info(*coverage_info);
+}
+
 void Debug::FindDebugInfo(Handle<DebugInfo> debug_info,
                           DebugInfoListNode** prev, DebugInfoListNode** curr) {
   HandleScope scope(isolate_);
   *prev = nullptr;
   *curr = debug_info_list_;
   while (*curr != nullptr) {
     if ((*curr)->debug_info().is_identical_to(debug_info)) return;
     *prev = *curr;
     *curr = (*curr)->next();
   }
@@ skipping 870 matching lines @@
     isolate_->Throw(*isolate_->factory()->NewEvalError(
         MessageTemplate::kNoSideEffectDebugEvaluate));
   }
   isolate_->set_needs_side_effect_check(old_needs_side_effect_check_);
   isolate_->debug()->UpdateHookOnFunctionCall();
   isolate_->debug()->side_effect_check_failed_ = false;
 }
 
 }  // namespace internal
 }  // namespace v8