1 files changed, 68 insertions, 0 deletions
diff --git a/deps/v8/src/code-comments.h b/deps/v8/src/code-comments.h
new file mode 100644
index 0000000000..8d3d7637a1
--- /dev/null
+++ b/deps/v8/src/code-comments.h
@@ -0,0 +1,68 @@
+// Copyright 2018 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.
+
+#ifndef V8_CODE_COMMENTS_H_
+#define V8_CODE_COMMENTS_H_
+
+#include <ostream>
+#include <string>
+#include <vector>
+
+#include "include/v8-internal.h"
+
+namespace v8 {
+namespace internal {
+
+class Assembler;
+
+// Code comments section layout:
+// byte count              content
+// ------------------------------------------------------------------------
+// 4                       size as uint32_t
+// [Inline array of CodeCommentEntry in increasing pc_offset order]
+// ┌ 4                     pc_offset of entry as uint32_t
+// ├ 4                     length of the comment including terminating '\0'
+// └ <variable length>     characters of the comment including terminating '\0'
+
+struct CodeCommentEntry {
+  uint32_t pc_offset;
+  std::string comment;
+  uint32_t comment_length() const;
+  uint32_t size() const;
+};
+
+class CodeCommentsWriter {
+ public:
+  void Add(uint32_t pc_offset, std::string comment);
+  void Emit(Assembler* assm);
+  size_t entry_count() const;
+  uint32_t section_size() const;
+
+ private:
+  uint32_t byte_count_ = 0;
+  std::vector<CodeCommentEntry> comments_;
+};
+
+class CodeCommentsIterator {
+ public:
+  // Address can be kNullAddress. In this case HasCurrent() will return false.
+  explicit CodeCommentsIterator(Address code_comments_start);
+  uint32_t size() const;
+  const char* GetComment() const;
+  uint32_t GetCommentSize() const;
+  uint32_t GetPCOffset() const;
+  void Next();
+  bool HasCurrent() const;
+
+ private:
+  Address code_comments_start_;
+  Address current_entry_;
+};
+
+void PrintCodeCommentsSection(std::ostream& out, Address code_comments_start);
+
+}  // namespace internal
+}  // namespace v8
+
+#endif  // V8_CODE_COMMENTS_H_