From 4caa1200938a397d7f2f193872355129adb768ed Mon Sep 17 00:00:00 2001
From: Henrique Nakashima <hnakashima@chromium.org>
Date: Fri, 6 Jul 2018 20:32:29 +0000
Subject: Maintain a stack of CPDF_ContentMark while parsing a stream.

This avoids copying the CPDF_ContentMark every time a mark is closed.
Another benefit is that the same CPDF_ContentMarkItem vector will be
shared by page objects before and after a nested mark.

Bug: pdfium:1037
Change-Id: I6197f0b9a4693ef84da9269f86a2629aa50d8685
Reviewed-on: https://pdfium-review.googlesource.com/37190
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
---
 core/fpdfapi/page/cpdf_streamcontentparser.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'core/fpdfapi/page/cpdf_streamcontentparser.h')

diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h
index ae0a7f39af..238999b846 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.h
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.h
@@ -10,6 +10,7 @@
 #include <map>
 #include <memory>
 #include <set>
+#include <stack>
 #include <vector>
 
 #include "core/fpdfapi/page/cpdf_contentmark.h"
@@ -219,7 +220,7 @@ class CPDF_StreamContentParser {
   uint32_t m_ParamCount;
   UnownedPtr<CPDF_StreamParser> m_pSyntax;
   std::unique_ptr<CPDF_AllStates> m_pCurStates;
-  std::unique_ptr<CPDF_ContentMark> m_pCurContentMark;
+  std::stack<std::unique_ptr<CPDF_ContentMark>> m_ContentMarksStack;
   std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList;
   UnownedPtr<CPDF_TextObject> m_pLastTextObject;
   float m_DefFontSize;
-- 
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