From 7d8544ad898255fc4dffab0a36c6cb69fce421a1 Mon Sep 17 00:00:00 2001
From: Artem Strygin <art-snake@yandex-team.ru>
Date: Sat, 29 Jul 2017 00:57:23 +0300
Subject: Implement read Session.

Helper for validate read problems locally,

Change-Id: I2bfbbaab8a67c0fd0cee3dadcd0f9cad5953101c
Reviewed-on: https://pdfium-review.googlesource.com/9552
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Art Snake <art-snake@yandex-team.ru>
---
 core/fpdfapi/parser/cpdf_read_validator.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'core/fpdfapi/parser/cpdf_read_validator.cpp')

diff --git a/core/fpdfapi/parser/cpdf_read_validator.cpp b/core/fpdfapi/parser/cpdf_read_validator.cpp
index 148ecfd424..be20f18f33 100644
--- a/core/fpdfapi/parser/cpdf_read_validator.cpp
+++ b/core/fpdfapi/parser/cpdf_read_validator.cpp
@@ -26,6 +26,19 @@ FX_FILESIZE AlignUp(FX_FILESIZE offset) {
 
 }  // namespace
 
+CPDF_ReadValidator::Session::Session(CPDF_ReadValidator* validator)
+    : validator_(validator) {
+  ASSERT(validator_);
+  saved_read_error_ = validator_->read_error_;
+  saved_has_unavailable_data_ = validator_->has_unavailable_data_;
+  validator_->ResetErrors();
+}
+
+CPDF_ReadValidator::Session::~Session() {
+  validator_->read_error_ |= saved_read_error_;
+  validator_->has_unavailable_data_ |= saved_has_unavailable_data_;
+}
+
 CPDF_ReadValidator::CPDF_ReadValidator(
     const CFX_RetainPtr<IFX_SeekableReadStream>& file_read,
     CPDF_DataAvail::FileAvail* file_avail)
-- 
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