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2018-05-25Make CPDF_Page retainable.Tom Sepez
Small step to reducing the differences between XFA and non-XFA. We still use the RetainPtr pretty much as if it were an unique_ptr, in that we're not yet caching pages and handing out multiple pointers to the same page in the non-XFA case. The one change is in page view cleanup, where we no longer need a boolean and can take (sufficient) page ownership with a RetainPtr. Tidy up some document.h -> page.h -> document.h circular inclusion while we're at it. NOTE: Wait for imminent branch to pass before landing. We'll want this to bake a while. Change-Id: I64a2f12ac3424ece1063d40583995b834117cf34 Reviewed-on: https://pdfium-review.googlesource.com/32790 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-25Add proper const/non-const versions of CPDF_Dictionary::GetDictFor().Lei Zhang
BUG=pdfium:234 Change-Id: I6fde00c976ad4bb9cab632f465cf292f5b1da3d2 Reviewed-on: https://pdfium-review.googlesource.com/32914 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-25Add proper const/non-const versions of CPDF_Dictionary::GetArrayFor().Lei Zhang
BUG=pdfium:234 Change-Id: I5c900aa0547afef0c60de35422b4ee489daa6cfb Reviewed-on: https://pdfium-review.googlesource.com/32913 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-25Mark more CPDF_Objects as const in font code.Lei Zhang
Change-Id: Id37333ba61ad0d395055acffd75d4d8be5eb2b3e Reviewed-on: https://pdfium-review.googlesource.com/32911 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-25Add proper const/non-const versions of CPDF_Dictionary::GetStreamFor().chromium/3441Lei Zhang
BUG=pdfium:234 Change-Id: Ia3e758bbe5c445c3856f5215e900e02a16b4d7d7 Reviewed-on: https://pdfium-review.googlesource.com/32910 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-25Mark CPDF_Object pointers in pattern code as const.Lei Zhang
Change-Id: Id7bf252ebe25c92d26065d1138a445ebb2f78d0b Reviewed-on: https://pdfium-review.googlesource.com/32187 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-24CPDF_HintTables should not try to read 0 bits.Lei Zhang
CFX_BitStream::GetBits() got refactored recently, with an assert to not read 0 bits. A fuzzer then discovered code that is trying to do that. BUG=chromium:846394 Change-Id: Ib18b47200c82aab369109b5911540db724172690 Reviewed-on: https://pdfium-review.googlesource.com/32934 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-23Remove GetBits32().Lei Zhang
Replace it with CFX_BitStream. Change-Id: Ib74657f888b8dec8b6fdad7b49e28d250991c590 Reviewed-on: https://pdfium-review.googlesource.com/32852 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-22Make friend RetainPtr<T> statements consistently public.Lei Zhang
Also make destructors private for RetainPtr sub-classes, and add missing destructors. Change-Id: I451bf0aae2dae943b1f450d0aa4ca5124dc578fd Reviewed-on: https://pdfium-review.googlesource.com/32853 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-22Simplify CPDF_ShadingPattern::Validate().Lei Zhang
Fix some nits in CPDF_ShadingPattern as well. Change-Id: I6b4b73f99031733a113fe2ad1bdc1d1e565b7a7d Reviewed-on: https://pdfium-review.googlesource.com/32738 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-17Update third_party/base/compiler_specific.h.Lei Zhang
Import Chromium's base/compiler_specific.h from r537069. Now that FALLTHROUGH is available via compiler_specific.h, remove FX_FALLTHROUGH. Change-Id: I8b9631a4f007673e10e0c26951dfd61e9dcada30 Reviewed-on: https://pdfium-review.googlesource.com/32639 Reviewed-by: Nico Weber <thakis@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-16Use pdfium::span<> in cpdf_crypto_handler.hTom Sepez
Remove some unused args along the way. Change-Id: I234a674d4d6cc79b33087bc850f5df36bae25870 Reviewed-on: https://pdfium-review.googlesource.com/32596 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-16Use pdfium::span<> in cpdf_creator.Tom Sepez
Change-Id: I959fe5dc30fcfe2176c7e5a64b07d082313a22b4 Reviewed-on: https://pdfium-review.googlesource.com/32595 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-16Cleanup CPDF_ContentParserDan Sinclair
This CL cleans up the CPDF_ContentParser code. The m_bIsDone flag has been removed and a kComplete stage added. Each of the processing methods returns the next stage instead of setting the internal flag automatically. The infinite loop is removed for simpler straight line code. Change-Id: Id817a5fa054e28c331c68c63ec2c12b369cb0233 Reviewed-on: https://pdfium-review.googlesource.com/32611 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-16Use pdfium::span<> in CPDF_EncryptorTom Sepez
Provides more lifetime/bounds checking "for free". Change-Id: Ifaf7a95c0f6f288777cd6ef35996e01b3dc4bc63 Reviewed-on: https://pdfium-review.googlesource.com/32594 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-15Break CPDF_CotnentParser::Continue into piecesDan Sinclair
This CL separates the parts of CPDF_ContentParser::Continue into three distinct methods. It clarifes when and what is returned from Continue. Change-Id: Id7a9bf1aa16f366f567cce74006c27c452cb5dcc Reviewed-on: https://pdfium-review.googlesource.com/32531 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-14Cleanup CPDF_Form parsing codechromium/3431Dan Sinclair
This CL folds the StartParse() method of CPDF_Form into the ParserContent method. The no arguments ParseContent is removed and ParseContentWithParams renamed to ParseContent. The callsites are updated to pass the nullptr's. Bug: chromium:813349 Change-Id: I304b77aef1de1b9aa20e4a3044db5023f5701584 Reviewed-on: https://pdfium-review.googlesource.com/32511 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-11Reland "Filter out "Type" and "DecodeParms" from trailer keys."Henrique Nakashima
This reverts commit 466bd4f4e0cb2bc2a7b3626948609268c52c4690. Reason for revert: On closer inspection, it seems the test is not flaky, and the root cause of the failure is an SEH exception, which is the true source of flakiness. Other tests are also affected. Original change's description: > Revert "Filter out "Type" and "DecodeParms" from trailer keys." > > This reverts commit 5f7c5be8b7072d46e8d8088a1ec14370ecfad44c. > > Reason for revert: New test is flaky, ID is not stable. > > Original change's description: > > Filter out "Type" and "DecodeParms" from trailer keys. > > > > Bug: pdfium:873 > > Change-Id: I12ae5b8776f5a73c4be81bed53ada05c94d46882 > > Reviewed-on: https://pdfium-review.googlesource.com/32190 > > Reviewed-by: dsinclair <dsinclair@chromium.org> > > Commit-Queue: dsinclair <dsinclair@chromium.org> > > TBR=dsinclair@chromium.org,hnakashima@chromium.org > > # Not skipping CQ checks because original CL landed > 1 day ago. > > Bug: pdfium:873 > Change-Id: I642771e12c61181c7b81681dae7b2f5549c14b18 > Reviewed-on: https://pdfium-review.googlesource.com/32430 > Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> > Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> TBR=dsinclair@chromium.org,hnakashima@chromium.org Change-Id: I2552729610c9f8adf02c70a2a43e2383ceda19b5 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: pdfium:873 Reviewed-on: https://pdfium-review.googlesource.com/32397 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-05-11Revert "Filter out "Type" and "DecodeParms" from trailer keys."Henrique Nakashima
This reverts commit 5f7c5be8b7072d46e8d8088a1ec14370ecfad44c. Reason for revert: New test is flaky, ID is not stable. Original change's description: > Filter out "Type" and "DecodeParms" from trailer keys. > > Bug: pdfium:873 > Change-Id: I12ae5b8776f5a73c4be81bed53ada05c94d46882 > Reviewed-on: https://pdfium-review.googlesource.com/32190 > Reviewed-by: dsinclair <dsinclair@chromium.org> > Commit-Queue: dsinclair <dsinclair@chromium.org> TBR=dsinclair@chromium.org,hnakashima@chromium.org # Not skipping CQ checks because original CL landed > 1 day ago. Bug: pdfium:873 Change-Id: I642771e12c61181c7b81681dae7b2f5549c14b18 Reviewed-on: https://pdfium-review.googlesource.com/32430 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-05-11Use more smart pointer types in CPDF_DIBSource.Tom Sepez
Use one std::vector<>, too. As a result, make GetDecodeAndMaskArray() update that member directly rather than forcing callers to assign to it each time. Change-Id: I51a039b9e8cce7ff885edf395622eaf6a5c4816a Reviewed-on: https://pdfium-review.googlesource.com/32313 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-10Add CPDF_Transparency.Lei Zhang
Encapsulates transparency status instead of having it be a raw int. Change-Id: I8b10dafa97da112795cf84c46cf416a0294551d5 Reviewed-on: https://pdfium-review.googlesource.com/32194 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-10Fix destruction order in CPDF_Dibsource.Tom Sepez
The order of the elements in the header is correct, but we were clearing it early in the destructor itself. Bug: 840695 Change-Id: I1585722fed8dc672ffd5e1dc9a1eea1c7c80f310 Reviewed-on: https://pdfium-review.googlesource.com/32311 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-09Add proper const/non-const versions of CPDF_Array methods.Lei Zhang
Instead of having const methods that return non-const pointers. BUG=pdfium:234 Change-Id: I61495543f67229500dfcf2248e93468e9a9b23cf Reviewed-on: https://pdfium-review.googlesource.com/32183 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-09Add proper const/non-const versions of CPDF_Object methods.Lei Zhang
Instead of having const methods that return non-const pointers. BUG=pdfium:234 Change-Id: I598e9b4f267f702e2e71001cfe3aa3c9e9d8c12f Reviewed-on: https://pdfium-review.googlesource.com/32182 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-09Split the MaybeOwned CPDF_Dictionary in CPDF_FlateEncoder.Lei Zhang
The owned copy needs to be modified, so it should be non-const. Whereas the unowned copy can be const. Add a GetClonedDict() method for accessing the modifiable dictionary. Change-Id: Ia7f6bcc5f917864cd1bbc7b5000a86f6e433ae9a Reviewed-on: https://pdfium-review.googlesource.com/32181 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-09Mark numerious pointers as const.Lei Zhang
They are mostly CPDF_Object* and derived classes, but others that should be are marked const as well. Change-Id: Ib3344d7d8db90940df8edc97c0dd6c59da080541 Reviewed-on: https://pdfium-review.googlesource.com/32180 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-09Add constants for PDF 1.7 spec, table 7.13.Lei Zhang
BUG=pdfium:1049 Change-Id: I3a589fe51f2e584dc130ba31faa144d4494a1b08 Reviewed-on: https://pdfium-review.googlesource.com/32179 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-09Break backcolor code out of CPDF_RenderStatus::LoadSMask().Lei Zhang
Fix some nits in the code in the process. Change-Id: I660b3bf547823a11bc291ed2dd1ec19a76b24b5b Reviewed-on: https://pdfium-review.googlesource.com/32178 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-09Filter out "Type" and "DecodeParms" from trailer keys.Henrique Nakashima
Bug: pdfium:873 Change-Id: I12ae5b8776f5a73c4be81bed53ada05c94d46882 Reviewed-on: https://pdfium-review.googlesource.com/32190 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-08Remove almost all usages of CFX_FixedBufGrow with std::vectorNicolas Pena
Tested by running safetynet_compare.py on this patch vs master. The results were 0 regressions and 0 improvements. The two remaining usages cannot be replaced because they would cause a regression. Bug: pdfium:177 Change-Id: I43eddf4ffaac2eb063f2004d6606bc3cd6e627ac Reviewed-on: https://pdfium-review.googlesource.com/32159 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-08Remove PDFTRANS_KNOCKOUT.Lei Zhang
No code actually checks to see if it is set. Change-Id: I37631713d568f116df1c0495ffd7d7d64ddce69a Reviewed-on: https://pdfium-review.googlesource.com/32186 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-08Add constants for PDF 1.7 spec, table 7.2 and 7.3.Lei Zhang
Add constants/transparency.h. The header lists constants from chapter 7 of the PDF spec. BUG=pdfium:1049 Change-Id: I66bd6fceb24807eec9c308e2e47cec3f2f836ffb Reviewed-on: https://pdfium-review.googlesource.com/32177 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-08Move CalculatePitch8() to core/fxcodec.Lei Zhang
Use it in more places there. Change-Id: I477670a5946ec9033ad5f2bef0fbcddb52682066 Reviewed-on: https://pdfium-review.googlesource.com/31271 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-08Rename CPDF_Document::GetPage() to GetPageDictionary().Tom Sepez
Avoids a conflict should we wish to have the document actually track pages, with a GetPage() that returns CPDF_Page. Do the same thing to CPDF_DataAvail along the way. Add some missing consts as well. Change-Id: I2cb2213cc4c0649662fceab80407ee4a3f4cf30e Reviewed-on: https://pdfium-review.googlesource.com/32158 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-08Make one more CPDF_PageObjectHolder member protected.Lei Zhang
Change-Id: Id9288d504f063759f69632ab59b0a21569ff76d8 Reviewed-on: https://pdfium-review.googlesource.com/32113 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Make more CPDF_PageObjectHolder members protected.Lei Zhang
Change-Id: Id31b9f6ac33971c47cdb378ff7f9ca7d33f899b9 Reviewed-on: https://pdfium-review.googlesource.com/32112 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Make CPDF_PageObjectHolder::m_iTransparency protected.Lei Zhang
Also initialize members in the header. Change-Id: Id814c4c5042c9d4989fa92b78f68c17f4949f09d Reviewed-on: https://pdfium-review.googlesource.com/32111 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Add some getters for CPDF_PageObjectHolder.Lei Zhang
Change-Id: I3fe99ecb17d37f893ce5d0d59219c82ee31fe7ea Reviewed-on: https://pdfium-review.googlesource.com/32110 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Move codepage tables from cpdf_document.cpp to fx_codepage.cppTom Sepez
Avoids scrolling past this noise when looking at document code. No functional changes. Change-Id: I4684a8cf4d8894c699cd1c980bc5fc41b2179ad1 Reviewed-on: https://pdfium-review.googlesource.com/32156 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Use unowned ptr for CPDF_Page::m_pView.Tom Sepez
Change-Id: I9d87cefc18a3a468e1bec797bc7711194f6444c7 Reviewed-on: https://pdfium-review.googlesource.com/32155 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-07Initialize CPDF_RenderStatus members in the header.Lei Zhang
Also move static private members into the .cpp file. Change-Id: Idbbdc7c78ac4199968888466caa20c58a5653dfd Reviewed-on: https://pdfium-review.googlesource.com/32151 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Use checked large integer in ContinueQuickStretchchromium/3424Ryan Harrison
This existing code has the potential for an integer overflow in it. When overflow occurs in this function scaling may partially succeed. This is due to how out of range values are being clamped, which implicitly swallows the overflow. This CL changes the calculation to be performed in a 64-bit space and then attempts to down cast it back to 32-bit space at the end. Because there are multiple steps it is possible for an intermediate value to cause an overflow in 32 bit space, but the final value to be valid. If the downcast is not possible then the stretch operation is failed. An existing test case has been updated, since it encoded an incorrect result. BUG=chromium:839245 Change-Id: I637cc1e2d6c6c2d5394599104f76352c20ead021 Reviewed-on: https://pdfium-review.googlesource.com/32056 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-03Add CPDF_Page::Extension::GetDocExtension()Tom Sepez
In turn, add CPDF_Document::Extension::GetPDFDoc() so that we can use the abstract return type in more places. Mark an internal-only cpdfxfa_context method as private while we're at it. Change-Id: I08e64f4b9438bf2f731c3a37cf2a41152bbbd8fa Reviewed-on: https://pdfium-review.googlesource.com/31916 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-03Make GetPDFDocument return a CPDF_Docment*, not void*.Tom Sepez
Small oversight. Gets type safety. Change-Id: I669c2c990fdf9013f4bc4835738132ed76e734b8 Reviewed-on: https://pdfium-review.googlesource.com/31991 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-02Add CPDF_Document::Extension::GetPageCount()Tom Sepez
Another virtual API at the CPDF layer, to avoid a compile time ifdef XFA. Change-Id: Ia95c4d3b3d3b773aaf45c49ebcadff6b16ca18c6 Reviewed-on: https://pdfium-review.googlesource.com/31910 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-01Add CPDF_Document::Extension::DeletePage()Tom Sepez
Replaces one compile-time #ifdef XFA with a dynamic check and a call through a virtual API that prevents the CPDF code from knowing anything about the XFA code. Change-Id: If0ff9b6918b908b3eac824fe1d525c6d4f7316e7 Reviewed-on: https://pdfium-review.googlesource.com/31890 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Avoid perpetual spins for parserless CPDF_PagesTom Sepez
This is an obstacle to introducing dummy CPDF_Pages to underly all CPDFXFA_Pages, since we would then have a parserless CPDF_Page, whose parse could never succeed or fail. The m_ParseState would never change, and if the caller dutifully recalls us until that changes, we hang. Small separate CL since it might impact non-XFA cases unexpectedly. Change-Id: I002064e5d4caa44935f50bde0f3b00e3b8cb0bfe Reviewed-on: https://pdfium-review.googlesource.com/31850 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Make FPDF_Document always be CPDF_Document.Tom Sepez
Greatly minimize the impact between going back and forth from XFA being on/off, so that XFA case is just an extension beyond the non-XFA data structures we've shipped for years, instead of being a complete replacement of them. Change-Id: I6c98206e0ec99ea443547a4931eba912b1764d54 Reviewed-on: https://pdfium-review.googlesource.com/31690 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-01Introduce the concept of CPDF_Page::ExtensionTom Sepez
Similar tp CPDF_Document::Extension, this is a base type for fpdfsdk/ to use to improve layering. While we're at it, make pages point to documents to prove they don't outlive them. Another small step towards not passing XFA objects across FPDF. Change-Id: Idcee9da3a18c06331fa56f3d6c188e4ce27d34f2 Reviewed-on: https://pdfium-review.googlesource.com/31631 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-27Avoid potential duplicate unique_ptr to CPDF_Document from CPDFXA_Context.Tom Sepez
Should FPDFDocumentFromCPDFDocument() be called several times under XFA, we may WrapUnique() the document several times. So cache a pointer back from CPDF_Document to CPDFXFA_Context to avoid this. Because of layering, introduce a placeholder type CPDF_Document::Extension. This is actually the first step in some larger XFA ownership cleanup, but makes a nice standalone CL around the one particular issue. Change-Id: I4be326ddb1a5fae7339e6ed6745dd551b1374b53 Reviewed-on: https://pdfium-review.googlesource.com/31570 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
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