From 61f1d62daa127097e4719575bd0ff652abcebad0 Mon Sep 17 00:00:00 2001 From: Tom Sepez Date: Thu, 13 Sep 2018 21:40:49 +0000 Subject: Reland "Introduce FX_Number class as a replacement for FX_atonum()." This reverts commit 29e180342e18873babf1c74f7c5c056f90a191b0. Reason for revert: probably harmless Original change's description: > Revert "Introduce FX_Number class as a replacement for FX_atonum()." > > This reverts commit a5d7ad3aa8feb08a14b5cca173d673054c1ade23. > > Reason for revert: Speculative revert to get back before flake. > > Original change's description: > > Introduce FX_Number class as a replacement for FX_atonum(). > > > > The issue with FX_atonum() is that it doesn't return any information > > about whether it range-checked its integer values as a signed or > > unsigned type, even though it knows this as part of its processing. > > > > Rather than adding another out parameter to that function, create > > a class to hold all this information together. > > > > This is the first place things went astray while diagnosing > > bug 882959, in that a large positive value was cast to float as a > > negative value. Unfortunately, this doesn't affect the related bug, > > but is a step in the right direction. > > > > Change-Id: I0977ec8fccf85e2632a962507bdd30a1cbe6d33c > > Reviewed-on: https://pdfium-review.googlesource.com/42353 > > Reviewed-by: Lei Zhang > > Commit-Queue: Tom Sepez > > TBR=thestig@chromium.org,tsepez@chromium.org > > Change-Id: Ia56270c3daa80408fc2b23eb4384a77f03f45b82 > Reviewed-on: https://pdfium-review.googlesource.com/42392 > Reviewed-by: Tom Sepez > Commit-Queue: Tom Sepez TBR=thestig@chromium.org,tsepez@chromium.org Change-Id: I83c37aa3040a8890f2117753f19ab1d452d411e7 Reviewed-on: https://pdfium-review.googlesource.com/42410 Commit-Queue: Tom Sepez Reviewed-by: Tom Sepez --- core/fpdfapi/parser/cpdf_number.cpp | 24 ++++++++++++------------ core/fpdfapi/parser/cpdf_number.h | 11 ++++------- 2 files changed, 16 insertions(+), 19 deletions(-) (limited to 'core/fpdfapi/parser') diff --git a/core/fpdfapi/parser/cpdf_number.cpp b/core/fpdfapi/parser/cpdf_number.cpp index b75ce0766a..23c2609e25 100644 --- a/core/fpdfapi/parser/cpdf_number.cpp +++ b/core/fpdfapi/parser/cpdf_number.cpp @@ -8,14 +8,13 @@ #include "core/fxcrt/fx_stream.h" #include "third_party/base/ptr_util.h" -CPDF_Number::CPDF_Number() : m_bInteger(true), m_Integer(0) {} +CPDF_Number::CPDF_Number() {} -CPDF_Number::CPDF_Number(int value) : m_bInteger(true), m_Integer(value) {} +CPDF_Number::CPDF_Number(int value) : m_Number(value) {} -CPDF_Number::CPDF_Number(float value) : m_bInteger(false), m_Float(value) {} +CPDF_Number::CPDF_Number(float value) : m_Number(value) {} -CPDF_Number::CPDF_Number(const ByteStringView& str) - : m_bInteger(FX_atonum(str, &m_Integer)) {} +CPDF_Number::CPDF_Number(const ByteStringView& str) : m_Number(str) {} CPDF_Number::~CPDF_Number() {} @@ -24,16 +23,17 @@ CPDF_Object::Type CPDF_Number::GetType() const { } std::unique_ptr CPDF_Number::Clone() const { - return m_bInteger ? pdfium::MakeUnique(m_Integer) - : pdfium::MakeUnique(m_Float); + return m_Number.IsInteger() + ? pdfium::MakeUnique(m_Number.GetSigned()) + : pdfium::MakeUnique(m_Number.GetFloat()); } float CPDF_Number::GetNumber() const { - return m_bInteger ? static_cast(m_Integer) : m_Float; + return m_Number.GetFloat(); } int CPDF_Number::GetInteger() const { - return m_bInteger ? m_Integer : static_cast(m_Float); + return m_Number.GetSigned(); } bool CPDF_Number::IsNumber() const { @@ -49,12 +49,12 @@ const CPDF_Number* CPDF_Number::AsNumber() const { } void CPDF_Number::SetString(const ByteString& str) { - m_bInteger = FX_atonum(str.AsStringView(), &m_Integer); + m_Number = FX_Number(str.AsStringView()); } ByteString CPDF_Number::GetString() const { - return m_bInteger ? ByteString::FormatInteger(m_Integer) - : ByteString::FormatFloat(m_Float); + return m_Number.IsInteger() ? ByteString::FormatInteger(m_Number.GetSigned()) + : ByteString::FormatFloat(m_Number.GetFloat()); } bool CPDF_Number::WriteTo(IFX_ArchiveStream* archive, diff --git a/core/fpdfapi/parser/cpdf_number.h b/core/fpdfapi/parser/cpdf_number.h index b5faf82bb2..724ae9f1f1 100644 --- a/core/fpdfapi/parser/cpdf_number.h +++ b/core/fpdfapi/parser/cpdf_number.h @@ -10,6 +10,7 @@ #include #include "core/fpdfapi/parser/cpdf_object.h" +#include "core/fxcrt/fx_number.h" #include "core/fxcrt/fx_string.h" #include "core/fxcrt/fx_system.h" @@ -34,14 +35,10 @@ class CPDF_Number final : public CPDF_Object { bool WriteTo(IFX_ArchiveStream* archive, const CPDF_Encryptor* encryptor) const override; - bool IsInteger() const { return m_bInteger; } + bool IsInteger() const { return m_Number.IsInteger(); } - protected: - bool m_bInteger; - union { - int m_Integer; - float m_Float; - }; + private: + FX_Number m_Number; }; inline CPDF_Number* ToNumber(CPDF_Object* obj) { -- cgit v1.2.3