b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
//===-- LibCxxVector.cpp ----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// C Includes
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// C++ Includes
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// Other libraries and framework includes
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// Project includes
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#include "LibCxx.h"
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#include "lldb/Core/ConstString.h"
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#include "lldb/Core/ValueObject.h"
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#include "lldb/DataFormatters/FormattersHelpers.h"
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using namespace lldb;
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using namespace lldb_private;
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using namespace lldb_private::formatters;
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namespace lldb_private {
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namespace formatters {
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class LibcxxStdVectorSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
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public:
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LibcxxStdVectorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
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~LibcxxStdVectorSyntheticFrontEnd() override;
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size_t CalculateNumChildren() override;
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lldb::ValueObjectSP GetChildAtIndex(size_t idx) override;
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bool Update() override;
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bool MightHaveChildren() override;
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size_t GetIndexOfChildWithName(const ConstString &name) override;
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private:
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ValueObject *m_start;
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ValueObject *m_finish;
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CompilerType m_element_type;
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uint32_t m_element_size;
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};
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} // namespace formatters
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} // namespace lldb_private
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lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::
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LibcxxStdVectorSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
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: SyntheticChildrenFrontEnd(*valobj_sp), m_start(nullptr),
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m_finish(nullptr), m_element_type(), m_element_size(0) {
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if (valobj_sp)
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Update();
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}
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lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::
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~LibcxxStdVectorSyntheticFrontEnd() {
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// these need to stay around because they are child objects who will follow
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// their parent's life cycle
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// delete m_start;
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// delete m_finish;
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}
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size_t lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::
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CalculateNumChildren() {
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if (!m_start || !m_finish)
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return 0;
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uint64_t start_val = m_start->GetValueAsUnsigned(0);
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uint64_t finish_val = m_finish->GetValueAsUnsigned(0);
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if (start_val == 0 || finish_val == 0)
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return 0;
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if (start_val >= finish_val)
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return 0;
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size_t num_children = (finish_val - start_val);
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if (num_children % m_element_size)
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return 0;
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return num_children / m_element_size;
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}
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lldb::ValueObjectSP
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lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::GetChildAtIndex(
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size_t idx) {
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if (!m_start || !m_finish)
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return lldb::ValueObjectSP();
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uint64_t offset = idx * m_element_size;
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offset = offset + m_start->GetValueAsUnsigned(0);
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StreamString name;
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name.Printf("[%" PRIu64 "]", (uint64_t)idx);
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return CreateValueObjectFromAddress(name.GetData(), offset,
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m_backend.GetExecutionContextRef(),
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m_element_type);
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}
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bool lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::Update() {
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m_start = m_finish = nullptr;
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ValueObjectSP data_type_finder_sp(
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m_backend.GetChildMemberWithName(ConstString("__end_cap_"), true));
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if (!data_type_finder_sp)
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return false;
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data_type_finder_sp = data_type_finder_sp->GetChildMemberWithName(
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ConstString("__first_"), true);
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if (!data_type_finder_sp)
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return false;
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m_element_type = data_type_finder_sp->GetCompilerType().GetPointeeType();
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m_element_size = m_element_type.GetByteSize(nullptr);
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if (m_element_size > 0) {
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// store raw pointers or end up with a circular dependency
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m_start =
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m_backend.GetChildMemberWithName(ConstString("__begin_"), true).get();
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m_finish =
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m_backend.GetChildMemberWithName(ConstString("__end_"), true).get();
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}
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return false;
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}
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bool lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::
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MightHaveChildren() {
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return true;
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}
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size_t lldb_private::formatters::LibcxxStdVectorSyntheticFrontEnd::
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GetIndexOfChildWithName(const ConstString &name) {
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if (!m_start || !m_finish)
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return UINT32_MAX;
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return ExtractIndexFromString(name.GetCString());
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}
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lldb_private::SyntheticChildrenFrontEnd *
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lldb_private::formatters::LibcxxStdVectorSyntheticFrontEndCreator(
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CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
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return (valobj_sp ? new LibcxxStdVectorSyntheticFrontEnd(valobj_sp)
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: nullptr);
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}
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