diff options
author | Egor Tensin <Egor.Tensin@gmail.com> | 2020-01-15 03:58:41 +0300 |
---|---|---|
committer | Egor Tensin <Egor.Tensin@gmail.com> | 2020-01-15 03:58:41 +0300 |
commit | a9741c9cadcef7752ec0e1bcc0e1aba580477a5e (patch) | |
tree | 08e028e8596739f88987499ca2e30f1b6781a144 /src | |
parent | refactoring (diff) | |
download | winapi-debug-a9741c9cadcef7752ec0e1bcc0e1aba580477a5e.tar.gz winapi-debug-a9741c9cadcef7752ec0e1bcc0e1aba580477a5e.zip |
split symbol.hpp
Diffstat (limited to 'src')
-rw-r--r-- | src/symbol.cpp | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/symbol.cpp b/src/symbol.cpp new file mode 100644 index 0000000..98ec427 --- /dev/null +++ b/src/symbol.cpp @@ -0,0 +1,57 @@ +// Copyright (c) 2020 Egor Tensin <Egor.Tensin@gmail.com> +// This file is part of the "PDB repository" project. +// For details, see https://github.com/egor-tensin/pdb-repo. +// Distributed under the MIT License. + +#include "pdb/all.hpp" + +#include <SafeInt.hpp> + +#include <DbgHelp.h> +#include <Windows.h> + +#include <cstddef> +#include <cstring> +#include <stdexcept> + +namespace pdb { +namespace { + +std::size_t calc_size(const SymbolInfo::Impl& impl) { + try { + return SafeInt<std::size_t>{impl.SizeOfStruct} + impl.NameLen - 1; + } catch (const SafeIntException&) { + throw std::runtime_error{"invalid SYMBOL_INFO size"}; + } +} + +unsigned long cast_line_number(DWORD impl) { + unsigned long dest = 0; + + if (!SafeCast(impl, dest)) + throw std::runtime_error{"invalid line number"}; + + return dest; +} + +} // namespace + +SymbolInfo::SymbolInfo() : buffer{}, impl{*reinterpret_cast<Impl*>(buffer.data())} { + buffer.fill(0); + impl.SizeOfStruct = sizeof(Impl); + impl.MaxNameLen = MAX_SYM_NAME; +} + +SymbolInfo::SymbolInfo(const Impl& impl) : SymbolInfo{} { + if (impl.SizeOfStruct != sizeof(impl)) + throw std::runtime_error{"invalid SYMBOL_INFO.SizeOfStruct"}; + const auto impl_size = calc_size(impl); + if (impl_size > buffer.size()) + throw std::runtime_error{"SYMBOL_INFO is too large"}; + std::memcpy(buffer.data(), &impl, impl_size); +} + +LineInfo::LineInfo(const Impl& impl) + : file_path{impl.FileName}, line_number{cast_line_number(impl.LineNumber)} {} + +} // namespace pdb |