symbols.h

#pragma once

#include <Dbghelp.h>
#pragma comment(lib, "Dbghelp.lib")

class Symbols {
public:
	Symbols()
		: m_process(GetCurrentProcess())
	{
		::SymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS);
		::SymInitialize(m_process, NULL, TRUE);
	}
	~Symbols()
	{
		::SymCleanup(m_process);
	}

	uintptr_t operator [](const wchar_t* name) {
		SymbolInfo info;
		if (!::SymFromNameW(m_process, name, info))
		{
			return 0;
		}
		return static_cast<uintptr_t>(info->Address);
	}

private:
	class SymbolInfo {
	public:
		SymbolInfo() {
			(*this)->SizeOfStruct = sizeof(SYMBOL_INFOW);
			(*this)->MaxNameLen = MAX_SYM_NAME;
		}
		operator PSYMBOL_INFOW () {
			return static_cast<PSYMBOL_INFOW>(static_cast<void*>(m_buffer));
		}
		PSYMBOL_INFOW operator ->() {
			return *this;
		}
	private:
		ULONG64 m_buffer[(sizeof(SYMBOL_INFOW) + MAX_SYM_NAME * sizeof(wchar_t) + sizeof(ULONG64) - 1) / sizeof(ULONG64)];
	};

	HANDLE m_process;
};