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nb::Error objects now working

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This commit is contained in:
NaifBanana 2026-04-18 18:33:33 -05:00
parent 18de24649a
commit 0b5189dd2c
5 changed files with 111 additions and 110 deletions
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164
engine/NBCore/Errors.hpp
View File

@ -1,11 +1,11 @@
#pragma once
#include <memory>
#ifndef _NB_ERROR
#define _NB_ERROR
#include <exception>
#include <iostream>
#include <memory>
#include <string>
#include <string_view>
#include <type_traits>
#include "TypeTraits.hpp"
#include <unordered_map>
@ -34,41 +34,86 @@ typedef std::unordered_map<unsigned int, const char*> ErrorCodeMap;
template <typename T>
using has_type = decltype(T::type);
template<typename StringType, typename ErrorType>
struct NBErrorWhatString;
template<class ErrorType = NoneType>
class ErrorBase;
class ErrorBase_what_str_impl : public std::exception {
template<>
class ErrorBase<NoneType> : public std::exception {
public:
virtual std::string what_str_impl() const = 0;
virtual std::wstring what_wstr_impl() const = 0;
};
template<class ErrorType>
class ErrorBase : public ErrorBase_what_str_impl {
public:
ErrorBase(const ErrorBase&) = default;
ErrorBase& operator=(const ErrorBase&) = delete;
template<typename StringType = std::string>
inline const StringType what_str() const noexcept {
return NBErrorWhatString<StringType,ErrorType>::what(*this);
}
virtual const char* what() const noexcept override final {
const std::string& ret = what_str();
return ret.c_str();
}
static const std::string type;
static const ErrorCodeMap ErrorMessages;
const unsigned int code;
const std::string msg;
const std::shared_ptr<const std::exception> trace;
const bool traceIsNBError;
virtual inline std::string str() const noexcept = 0;
virtual const char* what() const noexcept override final {
const std::string& ret = str();
return ret.c_str();
}
protected:
ErrorBase() = delete;
template <
typename TraceType = std::exception,
std::enable_if_t<std::is_base_of_v<std::exception, TraceType>, bool> = true
>
ErrorBase(
const unsigned int& code_,
const std::string& msg_,
const std::shared_ptr<TraceType> trace_,
const unsigned int& line_,
std::string filename_
) noexcept :
code(code_),
msg(msg_),
trace{std::dynamic_pointer_cast<std::exception>(trace_)},
traceIsNBError( trace_ ? is_detected<has_type, TraceType>::value : false)
{
static_assert(std::is_base_of<std::exception, TraceType>::value,
"`trace_` must be a pointer to a child object of std::exception."
);
}
};
template <class ErrorType>
class ErrorBase : public ErrorBase<NoneType> {
using Base = ErrorBase<NoneType>;
public:
ErrorBase(const ErrorBase&) = default;
ErrorBase& operator=(const ErrorBase&) = delete;
virtual inline std::string str() const noexcept override {
std::string ret = msg;
if (trace) {
const std::string replace = nb::NEWLINE+" ";
std::string trace_msg;
if (traceIsNBError) {
trace_msg = std::static_pointer_cast<const ErrorBase>(trace)->str();
trace_msg = std::string(std::string_view(trace_msg).substr(
0, trace_msg.length()-nb::NEWLINE.length()
));
} else {
trace_msg = std::string(trace->what());
}
ret += replace + "Trace: " + find_and_replace<std::string>(
trace_msg,
nb::NEWLINE,
replace
);
}
return ret + nb::NEWLINE;
}
static const std::string type;
static const ErrorCodeMap ErrorMessages;
using Base::code;
using Base::msg;
using Base::trace;
using Base::traceIsNBError;
protected:
using Base::Base;
template <
typename TraceType = std::exception,
@ -80,12 +125,13 @@ protected:
const TraceType* trace_=nullptr,
unsigned int line_=0,
std::string filename_=""
) noexcept :
code(code_),
msg(msg_),
trace{trace_ ? std::make_shared<TraceType>(*trace_) : nullptr},
traceIsNBError( trace_ ? is_detected<has_type, TraceType>::value : false)
{
) : Base(
code_,
msg_,
trace_ ? std::make_shared<TraceType>(*trace_) : nullptr,
line_,
filename_
) {
static_assert(std::is_same<const std::unordered_map<unsigned int, const char*>, decltype(ErrorType::ErrorMessages)>::value,
"const std::unordered_map<unsigned int, const char*> ErrorMessages must be "
"a class member."
@ -97,9 +143,6 @@ protected:
static_assert(std::is_same<const std::string, decltype(ErrorType::type)>::value,
"const std::string type must be a class member."
);
static_assert(std::is_base_of<std::exception, TraceType>::value,
"`trace_` must be a pointer to a child object of std::exception."
);
}
template <
@ -159,55 +202,12 @@ protected:
line_,
filename_
) {}
std::string what_str_impl() const override final { return what_str(); }
std::wstring what_wstr_impl() const override final { return what_str<std::wstring>(); }
};
template <typename ErrorType>
const std::string ErrorBase<ErrorType>::type = ErrorType::type;
template <typename ErrorType>
const ErrorCodeMap ErrorBase<ErrorType>::ErrorMessages = ErrorType::ErrorMessages;
template<typename ErrorType>
struct NBErrorWhatString<std::wstring, ErrorType> {
inline static const std::wstring what(const ErrorBase<ErrorType>& err) noexcept {
std::wstring ret = nb::str_to_wstr(err.msg);
const std::wstring replace = nb::WNEWLINE + L"┗-";
if (err.trace) {
std::wstring trace_msg;
if (err.traceIsNBError) {
// How can I access
trace_msg = std::static_pointer_cast<const ErrorBase_what_str_impl>(err.trace)->what_wstr_impl();
} else {
trace_msg = nb::str_to_wstr(std::string(err.trace->what()));
}
trace_msg = find_and_replace<std::wstring>(trace_msg, L"┗", L"-");
ret += replace + find_and_replace<std::wstring>(
trace_msg,
nb::WNEWLINE,
replace
);
}
return ret;
}
};
template<typename ErrorType>
struct NBErrorWhatString<std::string, ErrorType> {
inline static const std::string what(const ErrorBase<ErrorType>& err) noexcept {
std::string ret = err.msg;
const std::string replace = nb::NEWLINE+" ";
if (err.trace) {
ret += replace + find_and_replace(
std::string(err.trace->what()),
nb::NEWLINE,
replace
);
}
return ret;
}
};
template <class ErrorType = NoneType>
class Error;
@ -221,6 +221,7 @@ public:
template <typename... Args>
Error(Args... T) : Base(T...) {}
using Base::str;
using Base::what;
using Base::code;
using Base::msg;
@ -242,6 +243,7 @@ public:
GENERAL, UNDEFINED, BADERRORCODE
};
using Base::str;
using Base::what;
using Base::code;
using Base::msg;

5
engine/NBCore/TypeTraits.hpp
View File

@ -37,11 +37,6 @@ template <
>
using is_detected = typename detail::detector<NoneType, void, Op, Args...>::value;
template <typename Stream, typename... Args>
void stream(Stream& s, Args&&... args) {
(s << ... << args);
}
/*template<std::size_t N=0, typename Func, typename... Pack>
inline typename std::enable_if<N==sizeof...(Pack), void>::type
ForEach(std::tuple<Pack...>&, Func) {}

36
engine/NBCore/Utils.hpp
View File

@ -1,16 +1,16 @@
#pragma once
#include <cstdlib>
#include <type_traits>
#ifndef _NB_CORE_TYPES
#define _NB_CORE_TYPES
#include <iostream>
#include <string>
#include <type_traits>
namespace nb {
#ifdef _NB_TARGET_WINDOWS
const std::string NEWLINE = "\r\n";
const std::wstring WNEWLINE = L"\r\n";
const std::string NEWLINE = "\n";
const std::wstring WNEWLINE = L"\n";
#endif // _NB_TARGET_WINDOWS
#ifdef _NB_TARGET_LINUX
const std::string NEWLINE = "\n";
@ -18,14 +18,14 @@ namespace nb {
#endif // _NB_TARGET_LINUX
template<typename T>
std::enable_if_t<std::is_convertible_v<const T&, std::string>, std::wstring> str_to_wstr(const T& in) {
std::enable_if_t<std::is_convertible_v<T, std::string>, std::wstring> str_to_wstr(T in) {
std::string str(in);
std::wstring ret(str.begin(), str.end());
return ret;
}
template<typename T>
std::enable_if_t<std::is_convertible_v<const T&, std::wstring>, std::string> wstr_to_str(const T& in) {
std::enable_if_t<std::is_convertible_v<T, std::wstring>, std::string> wstr_to_str(T in) {
std::wstring wstr(in);
std::size_t wstrlen = wstr.length();
char* c_str= new char[wstrlen];
@ -35,11 +35,25 @@ std::enable_if_t<std::is_convertible_v<const T&, std::wstring>, std::string> wst
return ret;
}
template <typename Stream, typename... Args>
void stream(Stream& s, Args&&... args);
template <typename Stream, typename... Args>
void stream(Stream& s, Args&&... args) {
(s << ... << args);
}
template<typename... Args>
void term(Args&&... args) { stream(std::cout, args..., nb::NEWLINE); }
template<typename... Args>
void wterm(Args&&... args) { stream(std::wcout, args..., nb::WNEWLINE); }
template <typename T = std::string, typename A, typename B, typename C>
T find_and_replace(
const A& original,
const B& find,
const C& replace
A original,
B find,
C replace
) {
const T& original_t = T(original);
const T& find_t = T(find);
@ -50,10 +64,8 @@ T find_and_replace(
std::size_t find_len = find_t.length();
std::size_t replace_len = replace_t.length();
std::size_t currpos = 0;
std::size_t lastpos = 0;
while(true) {
lastpos = currpos;
currpos = original_t.find(find_t, lastpos);
currpos = ret.find(find_t, currpos);
if (currpos == T::npos) {
break;
}

13
engine/NBCore/tests/testErrors.cpp
View File

@ -3,9 +3,8 @@
#include <gtest/gtest.h>
#include "Errors.hpp"
#include <iostream>
#include <string>
#include "TypeTraits.hpp"
#include "Utils.hpp"
using namespace nb;
@ -36,12 +35,6 @@ const ErrorCodeMap TestError::ErrorMessages{
TEST(ErrorTest, Test) {
auto err = TestError(0, TestError(1));
nb::stream(std::cout,
"len string: ", err.what_str().length(), "\n",
"len wstring: ", err.what_str<std::wstring>().length(), "\n"
);
nb::stream(std::wcout,
err.what_str<std::wstring>(), L"\n"
);
auto err = TestError(0, TestError(1, TestError(2, TestError(3, TestError(2)))));
ASSERT_STREQ(err.what(), "Hey!\n Trace: How\n Trace: You\n Trace: Doin\n Trace: You\n");
}

1
engine/NBCore/tests/testUtils.cpp
View File

@ -1,4 +1,3 @@
#include <iterator>
#define CODE_ERROR_LOCATIONS
#include <gtest/gtest.h>