sid/NazaraEngine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Core: Rework ParameterFile

Browse Source 
Improve parsing and usage
This commit is contained in:
SirLynix
2023-11-17 11:57:05 +01:00
parent 592845e353
commit ddc8cc6797
4 changed files with 409 additions and 238 deletions
Download Patch File Download Diff File Expand all files Collapse all files

86
include/Nazara/Core/ParameterFile.hpp
View File

@@ -16,34 +16,41 @@
#include <functional>
#include <string>
#include <type_traits>
#include <variant>
namespace Nz
{
class ParameterFileSection;
class Stream;
// TOOD: Move to NazaraUtils
template<typename T>
concept Functor = IsFunctor_v<T>;
class NAZARA_CORE_API ParameterFile
{
friend ParameterFileSection;
public:
inline ParameterFile(Stream& stream);
ParameterFile(const ParameterFile&) = delete;
ParameterFile(ParameterFile&&) = delete;
~ParameterFile() = default;
template<typename... Args> void Block(Args&&... args);
template<typename... Args> void Handle(Args&&... args);
template<typename... Args> void Parse(Args&&... args);
ParameterFile& operator=(const ParameterFile&) = delete;
ParameterFile& operator=(ParameterFile&&) = delete;
struct Keyword
struct Identifier
{
std::string str;
std::string value;
};
struct Array_t {};
struct List_t {};
struct OptionalBlock_t {};
static constexpr Array_t Array{};
static constexpr List_t List{};
static constexpr OptionalBlock_t OptionalBlock{};
private:
@@ -55,28 +62,59 @@ namespace Nz
ValueHandler handler;
};
struct ClosingCurlyBracket {};
struct EndOfStream {};
struct OpenCurlyBracket {};
struct String
{
std::string value; //< has to be a string because of text parsing
};
using Token = std::variant<std::monostate, ClosingCurlyBracket, EndOfStream, Identifier, OpenCurlyBracket, String>;
Token Advance();
void ConsumeChar(std::size_t count = 1);
template<typename EndToken, typename... Args> void HandleInner(Args&&... args);
Token& PeekToken();
char PeekCharacter(std::size_t advance = 1);
template<typename T> T& Peek();
template<typename T> T Read();
template<typename T> T ReadValue();
// Handlers
template<std::size_t N, typename T, typename... Rest> ValueHandler BuildBlockHandler(FixedVector<KeyValue, N>* keyValues, T* value, Rest&&... rest);
template<std::size_t N, Functor T, typename... Rest> ValueHandler BuildBlockHandler(FixedVector<KeyValue, N>* keyValues, T&& handler, Rest&&... rest);
template<std::size_t N, typename O, typename... Args, typename... Rest> ValueHandler BuildBlockHandler(FixedVector<KeyValue, N>* keyValues, void(O::* method)(Args...), O* object, Rest&&... rest);
template<std::size_t N, typename... Args, typename... Rest> ValueHandler BuildBlockHandler(FixedVector<KeyValue, N>* keyValues, FunctionRef<void(Args...)> handler, Rest&&... rest);
template<std::size_t N, typename K, typename... Rest> void BuildKeyValues(FixedVector<KeyValue, N>* keyValues, K&& key, Rest&&... rest);
template<typename V, typename... Rest> ValueHandler GetSingleHandler(V&& value, Rest&&... rest);
template<typename T> static std::string_view BuildBlockKey(T&& key);
template<typename... Args> static ValueHandler BuildBlockHandler(ParameterFile& file, ValueHandler handler);
template<typename T> static ValueHandler BuildBlockHandler(ParameterFile& file, T* value);
template<typename T> static ValueHandler BuildBlockHandler(ParameterFile& file, T&& handler, std::enable_if_t<IsFunctor_v<T>>* = nullptr);
template<typename... Args> static ValueHandler BuildBlockHandler(ParameterFile& file, FunctionRef<void(Args...)> handler);
template<std::size_t N, typename K, typename V, typename... Rest> static void BuildKeyValues(ParameterFile& file, FixedVector<KeyValue, N>& keyValues, K&& key, V&& value, Rest&&... rest);
template<typename V, typename... Rest> static ValueHandler GetSingleHandler(ParameterFile& file, V&& value, Rest&&... rest);
template<typename T> static constexpr bool ShouldIgnoreImpl = std::is_same_v<T, List_t> || std::is_same_v<T, OptionalBlock_t>;
template<typename T> static constexpr bool ShouldIgnore = ShouldIgnoreImpl<std::decay_t<T>>;
template<typename... Args> void HandleInner(std::string_view listEnd, Args&&... args);
template<typename T> static T ReadValue(ParameterFile& file);
template<typename T> static constexpr bool ShouldIgnoreImpl = std::is_same_v<T, Array_t> || std::is_same_v<T, OptionalBlock_t>;
template<typename T> static constexpr bool ShouldIgnore = ShouldIgnoreImpl<std::decay_t<std::remove_const_t<T>>>;
bool EnsureLine(bool peek = false);
std::string ReadKeyword(bool peek = false);
std::string ReadString();
std::string m_currentLine;
std::size_t m_bufferOffset;
std::string m_buffer;
Stream& m_stream;
Token m_nextToken;
unsigned int m_currentLine;
};
class ParameterFileSection
{
friend ParameterFile;
public:
ParameterFileSection(const ParameterFileSection&) = default;
template<typename... Args> void Block(Args&&... args);
private:
inline ParameterFileSection(ParameterFile& file);
ParameterFile& m_file;
};
}