signarure.hpp

#pragma once
 
#include <cstdint>
#include <string>
#include <vector>
 
#include "plugify/value_type.hpp"
#include "plg/inplace_vector.hpp"
 
namespace plugify {
    enum class CallConv : uint8_t {
        CDecl = 0,  
        StdCall = 1,      
        FastCall = 2,     
        VectorCall = 3,   
        ThisCall = 4,     
        RegParm1 = 5,     
        RegParm2 = 6,     
        RegParm3 = 7,     
        LightCall2 = 16,  
        LightCall3 = 17,  
        LightCall4 = 18,  
        SoftFloat = 30,   
        HardFloat = 31,   
        X64SystemV = 32,  
        X64Windows = 33,  
        MaxValue = X64Windows  
    };
 
    struct Signature {
        inline static const size_t kMaxFuncArgs = 32;
        inline static const uint8_t kNoVarArgs = 0xffU;
 
        CallConv callConv{CallConv::CDecl}; 
        ValueType retType{ValueType::Void}; 
        uint8_t varIndex{kNoVarArgs};  
        std::inplace_vector<ValueType, kMaxFuncArgs> argTypes{}; 
 
        void AddArg(ValueType type) {
            argTypes.push_back(type);
        }
 
        size_t ArgCount() const noexcept {
            return argTypes.size();
        }
 
        bool HasRet() const noexcept {
            return retType != ValueType::Void;
        }
 
        void SetRet(ValueType type) noexcept {
            retType = type;
        }
    };
 
    struct CallName {
        static constexpr std::string_view CDecl = "cdecl";
        static constexpr std::string_view StdCall = "stdcall";
        static constexpr std::string_view FastCall = "fastcall";
        static constexpr std::string_view VectorCall = "vectorcall";
        static constexpr std::string_view ThisCall = "thiscall";
        static constexpr std::string_view RegParm1 = "regparm1";
        static constexpr std::string_view RegParm2 = "regparm2";
        static constexpr std::string_view RegParm3 = "regparm3";
        static constexpr std::string_view LightCall2 = "lightcall2";
        static constexpr std::string_view LightCall3 = "lightcall3";
        static constexpr std::string_view LightCall4 = "lightcall4";
        static constexpr std::string_view SoftFloat = "softfloat";
        static constexpr std::string_view HardFloat = "hardfloat";
        static constexpr std::string_view X64SystemV = "x64systemv";
        static constexpr std::string_view X64Windows = "x64windows";
        static constexpr std::string_view MaxValue = "maxvalue";
    };
}