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dxvk/src/dxbc/dxbc_reader.h

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#pragma once
#include <cstddef>
#include <string>
#include "dxbc_tag.h"
namespace dxvk {
/**
* \brief DXBC bytecode reader
*
* Holds references to the shader byte code and
* provides methods to read
*/
class DxbcReader {
public:
DxbcReader(const char* data, size_t size)
: DxbcReader(data, size, 0) { }
auto readu8 () { return this->readNum<uint8_t> (); }
auto readu16() { return this->readNum<uint16_t>(); }
auto readu32() { return this->readNum<uint32_t>(); }
auto readu64() { return this->readNum<uint64_t>(); }
auto readi8 () { return this->readNum<int8_t> (); }
auto readi16() { return this->readNum<int16_t> (); }
auto readi32() { return this->readNum<int32_t> (); }
auto readi64() { return this->readNum<int64_t> (); }
auto readf32() { return this->readNum<float> (); }
auto readf64() { return this->readNum<double> (); }
template<typename T>
auto readEnum() {
using Tx = std::underlying_type_t<T>;
return static_cast<T>(this->readNum<Tx>());
}
DxbcTag readTag();
std::string readString();
void read(void* dst, size_t n);
void skip(size_t n);
DxbcReader clone(size_t pos) const;
DxbcReader resize(size_t size) const;
bool eof() const {
return m_pos >= m_size;
}
private:
DxbcReader(const char* data, size_t size, size_t pos)
: m_data(data), m_size(size), m_pos(pos) { }
const char* m_data = nullptr;
size_t m_size = 0;
size_t m_pos = 0;
template<typename T>
T readNum() {
T result;
this->read(&result, sizeof(result));
return result;
}
};
}