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45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
#ifndef _LIBRW_CASTS_HPP_
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#define _LIBRW_CASTS_HPP_
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#include <cstring> // memcpy
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#include <string>
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#include "rw/debug.hpp"
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//Based on https://gist.github.com/socantre/3472964
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template <class Dest, class Source>
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inline Dest bit_cast(Source const &source) {
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Dest dest;
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std::memcpy(&dest, &source, sizeof(Dest));
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return dest;
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}
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template <class T, class S>
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inline T lexical_cast(const S& s);
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template <class T, class S>
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inline T lexical_cast(const S& s, int base);
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template <>
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inline int lexical_cast(const std::string& source, int base) {
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char* end = nullptr; //for errors handling
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int result = std::strtol(source.c_str(), &end, base);
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RW_CHECK(end != source.c_str(), "Problem with conversion " << *end << " to int");
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return result;
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}
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template <>
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inline int lexical_cast(const std::string& source) {
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return lexical_cast<int>(source, 10);
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}
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template <>
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inline float lexical_cast(const std::string& source) {
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char* end = nullptr; //for errors handling
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float result = std::strtof(source.c_str(), &end);
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RW_CHECK(end != source.c_str(), "Problem with conversion " << *end << " to float");
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return result;
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}
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#endif
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