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Removed unneeded constexpr library

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This commit is contained in:
Sebastian Messmer 2015-09-29 18:47:28 +02:00
parent 819e48b446
commit 04be739b2e
2 changed files with 0 additions and 112 deletions
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82
constexpr/const_string.h
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@ -1,82 +0,0 @@
#ifndef MESSMER_CPPUTILS_CONSTEXPR_CONST_STRING_H
#define MESSMER_CPPUTILS_CONSTEXPR_CONST_STRING_H
#include <cstring>
#include <string>
#include <iostream>
#include "impl/digit_parser.h"
namespace cpputils {
class const_string {
public:
constexpr const_string(const char *str) : const_string(str, strlen(str)) { }
constexpr unsigned int size() const {
return _size;
}
constexpr char operator[](unsigned int index) const {
return (index < size()) ? _str[index] : throw std::logic_error("Index out of bounds");
}
constexpr const_string dropPrefix(unsigned int prefixSize) const {
return substr(prefixSize, _size - prefixSize);
}
constexpr const_string dropSuffix(unsigned int suffixSize) const {
return substr(0, _size - suffixSize);
}
constexpr const_string substr(unsigned int start, unsigned int count) const {
return (start + count <= size()) ? const_string(_str + start, count)
: throw std::logic_error("Substring out of bounds");
}
constexpr unsigned int sizeOfUIntPrefix() const {
return _hasUIntPrefix() ? (1 + dropPrefix(1).sizeOfUIntPrefix()) : 0;
}
constexpr unsigned int parseUIntPrefix() const {
return _hasUIntPrefix() ? _parseUIntBackwards(_str + sizeOfUIntPrefix() - 1, sizeOfUIntPrefix())
: throw std::logic_error("Not a valid number");
}
constexpr const_string dropUIntPrefix() const {
return _hasUIntPrefix() ? dropPrefix(1).dropUIntPrefix() : *this;
}
constexpr bool operator==(const const_string &rhs) const {
return _size == rhs._size && 0 == memcmp(_str, rhs._str, _size);
}
constexpr bool operator!=(const const_string &rhs) const {
return !operator==(rhs);
}
std::string toStdString() const {
return std::string(_str, _size);
}
private:
constexpr const_string(const char *str, unsigned int size) : _str(str), _size(size) { }
static constexpr unsigned int _parseUIntBackwards(const char *input, unsigned int numDigits) {
return (numDigits == 0) ? 0 : (digit_parser::parseDigit(*input) +
10 * _parseUIntBackwards(input - 1, numDigits - 1));
}
constexpr bool _hasUIntPrefix() const {
return size() > 0 && digit_parser::isDigit(_str[0]);
}
const char *_str;
unsigned int _size;
};
std::ostream &operator<<(std::ostream &stream, const const_string &str) {
stream << str.toStdString();
return stream;
}
}
#endif

30
constexpr/impl/digit_parser.h
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#ifndef MESSMER_CPPUTILS_CONSTEXPR_DIGIT_PARSER_H
#define MESSMER_CPPUTILS_CONSTEXPR_DIGIT_PARSER_H
#include <stdexcept>
namespace cpputils {
class digit_parser {
public:
static constexpr bool isDigit(char digit) {
return digit == '0' || digit == '1' || digit == '2' || digit == '3' || digit == '4' || digit == '5' ||
digit == '6' || digit == '7' || digit == '8' || digit == '9';
}
static constexpr unsigned char parseDigit(char digit) {
return (digit == '0') ? 0 :
(digit == '1') ? 1 :
(digit == '2') ? 2 :
(digit == '3') ? 3 :
(digit == '4') ? 4 :
(digit == '5') ? 5 :
(digit == '6') ? 6 :
(digit == '7') ? 7 :
(digit == '8') ? 8 :
(digit == '9') ? 9 :
throw std::logic_error("Not a valid digit");
}
};
}
#endif