thirdparty-ArduinoJson/include/ArduinoJson/Polyfills/parseInteger.hpp

// Copyright Benoit Blanchon 2014-2017
// MIT License
//
// Arduino JSON library
// https://bblanchon.github.io/ArduinoJson/
// If you like this project, please add a star!

#pragma once

#include <stdlib.h>

#include "../Configuration.hpp"
#include "./ctype.hpp"

namespace ArduinoJson {
namespace Polyfills {
template <typename T>
T parseInteger(const char *s) {
  if (!s) return 0;

  T result = 0;
  bool negative_result = false;

  switch (*s) {
    case '-':
      negative_result = true;
    case '+':
      s++;
      break;
  }

  while (isdigit(*s)) {
    result = static_cast<T>(result * 10 + (*s - '0'));
    s++;
  }

  return negative_result ? static_cast<T>(result * -1) : result;
}
}
}