basic_format_spec.h

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/******************************************************************************
The MIT License(MIT)
 
Embedded Template Library.
https://github.com/ETLCPP/etl
https://www.etlcpp.com
 
Copyright(c) 2019 John Wellbelove
 
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of this software and associated documentation files(the "Software"), to deal
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#ifndef ETL_BASIC_FORMAT_SPEC_INCLUDED
#define ETL_BASIC_FORMAT_SPEC_INCLUDED

 
#include "platform.h"
#include "static_assert.h"
#include "type_traits.h"
#include "utility.h"
 
namespace etl
{
  namespace private_basic_format_spec
  {
    //*******************************************************
    // Structures returned by stream formatting manipulators.
    //*******************************************************
    struct base_spec
    {
      ETL_CONSTEXPR base_spec(uint_least8_t base_)
        : base(base_)
      {
      }
 
      const uint_least8_t base;
    };
 
    //*********************************
    struct width_spec
    {
      ETL_CONSTEXPR width_spec(uint_least8_t width_)
        : width(width_)
      {
      }
 
      const uint_least8_t width;
    };
 
    //*********************************
    template <typename TChar>
    struct fill_spec
    {
      ETL_CONSTEXPR fill_spec(TChar fill_)
        : fill(fill_)
      {
      }
 
      const TChar fill;
    };
 
    //*********************************
    struct precision_spec
    {
      ETL_CONSTEXPR precision_spec(uint_least8_t precision_)
        : precision(precision_)
      {
      }
 
      const uint_least8_t precision;
    };
 
    //*********************************
    struct uppercase_spec
    {
      ETL_CONSTEXPR uppercase_spec(bool upper_case_)
        : upper_case(upper_case_)
      {
      }
 
      const bool upper_case;
    };
 
    //*********************************
    struct boolalpha_spec
    {
      ETL_CONSTEXPR boolalpha_spec(bool boolalpha_)
        : boolalpha(boolalpha_)
      {
      }
 
      const bool boolalpha;
    };
 
    //*********************************
    struct showbase_spec
    {
      ETL_CONSTEXPR showbase_spec(bool show_base_)
        : show_base(show_base_)
      {
      }
 
      const bool show_base;
    };
 
    //*********************************
    struct left_spec
    {
    };
 
    //*********************************
    struct right_spec
    {
    };
  } // namespace private_basic_format_spec
 
  //***************************************************************************
  // Stream formatting manipulators.
  //***************************************************************************
  static ETL_CONSTEXPR private_basic_format_spec::base_spec setbase(uint32_t base)
  {
    return private_basic_format_spec::base_spec(base);
  }
 
  //*********************************
  static ETL_CONSTEXPR private_basic_format_spec::width_spec setw(uint32_t width)
  {
    return private_basic_format_spec::width_spec(width);
  }
 
  //*********************************
  template <typename TChar>
  static ETL_CONSTEXPR private_basic_format_spec::fill_spec<TChar> setfill(TChar fill)
  {
    return private_basic_format_spec::fill_spec<TChar>(fill);
  }
 
  //*********************************
  static ETL_CONSTEXPR private_basic_format_spec::precision_spec setprecision(uint32_t precision)
  {
    return private_basic_format_spec::precision_spec(precision);
  }
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::base_spec bin(2U);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::base_spec oct(8U);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::base_spec dec(10U);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::base_spec hex(16U);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::left_spec left = private_basic_format_spec::left_spec();
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::right_spec right = private_basic_format_spec::right_spec();
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::boolalpha_spec boolalpha(true);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::boolalpha_spec noboolalpha(false);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::uppercase_spec uppercase(true);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::uppercase_spec nouppercase(false);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::showbase_spec showbase(true);
 
  //*********************************
  static ETL_CONSTANT private_basic_format_spec::showbase_spec noshowbase(false);
 
  //***************************************************************************
  //***************************************************************************
  template <typename TString>
  class basic_format_spec
  {
  public:
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR basic_format_spec() ETL_NOEXCEPT
      : base_(10U)
      , width_(0U)
      , precision_(0U)
      , upper_case_(false)
      , left_justified_(false)
      , boolalpha_(false)
      , show_base_(false)
      , fill_(typename TString::value_type(' '))
    {
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR basic_format_spec(uint_least8_t base__, uint_least8_t width__, uint_least8_t precision__, bool upper_case__, bool left_justified__,
                                bool boolalpha__, bool show_base__, typename TString::value_type fill__) ETL_NOEXCEPT
      : base_(base__)
      , width_(width__)
      , precision_(precision__)
      , upper_case_(upper_case__)
      , left_justified_(left_justified__)
      , boolalpha_(boolalpha__)
      , show_base_(show_base__)
      , fill_(fill__)
    {
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 void clear() ETL_NOEXCEPT
    {
      base_           = 10U;
      width_          = 0U;
      precision_      = 0U;
      upper_case_     = false;
      left_justified_ = false;
      boolalpha_      = false;
      show_base_      = false;
      fill_           = typename TString::value_type(' ');
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& base(uint32_t b) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      base_ = static_cast<uint_least8_t>(b);
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& base(uint32_t b) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      base_ = static_cast<uint_least8_t>(b);
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& binary() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return base(2);
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& binary() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return etl::move(base(2));
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& octal() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return base(8);
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& octal() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return etl::move(base(8));
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& decimal() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return base(10);
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& decimal() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return etl::move(base(10));
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& hex() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return base(16);
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& hex() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      return etl::move(base(16));
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR uint32_t get_base() const ETL_NOEXCEPT
    {
      return base_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& show_base(bool b) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      show_base_ = b;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& show_base(bool b) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      show_base_ = b;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR bool is_show_base() const ETL_NOEXCEPT
    {
      return show_base_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& width(uint32_t w) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      width_ = static_cast<uint_least8_t>(w);
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& width(uint32_t w) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      width_ = static_cast<uint_least8_t>(w);
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR uint32_t get_width() const ETL_NOEXCEPT
    {
      return width_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& precision(uint32_t p) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      precision_ = static_cast<uint_least8_t>(p);
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& precision(uint32_t p) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      precision_ = static_cast<uint_least8_t>(p);
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR uint32_t get_precision() const ETL_NOEXCEPT
    {
      return precision_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& upper_case(bool u) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      upper_case_ = u;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& upper_case(bool u) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      upper_case_ = u;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR bool is_upper_case() const ETL_NOEXCEPT
    {
      return upper_case_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& fill(typename TString::value_type c) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      fill_ = c;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& fill(typename TString::value_type c) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      fill_ = c;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR typename TString::value_type get_fill() const ETL_NOEXCEPT
    {
      return fill_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& left() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      left_justified_ = true;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& left() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      left_justified_ = true;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR bool is_left() const ETL_NOEXCEPT
    {
      return left_justified_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& right() ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      left_justified_ = false;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& right() ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      left_justified_ = false;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR bool is_right() const ETL_NOEXCEPT
    {
      return !left_justified_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR14 basic_format_spec& boolalpha(bool b) ETL_LVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      boolalpha_ = b;
      return *this;
    }
 
#if ETL_USING_CPP11
    ETL_CONSTEXPR14 basic_format_spec&& boolalpha(bool b) ETL_RVALUE_REF_QUALIFIER ETL_NOEXCEPT
    {
      boolalpha_ = b;
      return etl::move(*this);
    }
#endif
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR bool is_boolalpha() const ETL_NOEXCEPT
    {
      return boolalpha_;
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR friend bool operator==(const basic_format_spec& lhs, const basic_format_spec& rhs)
    {
      return (lhs.base_ == rhs.base_) && (lhs.width_ == rhs.width_) && (lhs.precision_ == rhs.precision_) && (lhs.upper_case_ == rhs.upper_case_)
             && (lhs.left_justified_ == rhs.left_justified_) && (lhs.boolalpha_ == rhs.boolalpha_) && (lhs.show_base_ == rhs.show_base_)
             && (lhs.fill_ == rhs.fill_);
    }
 
    //***************************************************************************
    //***************************************************************************
    ETL_CONSTEXPR friend bool operator!=(const basic_format_spec& lhs, const basic_format_spec& rhs)
    {
      return !(lhs == rhs);
    }
 
  private:
 
    uint_least8_t                base_;
    uint_least8_t                width_;
    uint_least8_t                precision_;
    bool                         upper_case_;
    bool                         left_justified_;
    bool                         boolalpha_;
    bool                         show_base_;
    typename TString::value_type fill_;
  };
} // namespace etl
 
#endif