evmc::byte_traits< T > Struct Template Reference

The char traits for byte-like types. More...

#include <bytes.hpp>

Inheritance diagram for evmc::byte_traits< T >:

Public Types
using	char_type = T
	The byte type.

Static Public Member Functions
static constexpr void	assign (char_type &c1, const char_type &c2)
	Assigns c2 to c1.
static constexpr char_type *	assign (char_type *ptr, std::size_t count, char_type value)
	Assigns value to each byte in [ptr, ptr+count).
static constexpr bool	eq (char_type a, char_type b)
	Returns true if bytes are equal.
static constexpr bool	lt (char_type a, char_type b)
	Returns true if byte a is less than byte b.
static constexpr char_type *	move (char_type *dest, const char_type *src, std::size_t count)
	Copies count bytes from src to dest. Performs correctly even if ranges overlap.
static constexpr char_type *	copy (char_type *dest, const char_type *src, std::size_t count)
	Copies count bytes from src to dest. The ranges must not overlap.
static constexpr int	compare (const char_type *a, const char_type *b, std::size_t count)
	Compares lexicographically the bytes in two ranges of equal length.
static std::size_t	length (const char_type *s)
	Returns the length of a null-terminated byte string.
static constexpr const char_type *	find (const char_type *s, std::size_t count, const char_type &value)
	Finds the value in the range of bytes and returns the pointer to the first occurrence or nullptr if not found.

Detailed Description

template<typename T>
struct evmc::byte_traits< T >

The char traits for byte-like types.

See: https://en.cppreference.com/w/cpp/string/char_traits.

Definition at line 17 of file bytes.hpp.

Member Typedef Documentation

char_type

template<typename T >

using evmc::byte_traits< T >::char_type = T

The byte type.

Definition at line 21 of file bytes.hpp.

Member Function Documentation

assign() [1/2]

template<typename T >

static constexpr void evmc::byte_traits< T >::assign ( char_type &  c1, const char_type &  c2  )

inlinestaticconstexpr

Assigns c2 to c1.

Definition at line 24 of file bytes.hpp.

{ c1 = c2; }

assign() [2/2]

template<typename T >

static constexpr char_type * evmc::byte_traits< T >::assign ( char_type *  ptr, std::size_t  count, char_type  value  )

inlinestaticconstexpr

Assigns value to each byte in [ptr, ptr+count).

Definition at line 27 of file bytes.hpp.

 {
 std::fill_n(ptr, count, value);
 return ptr;
 }

compare()

template<typename T >

static constexpr int evmc::byte_traits< T >::compare ( const char_type *  a, const char_type *  b, std::size_t  count  )

inlinestaticconstexpr

Compares lexicographically the bytes in two ranges of equal length.

Definition at line 57 of file bytes.hpp.

 {
 for (; count != 0; --count, ++a, ++b)
 {
 if (lt(*a, *b))
 return -1;
 if (lt(*b, *a))
 return 1;
 }
 return 0;
 }

copy()

template<typename T >

static constexpr char_type * evmc::byte_traits< T >::copy ( char_type *  dest, const char_type *  src, std::size_t  count  )

inlinestaticconstexpr

Copies count bytes from src to dest. The ranges must not overlap.

Definition at line 50 of file bytes.hpp.

 {
 std::copy_n(src, count, dest);
 return dest;
 }

eq()

template<typename T >

static constexpr bool evmc::byte_traits< T >::eq ( char_type  a, char_type  b  )

inlinestaticconstexpr

Returns true if bytes are equal.

Definition at line 34 of file bytes.hpp.

{ return a == b; }

find()

template<typename T >

static constexpr const char_type * evmc::byte_traits< T >::find ( const char_type *  s, std::size_t  count, const char_type &  value  )

inlinestaticconstexpr

Finds the value in the range of bytes and returns the pointer to the first occurrence or nullptr if not found.

Definition at line 78 of file bytes.hpp.

 {
 const auto end = s + count;
 const auto p = std::find(s, end, value);
 return p != end ? p : nullptr;
 }

length()

template<typename T >

static std::size_t evmc::byte_traits< T >::length ( const char_type *  s )

inlinestatic

Returns the length of a null-terminated byte string.

Definition at line 71 of file bytes.hpp.

 {
 return std::strlen(reinterpret_cast<const char*>(s));
 }

lt()

template<typename T >

static constexpr bool evmc::byte_traits< T >::lt ( char_type  a, char_type  b  )

inlinestaticconstexpr

Returns true if byte a is less than byte b.

Definition at line 37 of file bytes.hpp.

{ return a < b; }

move()

template<typename T >

static constexpr char_type * evmc::byte_traits< T >::move ( char_type *  dest, const char_type *  src, std::size_t  count  )

inlinestaticconstexpr

Copies count bytes from src to dest. Performs correctly even if ranges overlap.

Definition at line 40 of file bytes.hpp.

 {
 if (dest < src)
 std::copy_n(src, count, dest);
 else if (src < dest)
 std::copy_backward(src, src + count, dest + count);
 return dest;
 }

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The documentation for this struct was generated from the following file:

• include/evmc/bytes.hpp