Implementation of 1-Wire with added Alarm Search Functionality
Dependents: Max32630_One_Wire_Interface
array.hpp@43:23017dcd2ec3, 2016-04-06 (annotated)
- Committer:
- IanBenzMaxim
- Date:
- Wed Apr 06 08:49:27 2016 -0500
- Revision:
- 43:23017dcd2ec3
- Parent:
- 33:a4c015046956
- Child:
- 49:36954b62f503
Add check for self-assignment to array since it could lead to undefined behavior with memcpy. Minor cleanup to OneWireMaster.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
IanBenzMaxim | 33:a4c015046956 | 1 | #ifndef _ARRAY_HPP |
IanBenzMaxim | 33:a4c015046956 | 2 | #define _ARRAY_HPP |
IanBenzMaxim | 33:a4c015046956 | 3 | |
IanBenzMaxim | 33:a4c015046956 | 4 | #include <cstdint> |
IanBenzMaxim | 33:a4c015046956 | 5 | #include <cstring> |
IanBenzMaxim | 33:a4c015046956 | 6 | |
IanBenzMaxim | 33:a4c015046956 | 7 | template <typename T, std::size_t N> |
IanBenzMaxim | 33:a4c015046956 | 8 | class array |
IanBenzMaxim | 33:a4c015046956 | 9 | { |
IanBenzMaxim | 33:a4c015046956 | 10 | public: |
IanBenzMaxim | 33:a4c015046956 | 11 | static const std::size_t length = N; |
IanBenzMaxim | 33:a4c015046956 | 12 | typedef T Buffer[N]; |
IanBenzMaxim | 33:a4c015046956 | 13 | |
IanBenzMaxim | 33:a4c015046956 | 14 | private: |
IanBenzMaxim | 33:a4c015046956 | 15 | Buffer m_buffer; |
IanBenzMaxim | 33:a4c015046956 | 16 | |
IanBenzMaxim | 33:a4c015046956 | 17 | public: |
IanBenzMaxim | 33:a4c015046956 | 18 | const array<T, N> & operator=(const array<T, N> & rhs) |
IanBenzMaxim | 33:a4c015046956 | 19 | { |
IanBenzMaxim | 43:23017dcd2ec3 | 20 | if (this != &rhs) |
IanBenzMaxim | 43:23017dcd2ec3 | 21 | { |
IanBenzMaxim | 33:a4c015046956 | 22 | std::memcpy(this->m_buffer, rhs.m_buffer, N * sizeof(T)); |
IanBenzMaxim | 43:23017dcd2ec3 | 23 | } |
IanBenzMaxim | 43:23017dcd2ec3 | 24 | return rhs; |
IanBenzMaxim | 33:a4c015046956 | 25 | } |
IanBenzMaxim | 33:a4c015046956 | 26 | |
IanBenzMaxim | 33:a4c015046956 | 27 | bool operator==(const array<T, N> & rhs) const |
IanBenzMaxim | 33:a4c015046956 | 28 | { |
IanBenzMaxim | 33:a4c015046956 | 29 | return (std::memcmp(this->m_buffer, rhs.m_buffer, N * sizeof(T)) == 0); |
IanBenzMaxim | 33:a4c015046956 | 30 | } |
IanBenzMaxim | 33:a4c015046956 | 31 | |
IanBenzMaxim | 33:a4c015046956 | 32 | bool operator!=(const array<T, N> & rhs) const |
IanBenzMaxim | 33:a4c015046956 | 33 | { |
IanBenzMaxim | 33:a4c015046956 | 34 | return !operator==(rhs); |
IanBenzMaxim | 33:a4c015046956 | 35 | } |
IanBenzMaxim | 33:a4c015046956 | 36 | |
IanBenzMaxim | 33:a4c015046956 | 37 | operator Buffer &() |
IanBenzMaxim | 33:a4c015046956 | 38 | { |
IanBenzMaxim | 33:a4c015046956 | 39 | return m_buffer; // Conversion to array reference |
IanBenzMaxim | 33:a4c015046956 | 40 | } |
IanBenzMaxim | 33:a4c015046956 | 41 | |
IanBenzMaxim | 33:a4c015046956 | 42 | operator const Buffer&() const |
IanBenzMaxim | 33:a4c015046956 | 43 | { |
IanBenzMaxim | 33:a4c015046956 | 44 | return m_buffer; // Conversion to const array reference |
IanBenzMaxim | 33:a4c015046956 | 45 | } |
IanBenzMaxim | 33:a4c015046956 | 46 | |
IanBenzMaxim | 33:a4c015046956 | 47 | array<T, N>() { } |
IanBenzMaxim | 33:a4c015046956 | 48 | |
IanBenzMaxim | 33:a4c015046956 | 49 | array<T, N>(const array<T, N> & copy) |
IanBenzMaxim | 33:a4c015046956 | 50 | { |
IanBenzMaxim | 33:a4c015046956 | 51 | operator=(copy); |
IanBenzMaxim | 33:a4c015046956 | 52 | } |
IanBenzMaxim | 33:a4c015046956 | 53 | |
IanBenzMaxim | 33:a4c015046956 | 54 | array<T, N>(const Buffer & buffer) |
IanBenzMaxim | 33:a4c015046956 | 55 | { |
IanBenzMaxim | 33:a4c015046956 | 56 | std::memcpy(m_buffer, buffer, N * sizeof(T)); |
IanBenzMaxim | 33:a4c015046956 | 57 | } |
IanBenzMaxim | 33:a4c015046956 | 58 | }; |
IanBenzMaxim | 33:a4c015046956 | 59 | |
IanBenzMaxim | 33:a4c015046956 | 60 | #endif |