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author | Max Kellermann <max@duempel.org> | 2014-03-01 07:36:59 +0100 |
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committer | Max Kellermann <max@duempel.org> | 2014-03-01 07:37:58 +0100 |
commit | 9dc5335e3e4e07371cfae96eca2cb5b2a93c8dd2 (patch) | |
tree | 3ed858544999558a767d5c6df6339c4ceefad2f3 /src/util | |
parent | d333de19802158a24d8bca35c87a711955c9aab3 (diff) | |
download | mpd-9dc5335e3e4e07371cfae96eca2cb5b2a93c8dd2.tar.gz mpd-9dc5335e3e4e07371cfae96eca2cb5b2a93c8dd2.tar.xz mpd-9dc5335e3e4e07371cfae96eca2cb5b2a93c8dd2.zip |
util/{Const,Writable}Buffer: add template specialization for "void"
Omit a few methods that are not applicable.
Diffstat (limited to '')
-rw-r--r-- | src/util/ConstBuffer.hxx | 34 | ||||
-rw-r--r-- | src/util/WritableBuffer.hxx | 34 |
2 files changed, 68 insertions, 0 deletions
diff --git a/src/util/ConstBuffer.hxx b/src/util/ConstBuffer.hxx index 35cffecc2..7f1fa5aa6 100644 --- a/src/util/ConstBuffer.hxx +++ b/src/util/ConstBuffer.hxx @@ -38,6 +38,40 @@ #include <assert.h> #endif +template<typename T> +struct ConstBuffer; + +template<> +struct ConstBuffer<void> { + typedef size_t size_type; + typedef const void *pointer_type; + typedef pointer_type const_pointer_type; + typedef pointer_type iterator; + typedef pointer_type const_iterator; + + pointer_type data; + size_type size; + + ConstBuffer() = default; + + constexpr ConstBuffer(std::nullptr_t):data(nullptr), size(0) {} + + constexpr ConstBuffer(pointer_type _data, size_type _size) + :data(_data), size(_size) {} + + constexpr static ConstBuffer Null() { + return ConstBuffer(nullptr, 0); + } + + constexpr bool IsNull() const { + return data == nullptr; + } + + constexpr bool IsEmpty() const { + return size == 0; + } +}; + /** * A reference to a memory area that is read-only. */ diff --git a/src/util/WritableBuffer.hxx b/src/util/WritableBuffer.hxx index 7267813f5..64e6d0c62 100644 --- a/src/util/WritableBuffer.hxx +++ b/src/util/WritableBuffer.hxx @@ -38,6 +38,40 @@ #include <assert.h> #endif +template<typename T> +struct WritableBuffer; + +template<> +struct WritableBuffer<void> { + typedef size_t size_type; + typedef void *pointer_type; + typedef const void *const_pointer_type; + typedef pointer_type iterator; + typedef const_pointer_type const_iterator; + + pointer_type data; + size_type size; + + WritableBuffer() = default; + + constexpr WritableBuffer(std::nullptr_t):data(nullptr), size(0) {} + + constexpr WritableBuffer(pointer_type _data, size_type _size) + :data(_data), size(_size) {} + + constexpr static WritableBuffer Null() { + return { nullptr, 0 }; + } + + constexpr bool IsNull() const { + return data == nullptr; + } + + constexpr bool IsEmpty() const { + return size == 0; + } +}; + /** * A reference to a memory area that is writable. * |