e45bf6a603
Editor::copy() now writes into a buffer provided by the client.
Editor::text() now returns a series of `pair<const char*, size_t>`
instead of `const StringSlice&`
Change-Id: Iff298dd7a80aaad19f9326d10c5b67bea5ef8e22
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/232579
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#ifndef stringslice_DEFINED
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#define stringslice_DEFINED
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#include "experimental/editor/stringview.h"
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#include <memory>
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#include <cstddef>
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namespace editor {
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// A lightweight modifiable string class.
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class StringSlice {
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public:
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StringSlice() = default;
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StringSlice(const char* s, std::size_t l) { this->insert(0, s, l); }
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StringSlice(StringSlice&&);
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StringSlice(const StringSlice& that) : StringSlice(that.begin(), that.size()) {}
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~StringSlice() = default;
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StringSlice& operator=(StringSlice&&);
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StringSlice& operator=(const StringSlice&);
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// access:
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// Does not have a c_str method; is *not* NUL-terminated.
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const char* begin() const { return fPtr.get(); }
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const char* end() const { return fPtr ? fPtr.get() + fLength : nullptr; }
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std::size_t size() const { return fLength; }
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editor::StringView view() const { return {fPtr.get(), fLength}; }
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// mutation:
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void insert(std::size_t offset, const char* text, std::size_t length);
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void remove(std::size_t offset, std::size_t length);
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// modify capacity only:
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void reserve(std::size_t size) { if (size > fCapacity) { this->realloc(size); } }
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void shrink() { this->realloc(fLength); }
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private:
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struct FreeWrapper { void operator()(void*); };
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std::unique_ptr<char[], FreeWrapper> fPtr;
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std::size_t fLength = 0;
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std::size_t fCapacity = 0;
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void realloc(std::size_t);
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};
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} // namespace editor;
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#endif // stringslice_DEFINED
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