// Copyright 2018 The Fuchsia Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "lib/fidl/cpp/string.h"
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#include <string.h>
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#include "lib/fidl/cpp/encoder.h"
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namespace fidl {
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StringPtr::StringPtr() : is_null_(true) {}
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StringPtr::StringPtr(const StringPtr& other) = default;
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StringPtr::StringPtr(std::string str) : str_(std::move(str)), is_null_(false) {}
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StringPtr::StringPtr(const char* str)
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: str_(str ? std::string(str) : std::string()), is_null_(!str) {}
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StringPtr::StringPtr(const char* str, size_t length)
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: str_(str ? std::string(str, length) : std::string()), is_null_(!str) {}
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StringPtr::~StringPtr() = default;
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StringPtr::StringPtr(StringPtr&& other)
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: str_(std::move(other.str_)), is_null_(other.is_null_) {}
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StringPtr& StringPtr::operator=(const StringPtr& other) = default;
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StringPtr& StringPtr::operator=(StringPtr&& other) {
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str_ = std::move(other.str_);
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is_null_ = other.is_null_;
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return *this;
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}
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void StringPtr::Encode(Encoder* encoder, size_t offset) {
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fidl_string_t* string = encoder->GetPtr<fidl_string_t>(offset);
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if (is_null()) {
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string->size = 0u;
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string->data = reinterpret_cast<char*>(FIDL_ALLOC_ABSENT);
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} else {
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string->size = str_.size();
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string->data = reinterpret_cast<char*>(FIDL_ALLOC_PRESENT);
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size_t base = encoder->Alloc(str_.size());
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char* payload = encoder->GetPtr<char>(base);
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memcpy(payload, str_.data(), str_.size());
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}
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}
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void StringPtr::Decode(Decoder* decoder, StringPtr* value, size_t offset) {
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fidl_string_t* string = decoder->GetPtr<fidl_string_t>(offset);
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if (string->data) {
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value->reset(std::string(string->data, string->size));
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} else {
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*value = StringPtr();
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}
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}
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} // namespace fidl
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