// Copyright 2019 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <lib/fidl/llcpp/transaction.h>

namespace fidl {

CompleterBase& CompleterBase::operator=(CompleterBase&& other) noexcept {
    if (this != &other) {
        DropTransaction();
        transaction_ = other.transaction_;
        owned_ = other.owned_;
        method_expects_reply_ = other.method_expects_reply_;
        other.transaction_ = nullptr;
        other.owned_ = false;
    }
    return *this;
}

void CompleterBase::Close(zx_status_t status) {
    EnsureHasTransaction();
    transaction_->Close(status);
    DropTransaction();
}

CompleterBase::CompleterBase(CompleterBase&& other) noexcept
    : transaction_(other.transaction_),
      owned_(other.owned_),
      method_expects_reply_(other.method_expects_reply_) {
    other.transaction_ = nullptr;
    other.owned_ = false;
}

CompleterBase::~CompleterBase() {
    ZX_ASSERT(!method_expects_reply() || !pending());
}

std::unique_ptr<Transaction> CompleterBase::TakeOwnership() {
    EnsureHasTransaction();
    std::unique_ptr<Transaction> clone = transaction_->TakeOwnership();
    DropTransaction();
    return clone;
}

void CompleterBase::SendReply(Message msg) {
    EnsureHasTransaction();
    transaction_->Reply(std::move(msg));
    DropTransaction();
}

void CompleterBase::EnsureHasTransaction() {
    ZX_ASSERT(transaction_);
}

void CompleterBase::DropTransaction() {
    if (owned_) {
        owned_ = false;
        delete transaction_;
    }
    transaction_ = nullptr;
}

}