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/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "fields/count_field.h"
#include "util.h"
const std::string CountField::kFieldType = "CountField";
CountField::CountField(std::string name, int size, ParseLocation loc)
: ScalarField(name + "_count", size, loc), sized_field_name_(name) {}
const std::string& CountField::GetFieldType() const {
return CountField::kFieldType;
}
void CountField::GenGetter(std::ostream& s, Size start_offset, Size end_offset) const {
s << "protected:";
ScalarField::GenGetter(s, start_offset, end_offset);
s << "public:\n";
}
bool CountField::GenBuilderParameter(std::ostream&) const {
// There is no builder parameter for a size field
return false;
}
bool CountField::HasParameterValidator() const {
return false;
}
void CountField::GenParameterValidator(std::ostream&) const {
// There is no builder parameter for a size field
// TODO: Check if the payload fits in the packet?
}
void CountField::GenInserter(std::ostream&) const {
ERROR(this) << __func__ << ": This should not be called for count fields";
}
void CountField::GenValidator(std::ostream&) const {
// Do nothing since the fixed count fields will be handled specially.
}
std::string CountField::GetSizedFieldName() const {
return sized_field_name_;
}
void CountField::GenRustWriter(std::ostream& s, Size start_offset, Size) const {
s << "buffer[" << start_offset.bytes() << "..";
s << start_offset.bytes() + GetSize().bytes() << "].copy_from_slice(&";
s << "(self." << GetSizedFieldName() << ".len() as u8).to_le_bytes());";
}
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