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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/variable_length_struct_field.h"
#include "util.h"
const std::string VariableLengthStructField::kFieldType = "VariableLengthStructField";
VariableLengthStructField::VariableLengthStructField(std::string name, std::string type_name, ParseLocation loc)
: PacketField(name, loc), type_name_(type_name) {}
const std::string& VariableLengthStructField::GetFieldType() const {
return VariableLengthStructField::kFieldType;
}
Size VariableLengthStructField::GetSize() const {
return Size();
}
Size VariableLengthStructField::GetBuilderSize() const {
std::string ret = "(" + GetName() + "_->size() * 8) ";
return ret;
}
std::string VariableLengthStructField::GetDataType() const {
std::string ret = "std::unique_ptr<" + type_name_ + ">";
return ret;
}
void VariableLengthStructField::GenExtractor(std::ostream& s, int, bool) const {
s << GetName() << "_ptr = Parse" << type_name_ << "(" << GetName() << "_it);";
s << "if (" << GetName() << "_ptr != nullptr) {";
s << GetName() << "_it = " << GetName() << "_it + " << GetName() << "_ptr->size();";
s << "} else {";
s << GetName() << "_it = " << GetName() << "_it + " << GetName() << "_it.NumBytesRemaining();";
s << "}";
}
std::string VariableLengthStructField::GetGetterFunctionName() const {
std::stringstream ss;
ss << "Get" << util::UnderscoreToCamelCase(GetName());
return ss.str();
}
void VariableLengthStructField::GenGetter(std::ostream& s, Size start_offset, Size end_offset) const {
s << GetDataType() << " " << GetGetterFunctionName() << "() const {";
s << "ASSERT(was_validated_);";
s << "size_t end_index = size();";
s << "auto to_bound = begin();";
int num_leading_bits = GenBounds(s, start_offset, end_offset, GetSize());
s << GetDataType() << " " << GetName() << "_ptr{};";
GenExtractor(s, num_leading_bits, false);
s << "return " << GetName() << "_ptr;";
s << "}\n";
}
std::string VariableLengthStructField::GetBuilderParameterType() const {
return GetDataType();
}
bool VariableLengthStructField::BuilderParameterMustBeMoved() const {
return true;
}
bool VariableLengthStructField::HasParameterValidator() const {
return false;
}
void VariableLengthStructField::GenParameterValidator(std::ostream&) const {
// Validated at compile time.
}
void VariableLengthStructField::GenInserter(std::ostream& s) const {
s << GetName() << "_->Serialize(i);";
}
void VariableLengthStructField::GenValidator(std::ostream&) const {
// Do nothing
}
std::string VariableLengthStructField::GetRustDataType() const {
std::string ret = "std::boxed::Box<" + type_name_ + ">";
return ret;
}
void VariableLengthStructField::GenRustGetter(std::ostream&, Size, Size, std::string) const {}
void VariableLengthStructField::GenRustWriter(std::ostream&, Size, Size) const {}
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