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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/custom_field.h"
#include "util.h"
const std::string CustomField::kFieldType = "CustomField";
CustomField::CustomField(std::string name, std::string type_name, ParseLocation loc)
: PacketField(name, loc), type_name_(type_name) {}
const std::string& CustomField::GetFieldType() const {
return CustomField::kFieldType;
}
Size CustomField::GetSize() const {
return Size();
}
Size CustomField::GetBuilderSize() const {
std::string ret = "(" + GetName() + "_.size() * 8) ";
return ret;
}
std::string CustomField::GetDataType() const {
return type_name_;
}
void CustomField::GenExtractor(std::ostream& s, int, bool) const {
s << "auto optional_it = ";
s << GetDataType() << "::Parse( " << GetName() << "_ptr, " << GetName() << "_it);";
s << "if (optional_it) {";
s << GetName() << "_it = *optional_it;";
s << "} else {";
s << GetName() << "_it = " << GetName() << "_it + " << GetName() << "_it.NumBytesRemaining();";
s << GetName() << "_ptr = nullptr;";
s << "}";
}
std::string CustomField::GetGetterFunctionName() const {
std::stringstream ss;
ss << "Get" << util::UnderscoreToCamelCase(GetName());
return ss.str();
}
void CustomField::GenGetter(std::ostream& s, Size start_offset, Size end_offset) const {
s << "std::unique_ptr<" << 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 << "std::unique_ptr<" << GetDataType() << "> " << GetName() << "_value";
s << " = std::make_unique<" << GetDataType() << ">();";
s << GetDataType() << "* " << GetName() << "_ptr = " << GetName() << "_value.get();";
GenExtractor(s, num_leading_bits, false);
s << "if (" << GetName() << "_ptr == nullptr) {" << GetName() << "_value.reset(); }";
s << "return " << GetName() << "_value;";
s << "}\n";
}
std::string CustomField::GetBuilderParameterType() const {
return GetDataType();
}
bool CustomField::HasParameterValidator() const {
return false;
}
void CustomField::GenParameterValidator(std::ostream&) const {
// Do nothing.
}
void CustomField::GenInserter(std::ostream& s) const {
s << GetName() << "_.Serialize(i);";
}
void CustomField::GenValidator(std::ostream&) const {
// Do nothing.
}
void CustomField::GenStringRepresentation(std::ostream& s, std::string accessor) const {
s << accessor << "->ToString()";
}
void CustomField::GenBuilderParameterFromView(std::ostream& s) const {
s << "*view.Get" << util::UnderscoreToCamelCase(GetName()) << "()";
}
std::string CustomField::GetRustDataType() const {
return type_name_;
}
void CustomField::GenRustGetter(std::ostream&, Size, Size, std::string) const {}
void CustomField::GenRustWriter(std::ostream&, Size, Size) const {}
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