object-introspection/oi/CodeGen.h
Alastair Robertson e1b16a3d7e TypeGraph: Switch from pointers to references
References must always have a value, so are semantically clearer than
pointers for variables which must always be set.

No functional changes.
2023-07-06 17:24:33 +01:00

79 lines
2.5 KiB
C++

/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* 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.
*/
#pragma once
#include <filesystem>
#include <functional>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include "ContainerInfo.h"
#include "OICodeGen.h"
struct drgn_type;
class SymbolService;
namespace type_graph {
class Class;
class Member;
class TypeGraph;
} // namespace type_graph
class CodeGen {
public:
CodeGen(const OICodeGen::Config& config, SymbolService& symbols)
: config_(config), symbols_(symbols) {
}
/*
* Helper function to perform all the steps required for code generation for a
* single drgn_type.
*/
bool codegenFromDrgn(struct drgn_type* drgnType, std::string& code);
void registerContainer(const std::filesystem::path& path);
void addDrgnRoot(struct drgn_type* drgnType,
type_graph::TypeGraph& typeGraph);
void transform(type_graph::TypeGraph& typeGraph);
void generate(type_graph::TypeGraph& typeGraph,
std::string& code,
struct drgn_type*
drgnType /* TODO: this argument should not be required */
);
private:
const OICodeGen::Config& config_;
SymbolService& symbols_;
std::vector<ContainerInfo> containerInfos_;
std::unordered_set<const ContainerInfo*> definedContainers_;
std::unordered_map<const type_graph::Class*, const type_graph::Member*>
thriftIssetMembers_;
void genDefsThrift(const type_graph::TypeGraph& typeGraph, std::string& code);
void addGetSizeFuncDefs(const type_graph::TypeGraph& typeGraph,
std::string& code);
void getClassSizeFuncDef(const type_graph::Class& c, std::string& code);
void getClassSizeFuncConcrete(std::string_view funcName,
const type_graph::Class& c,
std::string& code) const;
void addTypeHandlers(const type_graph::TypeGraph& typeGraph,
std::string& code);
void getClassTypeHandler(const type_graph::Class& c, std::string& code);
};