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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef TOOLS_GN_RUST_PROJECT_WRITER_H_
#define TOOLS_GN_RUST_PROJECT_WRITER_H_
#include "gn/err.h"
#include "gn/target.h"
class Builder;
class BuildSettings;
// rust-project.json is an output format describing the rust build graph. It is
// used by rust-analyzer (a LSP server), similiar to compile-commands.json.
//
// an example output is in rust_project_writer.cc
class RustProjectWriter {
public:
// Write Rust build graph into a json file located by parameter file_name.
//
// Parameter quiet is not used.
static bool RunAndWriteFiles(const BuildSettings* build_setting,
const Builder& builder,
const std::string& file_name,
bool quiet,
Err* err);
static void RenderJSON(const BuildSettings* build_settings,
std::vector<const Target*>& all_targets,
std::ostream& rust_project);
private:
// This fuction visits the deps graph of a target in a DFS fashion.
static void VisitDeps(const Target* target, std::set<const Target*>* visited);
};
#endif // TOOLS_GN_RUST_PROJECT_WRITER_H_