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// -*- c++ -*-
#pragma once

#include <vector>
#include <string>
#include <atomic>
#include <list>
#include <memory>

#include "libcppbuild.h"

enum class State
{
	Unknown,
	Ready,
	Running,
	Done,
	Error,
};

class Task
{
public:
	Task(const BuildConfiguration& config,
	     const std::vector<std::string>& depends = {});

	int registerDepTasks(const std::list<std::shared_ptr<Task>>& tasks);

	bool dirty();
	bool ready();
	int run();
	State state() const;
	virtual int clean() = 0 ;
	virtual std::vector<std::string> depends() const = 0;
	virtual std::string target() const = 0;

	virtual std::string toJSON() const { return {}; };

	const BuildConfiguration& buildConfig() const;

	TargetType targetType() const;
	Language sourceLanguage() const;
	OutputSystem outputSystem() const;
	std::string compiler() const;

protected:
	std::atomic<State> task_state{State::Unknown};
	virtual int runInner() { return 0; };
	virtual bool dirtyInner() { return false; }

	std::vector<std::string> dependsStr;
	std::list<std::shared_ptr<Task>> dependsTasks;
	const BuildConfiguration& config;
	TargetType target_type{TargetType::Auto};
	Language source_language{Language::Auto};
	OutputSystem output_system{OutputSystem::Host};
};