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// file : build/rule -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD_RULE
#define BUILD_RULE
#include <string>
#include <typeindex>
#include <functional> // reference_wrapper
#include <unordered_map>
#include <butl/prefix-map>
#include <build/target>
#include <build/operation>
namespace build
{
class rule
{
public:
virtual void*
match (action, target&, const std::string& hint) const = 0;
virtual recipe
apply (action, target&, void*) const = 0;
};
using target_rule_map = std::unordered_map<
std::type_index,
butl::prefix_multimap<std::string, std::reference_wrapper<rule>, '.'>>;
using operation_rule_map = std::unordered_map<operation_id, target_rule_map>;
extern operation_rule_map rules;
// Fallback rule that on update verifies that the path exists and is
// not older than any of its prerequisites.
//
class path_rule: public rule
{
public:
virtual void*
match (action, target&, const std::string& hint) const;
virtual recipe
apply (action, target&, void*) const;
static target_state
perform_update (action, target&);
};
class dir_rule: public rule
{
public:
virtual void*
match (action, target&, const std::string& hint) const;
virtual recipe
apply (action, target&, void*) const;
};
class fsdir_rule: public rule
{
public:
virtual void*
match (action, target&, const std::string& hint) const;
virtual recipe
apply (action, target&, void*) const;
static target_state
perform_update (action, target&);
static target_state
perform_clean (action, target&);
};
}
#endif // BUILD_RULE
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