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// file : libbuild2/adhoc-rule-cxx.hxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_ADHOC_RULE_CXX_HXX
#define LIBBUILD2_ADHOC_RULE_CXX_HXX
#include <libbuild2/types.hxx>
#include <libbuild2/forward.hxx>
#include <libbuild2/utility.hxx>
#include <libbuild2/rule.hxx>
#include <libbuild2/export.hxx>
namespace build2
{
// Ad hoc C++ rule.
//
// Note: exported but should not be used directly (i.e., registered).
//
class LIBBUILD2_SYMEXPORT cxx_rule: public simple_rule
{
// For now this class is provided purely as an alias for rule in case the
// implementation (which is also called rule) needs to refer to something
// in its base.
};
// Note that when used as part of a pattern, the implementation cannot use
// the match_extra::buffer nor the target auxilary data storage.
//
class LIBBUILD2_SYMEXPORT cxx_rule_v1: public cxx_rule
{
public:
// A robust recipe may want to incorporate the recipe_state into its
// up-to-date decision as if the recipe library was a prerequisite (it
// cannot be injected as a real prerequisite since it's from a different
// build context).
//
// If pattern is not NULL then this recipe belongs to an ad hoc pattern
// rule and apply() may need to call the pattern's apply_*() functions if
// the pattern has any ad hoc group member substitutions or prerequisite
// substitutions/non-patterns, respectively.
//
const location recipe_loc; // Buildfile location of the recipe.
const target_state recipe_state; // State of recipe library target.
const adhoc_rule_pattern* pattern; // Ad hoc pattern rule of recipe.
cxx_rule_v1 (const location& l,
target_state s,
const adhoc_rule_pattern* p)
: recipe_loc (l), recipe_state (s), pattern (p) {}
// Return true by default.
//
virtual bool
match (action, target&) const override;
};
// Note: not exported.
//
class adhoc_cxx_rule: public adhoc_rule
{
public:
virtual bool
match (action, target&, const string&, match_extra&) const override;
virtual recipe
apply (action, target&, match_extra&) const override;
adhoc_cxx_rule (string, const location&, size_t,
uint64_t ver,
optional<string> sep);
virtual bool
recipe_text (const scope&,
const target_type&,
string&&,
attributes&) override;
virtual
~adhoc_cxx_rule () override;
virtual void
dump_text (ostream&, string&) const override;
public:
// Note that this recipe (rule instance) can be shared between multiple
// targets which could all be matched in parallel.
//
uint64_t version;
optional<string> separator;
string code;
mutable atomic<cxx_rule*> impl;
};
}
#endif // LIBBUILD2_ADHOC_RULE_CXX_HXX
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