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// file : libbuild2/test/script/builtin.hxx -*- C++ -*-
// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef LIBBUILD2_TEST_SCRIPT_BUILTIN_HXX
#define LIBBUILD2_TEST_SCRIPT_BUILTIN_HXX
#include <map>
#include <libbuild2/types.hxx>
#include <libbuild2/utility.hxx>
namespace build2
{
namespace test
{
namespace script
{
class scope;
// A process/thread-like object representing a running builtin.
//
// For now, instead of allocating the result storage dynamically, we
// expect it to be provided by the caller.
//
class builtin
{
public:
uint8_t
wait () {if (t_.joinable ()) t_.join (); return r_;}
~builtin () {wait ();}
public:
builtin (uint8_t& r, thread&& t = thread ()): r_ (r), t_ (move (t)) {}
builtin (builtin&&) = default;
private:
uint8_t& r_;
thread t_;
};
// Start builtin command. Throw system_error on failure.
//
// Note that unlike argc/argv, our args don't include the program name.
//
using builtin_func = builtin (scope&,
uint8_t& result,
const strings& args,
auto_fd in, auto_fd out, auto_fd err);
class builtin_map: public std::map<string, builtin_func*>
{
public:
using base = std::map<string, builtin_func*>;
using base::base;
// Return NULL if not a builtin.
//
builtin_func*
find (const string& n) const
{
auto i (base::find (n));
return i != end () ? i->second : nullptr;
}
};
extern const builtin_map builtins;
}
}
}
#endif // LIBBUILD2_TEST_SCRIPT_BUILTIN_HXX
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