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// file : build/name -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD_NAME
#define BUILD_NAME
#include <string>
#include <vector>
#include <iosfwd>
#include <utility> // move()
#include <butl/path>
// Note: include <build/types> instead of this file directly.
//
namespace build
{
using butl::dir_path;
// A name is what we operate on by default. Depending on the context,
// it can be interpreted as a target or prerequisite name. A name
// without a type and directory can be used to represent any text.
// A name with directory and empty value represents a directory.
// A name may also be project-qualified. If the project name is
// empty, then it means the name is in a project other than our
// own (e.g., it is installed).
//
// If pair is not '\0', then this name and the next in the list
// form a pair.
//
struct name
{
name () = default;
explicit name (std::string v): value (std::move (v)) {}
name& operator= (std::string v) {return *this = name (std::move (v));}
explicit name (dir_path d): dir (std::move (d)) {}
name& operator= (dir_path d) {return *this = name (std::move (d));}
name (std::string t, std::string v)
: type (std::move (t)), value (std::move (v)) {}
name (dir_path d, std::string t, std::string v)
: dir (std::move (d)), type (std::move (t)), value (std::move (v)) {}
// The first argument should be from project_name_pool.
//
name (const std::string* p, dir_path d, std::string t, std::string v)
: proj (p),
dir (std::move (d)),
type (std::move (t)),
value (std::move (v)) {}
bool
qualified () const {return proj != nullptr;}
bool
unqualified () const {return proj == nullptr;}
bool
typed () const {return !type.empty ();}
bool
untyped () const {return type.empty ();}
bool
empty () const {return dir.empty () && value.empty ();}
// Note that strictly speaking the following tests should be
// orthogonal to qualification. However, the vast majority of
// cases where we expect a simple or directory name, we also
// expect it to be unqualified.
//
// Note also that empty name is simple but not a directory.
//
bool
simple () const {return unqualified () && untyped () && dir.empty ();}
bool
directory () const
{return unqualified () && untyped () && !dir.empty () && value.empty ();}
const std::string* proj = nullptr; // Points to project_name_pool.
dir_path dir;
std::string type;
std::string value;
char pair = '\0'; // Pair symbol, if any.
};
inline bool
operator== (const name& x, const name& y)
{
return x.proj == y.proj && // Pooled, so can just compare pointers.
x.type == y.type &&
x.dir == y.dir &&
x.value == y.value;
}
inline bool
operator!= (const name& x, const name& y) {return !(x == y);}
typedef std::vector<name> names;
std::ostream&
operator<< (std::ostream&, const name&);
std::ostream&
operator<< (std::ostream&, const names&);
}
#endif // BUILD_NAME
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