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// file : build/token -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD_TOKEN
#define BUILD_TOKEN
#include <string>
#include <iosfwd>
#include <cstddef> // size_t
#include <cstdint> // uint64_t
#include <cassert>
#include <utility> // move
namespace build
{
enum class token_type
{
eos,
name,
newline,
pair_separator,
colon,
lcbrace,
rcbrace,
equal,
plus_equal,
dollar,
lparen,
rparen
};
class token
{
public:
token_type
type () const {return t_;}
// Token is whitespace-separated from the previous token.
//
bool
separated () const {return s_;}
std::string const&
name () const {assert (t_ == token_type::name); return n_;}
std::uint64_t line () const {return l_;}
std::uint64_t column () const {return c_;}
public:
token (token_type t, bool s, std::uint64_t l, std::uint64_t c)
: t_ (t), s_ (s), l_ (l), c_ (c) {}
token (std::string n, bool s, std::uint64_t l, std::uint64_t c)
: t_ (token_type::name), s_ (s), n_ (std::move (n)), l_ (l), c_ (c) {}
private:
token_type t_;
bool s_;
std::string n_;
std::uint64_t l_;
std::uint64_t c_;
};
// Output the token value in a format suitable for diagnostics.
//
std::ostream&
operator<< (std::ostream&, const token&);
}
#endif // BUILD_TOKEN
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