// Copyright (C) 2023  Shanhu Tech Inc.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Affero General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License
// for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package strtoken

import (
	"shanhu.io/g/lexing"
)

func isBareRune(r rune) bool {
	if r == ' ' || r == '\n' || r == '\r' {
		return false
	}
	return true
}

func lexBare(x *lexing.Lexer) *lexing.Token {
	start := x.Rune()
	if !isBareRune(start) {
		panic("not starting with a bare rune")
	}

	for {
		x.Next()
		if x.Ended() || !isBareRune(x.Rune()) {
			break
		}
	}

	return x.MakeToken(bare)
}
