Method scanIdent

query/expr/scanner.go:172–203

()

}

func (s *Scanner) scanIdent() (tok Token, pos Pos, lit string) {
	// Save the starting position of the identifier.
	_, pos = s.r.read()
	s.r.unread()

	var buf bytes.Buffer
	for {
		if ch, _ := s.r.read(); ch == eof {
			break
		} else if ch == '`' {
			tok0, pos0, lit0 := s.scanString()
			if tok0 == BADSTRING || tok0 == BADESCAPE {
				return tok0, pos0, lit0
			}
			return IDENT, pos, lit0
		} else if isIdentChar(ch) {
			s.r.unread()
			buf.WriteString(ScanBareIdent(s.r))
		} else {
			s.r.unread()
			break
		}
	}
	lit = buf.String()

	// If the literal matches a keyword then return that keyword.
	if tok = Lookup(lit); tok != IDENT {
		return tok, pos, ""
	}

	return IDENT, pos, lit
}

// scanString consumes a contiguous string of non-quote characters.
// Quote characters can be consumed if they're first escaped with a backslash.