// Implements yyLexer.
func (l *lexer) Lex(lval *yySymType) int {
r := rune(l.scan())
if r == lex.RuneEOF {
r = 0
}
pos := l.First.Pos()
l.lastPos = pos
c := lex.NewChar(pos, r)
var val int
switch r {
case IDENT, NUMBER:
val = xc.Dict.ID(l.TokenBytes(nil))
}
t := xc.Token{Char: c, Val: val}
if !l.firstTok.Pos().IsValid() {
l.firstTok = t
}
lval.Token = t
return int(r)
}
func (l *lexer) char(r int) lex.Char {
return lex.NewChar(l.First.Pos(), rune(r))
}