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lex.go: separate '.' from identifier

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This commit is contained in:
lordwelch 2018-05-15 11:42:59 -07:00
parent 7abebdbfd6
commit ea40290f43
1 changed files with 3 additions and 10 deletions
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13
text/lex/lex.go
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@ -362,18 +362,11 @@ func lexInsideAction(l *Lexer) stateFn {
// special look-ahead for ".field" so we don't break l.backup().
r = l.peek()
if r < '0' || '9' < r {
l.emit(ItemChar)
l.emit(ItemDot)
return lexInsideAction
}
fallthrough // '.' can start a number.
case r == '+' || r == '-' || ('0' <= r && r <= '9'):
if r == '+' || r == '-' {
r := l.peek()
if (r < '0' || '9' < r) && r != '.' {
return lexOperator
}
}
case '0' <= r && r <= '9':
l.backup()
return lexNumber
case isOperator(r):
@ -439,7 +432,7 @@ func lexIdentifier(l *Lexer) stateFn {
Loop:
for {
switch r := l.next(); {
case isAlphaNumeric(r) || r == '.':
case isAlphaNumeric(r):
// absorb.
default:
l.backup()