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lex: remove leading 0's to not parse integers in octal #85

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merged 1 commit into from
Nov 21, 2024
Merged

lex: remove leading 0's to not parse integers in octal #85

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16 changes: 16 additions & 0 deletions lex.go
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Original file line number Diff line number Diff line change
Expand Up @@ -227,6 +227,17 @@ func lexText(l *lexer) lexStateFn {

func lexNumber(l *lexer) lexStateFn {
numberBuf := make([]rune, 0, 10)

// // remove leading zeros
for l.nextRune == '0' {
_, eof := l.next()
if eof {
l.tokens <- token{tokNumber, "0"}
l.tokens <- token{typ: tokEOF}
return nil
}
}

for unicode.IsDigit(l.nextRune) {
r, eof := l.next()
numberBuf = append(numberBuf, r)
Expand All @@ -237,6 +248,11 @@ func lexNumber(l *lexer) lexStateFn {
}
}

if len(numberBuf) == 0 {
l.tokens <- token{tokNumber, "0"}
return lexInput
}

if len(numberBuf) > 0 {
l.tokens <- token{tokNumber, string(numberBuf)}
}
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