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cgo: add support for negative numeric constants in tokenizer #1100

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cgo: add support for negative numeric constants in tokenizer #1100

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4 changes: 2 additions & 2 deletions cgo/const.go
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Original file line number Diff line number Diff line change
Expand Up @@ -131,7 +131,7 @@ func (t *tokenizer) Next() {
t.value = t.buf[:1]
t.buf = t.buf[1:]
return
case c >= '0' && c <= '9':
case (c >= '0' && c <= '9') || c == '-':
// Numeric constant (int, float, etc.).
// Find the last non-numeric character.
tokenLen := len(t.buf)
Expand All @@ -140,7 +140,7 @@ func (t *tokenizer) Next() {
if c == '.' {
hasDot = true
}
if c >= '0' && c <= '9' || c == '.' || c == '_' || c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' {
if c >= '0' && c <= '9' || c == '-' || c == '.' || c == '_' || c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z' {
tokenLen = i + 1
} else {
break
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1 change: 1 addition & 0 deletions cgo/const_test.go
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Expand Up @@ -15,6 +15,7 @@ func TestParseConst(t *testing.T) {
Go string
}{
{`5`, `5`},
{`-5`, `-5`},
{`(5)`, `(5)`},
{`(((5)))`, `(5)`},
{`)`, `error: 1:1: unexpected token )`},
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