62 lines
866 B
Go
62 lines
866 B
Go
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package driver
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func notWhitespace(sql string) bool {
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const (
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code = iota
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slash
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minus
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ccomment
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sqlcomment
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endcomment
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)
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state := code
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for _, b := range ([]byte)(sql) {
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if b == 0 {
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break
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}
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switch state {
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case code:
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switch b {
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case '/':
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state = slash
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case '-':
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state = minus
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case ' ', ';', '\t', '\n', '\v', '\f', '\r':
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continue
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default:
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return true
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}
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case slash:
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if b != '*' {
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return true
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}
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state = ccomment
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case minus:
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if b != '-' {
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return true
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}
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state = sqlcomment
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case ccomment:
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if b == '*' {
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state = endcomment
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}
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case sqlcomment:
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if b == '\n' {
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state = code
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}
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case endcomment:
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switch b {
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case '/':
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state = code
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case '*':
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state = endcomment
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default:
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state = ccomment
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}
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}
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}
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return state == slash || state == minus
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}
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