31 lines
529 B
Go
31 lines
529 B
Go
package syntax
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func isSpace(ch byte) bool {
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switch ch {
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case '\r', '\n', '\t', '\f', '\v':
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return true
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default:
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return false
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}
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}
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func isAlphanumeric(ch byte) bool {
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return (ch >= 'a' && ch <= 'z') ||
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(ch >= 'A' && ch <= 'Z') ||
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(ch >= '0' && ch <= '9')
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}
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func isDigit(ch byte) bool {
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return ch >= '0' && ch <= '9'
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}
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func isOctalDigit(ch byte) bool {
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return ch >= '0' && ch <= '7'
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}
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func isHexDigit(ch byte) bool {
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return (ch >= '0' && ch <= '9') ||
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(ch >= 'a' && ch <= 'f') ||
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(ch >= 'A' && ch <= 'F')
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}
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