lonely-tiger/utils/Utils.c

#include "utils/Utils.h"

bool isLetter(int c) {
    return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}

bool isNumber(int c) {
    return c >= '0' && c <= '9';
}

bool isAllowedInName(int c) {
    return isLetter(c) || isNumber(c) || c == '_';
}