public static final String toBinary(long integer) {
StringBuilder builder = new StringBuilder();
long temp = 0;
while (integer > 0) {
temp = integer;
integer = (temp >> 1);
builder.append(temp % 2);
}
while (builder.length() < 32) builder.append("0");
return builder.reverse().toString();
}
public TokenTypeEnum GetNextToken() {
StringBuilder strToken = new StringBuilder();
StringBuilder str = new StringBuilder();
str.append(m_strExpr);
if (m_nNextPos >= str.length()) {
m_currToken = new Token();
m_currToken.Type = TokenTypeEnum.T_EOL;
m_currToken.str = new String("EOL");
m_nNextPos = 0;
m_PreviousTokenType = TokenTypeEnum.T_EOL;
return TokenTypeEnum.T_EOL;
}
while (true) {
while (m_nNextPos < str.length() && str.charAt(m_nNextPos++) == ' ') ;
--m_nNextPos;
if (m_nNextPos >= str.length()) {
m_currToken = new Token();
m_currToken.Type = TokenTypeEnum.T_EOL;
m_currToken.str = new String("EOL");
m_nNextPos = 0;
m_PreviousTokenType = TokenTypeEnum.T_EOL;
return TokenTypeEnum.T_EOL;
} else if (isdigit(str.charAt(m_nNextPos))) {
while (m_nNextPos < str.length() && isdigit(str.charAt(m_nNextPos))) {
strToken.append(str.charAt(m_nNextPos));
m_nNextPos++;
}
if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '.') {
strToken.append(str.charAt(m_nNextPos));
m_nNextPos++;
while (m_nNextPos < str.length() && isdigit(str.charAt(m_nNextPos))) {
strToken.append(str.charAt(m_nNextPos));
m_nNextPos++;
}
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_NUMBER;
m_currToken.str = new String(strToken.toString());
m_currToken.Value = Double.valueOf(m_currToken.str).doubleValue();
return TokenTypeEnum.T_NUMBER;
} else {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_NUMBER;
m_currToken.str = new String(strToken.toString());
m_currToken.Value = Double.valueOf(m_currToken.str).doubleValue();
return TokenTypeEnum.T_NUMBER;
}
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '.') {
str.setCharAt(m_nNextPos, '.');
m_nNextPos++;
while (m_nNextPos < str.length() && isdigit(str.charAt(m_nNextPos))) {
strToken.append(str.charAt(m_nNextPos));
m_nNextPos++;
}
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_NUMBER;
m_currToken.str = new String(strToken);
m_currToken.Value = Double.valueOf(m_currToken.str).doubleValue();
return TokenTypeEnum.T_NUMBER;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '(') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_OPAREN;
m_currToken.str = new String("(");
++m_nNextPos;
return TokenTypeEnum.T_OPAREN;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == ')') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_CPAREN;
m_currToken.str = new String(")");
++m_nNextPos;
return TokenTypeEnum.T_CPAREN;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '+') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.str = new String("+");
++m_nNextPos;
m_currToken.Type = TokenTypeEnum.T_PLUS;
return TokenTypeEnum.T_PLUS;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '-') {
m_currToken.str = new String("-");
++m_nNextPos;
m_PreviousTokenType = m_currToken.Type;
if (m_PreviousTokenType == TokenTypeEnum.T_CPAREN
|| m_PreviousTokenType == TokenTypeEnum.T_NUMBER) {
m_currToken.Type = TokenTypeEnum.T_MINUS;
return TokenTypeEnum.T_MINUS;
} else {
m_currToken.Type = TokenTypeEnum.T_UMINUS;
return TokenTypeEnum.T_UMINUS;
}
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '*') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_MULT;
m_currToken.str = new String("*");
++m_nNextPos;
return TokenTypeEnum.T_MULT;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '/') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_DIV;
m_currToken.str = new String("/");
++m_nNextPos;
return TokenTypeEnum.T_DIV;
} else if (m_nNextPos < str.length() && str.charAt(m_nNextPos) == '^') {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_EXP;
m_currToken.str = new String("^");
++m_nNextPos;
return TokenTypeEnum.T_EXP;
} else {
m_PreviousTokenType = m_currToken.Type;
m_currToken.Type = TokenTypeEnum.T_UNKNOWN;
m_currToken.str = new String(str);
++m_nNextPos;
return TokenTypeEnum.T_UNKNOWN;
}
}
}
