private static Factor ParseOperand(Token token, Dictionary<string, Expression> variableMap)
{
switch (token.Type)
{
case TokenType.Integer:
return Factor.GetIntegerFactor(token);
case TokenType.Float:
return Factor.GetFloatFactor(token);
case TokenType.Letter:
return new AlphabeticFactor(token.Value, variableMap);
case TokenType.String:
return new StringFactor(token.Value);
}
throw new SyntaxErrorException("Couldn't parse operand {0}", token.Value);
}
internal static NumericFactor GetIntegerFactor(Token token)
{
var stringVal = token.Value.Replace("⁻", "-");
return new NumericFactor(new Integer(int.Parse(stringVal)));
}
private static bool IsImpliedMultiplication(Token left, Token right)
{
return
(left.Type.IsOperand() && right.Type == TokenType.OpenParenthesis) ||
(left.Type == TokenType.CloseParenthesis && right.Type.IsOperand()) ||
(left.Type == TokenType.CloseParenthesis && right.Type == TokenType.OpenParenthesis) ||
(left.Type.IsOperand() && right.Type == TokenType.Function && FunctionRepository.Get(right.Value).FixType == FixType.PostFix) ||
(left.Type.IsOperand() && right.Type.IsOperand());
}
internal static NumericFactor GetFloatFactor(Token token)
{
var stringVal = token.Value.Replace("⁻", "-");
return new NumericFactor(new Float(double.Parse(stringVal)));
}