private void operator_click(object sender, EventArgs e)
{
Button button = (Button)sender;
if (result != 0)
{
OpEquals.PerformClick();
equation = button.Text;
CurrentOperation.Text = result + " " + equation;
isOperationPerformed = true;
}
else
{
equation = button.Text;
result = Double.Parse(textBox1.Text);
CurrentOperation.Text = result + " " + equation;
isOperationPerformed = true;
}
}
Expression Parse_OpCompare()
{
Expression expr = Parse_OpSubstring();
for (;;)
{
TokenType op = m_Tokenizer.PeekNextToken().type;
if (op != TokenType.OpEquals && op != TokenType.OpNotEquals)
{
return(expr);
}
m_Tokenizer.ConsumeNextToken();
if (op == TokenType.OpEquals)
{
expr = new OpEquals(expr, Parse_OpSubstring());
}
else
{
expr = new OpNotEquals(expr, Parse_OpSubstring());
}
}
}
Expression Parse_OpCompare()
{
Expression expr = Parse_OpSubstring();
for (;;)
{
TokenType op = m_Tokenizer.PeekNextToken().type;
if (op != TokenType.OpEquals && op != TokenType.OpNotEquals)
return expr;
m_Tokenizer.ConsumeNextToken();
if (op == TokenType.OpEquals)
expr = new OpEquals(expr, Parse_OpSubstring());
else
expr = new OpNotEquals(expr, Parse_OpSubstring());
}
}
