public frRun(frMain form)
{
form1 = form;
InitializeComponent();
}
/// <summary>
/// This method Runs the function.
/// </summary>
/// <param name="frmain1">Link to the main form.</param>
/// <returns>If this function has return value, it returns this value.</returns>
public string Run(frMain frmain1)
{
bool bBreak = false;
bool bEndIfSearch = false;
bool bEndWhile = false;
for (int n = 0; n < code.Length; n++)
{
Application.DoEvents();
if (frmain1.bStartBreaking)
{
break;
}
String s = code[n];
s.Trim();
if (s != "")
{
if ((s[0] == '#') || (s[0] == '='))
{
string cmd;
string param = "";
if (s.IndexOf(' ') >= 0)
{
cmd = s.Substring(0, s.IndexOf(' '));
param = s.Substring(s.IndexOf(' ') + 1);
}
else
cmd = s;
switch (cmd.ToLower())
{
case "#while":
nWhileStack.Add(n);
param = frmain1.processBlanks(param, this);
if (!bEndWhile) //if we must process this if
{
if (!frmain1.processLogicalSeq(param, this)) // param=>false
{
bEndWhile = true;
}
}
break;
case "#endwhile":
if (bEndWhile)
{
nWhileStack.Remove(nWhileStack.Max());
if (nWhileStack.Count == 0)
{
bEndWhile = false;
}
}
else
{
n = nWhileStack.Max() - 1;
nWhileStack.Remove(nWhileStack.Max());
}
break;
case "#if":
nIfStack.Add(n);
param = frmain1.processBlanks(param, this);
if (!bEndIfSearch) //if we must process this if
{
if (!frmain1.processLogicalSeq(param, this)) // param=>false
{
bEndIfSearch = true;
}
}
break;
case "#endif":
if (nIfStack.Count != 0)
{
nIfStack.Remove(nIfStack.Max());
if (nIfStack.Count == 0)
{
bEndIfSearch = false;
}
}
else
{
frmain1.Error("#endif doesn't have an #if to close it!", n + 1);
}
break;
case "#return":
if (bEndIfSearch) break;
sReturn = frmain1.execCmd(cmd, param, this);
break;
case "#goto":
if (bEndIfSearch) break;
int nLine = Convert.ToInt32(param.Trim().Split(' ')[0]);
if (nLine > code.Length)
{
frmain1.Error("Unreachable line - " + nLine.ToString(), n + 1);
bBreak = true;
}
else
{
n = nLine - 2;
}
break;
default:
if ((bEndIfSearch)||(bEndWhile)) break;
frmain1.execCmd(cmd, param, this);
break;
}
if (bBreak) break;
}
else
{
frmain1.Error("Unknown operator", n + 1);
// stop running
break;
}
}
}
return sReturn;
}