public void Evaluate(IEnumerable <object> statements)
{
BeginScope();
foreach (var statement in statements)
{
if (statement is Branch)
{
Branch branch = (Branch)statement;
var branchCommand = new BranchCommand(branch.Left, branch.Right);
branchCommand.Run(this);
}
else if (statement is EndBranch)
{
var endBranchCommand = new EndBranchCommand();
endBranchCommand.Run(this);
}
/* Todo: This breaks the pattern because we can't roll
* up these commands into a list before looping through to run them.
*/
else if (SkipLines)
{
var doNothingCommand = new DoNothingCommand();
doNothingCommand.Run(this);
}
else if (statement is CreateVariable)
{
var createVariable = (CreateVariable)statement;
var createVariableCommand = new CreateVariableCommand(createVariable.Name,
createVariable.Value);
createVariableCommand.Run(this);
}
else if (statement is Assignment)
{
var assignment = (Assignment)statement;
var assignmentCommand = new AssignmentCommand(assignment.Name,
assignment.Value);
assignmentCommand.Run(this);
}
else if (statement is MethodCall)
{
var methodCall = (MethodCall)statement;
var methodCallCommand = new MethodCallCommand("print",
methodCall.Arguments);
methodCallCommand.Run(this);
}
}
EndScope();
}
protected override bool DoResolve(ScriptingContext context)
{
if (Argument.IndexOf ('=') > 0) {
assign = new AssignmentCommand (Argument);
return assign.Resolve (context);
}
return base.DoResolve (context);
}