public IDaisyExecution Execute(T scope, ContextBundle context)
{
var execution = new DaisyExecution(ast, Mode);
execution.DebugInfo.PerformanceCounter.Start();
var traced = Execute(scope, ast.Root, execution, context);
execution.Outcome = traced.Outcome;
execution.DebugInfo.Trace = traced;
execution.DebugInfo.PerformanceCounter.End();
return(execution);
}
private TraceNode Execute(object scope, IDaisyAstNode node, DaisyExecution daisyExecution, ContextBundle context)
{
daisyExecution.DebugInfo.PerformanceCounter.CountOp();
if (node is AndOperatorNode)
{
var and = node as AndOperatorNode;
var leftTrace = Execute(scope, and.Left, daisyExecution, context);
if (!leftTrace.Outcome)
{
return(new AndOperatorTrace(leftTrace, null, scope, false));
}
var rightTrace = Execute(scope, and.Right, daisyExecution, context);
return(new AndOperatorTrace(leftTrace, rightTrace, scope, leftTrace.Outcome && rightTrace.Outcome));
}
else if (node is OrOperatorNode)
{
var or = node as OrOperatorNode;
var leftTrace = Execute(scope, or.Left, daisyExecution, context);
if (leftTrace.Outcome)
{
return(new OrOperatorTrace(leftTrace, null, scope, true));
}
var rightTrace = Execute(scope, or.Right, daisyExecution, context);
return(new OrOperatorTrace(leftTrace, rightTrace, scope, leftTrace.Outcome || rightTrace.Outcome));
}
else if (node is NotOperatorNode)
{
var not = node as NotOperatorNode;
var trace = Execute(scope, not.Inner, daisyExecution, context);
return(new NotOperatorTrace(trace, scope, !trace.Outcome));
}
else if (node is GroupOperatorNode)
{
var group = node as GroupOperatorNode;
if (group.HasCommand)
{
var link = group.LinkedStatement;
if (link == null)
{
throw new DaisyRuntimeException(string.Format("Group '{0}' was never linked", group.Text));
}
var frames = new List <TraceNode>();
var tracer = BuildTracer();
var result = link.Execute(new InvokationContext()
{
Scope = scope,
Proceed = o =>
{
var frame = Execute(o, @group.Root, daisyExecution, context);
frames.Add(frame);
return(frame.Outcome);
},
Context = context,
Attachments = daisyExecution.Attachments,
Tracer = tracer,
PerformanceCounter = daisyExecution.DebugInfo.PerformanceCounter
});
return(new GroupOperatorTrace(group.Text, tracer.Tracings, frames, scope, result));
}
else
{
var trace = Execute(scope, @group.Root, daisyExecution, context);
return(trace);
}
}
else if (node is StatementNode)
{
var statement = node as StatementNode;
var link = statement.LinkedStatement;
if (link == null)
{
throw new DaisyRuntimeException(string.Format("Statement '{0}' was never linked.", statement.Text));
}
var tracer = BuildTracer();
var result = link.Execute(new InvokationContext()
{
Scope = scope,
Proceed = o => true, //I don't know. True since the empty statement is true?
Context = context,
Attachments = daisyExecution.Attachments,
Tracer = tracer,
PerformanceCounter = daisyExecution.DebugInfo.PerformanceCounter
});
return(new StatementTrace(statement.Text, tracer.Tracings, scope, result));
}
throw new Exception("Don't know how to walk nodes of type: " + node.GetType());
}
