/// <summary>
/// Read Eval Print Loop. Run the given source until it either terminates,
/// or hits the given time limit. When it terminates, if we have new
/// implicit output, print that to the implicitOutput stream.
/// </summary>
/// <param name="sourceLine">Source line.</param>
/// <param name="timeLimit">Time limit.</param>
public void REPL(string sourceLine, double timeLimit = 60)
{
if (parser == null)
{
parser = new Parser();
}
if (vm == null)
{
vm = parser.CreateVM(standardOutput);
vm.interpreter = new WeakReference(this);
}
else if (vm.done && !parser.NeedMoreInput())
{
// Since the machine and parser are both done, we don't really need the
// previously-compiled code. So let's clear it out, as a memory optimization.
vm.GetTopContext().ClearCodeAndTemps();
parser.PartialReset();
}
if (sourceLine == "#DUMP")
{
vm.DumpTopContext();
return;
}
double startTime = vm.runTime;
int startImpResultCount = vm.globalContext.implicitResultCounter;
vm.storeImplicit = (implicitOutput != null);
try {
if (sourceLine != null)
{
parser.Parse(sourceLine, true);
}
if (!parser.NeedMoreInput())
{
while (!vm.done && !vm.yielding)
{
if (vm.runTime - startTime > timeLimit)
{
return; // time's up for now!
}
vm.Step();
}
if (implicitOutput != null && vm.globalContext.implicitResultCounter > startImpResultCount)
{
Value result = vm.globalContext.GetVar(ValVar.implicitResult.identifier);
if (result != null)
{
implicitOutput.Invoke(result.ToString(vm));
}
}
}
} catch (MiniscriptException mse) {
ReportError(mse);
// Attempt to recover from an error by jumping to the end of the code.
vm.GetTopContext().JumpToEnd();
}
}
/// <summary>
/// Read Eval Print Loop. Run the given source until it either terminates,
/// or hits the given time limit. When it terminates, if we have new
/// implicit output, print that to the implicitOutput stream.
/// </summary>
/// <param name="sourceLine">Source line.</param>
/// <param name="timeLimit">Time limit.</param>
public void REPL(string sourceLine, double timeLimit = 60)
{
if (parser == null)
{
parser = new Parser();
}
if (vm == null)
{
vm = parser.CreateVM(standardOutput);
vm.interpreter = new WeakReference(this);
}
if (sourceLine == "#DUMP")
{
vm.DumpTopContext();
return;
}
double startTime = vm.runTime;
int startImpResultCount = vm.globalContext.implicitResultCounter;
vm.storeImplicit = (implicitOutput != null);
try {
if (sourceLine != null)
{
parser.Parse(sourceLine, true);
}
if (!parser.NeedMoreInput())
{
while (!vm.done)
{
if (vm.runTime - startTime > timeLimit)
{
return; // time's up for now!
}
vm.Step();
}
if (implicitOutput != null && vm.globalContext.implicitResultCounter > startImpResultCount)
{
Value result = vm.globalContext.GetVar(ValVar.implicitResult.identifier);
if (result != null)
{
implicitOutput.Invoke(result.ToString(vm));
}
}
}
} catch (MiniscriptException mse) {
ReportError(mse);
// Attempt to recover from an error by jumping to the end of the code.
vm.GetTopContext().JumpToEnd();
}
}