public IStatus service(Command command, IProcess context)
throws InterruptedException, CoreException {
if (!(command instanceof RepeatWith)) {
return Status.CANCEL_STATUS;
}
RepeatWith repeatWith = (RepeatWith) command;
Command todo = repeatWith.getCommand();
ISession session = context.getSession();
for (Object cmd : repeatWith.getCommands()) {
Command prefix = getCommand(cmd);
IPipe pipe = session.createPipe();
IStatus status = session.execute(prefix, null, pipe).waitFor();
if (!status.isOK()) {
return status;
}
IPipe output = session.createPipe();
status = session.execute(todo, pipe, output).waitFor();
if (!status.isOK()) {
return status;
}
for (Object obj : CoreUtils.readPipeContent(output)) {
context.getOutput().write(obj);
}
}
return Status.OK_STATUS;
}
public IStatus service(Command command, IProcess context)
throws InterruptedException, CoreException {
if (!(command instanceof Let)) {
return Status.CANCEL_STATUS;
}
Let let = (Let) command;
DeclarationContainer locals = getLocals(context);
boolean inputUsed = false;
for (Declaration decl : let.getVals()) {
if (!(decl instanceof Val)) {
continue; // TODO other declarations support
}
Val val = (Val) decl;
if (val.isInput()) {
inputUsed = true;
val.setValue(box(context.getInput().take(Long.MAX_VALUE)));
}
locals.declare(val.getName(), val);
}
return context
.getSession()
.execute(let.getBody(), inputUsed ? null : context.getInput(), context.getOutput())
.waitFor();
}
protected static DeclarationContainer getLocals(IProcess context) {
ISession session = context.getSession();
if (!(session instanceof CommandSession)) {
return null;
}
return ((CommandSession) session).getStack().getDeclarations();
}
public IStatus service(Command command, IProcess context)
throws InterruptedException, CoreException {
int paramInt = ((EmitEMFData) command).getParamInt();
context.getOutput().write(paramInt);
return Status.OK_STATUS;
}