public override void Compile(Emitter.Emitter emitter)
{
// check for variable definitions being the only expressions in a block
if (Statements.Count == 1 && (Statements[0] is VarDeclarationNode || Statements[0] is VarSplatNode))
Error(Resources.errVariableDefinitionOnly, Statements[0].Lexem);
emitter.CurrentMethod.Scope.EnterSubScope();
foreach (var curr in Statements)
{
curr.Compile(emitter);
// eliminate dead code
if (curr is ReturnNode || (curr is IfNode && (curr as IfNode).AllPathsReturn))
{
AllPathsReturn = true;
break;
}
// remove clutter from stack
if (!curr.GetExpressionType(emitter).IsAnyOf("", "void"))
emitter.EmitPop();
}
emitter.CurrentMethod.Scope.LeaveSubScope();
}
/// <summary>
/// Generate action and condition (possibly) for the currently defined emitter
/// </summary>
/// <param name="emitter"></param>
private void CompileBody(Emitter.Emitter emitter)
{
// compile action
emitter.CurrentMethod = emitter.FindMethod(EmitterID, "Action");
emitter.MakeMethodVirtual(emitter.CurrentMethod);
LoadClosuredVariables(ActionClosures, emitter);
Action.Compile(emitter);
if (!Action.GetExpressionType(emitter).IsAnyOf("void", ""))
emitter.EmitPop();
emitter.EmitReturn();
// compile condition, if any
if (Condition != null)
{
if (Condition.GetExpressionType(emitter) != "bool")
Error(Resources.errEmitConditionExpected);
emitter.CurrentMethod = emitter.FindMethod(EmitterID, "Condition");
emitter.MakeMethodVirtual(emitter.CurrentMethod);
LoadClosuredVariables(ConditionClosures, emitter);
Condition.Compile(emitter);
emitter.EmitReturn();
}
}