public FirstPass(ASTNode treeNode, ScopeManager mgr)
{
_treeNode = treeNode;
_scopeMgr = mgr;
if (!_scopeMgr.CurrentScope.HasSymbol(GlobalScopeName))
{
TypeClass globalClass = new TypeClass(GlobalScopeName);
globalClass.Descriptor = _scopeMgr.AddClass(globalClass.ClassName, globalClass, null);
//setup built in system methods
foreach (SystemMethod m in SystemMethodManager.Methods())
{
m.FuncInfo.Scope = _scopeMgr.TopScope;
_scopeMgr.AddMethod(m.Name, m.FuncInfo, globalClass, null, true);
}
}
}
public override void VisitInvoke(ASTInvoke n)
{
if (SystemMethodManager.IsSystemMethod(n.Method))
{
n.Actuals.Visit(this);
SystemMethod method = SystemMethodManager.Lookup(n.Method);
method.Emit(_gen);
//store the return type so we can invoke methods and stuff on it.
_lastWalkedType = _typeManager.LookupCilType(method.FuncInfo.ReturnType);
}
else
{
//push who
n.Object.Visit(this);
Type who = _lastWalkedType;
//push actuals
n.Actuals.Visit(this);
//find the method to execute on the given class
MethodBuilderInfo info = _typeManager.GetMethodBuilderInfo(who.Name, n.Method);
_gen.Emit(OpCodes.Callvirt, info.Builder);
//store the return type of the method
_lastWalkedType = info.Builder.ReturnType;
}
}
public ThirdPass(ASTNode treeNode, ScopeManager mgr)
: base(treeNode, mgr)
{
_systemMethods = SystemMethodManager.Methods().ToList();
}
