Copyright (C) 1994, Digital Equipment Corp.
Created on Tue Jan 19 14:00:00 PST 1994 by najork
MODULE ObConeGO;
IMPORT ConeGO, ConeGOProxy, ObAux, ObCommand, ObGO, ObInt, ObLib, ObPointProp,
ObProp, ObProtoLoader, ObRealProp, ObSurfaceGO, ObValue, Obliq,
ProxiedObj, SynLocation;
CONST
pkgname = "ConeGO";
***************************************************************************
Wrapper for ConeGO.T
***************************************************************************
TYPE
T = ObSurfaceGO.T BRANDED "ObConeGO.T" OBJECT END;
PROCEDURE AddTObj (cone : ConeGO.T) =
<* FATAL ObValue.Error, ObValue.Exception *>
BEGIN
WITH obj = Obliq.ObjectClone (Obliq.Vals {TProto}),
raw = NEW (T, what := "<a ConeGO.T>", po := cone) DO
Obliq.ObjectUpdate (obj, "raw", raw);
cone.proxy := NEW (ProxiedObj.Proxy, obj := obj);
END;
END AddTObj;
***************************************************************************
Setup procedures
***************************************************************************
PROCEDURE SetupPackage () =
PROCEDURE NewOpCode (name: TEXT; arity: INTEGER; code: Code) : OpCode =
BEGIN
RETURN NEW (OpCode, name := name, arity := arity, code := code);
END NewOpCode;
TYPE
OpCodes = ARRAY OF ObLib.OpCode;
VAR
opCodes: REF OpCodes;
BEGIN
opCodes := NEW (REF OpCodes, NUMBER (Code));
opCodes^ :=
OpCodes {
NewOpCode ("New", 3, Code.New),
NewOpCode ("NewWithPrec", 4, Code.NewWithPrec),
NewOpCode ("Base", -1, Code.Base),
NewOpCode ("Tip", -1, Code.Tip),
NewOpCode ("Radius", -1, Code.Radius),
NewOpCode ("SetBase", 2, Code.SetBase),
NewOpCode ("SetTip", 2, Code.SetTip),
NewOpCode ("SetRadius", 2, Code.SetRadius)
};
ObLib.Register (NEW (Package, name := pkgname, opCodes := opCodes));
ObLib.RegisterHelp (pkgname, Help);
(* DONT KNOW YET WHETHER TO INHIBIT TRANSMISSIONS ... *)
END SetupPackage;
VAR
TProto : ObValue.Val;
PROCEDURE SetupModule (loader : ObProtoLoader.T) =
BEGIN
(*** Retrieve the prototype ***)
loader.load ("ConeGO.obl");
TProto := loader.get ("ConeGO_TProto");
(*** Register the proxy maker ***)
ConeGOProxy.MkProxyT := AddTObj;
END SetupModule;
***************************************************************************
Execution machinery
***************************************************************************
TYPE
Code = {New, NewWithPrec, Base, SetBase, Tip, SetTip, Radius,
SetRadius};
OpCode = ObLib.OpCode OBJECT
code: Code;
END;
Package = ObLib.T OBJECT
OVERRIDES
Eval := DoEval;
END;
PROCEDURE DoEval (self : Package;
opCode : ObLib.OpCode;
<* UNUSED *> arity : ObLib.OpArity;
READONLY args: ObValue.ArgArray;
<* UNUSED *> temp : BOOLEAN;
loc : SynLocation.T) : ObValue.Val
RAISES {ObValue.Error, ObValue.Exception} =
BEGIN
CASE NARROW (opCode, OpCode).code OF
| Code.New =>
WITH base = ObPointProp.GetOverloadedVal (args, 1, self, opCode, loc),
tip = ObPointProp.GetOverloadedVal (args, 2, self, opCode, loc),
rad = ObRealProp.GetOverloadedVal (args, 3, self, opCode, loc),
cone = NEW (ConeGO.T).init () DO
cone.setProp (ConeGO.Base.bind (base));
cone.setProp (ConeGO.Tip.bind (tip));
cone.setProp (ConeGO.Radius.bind (rad));
RETURN cone.proxy.obj;
END;
| Code.NewWithPrec =>
WITH base = ObPointProp.GetOverloadedVal (args, 1, self, opCode, loc),
tip = ObPointProp.GetOverloadedVal (args, 2, self, opCode, loc),
rad = ObRealProp.GetOverloadedVal (args, 3, self, opCode, loc),
prec = ObInt.GetArg (args, 4, self, opCode, loc),
cone = NEW (ConeGO.T).init (prec) DO
cone.setProp (ConeGO.Base.bind (base));
cone.setProp (ConeGO.Tip.bind (tip));
cone.setProp (ConeGO.Radius.bind (rad));
RETURN cone.proxy.obj;
END;
| Code.Base =>
RETURN ObProp.NameToObliq (ConeGO.Base);
| Code.Tip =>
RETURN ObProp.NameToObliq (ConeGO.Tip);
| Code.Radius =>
RETURN ObProp.NameToObliq (ConeGO.Radius);
| Code.SetBase =>
WITH go = ObGO.GetArg (args, 1, self, opCode, loc),
p1 = ObPointProp.GetOverloadedVal (args, 2, self, opCode, loc) DO
go.setProp (ConeGO.Base.bind (p1));
RETURN ObValue.valOk;
END;
| Code.SetTip =>
WITH go = ObGO.GetArg (args, 1, self, opCode, loc),
p2 = ObPointProp.GetOverloadedVal (args, 2, self, opCode, loc) DO
go.setProp (ConeGO.Tip.bind (p2));
RETURN ObValue.valOk;
END;
| Code.SetRadius =>
WITH go = ObGO.GetArg (args, 1, self, opCode, loc),
rad = ObRealProp.GetOverloadedVal (args, 2, self, opCode, loc) DO
go.setProp (ConeGO.Radius.bind (rad));
RETURN ObValue.valOk;
END;
END;
END DoEval;
***************************************************************************
Help
***************************************************************************
PROCEDURE Help (self : ObCommand.T; arg : TEXT; <* UNUSED *> data : REFANY) =
BEGIN
ObAux.Help (self, arg, pkgname);
END Help;
BEGIN
END ObConeGO.