CDImports.mesa (part of ChipNDale)
Copyright © 1984, 1985 by Xerox Corporation. All rights reserved.
by Christian Jacobi, March 20, 1984 5:50:51 pm PST
last edited Christian Jacobi, March 25, 1986 1:43:02 pm PST
CDImports: CEDAR DEFINITIONS =
BEGIN
Objects which reference Objects in other designs are called imports.
No circular imports.
IsImport:
PROC [ob:
CD.Object]
RETURNS [
BOOL] =
INLINE {
RETURN [ISTYPE[ob.specificRef, ImportPtr]]
};
importsClass: PRIVATE READONLY CD.ObjectClass;
ImportPtr: TYPE = REF ImportRep;
ImportRep:
TYPE =
RECORD [
--consider READONLY
boundInstance: CD.Instance ← NIL, -- NIL if not yet bound
ir: CD.Rect ← [0, 0, -1, -1],
objectName: Rope.ROPE ← NIL,
designName: Rope.ROPE ← NIL
];
ImportList:
TYPE =
RECORD [list:
LIST
OF
REF ImportDesign];
-- describes all the imports of a design
ImportDesign:
TYPE =
RECORD[
-- consider READONLY
importeeName: Rope.ROPE ← NIL,
loaded: BOOL ← FALSE, --a readonly version of the design is loaded
reservedForCDImports: PRIVATE REF ←
];
-- describes imports of one particular importee-design
BoolOrInteractive: TYPE = {true, false, interactive};
CreateImport:
PROC [into:
CD.Design, objectName, importeeName: Rope.
ROPE]
RETURNS [ob:
CD.Object];
--Creates an import object.
--Design importeeName must be loaded. (to know size of object!)
--Returns nil if not done.
--Multiple creation may return the same object.
Load:
PROC [into:
CD.Design, importeeName: Rope.
ROPE, overload, allowConflicts: BoolOrInteractive←true]
RETURNS [done:
BOOL];
--Load or Reloads an imported design importeeName.
--Creates an import entry into the import list if necessary.
--(importeeName is fetched using CDRemote's FetchDesign)
--Procedure talks to TerminalIO.
--overload: allows reloading if importeeName is already loaded.
--allowConflicts; If conflicts are disabled, objects with (size) conflict will not be loaded.
-- indirect imports
MergeInImports:
PROC [into:
CD.Design, importeeName: Rope.
ROPE];
--Includes all the imported and loaded objects from design importeeName (including
--their transitive closure; but not indirect imports) into the design "into".
GetImportList:
PROC [design:
CD.Design]
RETURNS [
REF ImportList];
-- Returns the import list of the design.
-- Consider the list and its entries READONLY.
GetImportEntry:
PROC [into:
CD.Design, importeeName: Rope.
ROPE, createIfNotFound: BoolOrInteractive�lse]
RETURNS [
REF ImportDesign];
-- Returns an entry of the import list.
-- Consider the returned record READONLY
-- NIL if not found and not created
HasUnloadedImports:
PROC [design:
CD.Design]
RETURNS [
BOOL];
-- Returns "design has imports or imported objects wich are not yet loaded".
END.