DIRECTORY
CD,
CDBasics,
CDCallSpecific, 
CDDirectory,
CDDirectoryOps,
CDEvents,
CDGenerate,
CDRemote,
CDImports,
CDImportsExtras,
CDInstances,
CDInterestRects,
CDIO,
CDOps,
CDOrient,
CDProperties,
CDValue,
Rope,
TerminalIO,
TokenIO;

CDImportsImpl: CEDAR PROGRAM 
IMPORTS CD, CDBasics, CDDirectory, CDDirectoryOps, CDEvents, CDGenerate, CDRemote, CDInstances, CDInterestRects, CDIO, CDOps, CDOrient, CDProperties, CDValue, Rope, TerminalIO, TokenIO
EXPORTS CDImports, CDImportsExtras
SHARES CDDirectory, CDRemote =
BEGIN


BoolOrInteractive: TYPE = CDImports.BoolOrInteractive;
ReferencePtr: TYPE = CDImports.ReferencePtr;
ReferenceRep: TYPE = CDImports.ReferenceRep;

ImportList: TYPE = CDImports.ImportList;
Import: TYPE = CDImports.Import;

importListKey: ATOM = $ImportList; -- for CDValue

pForReference: REF CD.ObjectClass = CD.RegisterObjectClass[$Import];

EnumerateItsObjects: PROC [me: CD.Object, p: CDDirectory.EnumerateObjectsProc, x: REF] = 
BEGIN
END;

ReplaceDirectChild:  CDDirectory.ReplaceDChildsProc =
BEGIN
END;

InternalCreateReference: PROC [design: CD.Design, 
	size: CD.Position_[1, 1],  --ignored if allowConflicts
	ir: CD.Rect _ [0, 0, -1, -1],
	objectName, importeeName: Rope.ROPE, 
	autoImport: BoolOrInteractive_false,  --creates an import if not already done
	autoCreateOb: BoolOrInteractive_false,  --creates if not found but design available
	allowConflicts: BoolOrInteractive_false,  --allow size conflicts of the object
	include: BOOL_TRUE] RETURNS [CD.Object] =
BEGIN
ob: CD.Object;
rp: ReferencePtr;
import: REF Import = GetImport[design, importeeName, autoImport];
probablySize: CD.Position _ CDBasics.MaxPoint[size, [1, 1]];
iR: CD.Rect;
IF CDBasics.NonEmpty[ir] THEN iR _ ir ELSE iR _ CDBasics.RectAt[[0, 0], probablySize]; 
IF import=NIL THEN RETURN [NIL];
FOR list: LIST OF CD.Object _ import.referenceList, list.rest WHILE list#NIL DO
ob _ list.first;
rp _ NARROW[ob.specificRef, ReferencePtr];
IF Rope.Equal[rp.objectName, objectName] 
AND Rope.Equal[rp.designName, importeeName] THEN {
IF ob.size=size OR allowConflicts=true THEN RETURN [ob]
ELSE IF allowConflicts=interactive AND TerminalIO.UserSaysYes[
text: "size conflict\n", 
label: "ignore?"
] THEN RETURN [ob] 
ELSE RETURN [NIL]
};
ENDLOOP;
IF import.importee#NIL THEN {
found: BOOL;
referedOb: CD.Object;
[found, referedOb] _ CDDirectory.Fetch[import.importee, objectName];
IF ~found THEN {
IF autoCreateOb=false OR (autoCreateOb=interactive AND ~TerminalIO.UserSaysYes[
text: "object not found\n", 
label: "ignore?"
]) THEN RETURN [NIL];
}
ELSE {
IF allowConflicts=true THEN {
probablySize _ referedOb.size;
iR _ CD.InterestRect[referedOb];
};
}
};
ob _ NEW[CD.ObjectRep_[
size: probablySize,
class: pForReference,
layer: CD.combined,
specificRef: NEW[ReferenceRep _ [
objectName: objectName, 
ir: iR,
designName: importeeName 
]]
]];
import.referenceList _ CONS[ob, import.referenceList];
IF include THEN [] _ CDDirectory.Include[design: design, object: ob, alternateName: Rope.Cat[importeeName, ".", objectName]];
IF import.importee#NIL THEN [] _ BindReference[design, ob, import.importee, allowConflicts];
RETURN [ob]
END;

GetReference: PUBLIC PROC [design: CD.Design, objectName, importeeName: Rope.ROPE] RETURNS [ob: CD.Object] =
BEGIN
ob _ InternalCreateReference[design: design, objectName: objectName, importeeName: importeeName, autoCreateOb: false, autoImport: false, allowConflicts: true, include: TRUE];
END;
 
ReferenceName: PROC [me: CD.Object] RETURNS [Rope.ROPE] =
BEGIN
n: Rope.ROPE = CDDirectory.Name[me];
IF Rope.IsEmpty[n] THEN {
rp: ReferencePtr = NARROW[me.specificRef];
RETURN [Rope.Cat[rp.designName, ".", rp.objectName]]
};
RETURN [n]
END;

ShortName: PROC [me: CD.Object, rp: ReferencePtr] RETURNS [Rope.ROPE] = INLINE
BEGIN
n: Rope.ROPE = CDDirectory.Name[me];
IF Rope.IsEmpty[n] THEN {
RETURN [rp.objectName]
};
RETURN [n]
END;

DescribeReference: PROC[me: CD.Object] RETURNS [Rope.ROPE] = 
BEGIN
RETURN [Rope.Concat["reference to ", ReferenceName[me]]]
END;

DrawReference: PROC [inst: CD.Instance, pos: CD.Position, orient: CD.Orientation,
pr: CD.DrawRef] =
BEGIN
rp: ReferencePtr = NARROW[inst.ob.specificRef];
IF rp.boundInstance#NIL THEN {
pr.drawChild[rp.boundInstance, pos, orient, pr];
}
ELSE {
r: CD.Rect = IntRect[inst.ob, pos, orient];
pr.drawRect[r, CD.highLightShade, pr];
pr.drawComment[r, ShortName[inst.ob, rp], pr];
}
END; 

IntRect: PROC [ob: CD.Object, pos: CD.Position, orient: CD.Orientation] RETURNS [CD.Rect] = INLINE
BEGIN
RETURN [CDOrient.MapRect[
itemInCell: CD.InterestRect[ob],
cellSize: ob.size,
cellInstOrient: orient,
cellInstPos: pos
]]
END;

QuickDrawReference: PROC [inst: CD.Instance, pos: CD.Position, orient: CD.Orientation,
pr: CD.DrawRef] =
BEGIN
rp: ReferencePtr = NARROW[inst.ob.specificRef];
IF rp.boundInstance#NIL THEN {
rp.boundInstance.ob.class.quickDrawMe[rp.boundInstance, pos, orient, pr];
}
ELSE {
r: CD.Rect = IntRect[inst.ob, pos, orient];
pr.drawRect[r, CD.highLightShade, pr];
pr.drawComment[r, ShortName[inst.ob, rp], pr];
}
END; 

DrawReferenceSelection: PROC [inst: CD.Instance, pos: CD.Position, orient: CD.Orientation,
pr: CD.DrawRef] =
BEGIN
rp: ReferencePtr = NARROW[inst.ob.specificRef];
IF rp.boundInstance#NIL THEN 
rp.boundInstance.ob.class.showMeSelected[rp.boundInstance, pos, orient, pr]
ELSE 
pr.drawOutLine[IntRect[inst.ob, pos, orient], pr]
END; 

InterestRect: PROC [ob: CD.Object] RETURNS [CD.Rect] =
BEGIN
RETURN [NARROW[ob.specificRef, ReferencePtr].ir]
END;

WriteRect: PROC[r: CD.Rect] =
BEGIN
TokenIO.WriteInt[r.x1];
TokenIO.WriteInt[r.y1];
TokenIO.WriteInt[r.x2];
TokenIO.WriteInt[r.y2];
END;

ReadRect: PROC [] RETURNS [CD.Rect] =
BEGIN
r: CD.Rect;
r.x1 _ TokenIO.ReadInt[];
r.y1 _ TokenIO.ReadInt[];
r.x2 _ TokenIO.ReadInt[];
r.y2 _ TokenIO.ReadInt[];
RETURN [r]
END;

WriteReference: CD.InternalWriteProc -- PROC [me: Object] -- =
BEGIN
rp: ReferencePtr = NARROW[me.specificRef];
TokenIO.WriteInt[me.size.x];
TokenIO.WriteInt[me.size.y];
WriteRect[rp.ir];
TokenIO.WriteRope[rp.objectName];
TokenIO.WriteRope[rp.designName];
END;

ReadReference: CD.InternalReadProc --PROC [] RETURNS [Object]-- =
BEGIN
x: INT = TokenIO.ReadInt[];
y: INT = TokenIO.ReadInt[];
ir: CD.Rect;
objectName: Rope.ROPE;
importeeName: Rope.ROPE;
ob: CD.Object;
IF CDIO.VersionKey[] >= 8 THEN ir _ ReadRect[] 
ELSE ir _ CDBasics.RectAt[[0, 0], [x, y]];
objectName _ TokenIO.ReadRope[];
importeeName _ TokenIO.ReadRope[];
ob _ InternalCreateReference[
design: CDIO.DesignInReadOperation[], 
ir: ir,
size: [x, y], 
objectName: objectName, 
autoCreateOb: true,
importeeName: importeeName,
autoImport: true,
allowConflicts: interactive,
include: FALSE 
];
RETURN [ob]
END;

GetImportList: PUBLIC PROC [design: CD.Design] RETURNS [imp: REF ImportList] =
BEGIN
WITH CDValue.Fetch[boundTo: design, key: importListKey, propagation: design] SELECT FROM
imp: REF ImportList => RETURN[imp];
ENDCASE => {
imp _ NEW[ImportList _ [list: NIL]];
CDValue.Store[boundTo: design, key: importListKey, value: imp];
};
END;

GetImport: PUBLIC PROC [design: CD.Design, importeeName: Rope.ROPE_NIL, createIfNotFound: BoolOrInteractive _ true] RETURNS [REF Import] =
BEGIN

ToBool: PROC[b: BoolOrInteractive, r: Rope.ROPE, default: BOOL_TRUE, r2: Rope.ROPE_NIL] RETURNS [BOOL] =
BEGIN
SELECT b FROM
true => RETURN [TRUE];
false => RETURN [FALSE];
ENDCASE => {
TerminalIO.WriteRope[r];
TerminalIO.WriteRope[r2];
RETURN [TerminalIO.UserSaysYes[r,, default]]
}
END;

mdata: REF Import _ NIL; 
impl: REF ImportList = GetImportList[design];
IF Rope.IsEmpty[importeeName] THEN ERROR CD.Error[ec: other, 
explanation: "design has empty name, but shouldn't"
];
IF impl#NIL THEN
FOR l: LIST OF REF Import _ impl.list, l.rest WHILE l#NIL DO
IF l.first#NIL AND Rope.Equal[l.first.importeeName, importeeName] THEN RETURN [l.first]
ENDLOOP;
IF ToBool[createIfNotFound, "create an import", TRUE, importeeName] THEN {
mdata _ NEW[Import _ [importeeName: importeeName, importee: NIL, referenceList: NIL]];
impl.list _ CONS[mdata, impl.list];  --atomic--
};
RETURN [mdata]
END;

BindImportee: PROC [importer, importee: CD.Design, 
allowSizeConflicts, allowOverload: BoolOrInteractive _ true] =
BEGIN
ENABLE TerminalIO.UserAbort => GOTO UserAborted;
done1: BOOL_TRUE;
mdata: REF Import = GetImport[importer, importee.name];
IF mdata=NIL THEN ERROR;
IF mdata.importee#NIL THEN {
IF allowOverload=false THEN RETURN
ELSE IF allowOverload=interactive THEN
IF NOT TerminalIO.UserSaysYes[
text: "design already loaded; shall overload?\n", 
label: "overload?"] THEN {
TerminalIO.WriteRope["dont overload; not done\n"];
RETURN 
}
};
mdata.importee _ importee;
FOR list: LIST OF CD.Object _ mdata.referenceList, list.rest WHILE list#NIL DO
done1 _ done1 AND BindReference[importer, list.first, mdata.importee, allowSizeConflicts].ok
ENDLOOP;
IF NOT done1 THEN TerminalIO.WriteRope["some import not bound\n"];
CDOps.DelayedRedraw[importer]; 
EXITS
UserAborted => {TerminalIO.WriteRope["aborted, design not bound\n"]};
END;

BindReference: PROC [design: CD.Design, reference: CD.Object, importee: CD.Design, allowSizeConflicts: BoolOrInteractive _ true] RETURNS [ok: BOOL_FALSE] =
BEGIN
ENABLE TerminalIO.UserAbort => GOTO UserAborted;
rp: ReferencePtr = NARROW[reference.specificRef, ReferencePtr];
found: BOOL; 
oldRect, newRect: CD.Rect;
referedOb: CD.Object;
[found, referedOb] _ CDDirectory.Fetch[importee, rp.objectName];
IF NOT found THEN {
TerminalIO.WriteRope["entry "];
TerminalIO.WriteRope[rp.objectName];
TerminalIO.WriteRope[" in "];
TerminalIO.WriteRope[importee.name];
TerminalIO.WriteRope[" not found\n"];
RETURN
};
oldRect _ InterestRect[reference];
newRect _ CD.InterestRect[referedOb];
IF newRect#oldRect THEN {
TerminalIO.WriteRope["object "];
TerminalIO.WriteRope[rp.objectName];
TerminalIO.WriteRope[" has different size; "];
IF CDBasics.SizeOfRect[oldRect]=CDBasics.SizeOfRect[newRect] THEN 
TerminalIO.WriteRope[" has different outer size; "]
ELSE 
TerminalIO.WriteRope[" has different interest size; "];
IF allowSizeConflicts=false THEN {
TerminalIO.WriteRope["not resolved\n"];
RETURN
};
IF allowSizeConflicts=interactive THEN {
IF ~TerminalIO.UserSaysYes[text: "import anyway? ", 
label: "import different sized ob?"] THEN {
TerminalIO.WriteRope["no\n"];
RETURN
};
TerminalIO.WriteRope["yes\n"];
};
};
rp.boundInstance _ CDInstances.NewInstance[ob: referedOb];
rp.boundInstance.location _ [0, 0];
BEGIN
oldSize: CD.Position = reference.size;
oldBase: CD.Position = CDBasics.BaseOfRect[oldRect];
newSize: CD.Position = referedOb.size;
newBase: CD.Position = CDBasics.BaseOfRect[newRect];
IF oldSize#newSize OR oldRect#newRect THEN {
reference.size _ newSize;
rp.ir _ newRect;
CDDirectory.RepositionObject[design: design,
ob: reference, 
oldSize: oldSize, 
baseOff: CDBasics.SubPoints[oldBase, newBase]
];
};
END;
ok _ TRUE;
EXITS
UserAborted => {TerminalIO.WriteRope["aborted, entry not replaced\n"]};
END;

DoImport: PUBLIC PROC [design: CD.Design, importee: CD.Design,
allowOverload, allowConflicts: BoolOrInteractive_true] RETURNS [done: BOOL_FALSE] = 
BEGIN
indirectImport: REF ImportList ~ GetImportList[importee]; 
IF indirectImport^.list#NIL THEN TerminalIO.WriteRope["There are indirect imports\n"];
FOR list: LIST OF REF Import _ indirectImport^, list.rest WHILE list#NIL DO
IF Rope.Equal[list.first.importeeName, design.name] THEN {
TerminalIO.WriteRope["**creates circular imports\n"];
RETURN
}
ENDLOOP; 
BindImportee[importer: design, importee: importee, allowSizeConflicts: allowConflicts, allowOverload: allowOverload];
FOR list: LIST OF REF Import _ GetImportList[design]^, list.rest WHILE list#NIL DO
IF list.first.importee#NIL THEN
BindImportee[importer: list.first.importee, importee: importee, allowSizeConflicts: false, allowOverload: true];
ENDLOOP; 
FOR list: LIST OF REF Import _ indirectImport^, list.rest WHILE list#NIL DO
IF list.first.importee=NIL THEN {
imp: REF Import _ GetImport[design, list.first.importeeName, false];
IF imp#NIL AND imp.importee#NIL THEN
BindImportee[importer: importee, importee: imp.importee, allowSizeConflicts: false, allowOverload: true];
}
ENDLOOP; 
done _ TRUE;
END;   

DesignHasBeenRenamed: CDEvents.EventProc 
--PROC [event: REF, design: CD.Design, x: REF] RETURNS [dont: BOOL_FALSE]-- =
BEGIN
imp: REF Import ~ GetImport[design: design, importeeName: design.name, createIfNotFound: false];
IF imp#NIL THEN {
dont _ TRUE;
TerminalIO.WriteRope["rename causes circularities; not done\n"]
};
END;   

ReplaceChildrenByImports: PROC[me: CD.Object, design: CD.Design, importeeName: Rope.ROPE] =
BEGIN
replaceList: CDDirectory.ReplaceList_NIL;

PerChild: CDDirectory.EnumerateObjectsProc --PROC [me: CD.Object, x: REF] -- =
BEGIN
IF me.class.inDirectory THEN { 
impChild: CD.Object;
FOR list: CDDirectory.ReplaceList _ replaceList, list.rest WHILE list#NIL DO
IF list.first.old=me THEN RETURN -- eliminate duplicates
ENDLOOP; 
impChild _ InternalCreateReference[
design: design, objectName: CDDirectory.Name[me], importeeName: importeeName,
size: me.size, autoImport: true, autoCreateOb: true, allowConflicts: true, include: TRUE
];
replaceList _ CONS[
NEW[CDDirectory.ReplaceRec_[
old: me, 
oldSize: me.size, 
new: impChild, 
newSize: impChild.size, 
off: [0, 0]
]], 
replaceList
];
}
END;
CDDirectory.EnumerateChildObjects[me: me, p: PerChild, x: NIL];
IF replaceList#NIL THEN 
[] _ CDDirectory.DoReplaceDirectChild[me: me, design: design, replace: replaceList];
END;

OneLevelIncludedCopy: PUBLIC PROC [impObject: CD.Object, design: CD.Design] RETURNS [CD.Object] =
BEGIN
WITH impObject.specificRef SELECT FROM
rp: ReferencePtr => {
newOb: CD.Object;
import: REF Import = GetImport[design, rp.designName, false];
IF rp.boundInstance=NIL OR import=NIL OR import.importee=NIL THEN 
ERROR CD.Error[callingError, "OneLevelIncludedCopy impObject not bound "];
newOb _ CDDirectory.Another[me: rp.boundInstance.ob, from: import.importee, to: design];
ReplaceChildrenByImports[me: newOb, design: design, importeeName: import.importeeName];
RETURN [newOb]
};
ENDCASE => ERROR CD.Error[callingError, "OneLevelIncludedCopy impObject not reference"]
END;

Another: PROC [me: CD.Object, from, to: CD.Design] RETURNS [CD.Object] =
BEGIN
rp: ReferencePtr = NARROW[me.specificRef];
newOb: CD.Object = InternalCreateReference[design: to, objectName: rp.objectName, importeeName: rp.designName, autoCreateOb: true, autoImport: true, allowConflicts: true, include: TRUE, size: me.size];
newOb.properties _ CDProperties.AppendProps[looser: me.properties, winner: newOb.properties];
IF newOb=NIL THEN ERROR;
RETURN [newOb];
END;

MergeInImport: PUBLIC PROC [design: CD.Design, importeeName: Rope.ROPE] =
BEGIN
imp: REF Import _ GetImport[design, importeeName, false];
IF imp=NIL THEN {
TerminalIO.WriteRope["MergeInImport not done; design "];
TerminalIO.WriteRope[importeeName];
TerminalIO.WriteRope[" is not imported\n"];
RETURN
}
ELSE IF imp.importee=NIL THEN {
TerminalIO.WriteRope["MerginImport not done; design "];
TerminalIO.WriteRope[importeeName];
TerminalIO.WriteRope[" is not loaded\n"];
RETURN
}
ELSE {
generatorTable: CDGenerate.Table;
importee: CD.Design _ imp.importee; 
objectList: LIST OF CD.Object _ NIL;
doList: LIST OF CD.Object _ NIL;
dontList: LIST OF CD.Object _ NIL;
CDRemote.CacheDesign[for: design, remote: imp.importee];
generatorTable _ CDRemote.GetTable[imp.importeeName];
FOR list: LIST OF CD.Object _ imp.referenceList, list.rest WHILE list#NIL DO
IF NARROW[list.first.specificRef, ReferencePtr].boundInstance#NIL THEN 
doList _ CONS[list.first, doList]
ELSE dontList _ CONS[list.first, dontList];
ENDLOOP;
FOR list: LIST OF CD.Object _ doList, list.rest WHILE list#NIL DO
pr: ReferencePtr = NARROW[list.first.specificRef];
newOb: CD.Object _ CDGenerate.FetchNCall[table: generatorTable, design: design, key: pr.objectName, cache: TRUE];
IF newOb#NIL THEN {
CDDirectory.ReplaceObject[design: design, old: list.first, new: newOb];
[] _ CDDirectoryOps.RemoveObjectFromDirectory[design: design, ob: list.first];
}
ELSE dontList _ CONS[list.first, dontList];
ENDLOOP;
imp.referenceList _ dontList;
}
END;   

HasUnloadedImports: PUBLIC PROC [design: CD.Design] RETURNS [yes: BOOL_FALSE] =
BEGIN
impList: REF CDImports.ImportList = GetImportList[design];
IF impList#NIL THEN
FOR list: LIST OF REF CDImports.Import _ impList^, list.rest WHILE list#NIL DO
IF list.first.importee=NIL THEN {
RETURN [yes _ TRUE]
}
ENDLOOP;
END;

OldSetInterest: PROC [ob: CD.Object, r: CD.Rect] =
BEGIN
cptr: ReferencePtr = NARROW[ob.specificRef];
cptr.ir _ r;
END;

Init: PROC [] = 
BEGIN
rp: REF CDDirectory.DirectoryProcs ~ CDDirectory.InstallDirectoryProcs[pForReference];
rp.enumerateChildObjects _ EnumerateItsObjects;
rp.replaceDirectChilds _ ReplaceDirectChild;
rp.another _ Another;
pForReference.drawMe _ DrawReference;
pForReference.quickDrawMe _ QuickDrawReference;
pForReference.showMeSelected _ DrawReferenceSelection;
pForReference.internalRead _ ReadReference;
pForReference.internalWrite _ WriteReference;
pForReference.describe _ DescribeReference;
pForReference.interestRect _ InterestRect;
CDInterestRects.InstallOldSetInterest[pForReference, OldSetInterest];
CDValue.EnregisterKey[importListKey];
CDEvents.RegisterEventProc[$RenameDesign, DesignHasBeenRenamed];
END; 

Init[];
END. 

êCDImportsImpl.mesa   (part of ChipNDale)
Copyright c 1984, 1985 by Xerox Corporation.  All rights reserved.
by Christian Jacobi, March 20, 1984 5:50:51 pm PST 
last edited Christian Jacobi, August 29, 1985 4:37:42 pm PDT
dont !!! 
rp: ReferencePtr ~ NARROW[me.specificRef];
IF rp.boundInstance#NIL THEN class[rp.boundInstance.ob, x];
-- PROC[me: CD.Object, design: CD.Design, replace: LIST OF REF ReplaceRec] --
dont, don't ERROR:  
don't ERROR, because the client doese not know that imports cannot be changed
--search first for an already imported object object
--already imported object has not been found; make import
-- check for forbidden circular import
-- no circular import
--check already imported designs for importing the new design
--check the new design for importing of already imported designs
-- prevent a renaming which would cause circularity

--build list of direct children
--replace each direct child by an import
--imp is an imported and bound object which will be made local to design
--Includes all the imported and bound objects from importeeName (including  
--their transitive closure; but not indirect imports) into design.
--split the reference list in bounded and not bounded
--make includes for all bounded references  
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