DIRECTORY
BasicTime,
CD,
CDBasics,
CDDesignCache,
CDDirectory,
CDEvents,
CDImports,
CDIO,
CDOps,
CDProperties,
CDSequencer,
CDValue,
CedarProcess,
RefTab,
Rope,
SymTab,
TerminalIO,
TokenIO;

CDImportsImpl: CEDAR PROGRAM 
IMPORTS CD, CDBasics, CDDirectory, CDDesignCache,
CDEvents, CDImports, CDIO, CDOps, CDProperties, CDSequencer, CDValue, CedarProcess, RefTab, Rope, SymTab, TerminalIO, TokenIO
EXPORTS CDImports
SHARES CDDirectory =
BEGIN OPEN CDImports;

ROPE: TYPE = Rope.ROPE;
Object: TYPE = CD.Object;
Design: TYPE = CD.Design;

cacheListKey: ATOM = $CacheList; -- a CDValue key

importsClass: PUBLIC CD.ObjectClass = CD.RegisterObjectClass[$Import, [
drawMe: DrawForImport,
quickDrawMe: QuickDrawReference,
showMeSelected: DrawSelectionForImport,
internalRead: ReadImportOb,
internalWrite: WriteImportOb,
describe: DescribeImport,
interestRect: ImportIR,
xDesign: TRUE
]];

CacheL: TYPE = LIST OF Cache;

EnumerateItsObjects: PROC [me: Object, proc: CDDirectory.EachObjectProc, data: REF] RETURNS [quit: BOOL_FALSE] = {
};

ReplaceDirectChild:  CDDirectory.ReplaceDChildsProc = {
};

FetchImport: PUBLIC PROC [into: Design, objectName, importeeName: ROPE] RETURNS [Object_NIL] = {
cache: Cache _ GetCache[into, importeeName, false];
IF cache#NIL THEN {
WITH SymTab.Fetch[cache.objects, objectName].val SELECT FROM
ob1: Object => {
IF CDDirectory.CompatibleOwner[into, ob1] THEN RETURN [ob1];
[] _ SymTab.Delete[cache.objects, objectName];
};
ENDCASE => NULL;
};
};

CreateImportFromCache: PUBLIC PROC [into: Design, objectName, importeeName: ROPE, load: BOOL] RETURNS [ob: Object_NIL] = {
cache: Cache _ GetCache[into, importeeName, IF load THEN true ELSE false];
ob _ FetchImport[into, objectName, importeeName];
IF ob#NIL THEN RETURN [ob];
IF cache#NIL AND cache.importee=NIL AND load THEN 
[] _ LoadAndBindDesign[into: into, importeeName: importeeName, forceBind: FALSE, allowConflicts: false];
IF cache#NIL AND cache.importee#NIL THEN
ob _ CreateImportWithSource[into, objectName, cache.importee, FALSE];
};

CreateImport: PROC [into: Design, objectName, importeeName: ROPE, ir, bbox: CD.Rect, doCache: BOOL_TRUE] RETURNS [ob: Object] = {
ob _ NEW[CD.ObjectRep_[
bbox: bbox,
class: importsClass,
specific: NEW[ImportRep _ [ir: ir,
objectName: objectName, designName: importeeName 
]]
]];
IF into#NIL THEN {
IF doCache THEN {
cache: Cache _ GetCache[into, importeeName, true];
IF cache#NIL THEN [] _ SymTab.Store[cache.objects, objectName, ob];
};
CDDirectory.SetOwner[into, ob];
}
};

CreateImportWithoutSource: PUBLIC PROC [into: Design, objectName, importeeName: ROPE, ir, bbox: CD.Rect, exact: BoolOrInteractive] RETURNS [ob: Object] = {
cache: Cache _ GetCache[into, importeeName, true];
IF ~CDBasics.NonEmpty[bbox] THEN bbox _ ir;
IF ~CDBasics.NonEmpty[ir] THEN ir _ bbox;
IF exact=true AND ~CDBasics.NonEmpty[ir] THEN RETURN [NIL];
bbox _ CDBasics.Surround[bbox, ir];
ob _ FetchImport[into, objectName, importeeName];
IF ob=NIL AND cache#NIL AND cache.importee#NIL THEN
ob _ CreateImportWithSource[into, objectName, cache.importee, FALSE];
IF ob#NIL THEN {
IF ob.bbox=bbox AND CD.InterestRect[ob]=ir THEN RETURN [ob];
IF exact=false THEN RETURN [ob];
IF exact#true THEN 
IF ~ToBool[exact, Rope.Cat["size missmatch for ", CD.Describe[ob], "enforce exact size"]] 
THEN RETURN [ob];
}; 
ob _ CreateImport[into, objectName, importeeName, ir, bbox, FALSE];
IF cache#NIL THEN [] _ SymTab.Store[cache.objects, objectName, ob];
};
 
CreateImportWithSource: PUBLIC PROC [into: Design, objectName: ROPE, source: Design, exact: BOOL] RETURNS [ob: Object] = {
obx: Object; 
IF source.mutability#readonly THEN ERROR CD.Error[calling];
ob _ FetchImport[into, objectName, source.name];
IF ob#NIL THEN {
IF ~exact THEN RETURN [ob];
IF NARROW[ob.specific, CDImports.ImportSpecific].boundDesign=source THEN RETURN [ob];
ob _ NIL;
};
obx _ CDDirectory.Fetch[source, objectName];
IF obx#NIL THEN {
ob _ NEW[CD.ObjectRep_[
class: importsClass,
bbox: obx.bbox,
specific: NEW[CDImports.ImportRep_[
boundOb: obx,
boundDesign: source,
ir: CD.InterestRect[obx],
objectName: objectName,
designName: source.name
]]
]];
IF into#NIL THEN { 
cache: Cache _ GetCache[into, source.name, true];
IF cache#NIL THEN {
[] _ SymTab.Store[cache.objects, objectName, ob];
IF cache.importee=NIL THEN cache.importee _ source;
};
CDDirectory.SetOwner[into, ob];
};
};
};

DescribeImport: CD.DescribeProc = {
iPtr: ImportSpecific = NARROW[ob.specific];
RETURN [Rope.Cat["reference to ", iPtr.designName, ".", iPtr.objectName]];
};

DrawForImport: CD.DrawProc = {
iPtr: ImportSpecific = NARROW[ob.specific];
IF iPtr.boundOb#NIL THEN pr.drawChild[pr, iPtr.boundOb, trans]
ELSE {
r: CD.Rect = CDBasics.MapRect[CD.InterestRect[ob], trans];
pr.drawRect[pr, r, CD.shadeLayer];
pr.drawComment[pr, r, iPtr.objectName];
}
}; 

QuickDrawReference: CD.DrawProc = {
iPtr: ImportSpecific = NARROW[ob.specific];
IF iPtr.boundOb#NIL THEN 
iPtr.boundOb.class.quickDrawMe[pr, iPtr.boundOb, trans]
ELSE {
r: CD.Rect = CDBasics.MapRect[CD.InterestRect[ob], trans];
pr.drawRect[pr, r, CD.shadeLayer];
pr.drawComment[pr, r, iPtr.objectName];
}
}; 

DrawSelectionForImport: CD.DrawProc = {
iPtr: ImportSpecific = NARROW[ob.specific];
IF iPtr.boundOb#NIL THEN 
iPtr.boundOb.class.showMeSelected[pr, iPtr.boundOb, trans]
ELSE 
pr.drawOutLine[pr, CDBasics.MapRect[CD.InterestRect[ob], trans], CD.selectionLayer]
}; 

ImportIR: PROC [ob: Object] RETURNS [CD.Rect] = {
RETURN [NARROW[ob.specific, ImportSpecific].ir]
};

WriteImportOb: CD.InternalWriteProc = {
iPtr: ImportSpecific = NARROW[ob.specific];
CDIO.WriteRect[h, ob.bbox]; 
CDIO.WriteRect[h, iPtr.ir];
TokenIO.WriteRope[h, iPtr.objectName];
TokenIO.WriteRope[h, iPtr.designName];
};

ReadImportOb: CD.InternalReadProc = {
bbox, ir: CD.Rect; objectName, importeeName: ROPE; ob: Object;
IF CDIO.VersionKey[h] > 15 THEN {
bbox _ CDIO.ReadRect[h]; ir _ CDIO.ReadRect[h];
}
ELSE {
bbox _ CDBasics.RectAt[[0,0], CDIO.ReadPos[h]];
IF CDIO.VersionKey[h] >= 8 THEN ir _ CDIO.ReadRect[h] 
ELSE ir _ bbox;
};
objectName _ TokenIO.ReadRope[h];
importeeName _ TokenIO.ReadRope[h];
ob _ CreateImport[
into: CDIO.DesignInReadOperation[h], 
ir: ir, bbox: bbox, 
objectName: objectName, importeeName: importeeName,
doCache: TRUE
];
IF ob=NIL THEN ERROR;
RETURN [ob]
};

GetCacheList: PUBLIC PROC [design: Design] RETURNS [cacheL: CacheList] = {
WITH CDValue.Fetch[design, cacheListKey, design] SELECT FROM
cacheL: CacheList => RETURN[cacheL];
ENDCASE => {
cacheL _ NEW[CacheListRec _ [list: NIL]];
[] _ CDValue.StoreConditional[boundTo: design, key: cacheListKey, value: cacheL];
RETURN [GetCacheList[design]]
};
};

NameTest: PROC [into: Design, importeeName: ROPE] RETURNS [fail: BOOL_FALSE] = {
IF Rope.IsEmpty[importeeName] THEN {
TerminalIO.PutRope["**can't import design with empty name\n"]; 
RETURN [fail_TRUE]
};
IF Rope.Equal[importeeName, into.name] THEN {
TerminalIO.PutRopes["**can't make circular imports for ", importeeName, "\n"]; 
RETURN [fail_TRUE]
};
};

CheckNaming: PROC [into: Design, importeeName: ROPE] = INLINE {
IF Rope.IsEmpty[importeeName] THEN 
ERROR CD.Error[ec: other, explanation: "can't import design with empty name"];
IF into#NIL AND Rope.Equal[into.name, importeeName] THEN 
ERROR CD.Error[ec: other, explanation: "can't import design with equal name"];
};

ToBool: PROC [b: BoolOrInteractive, r, r2: ROPE_NIL] RETURNS [BOOL] = {
SELECT b FROM
true => RETURN [TRUE];
false => RETURN [FALSE];
ENDCASE => {
TerminalIO.PutRopes[r, r2];
RETURN [TerminalIO.Confirm[r]]
}
};

GetCache: PUBLIC PROC [into: Design, importeeName: ROPE_NIL, createIfNotFound: BoolOrInteractive _ true] RETURNS [cache: Cache_NIL] = {
cacheL: CacheList;
IF Rope.IsEmpty[importeeName] THEN RETURN [NIL]; 
IF into=NIL THEN RETURN [NIL];
IF Rope.Equal[into.name, importeeName] THEN RETURN [NIL]; 
cacheL _ GetCacheList[into];
IF cacheL#NIL THEN
FOR l: CacheL _ cacheL.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", importeeName] THEN {
cache _ NEW[CacheRec _ [
importeeName: importeeName, objects: SymTab.Create[]
]];
cacheL.list _ CONS[cache, cacheL.list];  --should be atomic--
};
};

DoCacheDesign: PUBLIC PROC [into: CD.Design, importee: CD.Design] = {
cache: Cache _ GetCache[into, importee.name];
IF importee.mutability#readonly THEN ERROR;
IF cache#NIL THEN cache.importee _ importee;
};


BindDesign: PROC [importer, importee: Design, allowSizeConflicts: BoolOrInteractive _ true, forceBind: BOOL_FALSE] = {
done: BOOL _ TRUE;
EachObjectProc: CDDirectory.EachObjectProc = {
IF CDImports.IsImport[me] THEN {
imp: CDImports.ImportSpecific _ NARROW[me.specific];
IF Rope.Equal[imp.designName, importee.name] THEN
IF forceBind OR imp.boundOb=NIL THEN
IF ~ReBindObject[importer, me, importee, allowSizeConflicts].ok THEN done _ FALSE
}
};

CheckNaming[importer, importee.name];
IF importer=NIL OR importee=NIL THEN ERROR;
IF importee.mutability#readonly THEN ERROR;
[] _ CDDirectory.EnumerateDesign[design: importer, proc: EachObjectProc];
IF ~done THEN 
TerminalIO.PutRopes["some imported object from ", importee.name, " not bound\n"];
CDOps.Redraw[importer]; 
};

ReBindObject: PUBLIC PROC [design: Design, ob: Object, importee: Design, allowSizeConflicts: BoolOrInteractive _ true] RETURNS [ok: BOOL_FALSE] = {
iPtr: ImportSpecific = NARROW[ob.specific, ImportSpecific];
oldIr, newIr, oldBb, newBb: CD.Rect;
referedOb: Object _ CDDirectory.Fetch[importee, iPtr.objectName].object;
IF referedOb=NIL THEN {
TerminalIO.PutF["object %g not found in directory of %g\n", 
[rope[iPtr.objectName]], [rope[importee.name]]
]; 
RETURN
};
IF ob.immutable THEN {
TerminalIO.PutF["can not re-bind immutable object %g\n", 
[rope[CD.Describe[ob, NIL, design]]]
]; 
RETURN
};
oldIr _ ImportIR[ob]; oldBb _ ob.bbox;
newIr _ CD.InterestRect[referedOb]; newBb _ referedOb.bbox;
IF newIr=oldIr AND newBb=oldBb THEN {
iPtr.boundOb _ referedOb;
iPtr.boundDesign _ importee;
CDDirectory.PropagateChange[ob, design];
ok _ TRUE;
}
ELSE {
r: ROPE _
IF newIr=oldIr THEN "bounding box miss-match for "
ELSE IF newBb=oldBb THEN "interest rect miss-match for "
ELSE "bounding box and interest rect miss-match for ";
TerminalIO.PutRopes[r, iPtr.objectName, " "];
IF allowSizeConflicts=false THEN {
TerminalIO.PutRope["not resolved\n"]; RETURN
};
IF allowSizeConflicts=interactive AND ~TerminalIO.Confirm["size conflict; import anyway"] THEN {
TerminalIO.PutRope["don't resolve\n"]; RETURN
};
IF OccursInDrawing[ob, referedOb] THEN {
TerminalIO.PutF["re-binding %g would cause circularity; object not bound\n",
[rope[CD.Describe[ob]]]
]; 
RETURN
};
iPtr.boundOb _ referedOb;
iPtr.boundDesign _ importee;
ob.bbox _ newBb; iPtr.ir _ newIr; 
IF newIr=oldIr THEN {
trans: CD.Transformation _ [[oldIr.x1-newIr.x1, oldIr.y1-newIr.y1], original];
TerminalIO.PutRopes[" keep interest rect at constant position\n"];
CDDirectory.ReplaceObject[design, ob, ob, trans];
}
ELSE {
TerminalIO.PutRopes[" keep origin at constant position\n"];
CDDirectory.PropagateResize[design, ob];
};
CDDirectory.PropagateChange[ob, design];
ok _ TRUE;
};
};

EnsureCacheing: PROC [into: Design] = {
EachObjectProc: CDDirectory.EachObjectProc = {
IF CDImports.IsImport[me] THEN {
imp: CDImports.ImportSpecific _ NARROW[me.specific];
cache: Cache _ GetCache[into, imp.designName, true];
IF cache#NIL THEN [] _ SymTab.Insert[cache.objects, imp.objectName, me];
}
};
[] _ CDDirectory.EnumerateDesign[design: into, proc: EachObjectProc];
};


LoadAndBindDesign: PUBLIC PROC [into: Design, importeeName: ROPE, allowConflicts: CDImports.BoolOrInteractive_true, forceBind: BOOL_FALSE, useCache: BOOL_FALSE, fileName: Rope.ROPE_NIL, forceFile: BOOL_FALSE] RETURNS [done: BOOL_FALSE] = {
Check: CDDesignCache.CheckProc = {
ok _ TRUE; -- ??? ~HasUnloadedImports[design].yes
};
indirectCaches: CacheList; importee: Design; cache: Cache; 
time: BasicTime.GMT _ BasicTime.nullGMT;
IF into=NIL OR NameTest[into, importeeName].fail THEN RETURN [done_FALSE];
IF ~forceFile THEN importee _ CDDesignCache.Fetch[into, importeeName];
IF importee=NIL OR ~useCache THEN {
importee _ CDDesignCache.GetOrRead[for: into, remoteName: importeeName, remoteFile: fileName, reload: ~useCache, checkFile: TRUE, check: Check].remote;
};
IF importee=NIL THEN {
TerminalIO.PutRopes["load import ", importeeName, " not done\n"]; 
RETURN [FALSE]
};
EnsureCacheing[importee];
EnsureCacheing[into];
indirectCaches _ GetCacheList[importee]; 
IF indirectCaches^.list#NIL THEN TerminalIO.PutRope["there are indirect imports\n"];
cache _ GetCache[into, importeeName, true];
IF cache=NIL THEN RETURN [done_FALSE];
cache.importee _ importee;
BindDesign[importer: into, importee: importee, allowSizeConflicts: allowConflicts, forceBind: forceBind];
FOR list: CacheL _ GetCacheList[into]^, list.rest WHILE list#NIL DO
IF ~Rope.Equal[list.first.importeeName, importeeName] AND list.first.importee#NIL THEN {
cache: Cache _ GetCache[list.first.importee, importeeName, false];
IF cache#NIL THEN {
IF cache.importee=NIL OR forceBind THEN cache.importee _ importee;
};
BindDesign[importer: list.first.importee, importee: importee, allowSizeConflicts: false, forceBind: forceBind];
}
ENDLOOP; 
FOR list: CacheL _ indirectCaches^, list.rest WHILE list#NIL DO
iCache: Cache _ list.first;
IF ~Rope.Equal[iCache.importeeName, into.name] THEN {
originalCache: Cache _ GetCache[into, iCache.importeeName, true];
IF originalCache#NIL THEN iCache.importee _ originalCache.importee;
IF iCache.importee#NIL THEN
BindDesign[importer: importee, importee: iCache.importee, allowSizeConflicts: false];
}
ENDLOOP; 
done _ TRUE;
};   

LoadAndBindAll: PUBLIC PROC [into: CD.Design, allowConflicts: BoolOrInteractive_true, forceBind: BOOL_FALSE] RETURNS [done: BOOL_FALSE] = {
done1: BOOL_TRUE;
CheckOne: PROC [d: CD.Design] = {
IF d#NIL THEN
FOR list: CacheL _ GetCacheList[d]^, list.rest WHILE list#NIL DO
[] _ SymTab.Insert[toTreat, list.first.importeeName, $y];
ENDLOOP; 
};
TreatOne: SymTab.EachPairAction = {
name: Rope.ROPE _ key; cache: Cache;
IF SymTab.Fetch[treated, name].found THEN RETURN;
CedarProcess.CheckAbort[NIL];
IF CDSequencer.Aborted[into] THEN {
TerminalIO.PutRope["interrupted\n"]; done1 _ FALSE; [] _ SymTab.Erase[toTreat]; 
RETURN [quit _ TRUE];
};
IF ~LoadAndBindDesign[into: into, importeeName: name, allowConflicts: allowConflicts, forceBind: forceBind, useCache: TRUE] THEN {
done1 _ FALSE
};

IF ~Rope.Equal[into.name, name] THEN {
cache _ GetCache[into, name];
IF cache#NIL THEN CheckOne[cache.importee];
};
[] _ SymTab.Insert[treated, name, $x];
quit _ TRUE;
};
toTreat: SymTab.Ref _ SymTab.Create[];
treated: SymTab.Ref _ SymTab.Create[];
EnsureCacheing[into];
CheckOne[into];
WHILE SymTab.Pairs[toTreat, TreatOne] DO {} ENDLOOP;
done _ done1;
};

DesignRenameEventProc: CDEvents.EventProc = { 
newName: Rope.ROPE _ NIL; 
WITH x SELECT FROM
r: Rope.ROPE => newName _ r;
ENDCASE => NULL; 
IF design=NIL THEN RETURN;
IF design.mutability=readonly THEN {
TerminalIO.PutF["don't rename design %g to %g; it is read only\n", [rope[design.name]], [rope[newName]]];
RETURN [dont _ TRUE];
};
IF newName#NIL THEN {
cache: Cache _ GetCache[design, newName, false];
IF cache#NIL THEN {
TerminalIO.PutF["don't rename design %g to %g; it would create circular imports or caching problems\n", [rope[design.name]], [rope[newName]]];
RETURN [dont _ TRUE];
};
};
};

LocalCopy: PUBLIC PROC [into: Design, import: Object] RETURNS [Object] = {

InRepList: PROC [rl: CDDirectory.ReplaceList, ob: Object] RETURNS [BOOL_FALSE] = {
FOR list: CDDirectory.ReplaceList _ rl, list.rest WHILE list#NIL DO
IF list.first.old=ob THEN RETURN [TRUE];
ENDLOOP; 
};

ReplaceChildrenByImports: PROC [me: Object, design: Design, fromDesign: Design] = {
replaceList: CDDirectory.ReplaceList _ NIL;

PerChild: CDDirectory.EachObjectProc = { 
child: Object;
IF me.class.composed THEN { 
IF InRepList[replaceList, me] THEN RETURN; -- eliminate duplicates
IF CDDirectory.IsIncluded[fromDesign, me] THEN {
child _ CreateImportWithSource[into: design, objectName: CDDirectory.Name[me, fromDesign], source: fromDesign, exact: FALSE];
IF child=NIL OR CD.InterestRect[child]#CD.InterestRect[me] OR child.bbox#me.bbox THEN 
child _ CreateImportWithoutSource[into: design, objectName: CDDirectory.Name[me, fromDesign], importeeName: fromDesign.name, ir: CD.InterestRect[me], bbox: me.bbox, exact: true];
IF child=NIL THEN ERROR;
}
ELSE {
ca: BOOL; 
[child, ca] _ CDDirectory.Another1[me: me, fromOrNil: fromDesign, into: design];
IF child=NIL THEN ERROR;
IF ~ca THEN
ReplaceChildrenByImports[me: me, design: design, fromDesign: fromDesign];
};
replaceList _ CONS[NEW[CDDirectory.ReplaceRec_[old: me, new: child]], replaceList];
}
};
[] _ CDDirectory.EnumerateChildObjects[me: me, proc: PerChild];
IF replaceList#NIL THEN 
[] _ CDDirectory.ReplaceDirectChild[me: me, design: design, replace: replaceList];
}; --ReplaceChildrenByImports
WITH import.specific SELECT FROM
impPtr: ImportSpecific => {
newOb: Object; ca: BOOL; 
IF impPtr.boundDesign=NIL THEN ERROR;
[newOb, ca] _ CDDirectory.Another1[me: impPtr.boundOb, fromOrNil: impPtr.boundDesign, into: into];
IF newOb=NIL THEN ERROR;
IF ~ca THEN
ReplaceChildrenByImports[me: newOb, design: into, fromDesign: impPtr.boundDesign];
RETURN [newOb]
};
ENDCASE => ERROR CD.Error[calling, "bad object class"]
}; 

Another1: PROC [me: Object, fromOrNil: Design, into: Design, friendly: BOOL] RETURNS [new: CD.Object_NIL, childAccessible: BOOL_TRUE] = {
impPtr: ImportSpecific = NARROW[me.specific]; own: REF;
IF into=fromOrNil AND into#NIL THEN RETURN [me, TRUE];
IF into#NIL THEN {
IF into=impPtr.boundDesign AND impPtr.boundOb#NIL THEN {
RETURN [new_impPtr.boundOb, childAccessible_TRUE];
}; 
IF Rope.Equal[into.name, impPtr.designName] THEN {
x: CD.Object _ CDDirectory.Fetch[into, impPtr.objectName];
IF x#NIL THEN {
new _ x; childAccessible _ TRUE
};
RETURN;
}; 
};
new _ FetchImport[into: into, objectName: impPtr.objectName, importeeName: impPtr.designName];
IF new=NIL AND impPtr.boundOb#NIL AND impPtr.boundDesign#NIL THEN
new _ CreateImportWithSource[into: into, objectName: impPtr.objectName, source: impPtr.boundDesign, exact: FALSE];
IF new=NIL OR impPtr.ir#CD.InterestRect[new] OR me.bbox#new.bbox THEN
new _ CreateImportWithoutSource[into: into, objectName: impPtr.objectName, importeeName: impPtr.designName, ir: impPtr.ir, bbox: me.bbox, exact: true];
IF new=NIL THEN {
cache: Cache _ GetCache[into, impPtr.designName, true];
new _ NEW[CD.ObjectRep _ [
bbox: impPtr.boundOb.bbox,
class: importsClass,
layer: CD.undefLayer,
specific: NEW[ImportRep _ impPtr^]
]];
IF cache#NIL THEN {
[] _ SymTab.Store[cache.objects, impPtr.objectName, new];
IF cache.importee=NIL THEN cache.importee _ impPtr.boundDesign;
CDDirectory.SetOwner[into, new];
}
};
IF new#me THEN {
own _ CDProperties.GetObjectProp[new, $OwnerDesign];
CDProperties.AppendProps[looser: me.properties, winner: new.properties, putOnto: new];
CDProperties.PutObjectProp[new, $OwnerDesign, own];
};
};

Expand: PROC [me: CD.Object, fromOrNil: CD.Design_NIL, into: CD.Design_NIL, friendly: BOOL_FALSE] RETURNS [new: CD.Object_NIL, topAccessible: BOOL_FALSE, childAccessible: BOOL_FALSE] = {
impPtr: ImportSpecific = NARROW[me.specific];
IF impPtr.boundOb=NIL THEN RETURN []; --can not expand unloaded object
IF into#NIL --AND friendly-- THEN {
[me, childAccessible] _ CDDirectory.Another1[me: me, fromOrNil: fromOrNil, into: into];
IF me#NIL THEN {
IF ~CDImports.IsImport[me] THEN RETURN [me, TRUE, childAccessible];
new _ LocalCopy[import: me, into: into];
IF new#NIL THEN RETURN [new, TRUE, TRUE];
};
};
RETURN [impPtr.boundOb, FALSE, FALSE];
};

DeleteListFromSymTab: PROC [ref: SymTab.Ref, list: LIST OF ROPE] = {
FOR l: LIST OF ROPE _ list, l.rest WHILE l#NIL DO
[] _ SymTab.Delete[ref, l.first];
ENDLOOP
};

MergeInImports: PUBLIC PROC [into: Design, importeeName: ROPE] = {
ListFirst: CDDirectory.EachObjectProc = {
WITH me.specific SELECT FROM
imp: CDImports.ImportSpecific => 
IF imp.boundOb#NIL AND Rope.Equal[imp.designName, importeeName, TRUE] THEN obList _ CONS[me, obList];
ENDCASE => {};
};
PutCache: CDDirectory.PutInCacheProc = {
CDProperties.PutObjectProp[cacheOb, $CameFrom, importeeName];
CDProperties.PutObjectProp[cacheOb, $OriginalName, CDDirectory.Name[forOb, NARROW[data]]];
};
RenameEachObject: RefTab.EachPairAction ~ {
new: CD.Object = NARROW [val];
newName: Rope.ROPE = NARROW [CDProperties.GetObjectProp[new, $OriginalName]];
IF NOT RefTab.Insert[alreadyRenamed, new, NIL] THEN RETURN; -- already seen
IF Rope.IsEmpty[newName] THEN RETURN; -- initial object was not named, don't bother
IF NOT CDDirectory.Include[into, new, newName, FALSE] THEN
TerminalIO.PutF["*** %g.%g not included in directory of %g\n", [rope[importeeName]], [rope[newName]], [rope[intoName]]];
};
obList: LIST OF CD.Object _ NIL;
objectCache: RefTab.Ref _ RefTab.Create[];
cache: Cache _ GetCache[into, importeeName, false];
intoName: Rope.ROPE = CD.DesignName[into];
alreadyRenamed: RefTab.Ref _ RefTab.Create[];
[] _ CDDirectory.EnumerateDesign[design: into, proc: ListFirst]; -- build list of bound imports
FOR ol: LIST OF CD.Object _ obList, ol.rest WHILE ol#NIL DO -- list contains only bound imports
imp: CDImports.ImportSpecific = NARROW [ol.first.specific];
new: CD.Object = CDDirectory.AnotherRecursed[me: imp.boundOb, into: into, fromOrNil: imp.boundDesign, cx: objectCache, putInCache: PutCache, data: imp.boundDesign];
IF new=NIL THEN LOOP; -- some problem occured
CDDirectory.ReplaceObject[design: into, old: ol.first, new: new];
IF cache#NIL THEN [] _ SymTab.Delete[cache.objects, imp.objectName];
ENDLOOP;
[] _ RefTab.Pairs[objectCache, RenameEachObject]; -- try renaming all new objects
TerminalIO.PutF["%g objects merged in from %g into %g\n", [integer[RefTab.GetSize[alreadyRenamed]]], [rope[importeeName]], [rope[intoName]]];
RefTab.Erase[objectCache];
RefTab.Erase[alreadyRenamed];
};


HasUnloadedImports: PUBLIC PROC [design: Design, object: CD.Object_NIL, recurse: BOOL_TRUE] RETURNS [yes: BOOL_FALSE, where: LIST OF Object_NIL] = {
checked: RefTab.Ref _ RefTab.Create[];
EachObjectProc: CDDirectory.EachObjectProc = {
IF me.class.xDesign THEN {
WITH me.specific SELECT FROM
imp: CDImports.ImportSpecific => {
IF imp.boundOb=NIL THEN {quit _ TRUE; where _ CONS[me, where]}
ELSE IF recurse THEN {
where _ CONS[me, where];
quit _ CDDirectory.EnumerateObject[ob: imp.boundOb, proc: EachObjectProc, visited: checked];
IF ~quit THEN {
[] _ RefTab.Insert[checked, imp.boundOb, NIL];
where _ where.rest
}
};
}
ENDCASE => {
TerminalIO.PutRopes[CD.Describe[me], " is funny class; we dont know how to check this class for unloaded imports\n"];
};
};
};
IF design#NIL THEN 
yes _ CDDirectory.EnumerateDesign[design: design, proc: EachObjectProc, visited: checked];
IF object#NIL AND ~yes THEN 
yes _ EachObjectProc[object];
};

OccursInDrawing: PUBLIC PROC [x: CD.Object, in: CD.Object] RETURNS [yes: BOOL_FALSE] = {
h: REF HandleRec ~ NEW[HandleRec _ [seen: RefTab.Create[], x: x]];
pr: CD.DrawRef ~ CD.CreateDrawRef[[drawChild: PrunedDrawChild, devicePrivate: h]];
CD.DrawOb[pr, in ! found => {yes_TRUE; CONTINUE}];
}; 

found: ERROR = CODE;
HandleRec: TYPE = RECORD [seen: RefTab.Ref, x: CD.Object];
PrunedDrawChild: CD.DrawProc = {
h: REF HandleRec _ NARROW[pr.devicePrivate];
IF ob=h.x THEN ERROR found;
IF ob.class.composed AND RefTab.Insert[h.seen, ob, $x] THEN 
CD.DrawOb[pr: pr, ob: ob, trans: trans, readOnlyInstProps: readOnlyInstProps]; 
};


DirectoryOp: PROC [me: Object, design: Design, name: ROPE, function: CDDirectory.DirectoryFunction] = {
IF design#NIL AND function#remove THEN { 
iPtr: ImportSpecific = NARROW[me.specific];
cache: Cache _ GetCache[design, iPtr.designName, true];
IF cache#NIL THEN 
[] _ SymTab.Insert[cache.objects, iPtr.objectName, me];
};
};

FindCachedDesign: PUBLIC PROC [designName: Rope.ROPE, fileName: Rope.ROPE_NIL, createdTime: BasicTime.GMT _ BasicTime.nullGMT, checkUnloadedImps: BOOL_FALSE] RETURNS [found: CD.Design_NIL] = {
Check: CDDesignCache.CheckProc = {
ok _ ~checkUnloadedImps OR ~HasUnloadedImports[design].yes
};
RETURN [CDDesignCache.Search[designName, fileName, createdTime, Check]]
};

dirProcs: REF CDDirectory.DirectoryProcs ~ CDDirectory.InstallDirectoryProcs[importsClass, [
directoryOp: DirectoryOp,
enumerateChildObjects: EnumerateItsObjects,
replaceDirectChilds: ReplaceDirectChild,
another: Another1,
expand: Expand
]];
CDValue.RegisterKey[cacheListKey];
CDEvents.RegisterEventProc[$BeforeRenameDesign, DesignRenameEventProc];
END. 

	$CDImportsImpl.mesa   (part of ChipNDale)
Copyright c 1984, 1986, 1987 by Xerox Corporation.  All rights reserved.
Created by Christian Jacobi, March 20, 1984 5:50:51 pm PST 
Last edited by: Christian Jacobi, October 19, 1987 2:24:28 pm PDT 
Jean-Marc Frailong December 3, 1987 7:41:45 pm PST
dont !!!  
the imported objects are not accessible for this design
can't replace children
the imported objects are not accessible for this design
--get the entry in design into telling about importing importeeName 
--No caching involved
--No caching involved
--everything is ok
--size conflict
--check whether we should continue binding
--XXX check circularity
--continue binding
--interest rects match; not only size but also location! in this case we assume
--that it might (probably, but not always) be a conversion problem from cd23 
--enumerates design to make sure it has caches for all direct imports
-- bind
--check all already imported designs for importing the new design
--check the new design for importing of already imported and loaded designs
--The test for circular imports is too weak: it recognizes problems only when imports are 
--cached.  However, in case of interactive operations imports will be cached; bad use from 
--programs does not worry me, since the programs can be rerun after fixing.  
--In case of empty caching: too bad write the design and read it in again, then the cache 
--will be gone  
--imp is an imported and bound object which will be made local to design
--but makes copy of children which are not importable because they don't have a name

--build list of direct children
--replace each direct child by an import

--LocalCopy
--Don't; we better give the real thing back
[new, childAccessible] _ CDDirectory.Another1[me: impPtr.boundOb, fromOrNil: impPtr.boundDesign, into: into, friendly: friendly];
--what about a bbox, ir check?
--Don't; we better give the real thing back
[new, childAccessible] _ CDDirectory.Another1[me: x, fromOrNil: into, into: into, friendly: friendly];
--Includes all the imported and bound objects from importeeName (including  
--their transitive closure; but not indirect imports) into design.
--this is a separate step because we want to modify and enumerate directory independent 
Try to register the import's local copies under their import name if it is possible
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