DIRECTORY
Atom,
Basics,
CD,
CDBasics,
CDDefaultProcs,
CDDirectory,
CDEvents,
CDLayers, 
CDPrivate,
CDProperties,
Imager,
IO,
PrincOps,
RefTab,
Rope,
SafeStorage;

CDImpl: CEDAR MONITOR 
IMPORTS Atom, Basics, CD, CDDefaultProcs, CDDirectory, CDEvents, CDLayers, CDProperties, IO, RefTab, Rope, SafeStorage 
EXPORTS CD, CDPrivate
SHARES CDLayers, CDPrivate = 
BEGIN

Error: PUBLIC ERROR[ec: CD.ErrorCode _ programming, explanation: Rope.ROPE _ NIL] = CODE;
permanent: ZONE = SafeStorage.GetPermanentZone[]; 

layers: PUBLIC REF ARRAY CD.Layer OF CDPrivate.LayerRef = 
permanent.NEW[ARRAY CD.Layer OF CDPrivate.LayerRef]; 

registerTechEvent: CDEvents.EventRegistration = CDEvents.RegisterEventType[$RegisterTechnology];

pureTechRegistration: RefTab.Ref = RefTab.Create[]; -- contains technologies
allTechRegistration: RefTab.Ref = RefTab.Create[]; 

PrivateTRef: TYPE = REF PrivateTRep;
PrivateTRep: PUBLIC TYPE = RECORD [
objectRegisterTab: RefTab.Ref, -- contains object types
layerKeyTab: RefTab.Ref -- contains Layers
];


nilTechnologyPrivate: PrivateTRef = NEW[PrivateTRep _ [
objectRegisterTab: RefTab.Create[], --for technology dependant objects it contains NIL 
layerKeyTab: RefTab.Create[]
]];


RegisterObjectClass: PUBLIC PROC [objectType: ATOM, class: CD.ObjectClassRec, inherit: REF_NIL] RETURNS [CD.ObjectClass] = {
done: BOOL;
c: CD.ObjectClass = permanent.NEW[CD.ObjectClassRec_class];
c.properties _ CD.InitPropRef[];
WITH inherit SELECT FROM
oc: CD.ObjectClass => c.parent _ oc;
a: ATOM => {
oc: CD.ObjectClass _ FetchObjectClass[a, c.technology];
IF oc=NIL THEN ERROR CD.Error[missingRegistration];
c.parent _ oc;
};
ENDCASE => IF inherit#NIL THEN ERROR CD.Error[calling];
IF objectType#NIL THEN c.objectType _ objectType;
IF c.drawMe=NIL THEN c.drawMe _ CDDefaultProcs.DrawMe;
IF c.quickDrawMe=NIL THEN c.quickDrawMe _ CDDefaultProcs.QuickDrawMe;
IF c.showMeSelected=NIL THEN c.showMeSelected _ CDDefaultProcs.ShowMeSelected;
IF c.hitInside=NIL THEN c.hitInside _ CDDefaultProcs.HitInside;
IF c.interestRect=NIL THEN c.interestRect _ CDDefaultProcs.InterestRect;
IF c.describe=NIL THEN c.describe _ CDDefaultProcs.Describe;
IF c.technology=NIL THEN 
done _ RefTab.Insert[nilTechnologyPrivate.objectRegisterTab, objectType, c]
ELSE {
techPriv: PrivateTRef = c.technology.cdPriv;
objectRegisterTab: RefTab.Ref = techPriv.objectRegisterTab;
globFound: BOOL;
x: REF;
[globFound, x] _ RefTab.Fetch[nilTechnologyPrivate.objectRegisterTab, objectType]; 
IF globFound AND x#NIL THEN done _ FALSE
ELSE { 
[] _ RefTab.Insert[nilTechnologyPrivate.objectRegisterTab, objectType, NIL]; 
done _ RefTab.Insert[objectRegisterTab, objectType, c]; -- technology register
}
};
IF ~done THEN ERROR Error[doubleRegistration];
RETURN [c]
};

FetchObjectClass: PUBLIC PROC [objectType: REF, technology: CD.Technology_NIL] RETURNS [CD.ObjectClass] = {
x: REF;
class: CD.ObjectClass _ NIL;
found: BOOL _ FALSE;
IF technology#NIL THEN { -- search in technology table
techPriv: PrivateTRef = technology.cdPriv;
[found, x] _ RefTab.Fetch[techPriv.objectRegisterTab, objectType];
};
IF NOT found THEN { -- search in global table
[found, x] _ RefTab.Fetch[nilTechnologyPrivate.objectRegisterTab, objectType];
};
IF found THEN class _ NARROW[x];
RETURN [class]
}; 

lastLayer: CD.Layer _ 6;

InitiateLayer: PROC [layer: CD.Layer, technology: CD.Technology_NIL, uniqueKey: ATOM] = {
techPriv: PrivateTRef;
layers[layer].technology _ technology;
layers[layer].uniqueKey _ uniqueKey;
CDLayers.MakePaint[layer];
IF technology=NIL THEN techPriv _ nilTechnologyPrivate
ELSE {
techPriv _ technology.cdPriv;
technology.usedLayers _ CONS[layer, technology.usedLayers]
};
[] _ RefTab.Insert[techPriv.layerKeyTab, uniqueKey, layers[layer]];
};

ConvertLayer: PUBLIC ENTRY PROC [technology: CD.Technology, uniqueKey: ATOM, into: CD.Layer] = {
ENABLE UNWIND => NULL;
techPriv: PrivateTRef;
IF uniqueKey=NIL OR uniqueKey=$NIL THEN RETURN WITH ERROR Error[calling, "bad uniqueKey"]; -- avoid problems with NIL as ATOM; any IO routine might use $NIL instead
IF technology=NIL THEN techPriv _ nilTechnologyPrivate
ELSE techPriv _ technology.cdPriv;
[] _ RefTab.Insert[techPriv.layerKeyTab, uniqueKey, layers[into]];
};

NewLayer: PUBLIC ENTRY PROC [technology: CD.Technology_NIL, uniqueKey: ATOM] RETURNS [CD.Layer] = {
ENABLE UNWIND => NULL;
IF uniqueKey=NIL OR uniqueKey=$NIL THEN 
RETURN WITH ERROR Error[calling, "bad uniqueKey"]; 
-- avoid problems with NIL as ATOM; any IO routine might use $NIL instead
IF lastLayer>=CD.layerNum-1 THEN 
RETURN WITH ERROR Error[noResource, "too many layers requested; (probably too many different technologies used)"];
lastLayer _ lastLayer+1;
InitiateLayer[lastLayer, technology, uniqueKey];
RETURN [lastLayer]
};

FetchLayer: PUBLIC PROC [t: CD.Technology, uniqueKey: ATOM] RETURNS [CD.Layer] = {
found: BOOL_FALSE;
l: CD.Layer _ CD.errorLayer;
x: REF;
IF t#NIL THEN {
techPriv: PrivateTRef = t.cdPriv;
[found: found, val: x] _ RefTab.Fetch[techPriv.layerKeyTab, uniqueKey];
};
IF ~found THEN {
[found: found, val: x] _ RefTab.Fetch[nilTechnologyPrivate.layerKeyTab, uniqueKey];
};
IF found THEN l _ NARROW[x, CDPrivate.LayerRef].number;
RETURN [l]
};

LayerTechnology: PUBLIC PROC [l: CD.Layer] RETURNS [CD.Technology] = {
RETURN [layers[l].technology];
};

LayerKey: PUBLIC PROC [l: CD.Layer] RETURNS [ATOM] = {
RETURN [layers[l].uniqueKey];
};

CreateDrawRef: PUBLIC PROC [inf: CD.DrawInformation] RETURNS [dr: CD.DrawRef] = {
dr _ NEW[CD.DrawInformation _ inf];
dr.properties _ NEW[CD.PropList_NIL];
IF dr.drawChild=NIL THEN dr.drawChild_CDDefaultProcs.DrawChild;
IF dr.drawChildSel=NIL THEN dr.drawChildSel_CDDefaultProcs.DrawChildSel;
IF dr.drawRect=NIL THEN dr.drawRect_CDDefaultProcs.DrawRect;
IF dr.drawOutLine=NIL THEN dr.drawOutLine_CDDefaultProcs.ContextOutLine;
IF dr.drawContext=NIL THEN dr.drawContext_CDDefaultProcs.DrawContext;
IF dr.drawComment=NIL THEN dr.drawComment_CDDefaultProcs.DrawComment;
IF dr.stopFlag=NIL THEN dr.stopFlag_NEW[BOOL_FALSE];
IF dr.priorityChecker=NIL THEN dr.priorityChecker _ CDDefaultProcs.IgnorePriority;
IF dr.setGround=NIL THEN dr.setGround _ CDDefaultProcs.IgnoreGround;
};

RegisterTechnology: PUBLIC PROC [key: ATOM, name: Rope.ROPE, lambda: CD.Number] RETURNS [CD.Technology] = {
t: CD.Technology = permanent.NEW[CD.TechnologyRep_[
properties: CD.InitPropRef[],
key: key,
name: IF name#NIL THEN name ELSE Atom.GetPName[key],
lambda: lambda,
usedLayers: NIL,
cdPriv: permanent.NEW[PrivateTRep _ [RefTab.Create[], RefTab.Create[]]]
]];
IF ~RefTab.Insert[allTechRegistration, key, t] THEN {
Error[doubleRegistration, "technology exist already"];
};
[] _ RefTab.Insert[pureTechRegistration, key, t];
[] _ CDEvents.ProcessEvent[eventRegistration: registerTechEvent, design: NIL, x: t];
RETURN[t]
};

DesignName: PUBLIC PROC [design: CD.Design_NIL] RETURNS [r: Rope.ROPE] = {
IF design=NIL THEN RETURN ["NIL design"]
ELSE {
r _ design.name;
IF Rope.IsEmpty[r] THEN TRUSTED {
r _ IO.PutFR["no name [%g]", [cardinal[LOOPHOLE[design, CARD]]]]
};
}
};

Describe: PUBLIC PROC [ob: CD.Object, readOnlyInstProps: CD.PropList_NIL, design: CD.Design, verbosity: NAT_0] RETURNS [r: Rope.ROPE_NIL] = {
Cat: PROC [x: Rope.ROPE] = {
IF r=NIL THEN r _ x ELSE r _ Rope.Cat[r, " ", x]
};
name: Rope.ROPE _ NIL; addr: Rope.ROPE _ NIL;
IF ob=NIL THEN RETURN ["nil object"]; 
IF design#NIL THEN name _ CDDirectory.Name[ob, design];
IF name#NIL THEN r _ Rope.Cat["""", name, """"]
ELSE IF verbosity>0 AND ob.class#NIL AND ob.class.composed THEN 
r _ addr _ IO.PutFR["[%g]", [cardinal[LOOPHOLE[ob]]]];
IF ob.class=NIL THEN {Cat["bad object"]; RETURN}; 
IF ob.class.describe#NIL THEN Cat[ob.class.describe[ob, readOnlyInstProps, verbosity]];
IF Rope.IsEmpty[r] THEN
SELECT TRUE FROM
ob.class.description#NIL => r _ ob.class.description;
ob.class.objectType#NIL => r _ Atom.GetPName[ob.class.objectType];
ENDCASE => r _ "object has bad class";
IF verbosity>0 THEN {
hint: Rope.ROPE _ NIL;
WITH CDProperties.GetObjectProp[ob, $Describe] SELECT FROM
n: Rope.ROPE => hint _ n;
a: ATOM => hint _ Atom.GetPName[a];
ENDCASE => NULL;
IF hint#NIL AND ~Rope.Equal[hint, name] THEN Cat[Rope.Cat["[hint: ", hint, "]"]];
IF ~ob.class.describesSignal THEN
WITH CDProperties.GetListProp[readOnlyInstProps, $SignalName] SELECT FROM
n: Rope.ROPE => Cat[n];
a: ATOM => Cat[Atom.GetPName[a]];
ENDCASE => NULL;
IF addr=NIL THEN
IF verbosity>2 OR ~ob.class.composed THEN
IF verbosity>3 OR ob.class.composed THEN 
r _ IO.PutFR["%g [%g]", [rope[r]], [cardinal[LOOPHOLE[ob]]]];
};
};

ConvertTechnologyKey: PUBLIC PROC [technology: CD.Technology, oldKey: ATOM] = {
IF technology=NIL THEN Error[calling];
IF ~RefTab.Insert[allTechRegistration, oldKey, technology] THEN {
Error[doubleRegistration, "technology key exist already"];
};
};

FetchTechnology: PUBLIC PROC [key: ATOM] RETURNS [tech: CD.Technology] = {
RETURN [NARROW[RefTab.Fetch[allTechRegistration, key].val]]
};

EnumerateTechnologies: PUBLIC PROC [proc: CD.TechnologyEnumerator] RETURNS [quit: BOOL] = {
Action: RefTab.EachPairAction = {
quit _ proc[NARROW[val]]
};
quit _ RefTab.Pairs[pureTechRegistration, Action];
};

DEnumProc: TYPE = PROC [p: CDPrivate.DesignEnumerator] RETURNS [BOOL];
dEnumerators: LIST OF DEnumProc_NIL;

EnumDesigns: PUBLIC PROC [p: CDPrivate.DesignEnumerator] RETURNS [quit: BOOL_FALSE] = {
seen: RefTab.Ref _ RefTab.Create[5];
Inner: CDPrivate.DesignEnumerator = {
IF RefTab.Insert[seen, design, design] THEN quit _ p[design]
};
FOR el: LIST OF DEnumProc _ dEnumerators, el.rest WHILE el#NIL AND ~quit DO
quit _ el.first[Inner];
ENDLOOP;
};

InstallDesignEnumerator: PUBLIC ENTRY PROC [enum: DEnumProc] = {
IF enum#NIL THEN dEnumerators _ CONS[enum, dEnumerators];
};

GetGrid: PUBLIC PROC [design: CD.Design, hint: REF_NIL] RETURNS [g: CD.Number_1] = {
IF getGrid#NIL THEN g _ getGrid[design, hint];
};

getGrid: PROC [design: CD.Design, hint: REF_NIL] RETURNS [CD.Number] _ DefaultGetGrid;

DefaultGetGrid: PROC [design: CD.Design, hint: REF_NIL] RETURNS [CD.Number] = {
RETURN [design.technology.lambda]
};

InstallGetGrid: PUBLIC PROC [g: PROC [design: CD.Design, hint: REF_NIL] RETURNS [CD.Number]] = {
IF g#NIL THEN getGrid _ g;
};

Hash: PUBLIC PROC [x: REF] RETURNS [h: CARDINAL] = {
Munch: PROC [REF] RETURNS [CARDINAL] = TRUSTED MACHINE CODE {
PrincOps.zXOR;
};
WITH x SELECT FROM
ob: CD.Object => {
h _ Munch[ob.class];
h _ Basics.BITXOR[h, ((ob.bbox.x2-ob.bbox.x1) MOD 100B)*1000B];
h _ Basics.BITXOR[h, ((ob.bbox.y2-ob.bbox.y1) MOD 1000B)*100B];
h _ Basics.BITXOR[h, ob.layer];
};
ENDCASE => h _ Munch[x];
};

Equal: PUBLIC PROC[x, y: REF] RETURNS [BOOL] = {
ob1: CD.Object = NARROW[x];
ob2: CD.Object = NARROW[y];
RETURN [
ob1.class=ob2.class AND ob1.bbox=ob2.bbox AND ob1.layer=ob2.layer AND  
CD.InterestRect[ob1]=CD.InterestRect[ob2]
]
};

blueLayer, redLayer, greenLayer, yellowLayer, grayLayer: CD.Layer;

IF registerTechEvent=NIL THEN ERROR;  
FOR l: CD.Layer IN CD.Layer DO
layers[l] _ permanent.NEW[CDPrivate.LayerRec _ [
properties: CD.InitPropRef[],
number: l
]];
layers[l].globalUniqueKey _ layers[l];
ENDLOOP;
InitiateLayer[CD.undefLayer, NIL, $undefLayer];
CDLayers.MakeAbstract[CD.undefLayer];
InitiateLayer[CD.shadeLayer, NIL, $shadeLayer];
InitiateLayer[CD.errorLayer, NIL, $errorLayer];
CDLayers.MakeSuppressIR[CD.errorLayer];
InitiateLayer[CD.backgroundLayer, NIL, $backGround];
CDLayers.MakeAbstract[CD.backgroundLayer];
InitiateLayer[CD.outlineLayer, NIL, $outline];
InitiateLayer[CD.selectionLayer, NIL, $selection];
InitiateLayer[CD.commentLayer, NIL, $comment];

blueLayer _ NewLayer[NIL, $blue];
redLayer _ NewLayer[NIL, $red];
greenLayer _ NewLayer[NIL, $green];
yellowLayer _ NewLayer[NIL, $yellow];
grayLayer _ NewLayer[NIL, $gray];
END. 

JCDImpl.mesa   (part of ChipNDale)
Copyright c 1983, 1987 by Xerox Corporation.  All rights reserved.
Created by: Christian Jacobi, June 24, 1983 5:07 pm 
Last Edited by: Christian Jacobi, March 30, 1987 11:35:53 am PST
--assume everithing gets correct even if all references are lost, 
--don't care about memory area, hint only
--all real technology keys are in stored in both RefTab's
--the convert technology keys are stored only in allTechRegistration   
--This allows enumeration to return each technology just once, independent of convert names   
--still check if it might be global
--global register it used per technology
--may find it but have NIL value: then is technologydependant
--Helps conversion when layers are renamed
--not ENTRY since RefTab.Insert does necessary monitoring and CDEvents.ProcessEvent
--is dangerous

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