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Commitf6018f7

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committed
wip: replace rules with auto-tracking
1 parentac89ce8 commitf6018f7

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5 files changed

+423
-0
lines changed

5 files changed

+423
-0
lines changed
Lines changed: 30 additions & 0 deletions
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import{StyleCollection}from"../injection";
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importtype{
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ContainerContextValue,
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VariableContextValue,
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}from"../reactivity";
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importtype{GetFunction}from"../tracking";
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importtype{Config}from"./useNativeCss";
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exportfunctionupdateRulesNew(
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get:GetFunction,
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originalProps:Record<string,unknown>,
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configs:Config[],
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inheritedVariables:VariableContextValue,
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inheritedContainers:ContainerContextValue,
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){
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letinlineVariables:Record<string,unknown>|undefined;
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letanimated=false;
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for(constconfigofconfigs){
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conststyleRuleSet=[];
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constsource=originalProps[config.source];
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if(typeofsource==="string"){
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constclassNames=source.split(/\s+/);
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for(constclassNameofclassNames){
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styleRuleSet.push(...get(StyleCollection.styles(className)));
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}
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}
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}
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}
Lines changed: 18 additions & 0 deletions
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import{typeComponentType}from"react";
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importtype{Config}from"prettier";
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import{ContainerContext,VariableContext}from"../reactivity";
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import{useDeepWatcher}from"../tracking";
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exportfunctionuseNativeCss<Textendsobject>(
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type:ComponentType<T>,
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originalProps:Record<string,unknown>|undefined|null,
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configs:Config[]=[{source:"className",target:"style"}],
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){
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conststate=useDeepWatcher(()=>{
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return{};
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},[configs,originalProps,VariableContext,ContainerContext]);
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returnnull;
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}

‎src/runtime/native/signals.ts‎

Lines changed: 81 additions & 0 deletions
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// signals.ts
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typeSubscriber=()=>void;
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exportinterfaceSignal<T>{
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_get():T;
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_subs:Set<Subscriber>;
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set(value:T):void;
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subscribe(fn:Subscriber):()=>void;
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}
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exporttypeGetFunction=<T>(sig:Signal<T>)=>T;
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exportfunctionsignal<T>(initialValue:T):Signal<T>{
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letvalue=initialValue;
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constsubscribers=newSet<Subscriber>();
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function_get():T{
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returnvalue;
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}
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functionset(newValue:T):void{
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if(newValue!==value){
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value=newValue;
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for(constfnofsubscribers){
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if(isBatching){
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batchQueue.add(fn);
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}else{
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fn();
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}
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}
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}
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}
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functionsubscribe(fn:Subscriber):()=>void{
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subscribers.add(fn);
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return()=>subscribers.delete(fn);
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}
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return{ _get,_subs:subscribers, set, subscribe};
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}
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// computed
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exportfunctioncomputed<T>(fn:(get:GetFunction)=>T){
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consts=signal<T>(undefinedasunknownasT);
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constcleanupFns=newSet<()=>void>();
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construn=():void=>{
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s.set(fn(get));
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};
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constget:GetFunction=(signal)=>{
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signal._subs.add(run);
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cleanupFns.add(()=>signal._subs.delete(run));
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returnsignal._get();
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};
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run();
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returns;
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}
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// Batching system
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letisBatching=false;
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constbatchQueue=newSet<Subscriber>();
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functionflushBatch():void{
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constqueue=Array.from(batchQueue);
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batchQueue.clear();
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isBatching=false;
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for(constfnofqueue)fn();
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}
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exportfunctionbatch(fn:(get:GetFunction)=>void):void{
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isBatching=true;
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fn((sig)=>sig._get());
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flushBatch();
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}

‎src/runtime/native/tracking.ts‎

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import{use,useState,typeContext}from"react";
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constLOCK=Symbol("react-native-css-lock");
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constIS_EQUAL=Symbol("react-native-css-is-equal");
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interfaceIsEqualObject{
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[IS_EQUAL]:(other:unknown)=>boolean;
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}
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exporttypeGetFunction=<T>(sig:Signal<T>)=>T;
11+
typeSubscriber=()=>void;
12+
13+
exportinterfaceSignal<T>{
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_get():T;
15+
_subs:Set<Subscriber>;
16+
set(value:T):void;
17+
subscribe(fn:Subscriber):()=>void;
18+
}
19+
20+
functioncleanupSubscriptions(subscriptions:Set<()=>void>):void{
21+
for(constdisposeofsubscriptions){
22+
dispose();
23+
}
24+
subscriptions.clear();
25+
}
26+
27+
/**
28+
* A custom built watcher for the library
29+
*/
30+
exportfunctionuseDeepWatcher<
31+
Textendsobject,
32+
Configsextendsobject,
33+
Propsextendsobject,
34+
Variablesextendsobject,
35+
Containersextendsobject,
36+
>(
37+
fn:(get:GetFunction, ...args:[Configs,Props,Variables,Containers])=>T,
38+
deps:[
39+
Configs,
40+
Props|undefined|null,
41+
Context<Variables>,
42+
Context<Containers>,
43+
],
44+
){
45+
const[state,setState]=useState(()=>{
46+
constsubscriptions=newSet<Subscriber>();
47+
48+
constconfigs=deps[0];
49+
constprops=makeAccessTreeProxy(deps[1]??({}asProps));
50+
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constlazyVariables=makeLazyContext(deps[2]);
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constvariables=makeAccessTreeProxy(lazyVariables);
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constlazyContainers=makeLazyContext(deps[3]);
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constcontainers=makeAccessTreeProxy(lazyContainers);
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constget:GetFunction=(signal)=>{
58+
constdispose=signal.subscribe(()=>{
59+
cleanupSubscriptions(subscriptions);
60+
61+
lazyVariables[LOCK]=true;
62+
lazyContainers[LOCK]=true;
63+
64+
setState((s)=>({
65+
...s,
66+
value:fn(get,configs,props,variables,containers),
67+
}));
68+
});
69+
70+
subscriptions.add(dispose);
71+
returnsignal._get();
72+
};
73+
74+
constvalue=fn(get,configs,props,variables,containers);
75+
76+
return{
77+
value,
78+
subscriptions,
79+
deps:[configs,props,variables,containers],
80+
};
81+
});
82+
83+
if(
84+
state.deps.some((dep,index)=>{
85+
return!(depasIsEqualObject)[IS_EQUAL](deps[index]);
86+
})
87+
){
88+
setState((s)=>{
89+
constsubscriptions=s.subscriptions;
90+
cleanupSubscriptions(subscriptions);
91+
92+
constconfigs=deps[0];
93+
constprops=makeAccessTreeProxy(deps[1]??({}asProps));
94+
95+
constlazyVariables=makeLazyContext(deps[2]);
96+
constvariables=makeAccessTreeProxy(lazyVariables);
97+
98+
constlazyContainers=makeLazyContext(deps[3]);
99+
constcontainers=makeAccessTreeProxy(lazyContainers);
100+
101+
constget:GetFunction=(signal)=>{
102+
constdispose=signal.subscribe(()=>{
103+
cleanupSubscriptions(subscriptions);
104+
105+
lazyVariables[LOCK]=true;
106+
lazyContainers[LOCK]=true;
107+
108+
setState((s)=>({
109+
...s,
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value:fn(get,configs,props,variables,containers),
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}));
112+
});
113+
114+
subscriptions.add(dispose);
115+
returnsignal._get();
116+
};
117+
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return{
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value:fn(get,configs,props,variables,containers),
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subscriptions:s.subscriptions,
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deps:[configs,props,variables,containers],
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};
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});
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}
125+
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returnstate.value;
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}
128+
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functionmakeLazyContext<Textendsobject>(context:React.Context<T>){
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letlocked=false;
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letctx:T|undefined;
132+
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returnnewProxy(
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{},
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{
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get(_,prop,receiver){
137+
if(prop===LOCK){
138+
locked=true;
139+
returnundefined;
140+
}
141+
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if(locked){
143+
if(ctx===undefined){
144+
return;
145+
}
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returnReflect.get(ctx,prop,receiver);
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}
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ctx??=makeAccessTreeProxy(use(context));
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returnReflect.get(ctx,prop,receiver);
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},
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},
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)asT&{[LOCK]:true};
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}
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functionmakeAccessTreeProxy<Textendsobject>(value:T):T{
158+
constbranches=newMap<keyofT,object>();
159+
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returnnewProxy(value,{
161+
get(target,prop,receiver){
162+
if(prop===IS_EQUAL){
163+
return(other:T)=>{
164+
return(
165+
Object.is(target,other)||
166+
Array.from(branches).every(([key,child])=>{
167+
returntypeofchild==="object"&&IS_EQUALinchild
168+
?(childasIsEqualObject)[IS_EQUAL](other[key])
169+
:Object.is(child,other[key]);
170+
})
171+
);
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};
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}
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constvalue=Reflect.get(target,prop,receiver);
176+
177+
if(typeofvalue==="object"&&value!==null){
178+
constproxy=makeAccessTreeProxy(value);
179+
branches.set(propaskeyofT,proxy);
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returnproxy;
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}else{
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returnvalue;
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}
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},
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});
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}

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