[mv3] Add support for broad scriptlet exception (#@#js())

Author: gorhill

platform/mv3/extension/js/offscreen/make-scriptlets.js

@@ -32,7 +32,7 @@ const worldTemplate = {
     scriptletFunctions: new Map(),
     allFunctions: new Map(),
     args: new Map(),
-    arglists: new Map(),
+    arglists: new Map([['',0]]),
     hostnames: new Map(),
     regexesOrPaths: new Map(),
     matches: new Set(),
@@ -64,6 +64,29 @@ function createScriptletCoreCode(worldDetails, resourceEntry) {
 
 /******************************************************************************/
 
+function compileBroadExclusion(details) {
+    if ( Boolean(details.excludeMatches?.length) === false ) { return; }
+    for ( const worldDetails of Object.values(worlds) ) {
+        for ( const hn of details.excludeMatches ) {
+            if ( isHnRegexOrPath(hn) ) {
+                const refs = worldDetails.regexesOrPaths.get(hn) ?? new Set();
+                if ( refs.size === 0 ) {
+                    worldDetails.regexesOrPaths.set(hn, refs);
+                }
+                refs.add(0);
+                continue;
+            }
+            const refs = worldDetails.hostnames.get(hn) ?? new Set();
+            if ( refs.size === 0 ) {
+                worldDetails.hostnames.set(hn, refs);
+            }
+            refs.add(0);
+        }
+    }
+}
+
+/******************************************************************************/
+
 export function reset() {
     worlds.ISOLATED = structuredClone(worldTemplate);
     worlds.MAIN = structuredClone(worldTemplate);
@@ -72,6 +95,9 @@ export function reset() {
 /******************************************************************************/
 
 export function compile(rulesetId, details) {
+    if ( details.args.length === 0 ) {
+        return compileBroadExclusion(details);
+    }
     if ( details.args[0].endsWith('.js') === false ) {
         details.args[0] += '.js';
     }

platform/mv3/extension/js/offscreen/scriptlet.template.js

@@ -162,7 +162,7 @@ if ( $hasRegexes$ ) {
 }
 
 // Execute scriptlets
-if ( todo.size ) {
+if ( todo.size && todo.has(0) === false ) {
     const $scriptletFunctions$ = self.$scriptletFunctions$;
     const $scriptletArgs$ = self.$scriptletArgs$;
     const $scriptletArglists$ = self.$scriptletArglists$;

src/js/static-dnr-filtering.js

@@ -107,28 +107,25 @@ function addExtendedToDNR(context, parser) {
             context.scriptletFilters = new Map();
         }
         const exception = parser.isException();
-        const args = parser.getScriptletArgs();
+        const args = parser.getScriptletArgs() || [];
         const argsToken = JSON.stringify(args);
         for ( const { hn, not, bad } of parser.getExtFilterDomainIterator() ) {
             if ( bad ) { continue; }
-            if ( exception ) { continue; }
-            let details = context.scriptletFilters.get(argsToken);
-            if ( details === undefined ) {
-                context.scriptletFilters.set(argsToken, details = { args });
+            if ( exception && not ) { continue; }
+            const details = context.scriptletFilters.get(argsToken) ?? {};
+            if ( details.args === undefined ) {
+                context.scriptletFilters.set(argsToken, details);
+                details.args = args;
                 if ( context.trustedSource ) {
                     details.trustedSource = true;
                 }
             }
-            if ( not ) {
-                if ( details.excludeMatches === undefined ) {
-                    details.excludeMatches = [];
-                }
+            if ( exception || not ) {
+                details.excludeMatches ??= [];
                 details.excludeMatches.push(hn);
                 continue;
             }
-            if ( details.matches === undefined ) {
-                details.matches = [];
-            }
+            details.matches ??= [];
             if ( details.matches.includes('*') ) { continue; }
             if ( hn === '*' ) {
                 details.matches = [ '*' ];