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Code Issues Releases Wiki Activity

Add remote inspection of preconfigured filters

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There is no user interface yet, and it is currently hardcoded to inspect the filter "[all[shadows+tiddlers]tag[$:/tags/ViewTemplate]!is[draft]]" which is used in tiddler rendering. You can see the results in the sidebar More -> System starting with "$:/temp/filter-inspection/"
This commit is contained in:
Jeremy Ruston
2025-04-11 13:33:09 +01:00
parent dcb8fa2f86
commit ef92b899ed
7 changed files with 216 additions and 95 deletions
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core/modules/filters.js
+12 -2
View File
@@ -231,11 +231,14 @@ exports.compileFilter = function(filterString,options) {
options = options || {};
var self = this;
var wrappers = options.wrappers || {};
// Invoke the hook to allow the filter to be inspected
wrappers = $tw.hooks.invokeHook("th-filter-evaluation",filterString,wrappers) || wrappers;
// Get the result from the cache if we can
if(!this.filterCache) {
this.filterCache = Object.create(null);
this.filterCacheCount = 0;
}
if(this.filterCache[filterString] !== undefined && !wrappers.prefix && !wrappers.operation && !wrappers.operator) {
if(this.filterCache[filterString] !== undefined && !wrappers.prefix && !wrappers.operation && !wrappers.operator && !wrappers.start && !wrappers.done) {
return this.filterCache[filterString];
}
var filterParseTree;
@@ -379,6 +382,9 @@ exports.compileFilter = function(filterString,options) {
if(!widget) {
widget = $tw.rootWidget;
}
if(wrappers.start) {
wrappers.start(source);
}
var results = new $tw.utils.LinkedList();
self.filterRecursionCount = (self.filterRecursionCount || 0) + 1;
if(self.filterRecursionCount < MAX_FILTER_DEPTH) {
@@ -389,7 +395,11 @@ exports.compileFilter = function(filterString,options) {
results.push("/**-- Excessive filter recursion --**/");
}
self.filterRecursionCount = self.filterRecursionCount - 1;
return results.toArray();
var resultsArray = results.toArray();
if(wrappers.done) {
wrappers.done(resultsArray);
}
return resultsArray;
});
if(this.filterCacheCount >= 2000) {
// To prevent memory leak, we maintain an upper limit for cache size.