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Code Issues Releases Wiki Activity

Merge branch 'master' into parameterised-transclusions

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jeremy@jermolene.com 2022-10-01 10:18:34 +01:00
commit 0a309f4865
4 changed files with 25 additions and 11 deletions
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5
core/modules/filters.js
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@ -12,6 +12,9 @@ Adds tiddler filtering methods to the $tw.Wiki object.
/*global $tw: false */ /*global $tw: false */
"use strict"; "use strict";
/* Maximum permitted filter recursion depth */
var MAX_FILTER_DEPTH = 300;
/* /*
Parses an operation (i.e. a run) within a filter string Parses an operation (i.e. a run) within a filter string
operators: Array of array of operator nodes into which results should be inserted operators: Array of array of operator nodes into which results should be inserted
@ -341,7 +344,7 @@ exports.compileFilter = function(filterString) {
} }
var results = new $tw.utils.LinkedList(); var results = new $tw.utils.LinkedList();
self.filterRecursionCount = (self.filterRecursionCount || 0) + 1; self.filterRecursionCount = (self.filterRecursionCount || 0) + 1;
if(self.filterRecursionCount < 300) { if(self.filterRecursionCount < MAX_FILTER_DEPTH) {
$tw.utils.each(operationFunctions,function(operationFunction) { $tw.utils.each(operationFunctions,function(operationFunction) {
operationFunction(results,source,widget); operationFunction(results,source,widget);
}); });

15
editions/test/tiddlers/tests/data/filters/Recursion.tid Normal file
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@ -0,0 +1,15 @@
title: Filters/Recursion
description: Filter recursion detection
type: text/vnd.tiddlywiki-multiple
tags: [[$:/tags/wiki-test-spec]]
title: Output
\whitespace trim
\define myfilter() [subfilter<myfilter>]
<$text text={{{ [subfilter<myfilter>] }}}/>
+
title: ExpectedResult
<p>/**-- Excessive filter recursion --**/</p>

6
editions/test/tiddlers/tests/data/transclude/Recursion.tid
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@ -6,11 +6,7 @@ tags: [[$:/tags/wiki-test-spec]]
title: Output title: Output
\whitespace trim \whitespace trim
\procedure recurse(a:0) <$transclude $tiddler="Output"/>
<$transclude $variable="recurse" a={{{ [<a>add[1]] }}}/>
\end
<<recurse>>
+ +
title: ExpectedResult title: ExpectedResult

10
editions/tw5.com/tiddlers/widgets/LetWidget.tid
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@ -1,6 +1,6 @@
title: LetWidget title: LetWidget
created: 20220502144738010 created: 20211028115900000
modified: 20220502144738010 modified: 20221001094658854
tags: Widgets tags: Widgets
caption: let caption: let
@ -13,12 +13,12 @@ caption: let
The content of the <<.wid let>> widget is the scope for the value assigned to the variable. The content of the <<.wid let>> widget is the scope for the value assigned to the variable.
|!Attribute |!Description | |!Attribute |!Description |
|//{any attributes}// |Each attribute name specifies a variable name. The attribute value is assigned to the variable | |//{attributes}// |Each attribute name specifies a variable name. The attribute value is assigned to the variable |
<<.from-version "5.3.0">> Previously, variable names were restricted to not start with a dollar sign. That restriction is no longer applied.
Attributes are evaluated in the order they are written. Attributes with the same name are allowed. Each time a duplicate attribute is encountered, it will replace the existing value set by the earlier duplicate. Attributes are evaluated in the order they are written. Attributes with the same name are allowed. Each time a duplicate attribute is encountered, it will replace the existing value set by the earlier duplicate.
<<.note """<<.from-version "5.2.4">> There is no longer any restriction on using variable names that start with the $ character.""">>
! Examples ! Examples
Consider a case where you need to set multiple variables, where some depend on the evaluation of others. Consider a case where you need to set multiple variables, where some depend on the evaluation of others.