mirror of
https://github.com/Jermolene/TiddlyWiki5
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2261fd4b84
It was getting a pain to manage the content in separate places, and I suspect confusing for end users. I think the best time to move the dev content out is when we’ve established the community wiki for TW5, which is a much more natural home for it. In the meantime, a feature that I’m interested in exploring is the ability to hide tiddlers from the UI based on tag. Then the tw5.com wiki could disable all tiddlers tagged ‘dev’ until explicitly overridden by the user.
46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
title: ParsingMechanism
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tags: mechanism
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created: 201311011307
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modified: 201311011307
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! Introduction
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The parsing mechanism analyses the text of a tiddler against a set of parsing rules, producing a tree representing the structure of the text. The RenderingMechanism is used to transform parse trees into render trees of widget nodes.
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TiddlyWiki5 includes ParserModules for several types of tiddler:
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* WikiText
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* Raw HTML
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* Plain text
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* Images (bitmap, SVG and PDF)
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The WikiText parser is the most complex, comprising separate individual WikiRuleModules encapsulating each parsing rule.
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! Parse Trees
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The output of parsing a tiddler is an object containing a tree of parse nodes corresponding to the original text. For example:
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```
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> JSON.stringify($tw.wiki.parseText("text/vnd.tiddlywiki","Some //italics// and a {{Transclusion}}.").tree)
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[
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{type: "element", tag: "p", children: [
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{type: "text", text: "Some "},
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{type: "element", tag: "em", children: [
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{type: "text", text: "italics"}
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]},
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{type: "text", text: " and a "},
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{type: "tiddler", attributes:{
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tiddler: {type: "string", value: "Transclusion"}
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}, children:[
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{type: "transclude", attributes:{
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tiddler: {type: "string", value: "Transclusion"}
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}}
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]},
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{type: "text", text: "."}
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]}
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]
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```
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Parse tree nodes are plain JavaScript objects, and do not have a prototype.
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