mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-06-25 23:03:15 +00:00
46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
title: ParsingMechanism
|
|
tags: mechanism dev
|
|
created: 201311011307
|
|
modified: 201311011307
|
|
|
|
! Introduction
|
|
|
|
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.
|
|
|
|
TiddlyWiki5 includes ParserModules for several types of tiddler:
|
|
|
|
* WikiText
|
|
* Raw HTML
|
|
* Plain text
|
|
* Images (bitmap, SVG and PDF)
|
|
|
|
The WikiText parser is the most complex, comprising separate individual WikiRuleModules encapsulating each parsing rule.
|
|
|
|
! Parse Trees
|
|
|
|
The output of parsing a tiddler is an object containing a tree of parse nodes corresponding to the original text. For example:
|
|
|
|
```
|
|
> JSON.stringify($tw.wiki.parseText("text/vnd.tiddlywiki","Some //italics// and a {{Transclusion}}.").tree)
|
|
|
|
[
|
|
{type: "element", tag: "p", children: [
|
|
{type: "text", text: "Some "},
|
|
{type: "element", tag: "em", children: [
|
|
{type: "text", text: "italics"}
|
|
]},
|
|
{type: "text", text: " and a "},
|
|
{type: "tiddler", attributes:{
|
|
tiddler: {type: "string", value: "Transclusion"}
|
|
}, children:[
|
|
{type: "transclude", attributes:{
|
|
tiddler: {type: "string", value: "Transclusion"}
|
|
}}
|
|
]},
|
|
{type: "text", text: "."}
|
|
]}
|
|
]
|
|
```
|
|
|
|
Parse tree nodes are plain JavaScript objects, and do not have a prototype.
|