Tree (data format)

User readable binary-compatible streaming hierarchical data format. A simple alternative to JSON, YAML, INI, TOML, partially XML etc.

Features

• No escaping.
• Multiline text support.
• Minimal markup.
• Streaming processing.
• Binary-safe.
• Extensible data model.
• Unlimited hierarchy.

Example

article
	title en \Hello world
	description \Hello World!

article
	title
	    en \Complex example
	    ru \Сложный пример
	description
		\This is multiline raw binary data
		\Escaping isn't required \("_")/

Comparison

	XML	JSON	YAML	TOML	Tree
Size (non minified, approximate assessment)	195%	140%	125%	110%	100%
Complexity (grammar patterns count)	90	30	210	90	10
Well readability	❌	❌	✅	✅	✅
Required escaping for special chars	❌	❌	❌	❌	✅
Streaming processing by design	❌	❌	✅	✅	✅
Extensibility to represent any data model	✅	❌	✅	❌	✅
Broad support by langs and tools	✅	✅	✅	❌	❌

More info

• Home page
• Tree based languages
• Online sandbox

References

• Custom language with sourcemaps support by half hour @ HolyJS'21
• Tree - a single AST to rule over all @ PiterJS (Same @ Undefined)

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