exonware-xwsyntax 0.6.0.16

Universal grammar engine: bidirectional parsing and generation for 100+ syntax formats (328+ grammar files)

xwsyntax

Bidirectional grammars: parse text to an AST, emit text again, or hop formats by reusing the same tree (for example JSON in, SQL out). 100+ grammars (300+ files) covering query languages, data formats, and code. Used by xwquery and editor/Monaco flows.

Company: eXonware.com · Author: eXonware Backend Team · Email: [e-mail]

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Install

pip install exonware-xwsyntax
pip install exonware-xwsyntax[lazy]
pip install exonware-xwsyntax[full]

Runtime deps are declared in pyproject.toml (lark, exonware-xwsystem, exonware-xwnode, exonware-xwlazy wiring). See docs/GUIDE_01_USAGE.md for modes and troubleshooting.

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Quick start

from exonware.xwsyntax import BidirectionalGrammar

grammar = BidirectionalGrammar.load('json')
ast = grammar.parse('{"name": "Alice", "age": 30}')
json_str = grammar.generate(ast)

sql_grammar = BidirectionalGrammar.load('sql')
sql = sql_grammar.generate(ast)

Facade: XWSyntax().parse(text, format_name) or validate(text, format_name).
Discovery: list_grammars_quick(), load_grammar_quick(name).
More code paths: REF_14_DX, API: REF_15_API.

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Examples

Facade parse/validate

from exonware.xwsyntax import XWSyntax

engine = XWSyntax()
ast = engine.parse("a = 1 + 2", format_name="python")
is_valid = engine.validate("a = 1 + 2", format_name="python")

List and load grammars

from exonware.xwsyntax import list_grammars_quick, load_grammar_quick

names = list_grammars_quick()
grammar = load_grammar_quick(names[0])

JSON to SQL via shared AST

from exonware.xwsyntax import BidirectionalGrammar

ast = BidirectionalGrammar.load("json").parse('{"name": "Alice", "age": 30}')
sql = BidirectionalGrammar.load("sql").generate(ast)

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What you get

Area	Contents
Read/write	Grammar-driven parse and generate; avoid hand-maintained per-format maps.
Bidirectional	Round-trip or cross-syntax by swapping grammars on the same AST.
Large grammar set	SQL, Cypher, GraphQL, xwqueryscript, configs, programming languages, markup, storage dialects; 300+ .lark / .json assets.
Downstream	xwquery parsing; Monaco export and codec hooks via xwsystem.

Phase: Alpha. Milestones: REF_22_PROJECT.

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Docs and tests

• Start: docs/INDEX.md
• Usage: docs/GUIDE_01_USAGE.md
• Requirements / status: REF_01_REQ, REF_22_PROJECT
• API / design: REF_15_API, REF_13_ARCH, REF_14_DX
• Tests: REF_51_TEST. Run: python tests/runner.py from repo root.

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License and links

MIT - LICENSE.
Homepage: https://exonware.com · Repository: https://github.com/exonware/xwsyntax

Contributing: CONTRIBUTING.md · Security: SECURITY.md. Version: 0.6.0.16 | Updated: 30-Mar-2026

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