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AEON Language Tools

AEON Language Tools

Alto Pelago

|
1 install
| (1) | Free
Syntax highlighting, diagnostics, hover, and completion for the AEON data language.
Installation
Launch VS Code Quick Open (Ctrl+P), paste the following command, and press enter.
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More Info

AEON VS Code integration

This folder contains a VS Code extension providing:

  • a TextMate grammar for basic AEON tokenization
  • a small dark color theme mapping AEON scopes
  • diagnostics from aeon-lsp
  • hover for datatype annotations and reference targets
  • completion for AEON header fields, keys, reference paths, convention ids, and common convention metadata
  • quick fixes for missing GP convention declarations and missing GP security/document sections
  • schema/profile-aware validation via trusted registry settings

Install & test locally

cd ide/vscode/aeon
pnpm install --frozen-lockfile --node-linker=hoisted
# open in Extension Development Host
code --extensionDevelopmentPath=$(pwd)

Open a sample AEON file from a sibling implementation checkout, such as ../aeon/stress-tests/full/full-feature-stress.aeon, to see highlighting.

For language features, build the server first:

cd ../../../aeon/implementations/typescript
pnpm --filter @aeon/aeon-lsp build

Useful local checks:

cd ide/vscode/aeon
pnpm install --frozen-lockfile --node-linker=hoisted
pnpm test:grammar
pnpm test:extension
pnpm package

The extension looks for a bundled server at server/server.js first, then falls back to the sibling implementation build at ../../../../aeon/implementations/typescript/tools/aeon-lsp/dist/server.js. That keeps local development working while leaving room to bundle the language server later.

pnpm package builds and bundles the sibling AEON language server into server/ before producing the .vsix.

Publish an already packaged VSIX with:

pnpm exec vsce publish --packagePath aeon-vscode-0.9.3.vsix

Language feature samples

  • test/fixtures/lsp-sample.aeon
    • basic diagnostics, hover, and reference completion
  • test/fixtures/lsp-conventions-sample.aeon
    • GP document/context/convention/security declarations
    • security-envelope diagnostics
    • convention-aware completions
    • quick-fix entry points for missing convention declarations or envelope sections

What the editor now helps with

  • Security conventions:
    • warns when aeon:envelope is present but GP security conventions are missing
    • warns when declared GP security conventions are missing integrity, signatures, or encryption
    • quick fixes to add missing GP security conventions to aeon:header
    • quick fixes to insert missing envelope sections
  • Document conventions:
    • warns when aeon.gp.document.v1 is declared but aeon:header.document is missing
    • quick fix to add a document metadata block
    • completion for common document fields like title, subject, author, language, and reference
  • Context and namespace conventions:
    • completion for context attribute keys like role, domain, audience, and intent
    • completion for convention attribute keys like ns, unit, currency, precision, and dimensions
    • namespace value completion for @{ns="..."}
    • warnings and fixes when convention/context attributes are used without declaring the corresponding GP convention

Workspace settings:

  • aeon.validation.enabled
  • aeon.validation.contractRegistry
  • aeon.validation.profile
  • aeon.validation.schema

When contractRegistry plus schema/profile ids are set, the editor validates using the trusted registry and fails closed on unknown ids or hash mismatches.

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