Basic syntax highlighting and file recognition

CHANGELOG.md

@@ -0,0 +1,24 @@
+# Changelog
+
+## [0.1.0] - 2025-12-24
+
+### Added
+- Syntax highlighting for `.toon` files
+- File recognition with `.toon` extension
+- Language configuration with proper indentation and brackets
+- TextMate grammar for TOON syntax
+- Basic example file
+
+### Grammar (spec-compliant)
+- Array header syntax: `key[N]: v1,v2` and `key[N]{f1,f2}:` tabular headers
+- Dotted key support: `user.name: value`
+- List item markers: `- value`
+- Strings (quoted), numbers, booleans, null values
+- No comment syntax (TOON has none per spec)
+
+## [0.0.1] - 2025-12-24
+
+### Added
+- Initial project setup with TypeScript and build pipeline
+- Basic extension scaffolding
+- Development tooling (ESLint, tsdown, pnpm)

README.md

@@ -1,52 +1,54 @@
-# TOON Format for Visual Studio Code
+# TOON for VS Code
 
-> **⚠️ Development Status:** This extension is in early development. Bare minimum setup for team collaboration.
-
-Visual Studio Code extension for TOON format support. TOON is a compact, human-readable serialization format for LLM contexts with 30-60% token reduction vs JSON.
+VS Code extension for TOON (Token-Oriented Object Notation) format.
 
 ## Features
 
-Currently in development. Planned features:
+- **Syntax highlighting** for `.toon` files
+- **File recognition** with `.toon` extension
+- **Language support** with proper indentation and brackets
 
-- Syntax highlighting for `.toon` files
-- Format validation and error detection
-- Code formatting and auto-completion
-- Integration with TOON specification
+## Example
 
-## Installation
+```toon
+name: John Doe
+age: 30
+active: true
 
-This extension is not yet published to the Visual Studio Marketplace. To install locally:
+address:
+  street: 123 Main St
+  city: New York
 
-```bash
-git clone https://github.com/toon-format/vscode.git
-cd toon-vscode
-pnpm install
-pnpm build
+hobbies[3]: reading,coding,hiking
+
+projects[2]{id,name,status}:
+  1,Alpha,active
+  2,Beta,completed
 ```
 
+## Status
+
+**v0.1.0** - Basic syntax highlighting and file recognition ✅
+
+## Roadmap
+
+- **v0.0.x** - Initial project setup ✅
+- **v0.1.x** - Basic syntax highlighting ✅
+- **v0.2.x** - Format validation (next)
+- **v0.3.x** - Code formatting and auto-completion (planned)
+- **v1.0.0** - First stable release (planned)
+
 ## Development
 
 ```bash
-# Setup
-git clone https://github.com/toon-format/vscode.git
-cd toon-vscode
 pnpm install
-
-# Build
 pnpm build
+```
 
-# Development mode (watch)
-pnpm dev
-
-# Run linting
-pnpm lint
-
-# Type check
-pnpm test:types
+## Links
 
-# Package extension
-pnpm package
-```
+- [TOON Specification](https://github.com/toon-format/spec)
+- [Report Issues](https://github.com/toon-format/vscode/issues)
 
 ## Project Status & Roadmap
 

docs/README.md

@@ -1,11 +1,21 @@
-# TOON VSCode Extension Documentation
+# TOON Extension Docs
 
-This directory will contain comprehensive documentation for the TOON VSCode extension.
+Basic documentation for the TOON VS Code extension.
 
-## Coming Soon
+## Quick Reference
 
-- Installation guide
-- Feature documentation
-- Configuration options
-- Development guide
-- API reference
+- **File extension**: `.toon`
+- **Format**: Indentation-based like YAML, tabular arrays like CSV
+- **Arrays**: `key[N]: v1,v2,v3` or tabular `key[N]{f1,f2}:`
+- **Dotted keys**: `user.name: value`
+
+## Example
+
+```toon
+name: Example
+user.role: admin
+items[3]: a,b,c
+rows[2]{id,name}:
+  1,Alice
+  2,Bob
+```

examples/basic.toon

@@ -0,0 +1,15 @@
+name: John Doe
+age: 30
+active: true
+
+address:
+  street: 123 Main St
+  city: New York
+
+hobbies[3]: reading,coding,hiking
+
+projects[2]{id,name,status}:
+  1,Alpha,active
+  2,Beta,completed
+
+user.role: admin

language-configuration.json

@@ -0,0 +1,20 @@
+{
+  "brackets": [
+    ["[", "]"],
+    ["{", "}"]
+  ],
+  "autoClosingPairs": [
+    { "open": "[", "close": "]" },
+    { "open": "{", "close": "}" },
+    { "open": "\"", "close": "\"" }
+  ],
+  "surroundingPairs": [
+    ["[", "]"],
+    ["{", "}"],
+    ["\"", "\""]
+  ],
+  "indentationRules": {
+    "increaseIndentPattern": "^\\s*(?:[A-Za-z_][A-Za-z0-9_.]*|\"[^\"]*\")(?:\\[\\d+[|\\t]?\\](?:\\{[^}]*\\})?)?:\\s*$",
+    "decreaseIndentPattern": "^\\s*$"
+  }
+}

package.json

@@ -3,7 +3,7 @@
   "name": "toon",
   "displayName": "Token-Oriented Object Notation (TOON) Support",
   "type": "module",
-  "version": "0.0.1",
+  "version": "0.1.0",
   "packageManager": "pnpm@10.23.0",
   "description": "Visual Studio Code extension for TOON format support",
   "license": "MIT",
@@ -18,7 +18,10 @@
   "keywords": [
     "toon",
     "format",
-    "serialization"
+    "serialization",
+    "llm",
+    "token-efficient",
+    "json-alternative"
   ],
   "categories": [
     "Programming Languages",
@@ -30,10 +33,25 @@
     "node": ">=24.0.0"
   },
   "contributes": {
+    "languages": [
+      {
+        "id": "toon",
+        "aliases": ["TOON", "toon"],
+        "extensions": [".toon"],
+        "configuration": "./language-configuration.json"
+      }
+    ],
+    "grammars": [
+      {
+        "language": "toon",
+        "scopeName": "source.toon",
+        "path": "./syntaxes/toon.tmLanguage.json"
+      }
+    ],
     "commands": [
       {
-        "command": "toon.helloWorld",
-        "title": "TOON: Hello World"
+        "command": "toon.hello",
+        "title": "TOON: Hello"
       }
     ]
   },

src/extension.ts

@@ -1,12 +1,12 @@
 import * as vscode from 'vscode'
 
 export function activate(context: vscode.ExtensionContext): void {
-  // Register the hello world command
-  const disposable = vscode.commands.registerCommand('toon.helloWorld', () => {
-    vscode.window.showInformationMessage('Hello World from TOON!')
+  // Basic hello command for initial setup
+  const helloCommand = vscode.commands.registerCommand('toon.hello', () => {
+    vscode.window.showInformationMessage('TOON extension activated! Ready for development.')
   })
 
-  context.subscriptions.push(disposable)
+  context.subscriptions.push(helloCommand)
 }
 
 export function deactivate(): void {

syntaxes/toon.tmLanguage.json

@@ -0,0 +1,82 @@
+{
+  "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
+  "name": "TOON",
+  "scopeName": "source.toon",
+  "patterns": [
+    { "include": "#tabular-header" },
+    { "include": "#array-header" },
+    { "include": "#list-item" },
+    { "include": "#key-value" }
+  ],
+  "repository": {
+    "tabular-header": {
+      "comment": "§6: key[N]{f1,f2}: or key[N|]{f1|f2}: or key[N\t]{f1\tf2}:",
+      "match": "^(\\s*)([A-Za-z_][A-Za-z0-9_.]*|\"[^\"]*\")(\\[\\d+[|\\t]?\\])(\\{[^}]*\\})(:)(.*)",
+      "captures": {
+        "2": { "name": "entity.name.tag.toon" },
+        "3": { "name": "constant.numeric.toon" },
+        "4": { "name": "entity.other.attribute-name.toon" },
+        "5": { "name": "punctuation.separator.key-value.toon" },
+        "6": { "patterns": [{ "include": "#values" }] }
+      }
+    },
+    "array-header": {
+      "comment": "§6: key[N]: or key[N|]: or key[N\t]: — also root [N]:",
+      "match": "^(\\s*)([A-Za-z_][A-Za-z0-9_.]*|\"[^\"]*\")?(\\[\\d+[|\\t]?\\])(:)(.*)",
+      "captures": {
+        "2": { "name": "entity.name.tag.toon" },
+        "3": { "name": "constant.numeric.toon" },
+        "4": { "name": "punctuation.separator.key-value.toon" },
+        "5": { "patterns": [{ "include": "#values" }] }
+      }
+    },
+    "list-item": {
+      "comment": "§9.4, §10: list item starting with '- '",
+      "match": "^(\\s*)(-)( )(.*)",
+      "captures": {
+        "2": { "name": "punctuation.definition.list.begin.toon" },
+        "4": { "patterns": [{ "include": "#tabular-header" }, { "include": "#array-header" }, { "include": "#key-value" }, { "include": "#values" }] }
+      }
+    },
+    "key-value": {
+      "comment": "§7.3, §8: simple or dotted key followed by colon",
+      "match": "^(\\s*)([A-Za-z_][A-Za-z0-9_.]*|\"[^\"]*\")(:)(.*)",
+      "captures": {
+        "2": { "name": "entity.name.tag.toon" },
+        "3": { "name": "punctuation.separator.key-value.toon" },
+        "4": { "patterns": [{ "include": "#values" }] }
+      }
+    },
+    "values": {
+      "patterns": [
+        { "include": "#string-quoted" },
+        { "include": "#number" },
+        { "include": "#boolean" },
+        { "include": "#null" }
+      ]
+    },
+    "string-quoted": {
+      "name": "string.quoted.double.toon",
+      "begin": "\"",
+      "end": "\"",
+      "patterns": [
+        { "name": "constant.character.escape.toon", "match": "\\\\[\\\\\"nrt]" },
+        { "name": "invalid.illegal.escape.toon", "match": "\\\\." }
+      ]
+    },
+    "number": {
+      "name": "constant.numeric.toon",
+      "match": "(?<![A-Za-z0-9_.])-?(?:0|[1-9][0-9]*)(?:\\.[0-9]+)?(?:[eE][+-]?[0-9]+)?(?![A-Za-z0-9_.])"
+    },
+    "boolean": {
+      "patterns": [
+        { "name": "constant.language.boolean.true.toon", "match": "\\btrue\\b" },
+        { "name": "constant.language.boolean.false.toon", "match": "\\bfalse\\b" }
+      ]
+    },
+    "null": {
+      "name": "constant.language.null.toon",
+      "match": "\\bnull\\b"
+    }
+  }
+}