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/**
* Highlight Command - Generate Tree-sitter highlights and editor scaffolds
*/
import { Command } from 'commander';
import chalk from 'chalk';
import { existsSync, mkdirSync, writeFileSync, readFileSync } from 'fs';
import { join } from 'path';
/**
* Create the highlight command
*/
export function createHighlightCommand(): Command {
const highlightCommand = new Command('highlight');
highlightCommand
.description('Generate Tree-sitter highlights and editor scaffolds (tree-sitter, neovim, emacs, vscode)')
.action(async () => {
if (!existsSync('grammar.js')) {
console.error(chalk.red('❌ No grammar.js found. Are you in a DSL project directory?'));
process.exit(1);
}
const languageName = getProjectName();
// Tree-sitter highlights
const tsOutDir = 'generated/editors/tree-sitter';
mkdirSync(tsOutDir, { recursive: true });
const highlights = `
; Minimal highlights scaffold. Extend as needed.
; Comments
(comment) @comment
; Strings
(string) @string
; Numbers
(number) @number
; Keywords (example)
[("if") ("else") ("let") ("function")] @keyword
`;
const tsFile = join(tsOutDir, 'highlights.scm');
writeFileSync(tsFile, highlights.trim() + '\n', 'utf-8');
console.log(chalk.green(`✅ Generated ${tsFile}`));
// Neovim instructions
const nvimDir = 'generated/editors/neovim';
mkdirSync(nvimDir, { recursive: true });
const nvimMd = `# Neovim setup for ${languageName}
1. Copy queries to your runtimepath: queries/${languageName}/highlights.scm
2. Configure nvim-treesitter:
\`\`\`lua
require('nvim-treesitter.configs').setup({
ensure_installed = {},
highlight = { enable = true },
})
\`\`\`
`;
writeFileSync(join(nvimDir, 'setup-instructions.md'), nvimMd, 'utf-8');
console.log(chalk.green(`✅ Generated ${join(nvimDir, 'setup-instructions.md')}`));
// Emacs major mode (minimal)
const emacsDir = 'generated/editors/emacs';
mkdirSync(emacsDir, { recursive: true });
const emacsEl = `;;; ${languageName}-mode.el --- ${languageName} mode -*- lexical-binding: t; -*-
(require 'treesit)
(define-derived-mode ${languageName}-mode prog-mode "${languageName}"
"Major mode for ${languageName} using Tree-sitter."
(when (treesit-ready-p '${languageName})
(treesit-parser-create '${languageName})))
(add-to-list 'auto-mode-alist '("\\.${languageName}$" . ${languageName}-mode))
(provide '${languageName}-mode)
`;
writeFileSync(join(emacsDir, `${languageName}-mode.el`), emacsEl, 'utf-8');
console.log(chalk.green(`✅ Generated ${join(emacsDir, `${languageName}-mode.el`)}`));
// VS Code: TextMate grammar + language configuration (basic placeholders)
const vscodeSyntaxDir = 'generated/editors/vscode/syntaxes';
const vscodeDir = 'generated/editors/vscode';
mkdirSync(vscodeSyntaxDir, { recursive: true });
mkdirSync(vscodeDir, { recursive: true });
const scope = `source.${languageName}`;
const tmLanguage = {
name: languageName,
scopeName: scope,
patterns: [
{ include: '#comment' },
{ include: '#string' },
{ include: '#number' },
{ include: '#keyword' }
],
repository: {
comment: { patterns: [{ name: 'comment.line.double-slash', match: '//.*$' }] },
string: { patterns: [{ name: 'string.quoted.double', begin: '"', end: '"' }] },
number: { patterns: [{ name: 'constant.numeric', match: '-?\\b[0-9]+(\\.[0-9]+)?\\b' }] },
keyword: { patterns: [{ name: 'keyword.control', match: '\\b(if|else|let|function)\\b' }] }
}
} as const;
writeFileSync(join(vscodeSyntaxDir, `${languageName}.tmLanguage.json`), JSON.stringify(tmLanguage, null, 2));
const langConfig = {
comments: { lineComment: '//' },
brackets: [["{","}"],["[","]"],["(",")"]],
autoClosingPairs: [
{ open: '"', close: '"' },
{ open: '{', close: '}' },
{ open: '(', close: ')' },
{ open: '[', close: ']' }
],
surroundingPairs: [
{ open: '"', close: '"' },
{ open: '{', close: '}' },
{ open: '(', close: ')' },
{ open: '[', close: ']' }
]
};
writeFileSync(join(vscodeDir, 'language-configuration.json'), JSON.stringify(langConfig, null, 2));
console.log(chalk.green(`✅ Generated VS Code syntax and configuration`));
});
return highlightCommand;
}
function getProjectName(): string {
try {
const grammarContent = readFileSync('grammar.js', 'utf-8');
const nameMatch = grammarContent.match(/name:\s*['"]([^'"]+)['"]/);
if (nameMatch) return nameMatch[1];
} catch {}
const parts = process.cwd().split(/[\\/]/);
return parts[parts.length - 1] || 'dsl';
}
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