add syntax switch

Author: Aerijo

lib/snippet-body-parser.js

@@ -1,12 +1,15 @@
+const syntax = atom.config.get("snippets.snippetSyntax");
+const parserName = syntax === "LSP" ? "snippet-body" : "snippet-body-old";
+
 let parser
 try {
-  parser = require('./snippet-body')
+  parser = require(`./${parserName}`)
 } catch (error) {
   const {allowUnsafeEval} = require('loophole')
   const fs = require('fs-plus')
   const PEG = require('pegjs')
 
-  const grammarSrc = fs.readFileSync(require.resolve('./snippet-body.pegjs'), 'utf8')
+  const grammarSrc = fs.readFileSync(require.resolve(`./${parserName}.pegjs`), 'utf8')
   parser = null
   allowUnsafeEval(() => parser = PEG.buildParser(grammarSrc))
 }

package.json

@@ -33,7 +33,7 @@
   "configSchema": {
     "snippetSyntax": {
       "type": "string",
-      "description": "Configures the syntax used for snippets. LSP is mostly a superset of original, with support for more features (but not all features may be implemented yet).",
+      "description": "(Requires restart) Configures the syntax used for snippets. LSP is mostly a superset of original, with support for more features (but not all features may be implemented yet).",
       "default": "LSP",
       "enum": [
         "LSP",