Initial commit

.gitignore

@@ -0,0 +1,9 @@
+node_modules
+build
+
+# files generated by node-tree-sitter-compiler
+index.js
+binding.gyp
+grammar.json
+src
+include

grammar.coffee

@@ -0,0 +1,35 @@
+compiler = require("tree-sitter-compiler")
+{ choice, repeat, seq, keyword, token, optional } = compiler.rules
+
+module.exports = compiler.grammar
+  name: 'javascript',
+
+  rules:
+    program: -> repeat(@statement)
+
+    statement: -> choice(
+      @expression_statement,
+      @if_statement)
+
+    expression_statement: -> seq(
+      @expression, ";")
+
+    if_statement: -> seq(
+      keyword("if"),
+      "(", @expression, ")",
+      @statement)
+
+    expression: -> choice(
+      @variable,
+      @number,
+      @string)
+
+    variable: -> /\a+\d*/,
+
+    number: -> token(seq(
+      /\d+/,
+      optional(seq(".", /\d+/))))
+
+    string: -> token(choice(
+      seq('"', repeat(choice(/[^"]/, '\\"')), '"'),
+      seq("'", repeat(choice(/[^']/, "\\'")), "'")))

grammar_test/expressions.txt

@@ -0,0 +1,38 @@
+============================================
+Strings
+============================================
+
+"A string with \"double\" and 'single' quotes";
+'A string with "double" and \'single\' quotes';
+
+----
+
+(program
+  (expression_statement (string))
+  (expression_statement (string)))
+
+============================================
+Numbers
+============================================
+
+101;
+3.14;
+
+---
+
+(program
+  (expression_statement (number))
+  (expression_statement (number)))
+
+============================================
+Variables
+============================================
+
+theVar;
+theVar2;
+
+---
+
+(program
+  (expression_statement (variable))
+  (expression_statement (variable)))

package.json

@@ -0,0 +1,22 @@
+{
+  "name": "tree-sitter-javascript",
+  "version": "0.0.0",
+  "description": "Javascript grammar for node-tree-sitter",
+  "main": "index.js",
+  "keywords": [
+    "parser",
+    "lexer"
+  ],
+  "author": "Max Brunsfeld",
+  "license": "MIT",
+  "dependencies": {
+    "bindings": "1.2.x"
+  },
+  "devDependencies": {
+    "tree-sitter-compiler": "*"
+  },
+  "scripts": {
+    "prepublish": "tree-sitter compile",
+    "test": "tree-sitter test"
+  }
+}