Move all crates to a top-level crates folder

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

crates/gpui/grammars/context-predicate/grammar.js

@@ -0,0 +1,31 @@
+module.exports = grammar({
+  name: 'context_predicate',
+
+  rules: {
+    source: $ => $._expression,
+
+    _expression: $ => choice(
+      $.identifier,
+      $.not,
+      $.and,
+      $.or,
+      $.equal,
+      $.not_equal,
+      $.parenthesized,
+    ),
+
+    identifier: $ => /[A-Za-z0-9_-]+/,
+
+    not: $ => prec(3, seq("!", field("expression", $._expression))),
+
+    and: $ => prec.left(2, seq(field("left", $._expression), "&&", field("right", $._expression))),
+
+    or: $ => prec.left(1, seq(field("left", $._expression), "||", field("right", $._expression))),
+
+    equal: $ => seq(field("left", $.identifier), "==", field("right", $.identifier)),
+
+    not_equal: $ => seq(field("left", $.identifier), "!=", field("right", $.identifier)),
+
+    parenthesized: $ => seq("(", field("expression", $._expression), ")"),
+  }
+});