Merge pull request #12 from TechnologyAdvice/ast-balance

Parser: Fixed binOp balancing after nested idents

.travis.yml

@@ -1,7 +1,8 @@
 language: node_js
 node_js:
   - "0.12"
-  - "iojs"
+  - "4"
+  - "5"
 addons:
   code_climate:
     repo_token:
@@ -10,3 +11,4 @@ script: node_modules/.bin/gulp coverage-test
 after_script:
   - npm install -g codeclimate-test-reporter
   - cat coverage/lcov.info | codeclimate
+

CHANGELOG.md

@@ -2,7 +2,13 @@
 This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Development
-Nothing yet!
+### Fixed
+- Binary operators after nested identifiers were not balanced properly,
+resulting in a broken expression/AST
+- Gulp (or one of its plugins) had a breaking change in a minor release,
+preventing the frontend build from running. This build method will be
+removed from the next major version of Jexl. For now, Jexl is now version-
+locked to the original gulp+plugins that worked.
 
 ## [v1.1.2]
 ### Changed

lib/parser/handlers.js

@@ -96,6 +96,7 @@ exports.identifier = function(token) {
 	if (this._nextIdentEncapsulate) {
 		node.from = this._cursor;
 		this._placeBeforeCursor(node);
+		this._nextIdentEncapsulate = false;
 	}
 	else {
 		if (this._nextIdentRelative)

package.json

@@ -32,17 +32,17 @@
   },
   "homepage": "https://github.com/TechnologyAdvice/jexl",
   "devDependencies": {
-    "browserify": "^9.0.3",
+    "browserify": "=9.0.3",
     "chai": "^2.0.0",
     "chai-as-promised": "^4.2.0",
-    "gulp": "^3.8.11",
+    "gulp": "=3.8.11",
     "gulp-istanbul": "^0.6.0",
     "gulp-istanbul-enforcer": "^1.0.3",
     "gulp-mocha": "^2.0.0",
-    "gulp-rename": "^1.2.0",
-    "gulp-uglify": "^1.1.0",
+    "gulp-rename": "=1.2.0",
+    "gulp-uglify": "=1.1.0",
     "istanbul": "^0.3.8",
     "mocha": "^2.1.0",
-    "vinyl-transform": "^1.0.0"
+    "vinyl-transform": "=1.0.0"
   }
 }

test/parser/Parser.js

@@ -406,4 +406,22 @@ describe('Parser', function() {
 			alternate: {type: 'Literal', value: 'baz'}
 		});
 	});
+	it('should correctly balance a binary op between complex identifiers', function() {
+		inst.addTokens(lexer.tokenize('a.b == c.d'));
+		inst.complete().should.deep.equal({
+			type:  'BinaryExpression',
+			operator: '==',
+			left: {
+				type: 'Identifier',
+				value: 'b',
+				from: {type: 'Identifier', value: 'a'}
+			},
+			right: {
+				type: 'Identifier',
+				value: 'd',
+				from: {type: 'Identifier', value: 'c'}
+			}
+		});
+	});
 });
+