Test left-hand-side expression parsing

src/ol/expression/parser.js

@@ -236,12 +236,14 @@ ol.expression.Parser.prototype.parseArguments_ = function(lexer) {
 
   lexer.expect('(');
 
-  while (!lexer.match(')')) {
-    args.push(this.parseBinaryExpression_(lexer));
-    if (lexer.match(')')) {
-      break;
+  if (!lexer.match(')')) {
+    while (true) {
+      args.push(this.parseBinaryExpression_(lexer));
+      if (lexer.match(')')) {
+        break;
+      }
+      lexer.expect(',');
     }
-    lexer.expect(',');
   }
   lexer.skip();
 
@@ -355,6 +357,7 @@ ol.expression.Parser.prototype.parseLeftHandSideExpression_ = function(lexer) {
     while (token.value === '.') {
       var property = this.parseNonComputedMember_(lexer);
       expr = this.createMemberExpression_(expr, property);
+      token = lexer.peek();
     }
   }
   return expr;

test/spec/ol/expression/expression.test.js

@@ -61,6 +61,44 @@ describe('ol.expression.parse', function() {
 
   });
 
+  describe('left-hand-side expressions', function() {
+    // http://www.ecma-international.org/ecma-262/5.1/#sec-11.2
+
+    it('parses member expressions with dot notation', function() {
+      var expr = ol.expression.parse('foo.bar.baz');
+      expect(expr).to.be.a(ol.expression.Member);
+      var scope = {foo: {bar: {baz: 42}}};
+      expect(expr.evaluate(scope)).to.be(42);
+    });
+
+    it('throws on invalid member expression', function() {
+      expect(function() {
+        ol.expression.parse('foo.4bar');
+      }).throwException();
+    });
+
+    it('parses call expressions with literal arguments', function() {
+      var expr = ol.expression.parse('foo(42, "bar")');
+      expect(expr).to.be.a(ol.expression.Call);
+      var scope = {
+        foo: function(num, str) {
+          expect(num).to.be(42);
+          expect(str).to.be('bar');
+          return str + num;
+        }
+      };
+      expect(expr.evaluate(scope)).to.be('bar42');
+    });
+
+    it('throws on calls with unterminated arguments', function() {
+      expect(function() {
+        ol.expression.parse('foo(42,)');
+      }).throwException();
+    });
+
+  });
+
+
 });