Move parser error to the grammar checker.

Conflicts:
	src/services/syntax/SyntaxGenerator.js.map

src/services/syntax/SyntaxGenerator.js

@@ -1289,7 +1289,7 @@ var definitions = [
         children: [
             { name: 'expression', type: 'ILeftHandSideExpressionSyntax' },
             { name: 'openBracketToken', isToken: true, excludeFromAST: true },
-            { name: 'argumentExpression', type: 'IExpressionSyntax' },
+            { name: 'argumentExpression', type: 'IExpressionSyntax', isOptional: true },
             { name: 'closeBracketToken', isToken: true, excludeFromAST: true }
         ]
     },

src/services/syntax/SyntaxGenerator.js.map

@@ -7,6 +7,7 @@
 <<<<<<< HEAD
 <<<<<<< HEAD
 <<<<<<< HEAD
+<<<<<<< HEAD
 <<<<<<< Updated upstream
 {"version":3,"file":"SyntaxGenerator.js","sourceRoot":"","sources":["file:///C:/VSPro_1/src/typescript/public_cyrusn/src/compiler/sys.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/errors.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/arrayUtilities.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/stringUtilities.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/syntaxKind.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/syntaxFacts.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/SyntaxGenerator.ts"],"names":["getWScriptSystem","getWScriptSystem.readFile","getWScriptSystem.writeFile","getNodeSystem","getNodeSystem.readFile","getNodeSystem.writeFile","getNodeSystem.fileChanged","TypeScript","TypeScript.Errors","TypeScript.Errors.constructor","TypeScript.Errors.argument","TypeScript.Errors.argumentOutOfRange","TypeScript.Errors.argumentNull","TypeScript.Errors.abstract","TypeScript.Errors.notYetImplemented","TypeScript.Errors.invalidOperation","TypeScript.ArrayUtilities","TypeScript.ArrayUtilities.constructor","TypeScript.ArrayUtilities.sequenceEquals","TypeScript.ArrayUtilities.contains","TypeScript.ArrayUtilities.distinct","TypeScript.ArrayUtilities.last","TypeScript.ArrayUtilities.lastOrDefault","TypeScript.ArrayUtilities.firstOrDefault","TypeScript.ArrayUtilities.first","TypeScript.ArrayUtilities.sum","TypeScript.ArrayUtilities.select","TypeScript.ArrayUtilities.where","TypeScript.ArrayUtilities.any","TypeScript.ArrayUtilities.all","TypeScript.ArrayUtilities.binarySearch","TypeScript.ArrayUtilities.createArray","TypeScript.ArrayUtilities.grow","TypeScript.ArrayUtilities.copy","TypeScript.ArrayUtilities.indexOf","TypeScript.StringUtilities","TypeScript.StringUtilities.constructor","TypeScript.StringUtilities.isString","TypeScript.StringUtilities.endsWith","TypeScript.StringUtilities.startsWith","TypeScript.StringUtilities.repeat","TypeScript.SyntaxKind","TypeScript.SyntaxFacts","TypeScript.SyntaxFacts.getTokenKind","TypeScript.SyntaxFacts.getText","TypeScript.SyntaxFacts.isAnyKeyword","TypeScript.SyntaxFacts.isAnyPunctuation","TypeScript.SyntaxFacts.isPrefixUnaryExpressionOperatorToken","TypeScript.SyntaxFacts.isBinaryExpressionOperatorToken","TypeScript.SyntaxFacts.isAssignmentOperatorToken","TypeScript.SyntaxFacts.isType","firstKind","getStringWithoutSuffix","getNameWithoutSuffix","getType","camelCase","getSafeName","generateConstructorFunction","generateSyntaxInterfaces","generateSyntaxInterface","generateNodes","isInterface","generateWalker","firstEnumName","groupBy","generateKeywordCondition","min","max","generateUtilities","generateScannerUtilities","syntaxKindName","generateVisitor"],"mappings":"AA4BA,IAAI,GAAG,GAAW,CAAC;IAEf,SAAS,gBAAgB;QAErBA,IAAIA,GAAGA,GAAGA,IAAIA,aAAaA,CAACA,4BAA4BA,CAACA,CAACA;QAE1DA,IAAIA,UAAUA,GAAGA,IAAIA,aAAaA,CAACA,cAAcA,CAACA,CAACA;QACnDA,UAAUA,CAACA,IAAIA,GAAGA,CAACA,CAAUA;QAE7BA,IAAIA,YAAYA,GAAGA,IAAIA,aAAaA,CAACA,cAAcA,CAACA,CAACA;QACrDA,YAAYA,CAACA,IAAIA,GAAGA,CAACA,CAAYA;QAEjCA,IAAIA,IAAIA,GAAaA,EAAEA,CAACA;QACxBA,GAAGA,CAACA,CAACA,GAAGA,CAACA,CAACA,GAAGA,CAACA,EAAEA,CAACA,GAAGA,OAAOA,CAACA,SAASA,CAACA,MAAMA,EAAEA,CAACA,EAAEA,EAAEA,CAACA;YAChDA,IAAIA,CAACA,CAACA,CAACA,GAAGA,OAAOA,CAACA,SAASA,CAACA,IAAIA,CAACA,CAACA,CAACA,CAACA;QACxCA,CAACA;QAEDA,SAASA,QAAQA,CAACA,QAAgBA,EAAEA,QAAiBA;YACjDC,EAAEA,CAACA,CAACA,CAACA,GAAGA,CAACA,UAAUA,CAACA,QAAQA,CAACA,CAACA,CAACA,CAACA;gBAC5BA,MAAMA,CAACA,SAASA,CAACA;YACrBA,CAACA;YACDA,UAAUA,CAACA,IAAIA,EAAEA,CAACA;YAClBA,IAAAA,CAACA;gBACGA,EAAEA,CAACA,CAACA,QAAQA,CAACA,CAACA,CAACA;oBACXA,UAAUA,CAACA,OAAOA,GAAGA,QAAQA,CAACA;oBAC9BA,UAAUA,CAACA,YAAYA,CAACA,QAAQA,CAACA,CAACA;gBACtCA,CAACA;gBACDA,IAAIA,CAACA,CAACA;oBAEFA,UAAUA,CAACA,OAAOA,GAAGA,QAAQA,CAACA;oBAC9BA,UAAUA,CAACA,YAAYA,CAACA,QAAQA,CAACA,CAACA;oBAClCA,IAAIA,GAAGA,GAAGA,UAAUA,CAACA,QAAQA,CAACA,CAACA,CAACA,IAAIA,EAAEA,CAACA;oBAEvCA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;oBAExBA,UAAUA,CAACA,OAAOA,GAAGA,GAAGA,CAACA,MAAMA,IAAIA,CAACA,IAAIA,CAACA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,CAACA,GAAGA,SAASA,GAAGA,OAAOA,CAACA;gBACzLA,CAACA;gBAEDA,MAAMA,CAACA,UAAUA,CAACA,QAAQA,EAAEA,CAACA;YACjCA,CACAA;YAAAA,KAAKA,CAACA,CAACA,CAACA,CAACA,CAATA,CAACA;gBACGA,MAAMA,CAACA,CAACA;YACZA,CAACA;oBACDA,CAACA;gBACGA,UAAUA,CAACA,KAAKA,EAAEA,CAACA;YACvBA,CAACA;QACLA,CAACA;QAEDD,SAASA,SAASA,CAACA,QAAgBA,EAAEA,IAAYA,EAAEA,kBAA4BA;YAC3EE,UAAUA,CAACA,IAAIA,EAAEA,CAACA;YAClBA,YAAYA,CAACA,IAAIA,EAAEA,CAACA;YACpBA,IAAAA,CAACA;gBAEGA,UAAUA,CAACA,OAAOA,GAAGA,OAAOA,CAACA;gBAC7BA,UAAUA,CAACA,SAASA,CAACA,IAAIA,CAACA,CAACA;gBAG3BA,EAAEA,CAACA,CAACA,kBAAkBA,CAACA,CAACA,CAACA;oBACrBA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;gBAC5BA,CAACA;gBACDA,IAAIA,CAACA,CAACA;oBACFA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;gBAC5BA,CAACA;Line truncated
 =======
@@ -39,3 +40,6 @@
 =======
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Line truncated
 >>>>>>> 8097afa... Move parser error to grammar check phase.
+=======
+{"version":3,"file":"SyntaxGenerator.js","sourceRoot":"","sources":["file:///C:/VSPro_1/src/typescript/public_cyrusn/src/compiler/sys.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/errors.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/arrayUtilities.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/core/stringUtilities.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/syntaxKind.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/syntaxFacts.ts","file:///C:/VSPro_1/src/typescript/public_cyrusn/src/services/syntax/SyntaxGenerator.ts"],"names":["getWScriptSystem","getWScriptSystem.readFile","getWScriptSystem.writeFile","getNodeSystem","getNodeSystem.readFile","getNodeSystem.writeFile","getNodeSystem.fileChanged","TypeScript","TypeScript.Errors","TypeScript.Errors.constructor","TypeScript.Errors.argument","TypeScript.Errors.argumentOutOfRange","TypeScript.Errors.argumentNull","TypeScript.Errors.abstract","TypeScript.Errors.notYetImplemented","TypeScript.Errors.invalidOperation","TypeScript.ArrayUtilities","TypeScript.ArrayUtilities.constructor","TypeScript.ArrayUtilities.sequenceEquals","TypeScript.ArrayUtilities.contains","TypeScript.ArrayUtilities.distinct","TypeScript.ArrayUtilities.last","TypeScript.ArrayUtilities.lastOrDefault","TypeScript.ArrayUtilities.firstOrDefault","TypeScript.ArrayUtilities.first","TypeScript.ArrayUtilities.sum","TypeScript.ArrayUtilities.select","TypeScript.ArrayUtilities.where","TypeScript.ArrayUtilities.any","TypeScript.ArrayUtilities.all","TypeScript.ArrayUtilities.binarySearch","TypeScript.ArrayUtilities.createArray","TypeScript.ArrayUtilities.grow","TypeScript.ArrayUtilities.copy","TypeScript.ArrayUtilities.indexOf","TypeScript.StringUtilities","TypeScript.StringUtilities.constructor","TypeScript.StringUtilities.isString","TypeScript.StringUtilities.endsWith","TypeScript.StringUtilities.startsWith","TypeScript.StringUtilities.repeat","TypeScript.SyntaxKind","TypeScript.SyntaxFacts","TypeScript.SyntaxFacts.getTokenKind","TypeScript.SyntaxFacts.getText","TypeScript.SyntaxFacts.isAnyKeyword","TypeScript.SyntaxFacts.isAnyPunctuation","TypeScript.SyntaxFacts.isPrefixUnaryExpressionOperatorToken","TypeScript.SyntaxFacts.isBinaryExpressionOperatorToken","TypeScript.SyntaxFacts.isAssignmentOperatorToken","TypeScript.SyntaxFacts.isType","firstKind","getStringWithoutSuffix","getNameWithoutSuffix","getType","camelCase","getSafeName","generateConstructorFunction","generateSyntaxInterfaces","generateSyntaxInterface","generateNodes","isInterface","generateWalker","firstEnumName","groupBy","generateKeywordCondition","min","max","generateUtilities","generateScannerUtilities","syntaxKindName","generateVisitor"],"mappings":"AA4BA,IAAI,GAAG,GAAW,CAAC;IAEf,SAAS,gBAAgB;QAErBA,IAAIA,GAAGA,GAAGA,IAAIA,aAAaA,CAACA,4BAA4BA,CAACA,CAACA;QAE1DA,IAAIA,UAAUA,GAAGA,IAAIA,aAAaA,CAACA,cAAcA,CAACA,CAACA;QACnDA,UAAUA,CAACA,IAAIA,GAAGA,CAACA,CAAUA;QAE7BA,IAAIA,YAAYA,GAAGA,IAAIA,aAAaA,CAACA,cAAcA,CAACA,CAACA;QACrDA,YAAYA,CAACA,IAAIA,GAAGA,CAACA,CAAYA;QAEjCA,IAAIA,IAAIA,GAAaA,EAAEA,CAACA;QACxBA,GAAGA,CAACA,CAACA,GAAGA,CAACA,CAACA,GAAGA,CAACA,EAAEA,CAACA,GAAGA,OAAOA,CAACA,SAASA,CAACA,MAAMA,EAAEA,CAACA,EAAEA,EAAEA,CAACA;YAChDA,IAAIA,CAACA,CAACA,CAACA,GAAGA,OAAOA,CAACA,SAASA,CAACA,IAAIA,CAACA,CAACA,CAACA,CAACA;QACxCA,CAACA;QAEDA,SAASA,QAAQA,CAACA,QAAgBA,EAAEA,QAAiBA;YACjDC,EAAEA,CAACA,CAACA,CAACA,GAAGA,CAACA,UAAUA,CAACA,QAAQA,CAACA,CAACA,CAACA,CAACA;gBAC5BA,MAAMA,CAACA,SAASA,CAACA;YACrBA,CAACA;YACDA,UAAUA,CAACA,IAAIA,EAAEA,CAACA;YAClBA,IAAAA,CAACA;gBACGA,EAAEA,CAACA,CAACA,QAAQA,CAACA,CAACA,CAACA;oBACXA,UAAUA,CAACA,OAAOA,GAAGA,QAAQA,CAACA;oBAC9BA,UAAUA,CAACA,YAAYA,CAACA,QAAQA,CAACA,CAACA;gBACtCA,CAACA;gBACDA,IAAIA,CAACA,CAACA;oBAEFA,UAAUA,CAACA,OAAOA,GAAGA,QAAQA,CAACA;oBAC9BA,UAAUA,CAACA,YAAYA,CAACA,QAAQA,CAACA,CAACA;oBAClCA,IAAIA,GAAGA,GAAGA,UAAUA,CAACA,QAAQA,CAACA,CAACA,CAACA,IAAIA,EAAEA,CAACA;oBAEvCA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;oBAExBA,UAAUA,CAACA,OAAOA,GAAGA,GAAGA,CAACA,MAAMA,IAAIA,CAACA,IAAIA,CAACA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,IAAIA,GAAGA,CAACA,UAAUA,CAACA,CAACA,CAACA,KAAKA,IAAIA,CAACA,GAAGA,SAASA,GAAGA,OAAOA,CAACA;gBACzLA,CAACA;gBAEDA,MAAMA,CAACA,UAAUA,CAACA,QAAQA,EAAEA,CAACA;YACjCA,CACAA;YAAAA,KAAKA,CAACA,CAACA,CAACA,CAACA,CAATA,CAACA;gBACGA,MAAMA,CAACA,CAACA;YACZA,CAACA;oBACDA,CAACA;gBACGA,UAAUA,CAACA,KAAKA,EAAEA,CAACA;YACvBA,CAACA;QACLA,CAACA;QAEDD,SAASA,SAASA,CAACA,QAAgBA,EAAEA,IAAYA,EAAEA,kBAA4BA;YAC3EE,UAAUA,CAACA,IAAIA,EAAEA,CAACA;YAClBA,YAAYA,CAACA,IAAIA,EAAEA,CAACA;YACpBA,IAAAA,CAACA;gBAEGA,UAAUA,CAACA,OAAOA,GAAGA,OAAOA,CAACA;gBAC7BA,UAAUA,CAACA,SAASA,CAACA,IAAIA,CAACA,CAACA;gBAG3BA,EAAEA,CAACA,CAACA,kBAAkBA,CAACA,CAACA,CAACA;oBACrBA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;gBAC5BA,CAACA;gBACDA,IAAIA,CAACA,CAACA;oBACFA,UAAUA,CAACA,QAAQA,GAAGA,CAACA,CAACA;gBAC5BA,CAACA;Line truncated
+>>>>>>> 67123d7... Move parser error to the grammar checker.

src/services/syntax/parser.ts

@@ -2650,7 +2650,7 @@ module TypeScript.Parser {
             return token0;
         }
 
-        function tryParseMemberExpressionOrHigher(_currentToken: ISyntaxToken, force: boolean, inObjectCreation: boolean): IMemberExpressionSyntax {
+        function tryParseMemberExpressionOrHigher(_currentToken: ISyntaxToken, force: boolean): IMemberExpressionSyntax {
             // Note: to make our lives simpler, we decompose the the NewExpression productions and
             // place ObjectCreationExpression and FunctionExpression into PrimaryExpression.
             // like so:
@@ -2703,7 +2703,7 @@ module TypeScript.Parser {
                 return undefined;
             }
 
-            return parseMemberExpressionRest(expression, inObjectCreation); 
+            return parseMemberExpressionRest(expression); 
         }
 
         function parseCallExpressionRest(expression: ILeftHandSideExpressionSyntax): ILeftHandSideExpressionSyntax {
@@ -2730,7 +2730,7 @@ module TypeScript.Parser {
                         continue;
 
                     case SyntaxKind.OpenBracketToken:
-                        expression = parseElementAccessExpression(expression, _currentToken, /*inObjectCreation:*/ false);
+                        expression = parseElementAccessExpression(expression, _currentToken);
                         continue;
 
                     case SyntaxKind.DotToken:
@@ -2747,14 +2747,14 @@ module TypeScript.Parser {
             }
         }
 
-        function parseMemberExpressionRest(expression: IMemberExpressionSyntax, inObjectCreation: boolean): IMemberExpressionSyntax {
+        function parseMemberExpressionRest(expression: IMemberExpressionSyntax): IMemberExpressionSyntax {
             while (true) {
                 var _currentToken = currentToken();
                 var currentTokenKind = _currentToken.kind;
 
                 switch (currentTokenKind) {
                     case SyntaxKind.OpenBracketToken:
-                        expression = parseElementAccessExpression(expression, _currentToken, inObjectCreation);
+                        expression = parseElementAccessExpression(expression, _currentToken);
                         continue;
 
                     case SyntaxKind.DotToken:
@@ -2808,7 +2808,7 @@ module TypeScript.Parser {
                 expression = parseSuperExpression(_currentToken);
             }
             else {
-                expression = tryParseMemberExpressionOrHigher(_currentToken, force, /*inObjectCreation:*/ false);
+                expression = tryParseMemberExpressionOrHigher(_currentToken, force);
                 if (expression === undefined) {
                     return undefined;
                 }
@@ -2941,29 +2941,18 @@ module TypeScript.Parser {
             return allowInAnd(force ? parseAssignmentExpressionOrHigher : tryParseAssignmentExpressionOrHigher);
         }
 
-        function parseElementAccessArgumentExpression(openBracketToken: ISyntaxToken, inObjectCreation: boolean) {
+        function parseElementAccessArgumentExpression(openBracketToken: ISyntaxToken) {
             // MemberExpression[?Yield] [ Expression[In, ?Yield] ]
 
-            // It's not uncommon for a user to write: "new Type[]".  Check for that common pattern
-            // and report a better error message.
-            if (inObjectCreation && currentToken().kind === SyntaxKind.CloseBracketToken) {
-                var errorStart = start(openBracketToken, source.text);
-                var errorEnd = fullEnd(currentToken());
-                var diagnostic = new Diagnostic(fileName, source.text.lineMap(), errorStart, errorEnd - errorStart,
-                    DiagnosticCode.new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead, undefined);
-                addDiagnostic(diagnostic);
-
-                return createEmptyToken(SyntaxKind.IdentifierName);
-            }
-            else {
-                return allowInAnd(parseExpression);
-            }
+            // For error recovery purposes.  Allow a missing expression here.  We'll report the
+            // appropriate message in the grammar checker.
+            return currentToken().kind === SyntaxKind.CloseBracketToken ? undefined : allowInAnd(parseExpression);
         }
 
-        function parseElementAccessExpression(expression: ILeftHandSideExpressionSyntax, openBracketToken: ISyntaxToken, inObjectCreation: boolean): ElementAccessExpressionSyntax {
+        function parseElementAccessExpression(expression: ILeftHandSideExpressionSyntax, openBracketToken: ISyntaxToken): ElementAccessExpressionSyntax {
             // Debug.assert(currentToken().kind === SyntaxKind.OpenBracketToken);
             return new ElementAccessExpressionSyntax(parseNodeData, expression, consumeToken(openBracketToken),
-                parseElementAccessArgumentExpression(openBracketToken, inObjectCreation), eatToken(SyntaxKind.CloseBracketToken));
+                parseElementAccessArgumentExpression(openBracketToken), eatToken(SyntaxKind.CloseBracketToken));
         }
 
         function tryParsePrimaryExpression(_currentToken: ISyntaxToken, force: boolean): IPrimaryExpressionSyntax {
@@ -3069,7 +3058,7 @@ module TypeScript.Parser {
             // this decision.
 
             return new ObjectCreationExpressionSyntax(parseNodeData,
-                consumeToken(newKeyword), tryParseMemberExpressionOrHigher(currentToken(), /*force:*/ true, /*inObjectCreation:*/ true), tryParseArgumentList());
+                consumeToken(newKeyword), tryParseMemberExpressionOrHigher(currentToken(), /*force:*/ true), tryParseArgumentList());
         }
 
         function parseTemplateExpression(startToken: ISyntaxToken): IPrimaryExpressionSyntax {

src/services/syntax/syntaxGenerator.ts

@@ -435,7 +435,7 @@ var definitions:ITypeDefinition[] = [
         children: [
             <any>{ name: 'expression', type: 'ILeftHandSideExpressionSyntax' },
             <any>{ name: 'openBracketToken', isToken: true, excludeFromAST: true },
-            <any>{ name: 'argumentExpression', type: 'IExpressionSyntax' },
+            <any>{ name: 'argumentExpression', type: 'IExpressionSyntax', isOptional: true },
             <any>{ name: 'closeBracketToken', isToken: true, excludeFromAST: true }
         ]
     },

src/services/syntax/syntaxNodes.concrete.generated.ts

@@ -1347,7 +1347,7 @@ module TypeScript {
         this.closeBracketToken = closeBracketToken,
         expression.parent = this,
         openBracketToken.parent = this,
-        argumentExpression.parent = this,
+        argumentExpression && (argumentExpression.parent = this),
         closeBracketToken.parent = this;
     };
     ElementAccessExpressionSyntax.prototype.kind = SyntaxKind.ElementAccessExpression;

src/services/syntax/syntaxTree.ts

@@ -138,8 +138,12 @@ module TypeScript {
         }
 
         private pushDiagnostic(element: ISyntaxElement, diagnosticKey: string, args?: any[]): void {
+            this.pushDiagnosticAt(start(element, this.text), width(element), diagnosticKey, args);
+        }
+
+        private pushDiagnosticAt(start: number, length: number, diagnosticKey: string, args?: any[]): void {
             this.diagnostics.push(new Diagnostic(
-                this.syntaxTree.fileName(), this.syntaxTree.lineMap(), start(element, this.text), width(element), diagnosticKey, args));
+                this.syntaxTree.fileName(), this.syntaxTree.lineMap(), start, length, diagnosticKey, args));
         }
 
         public visitCatchClause(node: CatchClauseSyntax): void {
@@ -715,6 +719,33 @@ module TypeScript {
             super.visitSetAccessor(node);
         }
 
+        public visitElementAccessExpression(node: ElementAccessExpressionSyntax): void {
+            if (this.checkForMissingArgumentExpression(node)) {
+                return;
+            }
+
+            super.visitElementAccessExpression(node);
+        }
+
+        public checkForMissingArgumentExpression(node: ElementAccessExpressionSyntax): boolean {
+            if (node.argumentExpression === undefined) {
+                if (node.parent.kind === SyntaxKind.ObjectCreationExpression && (<ObjectCreationExpressionSyntax>node.parent).expression === node) {
+                    // Provide a specialized message for the very common case where someone writes:
+                    //      new Foo[]
+                    var start = TypeScript.start(node.openBracketToken);
+                    var end = TypeScript.fullEnd(node.closeBracketToken);
+                    this.pushDiagnosticAt(start, end - start, DiagnosticCode.new_T_cannot_be_used_to_create_an_array_Use_new_Array_T_instead);                    
+                }
+                else {
+                    this.pushDiagnostic(node.closeBracketToken, DiagnosticCode.Expression_expected);
+                }
+
+                return true;
+            }
+
+            return false;
+        }
+
         public visitEnumDeclaration(node: EnumDeclarationSyntax): void {
             if (this.checkForDisallowedDeclareModifier(node.modifiers) ||
                 this.checkForRequiredDeclareModifier(node, node.identifier, node.modifiers) ||
@@ -1274,8 +1305,7 @@ module TypeScript {
 
         public checkForMissingThrowStatementExpression(node: ThrowStatementSyntax): boolean {
             if (node.expression === undefined) {
-                this.diagnostics.push(new Diagnostic(
-                    this.syntaxTree.fileName(), this.syntaxTree.lineMap(), fullEnd(node.throwKeyword), 0, DiagnosticCode.Expression_expected));
+                this.pushDiagnosticAt(fullEnd(node.throwKeyword), 0, DiagnosticCode.Expression_expected);
                 return true;
             }