dart2js: Distinguish precedence levels for left-hand side and call.

pkg/js_ast/lib/src/printer.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of js_ast;
 
 
 typedef String Renamer(Name);
 
 class JavaScriptPrintingOptions {
@@ skipping 660 matching lines @@
 
   @override
   visitVariableDeclarationList(VariableDeclarationList list) {
     out("var ");
     visitCommaSeparated(list.declarations, ASSIGNMENT,
                         newInForInit: inForInit, newAtStatementBegin: false);
   }
 
   @override
   visitAssignment(Assignment assignment) {
-    visitNestedExpression(assignment.leftHandSide, LEFT_HAND_SIDE,
+    visitNestedExpression(assignment.leftHandSide, CALL,
                           newInForInit: inForInit,
                           newAtStatementBegin: atStatementBegin);
     if (assignment.value != null) {
       spaceOut();
       String op = assignment.op;
       if (op != null) out(op);
       out("=");
       spaceOut();
       visitNestedExpression(assignment.value, ASSIGNMENT,
                             newInForInit: inForInit,
@@ skipping 20 matching lines @@
     spaceOut();
     out(":");
     spaceOut();
     visitNestedExpression(cond.otherwise, ASSIGNMENT,
                           newInForInit: inForInit, newAtStatementBegin: false);
   }
 
   @override
   visitNew(New node) {
     out("new ");
-    visitNestedExpression(node.target, CALL,
+    visitNestedExpression(node.target, LEFT_HAND_SIDE,
                           newInForInit: inForInit, newAtStatementBegin: false);
     out("(");
     visitCommaSeparated(node.arguments, ASSIGNMENT,
                         newInForInit: false, newAtStatementBegin: false);
     out(")");
   }
 
   @override
   visitCall(Call call) {
-    visitNestedExpression(call.target, LEFT_HAND_SIDE,
+    visitNestedExpression(call.target, CALL,
                           newInForInit: inForInit,
                           newAtStatementBegin: atStatementBegin);
     out("(");
     visitCommaSeparated(call.arguments, ASSIGNMENT,
                         newInForInit: false, newAtStatementBegin: false);
     out(")");
   }
 
   @override
   void visitBinary(Binary binary) {
@@ skipping 122 matching lines @@
         break;
       default:
         out(op);
     }
     visitNestedExpression(unary.argument, UNARY,
                           newInForInit: inForInit, newAtStatementBegin: false);
   }
 
   @override
   void visitPostfix(Postfix postfix) {
-    visitNestedExpression(postfix.argument, LEFT_HAND_SIDE,
+    visitNestedExpression(postfix.argument, CALL,
                           newInForInit: inForInit,
                           newAtStatementBegin: atStatementBegin);
     out(postfix.op);
   }
 
   @override
   void visitVariableUse(VariableUse ref) {
     out(localNamer.getName(ref.name));
   }
 
@@ skipping 611 matching lines @@
     }
   }
 
   EnterExitNode exitNode(JavaScriptPrintingContext context, int position) {
     // Enter must happen before exit.
     addToNode(context, position);
     context.exitNode(node, startPosition, position, closingPosition);
     return parent;
   }
 }