Support tearoffs in the new emitter.

pkg/compiler/lib/src/js_emitter/old_emitter/reflection_data_parser.dart

 // Copyright (c) 2013, 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 dart2js.js_emitter;
 
 // TODO(ahe): Share these with js_helper.dart.
 const FUNCTION_INDEX = 0;
 const NAME_INDEX = 1;
 const CALL_NAME_INDEX = 2;
@@ skipping 436 matching lines @@
       'processStatics': processStatics,
       'incrementalSupport': incrementalSupport,
       'addStubs': addStubs,
       'tearOffCode': tearOffCode,
       'init': init,
       'finishClasses': finishClasses,
       'needsClassSupport': oldEmitter.needsClassSupport,
       'needsStructuredMemberInfo': oldEmitter.needsStructuredMemberInfo});
 }
 
-
-List<jsAst.Statement> buildTearOffCode(JavaScriptBackend backend) {
-  Namer namer = backend.namer;
-  Compiler compiler = backend.compiler;
-
-  Element closureFromTearOff = backend.findHelper('closureFromTearOff');
-  String tearOffAccessText;
-  jsAst.Expression tearOffAccessExpression;
-  String tearOffGlobalObjectName;
-  String tearOffGlobalObject;
-  if (closureFromTearOff != null) {
-    // We need both the AST that references [closureFromTearOff] and a string
-    // for the NoCsp version that constructs a function.
-    tearOffAccessExpression =
-        backend.emitter.staticFunctionAccess(closureFromTearOff);
-    tearOffAccessText =
-        jsAst.prettyPrint(tearOffAccessExpression, compiler).getText();
-    tearOffGlobalObjectName = tearOffGlobalObject =
-        namer.globalObjectFor(closureFromTearOff);
-  } else {
-    // Default values for mocked-up test libraries.
-    tearOffAccessText =
-        r'''function() { throw 'Helper \'closureFromTearOff\' missing.' }''';
-    tearOffAccessExpression = js(tearOffAccessText);
-    tearOffGlobalObjectName = 'MissingHelperFunction';
-    tearOffGlobalObject = '($tearOffAccessText())';
-  }
-
-  jsAst.Statement tearOffGetter;
-  if (!compiler.useContentSecurityPolicy) {
-    // This template is uncached because it is constructed from code fragments
-    // that can change from compilation to compilation.  Some of these could be
-    // avoided, except for the string literals that contain the compiled access
-    // path to 'closureFromTearOff'.
-    tearOffGetter = js.uncachedStatementTemplate('''
-        function tearOffGetter(funcs, reflectionInfo, name, isIntercepted) {
-          return isIntercepted
-              ? new Function("funcs", "reflectionInfo", "name",
-                             "$tearOffGlobalObjectName", "c",
-                  "return function tearOff_" + name + (functionCounter++)+ "(x) {" +
-                    "if (c === null) c = $tearOffAccessText(" +
-                        "this, funcs, reflectionInfo, false, [x], name);" +
-                    "return new c(this, funcs[0], x, name);" +
-                  "}")(funcs, reflectionInfo, name, $tearOffGlobalObject, null)
-              : new Function("funcs", "reflectionInfo", "name",
-                             "$tearOffGlobalObjectName", "c",
-                  "return function tearOff_" + name + (functionCounter++)+ "() {" +
-                    "if (c === null) c = $tearOffAccessText(" +
-                        "this, funcs, reflectionInfo, false, [], name);" +
-                    "return new c(this, funcs[0], null, name);" +
-                  "}")(funcs, reflectionInfo, name, $tearOffGlobalObject, null);
-        }''').instantiate([]);
-  } else {
-    tearOffGetter = js.statement('''
-        function tearOffGetter(funcs, reflectionInfo, name, isIntercepted) {
-          var cache = null;
-          return isIntercepted
-              ? function(x) {
-                  if (cache === null) cache = #(
-                      this, funcs, reflectionInfo, false, [x], name);
-                  return new cache(this, funcs[0], x, name);
-                }
-              : function() {
-                  if (cache === null) cache = #(
-                      this, funcs, reflectionInfo, false, [], name);
-                  return new cache(this, funcs[0], null, name);
-                };
-        }''', [tearOffAccessExpression, tearOffAccessExpression]);
-  }
-
-  jsAst.Statement tearOff = js.statement('''
-    function tearOff(funcs, reflectionInfo, isStatic, name, isIntercepted) {
-      var cache;
-      return isStatic
-          ? function() {
-              if (cache === void 0) cache = #tearOff(
-                  this, funcs, reflectionInfo, true, [], name).prototype;
-              return cache;
-            }
-          : tearOffGetter(funcs, reflectionInfo, name, isIntercepted);
-    }''',  {'tearOff': tearOffAccessExpression});
-
-  return <jsAst.Statement>[tearOffGetter, tearOff];
-}
-
 String readString(String array, String index) {
   return readChecked(
       array, index, 'result != null && typeof result != "string"', 'string');
 }
 
 String readInt(String array, String index) {
   return readChecked(
       array, index,
       'result != null && (typeof result != "number" || (result|0) !== result)',
       'int');
@@ skipping 14 matching lines @@
 (function() {
   var result = $array[$index];
   if ($check) {
     throw new Error(
         name + ": expected value of type \'$type\' at index " + ($index) +
         " but got " + (typeof result));
   }
   return result;
 })()''';
 }