dart2js cps: Rewrite more List operations into JS array operations.

pkg/compiler/lib/src/tree_ir/tree_ir_nodes.dart

 // Copyright (c) 2014, 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.
 
 library tree_ir_nodes;
 
 import '../constants/values.dart' as values;
 import '../dart_types.dart' show DartType, InterfaceType, TypeVariableType;
 import '../elements/elements.dart';
 import '../io/source_information.dart' show SourceInformation;
@@ skipping 344 matching lines @@
   ApplyBuiltinOperator(this.operator, this.arguments);
 
   accept(ExpressionVisitor visitor) {
     return visitor.visitApplyBuiltinOperator(this);
   }
   accept1(ExpressionVisitor1 visitor, arg) {
     return visitor.visitApplyBuiltinOperator(this, arg);
   }
 }
 
+class ApplyBuiltinMethod extends Expression {
+  BuiltinMethod method;
+  Expression receiver;
+  List<Expression> arguments;
+
+  bool receiverIsNotNull;
+
+  ApplyBuiltinMethod(this.method, 
+                     this.receiver,
+                     this.arguments,
+                     {this.receiverIsNotNull: false});
+
+  accept(ExpressionVisitor visitor) {
+    return visitor.visitApplyBuiltinMethod(this);
+  }
+  accept1(ExpressionVisitor1 visitor, arg) {
+    return visitor.visitApplyBuiltinMethod(this, arg);
+  }
+}
+
 /// A conditional expression.
 class Conditional extends Expression {
   Expression condition;
   Expression thenExpression;
   Expression elseExpression;
 
   Conditional(this.condition, this.thenExpression, this.elseExpression);
 
   accept(ExpressionVisitor visitor) => visitor.visitConditional(this);
   accept1(ExpressionVisitor1 visitor, arg) {
@@ skipping 556 matching lines @@
   E visitGetStatic(GetStatic node);
   E visitSetStatic(SetStatic node);
   E visitCreateBox(CreateBox node);
   E visitCreateInstance(CreateInstance node);
   E visitReifyRuntimeType(ReifyRuntimeType node);
   E visitReadTypeVariable(ReadTypeVariable node);
   E visitTypeExpression(TypeExpression node);
   E visitCreateInvocationMirror(CreateInvocationMirror node);
   E visitInterceptor(Interceptor node);
   E visitApplyBuiltinOperator(ApplyBuiltinOperator node);
+  E visitApplyBuiltinMethod(ApplyBuiltinMethod node);
   E visitForeignExpression(ForeignExpression node);
   E visitGetLength(GetLength node);
   E visitGetIndex(GetIndex node);
   E visitSetIndex(SetIndex node);
   E visitAwait(Await node);
 }
 
 abstract class ExpressionVisitor1<E, A> {
   E visitExpression(Expression node, A arg) => node.accept1(this, arg);
   E visitVariableUse(VariableUse node, A arg);
@@ skipping 16 matching lines @@
   E visitGetStatic(GetStatic node, A arg);
   E visitSetStatic(SetStatic node, A arg);
   E visitCreateBox(CreateBox node, A arg);
   E visitCreateInstance(CreateInstance node, A arg);
   E visitReifyRuntimeType(ReifyRuntimeType node, A arg);
   E visitReadTypeVariable(ReadTypeVariable node, A arg);
   E visitTypeExpression(TypeExpression node, A arg);
   E visitCreateInvocationMirror(CreateInvocationMirror node, A arg);
   E visitInterceptor(Interceptor node, A arg);
   E visitApplyBuiltinOperator(ApplyBuiltinOperator node, A arg);
+  E visitApplyBuiltinMethod(ApplyBuiltinMethod node, A arg);
   E visitForeignExpression(ForeignExpression node, A arg);
   E visitGetLength(GetLength node, A arg);
   E visitGetIndex(GetIndex node, A arg);
   E visitSetIndex(SetIndex node, A arg);
   E visitAwait(Await node, A arg);
 }
 
 abstract class StatementVisitor<S> {
   S visitStatement(Statement node) => node.accept(this);
   S visitLabeledStatement(LabeledStatement node);
@@ skipping 193 matching lines @@
     node.arguments.forEach(visitExpression);
   }
 
   visitUnreachable(Unreachable node) {
   }
 
   visitApplyBuiltinOperator(ApplyBuiltinOperator node) {
     node.arguments.forEach(visitExpression);
   }
 
+  visitApplyBuiltinMethod(ApplyBuiltinMethod node) {
+    visitExpression(node.receiver);
+    node.arguments.forEach(visitExpression);
+  }
+
   visitInterceptor(Interceptor node) {
     visitExpression(node.input);
   }
 
   visitForeignCode(ForeignCode node) {
     node.arguments.forEach(visitExpression);
   }
 
   visitForeignExpression(ForeignExpression node) => visitForeignCode(node);
   visitForeignStatement(ForeignStatement node) => visitForeignCode(node);
@@ skipping 229 matching lines @@
 
   visitUnreachable(Unreachable node) {
     return node;
   }
 
   visitApplyBuiltinOperator(ApplyBuiltinOperator node) {
     _replaceExpressions(node.arguments);
     return node;
   }
 
+  visitApplyBuiltinMethod(ApplyBuiltinMethod node) {
+    node.receiver = visitExpression(node.receiver);
+    _replaceExpressions(node.arguments);
+    return node;
+  }
+
   visitInterceptor(Interceptor node) {
     node.input = visitExpression(node.input);
     return node;
   }
 
   visitGetLength(GetLength node) {
     node.object = visitExpression(node.object);
     return node;
   }
 
@@ skipping 44 matching lines @@
 
   /// Number of uses of the current fallthrough target.
   int get useCount => _stack.last.useCount;
 
   /// Indicate that a statement will fall through to the current fallthrough
   /// target.
   void use() {
     ++_stack.last.useCount;
   }
 }