Fraction class prototype and test (not to be committed).

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/dart_entry.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
@@ skipping 407 matching lines @@
 void ArgumentsDescriptor::InitOnce() {
   for (int i = 0; i < kCachedDescriptorCount; i++) {
     cached_args_descriptors_[i] = ArgumentsDescriptor::NewNonCached(i, false);
   }
 }
 
 
 RawObject* DartLibraryCalls::InstanceCreate(const Library& lib,
                                             const String& class_name,
                                             const String& constructor_name,
+                                            bool factory,
                                             const Array& arguments) {
   const Class& cls = Class::Handle(lib.LookupClassAllowPrivate(class_name));
+  // Class may not be finalized yet, but will be as the constructor is compiled.
   ASSERT(!cls.IsNull());
   // For now, we only support a non-parameterized or raw type.
-  const int kNumExtraArgs = 1;  // implicit rcvr arg.
-  const Instance& exception_object = Instance::Handle(Instance::New(cls));
+  const int kNumExtraArgs = 1;  // Implicit rcvr arg or empty factory type args.
+  Instance& exception_object = Instance::Handle();
   const Array& constructor_arguments =
     Array::Handle(Array::New(arguments.Length() + kNumExtraArgs));
-  constructor_arguments.SetAt(0, exception_object);
+  if (factory) {
+    constructor_arguments.SetAt(0, TypeArguments::Handle());
+  } else {
+    exception_object = Instance::New(cls);
+    constructor_arguments.SetAt(0, exception_object);
+  }
   Object& obj = Object::Handle();
   for (intptr_t i = 0; i < arguments.Length(); i++) {
     obj = arguments.At(i);
     constructor_arguments.SetAt((i + kNumExtraArgs), obj);
   }
 
   const String& function_name = String::Handle(
       String::Concat(class_name, constructor_name));
   const Function& constructor =
-      Function::Handle(cls.LookupConstructorAllowPrivate(function_name));
+      Function::Handle(factory ?
+                       cls.LookupFactoryAllowPrivate(function_name) :
+                       cls.LookupConstructorAllowPrivate(function_name));
   ASSERT(!constructor.IsNull());
   const Object& retval =
     Object::Handle(DartEntry::InvokeFunction(constructor,
                                              constructor_arguments));
-  ASSERT(retval.IsNull() || retval.IsError());
-  if (retval.IsError()) {
+  if (factory || retval.IsError()) {
     return retval.raw();
   }
   return exception_object.raw();
 }
 
 
 RawObject* DartLibraryCalls::ToString(const Instance& receiver) {
   const int kNumArguments = 1;  // Receiver.
   ArgumentsDescriptor args_desc(
       Array::Handle(ArgumentsDescriptor::New(kNumArguments)));
@@ skipping 145 matching lines @@
   const Array& args = Array::Handle(Array::New(kNumArguments));
   args.SetAt(0, map);
   args.SetAt(1, key);
   args.SetAt(2, value);
   const Object& result = Object::Handle(DartEntry::InvokeFunction(function,
                                                                   args));
   return result.raw();
 }
 
 }  // namespace dart