Support generic method syntax (fixes #25869).

runtime/vm/raw_object.h

 // 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.
 
 #ifndef VM_RAW_OBJECT_H_
 #define VM_RAW_OBJECT_H_
 
 #include "platform/assert.h"
 #include "vm/atomic.h"
 #include "vm/globals.h"
@@ skipping 823 matching lines @@
 
   uword entry_point_;  // Accessed from generated code.
 
   RawObject** from() { return reinterpret_cast<RawObject**>(&ptr()->name_); }
   RawString* name_;
   RawObject* owner_;  // Class or patch class or mixin class
                       // where this function is defined.
   RawAbstractType* result_type_;
   RawArray* parameter_types_;
   RawArray* parameter_names_;
+  RawTypeArguments* type_parameters_;  // Array of TypeParameter.
   RawObject* data_;  // Additional data specific to the function kind.
   RawObject** to_snapshot() {
     return reinterpret_cast<RawObject**>(&ptr()->data_);
   }
   RawArray* ic_data_array_;  // ICData of unoptimized code.
   RawObject** to_no_code() {
     return reinterpret_cast<RawObject**>(&ptr()->ic_data_array_);
   }
   RawCode* code_;  // Currently active code. Accessed from generated code.
   NOT_IN_PRECOMPILED(RawCode* unoptimized_code_);  // Unoptimized code, keep it
@@ skipping 886 matching lines @@
 class RawTypeParameter : public RawAbstractType {
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(TypeParameter);
 
   RawObject** from() {
     return reinterpret_cast<RawObject**>(&ptr()->name_);
   }
   RawString* name_;
   RawSmi* hash_;
   RawAbstractType* bound_;  // ObjectType if no explicit bound specified.
-  RawObject** to() { return reinterpret_cast<RawObject**>(&ptr()->bound_); }
+  RawFunction* parameterized_function_;
+  RawObject** to() {
+    return reinterpret_cast<RawObject**>(&ptr()->parameterized_function_);
+  }
   classid_t parameterized_class_id_;
   TokenPosition token_pos_;
   int16_t index_;
+  uint8_t parent_level_;  // Max 255 levels of nested generic functions is OK.
   int8_t type_state_;
 
   friend class CidRewriteVisitor;
 };
 
 
 class RawBoundedType : public RawAbstractType {
  private:
   RAW_HEAP_OBJECT_IMPLEMENTATION(BoundedType);
 
@@ skipping 702 matching lines @@
   COMPILE_ASSERT(kExternalTypedDataInt8ArrayCid ==
                  kTypedDataInt8ArrayViewCid + 15);
   COMPILE_ASSERT(kByteBufferCid == kExternalTypedDataInt8ArrayCid + 14);
   COMPILE_ASSERT(kNullCid == kByteBufferCid + 1);
   return (kNullCid - kTypedDataInt8ArrayCid);
 }
 
 }  // namespace dart
 
 #endif  // VM_RAW_OBJECT_H_