Pass type argument vector to generic functions (if --reify-generic-functions is

runtime/vm/dart_entry.h

 // 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.
 
 #ifndef RUNTIME_VM_DART_ENTRY_H_
 #define RUNTIME_VM_DART_ENTRY_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 
 namespace dart {
 
 // Forward declarations.
 class Array;
 class Closure;
 class Function;
 class Instance;
 class Integer;
 class Library;
 class Object;
 class RawArray;
 class RawInstance;
 class RawObject;
 class RawString;
 class String;
 
-// An arguments descriptor array consists of the total argument count; the
+// An arguments descriptor array consists of the type argument vector length (0
+// if none); total argument count (not counting type argument vector); the
 // positional argument count; a sequence of (name, position) pairs, sorted
 // by name, for each named optional argument; and a terminating null to
 // simplify iterating in generated code.
 class ArgumentsDescriptor : public ValueObject {
  public:
   explicit ArgumentsDescriptor(const Array& array);
 
   // Accessors.
+  intptr_t TypeArgsLen() const;
   intptr_t Count() const;
   intptr_t PositionalCount() const;
   intptr_t NamedCount() const { return Count() - PositionalCount(); }
   RawString* NameAt(intptr_t i) const;
   intptr_t PositionAt(intptr_t i) const;
   bool MatchesNameAt(intptr_t i, const String& other) const;
 
   // Generated code support.
+  static intptr_t type_args_len_offset();
   static intptr_t count_offset();
   static intptr_t positional_count_offset();
   static intptr_t first_named_entry_offset();
   static intptr_t name_offset() { return kNameOffset * kWordSize; }
   static intptr_t position_offset() { return kPositionOffset * kWordSize; }
   static intptr_t named_entry_size() { return kNamedEntrySize * kWordSize; }
 
   // Allocate and return an arguments descriptor.  The first
-  // (count - optional_arguments_names.Length()) arguments are
+  // (num_arguments - optional_arguments_names.Length()) arguments are
   // positional and the remaining ones are named optional arguments.
-  static RawArray* New(intptr_t count, const Array& optional_arguments_names);
+  // The presence of a type argument vector as first argument (not counted in
+  // num_arguments) is indicated by a non-zero type_args_len.
+  static RawArray* New(intptr_t type_args_len,
+                       intptr_t num_arguments,
+                       const Array& optional_arguments_names);
 
   // Allocate and return an arguments descriptor that has no optional
-  // arguments. All arguments are positional.
-  static RawArray* New(intptr_t count);
+  // arguments. All arguments are positional. The presence of a type argument
+  // vector as first argument (not counted in num_arguments) is indicated
+  // by a non-zero type_args_len.
+  static RawArray* New(intptr_t type_args_len, intptr_t num_arguments);
 
   // Initialize the preallocated fixed length arguments descriptors cache.
   static void InitOnce();
 
   enum { kCachedDescriptorCount = 32 };
 
  private:
   // Absolute indexes into the array.
+  // Keep these in sync with the constants in invocation_mirror_patch.dart.
   enum {
+    kTypeArgsLenIndex,
     kCountIndex,
     kPositionalCountIndex,
     kFirstNamedEntryIndex,
   };
 
   // Relative indexes into each named argument entry.
   enum {
     kNameOffset,
     kPositionOffset,
     kNamedEntrySize,
   };
 
-  static intptr_t LengthFor(intptr_t count) {
+  static intptr_t LengthFor(intptr_t num_named_arguments) {
     // Add 1 for the terminating null.
-    return kFirstNamedEntryIndex + (kNamedEntrySize * count) + 1;
+    return kFirstNamedEntryIndex + (kNamedEntrySize * num_named_arguments) + 1;
   }
 
-  static RawArray* NewNonCached(intptr_t count, bool canonicalize = true);
+  static RawArray* NewNonCached(intptr_t num_arguments,
+                                bool canonicalize = true);
 
   // Used by Simulator to parse argument descriptors.
   static intptr_t name_index(intptr_t index) {
     return kFirstNamedEntryIndex + (index * kNamedEntrySize) + kNameOffset;
   }
 
   static intptr_t position_index(intptr_t index) {
     return kFirstNamedEntryIndex + (index * kNamedEntrySize) + kPositionOffset;
   }
 
@@ skipping 17 matching lines @@
  public:
   // On success, returns a RawInstance.  On failure, a RawError.
   typedef RawObject* (*invokestub)(const Code& target_code,
                                    const Array& arguments_descriptor,
                                    const Array& arguments,
                                    Thread* thread);
 
   // Invokes the specified instance function or static function.
   // The first argument of an instance function is the receiver.
   // On success, returns a RawInstance.  On failure, a RawError.
-  // This is used when there are no named arguments in the call.
+  // This is used when there is no type argument vector and
+  // no named arguments in the call.
   static RawObject* InvokeFunction(const Function& function,
                                    const Array& arguments);
 
   // Invokes the specified instance, static, or closure function.
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* InvokeFunction(
       const Function& function,
       const Array& arguments,
       const Array& arguments_descriptor,
       uword current_sp = Thread::GetCurrentStackPointer());
 
   // Invokes the closure object given as the first argument.
   // On success, returns a RawInstance.  On failure, a RawError.
-  // This is used when there are no named arguments in the call.
+  // This is used when there is no type argument vector and
+  // no named arguments in the call.
   static RawObject* InvokeClosure(const Array& arguments);
 
   // Invokes the closure object given as the first argument.
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* InvokeClosure(const Array& arguments,
                                   const Array& arguments_descriptor);
 
   // Invokes the noSuchMethod instance function on the receiver.
   // On success, returns a RawInstance.  On failure, a RawError.
   static RawObject* InvokeNoSuchMethod(const Instance& receiver,
@@ skipping 36 matching lines @@
   //
   // Returns null on success, a RawError on failure.
   static RawObject* MapSetAt(const Instance& map,
                              const Instance& key,
                              const Instance& value);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_DART_ENTRY_H_