[stubs] Using template magic to get the call interface descriptor type from callable.

src/interpreter/interpreter.h

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_INTERPRETER_INTERPRETER_H_
 #define V8_INTERPRETER_INTERPRETER_H_
 
 #include <memory>
 
 // Clients of this interface shouldn't depend on lots of interpreter internals.
@@ skipping 65 matching lines @@
   template <class Generator>
   void DoBinaryOp(InterpreterAssembler* assembler);
 
   // Generates code to perform the binary operation via |Generator| using
   // an immediate value rather the accumulator as the rhs operand.
   template <class Generator>
   void DoBinaryOpWithImmediate(InterpreterAssembler* assembler);
 
   // Generates code to perform the unary operation via |callable| and stores
   // the result to the accumulator.
-  void DoUnaryOp(Callable callable, InterpreterAssembler* assembler);
+  void DoUnaryOp(const Callable& callable, InterpreterAssembler* assembler);
 
   // Generates code to perform the unary operation via |Generator|.
   template <class Generator>
   void DoUnaryOp(InterpreterAssembler* assembler);
 
   // Generates code to perform the comparison operation associated with
   // |compare_op|.
   void DoCompareOp(Token::Value compare_op, InterpreterAssembler* assembler);
 
   // Generates code to perform a global store via |ic|.
+  template <typename Descriptor>
   void DoStaGlobal(Callable ic, InterpreterAssembler* assembler);
 
   // Generates code to perform a named property store via |ic|.
+  template <typename Descriptor>
   void DoStoreIC(Callable ic, InterpreterAssembler* assembler);
 
   // Generates code to perform a keyed property store via |ic|.
+  template <typename Descriptor>
   void DoKeyedStoreIC(Callable ic, InterpreterAssembler* assembler);
 
   // Generates code to perform a JS call that collects type feedback.
   void DoJSCall(InterpreterAssembler* assembler, TailCallMode tail_call_mode);
 
   // Generates code to perform a runtime call.
   void DoCallRuntimeCommon(InterpreterAssembler* assembler);
 
   // Generates code to perform a runtime call returning a pair.
   void DoCallRuntimeForPairCommon(InterpreterAssembler* assembler);
@@ skipping 16 matching lines @@
   void DoStaLookupSlot(LanguageMode language_mode,
                        InterpreterAssembler* assembler);
 
   // Generates a node with the undefined constant.
   compiler::Node* BuildLoadUndefined(InterpreterAssembler* assembler);
 
   // Generates code to load a context slot.
   compiler::Node* BuildLoadContextSlot(InterpreterAssembler* assembler);
 
   // Generates code to load a global.
+  template <typename Descriptor>
   compiler::Node* BuildLoadGlobal(Callable ic, InterpreterAssembler* assembler);
 
   // Generates code to load a named property.
+  template <typename Descriptor>
   compiler::Node* BuildLoadNamedProperty(Callable ic,
                                          InterpreterAssembler* assembler);
 
   // Generates code to load a keyed property.
+  template <typename Descriptor>
   compiler::Node* BuildLoadKeyedProperty(Callable ic,
                                          InterpreterAssembler* assembler);
 
   // Generates code to prepare the result for ForInPrepare. Cache data
   // are placed into the consecutive series of registers starting at
   // |output_register|.
   void BuildForInPrepareResult(compiler::Node* output_register,
                                compiler::Node* cache_type,
                                compiler::Node* cache_array,
                                compiler::Node* cache_length,
                                InterpreterAssembler* assembler);
 
   // Generates code to perform the unary operation via |callable|.
-  compiler::Node* BuildUnaryOp(Callable callable,
+  compiler::Node* BuildUnaryOp(const Callable& callable,
                                InterpreterAssembler* assembler);
 
   uintptr_t GetDispatchCounter(Bytecode from, Bytecode to) const;
 
   // Get dispatch table index of bytecode.
   static size_t GetDispatchTableIndex(Bytecode bytecode,
                                       OperandScale operand_scale);
 
   bool IsDispatchTableInitialized();
 
   static const int kNumberOfWideVariants = 3;
   static const int kDispatchTableSize = kNumberOfWideVariants * (kMaxUInt8 + 1);
   static const int kNumberOfBytecodes = static_cast<int>(Bytecode::kLast) + 1;
 
   Isolate* isolate_;
   Address dispatch_table_[kDispatchTableSize];
   std::unique_ptr<uintptr_t[]> bytecode_dispatch_counters_table_;
 
   DISALLOW_COPY_AND_ASSIGN(Interpreter);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_INTERPRETER_H_