[generators] Implement %GeneratorGetSourcePosition.

src/interpreter/interpreter-assembler.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_ASSEMBLER_H_
 #define V8_INTERPRETER_INTERPRETER_ASSEMBLER_H_
 
 #include "src/allocation.h"
 #include "src/base/smart-pointers.h"
 #include "src/builtins.h"
@@ skipping 128 matching lines @@
   }
 
   // Dispatch bytecode as wide operand variant.
   void DispatchWide(OperandScale operand_scale);
 
   // Abort with the given bailout reason.
   void Abort(BailoutReason bailout_reason);
   void AbortIfWordNotEqual(compiler::Node* lhs, compiler::Node* rhs,
                            BailoutReason bailout_reason);
 
+  // Returns the offset from the BytecodeArrayPointer of the current bytecode.
+  compiler::Node* BytecodeOffset();
+
  protected:
   Bytecode bytecode() const { return bytecode_; }
   static bool TargetSupportsUnalignedAccess();
 
  private:
   // Returns a tagged pointer to the current function's BytecodeArray object.
   compiler::Node* BytecodeArrayTaggedPointer();
-  // Returns the offset from the BytecodeArrayPointer of the current bytecode.
-  compiler::Node* BytecodeOffset();
   // Returns a raw pointer to first entry in the interpreter dispatch table.
   compiler::Node* DispatchTableRawPointer();
 
   // Returns the accumulator value without checking whether bytecode
   // uses it. This is intended to be used only in dispatch and in
   // tracing as these need to bypass accumulator use validity checks.
   compiler::Node* GetAccumulatorUnchecked();
 
   // Saves and restores interpreter bytecode offset to the interpreter stack
   // frame when performing a call.
@@ skipping 69 matching lines @@
   compiler::Node* stack_pointer_before_call_;
 
   DISALLOW_COPY_AND_ASSIGN(InterpreterAssembler);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_INTERPRETER_ASSEMBLER_H_