Extract Signature from src/compiler/machine-type.h to src/signature.h

src/compiler/machine-type.h

 // Copyright 2014 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_COMPILER_MACHINE_TYPE_H_
 #define V8_COMPILER_MACHINE_TYPE_H_
 
 #include <iosfwd>
 
 #include "src/base/bits.h"
 #include "src/globals.h"
+#include "src/signature.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
 // Machine-level types and representations.
 // TODO(titzer): Use the real type system instead of MachineType.
 enum MachineType {
   // Representations.
@@ skipping 82 matching lines @@
   return -1;
 }
 
 // Gets the element size in bytes of the machine type.
 inline int ElementSizeOf(MachineType machine_type) {
   const int shift = ElementSizeLog2Of(machine_type);
   DCHECK_NE(-1, shift);
   return 1 << shift;
 }
 
-// Describes the inputs and outputs of a function or call.
-template <typename T>
-class Signature : public ZoneObject {
- public:
-  Signature(size_t return_count, size_t parameter_count, T* reps)
-      : return_count_(return_count),
-        parameter_count_(parameter_count),
-        reps_(reps) {}
-
-  size_t return_count() const { return return_count_; }
-  size_t parameter_count() const { return parameter_count_; }
-
-  T GetParam(size_t index) const {
-    DCHECK(index < parameter_count_);
-    return reps_[return_count_ + index];
-  }
-
-  T GetReturn(size_t index = 0) const {
-    DCHECK(index < return_count_);
-    return reps_[index];
-  }
-
-  // For incrementally building signatures.
-  class Builder {
-   public:
-    Builder(Zone* zone, size_t return_count, size_t parameter_count)
-        : return_count_(return_count),
-          parameter_count_(parameter_count),
-          zone_(zone),
-          rcursor_(0),
-          pcursor_(0),
-          buffer_(zone->NewArray<T>(
-              static_cast<int>(return_count + parameter_count))) {}
-
-    const size_t return_count_;
-    const size_t parameter_count_;
-
-    void AddReturn(T val) {
-      DCHECK(rcursor_ < return_count_);
-      buffer_[rcursor_++] = val;
-    }
-    void AddParam(T val) {
-      DCHECK(pcursor_ < parameter_count_);
-      buffer_[return_count_ + pcursor_++] = val;
-    }
-    Signature<T>* Build() {
-      DCHECK(rcursor_ == return_count_);
-      DCHECK(pcursor_ == parameter_count_);
-      return new (zone_) Signature<T>(return_count_, parameter_count_, buffer_);
-    }
-
-   private:
-    Zone* zone_;
-    size_t rcursor_;
-    size_t pcursor_;
-    T* buffer_;
-  };
-
- protected:
-  size_t return_count_;
-  size_t parameter_count_;
-  T* reps_;
-};
-
 typedef Signature<MachineType> MachineSignature;
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_MACHINE_TYPE_H_