[objects.h splitting] Move out ConstantElementsPair and BoileplateDescriptor.

src/ast/ast.h

 // Copyright 2012 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_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-types.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
 #include "src/ast/variables.h"
 #include "src/bailout-reason.h"
 #include "src/base/flags.h"
 #include "src/factory.h"
 #include "src/globals.h"
 #include "src/isolate.h"
 #include "src/label.h"
 #include "src/list.h"
+#include "src/objects/literal-objects.h"
 #include "src/parsing/token.h"
 #include "src/runtime/runtime.h"
 #include "src/small-pointer-list.h"
 
 namespace v8 {
 namespace internal {
 
 // The abstract syntax tree is an intermediate, light-weight
 // representation of the parsed JavaScript code suitable for
 // compilation to native code.
@@ skipping 1518 matching lines @@
 };
 
 
 // An array literal has a literals object that is used
 // for minimizing the work when constructing it at runtime.
 class ArrayLiteral final : public MaterializedLiteral {
  public:
   Handle<ConstantElementsPair> constant_elements() const {
     return constant_elements_;
   }
   ElementsKind constant_elements_kind() const {

[Michael Starzinger, 2017/01/27 14:52:28]

suggestion: As discussed offline, it looks like this is is the only place that
actually needs the "literal-objects.h" file. If we were to move the
implementation of this one accessor into the "ast.cc" then we would not include
the "literal-objects.h" header in "ast.h". Note that I didn't verify this
theory, so I might be completely wrong. Also I am totally fine with landing this
CL as it is.

[marja, 2017/01/27 14:57:06]

Done.

     return static_cast<ElementsKind>(constant_elements()->elements_kind());
   }
 
   ZoneList<Expression*>* values() const { return values_; }
 
   BailoutId CreateLiteralId() const { return BailoutId(local_id(0)); }
 
   // Return an AST id for an element that is used in simulate instructions.
   BailoutId GetIdForElement(int i) { return BailoutId(local_id(i + 1)); }
 
@@ skipping 2079 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_