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doum

2 天以前 307960b07d8cb122d9de0c8267b8cb7a63cfc605

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#include "ast.hpp"
 
namespace Sass {
 
  #define IMPLEMENT_BASE_CAST(T) \
  template<> \
  T* Cast(AST_Node* ptr) { \
    return dynamic_cast<T*>(ptr); \
  }; \
  \
  template<> \
  const T* Cast(const AST_Node* ptr) { \
    return dynamic_cast<const T*>(ptr); \
  }; \
 
  IMPLEMENT_BASE_CAST(AST_Node)
  IMPLEMENT_BASE_CAST(Expression)
  IMPLEMENT_BASE_CAST(Statement)
  IMPLEMENT_BASE_CAST(Has_Block)
  IMPLEMENT_BASE_CAST(PreValue)
  IMPLEMENT_BASE_CAST(Value)
  IMPLEMENT_BASE_CAST(List)
  IMPLEMENT_BASE_CAST(String)
  IMPLEMENT_BASE_CAST(String_Constant)
  IMPLEMENT_BASE_CAST(Supports_Condition)
  IMPLEMENT_BASE_CAST(Selector)
  IMPLEMENT_BASE_CAST(Simple_Selector)
 
}