45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
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//--------------------------------------------------------------------*- C++ -*-
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// CLING - the C++ LLVM-based InterpreterG :)
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// version: $Id$
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// author: Vassil Vassilev <vvasilev@cern.ch>
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//------------------------------------------------------------------------------
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#ifndef CLING_AST_NODE_ERASER
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#define CLING_AST_NODE_ERASER
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namespace clang {
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class Sema;
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}
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namespace cling {
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class Transaction;
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///\brief A simple eraser class that removes already created AST Nodes.
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///
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class ASTNodeEraser {
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private:
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clang::Sema* m_Sema;
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public:
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ASTNodeEraser(clang::Sema* S);
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~ASTNodeEraser();
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///\brief Rolls back given transaction from the AST.
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///
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/// Removing includes reseting various internal stuctures in the compiler to
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/// their previous states. For example it resets the lookup tables if the
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/// declaration has name and can be looked up; Reverts the redeclaration
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/// chain if the declaration was redeclarable and so on.
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/// Note1: that the code generated for the declaration is not removed yet.
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/// Note2: does not do dependency analysis.
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///
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///\param[in] T - The transaction to be removed.
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///\returns true on success.
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///
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bool RevertTransaction(const Transaction* T);
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};
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} // end namespace cling
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#endif // CLING_AST_NODE_ERASER
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