llvm/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionVariable.h

//===-- ClangExpressionVariable.h -------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXPRESSIONVARIABLE_H
#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXPRESSIONVARIABLE_H

#include <csignal>
#include <cstdint>
#include <cstring>

#include <map>
#include <string>
#include <vector>

#include "llvm/Support/Casting.h"

#include "lldb/Core/Value.h"
#include "lldb/Expression/ExpressionVariable.h"
#include "lldb/Symbol/TaggedASTType.h"
#include "lldb/Utility/ConstString.h"
#include "lldb/lldb-public.h"

namespace llvm {
class Value;
}

namespace clang {
class NamedDecl;
}

namespace lldb_private {

class ValueObjectConstResult;

/// \class ClangExpressionVariable ClangExpressionVariable.h
/// "lldb/Expression/ClangExpressionVariable.h" Encapsulates one variable for
/// the expression parser.
///
/// The expression parser uses variables in three different contexts:
///
/// First, it stores persistent variables along with the process for use in
/// expressions.  These persistent variables contain their own data and are
/// typed.
///
/// Second, in an interpreted expression, it stores the local variables for
/// the expression along with the expression.  These variables contain their
/// own data and are typed.
///
/// Third, in a JIT-compiled expression, it stores the variables that the
/// expression needs to have materialized and dematerialized at each
/// execution.  These do not contain their own data but are named and typed.
///
/// This class supports all of these use cases using simple type polymorphism,
/// and provides necessary support methods.  Its interface is RTTI-neutral.
class ClangExpressionVariable
    : public llvm::RTTIExtends<ClangExpressionVariable, ExpressionVariable> { … };

} // namespace lldb_private

#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXPRESSIONVARIABLE_H