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//===-- ClangUtilityFunction.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_CLANGUTILITYFUNCTION_H
#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTILITYFUNCTION_H
#include <map>
#include <string>
#include <vector>
#include "ClangExpressionHelper.h"
#include "lldb/Expression/UtilityFunction.h"
#include "lldb/lldb-forward.h"
#include "lldb/lldb-private.h"
namespace lldb_private {
/// \class ClangUtilityFunction ClangUtilityFunction.h
/// "lldb/Expression/ClangUtilityFunction.h" Encapsulates a single expression
/// for use with Clang
///
/// LLDB uses expressions for various purposes, notably to call functions
/// and as a backend for the expr command. ClangUtilityFunction encapsulates
/// a self-contained function meant to be used from other code. Utility
/// functions can perform error-checking for ClangUserExpressions, or can
/// simply provide a way to push a function into the target for the debugger
/// to call later on.
class ClangUtilityFunction : public UtilityFunction {
// LLVM RTTI support
static char ID;
public:
bool isA(const void *ClassID) const override {
return ClassID == &ID || UtilityFunction::isA(ClassID);
}
static bool classof(const Expression *obj) { return obj->isA(&ID); }
class ClangUtilityFunctionHelper : public ClangExpressionHelper {
public:
ClangUtilityFunctionHelper() {}
~ClangUtilityFunctionHelper() override {}
/// Return the object that the parser should use when resolving external
/// values. May be NULL if everything should be self-contained.
ClangExpressionDeclMap *DeclMap() override {
return m_expr_decl_map_up.get();
}
void ResetDeclMap() { m_expr_decl_map_up.reset(); }
void ResetDeclMap(ExecutionContext &exe_ctx, bool keep_result_in_memory);
/// Return the object that the parser should allow to access ASTs. May be
/// NULL if the ASTs do not need to be transformed.
///
/// \param[in] passthrough
/// The ASTConsumer that the returned transformer should send
/// the ASTs to after transformation.
clang::ASTConsumer *
ASTTransformer(clang::ASTConsumer *passthrough) override {
return nullptr;
}
private:
std::unique_ptr<ClangExpressionDeclMap> m_expr_decl_map_up;
};
/// Constructor
///
/// \param[in] text
/// The text of the function. Must be a full translation unit.
///
/// \param[in] name
/// The name of the function, as used in the text.
ClangUtilityFunction(ExecutionContextScope &exe_scope, const char *text,
const char *name);
~ClangUtilityFunction() override;
ExpressionTypeSystemHelper *GetTypeSystemHelper() override {
return &m_type_system_helper;
}
ClangExpressionDeclMap *DeclMap() { return m_type_system_helper.DeclMap(); }
void ResetDeclMap() { m_type_system_helper.ResetDeclMap(); }
void ResetDeclMap(ExecutionContext &exe_ctx, bool keep_result_in_memory) {
m_type_system_helper.ResetDeclMap(exe_ctx, keep_result_in_memory);
}
bool Install(DiagnosticManager &diagnostic_manager,
ExecutionContext &exe_ctx) override;
private:
ClangUtilityFunctionHelper m_type_system_helper; ///< The map to use when
///parsing and materializing
///the expression.
};
} // namespace lldb_private
#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTILITYFUNCTION_H
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