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110 lines
3.6 KiB
110 lines
3.6 KiB
//===-- ClangUtilityFunction.h ----------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTILITYFUNCTION_H
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#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTILITYFUNCTION_H
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#include <map>
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#include <string>
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#include <vector>
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#include "ClangExpressionHelper.h"
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#include "lldb/Expression/UtilityFunction.h"
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#include "lldb/lldb-forward.h"
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#include "lldb/lldb-private.h"
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namespace lldb_private {
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/// \class ClangUtilityFunction ClangUtilityFunction.h
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/// "lldb/Expression/ClangUtilityFunction.h" Encapsulates a single expression
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/// for use with Clang
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///
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/// LLDB uses expressions for various purposes, notably to call functions
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/// and as a backend for the expr command. ClangUtilityFunction encapsulates
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/// a self-contained function meant to be used from other code. Utility
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/// functions can perform error-checking for ClangUserExpressions, or can
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/// simply provide a way to push a function into the target for the debugger
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/// to call later on.
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class ClangUtilityFunction : public UtilityFunction {
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// LLVM RTTI support
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static char ID;
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public:
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bool isA(const void *ClassID) const override {
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return ClassID == &ID || UtilityFunction::isA(ClassID);
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}
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static bool classof(const Expression *obj) { return obj->isA(&ID); }
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/// Constructor
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///
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/// \param[in] text
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/// The text of the function. Must be a full translation unit.
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///
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/// \param[in] name
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/// The name of the function, as used in the text.
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ClangUtilityFunction(ExecutionContextScope &exe_scope, std::string text,
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std::string name);
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~ClangUtilityFunction() override;
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ExpressionTypeSystemHelper *GetTypeSystemHelper() override {
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return &m_type_system_helper;
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}
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ClangExpressionDeclMap *DeclMap() { return m_type_system_helper.DeclMap(); }
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void ResetDeclMap() { m_type_system_helper.ResetDeclMap(); }
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void ResetDeclMap(ExecutionContext &exe_ctx, bool keep_result_in_memory) {
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m_type_system_helper.ResetDeclMap(exe_ctx, keep_result_in_memory);
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}
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bool Install(DiagnosticManager &diagnostic_manager,
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ExecutionContext &exe_ctx) override;
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private:
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class ClangUtilityFunctionHelper : public ClangExpressionHelper {
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public:
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ClangUtilityFunctionHelper() {}
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~ClangUtilityFunctionHelper() override {}
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/// Return the object that the parser should use when resolving external
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/// values. May be NULL if everything should be self-contained.
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ClangExpressionDeclMap *DeclMap() override {
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return m_expr_decl_map_up.get();
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}
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void ResetDeclMap() { m_expr_decl_map_up.reset(); }
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void ResetDeclMap(ExecutionContext &exe_ctx, bool keep_result_in_memory);
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/// Return the object that the parser should allow to access ASTs. May be
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/// nullptr if the ASTs do not need to be transformed.
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///
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/// \param[in] passthrough
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/// The ASTConsumer that the returned transformer should send
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/// the ASTs to after transformation.
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clang::ASTConsumer *
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ASTTransformer(clang::ASTConsumer *passthrough) override {
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return nullptr;
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}
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private:
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std::unique_ptr<ClangExpressionDeclMap> m_expr_decl_map_up;
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};
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/// The map to use when parsing and materializing the expression.
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ClangUtilityFunctionHelper m_type_system_helper;
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};
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} // namespace lldb_private
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#endif // LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGUTILITYFUNCTION_H
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