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//===-- ClangExpressionSourceCode.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_CLANGEXPRESSIONSOURCECODE_H
#define LLDB_SOURCE_PLUGINS_EXPRESSIONPARSER_CLANG_CLANGEXPRESSIONSOURCECODE_H
#include "lldb/Expression/Expression.h"
#include "lldb/Expression/ExpressionSourceCode.h"
#include "lldb/lldb-enumerations.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"
#include <string>
namespace lldb_private {
class ExecutionContext;
class ClangExpressionSourceCode : public ExpressionSourceCode {
public:
/// The file name we use for the wrapper code that we inject before
/// the user expression.
static const llvm::StringRef g_prefix_file_name;
static const char *g_expression_prefix;
static const char *g_expression_suffix;
/// The possible ways an expression can be wrapped.
enum class WrapKind {
/// Wrapped in a non-static member function of a C++ class.
CppMemberFunction,
/// Wrapped in an instance Objective-C method.
ObjCInstanceMethod,
/// Wrapped in a static Objective-C method.
ObjCStaticMethod,
/// Wrapped in a non-member function.
/// Note that this is also used for static member functions of a C++ class.
Function
};
static ClangExpressionSourceCode *CreateWrapped(llvm::StringRef filename,
llvm::StringRef prefix,
llvm::StringRef body,
WrapKind wrap_kind) {
return new ClangExpressionSourceCode(filename, "$__lldb_expr", prefix, body,
Wrap, wrap_kind);
}
/// Generates the source code that will evaluate the expression.
///
/// \param text output parameter containing the source code string.
/// \param exe_ctx The execution context in which the expression will be
/// evaluated.
/// \param add_locals True iff local variables should be injected into the
/// expression source code.
/// \param force_add_all_locals True iff all local variables should be
/// injected even if they are not used in the expression.
/// \param modules A list of (C++) modules that the expression should import.
///
/// \return true iff the source code was successfully generated.
bool GetText(std::string &text, ExecutionContext &exe_ctx, bool add_locals,
bool force_add_all_locals,
llvm::ArrayRef<std::string> modules) const;
// Given a string returned by GetText, find the beginning and end of the body
// passed to CreateWrapped. Return true if the bounds could be found. This
// will also work on text with FixItHints applied.
bool GetOriginalBodyBounds(std::string transformed_text,
size_t &start_loc, size_t &end_loc);
protected:
ClangExpressionSourceCode(llvm::StringRef filename, llvm::StringRef name,
llvm::StringRef prefix, llvm::StringRef body,
Wrapping wrap, WrapKind wrap_kind);
private:
void AddLocalVariableDecls(const lldb::VariableListSP &var_list_sp,
StreamString &stream,
const std::string &expr) const;
/// String marking the start of the user expression.
std::string m_start_marker;
/// String marking the end of the user expression.
std::string m_end_marker;
/// How the expression has been wrapped.
const WrapKind m_wrap_kind;
};
} // namespace lldb_private
#endif
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