include/lldb/Expression/ExpressionSourceCode.h

//===-- ExpressionSourceCode.h ----------------------------------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef liblldb_ExpressionSourceCode_h
#define liblldb_ExpressionSourceCode_h

#include "lldb/Expression/Expression.h"
#include "lldb/lldb-enumerations.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/StringRef.h"

#include <string>

namespace lldb_private {

class ExecutionContext;

class ExpressionSourceCode {
public:
  static const char *g_expression_prefix;

  static ExpressionSourceCode *CreateWrapped(const char *prefix,
                                             const char *body) {
    return new ExpressionSourceCode("$__lldb_expr", prefix, body, true);
  }

  static ExpressionSourceCode *CreateUnwrapped(const char *name,
                                               const char *body) {
    return new ExpressionSourceCode(name, "", body, false);
  }

  bool NeedsWrapping() const { return m_wrap; }

  const char *GetName() const { return m_name.c_str(); }

  uint32_t GetNumBodyLines();

  bool GetText(std::string &text, lldb::LanguageType wrapping_language,
               uint32_t language_flags,
               const EvaluateExpressionOptions &options,
               const Expression::SwiftGenericInfo &generic_info,
               ExecutionContext &exe_ctx, uint32_t &first_body_line) const;

  static bool
  SaveExpressionTextToTempFile(llvm::StringRef text,
                               const EvaluateExpressionOptions &options,
                               std::string &expr_source_path);
  // 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.
  static bool GetOriginalBodyBounds(std::string transformed_text,
                                    lldb::LanguageType wrapping_language,
                                    size_t &start_loc, size_t &end_loc);

private:
  ExpressionSourceCode(const char *name, const char *prefix, const char *body,
                       bool wrap)
      : m_name(name), m_prefix(prefix), m_body(body), m_num_body_lines(0),
        m_wrap(wrap) {}

  std::string m_name;
  std::string m_prefix;
  std::string m_body;
  uint32_t m_num_body_lines;
  bool m_wrap;
};

} // namespace lldb_private

#endif