diagnostic-format.h

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/* Declarations for managing different output formats for diagnostics.
   Copyright (C) 2023-2025 Free Software Foundation, Inc.
   Contributed by David Malcolm <dmalcolm@redhat.com>.
 
This file is part of GCC.
 
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
 
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.
 
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */
 
#ifndef GCC_DIAGNOSTIC_FORMAT_H
#define GCC_DIAGNOSTIC_FORMAT_H
 
#include "diagnostic.h"
 
class diagnostic_per_format_buffer;
 
/* Abstract base class for a particular output format for diagnostics;
   each value of -fdiagnostics-output-format= will have its own
   implementation.  */
 
class diagnostic_output_format
{
public:
  virtual ~diagnostic_output_format () {}
 
  virtual void dump (FILE *out, int indent) const;
 
  /* Vfunc for notifying this format what the primary input file is,
     e.g. for titles of HTML, for SARIF's artifact metadata.  */
  virtual void set_main_input_filename (const char *) {}
 
  /* Vfunc for making an appropriate diagnostic_per_format_buffer
     subclass for this format.  */
  virtual std::unique_ptr<diagnostic_per_format_buffer>
  make_per_format_buffer () = 0;
 
  /* Vfunc to be called when call a diagnostic_buffer is set on
     a diagnostic_context, to update this format.  The per_format_buffer
     will be one created by make_per_format_buffer above and thus be
     of the correct subclass.  */
  virtual void set_buffer (diagnostic_per_format_buffer *) = 0;
 
  virtual void on_begin_group () = 0;
  virtual void on_end_group () = 0;
 
  /* Vfunc with responsibility for phase 3 of formatting the message
     and "printing" the result.  */
  virtual void on_report_diagnostic (const diagnostic_info &,
                                     diagnostic_t orig_diag_kind) = 0;
 
  virtual void on_report_verbatim (text_info &);
 
  virtual void on_diagram (const diagnostic_diagram &diagram) = 0;
  virtual void after_diagnostic (const diagnostic_info &) = 0;
  virtual bool machine_readable_stderr_p () const = 0;
  virtual bool follows_reference_printer_p () const = 0;
 
  /* Vfunc called when the diagnostic_context changes its
     reference printer (either to a new subclass of pretty_printer
     or when color/url options change).
     Subclasses should update their m_printer accordingly.  */
  virtual void update_printer () = 0;
 
  diagnostic_context &get_context () const { return m_context; }
  pretty_printer *get_printer () const { return m_printer.get (); }
 
  text_art::theme *get_diagram_theme () const
  {
    return m_context.get_diagram_theme ();
  }
  text_art::theme *get_diagram_theme () const {…}
 
  void DEBUG_FUNCTION dump () const { dump (stderr, 0); }
 
protected:
  diagnostic_output_format (diagnostic_context &context)
  : m_context (context),
    m_printer (context.clone_printer ())
  {}
  diagnostic_output_format (diagnostic_context &context) {…}
 
protected:
  diagnostic_context &m_context;
  std::unique_ptr<pretty_printer> m_printer;
};
class diagnostic_output_format {…};
 
extern void
diagnostic_output_format_init (diagnostic_context &,
                               const char *main_input_filename_,
                               const char *base_file_name,
                               enum diagnostics_output_format,
                               bool json_formatting);
 
extern diagnostic_output_format &
diagnostic_output_format_init_json_stderr (diagnostic_context &context,
                                           bool formatted);
extern diagnostic_output_format &
diagnostic_output_format_init_json_file (diagnostic_context &context,
                                         bool formatted,
                                         const char *base_file_name);
 
#endif /* ! GCC_DIAGNOSTIC_FORMAT_H */