Mercurial > octave
view libinterp/corefcn/input.h @ 27502:f62f1170ad98
in base_reader, store reference to interpreter instead of lexer
* input.h, input.cc (base_reader::m_interpreter): New data member.
(base_reader::m_lexer): Delete.
(terminal_reader, file_reader, eval_string_reader, input_reader):
Change class constructors to accept interpreter object instead of
lexer. Change all uses.
(base_reader::octave_gets, file_reader::get_input): Access interpreter
state using stored reference to interpreter instead of global functions.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 16 Oct 2019 08:45:39 -0400 |
parents | c23aee2104de |
children | 1bc237447e56 |
line wrap: on
line source
/* Copyright (C) 1993-2019 John W. Eaton This file is part of Octave. Octave 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 of the License, or (at your option) any later version. Octave 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 Octave; see the file COPYING. If not, see <https://www.gnu.org/licenses/>. */ // Use the GNU readline library for command line editing and hisory. #if ! defined (octave_input_h) #define octave_input_h 1 #include "octave-config.h" #include <cstdio> #include <string> #include "hook-fcn.h" #include "oct-refcount.h" #include "oct-time.h" #include "ovl.h" #include "pager.h" // TRUE after a call to completion_matches. extern bool octave_completion_matches_called; // TRUE if the plotting system has requested a call to drawnow at // the next user prompt. extern OCTINTERP_API bool Vdrawnow_requested; // TRUE if we are not executing a command direct from debug> prompt. extern OCTINTERP_API bool Vtrack_line_num; extern octave::sys::time Vlast_prompt_time; class octave_value; namespace octave { class interpreter; class input_system { public: input_system (interpreter& interp); void initialize (bool line_editing); octave_value PS1 (const octave_value_list& args, int nargout); std::string PS1 (void) const { return m_PS1; } std::string PS1 (const std::string& s) { std::string val = m_PS1; m_PS1 = s; return val; } void set_PS1 (const std::string& s) { m_PS1 = s; } octave_value PS2 (const octave_value_list& args, int nargout); std::string PS2 (void) const { return m_PS2; } std::string PS2 (const std::string& s) { std::string val = m_PS2; m_PS2 = s; return val; } void set_PS2 (const std::string& s) { m_PS2 = s; } std::string last_debugging_command (void) const { return m_last_debugging_command; } std::string last_debugging_command (const std::string& s) { std::string val = m_last_debugging_command; m_last_debugging_command = s; return val; } octave_value completion_append_char (const octave_value_list& args, int nargout); char completion_append_char (void) const { return m_completion_append_char; } char completion_append_char (char c) { char val = m_completion_append_char; m_completion_append_char = c; return val; } void set_completion_append_char (char c) { m_completion_append_char = c; } octave_value gud_mode (const octave_value_list& args, int nargout); bool gud_mode (void) const { return m_gud_mode; } bool gud_mode (bool flag) { bool val = m_gud_mode; m_gud_mode = flag; return val; } void set_gud_mode (bool flag) { m_gud_mode = flag; } octave_value mfile_encoding (const octave_value_list& args, int nargout); std::string mfile_encoding (void) const { return m_mfile_encoding; } std::string mfile_encoding (const std::string& s) { std::string val = m_mfile_encoding; m_mfile_encoding = s; return val; } void set_mfile_encoding (const std::string& s) { m_mfile_encoding = s; } bool yes_or_no (const std::string& prompt); std::string interactive_input (const std::string& s, bool& eof); octave_value_list get_user_input (const octave_value_list& args, int nargout); bool have_input_event_hooks (void) const; void add_input_event_hook (const hook_function& hook_fcn); bool remove_input_event_hook (const std::string& hook_fcn_id); void clear_input_event_hooks (void); void run_input_event_hooks (void); private: interpreter& m_interpreter; // Primary prompt string. std::string m_PS1; // Secondary prompt string. std::string m_PS2; // Character to append after successful command-line completion // attempts. char m_completion_append_char; // TRUE if we are running in the Emacs GUD mode. bool m_gud_mode; // Codepage which is used to read .m files std::string m_mfile_encoding; // If we are in debugging mode, this is the last command entered, // so that we can repeat the previous command if the user just // types RET. std::string m_last_debugging_command; hook_function_list m_input_event_hook_functions; std::string gnu_readline (const std::string& s, bool& eof) const; }; class base_reader { public: friend class input_reader; base_reader (interpreter& interp) : m_interpreter (interp), m_count (1), m_pflag (0) { } base_reader (const base_reader& x) : m_interpreter (x.m_interpreter), m_count (1), m_pflag (x.m_pflag) { } virtual ~base_reader (void) = default; virtual std::string get_input (bool& eof) = 0; virtual std::string input_source (void) const { return s_in_src; } void reset (void) { promptflag (1); } void increment_promptflag (void) { m_pflag++; } void decrement_promptflag (void) { m_pflag--; } int promptflag (void) const { return m_pflag; } int promptflag (int n) { int retval = m_pflag; m_pflag = n; return retval; } std::string octave_gets (bool& eof); virtual bool input_from_terminal (void) const { return false; } virtual bool input_from_file (void) const { return false; } virtual bool input_from_eval_string (void) const { return false; } protected: interpreter& m_interpreter; private: refcount<octave_idx_type> m_count; int m_pflag; static const std::string s_in_src; }; class input_reader { public: input_reader (interpreter& interp); input_reader (interpreter& interp, FILE *file); input_reader (interpreter& interp, const std::string& str); input_reader (const input_reader& ir) { m_rep = ir.m_rep; m_rep->m_count++; } input_reader& operator = (const input_reader& ir) { if (&ir != this) { m_rep = ir.m_rep; m_rep->m_count++; } return *this; } ~input_reader (void) { if (--m_rep->m_count == 0) delete m_rep; } void reset (void) { return m_rep->reset (); } void increment_promptflag (void) { m_rep->increment_promptflag (); } void decrement_promptflag (void) { m_rep->decrement_promptflag (); } int promptflag (void) const { return m_rep->promptflag (); } int promptflag (int n) { return m_rep->promptflag (n); } std::string get_input (bool& eof) { return m_rep->get_input (eof); } std::string input_source (void) const { return m_rep->input_source (); } bool input_from_terminal (void) const { return m_rep->input_from_terminal (); } bool input_from_file (void) const { return m_rep->input_from_file (); } bool input_from_eval_string (void) const { return m_rep->input_from_eval_string (); } private: base_reader *m_rep; }; } #if defined (OCTAVE_USE_DEPRECATED_FUNCTIONS) OCTAVE_DEPRECATED (5, "use 'octave::input_system::yes_or_no' instead") extern bool octave_yes_or_no (const std::string& prompt); OCTAVE_DEPRECATED (5, "use 'octave::input_system::clear_input_event_hooks' instead") extern void remove_input_event_hook_functions (void); OCTAVE_DEPRECATED (5, "this function will be removed in a future version of Octave") extern OCTINTERP_API FILE * get_input_from_stdin (void); #endif #endif