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jak-project/third-party/replxx/src/replxx_impl.hxx
T
Tyler Wilding 8bba3d7fd7 REPL: Add clear-screen / auto-complete / basic hints and syntax highlighting (#316) 
* swap to replxx from linenoise

* repl: Implement form auto-tab-completion

* repl: color coordinate the prompts

* repl: Add some basic syntax highlighting, bracket pairs and forms (all one color)

* repl: A more consistent starting screen for the repl

* repl: bug fix for auto-complete

* debug linux

* linting
2021-03-07 23:41:21 -05:00

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/*
* Copyright (c) 2017-2018, Marcin Konarski (amok at codestation.org)
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef HAVE_REPLXX_REPLXX_IMPL_HXX_INCLUDED
#define HAVE_REPLXX_REPLXX_IMPL_HXX_INCLUDED 1
#include <vector>
#include <deque>
#include <memory>
#include <string>
#include <unordered_map>
#include <thread>
#include <mutex>
#include <chrono>
#include "replxx.hxx"
#include "history.hxx"
#include "killring.hxx"
#include "utf8string.hxx"
#include "prompt.hxx"
namespace replxx {
class Replxx::ReplxxImpl {
public:
class Completion {
UnicodeString _text;
Replxx::Color _color;
public:
Completion( UnicodeString const& text_, Replxx::Color color_ )
: _text( text_ )
, _color( color_ ) {
}
Completion( Replxx::Completion const& completion_ )
: _text( completion_.text() )
, _color( completion_.color() ) {
}
Completion( Completion const& ) = default;
Completion& operator = ( Completion const& ) = default;
Completion( Completion&& ) = default;
Completion& operator = ( Completion&& ) = default;
UnicodeString const& text( void ) const {
return ( _text );
}
Replxx::Color color( void ) const {
return ( _color );
}
};
typedef std::vector<Completion> completions_t;
typedef std::vector<UnicodeString> hints_t;
typedef std::unique_ptr<char[]> utf8_buffer_t;
typedef std::unique_ptr<char32_t[]> input_buffer_t;
typedef std::vector<char> char_widths_t;
typedef std::vector<char32_t> display_t;
typedef std::deque<char32_t> key_presses_t;
typedef std::deque<std::string> messages_t;
enum class HINT_ACTION {
REGENERATE,
REPAINT,
TRIM,
SKIP
};
typedef std::unordered_map<std::string, Replxx::key_press_handler_t> named_actions_t;
typedef Replxx::ACTION_RESULT ( ReplxxImpl::* key_press_handler_raw_t )( char32_t );
typedef std::unordered_map<int, Replxx::key_press_handler_t> key_press_handlers_t;
private:
typedef int long long unsigned action_trait_t;
static action_trait_t const NOOP = 0;
static action_trait_t const WANT_REFRESH = 1;
static action_trait_t const RESET_KILL_ACTION = 2;
static action_trait_t const SET_KILL_ACTION = 4;
static action_trait_t const DONT_RESET_PREFIX = 8;
static action_trait_t const DONT_RESET_COMPLETIONS = 16;
static action_trait_t const HISTORY_RECALL_MOST_RECENT = 32;
static action_trait_t const DONT_RESET_HIST_YANK_INDEX = 64;
private:
mutable Utf8String _utf8Buffer;
UnicodeString _data;
char_widths_t _charWidths; // character widths from mk_wcwidth()
display_t _display;
int _displayInputLength;
UnicodeString _hint;
int _pos; // character position in buffer ( 0 <= _pos <= _len )
int _prefix; // prefix length used in common prefix search
int _hintSelection; // Currently selected hint.
History _history;
KillRing _killRing;
int long long _lastRefreshTime;
bool _refreshSkipped;
int _lastYankSize;
int _maxHintRows;
int _hintDelay;
std::string _breakChars;
int _completionCountCutoff;
bool _overwrite;
bool _doubleTabCompletion;
bool _completeOnEmpty;
bool _beepOnAmbiguousCompletion;
bool _immediateCompletion;
bool _bracketedPaste;
bool _noColor;
named_actions_t _namedActions;
key_press_handlers_t _keyPressHandlers;
Terminal _terminal;
std::thread::id _currentThread;
Prompt _prompt;
Replxx::modify_callback_t _modifyCallback;
Replxx::completion_callback_t _completionCallback;
Replxx::highlighter_callback_t _highlighterCallback;
Replxx::hint_callback_t _hintCallback;
key_presses_t _keyPresses;
messages_t _messages;
completions_t _completions;
int _completionContextLength;
int _completionSelection;
std::string _preloadedBuffer; // used with set_preload_buffer
std::string _errorMessage;
UnicodeString _previousSearchText; // remembered across invocations of replxx_input()
bool _modifiedState;
Replxx::Color _hintColor;
hints_t _hintsCache;
int _hintContextLenght;
Utf8String _hintSeed;
mutable std::mutex _mutex;
public:
ReplxxImpl( FILE*, FILE*, FILE* );
virtual ~ReplxxImpl( void );
void set_modify_callback( Replxx::modify_callback_t const& fn );
void set_completion_callback( Replxx::completion_callback_t const& fn );
void set_highlighter_callback( Replxx::highlighter_callback_t const& fn );
void set_hint_callback( Replxx::hint_callback_t const& fn );
char const* input( std::string const& prompt );
void history_add( std::string const& line );
bool history_sync( std::string const& filename );
bool history_save( std::string const& filename );
bool history_load( std::string const& filename );
void history_clear( void );
Replxx::HistoryScan::impl_t history_scan( void ) const;
int history_size( void ) const;
void set_preload_buffer(std::string const& preloadText);
void set_word_break_characters( char const* wordBreakers );
void set_max_hint_rows( int count );
void set_hint_delay( int milliseconds );
void set_double_tab_completion( bool val );
void set_complete_on_empty( bool val );
void set_beep_on_ambiguous_completion( bool val );
void set_immediate_completion( bool val );
void set_unique_history( bool );
void set_no_color( bool val );
void set_max_history_size( int len );
void set_completion_count_cutoff( int len );
int install_window_change_handler( void );
void enable_bracketed_paste( void );
void disable_bracketed_paste( void );
void print( char const*, int );
Replxx::ACTION_RESULT clear_screen( char32_t );
void emulate_key_press( char32_t );
Replxx::ACTION_RESULT invoke( Replxx::ACTION, char32_t );
void bind_key( char32_t, Replxx::key_press_handler_t );
void bind_key_internal( char32_t, char const* );
Replxx::State get_state( void ) const;
void set_state( Replxx::State const& );
private:
ReplxxImpl( ReplxxImpl const& ) = delete;
ReplxxImpl& operator = ( ReplxxImpl const& ) = delete;
private:
void preload_puffer( char const* preloadText );
int get_input_line( void );
Replxx::ACTION_RESULT action( action_trait_t, key_press_handler_raw_t const&, char32_t );
Replxx::ACTION_RESULT insert_character( char32_t );
Replxx::ACTION_RESULT go_to_begining_of_line( char32_t );
Replxx::ACTION_RESULT go_to_end_of_line( char32_t );
Replxx::ACTION_RESULT move_one_char_left( char32_t );
Replxx::ACTION_RESULT move_one_char_right( char32_t );
Replxx::ACTION_RESULT move_one_word_left( char32_t );
Replxx::ACTION_RESULT move_one_word_right( char32_t );
Replxx::ACTION_RESULT kill_word_to_left( char32_t );
Replxx::ACTION_RESULT kill_word_to_right( char32_t );
Replxx::ACTION_RESULT kill_to_whitespace_to_left( char32_t );
Replxx::ACTION_RESULT kill_to_begining_of_line( char32_t );
Replxx::ACTION_RESULT kill_to_end_of_line( char32_t );
Replxx::ACTION_RESULT yank( char32_t );
Replxx::ACTION_RESULT yank_cycle( char32_t );
Replxx::ACTION_RESULT yank_last_arg( char32_t );
Replxx::ACTION_RESULT capitalize_word( char32_t );
Replxx::ACTION_RESULT lowercase_word( char32_t );
Replxx::ACTION_RESULT uppercase_word( char32_t );
Replxx::ACTION_RESULT transpose_characters( char32_t );
Replxx::ACTION_RESULT abort_line( char32_t );
Replxx::ACTION_RESULT send_eof( char32_t );
Replxx::ACTION_RESULT delete_character( char32_t );
Replxx::ACTION_RESULT backspace_character( char32_t );
Replxx::ACTION_RESULT commit_line( char32_t );
Replxx::ACTION_RESULT history_next( char32_t );
Replxx::ACTION_RESULT history_previous( char32_t );
Replxx::ACTION_RESULT history_move( bool );
Replxx::ACTION_RESULT history_first( char32_t );
Replxx::ACTION_RESULT history_last( char32_t );
Replxx::ACTION_RESULT history_jump( bool );
Replxx::ACTION_RESULT hint_next( char32_t );
Replxx::ACTION_RESULT hint_previous( char32_t );
Replxx::ACTION_RESULT hint_move( bool );
Replxx::ACTION_RESULT toggle_overwrite_mode( char32_t );
#ifndef _WIN32
Replxx::ACTION_RESULT verbatim_insert( char32_t );
Replxx::ACTION_RESULT suspend( char32_t );
#endif
Replxx::ACTION_RESULT complete_line( char32_t );
Replxx::ACTION_RESULT complete_next( char32_t );
Replxx::ACTION_RESULT complete_previous( char32_t );
Replxx::ACTION_RESULT complete( bool );
Replxx::ACTION_RESULT incremental_history_search( char32_t startChar );
Replxx::ACTION_RESULT common_prefix_search( char32_t startChar );
Replxx::ACTION_RESULT bracketed_paste( char32_t startChar );
char32_t read_char( HINT_ACTION = HINT_ACTION::SKIP );
char const* read_from_stdin( void );
char32_t do_complete_line( bool );
void call_modify_callback( void );
completions_t call_completer( std::string const& input, int& ) const;
hints_t call_hinter( std::string const& input, int&, Replxx::Color& color ) const;
void refresh_line( HINT_ACTION = HINT_ACTION::REGENERATE );
void render( char32_t );
void render( HINT_ACTION );
int handle_hints( HINT_ACTION );
void set_color( Replxx::Color );
int context_length( void );
void clear( void );
void repaint( void );
bool is_word_break_character( char32_t ) const;
void dynamicRefresh(Prompt& pi, char32_t* buf32, int len, int pos);
char const* finalize_input( char const* );
void clear_self_to_end_of_screen( Prompt const* = nullptr );
typedef struct {
int index;
bool error;
} paren_info_t;
paren_info_t matching_paren( void );
};
}
#endif
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