4coder/power/4coder_experiments.cpp

365 lines
10 KiB
C++

// TOP
#define NO_BINDING
#include "../4coder_default_bindings.cpp"
CUSTOM_COMMAND_SIG(kill_rect){
View_Summary view = app->get_active_view(app);
Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
Full_Cursor cursor;
Buffer_Rect rect = get_rect(&view);
for (int line = rect.line1; line >= rect.line0; --line){
int start = 0;
int end = 0;
cursor = app->view_compute_cursor(app, &view, seek_line_char(line, rect.char0));
start = cursor.pos;
cursor = app->view_compute_cursor(app, &view, seek_line_char(line, rect.char1));
end = cursor.pos;
app->buffer_replace_range(app, &buffer, start, end, 0, 0);
}
}
// NOTE(allen): This stream stuff will be moved to helper if it looks
// like it will be helpful. So if you want to use it to build your own
// commands I suggest you move it there first.
struct Stream_Chunk{
Application_Links *app;
Buffer_Summary *buffer;
char *base_data;
int start, end;
int data_size;
char *data;
};
int
round_down(int x, int b){
int r = 0;
if (x >= 0){
r = x - (x % b);
}
return(r);
}
int
round_up(int x, int b){
int r = 0;
if (x >= 0){
r = x - (x % b) + b;
}
return(r);
}
int
init_stream_chunk(Stream_Chunk *chunk,
Application_Links *app, Buffer_Summary *buffer,
int pos, char *data, int size){
int result = 0;
app->refresh_buffer(app, buffer);
if (pos >= 0 && pos < buffer->size && size > 0){
result = 1;
chunk->app = app;
chunk->buffer = buffer;
chunk->base_data = data;
chunk->data_size = size;
chunk->start = round_down(pos, size);
chunk->end = round_up(pos, size);
if (chunk->end > buffer->size){
chunk->end = buffer->size;
}
app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
}
return(result);
}
int
forward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_Summary *buffer = chunk->buffer;
int result = 0;
app->refresh_buffer(app, buffer);
if (chunk->end < buffer->size){
result = 1;
chunk->start = chunk->end;
chunk->end += chunk->data_size;
if (chunk->end > buffer->size){
chunk->end = buffer->size;
}
app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
}
return(result);
}
int
backward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_Summary *buffer = chunk->buffer;
int result = 0;
app->refresh_buffer(app, buffer);
if (chunk->start > 0){
result = 1;
chunk->end = chunk->start;
chunk->start -= chunk->data_size;
if (chunk->start < 0){
chunk->start = 0;
}
app->buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
}
return(result);
}
// TODO(allen): Both of these brace related commands would work better
// if the API exposed access to the tokens in a code file.
CUSTOM_COMMAND_SIG(mark_matching_brace){
View_Summary view = app->get_active_view(app);
Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
int start_pos = view.cursor.pos;
// NOTE(allen): The user provides the memory that the chunk uses,
// this chunk will then be filled at each step of the text stream loop.
// This way you can look for something that should be nearby without
// having to copy the whole file in at once.
Stream_Chunk chunk;
char chunk_space[(1 << 10)];
int result = 0;
int found_result = 0;
int i = start_pos;
int still_looping = 1;
int nesting_counter = 0;
char at_cursor = 0;
if (init_stream_chunk(&chunk, app, &buffer, i, chunk_space, sizeof(chunk_space))){
// NOTE(allen): This is important! The data array is a pointer that is adjusted
// so that indexing it with "i" will put it with the chunk that is actually loaded.
// If i goes below chunk.start or above chunk.end _that_ is an invalid access.
at_cursor = chunk.data[i];
if (at_cursor == '{'){
do{
for (++i; i < chunk.end; ++i){
at_cursor = chunk.data[i];
if (at_cursor == '{'){
++nesting_counter;
}
else if (at_cursor == '}'){
if (nesting_counter == 0){
found_result = 1;
result = i;
goto finished;
}
else{
--nesting_counter;
}
}
}
still_looping = forward_stream_chunk(&chunk);
}
while (still_looping);
}
else if (at_cursor == '}'){
do{
for (--i; i >= chunk.start; --i){
at_cursor = chunk.data[i];
if (at_cursor == '}'){
++nesting_counter;
}
else if (at_cursor == '{'){
if (nesting_counter == 0){
found_result = 1;
result = i;
goto finished;
}
else{
--nesting_counter;
}
}
}
still_looping = backward_stream_chunk(&chunk);
}
while (still_looping);
}
}
finished:
if (found_result){
app->view_set_mark(app, &view, seek_pos(result));
}
}
CUSTOM_COMMAND_SIG(cursor_to_surrounding_scope){
View_Summary view = app->get_active_view(app);
Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
int start_pos = view.cursor.pos - 1;
Stream_Chunk chunk;
char chunk_space[(1 << 10)];
int result = 0;
int found_result = 0;
int i = start_pos;
int still_looping = 1;
int nesting_counter = 0;
char at_cursor = 0;
if (init_stream_chunk(&chunk, app, &buffer, i, chunk_space, sizeof(chunk_space))){
do{
for (; i >= chunk.start; --i){
at_cursor = chunk.data[i];
if (at_cursor == '}'){
++nesting_counter;
}
else if (at_cursor == '{'){
if (nesting_counter == 0){
found_result = 1;
result = i;
goto finished;
}
else{
--nesting_counter;
}
}
}
still_looping = backward_stream_chunk(&chunk);
} while(still_looping);
}
finished:
if (found_result){
app->view_set_cursor(app, &view, seek_pos(result), 0);
}
}
// NOTE(allen): Incomplete
#if 0
CUSTOM_COMMAND_SIG(complete_word){
app->print_message(app, literal("complete_word\n"));
View_Summary view = app->get_active_view(app);
Buffer_Summary buffer = app->get_buffer(app, view.buffer_id);
int start = 0;
int end = 0;
end = view.cursor.pos;
push_parameter(app, par_flags, BoundryAlphanumeric);
exec_command(app, cmdid_seek_left);
app->refresh_view(app, &view);
start = view.cursor.pos;
String complete_string;
int size = (end - start);
char complete_space[256];
if (size < sizeof(complete_space) - 1){
complete_string = make_fixed_width_string(complete_space);
app->buffer_read_range(app, &buffer, start, end, complete_space);
complete_string.size = size;
complete_string.str[size] = 0;
// TODO(allen): Complete this when the heavy duty coroutine stuff
// and the hash table are available.
app->print_message(app, complete_string.str, complete_string.size);
}
}
#endif
// TODO(allen): Query theme settings
#if 0
CUSTOM_COMMAND_SIG(save_theme_settings){
FILE *file = fopen(".4coder_settings", "rb");
char theme_name[128];
char font_name[128];
fscanf(file, "%*128s %*128s", theme_name, font_name);
if (file){
replace_char(theme_name, '#', ' ');
replace_char(font_name, '#', ' ');
fclose(file);
app->change_theme(app, theme_name, strlen(theme_name));
app->change_font(app, font_name, strlen(font_name));
}
}
#endif
void experiment_extension(Bind_Helper *context){
bind(context, 'k', MDFR_ALT, kill_rect);
bind(context, '/', MDFR_ALT, mark_matching_brace);
bind(context, '\'', MDFR_ALT, cursor_to_surrounding_scope);
}
#include <stdio.h>
#define SETTINGS_FILE ".4coder_settings"
HOOK_SIG(experimental_start_hook){
my_start(app);
char theme_name[128];
char font_name[128];
FILE *file = fopen(SETTINGS_FILE, "rb");
if (!file){
char module_path[512];
int len;
len = app->get_4ed_path(app, module_path, 448);
memcpy(module_path+len, SETTINGS_FILE, sizeof(SETTINGS_FILE));
file = fopen(module_path, "rb");
}
if (file){
fscanf(file, "%127s\n%127s", theme_name, font_name);
replace_char(theme_name, '#', ' ');
replace_char(font_name, '#', ' ');
fclose(file);
app->change_theme(app, theme_name, (int)strlen(theme_name));
app->change_font(app, font_name, (int)strlen(font_name));
}
return(0);
}
int get_bindings(void *data, int size){
Bind_Helper context_ = begin_bind_helper(data, size);
Bind_Helper *context = &context_;
set_hook(context, hook_start, experimental_start_hook);
set_hook(context, hook_open_file, my_file_settings);
set_scroll_rule(context, smooth_scroll_rule);
default_keys(context, experiment_extension);
int result = end_bind_helper(context);
return(result);
}
// BOTTOM