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4coder/4ed_edit.cpp

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/*
* Mr. 4th Dimention - Allen Webster
*
* 25.03.2018
*
* High level edit procedures
*
*/
// TOP
internal void
edit_pre_state_change(Models *models, Heap *heap, Editing_File *file){
System_Functions *system = models->system;
if (file->state.still_lexing){
system->cancel_job(BACKGROUND_THREADS, file->state.lex_job);
if (file->state.swap_array.tokens){
heap_free(heap, file->state.swap_array.tokens);
file->state.swap_array.tokens = 0;
}
file->state.still_lexing = 0;
}
file_add_dirty_flag(file, DirtyState_UnsavedChanges);
file_unmark_edit_finished(&models->working_set, file);
Layout *layout = &models->layout;
for (Panel *panel = layout_get_first_open_panel(layout);
panel != 0;
panel = layout_get_next_open_panel(layout, panel)){
View *view = panel->view;
if (view->file == file){
Full_Cursor render_cursor = view_get_render_cursor(models, view);
Full_Cursor target_cursor = view_get_render_cursor_target(models, view);
view->temp_view_top_left_pos = (i32)render_cursor.pos;
view->temp_view_top_left_target_pos = (i32)target_cursor.pos;
}
}
}
internal void
edit_fix_markers__write_workspace_markers(Dynamic_Workspace *workspace, Buffer_ID buffer_id,
Cursor_With_Index *cursors, Cursor_With_Index *r_cursors, i32 *cursor_count, i32 *r_cursor_count){
for (Managed_Buffer_Markers_Header *node = workspace->buffer_markers_list.first;
node != 0;
node = node->next){
if (node->buffer_id != buffer_id) continue;
Marker *markers = (Marker*)(node + 1);
Assert(sizeof(*markers) == node->std_header.item_size);
i32 count = node->std_header.count;
for (i32 i = 0; i < count; i += 1){
if (markers[i].lean_right){
write_cursor_with_index(r_cursors, r_cursor_count, markers[i].pos);
}
else{
write_cursor_with_index(cursors , cursor_count , markers[i].pos);
}
}
}
}
internal void
edit_fix_markers__read_workspace_markers(Dynamic_Workspace *workspace, Buffer_ID buffer_id,
Cursor_With_Index *cursors, Cursor_With_Index *r_cursors, i32 *cursor_count, i32 *r_cursor_count){
for (Managed_Buffer_Markers_Header *node = workspace->buffer_markers_list.first;
node != 0;
node = node->next){
if (node->buffer_id != buffer_id) continue;
Marker *markers = (Marker*)(node + 1);
Assert(sizeof(*markers) == node->std_header.item_size);
i32 count = node->std_header.count;
for (i32 i = 0; i < count; i += 1){
if (markers[i].lean_right){
markers[i].pos = r_cursors[(*r_cursor_count)++].pos;
}
else{
markers[i].pos = cursors[(*cursor_count)++].pos;
}
}
}
}
internal f32
edit_fix_markers__compute_scroll_y(i32 line_height, f32 old_y_val, f32 new_y_val_aligned){
f32 y_offset = mod_f32(old_y_val, line_height);
f32 y_position = new_y_val_aligned + y_offset;
return(y_position);
}
internal i32
edit_fix_markers__compute_scroll_y(i32 line_height, i32 old_y_val, f32 new_y_val_aligned){
return((i32)edit_fix_markers__compute_scroll_y(line_height, (f32)old_y_val, new_y_val_aligned));
}
internal void
edit_fix_markers(System_Functions *system, Models *models, Editing_File *file, Edit edit){
Layout *layout = &models->layout;
Lifetime_Object *file_lifetime_object = file->lifetime_object;
Buffer_ID file_id = file->id.id;
Assert(file_lifetime_object != 0);
i32 cursor_max = layout_get_open_panel_count(layout)*4;
i32 total_marker_count = 0;
{
total_marker_count += file_lifetime_object->workspace.total_marker_count;
i32 key_count = file_lifetime_object->key_count;
i32 key_index = 0;
for (Lifetime_Key_Ref_Node *key_node = file_lifetime_object->key_node_first;
key_node != 0;
key_node = key_node->next){
i32 count = clamp_top(lifetime_key_reference_per_node, key_count - key_index);
for (i32 i = 0; i < count; i += 1){
Lifetime_Key *key = key_node->keys[i];
total_marker_count += key->dynamic_workspace.total_marker_count;
}
key_index += count;
}
}
cursor_max += total_marker_count;
Arena *scratch = &models->mem.arena;
Temp_Memory cursor_temp = begin_temp(scratch);
Cursor_With_Index *cursors = push_array(scratch, Cursor_With_Index, cursor_max);
Cursor_With_Index *r_cursors = push_array(scratch, Cursor_With_Index, cursor_max);
i32 cursor_count = 0;
i32 r_cursor_count = 0;
Assert(cursors != 0);
Assert(r_cursors != 0);
for (Panel *panel = layout_get_first_open_panel(layout);
panel != 0;
panel = layout_get_next_open_panel(layout, panel)){
View *view = panel->view;
if (view->file == file){
File_Edit_Positions edit_pos = view_get_edit_pos(view);
write_cursor_with_index(cursors, &cursor_count, (i32)edit_pos.cursor_pos);
write_cursor_with_index(cursors, &cursor_count, (i32)view->mark);
write_cursor_with_index(cursors, &cursor_count, view->temp_view_top_left_pos);
write_cursor_with_index(cursors, &cursor_count, view->temp_view_top_left_target_pos);
}
}
edit_fix_markers__write_workspace_markers(&file_lifetime_object->workspace, file_id, cursors, r_cursors, &cursor_count, &r_cursor_count);
{
i32 key_count = file_lifetime_object->key_count;
i32 key_index = 0;
for (Lifetime_Key_Ref_Node *key_node = file_lifetime_object->key_node_first;
key_node != 0;
key_node = key_node->next){
i32 count = clamp_top(lifetime_key_reference_per_node, key_count - key_index);
for (i32 i = 0; i < count; i += 1){
Lifetime_Key *key = key_node->keys[i];
edit_fix_markers__write_workspace_markers(&key->dynamic_workspace, file_id, cursors, r_cursors, &cursor_count, &r_cursor_count);
}
key_index += count;
}
}
if (cursor_count > 0 || r_cursor_count > 0){
buffer_sort_cursors( cursors, cursor_count);
buffer_sort_cursors(r_cursors, r_cursor_count);
buffer_update_cursors( cursors, cursor_count, edit.range.first, edit.range.one_past_last, edit.length, false);
buffer_update_cursors(r_cursors, r_cursor_count, edit.range.first, edit.range.one_past_last, edit.length, true);
buffer_unsort_cursors( cursors, cursor_count);
buffer_unsort_cursors(r_cursors, r_cursor_count);
Face *face = font_set_face_from_id(&models->font_set, file->settings.font_id);
Assert(face != 0);
cursor_count = 0;
r_cursor_count = 0;
for (Panel *panel = layout_get_first_open_panel(layout);
panel != 0;
panel = layout_get_next_open_panel(layout, panel)){
View *view = panel->view;
if (view->file == file){
i32 cursor_pos = cursors[cursor_count++].pos;
Full_Cursor new_cursor = file_compute_cursor(models, file, seek_pos(cursor_pos));
File_Edit_Positions edit_pos = view_get_edit_pos(view);
GUI_Scroll_Vars scroll = edit_pos.scroll;
view->mark = cursors[cursor_count++].pos;
i32 line_height = (i32)face->height;
i32 top_left_pos = cursors[cursor_count++].pos;
i32 top_left_target_pos = cursors[cursor_count++].pos;
f32 new_y_val_aligned = 0;
if (view->temp_view_top_left_pos != top_left_pos){
Full_Cursor new_position_cursor = file_compute_cursor(models, file, seek_pos(top_left_pos));
if (file->settings.unwrapped_lines){
new_y_val_aligned = new_position_cursor.unwrapped_y;
}
else{
new_y_val_aligned = new_position_cursor.wrapped_y;
}
scroll.scroll_y = edit_fix_markers__compute_scroll_y(line_height, scroll.scroll_y, new_y_val_aligned);
}
if (view->temp_view_top_left_target_pos != top_left_target_pos){
if (top_left_target_pos != top_left_pos){
Full_Cursor new_position_cursor = file_compute_cursor(models, file, seek_pos(top_left_target_pos));
if (file->settings.unwrapped_lines){
new_y_val_aligned = new_position_cursor.unwrapped_y;
}
else{
new_y_val_aligned = new_position_cursor.wrapped_y;
}
}
scroll.target_y = edit_fix_markers__compute_scroll_y(line_height, scroll.target_y, new_y_val_aligned);
}
view_set_cursor_and_scroll(models, view, new_cursor, true, scroll);
}
}
edit_fix_markers__read_workspace_markers(&file_lifetime_object->workspace, file_id, cursors, r_cursors, &cursor_count, &r_cursor_count);
i32 key_count = file_lifetime_object->key_count;
i32 key_index = 0;
for (Lifetime_Key_Ref_Node *key_node = file_lifetime_object->key_node_first;
key_node != 0;
key_node = key_node->next){
i32 count = clamp_top(lifetime_key_reference_per_node, key_count - key_index);
for (i32 i = 0; i < count; i += 1){
Lifetime_Key *key = key_node->keys[i];
edit_fix_markers__read_workspace_markers(&key->dynamic_workspace, file_id, cursors, r_cursors, &cursor_count, &r_cursor_count);
}
key_index += count;
}
}
end_temp(cursor_temp);
}
internal void
edit_single(System_Functions *system, Models *models, Editing_File *file, Range range, String_Const_u8 string, Edit_Behaviors behaviors){
Edit edit = {};
edit.str = (char*)string.str;
edit.length = (i32)string.size;
edit.range = range;
Gap_Buffer *buffer = &file->state.buffer;
Assert(0 <= edit.range.first);
Assert(edit.range.first <= edit.range.one_past_last);
Assert(edit.range.one_past_last <= buffer_size(buffer));
Heap *heap = &models->mem.heap;
// NOTE(allen): history update
if (!behaviors.do_not_post_to_history){
// TODO(allen): if the edit number counter is not updated, maybe auto-merge edits? Wouldn't that just work?
history_dump_records_after_index(&file->state.history, file->state.current_record_index);
history_record_edit(heap, &models->global_history, &file->state.history, buffer, edit);
file->state.current_record_index = history_get_record_count(&file->state.history);
}
// NOTE(allen): fixing stuff beforewards????
edit_pre_state_change(models, heap, file);
// NOTE(allen): edit range hook
if (models->hook_file_edit_range != 0){
models->hook_file_edit_range(&models->app_links, file->id.id, edit.range, SCu8(edit.str, edit.length));
}
// NOTE(allen): expand spec, compute shift
i32 shift_amount = buffer_replace_range_compute_shift(edit.range.first, edit.range.one_past_last, edit.length);
// NOTE(allen): actual text replacement
i32 request_amount = 0;
for (;buffer_replace_range(buffer, edit.range.first, edit.range.one_past_last, edit.str, edit.length, shift_amount, &request_amount);){
void *new_data = 0;
if (request_amount > 0){
new_data = heap_allocate(heap, request_amount);
}
void *old_data = buffer_edit_provide_memory(buffer, new_data, request_amount);
if (old_data != 0){
heap_free(heap, old_data);
}
}
// NOTE(allen): line meta data
i32 line_start = buffer_get_line_number(buffer, edit.range.first);
i32 line_end = buffer_get_line_number(buffer, edit.range.one_past_last);
i32 replaced_line_count = line_end - line_start;
i32 new_line_count = buffer_count_newlines(buffer, edit.range.first, edit.range.first + edit.length);
i32 line_shift = new_line_count - replaced_line_count;
file_grow_starts_as_needed(heap, buffer, line_shift);
buffer_remeasure_starts(buffer, line_start, line_end, line_shift, shift_amount);
file_allocate_character_starts_as_needed(heap, file);
buffer_remeasure_character_starts(system, buffer, line_start, line_end, line_shift, file->state.character_starts, 0, file->settings.virtual_white);
// NOTE(allen): token fixing
if (file->settings.tokens_exist){
file_relex(system, models, file, edit.range.first, edit.range.one_past_last, shift_amount);
}
// NOTE(allen): wrap meta data
Face *face = font_set_face_from_id(&models->font_set, file->settings.font_id);
Assert(face != 0);
file_measure_wraps(system, &models->mem, file, face);
// NOTE(allen): cursor fixing
edit_fix_markers(system, models, file, edit);
// NOTE(allen): mark edit finished
if (file->settings.tokens_exist){
if (file->settings.virtual_white){
file_mark_edit_finished(&models->working_set, file);
}
}
else{
file_mark_edit_finished(&models->working_set, file);
}
}
internal void
file_end_file(Models *models, Editing_File *file){
if (models->hook_end_file != 0){
models->hook_end_file(&models->app_links, file->id.id);
}
Heap *heap = &models->mem.heap;
Lifetime_Allocator *lifetime_allocator = &models->lifetime_allocator;
lifetime_free_object(heap, lifetime_allocator, file->lifetime_object);
file->lifetime_object = lifetime_alloc_object(heap, lifetime_allocator, DynamicWorkspace_Buffer, file);
}
internal void
edit__apply_record_forward(System_Functions *system, Models *models, Editing_File *file, Record *record, Edit_Behaviors behaviors_prototype){
// NOTE(allen): // NOTE(allen): // NOTE(allen): // NOTE(allen): // NOTE(allen):
// Whenever you change this also change the backward version!
switch (record->kind){
case RecordKind_Single:
{
String_Const_u8 str = SCu8(record->single.str_forward, record->single.length_forward);
Range range = make_range(record->single.first, record->single.first + record->single.length_backward);
edit_single(system, models, file, range, str, behaviors_prototype);
}break;
case RecordKind_Group:
{
Node *sentinel = &record->group.children;
for (Node *node = sentinel->next;
node != sentinel;
node = node->next){
Record *sub_record = CastFromMember(Record, node, node);
edit__apply_record_forward(system, models, file, sub_record, behaviors_prototype);
}
}break;
default:
{
InvalidPath;
}break;
}
}
internal void
edit__apply_record_backward(System_Functions *system, Models *models, Editing_File *file, Record *record, Edit_Behaviors behaviors_prototype){
// NOTE(allen): // NOTE(allen): // NOTE(allen): // NOTE(allen): // NOTE(allen):
// Whenever you change this also change the forward version!
switch (record->kind){
case RecordKind_Single:
{
String_Const_u8 str = SCu8(record->single.str_backward, record->single.length_backward);
Range range = make_range(record->single.first, record->single.first + record->single.length_forward);
edit_single(system, models, file, range, str, behaviors_prototype);
}break;
case RecordKind_Group:
{
Node *sentinel = &record->group.children;
for (Node *node = sentinel->prev;
node != sentinel;
node = node->prev){
Record *sub_record = CastFromMember(Record, node, node);
edit__apply_record_backward(system, models, file, sub_record, behaviors_prototype);
}
}break;
default:
{
InvalidPath;
}break;
}
}
internal void
edit_change_current_history_state(System_Functions *system, Models *models, Editing_File *file, i32 target_index){
History *history = &file->state.history;
if (history->activated && file->state.current_record_index != target_index){
Assert(0 <= target_index && target_index <= history->record_count);
i32 current = file->state.current_record_index;
Record *record = history_get_record(history, current);
Assert(record != 0);
Record *dummy_record = history_get_dummy_record(history);
Edit_Behaviors behaviors_prototype = {};
behaviors_prototype.do_not_post_to_history = true;
if (current < target_index){
do{
current += 1;
record = CastFromMember(Record, node, record->node.next);
Assert(record != dummy_record);
edit__apply_record_forward(system, models, file, record, behaviors_prototype);
} while (current != target_index);
}
else{
do{
Assert(record != dummy_record);
edit__apply_record_backward(system, models, file, record, behaviors_prototype);
current -= 1;
record = CastFromMember(Record, node, record->node.prev);
} while (current != target_index);
}
file->state.current_record_index = current;
}
}
internal b32
edit_merge_history_range(Models *models, Editing_File *file, History_Record_Index first_index, History_Record_Index last_index, Record_Merge_Flag flags){
b32 result = false;
History *history = &file->state.history;
if (history_is_activated(history)){
i32 max_index = history_get_record_count(history);
first_index = clamp_bot(1, first_index);
if (first_index <= last_index && last_index <= max_index){
if (first_index < last_index){
i32 current_index = file->state.current_record_index;
if (first_index <= current_index && current_index < last_index){
System_Functions *system = models->system;
u32 in_range_handler = (flags & bitmask_2);
switch (in_range_handler){
case RecordMergeFlag_StateInRange_MoveStateForward:
{
edit_change_current_history_state(system, models, file, last_index);
current_index = last_index;
}break;
case RecordMergeFlag_StateInRange_MoveStateBackward:
{
edit_change_current_history_state(system, models, file, first_index);
current_index = first_index;
}break;
case RecordMergeFlag_StateInRange_ErrorOut:
{
goto done;
}break;
}
}
history_merge_records(&models->mem.arena, &models->mem.heap, history, first_index, last_index);
if (current_index >= last_index){
current_index -= (last_index - first_index);
}
file->state.current_record_index = current_index;
}
result = true;
}
}
done:;
return(result);
}
internal b32
edit_batch(System_Functions *system, Models *models, Editing_File *file, char *str, Buffer_Edit *edits, i32 edit_count, Edit_Behaviors behaviors){
b32 result = true;
if (edit_count > 0){
History_Record_Index start_index = 0;
if (history_is_activated(&file->state.history)){
start_index = file->state.current_record_index;
}
Buffer_Edit *edit_in = edits;
Buffer_Edit *one_past_last = edits + edit_count;
i32 shift = 0;
for (;edit_in < one_past_last; edit_in += 1){
String_Const_u8 insert_string = SCu8(str + edit_in->str_start, edit_in->len);
Range edit_range = make_range(edit_in->start, edit_in->end);
edit_range.first += shift;
edit_range.one_past_last += shift;
i32 size = buffer_size(&file->state.buffer);
if (0 <= edit_range.first && edit_range.first <= edit_range.one_past_last && edit_range.one_past_last <= size){
edit_single(system, models, file, edit_range, insert_string, behaviors);
shift += replace_range_compute_shift(edit_range, (i32)insert_string.size);
}
else{
result = false;
break;
}
}
if (history_is_activated(&file->state.history)){
History_Record_Index last_index = file->state.current_record_index;
if (start_index + 1 < last_index){
edit_merge_history_range(models, file, start_index + 1, last_index, RecordMergeFlag_StateInRange_ErrorOut);
}
}
}
return(result);
}
////////////////////////////////
internal Editing_File*
create_file(Models *models, String_Const_u8 file_name, Buffer_Create_Flag flags){
Editing_File *result = 0;
if (file_name.size > 0){
System_Functions *system = models->system;
Working_Set *working_set = &models->working_set;
Heap *heap = &models->mem.heap;
Arena *scratch = &models->mem.arena;
Temp_Memory temp = begin_temp(scratch);
Editing_File *file = 0;
b32 do_empty_buffer = false;
Editing_File_Name canon = {};
b32 has_canon_name = false;
b32 buffer_is_for_new_file = false;
// NOTE(allen): Try to get the file by canon name.
if (HasFlag(flags, BufferCreate_NeverAttachToFile) == 0){
if (get_canon_name(system, scratch, file_name, &canon)){
has_canon_name = true;
file = working_set_contains_canon(working_set, string_from_file_name(&canon));
}
else{
do_empty_buffer = true;
}
}
// NOTE(allen): Try to get the file by buffer name.
if ((flags & BufferCreate_MustAttachToFile) == 0){
if (file == 0){
file = working_set_contains_name(working_set, file_name);
}
}
// NOTE(allen): If there is still no file, create a new buffer.
if (file == 0){
Plat_Handle handle = {};
// NOTE(allen): Figure out whether this is a new file, or an existing file.
if (!do_empty_buffer){
if ((flags & BufferCreate_AlwaysNew) != 0){
do_empty_buffer = true;
}
else{
if (!system->load_handle((char*)canon.name_space, &handle)){
do_empty_buffer = true;
}
}
}
if (do_empty_buffer){
if (has_canon_name){
buffer_is_for_new_file = true;
}
if (!HasFlag(flags, BufferCreate_NeverNew)){
file = working_set_alloc_always(working_set, heap, &models->lifetime_allocator);
if (file != 0){
if (has_canon_name){
file_bind_file_name(system, heap, working_set, file, string_from_file_name(&canon));
}
String_Const_u8 front = string_front_of_path(file_name);
buffer_bind_name(models, heap, scratch, working_set, file, front);
File_Attributes attributes = {};
file_create_from_string(system, models, file, SCu8(""), attributes);
result = file;
}
}
}
else{
File_Attributes attributes = system->load_attributes(handle);
b32 in_heap_mem = false;
char *buffer = push_array(scratch, char, (i32)attributes.size);
if (buffer == 0){
buffer = heap_array(heap, char, (i32)attributes.size);
Assert(buffer != 0);
in_heap_mem = true;
}
if (system->load_file(handle, buffer, (i32)attributes.size)){
system->load_close(handle);
file = working_set_alloc_always(working_set, heap, &models->lifetime_allocator);
if (file != 0){
file_bind_file_name(system, heap, working_set, file, string_from_file_name(&canon));
String_Const_u8 front = string_front_of_path(file_name);
buffer_bind_name(models, heap, scratch, working_set, file, front);
file_create_from_string(system, models, file, SCu8(buffer, (i32)attributes.size), attributes);
result = file;
}
}
else{
system->load_close(handle);
}
if (in_heap_mem){
heap_free(heap, buffer);
}
}
}
else{
result = file;
}
if (file != 0 && HasFlag(flags, BufferCreate_JustChangedFile)){
file->state.ignore_behind_os = 1;
}
if (file != 0 && HasFlag(flags, BufferCreate_AlwaysNew)){
i32 size = buffer_size(&file->state.buffer);
if (size > 0){
Edit_Behaviors behaviors = {};
edit_single(system, models, file, make_range(0, size), string_u8_litexpr(""), behaviors);
if (has_canon_name){
buffer_is_for_new_file = true;
}
}
}
if (file != 0 && buffer_is_for_new_file && !HasFlag(flags, BufferCreate_SuppressNewFileHook) && models->hook_new_file != 0){
models->hook_new_file(&models->app_links, file->id.id);
}
end_temp(temp);
}
return(result);
}
// BOTTOM
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