4coder/4coder_helper.cpp

1548 lines
44 KiB
C++

/*
* Miscellaneous helpers for common operations.
*/
// TOP
static Binding_Unit*
write_unit(Bind_Helper *helper, Binding_Unit unit){
Binding_Unit *p = 0;
helper->write_total += sizeof(*p);
if (helper->error == 0 && helper->cursor != helper->end){
p = helper->cursor++;
*p = unit;
}
return p;
}
static Bind_Helper
begin_bind_helper(void *data, int32_t size){
Bind_Helper result = {};
result.cursor = (Binding_Unit*)data;
result.start = result.cursor;
result.end = result.start + size / sizeof(*result.cursor);
Binding_Unit unit = {};
unit.type = unit_header;
unit.header.total_size = sizeof(*result.header);
result.header = write_unit(&result, unit);
result.header->header.user_map_count = 0;
return(result);
}
static void
begin_map(Bind_Helper *helper, int32_t mapid, bool32 replace){
if (helper->group != 0 && helper->error == 0){
helper->error = BH_ERR_MISSING_END;
}
if (!helper->error && mapid < mapid_global){
++helper->header->header.user_map_count;
}
Binding_Unit unit;
unit.type = unit_map_begin;
unit.map_begin.mapid = mapid;
unit.map_begin.replace = replace;
helper->group = write_unit(helper, unit);
helper->group->map_begin.bind_count = 0;
}
static void
begin_map(Bind_Helper *helper, int32_t mapid){
begin_map(helper, mapid, false);
}
static void
restart_map(Bind_Helper *helper, int32_t mapid){
begin_map(helper, mapid, true);
}
static void
end_map(Bind_Helper *helper){
if (helper->group == 0 && helper->error == 0){
helper->error = BH_ERR_MISSING_BEGIN;
}
helper->group = 0;
}
static void
bind(Bind_Helper *helper, Key_Code code, uint8_t modifiers, Command_ID cmdid){
if (helper->group == 0 && helper->error == 0){
helper->error = BH_ERR_MISSING_BEGIN;
}
if (!helper->error){
++helper->group->map_begin.bind_count;
}
Binding_Unit unit;
unit.type = unit_binding;
unit.binding.command_id = cmdid;
unit.binding.code = code;
unit.binding.modifiers = modifiers;
write_unit(helper, unit);
}
static void
bind(Bind_Helper *helper, Key_Code code, uint8_t modifiers, Custom_Command_Function *func){
if (helper->group == 0 && helper->error == 0){
helper->error = BH_ERR_MISSING_BEGIN;
}
if (!helper->error){
++helper->group->map_begin.bind_count;
}
Binding_Unit unit;
unit.type = unit_callback;
unit.callback.func = func;
unit.callback.code = code;
unit.callback.modifiers = modifiers;
write_unit(helper, unit);
}
static void
bind(Bind_Helper *helper, Key_Code code, uint8_t modifiers, Generic_Command cmd){
if (cmd.cmdid < cmdid_count){
bind(helper, code, modifiers, cmd.cmdid);
}
else{
bind(helper, code, modifiers, cmd.command);
}
}
static void
bind_vanilla_keys(Bind_Helper *helper, int32_t cmdid){
bind(helper, 0, 0, cmdid);
}
static void
bind_vanilla_keys(Bind_Helper *helper, Custom_Command_Function *func){
bind(helper, 0, 0, func);
}
static void
bind_vanilla_keys(Bind_Helper *helper, unsigned char modifiers, int32_t cmdid){
bind(helper, 0, modifiers, cmdid);
}
static void
bind_vanilla_keys(Bind_Helper *helper, unsigned char modifiers, Custom_Command_Function *func){
bind(helper, 0, modifiers, func);
}
static void
inherit_map(Bind_Helper *helper, int32_t mapid){
if (helper->group == 0 && helper->error == 0) helper->error = BH_ERR_MISSING_BEGIN;
if (!helper->error && mapid < mapid_global) ++helper->header->header.user_map_count;
Binding_Unit unit = {};
unit.type = unit_inherit;
unit.map_inherit.mapid = mapid;
write_unit(helper, unit);
}
static void
set_hook(Bind_Helper *helper, int32_t hook_id, Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = hook_id;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_scroll_rule(Bind_Helper *helper, Scroll_Rule_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_scroll_rule;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_buffer_name_resolver(Bind_Helper *helper, Buffer_Name_Resolver_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_buffer_name_resolver;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_new_file_hook(Bind_Helper *helper, Open_File_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_new_file;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_start_hook(Bind_Helper *helper, Start_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_start;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_open_file_hook(Bind_Helper *helper, Open_File_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_open_file;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_save_file_hook(Bind_Helper *helper, Open_File_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_save_file;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_end_file_hook(Bind_Helper *helper, Open_File_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_end_file;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_file_edit_finished_hook(Bind_Helper *helper, File_Edit_Finished_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_file_edit_finished;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_command_caller(Bind_Helper *helper, Command_Caller_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_command_caller;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_render_caller(Bind_Helper *helper, Render_Caller_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_render_caller;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_input_filter(Bind_Helper *helper, Input_Filter_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_input_filter;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static int32_t
end_bind_helper(Bind_Helper *helper){
if (helper->header){
helper->header->header.total_size = (int32_t)(helper->cursor - helper->start);
helper->header->header.error = helper->error;
}
int32_t result = helper->write_total;
return(result);
}
static Bind_Buffer
end_bind_helper_get_buffer(Bind_Helper *helper){
int32_t size = end_bind_helper(helper);
Bind_Buffer result = {};
result.data = helper->start;
result.size = size;
return(result);
}
static u32_4tech
get_key_code(char *buffer){
u32_4tech ignore;
u32_4tech result = utf8_to_u32_length_unchecked((u8_4tech*)buffer, &ignore);
return(result);
}
////////////////////////////////
static int32_t
round_down(int32_t x, int32_t b){
int32_t r = 0;
if (x >= 0){
r = x - (x % b);
}
return(r);
}
static int32_t
round_up(int32_t x, int32_t b){
int32_t r = 0;
if (x >= 0){
r = x + b - (x % b);
}
return(r);
}
static void
exec_command(Application_Links *app, Custom_Command_Function *func){
func(app);
}
static void
exec_command(Application_Links *app, Generic_Command cmd){
if (cmd.cmdid < cmdid_count){
exec_command(app, cmd.cmdid);
}
else{
exec_command(app, cmd.command);
}
}
static int32_t
key_is_unmodified(Key_Event_Data *key){
int8_t *mods = key->modifiers;
int32_t unmodified = (!mods[MDFR_CONTROL_INDEX] && !mods[MDFR_ALT_INDEX]);
return(unmodified);
}
static uint32_t
to_writable_character(User_Input in, uint8_t *character){
uint32_t result = 0;
if (in.key.character != 0){
u32_to_utf8_unchecked(in.key.character, character, &result);
}
return(result);
}
static uint32_t
to_writable_character(Key_Event_Data key, uint8_t *character){
uint32_t result = 0;
if (key.character != 0){
u32_to_utf8_unchecked(key.character, character, &result);
}
return(result);
}
static bool32
backspace_utf8(String *str){
bool32 result = false;
uint8_t *s = (uint8_t*)str->str;
if (str->size > 0){
uint32_t i = str->size-1;
for (; i > 0; --i){
if (s[i] <= 0x7F || s[i] >= 0xC0){
break;
}
}
str->size = i;
result = true;
}
return(result);
}
static bool32
query_user_general(Application_Links *app, Query_Bar *bar, bool32 force_number){
// NOTE(allen|a3.4.4): It will not cause an *error* if we continue on after failing to.
// start a query bar, but it will be unusual behavior from the point of view of the
// user, if this command starts intercepting input even though no prompt is shown.
// This will only happen if you have a lot of bars open already or if the current view
// doesn't support query bars.
if (start_query_bar(app, bar, 0) == 0){
return(false);
}
bool32 success = true;
for (;;){
// NOTE(allen|a3.4.4): This call will block until the user does one of the input
// types specified in the flags. The first set of flags are inputs you'd like to intercept
// that you don't want to abort on. The second set are inputs that you'd like to cause
// the command to abort. If an event satisfies both flags, it is treated as an abort.
User_Input in = get_user_input(app, EventOnAnyKey, EventOnEsc|EventOnMouseLeftButton|EventOnMouseRightButton);
// NOTE(allen|a3.4.4): The responsible thing to do on abort is to end the command
// without waiting on get_user_input again.
if (in.abort){
success = false;
break;
}
uint8_t character[4];
uint32_t length = 0;
bool32 good_character = false;
if (key_is_unmodified(&in.key)){
if (force_number){
if (in.key.character >= '0' && in.key.character <= '9'){
good_character = true;
length = to_writable_character(in, character);
}
}
else{
length = to_writable_character(in, character);
if (length != 0){
good_character = true;
}
}
}
// NOTE(allen|a3.4.4): All we have to do to update the query bar is edit our
// local Query_Bar struct! This is handy because it means our Query_Bar
// is always correct for typical use without extra work updating the bar.
if (in.key.keycode == '\n' || in.key.keycode == '\t'){
break;
}
else if (in.key.keycode == key_back){
backspace_utf8(&bar->string);
}
else if (good_character){
append(&bar->string, make_string(character, length));
}
}
terminate_with_null(&bar->string);
return(success);
}
static bool32
query_user_string(Application_Links *app, Query_Bar *bar){
return(query_user_general(app, bar, false));
}
static bool32
query_user_number(Application_Links *app, Query_Bar *bar){
return(query_user_general(app, bar, true));
}
static char
buffer_get_char(Application_Links *app, Buffer_Summary *buffer, int32_t pos){
char result = ' ';
*buffer = get_buffer(app, buffer->buffer_id, AccessAll);
if (pos < buffer->size){
buffer_read_range(app, buffer, pos, pos + 1, &result);
}
return(result);
}
static Buffer_Identifier
buffer_identifier(char *str, int32_t len){
Buffer_Identifier identifier;
identifier.name = str;
identifier.name_len = len;
identifier.id = 0;
return(identifier);
}
static Buffer_Identifier
buffer_identifier(Buffer_ID id){
Buffer_Identifier identifier;
identifier.name = 0;
identifier.name_len = 0;
identifier.id = id;
return(identifier);
}
static Range
make_range(int32_t p1, int32_t p2){
Range range;
if (p1 < p2){
range.min = p1;
range.max = p2;
}
else{
range.min = p2;
range.max = p1;
}
return(range);
}
static void
adjust_all_buffer_wrap_widths(Application_Links *app, int32_t wrap_width, int32_t min_base_width){
for (Buffer_Summary buffer = get_buffer_first(app, AccessAll);
buffer.exists;
get_buffer_next(app, &buffer, AccessAll)){
buffer_set_setting(app, &buffer, BufferSetting_WrapPosition, wrap_width);
buffer_set_setting(app, &buffer, BufferSetting_MinimumBaseWrapPosition, min_base_width);
}
}
static Buffer_Rect
get_rect(View_Summary *view){
Buffer_Rect rect = {};
rect.char0 = view->mark.character;
rect.line0 = view->mark.line;
rect.char1 = view->cursor.character;
rect.line1 = view->cursor.line;
if (rect.line0 > rect.line1){
Swap(int32_t, rect.line0, rect.line1);
}
if (rect.char0 > rect.char1){
Swap(int32_t, rect.char0, rect.char1);
}
return(rect);
}
static i32_Rect
get_line_x_rect(View_Summary *view){
i32_Rect rect = {};
if (view->unwrapped_lines){
rect.x0 = (int32_t)view->mark.unwrapped_x;
rect.x1 = (int32_t)view->cursor.unwrapped_x;
}
else{
rect.x0 = (int32_t)view->mark.wrapped_x;
rect.x1 = (int32_t)view->cursor.wrapped_x;
}
rect.y0 = view->mark.line;
rect.y1 = view->cursor.line;
if (rect.y0 > rect.y1){
Swap(int32_t, rect.y0, rect.y1);
}
if (rect.x0 > rect.x1){
Swap(int32_t, rect.x0, rect.x1);
}
return(rect);
}
static View_Summary
get_first_view_with_buffer(Application_Links *app, int32_t buffer_id){
View_Summary result = {};
View_Summary test = {};
if (buffer_id != 0){
uint32_t access = AccessAll;
for(test = get_view_first(app, access);
test.exists;
get_view_next(app, &test, access)){
Buffer_Summary buffer = get_buffer(app, test.buffer_id, access);
if(buffer.buffer_id == buffer_id){
result = test;
break;
}
}
}
return(result);
}
static bool32
open_file(Application_Links *app, Buffer_Summary *buffer_out,
char *filename, int32_t filename_len, bool32 background, bool32 never_new){
bool32 result = false;
Buffer_Summary buffer = get_buffer_by_name(app, filename, filename_len, AccessProtected|AccessHidden);
if (buffer.exists){
if (buffer_out){
*buffer_out = buffer;
}
result = true;
}
else{
Buffer_Create_Flag flags = 0;
if (background){
flags |= BufferCreate_Background;
}
if (never_new){
flags |= BufferCreate_NeverNew;
}
buffer = create_buffer(app, filename, filename_len, flags);
if (buffer.exists){
if (buffer_out != 0){
*buffer_out = buffer;
}
result = true;
}
}
return(result);
}
static Buffer_ID
buffer_identifier_to_id(Application_Links *app, Buffer_Identifier identifier){
Buffer_ID id = 0;
if (identifier.id != 0){
id = identifier.id;
}
else{
Buffer_Summary buffer = get_buffer_by_name(app, identifier.name, identifier.name_len, AccessAll);
id = buffer.buffer_id;
if (id == 0){
buffer = get_buffer_by_file_name(app, identifier.name, identifier.name_len, AccessAll);
id = buffer.buffer_id;
}
}
return(id);
}
static Buffer_Summary
buffer_identifier_to_buffer_summary(Application_Links *app, Buffer_Identifier identifier, Access_Flag access){
Buffer_Summary buffer = {};
if (identifier.id != 0){
buffer = get_buffer(app, identifier.id, access);
}
else{
buffer = get_buffer_by_name(app, identifier.name, identifier.name_len, access);
if (!buffer.exists){
buffer = get_buffer_by_file_name(app, identifier.name, identifier.name_len, access);
}
}
return(buffer);
}
static bool32
view_open_file(Application_Links *app, View_Summary *view,
char *filename, int32_t filename_len, bool32 never_new){
bool32 result = false;
if (view != 0){
Buffer_Summary buffer = {};
if (open_file(app, &buffer, filename, filename_len, false, never_new)){
view_set_buffer(app, view, buffer.buffer_id, 0);
result = true;
}
}
return(result);
}
static void
get_view_prev(Application_Links *app, View_Summary *view, uint32_t access){
if (view->exists){
View_ID original_id = view->view_id;
View_ID check_id = original_id;
View_Summary new_view = {};
for (;;){
--check_id;
if (check_id <= 0){
check_id = 16;
}
if (check_id == original_id){
new_view = *view;
break;
}
new_view = get_view(app, check_id, access);
if (new_view.exists){
break;
}
}
*view = new_view;
}
}
static Buffer_Kill_Result
kill_buffer(Application_Links *app, Buffer_Identifier identifier, View_ID gui_view_id, Buffer_Kill_Flag flags){
Buffer_Kill_Result result = kill_buffer(app, identifier, flags);
if (result == BufferKillResult_Dirty){
Buffer_Summary buffer = buffer_identifier_to_buffer_summary(app, identifier, AccessAll);
View_Summary view = get_view(app, gui_view_id, AccessAll);
do_gui_sure_to_kill(app, &buffer, &view);
}
return(result);
}
static View_Summary
get_view_last(Application_Links *app, uint32_t access){
View_Summary view = {};
view.exists = true;
get_view_prev(app, &view, access);
if (view.view_id < 1 || view.view_id > 16){
memset(&view, 0, sizeof(view));
}
return(view);
}
static void
get_next_view_looped_all_panels(Application_Links *app, View_Summary *view, uint32_t access){
get_view_next(app, view, access);
if (!view->exists){
*view = get_view_first(app, access);
}
}
static void
get_prev_view_looped_all_panels(Application_Links *app, View_Summary *view, uint32_t access){
get_view_prev(app, view, access);
if (!view->exists){
*view = get_view_last(app, access);
}
}
static void
refresh_buffer(Application_Links *app, Buffer_Summary *buffer){
*buffer = get_buffer(app, buffer->buffer_id, AccessAll);
}
static void
refresh_view(Application_Links *app, View_Summary *view){
*view = get_view(app, view->view_id, AccessAll);
}
// TODO(allen): Setup buffer seeking to do character_pos and get View_Summary out of this parameter list.
static int32_t
character_pos_to_pos(Application_Links *app, View_Summary *view, Buffer_Summary *buffer, int32_t character_pos){
int32_t result = 0;
Full_Cursor cursor = {};
if (view_compute_cursor(app, view, seek_character_pos(character_pos), &cursor)){
result = cursor.pos;
}
return(result);
}
static float
get_view_y(View_Summary *view){
float y = view->cursor.wrapped_y;
if (view->unwrapped_lines){
y = view->cursor.unwrapped_y;
}
return(y);
}
static float
get_view_x(View_Summary *view){
float x = view->cursor.wrapped_x;
if (view->unwrapped_lines){
x = view->cursor.unwrapped_x;
}
return(x);
}
static Range
get_view_range(View_Summary *view){
return(make_range(view->cursor.pos, view->mark.pos));
}
static bool32
read_line(Application_Links *app, Partition *part, Buffer_Summary *buffer, int32_t line, String *str){
Partial_Cursor begin = {};
Partial_Cursor end = {};
bool32 success = false;
if (buffer_compute_cursor(app, buffer, seek_line_char(line, 1), &begin)){
if (buffer_compute_cursor(app, buffer, seek_line_char(line, -1), &end)){
if (begin.line == line){
if (0 <= begin.pos && begin.pos <= end.pos && end.pos <= buffer->size){
int32_t size = (end.pos - begin.pos);
int32_t alloc_size = size + 1;
char *memory = push_array(part, char, alloc_size);
if (memory != 0){
*str = make_string(memory, 0, alloc_size);
success = true;
buffer_read_range(app, buffer, begin.pos, end.pos, str->str);
str->size = size;
terminate_with_null(str);
}
}
}
}
}
return(success);
}
static int32_t
buffer_get_line_start(Application_Links *app, Buffer_Summary *buffer, int32_t line){
int32_t result = buffer->size;
if (line <= buffer->line_count){
Partial_Cursor partial_cursor = {};
buffer_compute_cursor(app, buffer, seek_line_char(line, 1), &partial_cursor);
result = partial_cursor.pos;
}
return(result);
}
static int32_t
buffer_get_line_end(Application_Links *app, Buffer_Summary *buffer, int32_t line){
int32_t result = buffer->size;
if (line <= buffer->line_count){
Partial_Cursor partial_cursor = {};
buffer_compute_cursor(app, buffer, seek_line_char(line, -1), &partial_cursor);
result = partial_cursor.pos;
}
return(result);
}
static int32_t
buffer_get_line_number(Application_Links *app, Buffer_Summary *buffer, int32_t pos){
Partial_Cursor partial_cursor = {};
buffer_compute_cursor(app, buffer, seek_pos(pos), &partial_cursor);
return(partial_cursor.line);
}
static Cpp_Token*
get_first_token_at_line(Application_Links *app, Buffer_Summary *buffer, Cpp_Token_Array tokens, int32_t line, int32_t *line_start_out = 0){
int32_t line_start = buffer_get_line_start(app, buffer, line);
Cpp_Get_Token_Result get_token = cpp_get_token(tokens, line_start);
if (get_token.in_whitespace){
get_token.token_index += 1;
}
if (line_start_out){
*line_start_out = line_start;
}
Cpp_Token *result = 0;
if (get_token.token_index < tokens.count){
result = &tokens.tokens[get_token.token_index];
}
return(result);
}
////////////////////////////////
static bool32
init_stream_chunk(Stream_Chunk *chunk, Application_Links *app, Buffer_Summary *buffer,
int32_t pos, char *data, uint32_t size){
bool32 result = false;
refresh_buffer(app, buffer);
if (0 <= pos && pos < buffer->size && size > 0){
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->max_end > buffer->size || chunk->max_end == 0){
chunk->max_end = buffer->size;
}
if (chunk->max_end && chunk->max_end < chunk->end){
chunk->end = chunk->max_end;
}
if (chunk->min_start && chunk->min_start > chunk->start){
chunk->start = chunk->min_start;
}
if (chunk->start < chunk->end){
buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
result = true;
}
}
return(result);
}
static bool32
forward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_Summary *buffer = chunk->buffer;
bool32 result = 0;
refresh_buffer(app, buffer);
if (chunk->end < buffer->size){
chunk->start = chunk->end;
chunk->end += chunk->data_size;
if (chunk->max_end && chunk->max_end < chunk->end){
chunk->end = chunk->max_end;
}
if (chunk->min_start && chunk->min_start > chunk->start){
chunk->start = chunk->min_start;
}
if (chunk->start < chunk->end){
buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
result = 1;
}
}
else if (chunk->add_null && chunk->end + 1 < buffer->size){
chunk->start = buffer->size;
chunk->end = buffer->size + 1;
chunk->base_data[0] = 0;
chunk->data = chunk->base_data - chunk->start;
result = 1;
}
return(result);
}
static bool32
backward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_Summary *buffer = chunk->buffer;
bool32 result = 0;
refresh_buffer(app, buffer);
if (chunk->start > 0){
chunk->end = chunk->start;
chunk->start -= chunk->data_size;
if (chunk->max_end && chunk->max_end < chunk->end){
chunk->end = chunk->max_end;
}
if (chunk->min_start && chunk->min_start > chunk->start){
chunk->start = chunk->min_start;
}
if (chunk->start < chunk->end){
buffer_read_range(app, buffer, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
result = 1;
}
}
else if (chunk->add_null && chunk->start > -1){
chunk->start = -1;
chunk->end = 0;
chunk->base_data[0] = 0;
chunk->data = chunk->base_data - chunk->start;
result = 1;
}
return(result);
}
////////////////////////////////
static bool32
init_stream_tokens(Stream_Tokens_DEP *stream, Application_Links *app, Buffer_Summary *buffer,
int32_t pos, Cpp_Token *data, int32_t count){
bool32 result = false;
refresh_buffer(app, buffer);
int32_t token_count = buffer_token_count(app, buffer);
if (buffer->tokens_are_ready && pos >= 0 && pos < token_count && count > 0){
stream->app = app;
stream->buffer = buffer;
stream->base_tokens = data;
stream->count = count;
stream->start = round_down(pos, count);
stream->end = round_up(pos, count);
stream->token_count = token_count;
if (stream->start < 0){
stream->start = 0;
}
if (stream->end > stream->token_count){
stream->end = stream->token_count;
}
buffer_read_tokens(app, buffer, stream->start, stream->end, stream->base_tokens);
stream->tokens = stream->base_tokens - stream->start;
result = true;
}
return(result);
}
static Stream_Tokens_DEP
begin_temp_stream_token(Stream_Tokens_DEP *stream){
return(*stream);
}
static void
end_temp_stream_token(Stream_Tokens_DEP *stream, Stream_Tokens_DEP temp){
if (stream->start != temp.start || stream->end != temp.end){
Application_Links *app = stream->app;
buffer_read_tokens(app, temp.buffer, temp.start, temp.end, temp.base_tokens);
stream->tokens = stream->base_tokens - temp.start;
stream->start = temp.start;
stream->end = temp.end;
}
}
static bool32
forward_stream_tokens(Stream_Tokens_DEP *stream){
Application_Links *app = stream->app;
Buffer_Summary *buffer = stream->buffer;
bool32 result = false;
refresh_buffer(app, buffer);
if (stream->end < stream->token_count){
stream->start = stream->end;
stream->end += stream->count;
if (stream->end > stream->token_count){
stream->end = stream->token_count;
}
if (stream->start < stream->end){
buffer_read_tokens(app, buffer, stream->start, stream->end, stream->base_tokens);
stream->tokens = stream->base_tokens - stream->start;
result = true;
}
}
return(result);
}
static bool32
backward_stream_tokens(Stream_Tokens_DEP *stream){
Application_Links *app = stream->app;
Buffer_Summary *buffer = stream->buffer;
bool32 result = false;
refresh_buffer(app, buffer);
if (stream->start > 0){
stream->end = stream->start;
stream->start -= stream->count;
if (0 > stream->start){
stream->start = 0;
}
if (stream->start < stream->end){
buffer_read_tokens(app, buffer, stream->start, stream->end, stream->base_tokens);
stream->tokens = stream->base_tokens - stream->start;
result = true;
}
}
return(result);
}
////////////////////////////////
static Token_Range
buffer_get_token_range(Application_Links *app, Buffer_ID buffer_id){
Token_Range range = {};
Buffer_Summary buffer = get_buffer(app, buffer_id, AccessAll);
buffer_get_token_range(app, &buffer, &range.first, &range.one_past_last);
return(range);
}
static Token_Iterator
make_token_iterator(Token_Range range, Cpp_Token *token){
Token_Iterator iterator = {};
if (range.first != 0 && range.one_past_last != 0){
if (token == 0 || token < range.first){
token = range.first;
}
if (token > range.one_past_last){
token = range.one_past_last;
}
iterator.token = token;
iterator.range = range;
}
return(iterator);
}
static Token_Iterator
make_token_iterator(Token_Range range, int32_t index){
return(make_token_iterator(range, range.first + index));
}
static void
token_iterator_set(Token_Iterator *iterator, Cpp_Token *token){
*iterator = make_token_iterator(iterator->range, token);
}
static Cpp_Token*
token_range_check(Token_Range range, Cpp_Token *token){
if (token < range.first || range.one_past_last <= token){
token = 0;
}
return(token);
}
static Cpp_Token*
token_iterator_current(Token_Iterator *iterator){
return(token_range_check(iterator->range, iterator->token));
}
static int32_t
token_iterator_current_index(Token_Iterator *iterator){
int32_t index = -1;
Cpp_Token *token = token_iterator_current(iterator);
if (token != 0 && iterator->range.first <= token && token <= iterator->range.one_past_last){
index = (int32_t)(token - iterator->range.first);
}
return(index);
}
static Cpp_Token*
token_iterator_goto_next(Token_Iterator *iterator){
Cpp_Token *token = iterator->token;
Cpp_Token *one_past_last = iterator->range.one_past_last;
for (token += 1; token < one_past_last; token += 1){
if (token->type != CPP_TOKEN_COMMENT){
break;
}
}
Cpp_Token *result = token_range_check(iterator->range, token);
*iterator = make_token_iterator(iterator->range, token);
return(result);
}
static Cpp_Token*
token_iterator_goto_next_raw(Token_Iterator *iterator){
Cpp_Token *result = token_range_check(iterator->range, iterator->token + 1);
*iterator = make_token_iterator(iterator->range, iterator->token + 1);
return(result);
}
static Cpp_Token*
token_iterator_goto_prev(Token_Iterator *iterator){
Cpp_Token *token = iterator->token;
Cpp_Token *first = iterator->range.first;
for (token -= 1; token >= first; token -= 1){
if (token->type != CPP_TOKEN_COMMENT){
break;
}
}
Cpp_Token *result = token_range_check(iterator->range, token);
*iterator = make_token_iterator(iterator->range, token);
return(result);
}
static Cpp_Token*
token_iterator_goto_prev_raw(Token_Iterator *iterator){
Cpp_Token *result = token_range_check(iterator->range, iterator->token - 1);
*iterator = make_token_iterator(iterator->range, iterator->token - 1);
return(result);
}
////////////////////////////////
static String
get_query_string(Application_Links *app, char *query_str, char *string_space, int32_t space_size){
Query_Bar bar;
bar.prompt = make_string_slowly(query_str);
bar.string = make_string_cap(string_space, 0, space_size);
if (!query_user_string(app, &bar)){
bar.string.size = 0;
}
return(bar.string);
}
static String
get_string_in_view_range(Application_Links *app, Partition *arena, View_Summary *view){
String str = {};
Buffer_Summary buffer = get_buffer(app, view->buffer_id, AccessProtected);
if (!buffer.exists) return(str);
Range range = get_view_range(view);
int32_t query_length = range.max - range.min;
if (query_length != 0){
char *query_space = push_array(arena, char, query_length);
if (buffer_read_range(app, &buffer, range.min, range.max, query_space)){
str = make_string(query_space, query_length);
}
}
return(str);
}
static String
get_token_or_word_under_pos(Application_Links *app, Buffer_Summary *buffer, int32_t pos, char *space, int32_t capacity){
String result = {};
Cpp_Get_Token_Result get_result = {};
bool32 success = buffer_get_token_index(app, buffer, pos, &get_result);
if (success && !get_result.in_whitespace){
int32_t size = get_result.token_end - get_result.token_start;
if (size > 0 && size <= capacity){
success = buffer_read_range(app, buffer, get_result.token_start, get_result.token_end, space);
if (success){
result = make_string(space, size);
}
}
}
return(result);
}
static String
build_string(Partition *part, char *s0, char *s1, char *s2){
String sr = {};
sr.memory_size = str_size(s0) + str_size(s1) + str_size(s2) + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
return(sr);
}
static String
build_string(Partition *part, char *s0, char *s1, String s2){
String sr = {};
sr.memory_size = str_size(s0) + str_size(s1) + s2.size + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, char *s0, String s1, char *s2){
String sr = {};
sr.memory_size = str_size(s0) + s1.size + str_size(s2) + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, char *s0, String s1, String s2){
String sr = {};
sr.memory_size = str_size(s0) + s1.size + s2.size + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, String s0, char *s1, char *s2){
String sr = {};
sr.memory_size = s0.size + str_size(s1) + str_size(s2) + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, String s0, char *s1, String s2){
String sr = {};
sr.memory_size = s0.size + str_size(s1) + s2.size + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, String s0, String s1, char *s2){
String sr = {};
sr.memory_size = s0.size + s1.size + str_size(s2) + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static String
build_string(Partition *part, String s0, String s1, String s2){
String sr = {};
sr.memory_size = s0.size + s1.size + s2.size + 1;
sr.str = push_array(part, char, sr.memory_size);
if (sr.str != 0){
append(&sr, s0);
append(&sr, s1);
append(&sr, s2);
}
terminate_with_null(&sr);
return(sr);
}
static bool32
lexer_keywords_default_init(Partition *arena, Cpp_Keyword_Table *kw_out, Cpp_Keyword_Table *pp_out){
bool32 success = false;
umem_4tech kw_size = cpp_get_table_memory_size_default(CPP_TABLE_KEYWORDS);
umem_4tech pp_size = cpp_get_table_memory_size_default(CPP_TABLE_PREPROCESSOR_DIRECTIVES);
void *kw_mem = push_array(arena, char, (i32_4tech)kw_size);
void *pp_mem = push_array(arena, char, (i32_4tech)pp_size);
if (kw_mem != 0 && pp_mem != 0){
*kw_out = cpp_make_table_default(CPP_TABLE_KEYWORDS, kw_mem, kw_size);
*pp_out = cpp_make_table_default(CPP_TABLE_PREPROCESSOR_DIRECTIVES, pp_mem, pp_size);
success = true;
}
return(success);
}
////////////////////////////////
static String
get_hot_directory(Application_Links *app, Partition *arena){
Temp_Memory temp = begin_temp_memory(arena);
int32_t space_cap = partition_remaining(arena);
char *space = push_array(arena, char, space_cap);
String hot_dir = make_string_cap(space, 0, space_cap);
hot_dir.size = directory_get_hot(app, hot_dir.str, hot_dir.memory_size);
end_temp_memory(temp);
push_array(arena, char, hot_dir.size);
hot_dir.memory_size = hot_dir.size;
return(hot_dir);
}
////////////////////////////////
static String
dump_file_handle(Partition *arena, FILE *file){
String str = {};
if (file != 0){
fseek(file, 0, SEEK_END);
int32_t size = ftell(file);
char *mem = push_array(arena, char, size + 1);
push_align(arena, 8);
if (mem != 0){
fseek(file, 0, SEEK_SET);
fread(mem, 1, size, file);
mem[size] = 0;
str = make_string_cap(mem, size, size + 1);
}
}
return(str);
}
static File_Handle_Path
open_file_search_up_path(Partition *arena, String path, String file_name){
File_Handle_Path result = {};
int32_t cap = path.size + file_name.size + 2;
char *space = push_array(arena, char, cap);
push_align(arena, 8);
String name_str = make_string_cap(space, 0, cap);
append(&name_str, path);
if (name_str.size == 0 || !char_is_slash(name_str.str[name_str.size - 1])){
append(&name_str, "/");
}
for (;;){
int32_t base_size = name_str.size;
append(&name_str, file_name);
terminate_with_null(&name_str);
result.file = fopen(name_str.str, "rb");
if (result.file != 0){
result.path = name_str;
break;
}
name_str.size = base_size;
remove_last_folder(&name_str);
if (name_str.size >= base_size){
break;
}
}
return(result);
}
static FILE*
open_file_try_current_path_then_binary_path(Application_Links *app, char *file_name){
FILE *file = fopen(file_name, "rb");
if (file == 0){
char space[256];
int32_t size = get_4ed_path(app, space, sizeof(space));
String str = make_string_cap(space, size, sizeof(space));
append(&str, "/");
append(&str, file_name);
if (terminate_with_null(&str)){
file = fopen(str.str, "rb");
}
}
return(file);
}
static char*
get_null_terminated(Partition *scratch, String name){
char *name_terminated = 0;
if (name.size < name.memory_size){
terminate_with_null(&name);
name_terminated = name.str;
}
else{
name_terminated = push_array(scratch, char, name.size + 1);
if (name_terminated != 0){
memcpy(name_terminated, name.str, name.size);
name_terminated[name.size] = 0;
}
}
return(name_terminated);
}
static FILE*
open_file(Partition *scratch, String name){
FILE *file = 0;
Temp_Memory temp = begin_temp_memory(scratch);
char *name_terminated = get_null_terminated(scratch, name);
if (name_terminated != 0){
file = fopen(name_terminated, "rb");
}
end_temp_memory(temp);
return(file);
}
static File_Name_Data
dump_file(Partition *arena, String file_name){
File_Name_Data result = {};
FILE *file = open_file(arena, file_name);
if (file != 0){
result.file_name = file_name;
result.data = dump_file_handle(arena, file);
fclose(file);
}
return(result);
}
static File_Name_Path_Data
dump_file_search_up_path(Partition *arena, String path, String file_name){
File_Name_Path_Data result = {};
File_Handle_Path file = open_file_search_up_path(arena, path, file_name);
if (file.file != 0){
result.file_name = file_name;
result.path = file.path;
result.data = dump_file_handle(arena, file.file);
fclose(file.file);
}
return(result);
}
static void
sort_pairs_by_key__quick(Sort_Pair_i32 *pairs, int32_t first, int32_t one_past_last){
int32_t dif = one_past_last - first;
if (dif >= 2){
int32_t pivot = one_past_last - 1;
Sort_Pair_i32 pivot_pair = pairs[pivot];
int32_t j = first;
bool32 interleave = false;
for (int32_t i = first; i < pivot; i += 1){
Sort_Pair_i32 pair = pairs[i];
if (pair.key < pivot_pair.key){
pairs[i] = pairs[j];
pairs[j] = pair;
j += 1;
}
else if (pair.key == pivot_pair.key){
if (interleave){
pairs[i] = pairs[j];
pairs[j] = pair;
j += 1;
}
interleave = !interleave;
}
}
pairs[pivot] = pairs[j];
pairs[j] = pivot_pair;
sort_pairs_by_key__quick(pairs, first, j);
sort_pairs_by_key__quick(pairs, j + 1, one_past_last);
}
}
static void
sort_pairs_by_key(Sort_Pair_i32 *pairs, int32_t count){
sort_pairs_by_key__quick(pairs, 0, count);
}
static Range_Array
get_ranges_of_duplicate_keys(Partition *arena, int32_t *keys, int32_t stride, int32_t count){
Range_Array result = {};
result.ranges = push_array(arena, Range, 0);
uint8_t *ptr = (uint8_t*)keys;
int32_t start_i = 0;
for (int32_t i = 1; i <= count; i += 1){
bool32 is_end = false;
if (i == count){
is_end = true;
}
else if (*(int32_t*)(ptr + i*stride) != *(int32_t*)(ptr + start_i*stride)){
is_end = true;
}
if (is_end){
Range *new_range = push_array(arena, Range, 1);
new_range->first = start_i;
new_range->one_past_last = i;
start_i = i;
}
}
result.count = (int32_t)(push_array(arena, Range, 0) - result.ranges);
return(result);
}
static void
no_mark_snap_to_cursor(Application_Links *app, Managed_Scope view_scope){
managed_variable_set(app, view_scope, view_snap_mark_to_cursor, false);
}
static void
no_mark_snap_to_cursor(Application_Links *app, View_ID view_id){
Managed_Scope scope = view_get_managed_scope(app, view_id);
no_mark_snap_to_cursor(app, scope);
}
static void
no_mark_snap_to_cursor_if_shift(Application_Links *app, View_ID view_id){
User_Input in = get_command_input(app);
if (in.key.modifiers[MDFR_SHIFT_INDEX]){
no_mark_snap_to_cursor(app, view_id);
}
}
static bool32
view_has_highlighted_range(Application_Links *app, View_ID view_id){
if (fcoder_mode == FCoderMode_NotepadLike){
View_Summary view = get_view(app, view_id, AccessAll);
return(view.cursor.pos != view.mark.pos);
}
return(false);
}
static bool32
if_view_has_highlighted_range_delete_range(Application_Links *app, View_ID view_id){
if (view_has_highlighted_range(app, view_id)){
View_Summary view = get_view(app, view_id, AccessAll);
Range range = get_view_range(&view);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, AccessOpen);
buffer_replace_range(app, &buffer, range.min, range.max, 0, 0);
return(true);
}
return(false);
}
static void
begin_notepad_mode(Application_Links *app){
fcoder_mode = FCoderMode_NotepadLike;
for (View_Summary view = get_view_first(app, AccessAll);
view.exists;
get_view_next(app, &view, AccessAll)){
view_set_mark(app, &view, seek_pos(view.cursor.pos));
}
}
// BOTTOM