/*
* 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, i32 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, i32 mapid, b32 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, i32 mapid){
begin_map(helper, mapid, false);
}
static void
restart_map(Bind_Helper *helper, i32 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, 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){
bind(helper, code, modifiers, cmd.command);
}
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, Custom_Command_Function *func){
bind(helper, 0, modifiers, func);
}
static void
inherit_map(Bind_Helper *helper, i32 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, i32 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_modify_color_table_hook(Bind_Helper *helper, Modify_Color_Table_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_modify_color_table;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_clipboard_change_hook(Bind_Helper *helper, Clipboard_Change_Hook_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_clipboard_change;
unit.hook.func = (void*)func;
write_unit(helper, unit);
}
static void
set_get_view_buffer_region_hook(Bind_Helper *helper, Get_View_Buffer_Region_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_get_view_buffer_region;
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_range_hook(Bind_Helper *helper, File_Edit_Range_Function *func){
Binding_Unit unit = {};
unit.type = unit_hook;
unit.hook.hook_id = special_hook_file_edit_range;
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 i32
end_bind_helper(Bind_Helper *helper){
if (helper->header){
helper->header->header.total_size = (i32)(helper->cursor - helper->start);
helper->header->header.error = helper->error;
}
i32 result = helper->write_total;
return(result);
}
static Bind_Buffer
end_bind_helper_get_buffer(Bind_Helper *helper){
i32 size = end_bind_helper(helper);
Bind_Buffer result = {};
result.data = helper->start;
result.size = size;
return(result);
}
static u32
get_key_code(char *buffer){
u32 ignore;
u32 result = utf8_to_u32_length_unchecked((u8*)buffer, &ignore);
return(result);
}
////////////////////////////////
internal Character_Predicate
character_predicate_from_function(Character_Predicate_Function *func){
Character_Predicate predicate = {};
i32 byte_index = 0;
for (u32 i = 0; i <= 255;){
b8 v[8];
for (i32 bit_index = 0; bit_index < 8; i += 1, bit_index += 1){
v[bit_index] = func((u8)i);
}
predicate.b[byte_index] = (
(v[0] << 0) |
(v[1] << 1) |
(v[2] << 2) |
(v[3] << 3) |
(v[4] << 4) |
(v[5] << 5) |
(v[6] << 6) |
(v[7] << 7)
);
byte_index += 1;
}
return(predicate);
}
internal Character_Predicate
character_predicate_from_character(u8 character){
Character_Predicate predicate = {};
predicate.b[character/8] = (1 << (character%8));
return(predicate);
}
#define character_predicate_check_character(p, c) (((p).b[(c)/8] & (1 << ((c)%8))) != 0)
internal Character_Predicate
character_predicate_or(Character_Predicate *a, Character_Predicate *b){
Character_Predicate p = {};
for (i32 i = 0; i < ArrayCount(p.b); i += 1){
p.b[i] = a->b[i] | b->b[i];
}
return(p);
}
internal Character_Predicate
character_predicate_and(Character_Predicate *a, Character_Predicate *b){
Character_Predicate p = {};
for (i32 i = 0; i < ArrayCount(p.b); i += 1){
p.b[i] = a->b[i] & b->b[i];
}
return(p);
}
internal Character_Predicate
character_predicate_not(Character_Predicate *a){
Character_Predicate p = {};
for (i32 i = 0; i < ArrayCount(p.b); i += 1){
p.b[i] = ~(a->b[i]);
}
return(p);
}
internal i32
buffer_seek_character_class_change__inner(Application_Links *app, Buffer_ID buffer, Character_Predicate *positive, Character_Predicate *negative, Scan_Direction direction, i32 start_pos){
i32 pos = start_pos;
switch (direction){
case Scan_Backward:
{
b32 s1 = buffer_seek_character_class(app, buffer, negative, direction, pos, &pos);
b32 s2 = buffer_seek_character_class(app, buffer, positive, direction, pos, &pos);
if (s1 && s2){
pos += 1;
}
}break;
case Scan_Forward:
{
pos -= 1;
buffer_seek_character_class(app, buffer, positive, direction, pos, &pos);
buffer_seek_character_class(app, buffer, negative, direction, pos, &pos);
}break;
}
return(pos);
}
internal i32
buffer_seek_character_class_change_1_0(Application_Links *app, Buffer_ID buffer, Character_Predicate *predicate, Scan_Direction direction, i32 start_pos){
Character_Predicate negative = character_predicate_not(predicate);
return(buffer_seek_character_class_change__inner(app, buffer,
predicate, &negative,
direction, start_pos));
}
internal i32
buffer_seek_character_class_change_0_1(Application_Links *app, Buffer_ID buffer, Character_Predicate *predicate, Scan_Direction direction, i32 start_pos){
Character_Predicate negative = character_predicate_not(predicate);
return(buffer_seek_character_class_change__inner(app, buffer,
&negative, predicate,
direction, start_pos));
}
////////////////////////////////
static String_Const_u8
push_hot_directory(Application_Links *app, Arena *arena){
String_Const_u8 result = {};
get_hot_directory(app, arena, &result);
return(result);
}
static String_Const_u8
push_4ed_path(Application_Links *app, Arena *arena){
String_Const_u8 result = {};
get_4ed_path(app, arena, &result);
return(result);
}
static String_Const_u8
push_buffer_base_name(Application_Links *app, Arena *arena, Buffer_ID buffer){
String_Const_u8 result = {};
buffer_get_base_buffer_name(app, buffer, arena, &result);
return(result);
}
static String_Const_u8
push_buffer_unique_name(Application_Links *app, Arena *arena, Buffer_ID buffer){
String_Const_u8 result = {};
buffer_get_unique_buffer_name(app, buffer, arena, &result);
return(result);
}
static String_Const_u8
push_buffer_file_name(Application_Links *app, Arena *arena, Buffer_ID buffer){
String_Const_u8 result = {};
buffer_get_file_name(app, buffer, arena, &result);
return(result);
}
////////////////////////////////
static Range
get_view_range(Application_Links *app, View_ID view){
Range range = {};
view_get_cursor_pos(app, view, &range.first);
view_get_mark_pos(app, view, &range.one_past_last);
return(rectify(range));
}
static f32
get_view_y(Application_Links *app, View_ID view){
i32 pos = 0;
view_get_cursor_pos(app, view, &pos);
Full_Cursor cursor = {};
view_compute_cursor(app, view, seek_pos(pos), &cursor);
return(cursor.wrapped_y);
}
static f32
get_view_x(Application_Links *app, View_ID view){
i32 pos = 0;
view_get_cursor_pos(app, view, &pos);
Full_Cursor cursor = {};
view_compute_cursor(app, view, seek_pos(pos), &cursor);
return(cursor.wrapped_x);
}
static b32
is_valid_line(Application_Links *app, Buffer_ID buffer_id, i32 line){
i32 max_line = 0;
buffer_get_line_count(app, buffer_id, &max_line);
return(1 <= line && line <= max_line);
}
static b32
is_valid_line_range(Application_Links *app, Buffer_ID buffer_id, Range range){
i32 max_line = 0;
buffer_get_line_count(app, buffer_id, &max_line);
return(1 <= range.first && range.first <= range.end && range.end <= max_line);
}
static i32
get_line_number_from_pos(Application_Links *app, Buffer_ID buffer, i32 pos){
Partial_Cursor partial_cursor = {};
buffer_compute_cursor(app, buffer, seek_pos(pos), &partial_cursor);
return(partial_cursor.line);
}
static i32
character_pos_to_pos_view(Application_Links *app, View_ID view, i32 character_pos){
i32 result = 0;
Full_Cursor cursor = {};
if (view_compute_cursor(app, view, seek_character_pos(character_pos), &cursor)){
result = cursor.pos;
}
return(result);
}
static i32
character_pos_to_pos_buffer(Application_Links *app, Buffer_ID buffer, i32 character_pos){
i32 result = 0;
Partial_Cursor cursor = {};
if (buffer_compute_cursor(app, buffer, seek_character_pos(character_pos), &cursor)){
result = cursor.pos;
}
return(result);
}
static Partial_Cursor
get_line_side(Application_Links *app, Buffer_ID buffer, i32 line_number, Side side){
Partial_Cursor result = {};
i32 character_index = (side == Side_Min)?(1):(-1);
if (!buffer_compute_cursor(app, buffer, seek_line_char(line_number, character_index), &result)){
block_zero_struct(&result);
}
return(result);
}
static i32
get_line_side_pos(Application_Links *app, Buffer_ID buffer, i32 line_number, Side side){
i32 pos = -1;
Partial_Cursor partial_cursor = get_line_side(app, buffer, line_number, side);
if (partial_cursor.line != 0){
pos = partial_cursor.pos;
}
return(pos);
}
static Partial_Cursor
get_line_start(Application_Links *app, Buffer_ID buffer, i32 line_number){
return(get_line_side(app, buffer, line_number, Side_Min));
}
static i32
get_line_start_pos(Application_Links *app, Buffer_ID buffer, i32 line_number){
return(get_line_side_pos(app, buffer, line_number, Side_Min));
}
// NOTE(allen): The position returned has the index of the terminating newline character,
// not one past the newline character.
static Partial_Cursor
get_line_end(Application_Links *app, Buffer_ID buffer, i32 line_number){
return(get_line_side(app, buffer, line_number, Side_Max));
}
static i32
get_line_end_pos(Application_Links *app, Buffer_ID buffer, i32 line_number){
return(get_line_side_pos(app, buffer, line_number, Side_Max));
}
static i32
get_line_pos(Application_Links *app, Buffer_ID buffer, i32 line_number, Side side){
i32 result = 0;
if (side == Side_Min){
result = get_line_start_pos(app, buffer, line_number);
}
else{
result = get_line_start_pos(app, buffer, line_number);
}
}
// NOTE(allen): The range returned does not include the terminating newline character
static Range_Partial_Cursor
get_line_range(Application_Links *app, Buffer_ID buffer, i32 line_number){
b32 success = false;
Range_Partial_Cursor result = {};
result.begin = get_line_start(app, buffer, line_number);
if (result.begin.line != 0){
result.end = get_line_end(app, buffer, line_number);
if (result.end.line != 0){
success = true;
}
}
if (!success){
block_zero_struct(&result);
}
return(result);
}
// NOTE(allen): The range returned does not include the terminating newline character
static Range
get_line_pos_range(Application_Links *app, Buffer_ID buffer, i32 line_number){
Range_Partial_Cursor range = get_line_range(app, buffer, line_number);
Range result = {};
if (range.begin.line != 0 && range.end.line != 0){
result = make_range(range.begin.pos, range.end.pos);
}
return(result);
}
static Range
make_range_from_cursors(Range_Partial_Cursor range){
return(make_range(range.begin.pos, range.end.pos));
}
static i32
get_line_side_pos_from_pos(Application_Links *app, Buffer_ID buffer, i32 pos, Side side){
i32 line_number = get_line_number_from_pos(app, buffer, pos);
return(get_line_side_pos(app, buffer, line_number, side));
}
static i32
get_line_start_pos_from_pos(Application_Links *app, Buffer_ID buffer, i32 pos){
return(get_line_side_pos_from_pos(app, buffer, pos, Side_Min));
}
static i32
get_line_end_pos_from_pos(Application_Links *app, Buffer_ID buffer, i32 pos){
return(get_line_side_pos_from_pos(app, buffer, pos, Side_Max));
}
static Cpp_Token*
get_first_token_from_pos(Cpp_Token_Array tokens, i32 pos){
Cpp_Get_Token_Result get_token = cpp_get_token(tokens, pos);
if (get_token.in_whitespace_after_token){
get_token.token_index += 1;
}
Cpp_Token *result = 0;
if (get_token.token_index < tokens.count){
result = tokens.tokens + get_token.token_index;
}
return(result);
}
static Cpp_Token*
get_first_token_from_line(Application_Links *app, Buffer_ID buffer, Cpp_Token_Array tokens, i32 line){
i32 line_start = get_line_start_pos(app, buffer, line);
return(get_first_token_from_pos(tokens, line_start));
}
////////////////////////////////
static Cpp_Token_Array
buffer_get_all_tokens(Application_Links *app, Arena *arena, Buffer_ID buffer_id){
Cpp_Token_Array array = {};
if (buffer_exists(app, buffer_id)){
b32 is_lexed = false;
if (buffer_get_setting(app, buffer_id, BufferSetting_Lex, &is_lexed)){
if (is_lexed){
buffer_token_count(app, buffer_id, &array.count);
array.max_count = array.count;
array.tokens = push_array(arena, Cpp_Token, array.count);
buffer_read_tokens(app, buffer_id, 0, array.count, array.tokens);
}
}
}
return(array);
}
////////////////////////////////
static i32
scan_any_boundary(Application_Links *app, Boundary_Function *func, Buffer_ID buffer, Scan_Direction direction, i32 pos){
i32 a = func(app, buffer, Side_Min, direction, pos);
i32 b = func(app, buffer, Side_Max, direction, pos);
i32 result = 0;
if (direction == Scan_Forward){
result = Min(a, b);
}
else{
result = Max(a, b);
}
return(result);
}
static i32
scan(Application_Links *app, Boundary_Function *func, Buffer_ID buffer, Scan_Direction direction, i32 pos){
Side side = (direction == Scan_Forward)?(Side_Max):(Side_Min);
return(func(app, buffer, side, direction, pos));
}
static i32
scan(Application_Links *app, Boundary_Function_List funcs, Buffer_ID buffer, Scan_Direction direction, i32 start_pos){
i32 result = 0;
if (direction == Scan_Forward){
i32 size = 0;
buffer_get_size(app, buffer, &size);
result = size + 1;
for (Boundary_Function_Node *node = funcs.first;
node != 0;
node = node->next){
i32 pos = scan(app, node->func, buffer, direction, start_pos);
result = Min(result, pos);
}
}
else{
result = -1;
for (Boundary_Function_Node *node = funcs.first;
node != 0;
node = node->next){
i32 pos = scan(app, node->func, buffer, direction, start_pos);
result = Max(result, pos);
}
}
return(result);
}
static void
push_boundary(Arena *arena, Boundary_Function_List *list, Boundary_Function *func){
Boundary_Function_Node *node = push_array(arena, Boundary_Function_Node, 1);
sll_queue_push(list->first, list->last, node);
list->count += 1;
node->func = func;
}
static Boundary_Function_List
push_boundary_list__innerv(Arena *arena, va_list args){
Boundary_Function_List list = {};
for (;;){
Boundary_Function *func = va_arg(args, Boundary_Function*);
if (func == 0){
break;
}
push_boundary(arena, &list, func);
}
return(list);
}
static Boundary_Function_List
push_boundary_list__inner(Arena *arena, ...){
va_list args;
va_start(args, arena);
Boundary_Function_List result = push_boundary_list__innerv(arena, args);
va_end(args);
return(result);
}
#define push_boundary_list(a,...) push_boundary_list__inner((a), __VA_ARGS__, 0)
static i32
boundary_predicate(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos, Character_Predicate *predicate){
i32 result = 0;
switch (side){
case Side_Min:
{
result = buffer_seek_character_class_change_0_1(app, buffer, predicate, direction, pos);
}break;
case Side_Max:
{
result = buffer_seek_character_class_change_1_0(app, buffer, predicate, direction, pos);
}break;
}
return(result);
}
static i32
boundary_non_whitespace(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
return(boundary_predicate(app, buffer, side, direction, pos, &character_predicate_non_whitespace));
}
static i32
boundary_alpha_numeric(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
return(boundary_predicate(app, buffer, side, direction, pos, &character_predicate_alpha_numeric));
}
static i32
boundary_alpha_numeric_underscore(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
return(boundary_predicate(app, buffer, side, direction, pos,
&character_predicate_alpha_numeric_underscore));
}
static i32
boundary_alpha_numeric_camel(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
i32 an_pos = boundary_alpha_numeric(app, buffer, side, direction, pos);
i32 cap_pos = 0;
buffer_seek_character_class(app, buffer, &character_predicate_uppercase,
direction, pos, &cap_pos);
if (side == Side_Max){
i32 an_left_pos = boundary_alpha_numeric(app, buffer, flip_side(side),
flip_direction(direction), an_pos);
if (cap_pos == an_left_pos){
buffer_seek_character_class(app, buffer, &character_predicate_uppercase,
direction, cap_pos, &cap_pos);
}
}
i32 result = 0;
if (direction == Scan_Backward){
result = Max(an_pos, cap_pos);
}
else{
result = Min(an_pos, cap_pos);
}
return(result);
}
static i32
boundary_token(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
i32 result = 0;
if (!buffer_tokens_are_ready(app, buffer)){
result = boundary_non_whitespace(app, buffer, side, direction, pos);
}
else{
Cpp_Token *first_token = 0;
Cpp_Token *last_token = 0;
buffer_get_token_range(app, buffer, &first_token, &last_token);
Cpp_Token_Array tokens = {first_token, (i32)(last_token - first_token)};
switch (direction){
case Scan_Forward:
{
i32 buffer_size = 0;
buffer_get_size(app, buffer, &buffer_size);
if (tokens.count > 0){
Cpp_Token *token = get_first_token_from_pos(tokens, pos);
if (token != 0){
if (side == Side_Max){
result = token->start + token->size;
}
else{
if (token->start > pos){
result = token->start;
}
else{
token += 1;
if (token < tokens.tokens + tokens.count){
result = token->start;
}
else{
result = buffer_size;
}
}
}
}
else{
result = buffer_size;
}
}
else{
result = buffer_size;
}
}break;
case Scan_Backward:
{
if (tokens.count > 0){
Cpp_Token *token = get_first_token_from_pos(tokens, pos);
if (side == Side_Min){
if (token == 0){
token = tokens.tokens + tokens.count - 1;
result = token->start;
}
else{
if (token->start < pos){
result = token->start;
}
else{
token -= 1;
if (token >= tokens.tokens){
result = token->start;
}
else{
result = 0;
}
}
}
}
else{
if (token == 0){
token = tokens.tokens + tokens.count - 1;
result = token->start + token->size;
}
else{
token -= 1;
if (token >= tokens.tokens && token->start + token->size == pos){
token -= 1;
}
if (token >= tokens.tokens){
result = token->start + token->size;
}
else{
result = 0;
}
}
}
}
else{
result = 0;
}
}break;
}
}
return(result);
}
static i32
boundary_line(Application_Links *app, Buffer_ID buffer, Side side, Scan_Direction direction, i32 pos){
i32 line_number = get_line_number_from_pos(app, buffer, pos);
i32 new_pos = get_line_side_pos(app, buffer, line_number, side);
if (direction == Scan_Backward && new_pos >= pos){
if (line_number > 1){
new_pos = get_line_side_pos(app, buffer, line_number - 1, side);
}
else{
new_pos = 0;
}
}
else if (direction == Scan_Forward && new_pos <= pos){
new_pos = get_line_side_pos(app, buffer, line_number + 1, side);
if (new_pos <= pos){
buffer_get_size(app, buffer, &new_pos);
}
}
return(new_pos);
}
////////////////////////////////
static Range
get_line_range_from_pos_range(Application_Links *app, Buffer_ID buffer, Range pos_range){
Range line_range = {};
line_range.first = get_line_number_from_pos(app, buffer, pos_range.first);
if (line_range.first != 0){
line_range.end = get_line_number_from_pos(app, buffer, pos_range.one_past_last);
if (line_range.end == 0){
line_range.first = 0;
}
}
return(line_range);
}
// NOTE(allen): The end of the returned range does not include the terminating newline character of
// the last line.
static Range
get_pos_range_from_line_range(Application_Links *app, Buffer_ID buffer, Range line_range){
Range pos_range = {};
if (is_valid_line_range(app, buffer, line_range)){
pos_range.first = get_line_start_pos(app, buffer, line_range.first);
pos_range.one_past_last = get_line_end_pos(app, buffer, line_range.end);
}
return(pos_range);
}
static Range
enclose_boundary(Application_Links *app, Buffer_ID buffer, Range range, Boundary_Function *func){
i32 new_min = func(app, buffer, Side_Min, Scan_Backward, range.min + 1);
i32 new_min_check = func(app, buffer, Side_Max, Scan_Backward, range.min + 1);
if (new_min_check <= new_min && new_min < range.min){
range.min = new_min;
}
i32 new_max = func(app, buffer, Side_Max, Scan_Forward, range.max - 1);
i32 new_max_check = func(app, buffer, Side_Min, Scan_Forward, range.max - 1);
if (new_max_check >= new_max && new_max > range.max){
range.max = new_max;
}
return(range);
}
static Range
enclose_non_whitespace(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_non_whitespace));
}
static Range
enclose_tokens(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_token));
}
static Range
enclose_alpha_numeric(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_alpha_numeric));
}
static Range
enclose_alpha_numeric_underscore(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_alpha_numeric_underscore));
}
static Range
enclose_alpha_numeric_camel(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_alpha_numeric_camel));
}
static Range
pos_range_enclose_whole_lines(Application_Links *app, Buffer_ID buffer, Range range){
return(enclose_boundary(app, buffer, range, boundary_line));
}
////////////////////////////////
static Range
get_snipe_range(Application_Links *app, Boundary_Function_List funcs, Buffer_ID buffer, i32 pos, Scan_Direction direction){
Range result = {};
i32 buffer_size = 0;
buffer_get_size(app, buffer, &buffer_size);
i32 pos0 = pos;
i32 pos1 = scan(app, funcs, buffer, direction, pos0);
if (0 <= pos1 && pos1 <= buffer_size){
i32 pos2 = scan(app, funcs, buffer, flip_direction(direction), pos1);
if (0 <= pos2 && pos2 <= buffer_size){
if (direction == Scan_Backward){
pos2 = clamp_bot(pos2, pos0);
}
else{
pos2 = clamp_top(pos2, pos0);
}
result = make_range(pos1, pos2);
}
}
return(result);
}
static Range
get_snipe_range(Application_Links *app, Boundary_Function *func, Buffer_ID buffer, i32 pos, Scan_Direction direction){
Scratch_Block scratch(app);
return(get_snipe_range(app, push_boundary_list(scratch, func), buffer, pos, direction));
}
////////////////////////////////
static String_Const_u8
push_buffer_range(Application_Links *app, Arena *arena, Buffer_ID buffer, umem first, umem one_past_last){
String_Const_u8 result = {};
if (first <= one_past_last){
umem length = one_past_last - first;
Temp_Memory restore_point = begin_temp(arena);
u8 *memory = push_array(arena, u8, length);
if (buffer_read_range(app, buffer, (i32)first, (i32)one_past_last, (char*)memory)){
result = SCu8(memory, length);
}
else{
end_temp(restore_point);
}
}
return(result);
}
static String_Const_u8
push_buffer_range(Application_Links *app, Arena *arena, Buffer_ID buffer, Range range){
return(push_buffer_range(app, arena, buffer, range.first, range.one_past_last));
}
static String_Const_u8
push_buffer_range(Application_Links *app, Arena *arena, Buffer_ID buffer, Range_umem range){
return(push_buffer_range(app, arena, buffer, range.first, range.one_past_last));
}
static String_Const_u8
push_token_lexeme(Application_Links *app, Arena *arena, Buffer_ID buffer, Cpp_Token token){
return(push_buffer_range(app, arena, buffer, token.start, token.start + token.size));
}
static String_Const_u8
push_buffer_line(Application_Links *app, Arena *arena, Buffer_ID buffer, i32 line_number){
return(push_buffer_range(app, arena, buffer, get_line_pos_range(app, buffer, line_number)));
}
static String_Const_u8
push_entire_buffer(Application_Links *app, Arena *arena, Buffer_ID buffer){
i32 size = 0;
buffer_get_size(app, buffer, &size);
return(push_buffer_range(app, arena, buffer, 0, size));
}
static String_Const_u8
push_string_in_view_range(Application_Links *app, Arena *arena, View_ID view){
Buffer_ID buffer = 0;
view_get_buffer(app, view, AccessProtected, &buffer);
return(push_buffer_range(app, arena, buffer, get_view_range(app, view)));
}
static String_Const_u8
push_enclose_range_at_pos(Application_Links *app, Arena *arena, Buffer_ID buffer, i32 pos, Enclose_Function *enclose){
Range range = enclose(app, buffer, make_range(pos));
return(push_buffer_range(app, arena, buffer, range));
}
////////////////////////////////
static b32
buffer_has_name_with_star(Application_Links *app, Buffer_ID buffer){
Scratch_Block scratch(app);
String_Const_u8 str = push_buffer_unique_name(app, scratch, buffer);
return(str.size > 0 && str.str[0] == '*');
}
static char
buffer_get_char(Application_Links *app, Buffer_ID buffer_id, i32 pos){
i32 buffer_size = 0;
buffer_get_size(app, buffer_id, &buffer_size);
char result = ' ';
if (0 <= pos && pos < buffer_size){
buffer_read_range(app, buffer_id, pos, pos + 1, &result);
}
return(result);
}
static b32
token_lexeme_string_match(Application_Links *app, Buffer_ID buffer, Cpp_Token token, String_Const_u8 b){
Scratch_Block scratch(app);
return(string_match(push_token_lexeme(app, scratch, buffer, token), b));
}
static b32
line_is_valid_and_blank(Application_Links *app, Buffer_ID buffer, i32 line_number){
b32 result = false;
if (is_valid_line(app, buffer, line_number)){
Scratch_Block scratch(app);
String_Const_u8 line = push_buffer_line(app, scratch, buffer, line_number);
result = true;
for (umem i = 0; i < line.size; i += 1){
if (!character_is_whitespace(line.str[i])){
result = false;
break;
}
}
}
return(result);
}
////////////////////////////////
static i32
get_pos_past_lead_whitespace(Application_Links *app, Buffer_ID buffer, i32 pos){
Scratch_Block scratch(app);
i32 line_number = get_line_number_from_pos(app, buffer, pos);
Range line_range = get_line_pos_range(app, buffer, line_number);
String_Const_u8 line = push_buffer_range(app, scratch, buffer, line_range);
i32 result = line_range.end;
for (umem i = 0; i < line.size; i += 1){
if (!character_is_whitespace(line.str[i])){
result = line_range.start + (i32)i;
break;
}
}
result = clamp_bot(result, pos);
return(result);
}
static void
move_past_lead_whitespace(Application_Links *app, View_ID view, Buffer_ID buffer){
i32 pos = 0;
view_get_cursor_pos(app, view, &pos);
i32 new_pos = get_pos_past_lead_whitespace(app, buffer, pos);
view_set_cursor(app, view, seek_pos(new_pos), true);
}
static void
move_past_lead_whitespace(Application_Links *app, View_ID view){
Buffer_ID buffer = 0;
view_get_buffer(app, view, AccessProtected, &buffer);
move_past_lead_whitespace(app, view, buffer);
}
static b32
line_is_blank(Application_Links *app, Buffer_ID buffer, i32 line_number){
Scratch_Block scratch(app);
String_Const_u8 line = push_buffer_line(app, scratch, buffer, line_number);
b32 is_blank = true;
for (umem i = 0; i < line.size; i += 1){
if (!character_is_whitespace(line.str[i])){
is_blank = false;
break;
}
}
return(is_blank);
}
static i32
get_line_number_of__whitespace_status_line(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 line_number_start, b32 get_blank_line){
i32 line_count = 0;
buffer_get_line_count(app, buffer, &line_count);
i32 line_number = line_number_start + direction;
for (;1 <= line_number && line_number <= line_count; line_number += direction){
b32 is_blank = line_is_blank(app, buffer, line_number);
if (is_blank == get_blank_line){
break;
}
}
line_number = clamp(1, line_number, line_count);
return(line_number);
}
static i32
get_line_number_of_non_blank_line(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 line_number_start){
return(get_line_number_of__whitespace_status_line(app, buffer, direction, line_number_start, false));
}
static i32
get_line_number_of_blank_line(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 line_number_start){
return(get_line_number_of__whitespace_status_line(app, buffer, direction, line_number_start, true));
}
static i32
get_pos_of_blank_line(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 pos_start){
i32 line_number_start = get_line_number_from_pos(app, buffer, pos_start);
i32 blank_line = get_line_number_of_blank_line(app, buffer, direction, line_number_start);
i32 pos = get_line_start_pos(app, buffer, blank_line);
return(pos);
}
static i32
get_line_number_of_blank_line_grouped(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 line_number_start){
i32 line_number = line_number_start;
if (line_is_blank(app, buffer, line_number)){
line_number = get_line_number_of_non_blank_line(app, buffer, direction, line_number);
}
line_number = get_line_number_of_blank_line(app, buffer, direction, line_number);
return(line_number);
}
static i32
get_pos_of_blank_line_grouped(Application_Links *app, Buffer_ID buffer, Scan_Direction direction, i32 pos_start){
i32 line_number_start = get_line_number_from_pos(app, buffer, pos_start);
i32 blank_line = get_line_number_of_blank_line_grouped(app, buffer, direction, line_number_start);
i32 pos = get_line_start_pos(app, buffer, blank_line);
return(pos);
}
////////////////////////////////
static void
exec_command(Application_Links *app, Custom_Command_Function *func){
func(app);
}
static void
exec_command(Application_Links *app, Generic_Command cmd){
exec_command(app, cmd.command);
}
static i32
key_is_unmodified(Key_Event_Data *key){
int8_t *mods = key->modifiers;
i32 unmodified = (!mods[MDFR_CONTROL_INDEX] && !mods[MDFR_ALT_INDEX]);
return(unmodified);
}
static u32
to_writable_character(User_Input in, uint8_t *character){
u32 result = 0;
if (in.key.character != 0){
u32_to_utf8_unchecked(in.key.character, character, &result);
}
return(result);
}
static u32
to_writable_character(Key_Event_Data key, uint8_t *character){
u32 result = 0;
if (key.character != 0){
u32_to_utf8_unchecked(key.character, character, &result);
}
return(result);
}
static String_Const_u8
backspace_utf8(String_Const_u8 string){
if (string.size > 0){
umem i = string.size - 1;
for (; i > 0; --i){
if (string.str[i] <= 0x7F || string.str[i] >= 0xC0){
break;
}
}
string.size = i;
}
return(string);
}
static b32
query_user_general(Application_Links *app, Query_Bar *bar, b32 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);
}
b32 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];
u32 length = 0;
b32 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){
bar->string = backspace_utf8(bar->string);
}
else if (good_character){
String_u8 string = Su8(bar->string.str, bar->string.size, bar->string_capacity);
string_append(&string, SCu8(character, length));
bar->string = string.string;
}
}
return(success);
}
static b32
query_user_string(Application_Links *app, Query_Bar *bar){
return(query_user_general(app, bar, false));
}
static b32
query_user_number(Application_Links *app, Query_Bar *bar){
return(query_user_general(app, bar, true));
}
////////////////////////////////
static Buffer_Identifier
buffer_identifier(char *str, i32 len){
Buffer_Identifier identifier;
identifier.name = str;
identifier.name_len = len;
identifier.id = 0;
return(identifier);
}
static Buffer_Identifier
buffer_identifier(String_Const_u8 str){
return(buffer_identifier((char*)str.str, (i32)str.size));
}
static Buffer_Identifier
buffer_identifier(Buffer_ID id){
Buffer_Identifier identifier;
identifier.name = 0;
identifier.name_len = 0;
identifier.id = id;
return(identifier);
}
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{
String_Const_u8 name = SCu8(identifier.name, identifier.name_len);
get_buffer_by_name(app, name, AccessAll, &id);
if (id == 0){
get_buffer_by_file_name(app, name, AccessAll, &id);
}
}
return(id);
}
static Buffer_ID
buffer_identifier_to_id_create_out_buffer(Application_Links *app, Buffer_Identifier buffer_id){
Buffer_ID result = 0;
if (buffer_id.name != 0 && buffer_id.name_len > 0){
String_Const_u8 buffer_name = SCu8(buffer_id.name, buffer_id.name_len);
Buffer_ID buffer_attach_id = 0;
if (get_buffer_by_name(app, buffer_name, AccessAll, &buffer_attach_id)){
result = buffer_attach_id;
}
else{
if (create_buffer(app, buffer_name, BufferCreate_AlwaysNew|BufferCreate_NeverAttachToFile, &buffer_attach_id)){
buffer_set_setting(app, buffer_attach_id, BufferSetting_ReadOnly, true);
buffer_set_setting(app, buffer_attach_id, BufferSetting_Unimportant, true);
result = buffer_attach_id;
}
}
}
else{
result = buffer_id.id;
}
return(result);
}
////////////////////////////////
static void
adjust_all_buffer_wrap_widths(Application_Links *app, i32 wrap_width, i32 min_base_width){
Buffer_ID buffer = 0;
for (get_buffer_next(app, 0, AccessAll, &buffer);
buffer != 0;
get_buffer_next(app, buffer, AccessAll, &buffer)){
buffer_set_setting(app, buffer, BufferSetting_WrapPosition, wrap_width);
buffer_set_setting(app, buffer, BufferSetting_MinimumBaseWrapPosition, min_base_width);
}
}
static View_ID
open_view(Application_Links *app, View_ID view_location, View_Split_Position position){
View_ID result = 0;
if (view_location != 0 && view_exists(app, view_location)){
Panel_ID panel_id = 0;
if (view_get_panel(app, view_location, &panel_id)){
b32 vertical = (position == ViewSplit_Left || position == ViewSplit_Right);
if (panel_split(app, panel_id, vertical?PanelSplit_LeftAndRight:PanelSplit_TopAndBottom)){
Panel_ID new_panel_id = 0;
Panel_Child child = (position == ViewSplit_Left || position == ViewSplit_Top)?PanelChild_Min:PanelChild_Max;
if (panel_get_child(app, panel_id, child, &new_panel_id)){
View_ID new_view_id = 0;
if (panel_get_view(app, new_panel_id, &new_view_id)){
result = new_view_id;
}
}
}
}
}
return(result);
}
static View_ID
get_first_view_with_buffer(Application_Links *app, Buffer_ID buffer_id){
View_ID result = {};
View_ID test = {};
if (buffer_id != 0){
for (get_view_next(app, 0, AccessAll, &test);
test != 0;
get_view_next(app, test, AccessAll, &test)){
Buffer_ID test_buffer = 0;
view_get_buffer(app, test, AccessAll, &test_buffer);
if (test_buffer == buffer_id){
result = test;
break;
}
}
}
return(result);
}
static b32
open_file(Application_Links *app, Buffer_ID *buffer_out, String_Const_u8 file_name, b32 background, b32 never_new){
b32 result = false;
Buffer_ID buffer = 0;
get_buffer_by_name(app, file_name, AccessProtected, &buffer);
b32 exists = buffer_exists(app, buffer);
if (!exists){
Buffer_Create_Flag flags = 0;
if (background){
flags |= BufferCreate_Background;
}
if (never_new){
flags |= BufferCreate_NeverNew;
}
create_buffer(app, file_name, flags, &buffer);
exists = buffer_exists(app, buffer);
}
if (exists){
if (buffer_out != 0){
*buffer_out = buffer;
}
result = true;
}
return(result);
}
static b32
view_open_file(Application_Links *app, View_ID view, String_Const_u8 file_name, b32 never_new){
b32 result = false;
if (view != 0){
Buffer_ID buffer = 0;
if (open_file(app, &buffer, file_name, false, never_new)){
view_set_buffer(app, view, buffer, 0);
result = true;
}
}
return(result);
}
////////////////////////////////
static View_ID
get_next_view_looped_all_panels(Application_Links *app, View_ID view_id, Access_Flag access){
if (!get_view_next(app, view_id, access, &view_id)){
if (!get_view_next(app, 0, access, &view_id)){
view_id = 0;
}
}
return(view_id);
}
static View_ID
get_prev_view_looped_all_panels(Application_Links *app, View_ID view_id, Access_Flag access){
if (!get_view_prev(app, view_id, access, &view_id)){
if (!get_view_prev(app, 0, access, &view_id)){
view_id = 0;
}
}
return(view_id);
}
////////////////////////////////
static Buffer_Kill_Result
kill_buffer(Application_Links *app, Buffer_Identifier identifier, View_ID gui_view_id, Buffer_Kill_Flag flags){
Buffer_ID buffer = buffer_identifier_to_id(app, identifier);
Buffer_Kill_Result result = 0;
buffer_kill(app, buffer, flags, &result);
if (result == BufferKillResult_Dirty){
do_gui_sure_to_kill(app, buffer, gui_view_id);
}
return(result);
}
////////////////////////////////
static void
clear_buffer(Application_Links *app, Buffer_ID buffer_id){
i32 buffer_size = 0;
buffer_get_size(app, buffer_id, &buffer_size);
buffer_replace_range(app, buffer_id, make_range(0, buffer_size), string_u8_litexpr(""));
}
////////////////////////////////
static b32
init_stream_chunk(Stream_Chunk *chunk, Application_Links *app, Buffer_ID buffer_id,
i32 pos, char *data, u32 size){
b32 result = false;
i32 buffer_size = 0;
buffer_get_size(app, buffer_id, &buffer_size);
if (0 <= pos && pos < buffer_size && size > 0){
chunk->app = app;
chunk->buffer_id = buffer_id;
chunk->base_data = data;
chunk->data_size = size;
chunk->start = round_down_i32(pos, size);
chunk->end = round_up_i32(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_id, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
result = true;
}
}
return(result);
}
static b32
forward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_ID buffer_id = chunk->buffer_id;
b32 result = 0;
i32 buffer_size = 0;
buffer_get_size(app, buffer_id, &buffer_size);
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_id, 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 b32
backward_stream_chunk(Stream_Chunk *chunk){
Application_Links *app = chunk->app;
Buffer_ID buffer_id = chunk->buffer_id;
b32 result = false;
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_id, chunk->start, chunk->end, chunk->base_data);
chunk->data = chunk->base_data - chunk->start;
result = true;
}
}
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 = true;
}
return(result);
}
////////////////////////////////
static b32
init_stream_tokens(Stream_Tokens_DEP *stream, Application_Links *app, Buffer_ID buffer_id, i32 pos, Cpp_Token *data, i32 count){
b32 result = false;
i32 token_count = 0;
buffer_token_count(app, buffer_id, &token_count);
if (buffer_tokens_are_ready(app, buffer_id) && pos >= 0 && pos < token_count && count > 0){
stream->app = app;
stream->buffer_id = buffer_id;
stream->base_tokens = data;
stream->count = count;
stream->start = round_down_i32(pos, count);
stream->end = round_up_i32(pos, count);
stream->token_count = token_count;
stream->start = clamp_bot(0, stream->start);
stream->end = clamp_top(stream->end, stream->token_count);
buffer_read_tokens(app, buffer_id, 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_id, temp.start, temp.end, temp.base_tokens);
stream->tokens = stream->base_tokens - temp.start;
stream->start = temp.start;
stream->end = temp.end;
}
}
static b32
forward_stream_tokens(Stream_Tokens_DEP *stream){
Application_Links *app = stream->app;
Buffer_ID buffer_id = stream->buffer_id;
b32 result = false;
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_id, stream->start, stream->end, stream->base_tokens);
stream->tokens = stream->base_tokens - stream->start;
result = true;
}
}
return(result);
}
static b32
backward_stream_tokens(Stream_Tokens_DEP *stream){
Application_Links *app = stream->app;
Buffer_ID buffer_id = stream->buffer_id;
b32 result = false;
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_id, 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){
Token_Range range = {};
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, i32 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 i32
token_iterator_current_index(Token_Iterator *iterator){
i32 index = -1;
Cpp_Token *token = token_iterator_current(iterator);
if (token != 0 && iterator->range.first <= token && token <= iterator->range.one_past_last){
index = (i32)(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_Const_u8
get_query_string(Application_Links *app, char *query_str, char *string_space, i32 space_size){
Query_Bar bar;
bar.prompt = SCu8((u8*)query_str);
bar.string = SCu8((u8*)string_space, (umem)0);
bar.string_capacity = space_size;
if (!query_user_string(app, &bar)){
bar.string.size = 0;
}
return(bar.string);
}
static String_Const_u8
get_token_or_word_under_pos(Application_Links *app, Arena *arena, Buffer_ID buffer, umem pos){
String_Const_u8 result = {};
Cpp_Get_Token_Result get_result = {};
b32 success = buffer_get_token_index(app, buffer, (i32)pos, &get_result);
if (success && !get_result.in_whitespace_after_token){
umem size = get_result.token_one_past_last - get_result.token_start;
if (0 < size){
result = push_buffer_range(app, arena, buffer, get_result.token_start, get_result.token_one_past_last);
}
}
return(result);
}
static b32
lexer_keywords_default_init(Arena *arena, Cpp_Keyword_Table *kw_out, Cpp_Keyword_Table *pp_out){
b32 success = false;
umem kw_size = cpp_get_table_memory_size_default(CPP_TABLE_KEYWORDS);
umem pp_size = cpp_get_table_memory_size_default(CPP_TABLE_PREPROCESSOR_DIRECTIVES);
void *kw_mem = push_array(arena, char, kw_size);
void *pp_mem = push_array(arena, char, 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 b32
file_exists(Application_Links *app, String_Const_u8 file_name){
File_Attributes attributes = {};
file_get_attributes(app, file_name, &attributes);
return(attributes.last_write_time > 0);
}
static b32
file_exists_and_is_file(Application_Links *app, String_Const_u8 file_name){
File_Attributes attributes = {};
file_get_attributes(app, file_name, &attributes);
return(attributes.last_write_time > 0 &&
!HasFlag(attributes.flags, FileAttribute_IsDirectory));
}
static b32
file_exists_and_is_folder(Application_Links *app, String_Const_u8 file_name){
File_Attributes attributes = {};
file_get_attributes(app, file_name, &attributes);
return(attributes.last_write_time > 0 &&
HasFlag(attributes.flags, FileAttribute_IsDirectory));
}
static Data
dump_file_handle(Arena *arena, FILE *file){
Data result = {};
if (file != 0){
fseek(file, 0, SEEK_END);
umem size = ftell(file);
char *mem = push_array(arena, char, size);
if (mem != 0){
fseek(file, 0, SEEK_SET);
fread(mem, 1, size, file);
result = make_data(mem, size);
}
}
return(result);
}
static String_Const_u8
push_file_search_up_path(Application_Links *app, Arena *arena, String_Const_u8 start_path, String_Const_u8 file_name){
String_Const_u8 result = {};
String_Const_u8 path = start_path;
for (;path.size > 0;){
Temp_Memory temp = begin_temp(arena);
if (character_is_slash(string_get_character(path, path.size - 1))){
path = string_chop(path, 1);
}
String_Const_u8 full_path = string_u8_pushf(arena, "%.*s/%.*s",
string_expand(path),
string_expand(file_name));
if (file_exists(app, full_path)){
result = full_path;
break;
}
path = string_remove_last_folder(path);
end_temp(temp);
}
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){
Scratch_Block scratch(app);
List_String_Const_u8 list = {};
string_list_push(scratch, &list, push_4ed_path(app, scratch));
string_list_push_overlap(scratch, &list, '/', SCu8(file_name));
String_Const_u8 str = string_list_flatten(scratch, list, StringFill_NullTerminate);
file = fopen((char*)str.str, "rb");
}
return(file);
}
static FILE*
open_file(Arena *scratch, String_Const_u8 name){
Temp_Memory temp = begin_temp(scratch);
String_Const_u8 name_copy = string_copy(scratch, name);
FILE *file = fopen((char*)name_copy.str, "rb");
end_temp(temp);
return(file);
}
static File_Name_Data
dump_file(Arena *arena, String_Const_u8 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_Data
dump_file_search_up_path(Application_Links *app, Arena *arena, String_Const_u8 path, String_Const_u8 file_name){
File_Name_Data result = {};
String_Const_u8 full_path = push_file_search_up_path(app, arena, path, file_name);
if (full_path.size > 0){
result = dump_file(arena, full_path);
}
return(result);
}
static void
sort_pairs_by_key__quick(Sort_Pair_i32 *pairs, i32 first, i32 one_past_last){
i32 dif = one_past_last - first;
if (dif >= 2){
i32 pivot = one_past_last - 1;
Sort_Pair_i32 pivot_pair = pairs[pivot];
i32 j = first;
b32 interleave = false;
for (i32 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, i32 count){
sort_pairs_by_key__quick(pairs, 0, count);
}
static Range_Array
get_ranges_of_duplicate_keys(Arena *arena, i32 *keys, i32 stride, i32 count){
Range_Array result = {};
result.ranges = push_array(arena, Range, count);
u8 *ptr = (u8*)keys;
i32 start_i = 0;
for (i32 i = 1; i <= count; i += 1){
b32 is_end = false;
if (i == count){
is_end = true;
}
else if (*(i32*)(ptr + i*stride) != *(i32*)(ptr + start_i*stride)){
is_end = true;
}
if (is_end){
Range *new_range = &result.ranges[result.count++];
new_range->first = start_i;
new_range->one_past_last = i;
start_i = i;
}
}
pop_array(arena, Range, count - result.count);
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 = 0;
view_get_managed_scope(app, view_id, &scope);
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 b32
view_has_highlighted_range(Application_Links *app, View_ID view_id){
b32 result = false;
if (fcoder_mode == FCoderMode_NotepadLike){
i32 pos = 0;
i32 mark = 0;
view_get_cursor_pos(app, view_id, &pos);
view_get_mark_pos(app, view_id, &mark);
result = (pos != mark);
}
return(result);
}
static b32
if_view_has_highlighted_range_delete_range(Application_Links *app, View_ID view_id){
b32 result = false;
if (view_has_highlighted_range(app, view_id)){
Range range = get_view_range(app, view_id);
Buffer_ID buffer = 0;
view_get_buffer(app, view_id, AccessOpen, &buffer);
buffer_replace_range(app, buffer, range, string_u8_litexpr(""));
result = true;
}
return(result);
}
static void
begin_notepad_mode(Application_Links *app){
fcoder_mode = FCoderMode_NotepadLike;
View_ID view = 0;
for (get_view_next(app, 0, AccessAll, &view);
view != 0;
get_view_next(app, view, AccessAll, &view)){
i32 pos = 0;
view_get_cursor_pos(app, view, &pos);
view_set_mark(app, view, seek_pos(pos));
}
}
////////////////////////////////
typedef i32 View_Split_Kind;
enum{
ViewSplitKind_Ratio,
ViewSplitKind_FixedPixels,
};
static b32
view_set_split(Application_Links *app, View_ID view, View_Split_Kind kind, f32 t){
b32 result = false;
if (view != 0){
Panel_ID panel_id = 0;
if (view_get_panel(app, view, &panel_id)){
Panel_ID parent_panel_id = 0;
if (panel_get_parent(app, panel_id, &parent_panel_id)){
Panel_ID min_child_id = 0;
if (panel_get_child(app, parent_panel_id, PanelChild_Min, &min_child_id)){
b32 panel_is_min = (min_child_id == panel_id);
Panel_Split_Kind panel_kind = ((kind == ViewSplitKind_Ratio)?
(panel_is_min?PanelSplitKind_Ratio_Min:PanelSplitKind_Ratio_Max):
(panel_is_min?PanelSplitKind_FixedPixels_Min:PanelSplitKind_FixedPixels_Max));
result = panel_set_split(app, parent_panel_id, panel_kind, t);
}
}
}
}
return(result);
}
static b32
view_set_split_proportion(Application_Links *app, View_ID view, f32 t){
return(view_set_split(app, view, ViewSplitKind_Ratio, t));
}
static b32
view_set_split_pixel_size(Application_Links *app, View_ID view, i32 t){
return(view_set_split(app, view, ViewSplitKind_FixedPixels, (f32)t));
}
////////////////////////////////
static Record_Info
get_single_record(Application_Links *app, Buffer_ID buffer_id, History_Record_Index index){
Record_Info record = {};
buffer_history_get_record_info(app, buffer_id, index, &record);
if (record.error == RecordError_NoError && record.kind == RecordKind_Group){
buffer_history_get_group_sub_record(app, buffer_id, index, record.group.count - 1, &record);
}
return(record);
}
////////////////////////////////
static Vec2
draw_string(Application_Links *app, Face_ID font_id, String_Const_u8 string, Vec2 p, int_color color){
return(draw_string(app, font_id, string, p, color, 0, V2(1.f, 0.f)));
}
static void
draw_margin(Application_Links *app, f32_Rect outer, f32_Rect inner, int_color color){
draw_rectangle(app, f32R(outer.x0, outer.y0, outer.x1, inner.y0), color);
draw_rectangle(app, f32R(outer.x0, inner.y1, outer.x1, outer.y1), color);
draw_rectangle(app, f32R(outer.x0, inner.y0, inner.x0, inner.y1), color);
draw_rectangle(app, f32R(inner.x1, inner.y0, outer.x1, inner.y1), color);
}
////////////////////////////////
static f32_Rect_Pair
split_rect(f32_Rect rect, View_Split_Kind kind, Coordinate coord, Side from_side, f32 t){
f32_Rect_Pair result = {};
if (kind == ViewSplitKind_FixedPixels){
result.E[0] = rect;
result.E[1] = rect;
if (coord == Coordinate_X){
result.E[0].x1 = (from_side == Side_Max) ? (rect.x1 - t) : (rect.x0 + t);
result.E[1].x0 = result.E[0].x1;
}
else{
Assert(coord == Coordinate_Y);
result.E[0].y1 = (from_side == Side_Max) ? (rect.y1 - t) : (rect.y0 + t);
result.E[1].y0 = result.E[0].y1;
}
}
else{
Assert(kind == ViewSplitKind_Ratio);
f32 pixel_count;
if (coord == Coordinate_X){
pixel_count = t*(rect.x1 - rect.x0);
}
else{
Assert(coord == Coordinate_Y);
pixel_count = t*(rect.y1 - rect.y0);
}
result = split_rect(rect, ViewSplitKind_FixedPixels, coord, from_side, pixel_count);
}
return(result);
}
////////////////////////////////
static f32
get_dpi_scaling_value(Application_Links *app){
// TODO(casey): Allen, this should return the multiplier for the display relative to whatever 4coder
// gets tuned to.
f32 result = 2.0f;
return(result);
}
////////////////////////////////
static History_Group
begin_history_group(Application_Links *app, Buffer_ID buffer){
History_Group group = {};
group.app = app;
group.buffer = buffer;
buffer_history_get_current_state_index(app, buffer, &group.first);
group.first += 1;
return(group);
}
static void
end_history_group(History_Group group){
History_Record_Index last = 0;
buffer_history_get_current_state_index(group.app, group.buffer, &last);
if (group.first < last){
buffer_history_merge_record_range(group.app, group.buffer, group.first, last, RecordMergeFlag_StateInRange_MoveStateForward);
}
}
////////////////////////////////
// TODO(allen): REWRITE THIS EXACTLY HOW YOU WANT IT --- start ---
static Child_Process_Set_Target_Flags
flags_system_command(Command_Line_Interface_Flag flags){
Child_Process_Set_Target_Flags set_buffer_flags = 0;
if (!HasFlag(flags, CLI_OverlapWithConflict)){
set_buffer_flags |= ChildProcessSet_FailIfBufferAlreadyAttachedToAProcess;
}
if (HasFlag(flags, CLI_CursorAtEnd)){
set_buffer_flags |= ChildProcessSet_CursorAtEnd;
}
return(set_buffer_flags);
}
static b32
set_buffer_system_command(Application_Links *app, Child_Process_ID process, Buffer_ID buffer, Command_Line_Interface_Flag flags){
b32 result = false;
Child_Process_Set_Target_Flags set_buffer_flags = flags_system_command(flags);
if (child_process_set_target_buffer(app, process, buffer, set_buffer_flags)){
i32 buffer_size = 0;
buffer_get_size(app, buffer, &buffer_size);
buffer_replace_range(app, buffer, make_range(0, buffer_size), string_u8_litexpr(""));
if (HasFlag(flags, CLI_SendEndSignal)){
buffer_send_end_signal(app, buffer);
}
result = true;
}
return(result);
}
static b32
exec_system_command(Application_Links *app, View_ID view, Buffer_Identifier buffer_id,
String_Const_u8 path, String_Const_u8 command, Command_Line_Interface_Flag flags){
b32 result = false;
Child_Process_ID child_process_id = 0;
if (create_child_process(app, path, command, &child_process_id)){
result = true;
Buffer_ID buffer_attach_id = buffer_identifier_to_id_create_out_buffer(app, buffer_id);
if (buffer_attach_id != 0){
if (set_buffer_system_command(app, child_process_id, buffer_attach_id, flags)){
if (view != 0){
view_set_buffer(app, view, buffer_attach_id, 0);
}
}
}
}
return(result);
}
// TODO(allen): --- end ---
// BOTTOM