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4coder/power/4coder_experiments.cpp

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/*
4coder_experiments.cpp - Supplies extension bindings to the defaults with experimental new features.
TYPE: 'build-target'
*/
// TOP
#if !defined(FCODER_EXPERIMENTS_CPP)
#define FCODER_EXPERIMENTS_CPP
#define FCODER_JUMP_COMMANDS
#include "4coder_default_include.cpp"
#include "4coder_miblo_numbers.cpp"
#undef FCODER_JUMP_COMMANDS
#include "4coder_sticky_jump.cpp"
#define NO_BINDING
#include "4coder_default_bindings.cpp"
#ifndef BIND_4CODER_TESTS
# define BIND_4CODER_TESTS(context) ((void)context)
#endif
#include <assert.h>
#include <string.h>
static float
get_line_y(Application_Links *app, View_Summary *view, int32_t line){
Full_Cursor cursor = {0};
view_compute_cursor(app, view, seek_line_char(line, 1), &cursor);
float y = cursor.wrapped_y;
if (view->unwrapped_lines){
y = cursor.unwrapped_y;
}
return(y);
}
CUSTOM_COMMAND_SIG(kill_rect){
View_Summary view = get_active_view(app, AccessOpen);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, AccessOpen);
i32_Rect rect = get_line_x_rect(&view);
bool32 unwrapped = view.unwrapped_lines;
for (int32_t line = rect.y1; line >= rect.y0; --line){
int32_t start = 0;
int32_t end = 0;
bool32 success = 1;
Full_Cursor cursor = {0};
float y = get_line_y(app, &view, line);
if (success){
success = view_compute_cursor(app, &view, seek_xy((float)rect.x0, y, 0, unwrapped), &cursor);
}
start = cursor.pos;
if (success){
success = view_compute_cursor(app, &view, seek_xy((float)rect.x1, y, 0, unwrapped), &cursor);
}
end = cursor.pos;
if (success){
buffer_replace_range(app, &buffer, start, end, 0, 0);
}
}
}
static void
pad_buffer_line(Application_Links *app, Partition *part, Buffer_Summary *buffer, int32_t line, char padchar, int32_t target){
Partial_Cursor start = {0};
Partial_Cursor end = {0};
if (buffer_compute_cursor(app, buffer, seek_line_char(line, 1), &start)){
if (buffer_compute_cursor(app, buffer, seek_line_char(line, 65536), &end)){
if (start.line == line){
if (end.character-1 < target){
Temp_Memory temp = begin_temp_memory(part);
int32_t size = target - (end.character-1);
char *str = push_array(part, char, size);
memset(str, ' ', size);
buffer_replace_range(app, buffer, end.pos, end.pos, str, size);
end_temp_memory(temp);
}
}
}
}
}
/*
NOTE(allen): Things I learned from this experiment.
First of all the batch edits aren't too bad, but I think
there could be a single system that I run that through that
knows how to build the batch edit from slightly higher level
information. For instance the idea in point 2.
Secondly I definitely believe I need some sort of "mini-buffer"
concept where a view sends commands so that things like
pasting still work. Then the contents of the "mini-buffer"
can be used to complete the edits at all cursor points.
This doesn't answer all questions, because somehow backspace
still wants to work for multi-lines even when the "mini-buffer"
is emtpy. Such a system would also make it possible to send
paste commands and cursor navigation to interactive bars.
Thirdly any system like this will probably not want to
operate through the co-routine system, because that makes
sending these commands to the "mini-buffer" much more
difficult.
Fourthly I desperately need some way to do multi-highlighting
multi-cursor showing but it is unclear to me how to do that
conveniently. Since this won't exist inside a coroutine
what does such an API even look like??? It's clear to me now
that I may need to start pushing for the view routine before
I am even able to support the GUI. Because that will set up the
system to allow me to think about the problem in more ways.
Finally I have decided not to pursue this direction any more,
it just seems like the wrong way to do it, so I'll stop without
doing multi-cursor for now.
*/
CUSTOM_COMMAND_SIG(multi_line_edit){
Partition *part = &global_part;
View_Summary view = get_active_view(app, AccessOpen);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, AccessOpen);
Buffer_Rect rect = get_rect(&view);
int32_t start_line = view.cursor.line;
int32_t pos = view.cursor.character-1;
for (int32_t i = rect.line0; i <= rect.line1; ++i){
pad_buffer_line(app, &global_part, &buffer, i, ' ', pos);
}
int32_t line_count = rect.line1 - rect.line0 + 1;
for (;;){
User_Input in = get_user_input(app, EventOnAnyKey, EventOnEsc | EventOnButton);
if (in.abort) break;
if (in.key.character && key_is_unmodified(&in.key)){
char str = (char)in.key.character;
Temp_Memory temp = begin_temp_memory(part);
Buffer_Edit *edit = push_array(part, Buffer_Edit, line_count);
Buffer_Edit *edits = edit;
for (int32_t i = rect.line0; i <= rect.line1; ++i){
Partial_Cursor cursor = {0};
if (buffer_compute_cursor(app, &buffer, seek_line_char(i, pos+1), &cursor)){
edit->str_start = 0;
edit->len = 1;
edit->start = cursor.pos;
edit->end = cursor.pos;
++edit;
}
}
int32_t edit_count = (int)(edit - edits);
buffer_batch_edit(app, &buffer, &str, 1, edits, edit_count, BatchEdit_Normal);
end_temp_memory(temp);
++pos;
view_set_cursor(app, &view, seek_line_char(start_line, pos+1), true);
}
else if (in.key.keycode == key_back){
if (pos > 0){
Temp_Memory temp = begin_temp_memory(part);
Buffer_Edit *edit = push_array(part, Buffer_Edit, line_count);
Buffer_Edit *edits = edit;
for (int32_t i = rect.line0; i <= rect.line1; ++i){
Partial_Cursor cursor = {0};
if (buffer_compute_cursor(app, &buffer, seek_line_char(i, pos+1), &cursor)){
edit->str_start = 0;
edit->len = 0;
edit->start = cursor.pos-1;
edit->end = cursor.pos;
++edit;
}
}
int32_t edit_count = (int)(edit - edits);
buffer_batch_edit(app, &buffer, 0, 0, edits, edit_count, BatchEdit_Normal);
end_temp_memory(temp);
--pos;
}
}
else{
break;
}
}
}
//
// Scope-Smart Editing Basics
//
enum{
FindScope_Parent = 0x1,
FindScope_NextSibling = 0x1,
FindScope_EndOfToken = 0x2,
};
static bool32
find_scope_top(Application_Links *app, Buffer_Summary *buffer, int32_t start_pos, uint32_t flags, int32_t *end_pos_out){
Cpp_Get_Token_Result get_result = {0};
bool32 success = 0;
int32_t position = 0;
if (buffer_get_token_index(app, buffer, start_pos, &get_result)){
int32_t token_index = get_result.token_index;
if (flags & FindScope_Parent){
--token_index;
if (get_result.in_whitespace){
++token_index;
}
}
if (token_index >= 0){
static const int32_t chunk_cap = 512;
Cpp_Token chunk[chunk_cap];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, buffer, token_index, chunk, chunk_cap)){int32_t nest_level = 0;
bool32 still_looping = 0;
do{
for (; token_index >= stream.start; --token_index){
Cpp_Token *token = &stream.tokens[token_index];
switch (token->type){
case CPP_TOKEN_BRACE_OPEN:
{
if (nest_level == 0){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
else{
--nest_level;
}
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
++nest_level;
}break;
}
}
still_looping = backward_stream_tokens(&stream);
}while(still_looping);
}
}
}
finished:;
*end_pos_out = position;
return(success);
}
static bool32
find_scope_bottom(Application_Links *app, Buffer_Summary *buffer, int32_t start_pos, uint32_t flags, int32_t *end_pos_out){
Cpp_Get_Token_Result get_result = {0};
bool32 success = 0;
int32_t position = 0;
if (buffer_get_token_index(app, buffer, start_pos, &get_result)){
int32_t token_index = get_result.token_index+1;
if (flags & FindScope_Parent){
--token_index;
if (get_result.in_whitespace){
++token_index;
}
}
if (token_index >= 0){
static const int32_t chunk_cap = 512;
Cpp_Token chunk[chunk_cap];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, buffer, token_index, chunk, chunk_cap)){
int32_t nest_level = 0;
bool32 still_looping = 0;
do{
for (; token_index < stream.end; ++token_index){
Cpp_Token *token = &stream.tokens[token_index];
switch (token->type){
case CPP_TOKEN_BRACE_OPEN:
{
++nest_level;
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
if (nest_level == 0){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
else{
--nest_level;
}
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
}
}
}
finished:;
*end_pos_out = position;
return(success);
}
static bool32
find_next_scope(Application_Links *app, Buffer_Summary *buffer, int32_t start_pos, uint32_t flags, int32_t *end_pos_out){
Cpp_Get_Token_Result get_result = {0};
bool32 success = 0;
int32_t position = 0;
if (buffer_get_token_index(app, buffer, start_pos, &get_result)){
int32_t token_index = get_result.token_index+1;
if (token_index >= 0){
static const int32_t chunk_cap = 512;
Cpp_Token chunk[chunk_cap];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, buffer, token_index, chunk, chunk_cap)){
if (flags & FindScope_NextSibling){
int32_t nest_level = 1;
bool32 still_looping = 0;
do{
for (; token_index < stream.end; ++token_index){
Cpp_Token *token = &stream.tokens[token_index];
switch (token->type){
case CPP_TOKEN_BRACE_OPEN:
{
if (nest_level == 0){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
else{
++nest_level;
}
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
--nest_level;
if (nest_level == -1){
position = start_pos;
goto finished;
}
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
}
else{
bool32 still_looping = 0;
do{
for (; token_index < stream.end; ++token_index){
Cpp_Token *token = &stream.tokens[token_index];
if (token->type == CPP_TOKEN_BRACE_OPEN){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
}
}
}
}
finished:;
*end_pos_out = position;
return(success);
}
static bool32
find_prev_scope(Application_Links *app, Buffer_Summary *buffer, int32_t start_pos, uint32_t flags, int32_t *end_pos_out){
Cpp_Get_Token_Result get_result = {0};
bool32 success = 0;
int32_t position = 0;
if (buffer_get_token_index(app, buffer, start_pos, &get_result)){
int32_t token_index = get_result.token_index-1;
if (token_index >= 0){
static const int32_t chunk_cap = 512;
Cpp_Token chunk[chunk_cap];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, buffer, token_index, chunk, chunk_cap)){
if (flags & FindScope_NextSibling){
int32_t nest_level = -1;
bool32 still_looping = 0;
do{
for (; token_index >= stream.start; --token_index){
Cpp_Token *token = &stream.tokens[token_index];
switch (token->type){
case CPP_TOKEN_BRACE_OPEN:
{
if (nest_level == -1){
position = start_pos;
goto finished;
}
else if (nest_level == 0){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
else{
--nest_level;
}
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
++nest_level;
}break;
}
}
still_looping = backward_stream_tokens(&stream);
}while(still_looping);
}
else{
bool32 still_looping = 0;
do{
for (; token_index >= stream.start; --token_index){
Cpp_Token *token = &stream.tokens[token_index];
if (token->type == CPP_TOKEN_BRACE_OPEN){
success = 1;
position = token->start;
if (flags & FindScope_EndOfToken){
position += token->size;
}
goto finished;
}
}
still_looping = backward_stream_tokens(&stream);
}while(still_looping);
}
}
}
}
finished:;
*end_pos_out = position;
return(success);
}
static void
view_set_to_region(Application_Links *app, View_Summary *view, int32_t major_pos, int32_t minor_pos, float normalized_threshold){
Range range = make_range(major_pos, minor_pos);
bool32 bottom_major = false;
if (major_pos == range.max){
bottom_major = true;
}
Full_Cursor top, bottom;
if (view_compute_cursor(app, view, seek_pos(range.min), &top)){
if (view_compute_cursor(app, view, seek_pos(range.max), &bottom)){
float top_y = top.wrapped_y;
float bottom_y = bottom.wrapped_y;
if (view->unwrapped_lines){
top_y = top.unwrapped_y;
bottom_y = bottom.unwrapped_y;
}
GUI_Scroll_Vars scroll = view->scroll_vars;
float half_view_height = .5f*(float)(view->file_region.y1 - view->file_region.y0);
float threshold = normalized_threshold * half_view_height;
float current_center_y = ((float)scroll.target_y) + half_view_height;
if (top_y < current_center_y - threshold || bottom_y > current_center_y + threshold){
float center_target_y = .5f*(top_y + bottom_y);
if (bottom_major){
if (center_target_y < bottom_y - half_view_height * .9f){
center_target_y = bottom_y - half_view_height * .9f;
}
}
else{
if (center_target_y > top_y + half_view_height * .9f){
center_target_y = top_y + half_view_height * .9f;
}
}
float target_y = center_target_y - half_view_height;
if (target_y < 0){
target_y = 0;
}
scroll.target_y = (int32_t)(target_y);
view_set_scroll(app, view, scroll);
}
}
}
}
static float scope_center_threshold = 0.75f;
CUSTOM_COMMAND_SIG(highlight_surrounding_scope){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_scope_top(app, &buffer, start_pos, FindScope_Parent, &top)){
view_set_cursor(app, &view, seek_pos(top), true);
if (find_scope_bottom(app, &buffer, start_pos, FindScope_Parent | FindScope_EndOfToken, &bottom)){
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
else{
view_set_to_region(app, &view, top, top, scope_center_threshold);
}
}
}
// TODO(allen): These aren't super top notch yet (the ones about children and siblings). I am not sure I want them around anyway, because it's not that fluid feeling even when it works.
CUSTOM_COMMAND_SIG(highlight_first_child_scope){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_next_scope(app, &buffer, start_pos, 0, &top)){
if (find_scope_bottom(app, &buffer, top, FindScope_EndOfToken, &bottom)){
view_set_cursor(app, &view, seek_pos(top), true);
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
}
}
CUSTOM_COMMAND_SIG(highlight_next_sibling_scope){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_next_scope(app, &buffer, start_pos, FindScope_NextSibling, &top)){
if (find_scope_bottom(app, &buffer, top, FindScope_EndOfToken, &bottom)){
view_set_cursor(app, &view, seek_pos(top), true);
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
}
}
CUSTOM_COMMAND_SIG(highlight_prev_sibling_scope){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_prev_scope(app, &buffer, start_pos, FindScope_NextSibling, &top)){
if (find_scope_bottom(app, &buffer, top, FindScope_EndOfToken, &bottom)){
view_set_cursor(app, &view, seek_pos(top), true);
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
}
}
CUSTOM_COMMAND_SIG(highlight_next_scope_absolute){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_next_scope(app, &buffer, start_pos, 0, &top)){
if (find_scope_bottom(app, &buffer, top, FindScope_EndOfToken, &bottom)){
view_set_cursor(app, &view, seek_pos(top), true);
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
}
}
CUSTOM_COMMAND_SIG(highlight_prev_scope_absolute){
uint32_t access = AccessProtected;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t start_pos = view.cursor.pos;
int32_t top = 0, bottom = 0;
if (find_prev_scope(app, &buffer, start_pos, 0, &top)){
if (find_scope_bottom(app, &buffer, top, FindScope_EndOfToken, &bottom)){
view_set_cursor(app, &view, seek_pos(top), true);
view_set_mark(app, &view, seek_pos(bottom));
view_set_to_region(app, &view, top, bottom, scope_center_threshold);
}
}
}
CUSTOM_COMMAND_SIG(place_in_scope){
uint32_t access = AccessOpen;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
Range lines;
Range range = get_range(&view);
lines.min = buffer_get_line_index(app, &buffer, range.min);
range.min = buffer_get_line_start(app, &buffer, lines.min);
lines.max = buffer_get_line_index(app, &buffer, range.max);
range.max = buffer_get_line_end(app, &buffer, lines.max);
bool32 do_full = false;
if (lines.min < lines.max){
do_full = true;
}
else if (!buffer_line_is_blank(app, &buffer, lines.min)){
do_full = true;
}
if (do_full){
Buffer_Edit edits[2];
char str[5] = "{\n\n}";
int32_t min_adjustment = 0;
int32_t max_adjustment = 4;
if (buffer_line_is_blank(app, &buffer, lines.min)){
str[0] = '\n';
str[1] = '{';
++min_adjustment;
}
if (buffer_line_is_blank(app, &buffer, lines.max)){
str[2] = '}';
str[3] = '\n';
--max_adjustment;
}
int32_t min_pos = range.min + min_adjustment;
int32_t max_pos = range.max + max_adjustment;
int32_t cursor_pos = min_pos;
int32_t mark_pos = max_pos;
if (view.cursor.pos > view.mark.pos){
cursor_pos = max_pos;
mark_pos = min_pos;
}
edits[0].str_start = 0;
edits[0].len = 2;
edits[0].start = range.min;
edits[0].end = range.min;
edits[1].str_start = 2;
edits[1].len = 2;
edits[1].start = range.max;
edits[1].end = range.max;
buffer_batch_edit(app, &buffer, str, 4, edits, 2, BatchEdit_Normal);
view_set_cursor(app, &view, seek_pos(cursor_pos), true);
view_set_mark(app, &view, seek_pos(mark_pos));
}
else{
buffer_replace_range(app, &buffer, range.min, range.max, "{\n\n}", 4);
view_set_cursor(app, &view, seek_pos(range.min + 2), true);
view_set_mark(app, &view, seek_pos(range.min + 2));
}
}
CUSTOM_COMMAND_SIG(delete_current_scope){
uint32_t access = AccessOpen;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t top = view.cursor.pos;
int32_t bottom = view.mark.pos;
if (top > bottom){
int32_t x = top;
top = bottom;
bottom = x;
}
if (buffer_get_char(app, &buffer, top) == '{' && buffer_get_char(app, &buffer, bottom-1) == '}'){
int32_t top_len = 1;
int32_t bottom_len = 1;
if (buffer_get_char(app, &buffer, top-1) == '\n'){
top_len = 2;
}
if (buffer_get_char(app, &buffer, bottom+1) == '\n'){
bottom_len = 2;
}
Buffer_Edit edits[2];
edits[0].str_start = 0;
edits[0].len = 0;
edits[0].start = top+1 - top_len;
edits[0].end = top+1;
edits[1].str_start = 0;
edits[1].len = 0;
edits[1].start = bottom-1;
edits[1].end = bottom-1 + bottom_len;
buffer_batch_edit(app, &buffer, 0, 0, edits, 2, BatchEdit_Normal);
}
}
struct Statement_Parser{
Stream_Tokens stream;
int32_t token_index;
Buffer_Summary *buffer;
};
static Cpp_Token*
parser_next_token(Statement_Parser *parser){
Cpp_Token *result = 0;
bool32 still_looping = true;
while (parser->token_index >= parser->stream.end && still_looping){
still_looping = forward_stream_tokens(&parser->stream);
}
if (parser->token_index < parser->stream.end){
result = &parser->stream.tokens[parser->token_index];
++parser->token_index;
}
return(result);
}
static bool32 parse_statement_down(Application_Links *app, Statement_Parser *parser, Cpp_Token *token_out);
static bool32
parse_for_down(Application_Links *app, Statement_Parser *parser, Cpp_Token *token_out){
bool32 success = false;
Cpp_Token *token = parser_next_token(parser);
int32_t paren_level = 0;
while (token != 0){
if (!(token->flags & CPP_TFLAG_PP_BODY)){
switch (token->type){
case CPP_TOKEN_PARENTHESE_OPEN:
{
++paren_level;
}break;
case CPP_TOKEN_PARENTHESE_CLOSE:
{
--paren_level;
if (paren_level == 0){
success = parse_statement_down(app, parser, token_out);
goto finished;
}
else if (paren_level < 0){
success = false;
goto finished;
}
}break;
}
}
token = parser_next_token(parser);
}
finished:;
return(success);
}
static bool32
parse_if_down(Application_Links *app, Statement_Parser *parser, Cpp_Token *token_out){
bool32 success = false;
Cpp_Token *token = parser_next_token(parser);
if (token != 0){
success = parse_statement_down(app, parser, token_out);
if (success){
token = parser_next_token(parser);
if (token != 0 && token->type == CPP_TOKEN_KEY_CONTROL_FLOW){
char lexeme[32];
if (sizeof(lexeme)-1 >= token->size){
if (buffer_read_range(app, parser->buffer, token->start, token->start + token->size, lexeme)){
lexeme[token->size] = 0;
if (match(lexeme, "else")){
success = parse_statement_down(app, parser, token_out);
}
}
}
}
}
}
return(success);
}
static bool32
parse_block_down(Application_Links *app, Statement_Parser *parser, Cpp_Token *token_out){
bool32 success = false;
Cpp_Token *token = parser_next_token(parser);
int32_t nest_level = 0;
while (token != 0){
switch (token->type){
case CPP_TOKEN_BRACE_OPEN:
{
++nest_level;
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
if (nest_level == 0){
*token_out = *token;
success = true;
goto finished;
}
--nest_level;
}break;
}
token = parser_next_token(parser);
}
finished:;
return(success);
}
static bool32
parse_statement_down(Application_Links *app, Statement_Parser *parser, Cpp_Token *token_out){
bool32 success = false;
Cpp_Token *token = parser_next_token(parser);
if (token != 0){
bool32 not_getting_block = false;
do{
switch (token->type){
case CPP_TOKEN_BRACE_CLOSE:
{
goto finished;
}break;
case CPP_TOKEN_KEY_CONTROL_FLOW:
{
char lexeme[32];
if (sizeof(lexeme)-1 >= token->size){
if (buffer_read_range(app, parser->buffer, token->start, token->start + token->size, lexeme)){
lexeme[token->size] = 0;
if (match(lexeme, "for")){
success = parse_for_down(app, parser, token_out);
goto finished;
}
else if (match(lexeme, "if")){
success = parse_if_down(app, parser, token_out);
goto finished;
}
else if (match(lexeme, "else")){
success = false;
goto finished;
}
}
}
}break;
case CPP_TOKEN_BRACE_OPEN:
{
if (!not_getting_block){
success = parse_block_down(app, parser, token_out);
goto finished;
}
}break;
case CPP_TOKEN_SEMICOLON:
{
success = true;
*token_out = *token;
goto finished;
}break;
case CPP_TOKEN_EQ:
{
not_getting_block = true;
}break;
}
token = parser_next_token(parser);
}while(token != 0);
}
finished:;
return(success);
}
static bool32
find_whole_statement_down(Application_Links *app, Buffer_Summary *buffer, int32_t pos, int32_t *start_out, int32_t *end_out){
bool32 result = false;
int32_t start = pos;
int32_t end = start;
Cpp_Get_Token_Result get_result = {0};
if (buffer_get_token_index(app, buffer, pos, &get_result)){
Statement_Parser parser = {0};
parser.token_index = get_result.token_index;
if (parser.token_index < 0){
parser.token_index = 0;
}
if (get_result.in_whitespace){
parser.token_index += 1;
}
static const int32_t chunk_cap = 512;
Cpp_Token chunk[chunk_cap];
if (init_stream_tokens(&parser.stream, app, buffer, parser.token_index, chunk, chunk_cap)){
parser.buffer = buffer;
Cpp_Token end_token = {0};
if (parse_statement_down(app, &parser, &end_token)){
end = end_token.start + end_token.size;
result = true;
}
}
}
*start_out = start;
*end_out = end;
return(result);
}
CUSTOM_COMMAND_SIG(scope_absorb_down){
uint32_t access = AccessOpen;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
int32_t top = view.cursor.pos;
int32_t bottom = view.mark.pos;
if (top > bottom){
int32_t x = top;
top = bottom;
bottom = x;
}
Partition *part = &global_part;
Temp_Memory temp = begin_temp_memory(part);
if (buffer_get_char(app, &buffer, top) == '{' && buffer_get_char(app, &buffer, bottom-1) == '}'){
Range range;
if (find_whole_statement_down(app, &buffer, bottom, &range.start, &range.end)){
char *string_space = push_array(part, char, range.end - range.start);
buffer_read_range(app, &buffer, range.start, range.end, string_space);
String string = make_string(string_space, range.end - range.start);
string = skip_chop_whitespace(string);
int32_t newline_count = 0;
for (char *ptr = string_space; ptr < string.str; ++ptr){
if (*ptr == '\n'){
++newline_count;
}
}
bool32 extra_newline = false;
if (newline_count >= 2){
extra_newline = true;
}
int32_t edit_len = string.size + 1;
if (extra_newline){
edit_len += 1;
}
char *edit_str = push_array(part, char, edit_len);
if (extra_newline){
edit_str[0] = '\n';
copy_fast_unsafe(edit_str+1, string);
edit_str[edit_len-1] = '\n';
}
else{
copy_fast_unsafe(edit_str, string);
edit_str[edit_len-1] = '\n';
}
Buffer_Edit edits[2];
edits[0].str_start = 0;
edits[0].len = edit_len;
edits[0].start = bottom-1;
edits[0].end = bottom-1;
edits[1].str_start = 0;
edits[1].len = 0;
edits[1].start = range.start;
edits[1].end = range.end;
buffer_batch_edit(app, &buffer, edit_str, edit_len, edits, 2, BatchEdit_Normal);
}
}
end_temp_memory(temp);
}
// NOTE(allen): Some basic code manipulation ideas.
CUSTOM_COMMAND_SIG(rename_parameter){
uint32_t access = AccessOpen;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
Partition *part = &global_part;
Temp_Memory temp = begin_temp_memory(part);
Cpp_Get_Token_Result result;
if (buffer_get_token_index(app, &buffer, view.cursor.pos, &result)){
if (!result.in_whitespace){
static const int32_t stream_space_size = 512;
Cpp_Token stream_space[stream_space_size];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, &buffer, result.token_index, stream_space, stream_space_size)){
int32_t token_index = result.token_index;
Cpp_Token token = stream.tokens[token_index];
if (token.type == CPP_TOKEN_IDENTIFIER){
char old_lexeme_base[128];
String old_lexeme = make_fixed_width_string(old_lexeme_base);
if (token.size < sizeof(old_lexeme_base)){
Cpp_Token original_token = token;
old_lexeme.size = token.size;
buffer_read_range(app, &buffer, token.start, token.start+token.size, old_lexeme.str);
int32_t proc_body_found = 0;
bool32 still_looping = 0;
++token_index;
do{
for (; token_index < stream.end; ++token_index){
Cpp_Token *token_ptr = stream.tokens + token_index;
switch (token_ptr->type){
case CPP_TOKEN_BRACE_OPEN:
{
proc_body_found = 1;
goto doublebreak;
}break;
case CPP_TOKEN_BRACE_CLOSE:
case CPP_TOKEN_PARENTHESE_OPEN:
{
goto doublebreak;
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
doublebreak:;
if (proc_body_found){
Query_Bar with;
char with_space[1024];
with.prompt = make_lit_string("New Name: ");
with.string = make_fixed_width_string(with_space);
if (!query_user_string(app, &with)) return;
String replace_string = with.string;
Buffer_Edit *edits = (Buffer_Edit*)partition_current(part);
int32_t edit_max = (partition_remaining(part))/sizeof(Buffer_Edit);
int32_t edit_count = 0;
if (edit_max >= 1){
Buffer_Edit edit;
edit.str_start = 0;
edit.len = replace_string.size;
edit.start = original_token.start;
edit.end = original_token.start + original_token.size;
edits[edit_count] = edit;
++edit_count;
}
int32_t nesting_level = 0;
int32_t closed_correctly = 0;
++token_index;
still_looping = 0;
do{
for (; token_index < stream.end; ++token_index){
Cpp_Token *token_ptr = stream.tokens + token_index;
switch (token_ptr->type){
case CPP_TOKEN_IDENTIFIER:
{
if (token_ptr->size == old_lexeme.size){
char other_lexeme_base[128];
String other_lexeme = make_fixed_width_string(other_lexeme_base);
other_lexeme.size = old_lexeme.size;
buffer_read_range(app, &buffer, token_ptr->start,
token_ptr->start+token_ptr->size,
other_lexeme.str);
if (match(old_lexeme, other_lexeme)){
Buffer_Edit edit;
edit.str_start = 0;
edit.len = replace_string.size;
edit.start = token_ptr->start;
edit.end = token_ptr->start + token_ptr->size;
if (edit_count < edit_max){
edits[edit_count] = edit;
++edit_count;
}
else{
goto doublebreak2;
}
}
}
}break;
case CPP_TOKEN_BRACE_OPEN:
{
++nesting_level;
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
if (nesting_level == 0){
closed_correctly = 1;
goto doublebreak2;
}
else{
--nesting_level;
}
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
doublebreak2:;
if (closed_correctly){
buffer_batch_edit(app, &buffer, replace_string.str, replace_string.size,
edits, edit_count, BatchEdit_Normal);
}
}
}
}
}
}
}
end_temp_memory(temp);
}
CUSTOM_COMMAND_SIG(write_explicit_enum_values){
uint32_t access = AccessOpen;
View_Summary view = get_active_view(app, access);
Buffer_Summary buffer = get_buffer(app, view.buffer_id, access);
Partition *part = &global_part;
Temp_Memory temp = begin_temp_memory(part);
Cpp_Get_Token_Result result;
if (buffer_get_token_index(app, &buffer, view.cursor.pos, &result)){
if (!result.in_whitespace){
Cpp_Token stream_space[32];
Stream_Tokens stream = {0};
if (init_stream_tokens(&stream, app, &buffer, result.token_index, stream_space, 32)){
int32_t token_index = result.token_index;
Cpp_Token token = stream.tokens[token_index];
if (token.type == CPP_TOKEN_BRACE_OPEN){
++token_index;
int32_t seeker_index = token_index;
Stream_Tokens seek_stream = begin_temp_stream_token(&stream);
bool32 closed_correctly = false;
bool32 still_looping = false;
do{
for (; seeker_index < stream.end; ++seeker_index){
Cpp_Token *token_seeker = stream.tokens + seeker_index;
switch (token_seeker->type){
case CPP_TOKEN_BRACE_CLOSE:
closed_correctly = true;
goto finished_seek;
case CPP_TOKEN_BRACE_OPEN:
goto finished_seek;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
finished_seek:;
end_temp_stream_token(&stream, seek_stream);
if (closed_correctly){
int32_t count_estimate = 1 + (seeker_index - token_index)/2;
int32_t edit_count = 0;
Buffer_Edit *edits = push_array(part, Buffer_Edit, count_estimate);
char *string_base = (char*)partition_current(part);
String string = make_string(string_base, 0, partition_remaining(part));
closed_correctly = false;
still_looping = false;
int32_t value = 0;
do{
for (;token_index < stream.end; ++token_index){
Cpp_Token *token_ptr = stream.tokens + token_index;
switch (token_ptr->type){
case CPP_TOKEN_IDENTIFIER:
{
int32_t edit_start = token_ptr->start + token_ptr->size;
int32_t edit_stop = edit_start;
int32_t edit_is_good = 0;
++token_index;
do{
for (; token_index < stream.end; ++token_index){
token_ptr = stream.tokens + token_index;
switch (token_ptr->type){
case CPP_TOKEN_COMMA:
{
edit_stop = token_ptr->start;
edit_is_good = 1;
goto good_edit;
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
edit_stop = token_ptr->start;
closed_correctly = 1;
edit_is_good = 1;
goto good_edit;
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
good_edit:;
if (edit_is_good){
int32_t str_pos = string.size;
append(&string, " = ");
append_int_to_str(&string, value);
if (closed_correctly){
append(&string, "\n");
}
++value;
int32_t str_size = string.size - str_pos;
Buffer_Edit edit;
edit.str_start = str_pos;
edit.len = str_size;
edit.start = edit_start;
edit.end = edit_stop;
assert(edit_count < count_estimate);
edits[edit_count] = edit;
++edit_count;
}
if (!edit_is_good || closed_correctly){
goto finished;
}
}break;
case CPP_TOKEN_BRACE_CLOSE:
{
closed_correctly = 1;
goto finished;
}break;
}
}
still_looping = forward_stream_tokens(&stream);
}while(still_looping);
finished:;
if (closed_correctly){
buffer_batch_edit(app, &buffer, string_base, string.size,
edits, edit_count, BatchEdit_Normal);
}
}
}
}
}
}
end_temp_memory(temp);
}
CUSTOM_COMMAND_SIG(punishment){
Theme_Color colors[4];
colors[0].tag = Stag_Back;
colors[1].tag = Stag_Margin;
colors[2].tag = Stag_Margin_Hover;
colors[3].tag = Stag_Margin_Active;
get_theme_colors(app, colors, 4);
for (uint32_t i = 0; i < 4; ++i){
int_color color = colors[i].color;
uint8_t *c = (uint8_t*)(&color);
c[0] = 0xFF - c[0];
c[1] = 0xFF - c[1];
c[2] = 0xFF - c[2];
c[3] = 0xFF - c[3];
colors[i].color = color;
}
set_theme_colors(app, colors, 4);
}
extern "C" int32_t
get_bindings(void *data, int32_t size){
Bind_Helper context_ = begin_bind_helper(data, size);
Bind_Helper *context = &context_;
set_hook(context, hook_start, default_start);
set_hook(context, hook_view_size_change, default_view_adjust);
set_open_file_hook(context, default_file_settings);
set_new_file_hook(context, default_new_file);
set_save_file_hook(context, default_file_save);
set_input_filter(context, default_suppress_mouse_filter);
set_command_caller(context, default_command_caller);
set_scroll_rule(context, smooth_scroll_rule);
default_keys(context);
// NOTE(allen|a4.0.6): Command maps can be opened more than
// once so that you can extend existing maps very easily.
// You can also use the helper "restart_map" instead of
// begin_map to clear everything that was in the map and
// bind new things instead.
begin_map(context, mapid_global);
end_map(context);
begin_map(context, mapid_file);
bind(context, 's', MDFR_CTRL, punishment);
bind(context, 's', MDFR_ALT, save);
bind(context, 'k', MDFR_ALT, kill_rect);
bind(context, ' ', MDFR_ALT | MDFR_CTRL, multi_line_edit);
bind(context, key_page_up, MDFR_ALT, miblo_increment_time_stamp);
bind(context, key_page_down, MDFR_ALT, miblo_decrement_time_stamp);
bind(context, key_home, MDFR_ALT, miblo_increment_time_stamp_minute);
bind(context, key_end, MDFR_ALT, miblo_decrement_time_stamp_minute);
end_map(context);
begin_map(context, default_code_map);
bind(context, '[', MDFR_ALT, highlight_surrounding_scope);
bind(context, ']', MDFR_ALT, highlight_prev_scope_absolute);
bind(context, '\'', MDFR_ALT, highlight_next_scope_absolute);
bind(context, '/', MDFR_ALT, place_in_scope);
bind(context, '-', MDFR_ALT, delete_current_scope);
bind(context, 'j', MDFR_ALT, scope_absorb_down);
bind(context, key_insert, MDFR_CTRL, write_explicit_enum_values);
bind(context, 'p', MDFR_ALT, rename_parameter);
end_map(context);
BIND_4CODER_TESTS(context);
int32_t result = end_bind_helper(context);
return(result);
}
#endif
// BOTTOM
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