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4coder
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Code Issues Releases Activity

cursor seeking types all collapsed down to one function

master
Allen Webster 2016-09-23 00:56:47 -04:00
parent 6a4e401a56
commit e5d1d71175
3 changed files with 242 additions and 180 deletions
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4
4coder_auto_indent.cpp
View File

@ -480,7 +480,9 @@ get_indentation_marks(Application_Links *app, Partition *part, Buffer_Summary *b
case CPP_TOKEN_PARENTHESE_CLOSE:
if (!(token.flags & CPP_TFLAG_PP_BODY)){
--indent.paren_nesting;
if (indent.paren_nesting > 0){
--indent.paren_nesting;
}
}
break;
}

1
4ed_defines.h
View File

@ -55,6 +55,7 @@ typedef double f64;
#endif
#define TentativeAssert(c) Assert(c)
#define NotImplemented Assert(!"This is not implemented yet!")
#define InvalidCodePath Assert(!"Invalid code path!")
#define AllowLocal(name) (void)name
#ifndef ArrayCount

417
buffer/4coder_buffer_abstract.cpp
View File

@ -388,146 +388,6 @@ buffer_get_line_index_from_wrapped_y(f32 *wraps, f32 y, f32 font_height, i32 l_b
return(result);
}
internal_4tech Full_Cursor
buffer_cursor_seek(Buffer_Type *buffer, Buffer_Seek seek, f32 max_width,
f32 font_height, f32 *adv, Full_Cursor cursor){
i32 xy_seek;
switch(seek.type){
case buffer_seek_pos:
if (cursor.pos >= seek.pos) goto buffer_cursor_seek_end;
case buffer_seek_wrapped_xy:
if (seek.x == 0 && cursor.wrapped_y >= seek.y) goto buffer_cursor_seek_end;
case buffer_seek_unwrapped_xy:
if (seek.x == 0 && cursor.unwrapped_y >= seek.y) goto buffer_cursor_seek_end;
case buffer_seek_line_char:
if (cursor.line >= seek.line && cursor.character >= seek.character) goto buffer_cursor_seek_end;
}
if (adv){
Buffer_Stream_Type stream = {0};
i32 size = buffer_size(buffer);
i32 i = cursor.pos;
xy_seek = (seek.type == buffer_seek_wrapped_xy || seek.type == buffer_seek_unwrapped_xy);
i32 result = 1;
stream.use_termination_character = 1;
stream.terminator = 0;
if (buffer_stringify_loop(&stream, buffer, i, size)){
b32 still_looping = 0;
do{
for (; i < stream.end; ++i){
u8 ch = (u8)stream.data[i];
Full_Cursor prev_cursor = cursor;
switch (ch){
case '\n':
++cursor.line;
cursor.unwrapped_y += font_height;
cursor.wrapped_y += font_height;
cursor.character = 1;
cursor.unwrapped_x = 0;
cursor.wrapped_x = 0;
break;
default:
{
f32 ch_width = adv[ch];
if (cursor.wrapped_x + ch_width > max_width){
cursor.wrapped_y += font_height;
cursor.wrapped_x = 0;
prev_cursor = cursor;
}
++cursor.character;
cursor.unwrapped_x += ch_width;
cursor.wrapped_x += ch_width;
}break;
}
++cursor.pos;
if (cursor.pos > size){
cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}
f32 x = 0, px = 0, y = 0;
switch (seek.type){
case buffer_seek_pos:
if (cursor.pos > seek.pos){
cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}break;
case buffer_seek_wrapped_xy:
x = cursor.wrapped_x; px = prev_cursor.wrapped_x;
y = cursor.wrapped_y; break;
case buffer_seek_unwrapped_xy:
x = cursor.unwrapped_x; px = prev_cursor.unwrapped_x;
y = cursor.unwrapped_y; break;
case buffer_seek_line_char:
if (cursor.line == seek.line && cursor.character >= seek.character){
result = 0;
goto cursor_seek_step_end;
}
else if (cursor.line > seek.line){
cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}break;
}
if (xy_seek){
if (y > seek.y){
cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}
if (y > seek.y - font_height && x >= seek.x){
if (!seek.round_down){
if (ch != '\n' && (seek.x - px) < (x - seek.x)) cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}
if (x > seek.x){
cursor = prev_cursor;
result = 0;
goto cursor_seek_step_end;
}
}
}
cursor_seek_step_end:;
if (!result){
goto buffer_cursor_seek_end;
}
}
still_looping = buffer_stringify_next(&stream);
}while(still_looping);
}
assert_4tech(result == 0);
}
buffer_cursor_seek_end:;
return(cursor);
}
internal_4tech Partial_Cursor
buffer_partial_from_pos(Buffer_Type *buffer, i32 pos){
Partial_Cursor result = {0};
@ -548,27 +408,6 @@ buffer_partial_from_pos(Buffer_Type *buffer, i32 pos){
return(result);
}
internal_4tech Full_Cursor
buffer_cursor_from_pos(Buffer_Type *buffer, f32 *wraps, i32 pos,
f32 max_width, f32 font_height, f32 *adv){
Full_Cursor result = {0};
i32 line_index = 0;
i32 size = buffer_size(buffer);
if (pos > size){
pos = size;
}
if (pos < 0){
pos = 0;
}
line_index = buffer_get_line_index_range(buffer, pos, 0, buffer->line_count);
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
result = buffer_cursor_seek(buffer, seek_pos(pos), max_width, font_height, adv, result);
return(result);
}
internal_4tech Partial_Cursor
buffer_partial_from_line_character(Buffer_Type *buffer, i32 line, i32 character){
Partial_Cursor result = {0};
@ -595,18 +434,233 @@ buffer_partial_from_line_character(Buffer_Type *buffer, i32 line, i32 character)
return(result);
}
struct Buffer_Cursor_Seek_Params{
Buffer_Type *buffer;
Buffer_Seek seek;
f32 max_width;
f32 font_height;
f32 *adv;
f32 *wraps;
};
internal_4tech Full_Cursor
buffer_cursor_seek(Buffer_Cursor_Seek_Params params, Full_Cursor cursor_hint){
i32 size = buffer_size(params.buffer);
switch (params.seek.type){
case buffer_seek_pos:
{
if (params.seek.pos > size){
params.seek.pos = size;
}
if (params.seek.pos < 0){
params.seek.pos = 0;
}
i32 line_index = buffer_get_line_index_range(params.buffer, params.seek.pos, 0, params.buffer->line_count);
cursor_hint = make_cursor_hint(line_index, params.buffer->line_starts, params.wraps, params.font_height);
}break;
case buffer_seek_line_char:
{
i32 line_index = params.seek.line - 1;
if (line_index >= params.buffer->line_count){
line_index = params.buffer->line_count - 1;
}
if (line_index < 0){
line_index = 0;
}
cursor_hint = make_cursor_hint(line_index, params.buffer->line_starts, params.wraps, params.font_height);
}break;
case buffer_seek_unwrapped_xy:
{
i32 line_index = (i32)(params.seek.y / params.font_height);
if (line_index >= params.buffer->line_count){
line_index = params.buffer->line_count - 1;
}
if (line_index < 0){
line_index = 0;
}
cursor_hint = make_cursor_hint(line_index, params.buffer->line_starts, params.wraps, params.font_height);
}break;
case buffer_seek_wrapped_xy:
{
i32 line_index = buffer_get_line_index_from_wrapped_y(params.wraps, params.seek.y,
params.font_height, 0, params.buffer->line_count);
cursor_hint = make_cursor_hint(line_index, params.buffer->line_starts, params.wraps, params.font_height);
}break;
}
Full_Cursor cursor = cursor_hint;
switch(params.seek.type){
case buffer_seek_pos:
if (cursor.pos >= params.seek.pos){
goto buffer_cursor_seek_end;
}break;
case buffer_seek_wrapped_xy:
if (params.seek.x == 0 && cursor.wrapped_y >= params.seek.y){
goto buffer_cursor_seek_end;
}break;
case buffer_seek_unwrapped_xy:
if (params.seek.x == 0 && cursor.unwrapped_y >= params.seek.y){
goto buffer_cursor_seek_end;
}break;
case buffer_seek_line_char:
if (cursor.line >= params.seek.line && cursor.character >= params.seek.character){
goto buffer_cursor_seek_end;
}break;
}
if (params.adv){
Buffer_Stream_Type stream = {0};
i32 i = cursor.pos;
b32 xy_seek = (params.seek.type == buffer_seek_wrapped_xy || params.seek.type == buffer_seek_unwrapped_xy);
stream.use_termination_character = 1;
stream.terminator = 0;
if (buffer_stringify_loop(&stream, params.buffer, i, size)){
b32 still_looping = 0;
do{
for (; i < stream.end; ++i){
u8 ch = (u8)stream.data[i];
Full_Cursor prev_cursor = cursor;
switch (ch){
case '\n':
++cursor.line;
cursor.unwrapped_y += params.font_height;
cursor.wrapped_y += params.font_height;
cursor.character = 1;
cursor.unwrapped_x = 0;
cursor.wrapped_x = 0;
break;
default:
{
f32 ch_width = params.adv[ch];
if (cursor.wrapped_x + ch_width > params.max_width){
cursor.wrapped_y += params.font_height;
cursor.wrapped_x = 0;
prev_cursor = cursor;
}
++cursor.character;
cursor.unwrapped_x += ch_width;
cursor.wrapped_x += ch_width;
}break;
}
++cursor.pos;
if (cursor.pos > size){
cursor = prev_cursor;
goto buffer_cursor_seek_end;
}
f32 x = 0, px = 0, y = 0;
switch (params.seek.type){
case buffer_seek_pos:
if (cursor.pos > params.seek.pos){
cursor = prev_cursor;
goto buffer_cursor_seek_end;
}break;
case buffer_seek_wrapped_xy:
x = cursor.wrapped_x; px = prev_cursor.wrapped_x;
y = cursor.wrapped_y; break;
case buffer_seek_unwrapped_xy:
x = cursor.unwrapped_x; px = prev_cursor.unwrapped_x;
y = cursor.unwrapped_y; break;
case buffer_seek_line_char:
if (cursor.line == params.seek.line && cursor.character >= params.seek.character){
goto buffer_cursor_seek_end;
}
else if (cursor.line > params.seek.line){
cursor = prev_cursor;
goto buffer_cursor_seek_end;
}break;
}
if (xy_seek){
if (y > params.seek.y){
cursor = prev_cursor;
goto buffer_cursor_seek_end;
}
if (y > params.seek.y - params.font_height && x >= params.seek.x){
if (!params.seek.round_down){
if (ch != '\n' && (params.seek.x - px) < (x - params.seek.x)) cursor = prev_cursor;
goto buffer_cursor_seek_end;
}
if (x > params.seek.x){
cursor = prev_cursor;
goto buffer_cursor_seek_end;
}
}
}
}
still_looping = buffer_stringify_next(&stream);
}while(still_looping);
}
InvalidCodePath;
}
buffer_cursor_seek_end:;
return(cursor);
}
internal_4tech Full_Cursor
buffer_cursor_from_pos(Buffer_Type *buffer, f32 *wraps, i32 pos,
f32 max_width, f32 font_height, f32 *adv){
Full_Cursor result = {0};
Buffer_Cursor_Seek_Params params;
params.buffer = buffer;
params.seek = seek_pos(pos);
params.max_width = max_width;
params.font_height = font_height;
params.adv = adv;
params.wraps = wraps;
result = buffer_cursor_seek(params, result);
return(result);
}
internal_4tech Full_Cursor
buffer_cursor_from_line_character(Buffer_Type *buffer, f32 *wraps, i32 line, i32 character,
f32 max_width, f32 font_height, f32 *adv){
Full_Cursor result = {0};
i32 line_index = line - 1;
Buffer_Cursor_Seek_Params params;
params.buffer = buffer;
params.seek = seek_line_char(line, character);
params.max_width = max_width;
params.font_height = font_height;
params.adv = adv;
params.wraps = wraps;
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
if (line_index < 0) line_index = 0;
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
result = buffer_cursor_seek(buffer, seek_line_char(line, character),
max_width, font_height, adv, result);
result = buffer_cursor_seek(params, result);
return(result);
}
@ -615,14 +669,15 @@ internal_4tech Full_Cursor
buffer_cursor_from_unwrapped_xy(Buffer_Type *buffer, f32 *wraps, f32 x, f32 y, i32 round_down,
f32 max_width, f32 font_height, f32 *adv){
Full_Cursor result = {0};
i32 line_index = (i32)(y / font_height);
Buffer_Cursor_Seek_Params params;
params.buffer = buffer;
params.seek = seek_unwrapped_xy(x, y, round_down);
params.max_width = max_width;
params.font_height = font_height;
params.adv = adv;
params.wraps = wraps;
if (line_index >= buffer->line_count) line_index = buffer->line_count - 1;
if (line_index < 0) line_index = 0;
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
result = buffer_cursor_seek(buffer, seek_unwrapped_xy(x, y, round_down),
max_width, font_height, adv, result);
result = buffer_cursor_seek(params, result);
return(result);
}
@ -631,11 +686,15 @@ internal_4tech Full_Cursor
buffer_cursor_from_wrapped_xy(Buffer_Type *buffer, f32 *wraps, f32 x, f32 y, i32 round_down,
f32 max_width, f32 font_height, f32 *adv){
Full_Cursor result = {0};
i32 line_index = buffer_get_line_index_from_wrapped_y(wraps, y, font_height, 0, buffer->line_count);
Buffer_Cursor_Seek_Params params;
params.buffer = buffer;
params.seek = seek_wrapped_xy(x, y, round_down);
params.max_width = max_width;
params.font_height = font_height;
params.adv = adv;
params.wraps = wraps;
result = make_cursor_hint(line_index, buffer->line_starts, wraps, font_height);
result = buffer_cursor_seek(buffer, seek_wrapped_xy(x, y, round_down),
max_width, font_height, adv, result);
result = buffer_cursor_seek(params, result);
return(result);
}