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4coder_fleury_divider_comments.cpp
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//~ NOTE(rjf): Divider Comments
String_Const_u8 strong_divider_comment_signifier = string_u8_litexpr("//~");
String_Const_u8 weak_divider_comment_signifier = string_u8_litexpr("//-");
function i64
_F4_Boundary_DividerComment(Application_Links *app, Buffer_ID buffer,
Side side, Scan_Direction direction, i64 pos,
String_Const_u8 signifier)
{
i64 result = pos;
Scratch_Block scratch(app);
Token_Array tokens = get_token_array_from_buffer(app, buffer);
if(tokens.tokens != 0)
{
Token_Iterator_Array it = token_iterator_pos(0, &tokens, pos);
switch(direction)
{
case Scan_Forward:
{
for(;token_it_inc_non_whitespace(&it);)
{
Token *token = token_it_read(&it);
if(token == 0)
{
break;
}
if(token->kind == TokenBaseKind_Comment)
{
String_Const_u8 str = push_buffer_range(app, scratch, buffer, Ii64(token));
if(str.size >= signifier.size &&
string_match(string_substring(str, Ii64(0, signifier.size)), signifier))
{
result = token->pos;
break;
}
}
}
}break;
case Scan_Backward:
{
for(;token_it_dec_non_whitespace(&it);)
{
Token *token = token_it_read(&it);
if(token == 0)
{
break;
}
if(token->kind == TokenBaseKind_Comment)
{
String_Const_u8 str = push_buffer_range(app, scratch, buffer, Ii64(token));
if(str.size >= signifier.size &&
string_match(string_substring(str, Ii64(0, signifier.size)), signifier))
{
result = token->pos;
break;
}
}
}
}break;
}
}
return(result);
}
function i64
F4_Boundary_DividerComment(Application_Links *app, Buffer_ID buffer,
Side side, Scan_Direction direction, i64 pos,
String_Const_u8 signifier)
{
return _F4_Boundary_DividerComment(app, buffer, side, direction, pos, strong_divider_comment_signifier);
}
CUSTOM_COMMAND_SIG(f4_move_to_next_divider_comment)
CUSTOM_DOC("Seek right for next divider comment in the buffer.")
{
Scratch_Block scratch(app);
current_view_scan_move(app, Scan_Forward, push_boundary_list(scratch, F4_Boundary_DividerComment));
}
CUSTOM_COMMAND_SIG(f4_move_to_prev_divider_comment)
CUSTOM_DOC("Seek left for previous divider comment in the buffer.")
{
Scratch_Block scratch(app);
current_view_scan_move(app, Scan_Backward, push_boundary_list(scratch, F4_Boundary_DividerComment));
}
function void
F4_RenderDividerComments(Application_Links *app, Buffer_ID buffer, View_ID view,
Text_Layout_ID text_layout_id)
{
if(!def_get_config_b32(vars_save_string_lit("f4_disable_divider_comments")))
{
ProfileScope(app, "[F4] Divider Comments");
Token_Array token_array = get_token_array_from_buffer(app, buffer);
Range_i64 visible_range = text_layout_get_visible_range(app, text_layout_id);
Scratch_Block scratch(app);
if(token_array.tokens != 0)
{
i64 first_index = token_index_from_pos(&token_array, visible_range.first);
Token_Iterator_Array it = token_iterator_index(0, &token_array, first_index);
Token *token = 0;
for(;;)
{
token = token_it_read(&it);
if(token->pos >= visible_range.one_past_last || !token || !token_it_inc_non_whitespace(&it))
{
break;
}
if(token->kind == TokenBaseKind_Comment)
{
Rect_f32 comment_first_char_rect = text_layout_character_on_screen(app, text_layout_id, token->pos);
Rect_f32 comment_last_char_rect = text_layout_character_on_screen(app, text_layout_id, token->pos+token->size-1);
String_Const_u8 token_string = push_buffer_range(app, scratch, buffer, Ii64(token));
String_Const_u8 signifier_substring = string_substring(token_string, Ii64(0, 3));
f32 roundness = 4.f;
// NOTE(rjf): Strong dividers.
if(string_match(signifier_substring, strong_divider_comment_signifier))
{
Rect_f32 rect =
{
comment_first_char_rect.x0,
comment_first_char_rect.y0-2,
10000,
comment_first_char_rect.y0,
};
draw_rectangle(app, rect, roundness, fcolor_resolve(fcolor_id(defcolor_comment)));
}
// NOTE(rjf): Weak dividers.
else if(string_match(signifier_substring, weak_divider_comment_signifier))
{
f32 dash_size = 8;
Rect_f32 rect =
{
comment_last_char_rect.x1,
(comment_last_char_rect.y0 + comment_last_char_rect.y1)/2 - 1,
comment_last_char_rect.x1 + dash_size,
(comment_last_char_rect.y0 + comment_last_char_rect.y1)/2 + 1,
};
for(int i = 0; i < 1000; i += 1)
{
draw_rectangle(app, rect, roundness, fcolor_resolve(fcolor_id(defcolor_comment)));
rect.x0 += dash_size*1.5f;
rect.x1 += dash_size*1.5f;
}
}
}
}
}
}
}