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Add custom syntax highlighter and optimize

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This commit is contained in:
Syed Daanish
2026-01-16 21:47:05 +00:00
parent 04cce25bf2
commit 1fda5bf246
77 changed files with 1487 additions and 1673 deletions
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63
src/editor/adjustment.cc
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@@ -1,13 +1,10 @@
#include "editor/editor.h"
#include "editor/folds.h"
void ensure_cursor(Editor *editor) {
std::shared_lock knot_lock(editor->knot_mtx);
if (editor->cursor < editor->scroll) {
uint32_t line_idx = next_unfolded_row(editor, editor->scroll.row);
editor->cursor.row = line_idx;
editor->cursor.col =
line_idx == editor->scroll.row ? editor->scroll.col : 0;
editor->cursor.row = editor->scroll.row;
editor->cursor.col = editor->scroll.col;
editor->cursor_preffered = UINT32_MAX;
return;
}
@@ -24,20 +21,6 @@ void ensure_cursor(Editor *editor) {
while (true) {
if (visual_rows >= editor->size.row)
break;
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
Coord c = {fold->start, 0};
last_visible = c;
visual_rows++;
uint32_t skip_until = fold->end;
while (line_index <= skip_until) {
char *line = next_line(it, nullptr);
if (!line)
break;
line_index++;
}
continue;
}
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
@@ -81,14 +64,8 @@ void ensure_cursor(Editor *editor) {
}
line_index++;
}
uint32_t last_real_row = last_visible.row;
const Fold *last_fold = fold_for_line(editor->folds, last_visible.row);
if (last_fold) {
last_visible.row = last_fold->start == 0 ? 0 : last_fold->start - 1;
last_visible.col = 0;
}
editor->cursor.row = last_visible.row;
editor->cursor.col = last_visible.row == last_real_row ? last_visible.col : 0;
editor->cursor.col = last_visible.col;
editor->cursor_preffered = UINT32_MAX;
free(it->buffer);
free(it);
@@ -112,7 +89,6 @@ void ensure_scroll(Editor *editor) {
}
if (len > 0 && line[len - 1] == '\n')
--len;
uint32_t rows = 1;
uint32_t cols = 0;
uint32_t offset = 0;
uint32_t old_offset = 0;
@@ -121,7 +97,6 @@ void ensure_scroll(Editor *editor) {
grapheme_next_character_break_utf8(line + offset, len - offset);
int width = display_width(line + offset, inc);
if (cols + width > render_width) {
rows++;
cols = 0;
if (editor->cursor.col > old_offset && editor->cursor.col <= offset) {
editor->scroll.row = editor->cursor.row;
@@ -139,7 +114,7 @@ void ensure_scroll(Editor *editor) {
free(it);
editor->scroll.row = editor->cursor.row;
editor->scroll.col = (editor->cursor.col == 0) ? 0 : old_offset;
} else {
} else if (editor->cursor.row - editor->scroll.row < editor->size.row * 2) {
uint32_t line_index = editor->scroll.row;
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
@@ -150,30 +125,6 @@ void ensure_scroll(Editor *editor) {
uint32_t q_size = 0;
bool first_visual_line = true;
while (true) {
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
Coord fold_coord = {fold->start, 0};
if (q_size < max_visual_lines) {
scroll_queue[(q_head + q_size) % max_visual_lines] = fold_coord;
q_size++;
} else {
scroll_queue[q_head] = fold_coord;
q_head = (q_head + 1) % max_visual_lines;
}
if (fold->start <= editor->cursor.row &&
editor->cursor.row <= fold->end) {
editor->scroll = scroll_queue[q_head];
break;
}
uint32_t skip_until = fold->end;
while (line_index <= skip_until) {
char *line = next_line(it, nullptr);
if (!line)
break;
line_index++;
}
continue;
}
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
@@ -234,5 +185,11 @@ void ensure_scroll(Editor *editor) {
free(scroll_queue);
free(it->buffer);
free(it);
} else {
editor->scroll.row = (editor->cursor.row > editor->size.row * 1.5)
? editor->cursor.row - editor->size.row * 1.5
: 0;
editor->scroll.col = 0;
ensure_scroll(editor);
}
}