Rearrange code and cleanup

This commit is contained in:
2025-12-30 01:19:50 +00:00
parent 04179d1a4e
commit 235eafb01c
51 changed files with 2608 additions and 2646 deletions

238
src/editor/adjustment.cc Normal file
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#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_preffered = UINT32_MAX;
return;
}
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
uint32_t render_width = editor->size.col - numlen;
uint32_t visual_rows = 0;
uint32_t line_index = editor->scroll.row;
bool first_visual_line = true;
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
Coord last_visible = editor->scroll;
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)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
uint32_t offset = first_visual_line ? editor->scroll.col : 0;
first_visual_line = false;
while (offset < line_len || (line_len == 0 && offset == 0)) {
Coord current = {line_index, offset};
last_visible = current;
visual_rows++;
if (visual_rows >= editor->size.row)
break;
uint32_t col = 0;
uint32_t advance = 0;
uint32_t left = line_len - offset;
while (left > 0 && col < render_width) {
uint32_t g =
grapheme_next_character_break_utf8(line + offset + advance, left);
int w = display_width(line + offset + advance, g);
if (col + w > render_width)
break;
advance += g;
left -= g;
col += w;
}
if (line_index == editor->cursor.row) {
if (editor->cursor.col >= offset &&
editor->cursor.col <= offset + advance) {
free(it->buffer);
free(it);
return;
}
}
if (advance == 0)
break;
offset += advance;
if (line_len == 0)
break;
}
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_preffered = UINT32_MAX;
free(it->buffer);
free(it);
}
void ensure_scroll(Editor *editor) {
std::shared_lock knot_lock(editor->knot_mtx);
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
uint32_t render_width = editor->size.col - numlen;
if (editor->cursor < editor->scroll) {
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
if (!it)
return;
uint32_t len;
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return;
}
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;
while (offset < len) {
uint32_t inc =
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;
editor->scroll.col = old_offset;
free(it->buffer);
free(it);
return;
}
old_offset = offset;
}
cols += width;
offset += inc;
}
free(it->buffer);
free(it);
editor->scroll.row = editor->cursor.row;
editor->scroll.col = (editor->cursor.col == 0) ? 0 : old_offset;
} else {
uint32_t line_index = editor->scroll.row;
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
uint32_t max_visual_lines = editor->size.row;
Coord *scroll_queue = (Coord *)malloc(sizeof(Coord) * max_visual_lines);
uint32_t q_head = 0;
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)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
uint32_t current_byte_offset = 0;
if (first_visual_line) {
current_byte_offset += editor->scroll.col;
first_visual_line = false;
}
while (current_byte_offset < line_len ||
(line_len == 0 && current_byte_offset == 0)) {
Coord current_coord = {line_index, current_byte_offset};
if (q_size < max_visual_lines) {
scroll_queue[(q_head + q_size) % max_visual_lines] = current_coord;
q_size++;
} else {
scroll_queue[q_head] = current_coord;
q_head = (q_head + 1) % max_visual_lines;
}
uint32_t col = 0;
uint32_t local_render_offset = 0;
uint32_t line_left = line_len - current_byte_offset;
while (line_left > 0 && col < render_width) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
line + current_byte_offset + local_render_offset, line_left);
int width = display_width(
line + current_byte_offset + local_render_offset, cluster_len);
if (col + width > render_width)
break;
local_render_offset += cluster_len;
line_left -= cluster_len;
col += width;
}
if (line_index == editor->cursor.row) {
bool cursor_found = false;
if (editor->cursor.col >= current_byte_offset &&
editor->cursor.col < current_byte_offset + local_render_offset)
cursor_found = true;
else if (editor->cursor.col == line_len &&
current_byte_offset + local_render_offset == line_len)
cursor_found = true;
if (cursor_found) {
editor->scroll = scroll_queue[q_head];
free(scroll_queue);
free(it->buffer);
free(it);
return;
}
}
current_byte_offset += local_render_offset;
if (line_len == 0)
break;
}
line_index++;
}
free(scroll_queue);
free(it->buffer);
free(it);
}
}

115
src/editor/boundaries.cc Normal file
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#include "editor/editor.h"
uint32_t scan_left(const char *line, uint32_t len, uint32_t off) {
if (off > len)
off = len;
uint32_t i = off;
while (i > 0) {
unsigned char c = (unsigned char)line[i - 1];
if ((c & 0x80) != 0)
break;
if (!((c == '_') || (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z')))
break;
--i;
}
return i;
}
uint32_t scan_right(const char *line, uint32_t len, uint32_t off) {
if (off > len)
off = len;
uint32_t i = off;
while (i < len) {
unsigned char c = (unsigned char)line[i];
if ((c & 0x80) != 0)
break;
if (!((c == '_') || (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
(c >= 'a' && c <= 'z')))
break;
++i;
}
return i;
}
void word_boundaries_exclusive(Editor *editor, Coord coord, uint32_t *prev_col,
uint32_t *next_col) {
if (!editor)
return;
std::shared_lock lock(editor->knot_mtx);
LineIterator *it = begin_l_iter(editor->root, coord.row);
if (!it)
return;
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
return;
if (line_len && line[line_len - 1] == '\n')
line_len--;
uint32_t col = coord.col;
if (col > line_len)
col = line_len;
uint32_t left = scan_left(line, line_len, col);
uint32_t right = scan_right(line, line_len, col);
if (prev_col)
*prev_col = left;
if (next_col)
*next_col = right;
free(it->buffer);
free(it);
}
uint32_t word_jump_right(const char *line, size_t len, uint32_t pos) {
if (pos >= len)
return len;
size_t next = grapheme_next_word_break_utf8(line + pos, len - pos);
return static_cast<uint32_t>(pos + next);
}
uint32_t word_jump_left(const char *line, size_t len, uint32_t col) {
if (col == 0)
return 0;
size_t pos = 0;
size_t last = 0;
size_t cursor = col;
while (pos < len) {
size_t next = pos + grapheme_next_word_break_utf8(line + pos, len - pos);
if (next >= cursor)
break;
last = next;
pos = next;
}
return static_cast<uint32_t>(last);
}
void word_boundaries(Editor *editor, Coord coord, uint32_t *prev_col,
uint32_t *next_col, uint32_t *prev_clusters,
uint32_t *next_clusters) {
if (!editor)
return;
std::shared_lock lock(editor->knot_mtx);
LineIterator *it = begin_l_iter(editor->root, coord.row);
if (!it)
return;
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
return;
if (line_len && line[line_len - 1] == '\n')
line_len--;
size_t col = coord.col;
if (col > line_len)
col = line_len;
size_t left = word_jump_left(line, line_len, col);
size_t right = word_jump_right(line, line_len, col);
if (prev_col)
*prev_col = static_cast<uint32_t>(left);
if (next_col)
*next_col = static_cast<uint32_t>(right);
if (prev_clusters)
*prev_clusters = count_clusters(line, line_len, left, col);
if (next_clusters)
*next_clusters = count_clusters(line, line_len, col, right);
free(it->buffer);
free(it);
}

97
src/editor/click.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "main.h"
Coord editor_hit_test(Editor *editor, uint32_t x, uint32_t y) {
if (mode == INSERT)
x++;
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
bool is_gutter_click = (x < numlen);
uint32_t render_width = editor->size.col - numlen;
x = MAX(x, numlen) - numlen;
uint32_t target_visual_row = y;
uint32_t visual_row = 0;
uint32_t line_index = editor->scroll.row;
uint32_t last_line_index = editor->scroll.row;
uint32_t last_col = editor->scroll.col;
bool first_visual_line = true;
std::shared_lock knot_lock(editor->knot_mtx);
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return editor->scroll;
while (visual_row <= target_visual_row) {
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
if (visual_row == target_visual_row) {
free(it->buffer);
free(it);
if (is_gutter_click) {
remove_fold(editor, fold->start);
return {UINT32_MAX, UINT32_MAX};
}
return {fold->start > 0 ? fold->start - 1 : 0, 0};
}
visual_row++;
while (line_index <= fold->end) {
char *l = next_line(it, nullptr);
if (!l)
break;
line_index++;
}
last_line_index = fold->end;
last_col = 0;
continue;
}
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
break;
if (line_len && line[line_len - 1] == '\n')
line_len--;
last_line_index = line_index;
last_col = line_len;
uint32_t offset = first_visual_line ? editor->scroll.col : 0;
first_visual_line = false;
while (offset < line_len || (line_len == 0 && offset == 0)) {
uint32_t col = 0;
uint32_t advance = 0;
uint32_t left = line_len - offset;
uint32_t last_good_offset = offset;
while (left > 0 && col < render_width) {
uint32_t g =
grapheme_next_character_break_utf8(line + offset + advance, left);
int w = display_width(line + offset + advance, g);
if (col + w > render_width)
break;
if (visual_row == target_visual_row && x < col + w) {
free(it->buffer);
free(it);
return {line_index, offset + advance};
}
advance += g;
last_good_offset = offset + advance;
left -= g;
col += w;
}
last_col = last_good_offset;
if (visual_row == target_visual_row) {
free(it->buffer);
free(it);
return {line_index, last_good_offset};
}
visual_row++;
if (visual_row > target_visual_row)
break;
if (advance == 0)
break;
offset += advance;
if (line_len == 0)
break;
}
line_index++;
}
free(it->buffer);
free(it);
return {last_line_index, last_col};
}

325
src/editor/cursor.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "utils/utils.h"
Coord move_right_pure(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t line_len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
if (!it)
return result;
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
while (number > 0) {
if (col >= line_len) {
uint32_t next_row = row + 1;
if (next_row >= editor->root->line_count) {
col = line_len;
break;
}
row = next_row;
col = 0;
line = next_line(it, &line_len);
if (!line)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
} else {
uint32_t inc =
grapheme_next_character_break_utf8(line + col, line_len - col);
if (inc == 0)
break;
col += inc;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_left_pure(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (len > 0 && line[len - 1] == '\n')
--len;
bool iterator_ahead = true;
while (number > 0) {
if (col == 0) {
if (row == 0)
break;
if (iterator_ahead) {
prev_line(it, nullptr);
iterator_ahead = false;
}
line = nullptr;
row--;
line = prev_line(it, &len);
if (!line)
break;
if (len > 0 && line[len - 1] == '\n')
--len;
col = len;
} else {
uint32_t new_col = 0;
while (new_col < col) {
uint32_t inc =
grapheme_next_character_break_utf8(line + new_col, len - new_col);
if (new_col + inc >= col)
break;
new_col += inc;
}
col = new_col;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_right(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t line_len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
if (!it)
return result;
uint32_t target_row = next_unfolded_row(editor, row);
while (row < target_row) {
if (!next_line(it, &line_len)) {
free(it->buffer);
free(it);
return result;
}
++row;
}
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
while (number > 0) {
if (col >= line_len) {
uint32_t next_row = next_unfolded_row(editor, row + 1);
if (next_row >= editor->root->line_count) {
col = line_len;
break;
}
while (row < next_row) {
line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
++row;
}
if (line_len > 0 && line[line_len - 1] == '\n')
--line_len;
col = 0;
--number;
continue;
} else {
uint32_t inc =
grapheme_next_character_break_utf8(line + col, line_len - col);
if (inc == 0)
break;
col += inc;
--number;
}
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
Coord move_left(Editor *editor, Coord cursor, uint32_t number) {
Coord result = cursor;
if (!editor || !editor->root || number == 0)
return result;
uint32_t row = result.row;
uint32_t col = result.col;
uint32_t len = 0;
LineIterator *it = begin_l_iter(editor->root, row);
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return result;
}
if (len > 0 && line[len - 1] == '\n')
--len;
bool iterator_ahead = true;
while (number > 0) {
if (col == 0) {
if (row == 0)
break;
if (iterator_ahead) {
prev_line(it, nullptr);
iterator_ahead = false;
}
line = nullptr;
while (row > 0) {
row--;
line = prev_line(it, &len);
if (!line)
break;
const Fold *fold = fold_for_line(editor->folds, row);
if (fold) {
while (line && row > fold->start) {
line = prev_line(it, &len);
row--;
}
line = nullptr;
continue;
}
break;
}
if (!line)
break;
if (len > 0 && line[len - 1] == '\n')
--len;
col = len;
} else {
uint32_t new_col = 0;
while (new_col < col) {
uint32_t inc =
grapheme_next_character_break_utf8(line + new_col, len - new_col);
if (new_col + inc >= col)
break;
new_col += inc;
}
col = new_col;
}
number--;
}
free(it->buffer);
free(it);
result.row = row;
result.col = col;
return result;
}
void cursor_down(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
uint32_t len;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line_content = next_line(it, &len);
if (line_content == nullptr)
return;
if (editor->cursor_preffered == UINT32_MAX)
editor->cursor_preffered =
get_visual_col_from_bytes(line_content, len, editor->cursor.col);
uint32_t visual_col = editor->cursor_preffered;
free(it->buffer);
free(it);
uint32_t target_row = editor->cursor.row;
while (number > 0 && target_row < editor->root->line_count - 1) {
target_row = next_unfolded_row(editor, target_row + 1);
if (target_row >= editor->root->line_count) {
target_row = editor->root->line_count - 1;
break;
}
number--;
}
it = begin_l_iter(editor->root, target_row);
line_content = next_line(it, &len);
if (!line_content)
return;
if (len > 0 && line_content[len - 1] == '\n')
--len;
editor->cursor.row = target_row;
editor->cursor.col = get_bytes_from_visual_col(line_content, len, visual_col);
free(it->buffer);
free(it);
}
void cursor_up(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0 || editor->cursor.row == 0)
return;
uint32_t len;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line_content = next_line(it, &len);
if (!line_content)
return;
if (editor->cursor_preffered == UINT32_MAX)
editor->cursor_preffered =
get_visual_col_from_bytes(line_content, len, editor->cursor.col);
uint32_t visual_col = editor->cursor_preffered;
free(it->buffer);
free(it);
uint32_t target_row = editor->cursor.row;
while (number > 0 && target_row > 0) {
target_row = prev_unfolded_row(editor, target_row - 1);
if (target_row == 0) {
number--;
break;
}
number--;
}
it = begin_l_iter(editor->root, target_row);
line_content = next_line(it, &len);
if (line_content) {
if (len > 0 && line_content[len - 1] == '\n')
--len;
editor->cursor.row = target_row;
editor->cursor.col =
get_bytes_from_visual_col(line_content, len, visual_col);
} else {
editor->cursor.row = 0;
editor->cursor.col = 0;
}
free(it->buffer);
free(it);
}
void cursor_right(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
editor->cursor = move_right(editor, editor->cursor, number);
editor->cursor_preffered = UINT32_MAX;
}
void cursor_left(Editor *editor, uint32_t number) {
if (!editor || !editor->root || number == 0)
return;
editor->cursor = move_left(editor, editor->cursor, number);
editor->cursor_preffered = UINT32_MAX;
}

274
src/editor/edit.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "lsp/lsp.h"
void edit_erase(Editor *editor, Coord pos, int64_t len) {
if (len == 0)
return;
if (len < 0) {
std::shared_lock lock_1(editor->knot_mtx);
uint32_t cursor_original =
line_to_byte(editor->root, editor->cursor.row, nullptr) +
editor->cursor.col;
TSPoint old_point = {pos.row, pos.col};
uint32_t byte_pos = line_to_byte(editor->root, pos.row, nullptr) + pos.col;
Coord point = move_left_pure(editor, pos, -len);
json lsp_range;
bool do_lsp = (editor->lsp != nullptr);
if (do_lsp) {
LineIterator *it = begin_l_iter(editor->root, point.row);
char *line = next_line(it, nullptr);
int utf16_start = 0;
if (line)
utf16_start = utf8_byte_offset_to_utf16(line, point.col);
free(it->buffer);
free(it);
it = begin_l_iter(editor->root, pos.row);
line = next_line(it, nullptr);
int utf16_end = 0;
if (line)
utf16_end = utf8_byte_offset_to_utf16(line, pos.col);
free(it->buffer);
free(it);
lsp_range = {{"start", {{"line", point.row}, {"character", utf16_start}}},
{"end", {{"line", pos.row}, {"character", utf16_end}}}};
}
uint32_t start = line_to_byte(editor->root, point.row, nullptr) + point.col;
if (cursor_original > start && cursor_original <= byte_pos) {
editor->cursor = point;
editor->cursor_preffered = UINT32_MAX;
} else if (cursor_original > byte_pos) {
uint32_t cursor_new = cursor_original - (byte_pos - start);
uint32_t new_col;
uint32_t new_row = byte_to_line(editor->root, cursor_new, &new_col);
editor->cursor = {new_row, new_col};
editor->cursor_preffered = UINT32_MAX;
}
lock_1.unlock();
uint32_t start_row = point.row;
uint32_t end_row = pos.row;
apply_line_deletion(editor, start_row + 1, end_row);
apply_hook_deletion(editor, start_row + 1, end_row);
std::unique_lock lock_2(editor->knot_mtx);
editor->root = erase(editor->root, start, byte_pos - start);
lock_2.unlock();
if (editor->ts.tree) {
TSInputEdit edit = {
.start_byte = start,
.old_end_byte = byte_pos,
.new_end_byte = start,
.start_point = {point.row, point.col},
.old_end_point = old_point,
.new_end_point = {point.row, point.col},
};
editor->edit_queue.push(edit);
}
if (do_lsp) {
if (editor->lsp->incremental_sync) {
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges",
json::array({{{"range", lsp_range}, {"text", ""}}})}}}};
lsp_send(editor->lsp, message, nullptr);
} else {
char *buf = read(editor->root, 0, editor->root->char_count);
std::string text(buf);
free(buf);
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges", json::array({{{"text", text}}})}}}};
lsp_send(editor->lsp, message, nullptr);
}
}
std::unique_lock lock_3(editor->spans.mtx);
apply_edit(editor->spans.spans, start, start - byte_pos);
if (editor->spans.mid_parse)
editor->spans.edits.push({start, start - byte_pos});
std::unique_lock lock_4(editor->def_spans.mtx);
apply_edit(editor->def_spans.spans, byte_pos, start - byte_pos);
} else {
std::shared_lock lock_1(editor->knot_mtx);
uint32_t cursor_original =
line_to_byte(editor->root, editor->cursor.row, nullptr) +
editor->cursor.col;
TSPoint old_point = {pos.row, pos.col};
uint32_t byte_pos = line_to_byte(editor->root, pos.row, nullptr) + pos.col;
Coord point = move_right_pure(editor, pos, len);
json lsp_range;
bool do_lsp = (editor->lsp != nullptr);
if (do_lsp) {
LineIterator *it = begin_l_iter(editor->root, pos.row);
char *line = next_line(it, nullptr);
int utf16_start = 0;
if (line)
utf16_start = utf8_byte_offset_to_utf16(line, pos.col);
free(it->buffer);
free(it);
it = begin_l_iter(editor->root, point.row);
line = next_line(it, nullptr);
int utf16_end = 0;
if (line)
utf16_end = utf8_byte_offset_to_utf16(line, point.col);
free(it->buffer);
free(it);
lsp_range = {{"start", {{"line", pos.row}, {"character", utf16_start}}},
{"end", {{"line", point.row}, {"character", utf16_end}}}};
}
uint32_t end = line_to_byte(editor->root, point.row, nullptr) + point.col;
if (cursor_original > byte_pos && cursor_original <= end) {
editor->cursor = pos;
editor->cursor_preffered = UINT32_MAX;
} else if (cursor_original > end) {
uint32_t cursor_new = cursor_original - (end - byte_pos);
uint32_t new_col;
uint32_t new_row = byte_to_line(editor->root, cursor_new, &new_col);
editor->cursor = {new_row, new_col};
editor->cursor_preffered = UINT32_MAX;
}
lock_1.unlock();
uint32_t start_row = pos.row;
uint32_t end_row = point.row;
apply_line_deletion(editor, start_row + 1, end_row);
apply_hook_deletion(editor, start_row + 1, end_row);
std::unique_lock lock_2(editor->knot_mtx);
editor->root = erase(editor->root, byte_pos, end - byte_pos);
lock_2.unlock();
if (editor->ts.tree) {
TSInputEdit edit = {
.start_byte = byte_pos,
.old_end_byte = end,
.new_end_byte = byte_pos,
.start_point = old_point,
.old_end_point = {point.row, point.col},
.new_end_point = old_point,
};
editor->edit_queue.push(edit);
}
if (do_lsp) {
if (editor->lsp->incremental_sync) {
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges",
json::array({{{"range", lsp_range}, {"text", ""}}})}}}};
lsp_send(editor->lsp, message, nullptr);
} else {
char *buf = read(editor->root, 0, editor->root->char_count);
std::string text(buf);
free(buf);
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges", json::array({{{"text", text}}})}}}};
lsp_send(editor->lsp, message, nullptr);
}
}
std::unique_lock lock_3(editor->spans.mtx);
apply_edit(editor->spans.spans, byte_pos, byte_pos - end);
if (editor->spans.mid_parse)
editor->spans.edits.push({byte_pos, byte_pos - end});
std::unique_lock lock_4(editor->def_spans.mtx);
apply_edit(editor->def_spans.spans, byte_pos, byte_pos - end);
}
}
void edit_insert(Editor *editor, Coord pos, char *data, uint32_t len) {
std::shared_lock lock_1(editor->knot_mtx);
uint32_t cursor_original =
line_to_byte(editor->root, editor->cursor.row, nullptr) +
editor->cursor.col;
uint32_t byte_pos = line_to_byte(editor->root, pos.row, nullptr) + pos.col;
TSPoint start_point = {pos.row, pos.col};
if (cursor_original > byte_pos) {
uint32_t cursor_new = cursor_original + len;
uint32_t new_col;
uint32_t new_row = byte_to_line(editor->root, cursor_new, &new_col);
editor->cursor = {new_row, new_col};
}
lock_1.unlock();
std::unique_lock lock_2(editor->knot_mtx);
editor->root = insert(editor->root, byte_pos, data, len);
lock_2.unlock();
uint32_t cols = 0;
uint32_t rows = 0;
for (uint32_t i = 0; i < len; i++) {
if (data[i] == '\n') {
rows++;
cols = 0;
} else {
cols++;
}
}
apply_line_insertion(editor, pos.row, rows);
apply_hook_insertion(editor, pos.row, rows);
if (editor->ts.tree) {
TSInputEdit edit = {
.start_byte = byte_pos,
.old_end_byte = byte_pos,
.new_end_byte = byte_pos + len,
.start_point = start_point,
.old_end_point = start_point,
.new_end_point = {start_point.row + rows,
(rows == 0) ? (start_point.column + cols) : cols},
};
editor->edit_queue.push(edit);
}
if (editor->lsp) {
if (editor->lsp->incremental_sync) {
lock_1.lock();
LineIterator *it = begin_l_iter(editor->root, pos.row);
char *line = next_line(it, nullptr);
int utf16_col = 0;
if (line)
utf16_col = utf8_byte_offset_to_utf16(line, pos.col);
free(it->buffer);
free(it);
lock_1.unlock();
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges",
json::array(
{{{"range",
{{"start", {{"line", pos.row}, {"character", utf16_col}}},
{"end", {{"line", pos.row}, {"character", utf16_col}}}}},
{"text", std::string(data, len)}}})}}}};
lsp_send(editor->lsp, message, nullptr);
} else {
char *buf = read(editor->root, 0, editor->root->char_count);
std::string text(buf);
free(buf);
json message = {
{"jsonrpc", "2.0"},
{"method", "textDocument/didChange"},
{"params",
{{"textDocument",
{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
{"contentChanges", json::array({{{"text", text}}})}}}};
lsp_send(editor->lsp, message, nullptr);
}
}
std::unique_lock lock_3(editor->spans.mtx);
apply_edit(editor->spans.spans, byte_pos, len);
if (editor->spans.mid_parse)
editor->spans.edits.push({byte_pos, len});
std::unique_lock lock_4(editor->def_spans.mtx);
apply_edit(editor->def_spans.spans, byte_pos, len);
}

79
src/editor/editor.cc Normal file
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#include "editor/editor.h"
#include "lsp/lsp.h"
#include "utils/utils.h"
Editor *new_editor(const char *filename_arg, Coord position, Coord size) {
Editor *editor = new Editor();
if (!editor)
return nullptr;
uint32_t len = 0;
std::string filename = path_abs(filename_arg);
char *str = load_file(filename.c_str(), &len);
if (!str) {
free_editor(editor);
return nullptr;
}
editor->filename = filename;
editor->uri = path_to_file_uri(filename);
editor->position = position;
editor->size = size;
editor->cursor_preffered = UINT32_MAX;
if (len == 0) {
free(str);
str = (char *)malloc(1);
*str = '\n';
len = 1;
}
editor->root = load(str, len, optimal_chunk_size(len));
free(str);
Language language = language_for_file(filename.c_str());
if (language.name != "unknown" && len <= (1024 * 128)) {
editor->ts.parser = ts_parser_new();
editor->ts.language = language.fn();
ts_parser_set_language(editor->ts.parser, editor->ts.language);
editor->ts.query_file =
get_exe_dir() + "/../grammar/" + language.name + ".scm";
request_add_to_lsp(language, editor);
}
return editor;
}
void free_tsset(TSSetMain *set) {
if (set->parser)
ts_parser_delete(set->parser);
if (set->tree)
ts_tree_delete(set->tree);
if (set->query)
ts_query_delete(set->query);
for (auto &inj : set->injections) {
if (inj.second.parser)
ts_parser_delete(inj.second.parser);
if (inj.second.query)
ts_query_delete(inj.second.query);
if (inj.second.tree)
ts_tree_delete(inj.second.tree);
}
}
void free_editor(Editor *editor) {
remove_from_lsp(editor);
free_tsset(&editor->ts);
free_rope(editor->root);
delete editor;
}
void save_file(Editor *editor) {
if (!editor || !editor->root)
return;
char *str = read(editor->root, 0, editor->root->char_count);
if (!str)
return;
std::ofstream out(editor->filename);
out.write(str, editor->root->char_count);
free(str);
json msg = {{"jsonrpc", "2.0"},
{"method", "textDocument/didSave"},
{"params", {{"textDocument", {{"uri", editor->uri}}}}}};
if (editor->lsp)
lsp_send(editor->lsp, msg, nullptr);
}

665
src/editor/events.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "lsp/lsp.h"
#include "main.h"
void handle_editor_event(Editor *editor, KeyEvent event) {
static std::chrono::steady_clock::time_point last_click_time =
std::chrono::steady_clock::now();
static uint32_t click_count = 0;
static Coord last_click_pos = {UINT32_MAX, UINT32_MAX};
Coord start = editor->cursor;
if (editor->hover_active)
editor->hover_active = false;
if (event.key_type == KEY_MOUSE) {
auto now = std::chrono::steady_clock::now();
auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(
now - last_click_time)
.count();
switch (event.mouse_state) {
case SCROLL:
switch (event.mouse_direction) {
case SCROLL_UP:
scroll_up(editor, 10);
ensure_cursor(editor);
break;
case SCROLL_DOWN:
scroll_down(editor, 10);
ensure_cursor(editor);
break;
case SCROLL_LEFT:
cursor_left(editor, 10);
break;
case SCROLL_RIGHT:
cursor_right(editor, 10);
break;
}
break;
case PRESS:
if (event.mouse_button == LEFT_BTN) {
Coord cur_pos = {event.mouse_x, event.mouse_y};
if (duration < 250 && last_click_pos == cur_pos)
click_count++;
else
click_count = 1;
last_click_time = now;
last_click_pos = cur_pos;
Coord p = editor_hit_test(editor, event.mouse_x, event.mouse_y);
if (p.row == UINT32_MAX && p.col == UINT32_MAX)
return;
editor->cursor_preffered = UINT32_MAX;
if (click_count == 1) {
editor->cursor = p;
editor->selection = p;
if (mode == SELECT) {
mode = NORMAL;
editor->selection_active = false;
}
} else if (click_count == 2) {
uint32_t prev_col, next_col;
word_boundaries(editor, editor->cursor, &prev_col, &next_col, nullptr,
nullptr);
if (editor->cursor < editor->selection)
editor->cursor = {editor->cursor.row, prev_col};
else
editor->cursor = {editor->cursor.row, next_col};
editor->cursor_preffered = UINT32_MAX;
editor->selection_type = WORD;
mode = SELECT;
editor->selection_active = true;
} else if (click_count >= 3) {
if (editor->cursor < editor->selection) {
editor->cursor = {p.row, 0};
} else {
uint32_t line_len;
LineIterator *it = begin_l_iter(editor->root, p.row);
char *line = next_line(it, &line_len);
if (!line)
return;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
free(it->buffer);
free(it);
editor->cursor = {p.row, line_len};
}
editor->cursor_preffered = UINT32_MAX;
editor->selection_type = LINE;
mode = SELECT;
editor->selection_active = true;
click_count = 3;
}
}
break;
case DRAG:
if (event.mouse_button == LEFT_BTN) {
Coord p = editor_hit_test(editor, event.mouse_x, event.mouse_y);
if (p.row == UINT32_MAX && p.col == UINT32_MAX)
return;
editor->cursor_preffered = UINT32_MAX;
mode = SELECT;
if (!editor->selection_active) {
editor->selection_active = true;
editor->selection_type = CHAR;
}
uint32_t prev_col, next_col, line_len;
switch (editor->selection_type) {
case CHAR:
editor->cursor = p;
break;
case WORD:
word_boundaries(editor, p, &prev_col, &next_col, nullptr, nullptr);
if (editor->cursor < editor->selection)
editor->cursor = {p.row, prev_col};
else
editor->cursor = {p.row, next_col};
break;
case LINE:
if (editor->cursor < editor->selection) {
editor->cursor = {p.row, 0};
} else {
LineIterator *it = begin_l_iter(editor->root, p.row);
char *line = next_line(it, &line_len);
if (!line)
return;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
free(it->buffer);
free(it);
editor->cursor = {p.row, line_len};
}
break;
}
}
break;
case RELEASE:
if (event.mouse_button == LEFT_BTN)
if (editor->cursor.row == editor->selection.row &&
editor->cursor.col == editor->selection.col) {
mode = NORMAL;
editor->selection_active = false;
}
break;
}
}
if (event.key_type == KEY_SPECIAL) {
switch (event.special_modifier) {
case 0:
switch (event.special_key) {
case KEY_DOWN:
cursor_down(editor, 1);
break;
case KEY_UP:
cursor_up(editor, 1);
break;
case KEY_LEFT:
cursor_left(editor, 1);
break;
case KEY_RIGHT:
cursor_right(editor, 1);
break;
}
break;
case CNTRL:
uint32_t prev_col, next_col;
word_boundaries(editor, editor->cursor, &prev_col, &next_col, nullptr,
nullptr);
switch (event.special_key) {
case KEY_DOWN:
cursor_down(editor, 5);
break;
case KEY_UP:
cursor_up(editor, 5);
break;
case KEY_LEFT:
editor->cursor_preffered = UINT32_MAX;
if (prev_col == editor->cursor.col)
cursor_left(editor, 1);
else
editor->cursor = {editor->cursor.row, prev_col};
break;
case KEY_RIGHT:
editor->cursor_preffered = UINT32_MAX;
if (next_col == editor->cursor.col)
cursor_right(editor, 1);
else
editor->cursor = {editor->cursor.row, next_col};
break;
}
break;
case ALT:
switch (event.special_key) {
case KEY_DOWN:
move_line_down(editor);
break;
case KEY_UP:
move_line_up(editor);
break;
case KEY_LEFT:
cursor_left(editor, 8);
break;
case KEY_RIGHT:
cursor_right(editor, 8);
break;
}
break;
}
}
switch (mode) {
case NORMAL:
if (event.key_type == KEY_CHAR && event.len == 1) {
switch (event.c[0]) {
case 'u':
if (editor->root->line_count > 0) {
editor->cursor.row = editor->root->line_count - 1;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
if (!it)
break;
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
line_len = count_clusters(line, line_len, 0, line_len);
free(it->buffer);
free(it);
editor->cursor.col = line_len;
editor->cursor_preffered = UINT32_MAX;
mode = SELECT;
editor->selection_active = true;
editor->selection = {0, 0};
editor->selection_type = LINE;
}
break;
case CTRL('h'):
editor->hover.scroll(-1);
editor->hover_active = true;
break;
case CTRL('l'):
editor->hover.scroll(1);
editor->hover_active = true;
break;
case 'h':
if (editor->lsp && editor->lsp->allow_hover) {
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line = next_line(it, nullptr);
if (!line) {
free(it->buffer);
free(it);
break;
}
uint32_t col = utf8_byte_offset_to_utf16(line, editor->cursor.col);
free(it->buffer);
free(it);
json hover_request = {
{"jsonrpc", "2.0"},
{"method", "textDocument/hover"},
{"params",
{{"textDocument", {{"uri", editor->uri}}},
{"position",
{{"line", editor->cursor.row}, {"character", col}}}}}};
LSPPending *pending = new LSPPending();
pending->editor = editor;
pending->method = "textDocument/hover";
pending->callback = [](Editor *editor, std::string, json hover) {
if (hover.contains("result") && !hover["result"].is_null()) {
auto &contents = hover["result"]["contents"];
std::string hover_text = "";
bool is_markup = false;
if (contents.is_object()) {
hover_text += contents["value"].get<std::string>();
is_markup = (contents["kind"].get<std::string>() == "markdown");
} else if (contents.is_array()) {
for (auto &block : contents) {
if (block.is_string()) {
hover_text += block.get<std::string>() + "\n";
} else if (block.is_object() && block.contains("language") &&
block.contains("value")) {
std::string lang = block["language"].get<std::string>();
std::string val = block["value"].get<std::string>();
is_markup = true;
hover_text += "```" + lang + "\n" + val + "\n```\n";
}
}
} else if (contents.is_string()) {
hover_text += contents.get<std::string>();
}
if (!hover_text.empty()) {
editor->hover.clear();
editor->hover.text = clean_text(hover_text);
editor->hover.is_markup = is_markup;
editor->hover.render_first();
editor->hover_active = true;
}
}
};
lsp_send(editor->lsp, hover_request, pending);
}
break;
case 'a':
mode = INSERT;
cursor_right(editor, 1);
if (start.row != editor->cursor.row)
cursor_left(editor, 1);
break;
case 'i':
mode = INSERT;
break;
case 'n':
mode = JUMPER;
editor->jumper_set = true;
break;
case 'm':
mode = JUMPER;
editor->jumper_set = false;
break;
case 'N':
for (uint8_t i = 0; i < 94; i++)
if (editor->hooks[i] == editor->cursor.row + 1) {
editor->hooks[i] = 0;
break;
}
break;
case 's':
case 'v':
mode = SELECT;
editor->selection_active = true;
editor->selection = editor->cursor;
editor->selection_type = CHAR;
break;
case ';':
case ':':
mode = RUNNER;
break;
case 0x7F:
cursor_left(editor, 1);
break;
case ' ':
cursor_right(editor, 1);
break;
case '\r':
case '\n':
cursor_down(editor, 1);
break;
case '\\':
case '|':
cursor_up(editor, 1);
break;
case CTRL('d'):
scroll_down(editor, 1);
ensure_cursor(editor);
break;
case CTRL('u'):
scroll_up(editor, 1);
ensure_cursor(editor);
break;
case '>':
case '.':
indent_line(editor, editor->cursor.row);
break;
case '<':
case ',':
dedent_line(editor, editor->cursor.row);
break;
case CTRL('s'):
save_file(editor);
break;
case CTRL(' '):
if (editor->lsp) {
json msg = {
{"jsonrpc", "2.0"},
{"method", "textDocument/completion"},
{
"params",
{
{
"textDocument",
{
{"uri", editor->uri},
},
},
{
"position",
{
{"line", editor->cursor.row},
{"character", editor->cursor.col},
},
},
{
"context",
{
{"triggerKind", 1},
},
},
},
},
};
LSPPending *pending = new LSPPending();
pending->editor = editor;
pending->method = "textDocument/completion";
pending->callback = [](Editor *editor, std::string, json completion) {
log("%s\n", completion.dump().c_str());
};
lsp_send(editor->lsp, msg, pending);
}
break;
case 'p':
uint32_t len;
char *text = get_from_clipboard(&len);
if (text) {
edit_insert(editor, editor->cursor, text, len);
uint32_t grapheme_len = count_clusters(text, len, 0, len);
cursor_right(editor, grapheme_len);
free(text);
}
break;
}
}
break;
case INSERT:
if (event.key_type == KEY_CHAR) {
if (event.len == 1) {
if (event.c[0] == '\t') {
edit_insert(editor, editor->cursor, (char *)" ", 2);
cursor_right(editor, 2);
} else if (event.c[0] == '\n' || event.c[0] == '\r') {
uint32_t line_len = 0;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line = next_line(it, &line_len);
bool closing = false;
if (line && line_len > 0 && line[line_len - 1] == '\n')
line_len--;
uint32_t indent = get_indent(editor, editor->cursor);
if (line) {
if (indent == 0)
indent = leading_indent(line, line_len);
closing = closing_after_cursor(line, line_len, editor->cursor.col);
}
free(it->buffer);
free(it);
uint32_t closing_indent =
indent >= INDENT_WIDTH ? indent - INDENT_WIDTH : 0;
std::string insert_text("\n");
insert_text.append(indent, ' ');
Coord new_cursor = {editor->cursor.row + 1, indent};
if (closing) {
insert_text.push_back('\n');
insert_text.append(closing_indent, ' ');
}
edit_insert(editor, editor->cursor, insert_text.data(),
insert_text.size());
editor->cursor = new_cursor;
editor->cursor_preffered = UINT32_MAX;
} else if (event.c[0] == CTRL('W')) {
uint32_t prev_col_byte, prev_col_cluster;
word_boundaries(editor, editor->cursor, &prev_col_byte, nullptr,
&prev_col_cluster, nullptr);
if (prev_col_byte == editor->cursor.col)
edit_erase(editor, editor->cursor, -1);
else
edit_erase(editor, editor->cursor, -(int64_t)prev_col_cluster);
} else if (isprint((unsigned char)(event.c[0]))) {
char c = event.c[0];
uint32_t col = editor->cursor.col;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
uint32_t len;
char *line = next_line(it, &len);
bool skip_insert = false;
if (line && col < len) {
char next = line[col];
if ((c == '}' && next == '}') || (c == ')' && next == ')') ||
(c == ']' && next == ']') || (c == '"' && next == '"') ||
(c == '\'' && next == '\'')) {
cursor_right(editor, 1);
skip_insert = true;
}
}
free(it->buffer);
free(it);
if (!skip_insert) {
char closing = 0;
switch (c) {
case '{':
closing = '}';
break;
case '(':
closing = ')';
break;
case '[':
closing = ']';
break;
case '"':
closing = '"';
break;
case '\'':
closing = '\'';
break;
}
if (closing) {
char pair[2] = {c, closing};
edit_insert(editor, editor->cursor, pair, 2);
cursor_right(editor, 1);
} else {
edit_insert(editor, editor->cursor, &c, 1);
cursor_right(editor, 1);
}
}
} else if (event.c[0] == 0x7F || event.c[0] == 0x08) {
Coord prev_pos = editor->cursor;
if (prev_pos.col > 0)
prev_pos.col--;
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
if (!it)
return;
char *line = next_line(it, nullptr);
char prev_char = line[prev_pos.col];
char next_char = line[editor->cursor.col];
free(it->buffer);
free(it);
bool is_pair = (prev_char == '{' && next_char == '}') ||
(prev_char == '(' && next_char == ')') ||
(prev_char == '[' && next_char == ']') ||
(prev_char == '"' && next_char == '"') ||
(prev_char == '\'' && next_char == '\'');
if (is_pair) {
edit_erase(editor, editor->cursor, 1);
edit_erase(editor, prev_pos, 1);
} else {
edit_erase(editor, editor->cursor, -1);
}
} else if (event.c[0] == 0x1B) {
Coord prev_pos = editor->cursor;
mode = NORMAL;
cursor_left(editor, 1);
if (prev_pos.row != editor->cursor.row)
cursor_right(editor, 1);
}
} else if (event.len > 1) {
edit_insert(editor, editor->cursor, event.c, event.len);
cursor_right(editor, 1);
}
} else if (event.key_type == KEY_SPECIAL &&
event.special_key == KEY_DELETE) {
switch (event.special_modifier) {
case 0:
edit_erase(editor, editor->cursor, 1);
break;
case CNTRL:
uint32_t next_col_byte, next_col_cluster;
word_boundaries(editor, editor->cursor, nullptr, &next_col_byte,
nullptr, &next_col_cluster);
if (next_col_byte == editor->cursor.col)
edit_erase(editor, editor->cursor, 1);
else
edit_erase(editor, editor->cursor, next_col_cluster);
break;
}
} else if (event.key_type == KEY_PASTE) {
if (event.c) {
edit_insert(editor, editor->cursor, event.c, event.len);
uint32_t grapheme_len =
count_clusters(event.c, event.len, 0, event.len);
cursor_right(editor, grapheme_len);
}
}
break;
case SELECT:
if (event.key_type == KEY_CHAR && event.len == 1) {
uint32_t len;
char *text;
Coord start;
switch (event.c[0]) {
case 'f':
if (editor->cursor.row != editor->selection.row) {
uint32_t start = MIN(editor->cursor.row, editor->selection.row);
uint32_t end = MAX(editor->cursor.row, editor->selection.row);
add_fold(editor, start, end);
}
cursor_left(editor, 1);
cursor_down(editor, 1);
editor->selection_active = false;
mode = NORMAL;
break;
case 0x1B:
case 's':
case 'v':
editor->selection_active = false;
mode = NORMAL;
break;
case 'y':
text = get_selection(editor, &len, nullptr);
copy_to_clipboard(text, len);
free(text);
editor->selection_active = false;
mode = NORMAL;
break;
case 'x':
text = get_selection(editor, &len, &start);
copy_to_clipboard(text, len);
len = count_clusters(text, len, 0, len);
edit_erase(editor, start, len);
free(text);
editor->selection_active = false;
mode = NORMAL;
break;
case 'p':
text = get_from_clipboard(&len);
if (text) {
Coord start, end;
if (editor->cursor >= editor->selection) {
start = editor->selection;
end = move_right(editor, editor->cursor, 1);
} else {
start = editor->cursor;
end = move_right(editor, editor->selection, 1);
}
uint32_t start_byte =
line_to_byte(editor->root, start.row, nullptr) + start.col;
uint32_t end_byte =
line_to_byte(editor->root, end.row, nullptr) + end.col;
edit_erase(editor, start, end_byte - start_byte);
edit_insert(editor, editor->cursor, text, len);
free(text);
}
editor->selection_active = false;
mode = NORMAL;
break;
}
}
break;
case JUMPER:
if (event.key_type == KEY_CHAR && event.len == 1 &&
(event.c[0] >= '!' && event.c[0] <= '~')) {
if (editor->jumper_set) {
for (uint8_t i = 0; i < 94; i++)
if (editor->hooks[i] == editor->cursor.row + 1) {
editor->hooks[i] = 0;
break;
}
editor->hooks[event.c[0] - '!'] = editor->cursor.row + 1;
} else {
uint32_t line = editor->hooks[event.c[0] - '!'];
if (line > 0) {
if (line_is_folded(editor->folds, --line))
break;
editor->cursor = {line, 0};
editor->cursor_preffered = UINT32_MAX;
}
}
}
mode = NORMAL;
break;
case RUNNER:
if (event.key_type == KEY_CHAR && event.len == 1) {
switch (event.c[0]) {
case 0x1B:
mode = NORMAL;
break;
}
}
break;
}
ensure_scroll(editor);
if ((event.key_type == KEY_CHAR || event.key_type == KEY_PASTE) && event.c)
free(event.c);
}

87
src/editor/indents.cc Normal file
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#include "editor/editor.h"
uint32_t leading_indent(const char *line, uint32_t len) {
uint32_t indent = 0;
for (uint32_t i = 0; i < len; i++) {
if (line[i] == ' ')
indent++;
else if (line[i] == '\t')
indent += INDENT_WIDTH;
else
break;
}
return indent;
}
uint32_t get_indent(Editor *editor, Coord cursor) {
if (!editor)
return 0;
LineIterator *it = begin_l_iter(editor->root, cursor.row);
next_line(it, nullptr);
uint32_t line_len;
char *line;
while ((line = prev_line(it, &line_len)) != nullptr) {
if (line_len == 0)
continue;
uint32_t indent = leading_indent(line, line_len);
free(it->buffer);
free(it);
return indent;
}
free(it->buffer);
free(it);
return 0;
}
bool closing_after_cursor(const char *line, uint32_t len, uint32_t col) {
uint32_t i = col;
while (i < len && (line[i] == ' ' || line[i] == '\t'))
i++;
if (i >= len)
return false;
return line[i] == '}' || line[i] == ']' || line[i] == ')';
}
void indent_line(Editor *editor, uint32_t row) {
if (!editor)
return;
LineIterator *it = begin_l_iter(editor->root, row);
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return;
}
char *spaces = (char *)malloc(INDENT_WIDTH);
memset(spaces, ' ', INDENT_WIDTH);
Coord cursor = editor->cursor;
edit_insert(editor, {row, 0}, spaces, INDENT_WIDTH);
editor->cursor = cursor;
free(spaces);
free(it->buffer);
free(it);
}
void dedent_line(Editor *editor, uint32_t row) {
if (!editor)
return;
LineIterator *it = begin_l_iter(editor->root, row);
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line) {
free(it->buffer);
free(it);
return;
}
uint32_t indent = leading_indent(line, line_len);
if (indent == 0) {
free(it->buffer);
free(it);
return;
}
uint32_t remove = indent >= INDENT_WIDTH ? INDENT_WIDTH : indent;
edit_erase(editor, {row, 0}, remove);
free(it->buffer);
free(it);
}

63
src/editor/lsp.cc Normal file
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#include "editor/editor.h"
void editor_lsp_handle(Editor *editor, json msg) {
if (msg.contains("method") &&
msg["method"] == "textDocument/publishDiagnostics") {
std::unique_lock lock(editor->v_mtx);
editor->warnings.clear();
json diagnostics = msg["params"]["diagnostics"];
for (size_t i = 0; i < diagnostics.size(); i++) {
json d = diagnostics[i];
VWarn w;
// HACK: convert back to utf-8 but as this is only visually affecting it
// is not worth getting the line string from the rope.
w.line = d["range"]["start"]["line"];
w.start = d["range"]["start"]["character"];
uint32_t end = d["range"]["end"]["character"];
if (d["range"]["end"]["line"] == w.line)
w.end = end;
std::string text = trim(d["message"].get<std::string>());
w.text_full = text;
auto pos = text.find('\n');
w.text = (pos == std::string::npos) ? text : text.substr(0, pos);
if (d.contains("source"))
w.source = d["source"].get<std::string>();
if (d.contains("code")) {
w.code = "[";
if (d["code"].is_string())
w.code += d["code"].get<std::string>() + "] ";
else if (d["code"].is_number())
w.code += std::to_string(d["code"].get<int>()) + "] ";
else
w.code.clear();
if (d.contains("codeDescription") &&
d["codeDescription"].contains("href"))
w.code += d["codeDescription"]["href"].get<std::string>();
}
if (d.contains("relatedInformation")) {
json related = d["relatedInformation"];
for (size_t j = 0; j < related.size(); j++) {
json rel = related[j];
std::string message = rel["message"].get<std::string>();
auto pos = message.find('\n');
message =
(pos == std::string::npos) ? message : message.substr(0, pos);
std::string uri =
percent_decode(rel["location"]["uri"].get<std::string>());
auto pos2 = uri.find_last_of('/');
if (pos2 != std::string::npos)
uri = uri.substr(pos2 + 1);
std::string row = std::to_string(
rel["location"]["range"]["start"]["line"].get<int>());
w.see_also.push_back(uri + ":" + row + ": " + message);
}
}
w.type = 1;
if (d.contains("severity"))
w.type = d["severity"].get<int>();
editor->warnings.push_back(w);
}
std::sort(editor->warnings.begin(), editor->warnings.end());
editor->warnings_dirty = true;
}
}

121
src/editor/move_line.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "main.h"
void move_line_up(Editor *editor) {
if (!editor || !editor->root || editor->cursor.row == 0)
return;
if (mode == NORMAL || mode == INSERT) {
uint32_t line_len, line_cluster_len;
std::shared_lock lock(editor->knot_mtx);
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line = next_line(it, &line_len);
if (!line) {
lock.unlock();
return;
}
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
line_cluster_len = count_clusters(line, line_len, 0, line_len);
uint32_t target_row = prev_unfolded_row(editor, editor->cursor.row - 1);
uint32_t up_by = editor->cursor.row - target_row;
if (up_by > 1)
up_by--;
lock.unlock();
Coord cursor = editor->cursor;
edit_erase(editor, {cursor.row, 0}, line_cluster_len);
edit_erase(editor, {cursor.row, 0}, -1);
edit_insert(editor, {cursor.row - up_by, 0}, (char *)"\n", 1);
edit_insert(editor, {cursor.row - up_by, 0}, line, line_len);
free(it->buffer);
free(it);
editor->cursor = {cursor.row - up_by, cursor.col};
} else if (mode == SELECT) {
uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
if (!selected_text)
return;
uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
0, end_byte - start_byte);
Coord cursor = editor->cursor;
Coord selection = editor->selection;
edit_erase(editor, {start_row, 0}, selected_len);
edit_insert(editor, {start_row - 1, 0}, selected_text,
end_byte - start_byte);
free(selected_text);
editor->cursor = {cursor.row - 1, cursor.col};
editor->selection = {selection.row - 1, selection.col};
}
}
void move_line_down(Editor *editor) {
if (!editor || !editor->root)
return;
if (mode == NORMAL || mode == INSERT) {
if (editor->cursor.row >= editor->root->line_count - 1)
return;
uint32_t line_len, line_cluster_len;
std::shared_lock lock(editor->knot_mtx);
LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
char *line = next_line(it, &line_len);
if (!line) {
lock.unlock();
return;
}
if (line_len && line[line_len - 1] == '\n')
line_len--;
line_cluster_len = count_clusters(line, line_len, 0, line_len);
uint32_t target_row = next_unfolded_row(editor, editor->cursor.row + 1);
if (target_row >= editor->root->line_count) {
free(line);
lock.unlock();
return;
}
uint32_t down_by = target_row - editor->cursor.row;
if (down_by > 1)
down_by--;
uint32_t ln;
line_to_byte(editor->root, editor->cursor.row + down_by - 1, &ln);
lock.unlock();
Coord cursor = editor->cursor;
edit_erase(editor, {cursor.row, 0}, line_cluster_len);
edit_erase(editor, {cursor.row, 0}, -1);
edit_insert(editor, {cursor.row + down_by, 0}, (char *)"\n", 1);
edit_insert(editor, {cursor.row + down_by, 0}, line, line_len);
free(it->buffer);
free(it);
editor->cursor = {cursor.row + down_by, cursor.col};
} else if (mode == SELECT) {
if (editor->cursor.row >= editor->root->line_count - 1 ||
editor->selection.row >= editor->root->line_count - 1)
return;
std::shared_lock lock(editor->knot_mtx);
uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
uint32_t target_row = next_unfolded_row(editor, end_row + 1);
if (target_row >= editor->root->line_count)
return;
uint32_t down_by = target_row - end_row;
if (down_by > 1)
down_by--;
uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
lock.unlock();
if (!selected_text)
return;
uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
0, end_byte - start_byte);
Coord cursor = editor->cursor;
Coord selection = editor->selection;
edit_erase(editor, {start_row, 0}, selected_len);
edit_insert(editor, {start_row + down_by, 0}, selected_text,
end_byte - start_byte);
free(selected_text);
editor->cursor = {cursor.row + down_by, cursor.col};
editor->selection = {selection.row + down_by, selection.col};
}
}

489
src/editor/renderer.cc Normal file
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#include "editor/editor.h"
#include "editor/folds.h"
#include "main.h"
void render_editor(Editor *editor) {
uint32_t sel_start = 0, sel_end = 0;
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
uint32_t render_width = editor->size.col - numlen;
uint32_t render_x = editor->position.col + numlen;
std::vector<std::pair<uint32_t, char>> v;
for (size_t i = 0; i < 94; ++i)
if (editor->hooks[i] != 0)
v.push_back({editor->hooks[i], '!' + i});
std::sort(v.begin(), v.end());
auto hook_it = v.begin();
while (hook_it != v.end() && hook_it->first <= editor->scroll.row)
++hook_it;
std::unique_lock warn_lock(editor->v_mtx);
auto warn_it = editor->warnings.begin();
while (warn_it != editor->warnings.end() &&
warn_it->line < editor->scroll.row)
++warn_it;
std::shared_lock knot_lock(editor->knot_mtx);
if (editor->selection_active) {
Coord start, end;
if (editor->cursor >= editor->selection) {
uint32_t prev_col, next_col;
switch (editor->selection_type) {
case CHAR:
start = editor->selection;
end = move_right(editor, editor->cursor, 1);
break;
case WORD:
word_boundaries(editor, editor->selection, &prev_col, &next_col,
nullptr, nullptr);
start = {editor->selection.row, prev_col};
end = editor->cursor;
break;
case LINE:
start = {editor->selection.row, 0};
end = editor->cursor;
break;
}
} else {
start = editor->cursor;
uint32_t prev_col, next_col, line_len;
switch (editor->selection_type) {
case CHAR:
end = move_right(editor, editor->selection, 1);
break;
case WORD:
word_boundaries(editor, editor->selection, &prev_col, &next_col,
nullptr, nullptr);
end = {editor->selection.row, next_col};
break;
case LINE:
LineIterator *it = begin_l_iter(editor->root, editor->selection.row);
char *line = next_line(it, &line_len);
if (!line)
return;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
free(it->buffer);
free(it);
end = {editor->selection.row, line_len};
break;
}
}
sel_start = line_to_byte(editor->root, start.row, nullptr) + start.col;
sel_end = line_to_byte(editor->root, end.row, nullptr) + end.col;
}
Coord cursor = {UINT32_MAX, UINT32_MAX};
uint32_t line_index = editor->scroll.row;
SpanCursor span_cursor(editor->spans);
SpanCursor def_span_cursor(editor->def_spans);
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
uint32_t rendered_rows = 0;
uint32_t global_byte_offset = line_to_byte(editor->root, line_index, nullptr);
span_cursor.sync(global_byte_offset);
def_span_cursor.sync(global_byte_offset);
while (rendered_rows < editor->size.row) {
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
update(editor->position.row + rendered_rows, editor->position.col, "",
0xAAAAAA, 0, 0);
char buf[16];
int len = snprintf(buf, sizeof(buf), "%*u ", numlen - 3, fold->start + 1);
uint32_t num_color =
editor->cursor.row == fold->start ? 0xFFFFFF : 0x555555;
for (int i = 0; i < len; i++)
update(editor->position.row + rendered_rows,
editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color, 0,
0);
const char marker[15] = "... folded ...";
uint32_t i = 0;
for (; i < 14 && i < render_width; i++)
update(rendered_rows, i + render_x, (char[2]){marker[i], 0}, 0xc6c6c6,
0, 0);
for (; i < render_width; i++)
update(rendered_rows, i + render_x, " ", 0xc6c6c6, 0, 0);
rendered_rows++;
uint32_t skip_until = fold->end;
while (line_index <= skip_until) {
if (hook_it != v.end() && hook_it->first == line_index + 1)
hook_it++;
while (warn_it != editor->warnings.end() && warn_it->line == line_index)
++warn_it;
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
break;
global_byte_offset += line_len;
if (line_len > 0 && line[line_len - 1] == '\n')
global_byte_offset--;
global_byte_offset++;
line_index++;
}
continue;
}
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
break;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
uint32_t content_end = line_len;
while (content_end > 0 &&
(line[content_end - 1] == ' ' || line[content_end - 1] == '\t'))
content_end--;
uint32_t content_start = 0;
while (content_start < line_len &&
(line[content_start] == ' ' || line[content_start] == '\t'))
content_start++;
std::vector<VWarn> line_warnings;
while (warn_it != editor->warnings.end() && warn_it->line == line_index) {
line_warnings.push_back(*warn_it);
++warn_it;
}
uint32_t current_byte_offset = 0;
if (rendered_rows == 0)
current_byte_offset += editor->scroll.col;
while (current_byte_offset < line_len && rendered_rows < editor->size.row) {
uint32_t color = editor->cursor.row == line_index ? 0x222222 : 0;
if (current_byte_offset == 0 || rendered_rows == 0) {
const char *hook = nullptr;
char h[2] = {0, 0};
if (hook_it != v.end() && hook_it->first == line_index + 1) {
h[0] = hook_it->second;
hook = h;
hook_it++;
}
update(editor->position.row + rendered_rows, editor->position.col, hook,
0xAAAAAA, 0, 0);
char buf[16];
int len =
snprintf(buf, sizeof(buf), "%*u ", numlen - 3, line_index + 1);
uint32_t num_color =
editor->cursor.row == line_index ? 0xFFFFFF : 0x555555;
for (int i = 0; i < len; i++)
update(editor->position.row + rendered_rows,
editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color,
0, 0);
} else {
for (uint32_t i = 0; i < numlen; i++)
update(editor->position.row + rendered_rows, editor->position.col + i,
" ", 0, 0, 0);
}
uint32_t col = 0;
uint32_t local_render_offset = 0;
uint32_t line_left = line_len - current_byte_offset;
while (line_left > 0 && col < render_width) {
if (line_index == editor->cursor.row &&
editor->cursor.col == (current_byte_offset + local_render_offset)) {
cursor.row = editor->position.row + rendered_rows;
cursor.col = render_x + col;
}
uint32_t absolute_byte_pos =
global_byte_offset + current_byte_offset + local_render_offset;
Highlight *hl = span_cursor.get_highlight(absolute_byte_pos);
Highlight *def_hl = def_span_cursor.get_highlight(absolute_byte_pos);
uint32_t fg = hl ? hl->fg : 0xFFFFFF;
uint32_t bg = hl ? hl->bg : 0;
uint8_t fl = hl ? hl->flags : 0;
if (def_hl) {
if (def_hl->fg != 0)
fg = def_hl->fg;
if (def_hl->bg != 0)
bg = def_hl->bg;
fl |= def_hl->flags;
}
if (editor->selection_active && absolute_byte_pos >= sel_start &&
absolute_byte_pos < sel_end)
bg = 0x555555;
uint32_t u_color = 0;
for (const auto &w : line_warnings) {
if (w.start <= current_byte_offset + local_render_offset &&
current_byte_offset + local_render_offset < w.end) {
switch (w.type) {
case 1:
u_color = 0xff0000;
fl |= CF_UNDERLINE;
break;
case 2:
u_color = 0xffff00;
fl |= CF_UNDERLINE;
break;
case 3:
u_color = 0xff00ff;
fl |= CF_UNDERLINE;
break;
case 4:
u_color = 0xA0A0A0;
fl |= CF_UNDERLINE;
break;
}
}
}
uint32_t cluster_len = grapheme_next_character_break_utf8(
line + current_byte_offset + local_render_offset, line_left);
std::string cluster(line + current_byte_offset + local_render_offset,
cluster_len);
int width = display_width(cluster.c_str(), cluster_len);
if (col + width > render_width)
break;
if (current_byte_offset + local_render_offset >= content_start &&
current_byte_offset + local_render_offset < content_end) {
update(editor->position.row + rendered_rows, render_x + col,
cluster.c_str(), fg, bg | color, fl, u_color);
} else {
if (cluster[0] == ' ') {
update(editor->position.row + rendered_rows, render_x + col, "·",
0x282828, bg | color, fl, u_color);
} else {
update(editor->position.row + rendered_rows, render_x + col, "-> ",
0x282828, bg | color, (fl & ~CF_BOLD) | CF_ITALIC, u_color);
}
}
local_render_offset += cluster_len;
line_left -= cluster_len;
col += width;
while (width-- > 1)
update(editor->position.row + rendered_rows, render_x + col - width,
"\x1b", fg, bg | color, fl);
}
if (line_index == editor->cursor.row &&
editor->cursor.col == (current_byte_offset + local_render_offset)) {
cursor.row = editor->position.row + rendered_rows;
cursor.col = render_x + col;
}
if (editor->selection_active &&
global_byte_offset + line_len + 1 > sel_start &&
global_byte_offset + line_len + 1 <= sel_end && col < render_width) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0x555555 | color, 0);
col++;
}
if (!line_warnings.empty() && line_left == 0) {
VWarn warn = line_warnings.front();
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
color, 0);
col++;
for (size_t i = 0; i < line_warnings.size(); i++) {
if (line_warnings[i].type < warn.type)
warn = line_warnings[i];
std::string err_sym = " ";
uint32_t fg_color = 0;
switch (line_warnings[i].type) {
case 1:
err_sym = "";
fg_color = 0xFF0000;
goto final;
case 2:
err_sym = "";
fg_color = 0xFFFF00;
goto final;
case 3:
err_sym = "";
fg_color = 0xFF00FF;
goto final;
case 4:
err_sym = "";
fg_color = 0xAAAAAA;
goto final;
final:
if (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col,
err_sym, fg_color, color, 0);
col++;
update(editor->position.row + rendered_rows, render_x + col, " ",
fg_color, color, 0);
col++;
}
}
}
if (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0 | color, 0);
col++;
}
size_t warn_idx = 0;
uint32_t fg_color = 0;
switch (warn.type) {
case 1:
fg_color = 0xFF0000;
break;
case 2:
fg_color = 0xFFFF00;
break;
case 3:
fg_color = 0xFF00FF;
break;
case 4:
fg_color = 0xAAAAAA;
break;
}
while (col < render_width && warn_idx < warn.text.length()) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
warn.text.c_str() + warn_idx, warn.text.length() - warn_idx);
std::string cluster = warn.text.substr(warn_idx, cluster_len);
int width = display_width(cluster.c_str(), cluster_len);
if (col + width > render_width)
break;
update(editor->position.row + rendered_rows, render_x + col,
cluster.c_str(), fg_color, color, 0);
col += width;
warn_idx += cluster_len;
while (width-- > 1)
update(editor->position.row + rendered_rows, render_x + col - width,
"\x1b", fg_color, color, 0);
}
line_warnings.clear();
}
while (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0 | color, 0);
col++;
}
rendered_rows++;
current_byte_offset += local_render_offset;
}
if (line_len == 0 ||
(current_byte_offset >= line_len && rendered_rows == 0)) {
uint32_t color = editor->cursor.row == line_index ? 0x222222 : 0;
const char *hook = nullptr;
char h[2] = {0, 0};
if (hook_it != v.end() && hook_it->first == line_index + 1) {
h[0] = hook_it->second;
hook = h;
hook_it++;
}
update(editor->position.row + rendered_rows, editor->position.col, hook,
0xAAAAAA, 0, 0);
char buf[16];
int len = snprintf(buf, sizeof(buf), "%*u ", numlen - 3, line_index + 1);
uint32_t num_color =
editor->cursor.row == line_index ? 0xFFFFFF : 0x555555;
for (int i = 0; i < len; i++)
update(editor->position.row + rendered_rows,
editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color, 0,
0);
if (editor->cursor.row == line_index) {
cursor.row = editor->position.row + rendered_rows;
cursor.col = render_x;
}
uint32_t col = 0;
if (editor->selection_active &&
global_byte_offset + line_len + 1 > sel_start &&
global_byte_offset + line_len + 1 <= sel_end) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0x555555 | color, 0);
col++;
}
if (!line_warnings.empty()) {
VWarn warn = line_warnings.front();
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
color, 0);
col++;
for (size_t i = 0; i < line_warnings.size(); i++) {
if (line_warnings[i].type < warn.type)
warn = line_warnings[i];
std::string err_sym = " ";
uint32_t fg_color = 0;
switch (line_warnings[i].type) {
case 1:
err_sym = "";
fg_color = 0xFF0000;
goto final2;
case 2:
err_sym = "";
fg_color = 0xFFFF00;
goto final2;
case 3:
err_sym = "";
fg_color = 0xFF00FF;
goto final2;
case 4:
err_sym = "";
fg_color = 0xAAAAAA;
goto final2;
final2:
if (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col,
err_sym, fg_color, color, 0);
col++;
update(editor->position.row + rendered_rows, render_x + col, " ",
fg_color, color, 0);
col++;
}
}
}
if (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0 | color, 0);
col++;
}
size_t warn_idx = 0;
uint32_t fg_color = 0;
switch (warn.type) {
case 1:
fg_color = 0xFF0000;
break;
case 2:
fg_color = 0xFFFF00;
break;
case 3:
fg_color = 0xFF00FF;
break;
case 4:
fg_color = 0xAAAAAA;
break;
}
while (col < render_width && warn_idx < warn.text.length()) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
warn.text.c_str() + warn_idx, warn.text.length() - warn_idx);
std::string cluster = warn.text.substr(warn_idx, cluster_len);
int width = display_width(cluster.c_str(), cluster_len);
if (col + width > render_width)
break;
update(editor->position.row + rendered_rows, render_x + col,
cluster.c_str(), fg_color, color, 0);
col += width;
warn_idx += cluster_len;
while (width-- > 1)
update(editor->position.row + rendered_rows, render_x + col - width,
"\x1b", fg_color, color, 0);
}
}
while (col < render_width) {
update(editor->position.row + rendered_rows, render_x + col, " ", 0,
0 | color, 0);
col++;
}
rendered_rows++;
}
global_byte_offset += line_len + 1;
line_index++;
}
if (cursor.row != UINT32_MAX && cursor.col != UINT32_MAX) {
int type = 0;
switch (mode) {
case NORMAL:
type = BLOCK;
break;
case INSERT:
type = CURSOR;
break;
case JUMPER:
case SELECT:
type = UNDERLINE;
break;
}
set_cursor(cursor.row, cursor.col, type, true);
if (editor->hover_active)
editor->hover.render(cursor);
else if (editor->diagnostics_active)
editor->diagnostics.render(cursor);
}
while (rendered_rows < editor->size.row) {
for (uint32_t col = 0; col < editor->size.col; col++)
update(editor->position.row + rendered_rows, editor->position.col + col,
" ", 0xFFFFFF, 0, 0);
rendered_rows++;
}
free(it->buffer);
free(it);
}

234
src/editor/scroll.cc Normal file
View File

@@ -0,0 +1,234 @@
#include "editor/editor.h"
#include "editor/folds.h"
void scroll_up(Editor *editor, int32_t number) {
if (!editor || number == 0)
return;
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
uint32_t render_width = editor->size.col - numlen;
uint32_t line_index = editor->scroll.row;
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
uint32_t len;
char *line = next_line(it, &len);
if (!line) {
free(it->buffer);
free(it);
return;
}
if (len > 0 && line[len - 1] == '\n')
len--;
uint32_t current_byte_offset = 0;
uint32_t col = 0;
std::vector<uint32_t> segment_starts;
segment_starts.reserve(16);
if (current_byte_offset < editor->scroll.col)
segment_starts.push_back(0);
while (current_byte_offset < editor->scroll.col &&
current_byte_offset < len) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
line + current_byte_offset, len - current_byte_offset);
int width = display_width(line + current_byte_offset, cluster_len);
if (col + width > render_width) {
segment_starts.push_back(current_byte_offset);
col = 0;
}
current_byte_offset += cluster_len;
col += width;
}
for (auto it_seg = segment_starts.rbegin(); it_seg != segment_starts.rend();
++it_seg) {
if (--number == 0) {
editor->scroll = {line_index, *it_seg};
free(it->buffer);
free(it);
return;
}
}
line = prev_line(it, &len);
if (!line) {
editor->scroll = {0, 0};
free(it->buffer);
free(it);
return;
}
do {
line_index--;
line = prev_line(it, &len);
if (!line) {
editor->scroll = {0, 0};
free(it->buffer);
free(it);
return;
}
const Fold *fold = fold_for_line(editor->folds, line_index);
if (fold) {
while (line && line_index > fold->start) {
free(line);
line = prev_line(it, &len);
line_index--;
if (!line) {
editor->scroll = {0, 0};
free(it->buffer);
free(it);
return;
}
}
if (--number == 0) {
editor->scroll = {fold->start, 0};
free(it->buffer);
free(it);
return;
}
if (fold->start == 0) {
editor->scroll = {0, 0};
free(it->buffer);
free(it);
return;
}
line_index = fold->start - 1;
line = prev_line(it, &len);
if (!line) {
editor->scroll = {0, 0};
free(it->buffer);
free(it);
return;
}
continue;
}
if (len > 0 && line[len - 1] == '\n')
len--;
current_byte_offset = 0;
col = 0;
std::vector<uint32_t> segment_starts;
segment_starts.reserve(16);
segment_starts.push_back(0);
while (current_byte_offset < len) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
line + current_byte_offset, len - current_byte_offset);
int width = display_width(line + current_byte_offset, cluster_len);
if (col + width > render_width) {
segment_starts.push_back(current_byte_offset);
col = 0;
}
current_byte_offset += cluster_len;
col += width;
}
for (auto it_seg = segment_starts.rbegin(); it_seg != segment_starts.rend();
++it_seg) {
if (--number == 0) {
editor->scroll = {line_index, *it_seg};
free(it->buffer);
free(it);
return;
}
}
} while (number > 0);
free(it->buffer);
free(it);
}
void scroll_down(Editor *editor, uint32_t number) {
if (!editor || number == 0)
return;
uint32_t numlen =
EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
uint32_t render_width = editor->size.col - numlen;
uint32_t line_index = editor->scroll.row;
LineIterator *it = begin_l_iter(editor->root, line_index);
if (!it)
return;
const uint32_t max_visual_lines = editor->size.row;
Coord *scroll_queue = (Coord *)malloc(sizeof(Coord) * max_visual_lines);
uint32_t q_head = 0;
uint32_t q_size = 0;
uint32_t visual_seen = 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;
}
visual_seen++;
if (visual_seen >= number + max_visual_lines) {
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) {
free(scroll_queue);
free(it->buffer);
free(it);
return;
}
line_index++;
}
continue;
}
uint32_t line_len;
char *line = next_line(it, &line_len);
if (!line)
break;
if (line_len && line[line_len - 1] == '\n')
line_len--;
uint32_t current_byte_offset = 0;
if (first_visual_line) {
current_byte_offset += editor->scroll.col;
first_visual_line = false;
}
while (current_byte_offset < line_len ||
(line_len == 0 && current_byte_offset == 0)) {
Coord coord = {line_index, current_byte_offset};
if (q_size < max_visual_lines) {
scroll_queue[(q_head + q_size) % max_visual_lines] = coord;
q_size++;
} else {
scroll_queue[q_head] = coord;
q_head = (q_head + 1) % max_visual_lines;
}
visual_seen++;
if (visual_seen >= number + max_visual_lines) {
editor->scroll = scroll_queue[q_head];
free(scroll_queue);
free(it->buffer);
free(it);
return;
}
uint32_t col = 0;
uint32_t local_render_offset = 0;
uint32_t left = line_len - current_byte_offset;
while (left > 0 && col < render_width) {
uint32_t cluster_len = grapheme_next_character_break_utf8(
line + current_byte_offset + local_render_offset, left);
int width = display_width(
line + current_byte_offset + local_render_offset, cluster_len);
if (col + width > render_width)
break;
local_render_offset += cluster_len;
left -= cluster_len;
col += width;
}
current_byte_offset += local_render_offset;
if (line_len == 0)
break;
}
line_index++;
}
if (q_size > 0) {
uint32_t advance = (q_size > number) ? number : (q_size - 1);
editor->scroll = scroll_queue[(q_head + advance) % max_visual_lines];
}
free(it->buffer);
free(it);
free(scroll_queue);
}

58
src/editor/selection.cc Normal file
View File

@@ -0,0 +1,58 @@
#include "editor/editor.h"
char *get_selection(Editor *editor, uint32_t *out_len, Coord *out_start) {
std::shared_lock lock(editor->knot_mtx);
Coord start, end;
if (editor->cursor >= editor->selection) {
uint32_t prev_col, next_col;
switch (editor->selection_type) {
case CHAR:
start = editor->selection;
end = move_right(editor, editor->cursor, 1);
break;
case WORD:
word_boundaries(editor, editor->selection, &prev_col, &next_col, nullptr,
nullptr);
start = {editor->selection.row, prev_col};
end = editor->cursor;
break;
case LINE:
start = {editor->selection.row, 0};
end = editor->cursor;
break;
}
} else {
start = editor->cursor;
uint32_t prev_col, next_col, line_len;
switch (editor->selection_type) {
case CHAR:
end = move_right(editor, editor->selection, 1);
break;
case WORD:
word_boundaries(editor, editor->selection, &prev_col, &next_col, nullptr,
nullptr);
end = {editor->selection.row, next_col};
break;
case LINE:
LineIterator *it = begin_l_iter(editor->root, editor->selection.row);
char *line = next_line(it, &line_len);
if (!line)
return nullptr;
if (line_len > 0 && line[line_len - 1] == '\n')
line_len--;
end = {editor->selection.row, line_len};
free(it->buffer);
free(it);
break;
}
}
if (out_start)
*out_start = start;
uint32_t start_byte =
line_to_byte(editor->root, start.row, nullptr) + start.col;
uint32_t end_byte = line_to_byte(editor->root, end.row, nullptr) + end.col;
char *text = read(editor->root, start_byte, end_byte - start_byte);
if (out_len)
*out_len = end_byte - start_byte;
return text;
}

90
src/editor/worker.cc Normal file
View File

@@ -0,0 +1,90 @@
#include "editor/editor.h"
#include "ts/ts.h"
static Highlight HL_UNDERLINE = {0, 0, CF_UNDERLINE, UINT8_MAX - 1};
void hover_diagnostic(Editor *editor) {
std::shared_lock lock(editor->v_mtx);
static uint32_t last_line = UINT32_MAX;
if (last_line == editor->cursor.row && !editor->warnings_dirty)
return;
VWarn dummy;
dummy.line = editor->cursor.row;
editor->warnings_dirty = false;
last_line = editor->cursor.row;
auto first =
std::lower_bound(editor->warnings.begin(), editor->warnings.end(), dummy);
auto last =
std::upper_bound(editor->warnings.begin(), editor->warnings.end(), dummy);
std::vector<VWarn> warnings_at_line(first, last);
if (warnings_at_line.size() == 0) {
editor->diagnostics_active = false;
return;
}
editor->diagnostics.clear();
editor->diagnostics.warnings.swap(warnings_at_line);
editor->diagnostics.render_first();
editor->diagnostics_active = true;
}
void editor_worker(Editor *editor) {
if (!editor || !editor->root)
return;
if (editor->root->char_count > (1024 * 200))
return;
if (editor->ts.query_file != "" && !editor->ts.query)
editor->ts.query = load_query(editor->ts.query_file.c_str(), &editor->ts);
if (editor->ts.parser && editor->ts.query)
ts_collect_spans(editor);
uint32_t prev_col, next_col;
word_boundaries_exclusive(editor, editor->cursor, &prev_col, &next_col);
std::unique_lock lock(editor->def_spans.mtx);
editor->def_spans.spans.clear();
if (next_col - prev_col > 0 && next_col - prev_col < 256 - 4) {
std::shared_lock lockk(editor->knot_mtx);
uint32_t offset = line_to_byte(editor->root, editor->cursor.row, nullptr);
char *word = read(editor->root, offset + prev_col, next_col - prev_col);
lockk.unlock();
if (word) {
char buf[256];
snprintf(buf, sizeof(buf), "\\b%s\\b", word);
std::vector<std::pair<size_t, size_t>> results =
search_rope(editor->root, buf);
for (const auto &match : results) {
Span s;
s.start = match.first;
s.end = match.first + match.second;
s.hl = &HL_UNDERLINE;
editor->def_spans.spans.push_back(s);
}
free(word);
}
}
uint8_t top = 0;
static Highlight *hl_s = (Highlight *)calloc(200, sizeof(Highlight));
if (!hl_s)
exit(ENOMEM);
std::shared_lock lockk(editor->knot_mtx);
std::vector<std::pair<size_t, size_t>> results =
search_rope(editor->root, "(0x|#)[0-9a-fA-F]{6}");
for (int i = 0; i < results.size() && top < 200; i++) {
Span s;
s.start = results[i].first;
s.end = results[i].first + results[i].second;
char *buf = read(editor->root, s.start, s.end - s.start);
int x = buf[0] == '#' ? 1 : 2;
uint32_t bg = HEX(buf + x);
free(buf);
uint8_t r = bg >> 16, g = (bg >> 8) & 0xFF, b = bg & 0xFF;
double luminance = 0.299 * r + 0.587 * g + 0.114 * b;
uint32_t fg = (luminance > 128) ? 0x010101 : 0xFEFEFE;
hl_s[top] = {fg, bg, CF_BOLD, UINT8_MAX};
s.hl = &hl_s[top];
editor->def_spans.spans.push_back(s);
top++;
}
std::sort(editor->def_spans.spans.begin(), editor->def_spans.spans.end());
lock.unlock();
lockk.unlock();
hover_diagnostic(editor);
}