746 lines
24 KiB
C++
746 lines
24 KiB
C++
extern "C" {
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#include "../libs/libgrapheme/grapheme.h"
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}
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#include "../include/editor.h"
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#include "../include/lsp.h"
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#include "../include/main.h"
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#include "../include/utils.h"
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uint32_t scan_left(const char *line, uint32_t len, uint32_t off) {
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if (off > len)
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off = len;
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uint32_t i = off;
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while (i > 0) {
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unsigned char c = (unsigned char)line[i - 1];
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if ((c & 0x80) != 0)
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break;
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if (!((c == '_') || (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z')))
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break;
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--i;
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}
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return i;
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}
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uint32_t scan_right(const char *line, uint32_t len, uint32_t off) {
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if (off > len)
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off = len;
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uint32_t i = off;
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while (i < len) {
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unsigned char c = (unsigned char)line[i];
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if ((c & 0x80) != 0)
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break;
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if (!((c == '_') || (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') ||
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(c >= 'a' && c <= 'z')))
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break;
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++i;
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}
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return i;
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}
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void word_boundaries_exclusive(Editor *editor, Coord coord, uint32_t *prev_col,
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uint32_t *next_col) {
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if (!editor)
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return;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, coord.row);
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if (!it)
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return;
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uint32_t line_len;
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char *line = next_line(it, &line_len);
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if (!line)
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return;
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if (line_len && line[line_len - 1] == '\n')
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line_len--;
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uint32_t col = coord.col;
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if (col > line_len)
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col = line_len;
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uint32_t left = scan_left(line, line_len, col);
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uint32_t right = scan_right(line, line_len, col);
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if (prev_col)
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*prev_col = left;
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if (next_col)
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*next_col = right;
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free(it->buffer);
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free(it);
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}
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uint32_t word_jump_right(const char *line, size_t len, uint32_t pos) {
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if (pos >= len)
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return len;
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size_t next = grapheme_next_word_break_utf8(line + pos, len - pos);
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return static_cast<uint32_t>(pos + next);
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}
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uint32_t word_jump_left(const char *line, size_t len, uint32_t col) {
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if (col == 0)
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return 0;
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size_t pos = 0;
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size_t last = 0;
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size_t cursor = col;
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while (pos < len) {
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size_t next = pos + grapheme_next_word_break_utf8(line + pos, len - pos);
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if (next >= cursor)
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break;
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last = next;
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pos = next;
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}
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return static_cast<uint32_t>(last);
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}
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void word_boundaries(Editor *editor, Coord coord, uint32_t *prev_col,
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uint32_t *next_col, uint32_t *prev_clusters,
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uint32_t *next_clusters) {
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if (!editor)
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return;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, coord.row);
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if (!it)
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return;
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uint32_t line_len;
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char *line = next_line(it, &line_len);
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if (!line)
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return;
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if (line_len && line[line_len - 1] == '\n')
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line_len--;
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size_t col = coord.col;
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if (col > line_len)
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col = line_len;
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size_t left = word_jump_left(line, line_len, col);
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size_t right = word_jump_right(line, line_len, col);
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if (prev_col)
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*prev_col = static_cast<uint32_t>(left);
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if (next_col)
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*next_col = static_cast<uint32_t>(right);
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if (prev_clusters)
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*prev_clusters = count_clusters(line, line_len, left, col);
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if (next_clusters)
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*next_clusters = count_clusters(line, line_len, col, right);
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free(it->buffer);
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free(it);
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}
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Coord editor_hit_test(Editor *editor, uint32_t x, uint32_t y) {
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if (mode == INSERT)
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x++;
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uint32_t numlen =
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EXTRA_META + static_cast<int>(std::log10(editor->root->line_count + 1));
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bool is_gutter_click = (x < numlen);
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uint32_t render_width = editor->size.col - numlen;
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x = MAX(x, numlen) - numlen;
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uint32_t target_visual_row = y;
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uint32_t visual_row = 0;
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uint32_t line_index = editor->scroll.row;
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uint32_t last_line_index = editor->scroll.row;
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uint32_t last_col = editor->scroll.col;
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bool first_visual_line = true;
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std::shared_lock knot_lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, line_index);
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if (!it)
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return editor->scroll;
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while (visual_row <= target_visual_row) {
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const Fold *fold = fold_for_line(editor->folds, line_index);
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if (fold) {
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if (visual_row == target_visual_row) {
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free(it->buffer);
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free(it);
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if (is_gutter_click) {
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remove_fold(editor, fold->start);
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return {UINT32_MAX, UINT32_MAX};
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}
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return {fold->start > 0 ? fold->start - 1 : 0, 0};
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}
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visual_row++;
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while (line_index <= fold->end) {
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char *l = next_line(it, nullptr);
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if (!l)
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break;
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line_index++;
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}
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last_line_index = fold->end;
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last_col = 0;
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continue;
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}
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uint32_t line_len;
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char *line = next_line(it, &line_len);
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if (!line)
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break;
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if (line_len && line[line_len - 1] == '\n')
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line_len--;
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last_line_index = line_index;
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last_col = line_len;
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uint32_t offset = first_visual_line ? editor->scroll.col : 0;
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first_visual_line = false;
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while (offset < line_len || (line_len == 0 && offset == 0)) {
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uint32_t col = 0;
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uint32_t advance = 0;
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uint32_t left = line_len - offset;
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uint32_t last_good_offset = offset;
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while (left > 0 && col < render_width) {
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uint32_t g =
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grapheme_next_character_break_utf8(line + offset + advance, left);
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int w = display_width(line + offset + advance, g);
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if (col + w > render_width)
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break;
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if (visual_row == target_visual_row && x < col + w) {
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free(it->buffer);
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free(it);
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return {line_index, offset + advance};
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}
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advance += g;
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last_good_offset = offset + advance;
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left -= g;
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col += w;
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}
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last_col = last_good_offset;
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if (visual_row == target_visual_row) {
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free(it->buffer);
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free(it);
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return {line_index, last_good_offset};
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}
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visual_row++;
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if (visual_row > target_visual_row)
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break;
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if (advance == 0)
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break;
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offset += advance;
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if (line_len == 0)
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break;
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}
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line_index++;
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}
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free(it->buffer);
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free(it);
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return {last_line_index, last_col};
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}
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void move_line_up(Editor *editor) {
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if (!editor || !editor->root || editor->cursor.row == 0)
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return;
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if (mode == NORMAL || mode == INSERT) {
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uint32_t line_len, line_cluster_len;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
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char *line = next_line(it, &line_len);
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if (!line) {
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lock.unlock();
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return;
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}
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if (line_len > 0 && line[line_len - 1] == '\n')
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line_len--;
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line_cluster_len = count_clusters(line, line_len, 0, line_len);
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uint32_t target_row = prev_unfolded_row(editor, editor->cursor.row - 1);
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uint32_t up_by = editor->cursor.row - target_row;
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if (up_by > 1)
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up_by--;
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lock.unlock();
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Coord cursor = editor->cursor;
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edit_erase(editor, {cursor.row, 0}, line_cluster_len);
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edit_erase(editor, {cursor.row, 0}, -1);
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edit_insert(editor, {cursor.row - up_by, 0}, (char *)"\n", 1);
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edit_insert(editor, {cursor.row - up_by, 0}, line, line_len);
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free(it->buffer);
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free(it);
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editor->cursor = {cursor.row - up_by, cursor.col};
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} else if (mode == SELECT) {
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uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
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uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
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uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
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uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
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char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
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if (!selected_text)
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return;
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uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
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0, end_byte - start_byte);
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Coord cursor = editor->cursor;
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Coord selection = editor->selection;
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edit_erase(editor, {start_row, 0}, selected_len);
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edit_insert(editor, {start_row - 1, 0}, selected_text,
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end_byte - start_byte);
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free(selected_text);
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editor->cursor = {cursor.row - 1, cursor.col};
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editor->selection = {selection.row - 1, selection.col};
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}
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}
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void move_line_down(Editor *editor) {
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if (!editor || !editor->root)
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return;
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if (mode == NORMAL || mode == INSERT) {
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if (editor->cursor.row >= editor->root->line_count - 1)
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return;
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uint32_t line_len, line_cluster_len;
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std::shared_lock lock(editor->knot_mtx);
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LineIterator *it = begin_l_iter(editor->root, editor->cursor.row);
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char *line = next_line(it, &line_len);
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if (!line) {
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lock.unlock();
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return;
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}
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if (line_len && line[line_len - 1] == '\n')
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line_len--;
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line_cluster_len = count_clusters(line, line_len, 0, line_len);
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uint32_t target_row = next_unfolded_row(editor, editor->cursor.row + 1);
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if (target_row >= editor->root->line_count) {
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free(line);
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lock.unlock();
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return;
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}
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uint32_t down_by = target_row - editor->cursor.row;
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if (down_by > 1)
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down_by--;
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uint32_t ln;
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line_to_byte(editor->root, editor->cursor.row + down_by - 1, &ln);
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lock.unlock();
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Coord cursor = editor->cursor;
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edit_erase(editor, {cursor.row, 0}, line_cluster_len);
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edit_erase(editor, {cursor.row, 0}, -1);
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edit_insert(editor, {cursor.row + down_by, 0}, (char *)"\n", 1);
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edit_insert(editor, {cursor.row + down_by, 0}, line, line_len);
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free(it->buffer);
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free(it);
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editor->cursor = {cursor.row + down_by, cursor.col};
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} else if (mode == SELECT) {
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if (editor->cursor.row >= editor->root->line_count - 1 ||
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editor->selection.row >= editor->root->line_count - 1)
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return;
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std::shared_lock lock(editor->knot_mtx);
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uint32_t start_row = MIN(editor->cursor.row, editor->selection.row);
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uint32_t end_row = MAX(editor->cursor.row, editor->selection.row);
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uint32_t target_row = next_unfolded_row(editor, end_row + 1);
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if (target_row >= editor->root->line_count)
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return;
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uint32_t down_by = target_row - end_row;
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if (down_by > 1)
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down_by--;
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uint32_t start_byte = line_to_byte(editor->root, start_row, nullptr);
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uint32_t end_byte = line_to_byte(editor->root, end_row + 1, nullptr);
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char *selected_text = read(editor->root, start_byte, end_byte - start_byte);
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lock.unlock();
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if (!selected_text)
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return;
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uint32_t selected_len = count_clusters(selected_text, end_byte - start_byte,
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0, end_byte - start_byte);
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Coord cursor = editor->cursor;
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Coord selection = editor->selection;
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edit_erase(editor, {start_row, 0}, selected_len);
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edit_insert(editor, {start_row + down_by, 0}, selected_text,
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end_byte - start_byte);
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free(selected_text);
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editor->cursor = {cursor.row + down_by, cursor.col};
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editor->selection = {selection.row + down_by, selection.col};
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}
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}
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void edit_erase(Editor *editor, Coord pos, int64_t len) {
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if (len == 0)
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return;
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if (len < 0) {
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std::shared_lock lock_1(editor->knot_mtx);
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uint32_t cursor_original =
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line_to_byte(editor->root, editor->cursor.row, nullptr) +
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editor->cursor.col;
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TSPoint old_point = {pos.row, pos.col};
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uint32_t byte_pos = line_to_byte(editor->root, pos.row, nullptr) + pos.col;
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Coord point = move_left_pure(editor, pos, -len);
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json lsp_range;
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bool do_lsp = (editor->lsp != nullptr);
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if (do_lsp) {
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LineIterator *it = begin_l_iter(editor->root, point.row);
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char *line = next_line(it, nullptr);
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int utf16_start = 0;
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if (line)
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utf16_start = utf8_byte_offset_to_utf16(line, point.col);
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free(it->buffer);
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free(it);
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it = begin_l_iter(editor->root, pos.row);
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line = next_line(it, nullptr);
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int utf16_end = 0;
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if (line)
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utf16_end = utf8_byte_offset_to_utf16(line, pos.col);
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free(it->buffer);
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free(it);
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lsp_range = {{"start", {{"line", point.row}, {"character", utf16_start}}},
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{"end", {{"line", pos.row}, {"character", utf16_end}}}};
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}
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uint32_t start = line_to_byte(editor->root, point.row, nullptr) + point.col;
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if (cursor_original > start && cursor_original <= byte_pos) {
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editor->cursor = point;
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editor->cursor_preffered = UINT32_MAX;
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} else if (cursor_original > byte_pos) {
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uint32_t cursor_new = cursor_original - (byte_pos - start);
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uint32_t new_col;
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uint32_t new_row = byte_to_line(editor->root, cursor_new, &new_col);
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editor->cursor = {new_row, new_col};
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editor->cursor_preffered = UINT32_MAX;
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}
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lock_1.unlock();
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uint32_t start_row = point.row;
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uint32_t end_row = pos.row;
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apply_line_deletion(editor, start_row + 1, end_row);
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apply_hook_deletion(editor, start_row + 1, end_row);
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std::unique_lock lock_2(editor->knot_mtx);
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editor->root = erase(editor->root, start, byte_pos - start);
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lock_2.unlock();
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if (editor->ts.tree) {
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TSInputEdit edit = {
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.start_byte = start,
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.old_end_byte = byte_pos,
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.new_end_byte = start,
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.start_point = {point.row, point.col},
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.old_end_point = old_point,
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.new_end_point = {point.row, point.col},
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};
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editor->edit_queue.push(edit);
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}
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if (do_lsp) {
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json message = {
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{"jsonrpc", "2.0"},
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{"method", "textDocument/didChange"},
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{"params",
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{{"textDocument",
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{{"uri", editor->uri}, {"version", ++editor->lsp_version}}},
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{"contentChanges",
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json::array({{{"range", lsp_range}, {"text", ""}}})}}}};
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lsp_send(editor->lsp, message, nullptr);
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}
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std::unique_lock lock_3(editor->spans.mtx);
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apply_edit(editor->spans.spans, start, start - byte_pos);
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if (editor->spans.mid_parse)
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editor->spans.edits.push({start, start - byte_pos});
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std::unique_lock lock_4(editor->def_spans.mtx);
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apply_edit(editor->def_spans.spans, byte_pos, start - byte_pos);
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} else {
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std::shared_lock lock_1(editor->knot_mtx);
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uint32_t cursor_original =
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line_to_byte(editor->root, editor->cursor.row, nullptr) +
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editor->cursor.col;
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TSPoint old_point = {pos.row, pos.col};
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uint32_t byte_pos = line_to_byte(editor->root, pos.row, nullptr) + pos.col;
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Coord point = move_right_pure(editor, pos, len);
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json lsp_range;
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bool do_lsp = (editor->lsp != nullptr);
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if (do_lsp) {
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LineIterator *it = begin_l_iter(editor->root, pos.row);
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char *line = next_line(it, nullptr);
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int utf16_start = 0;
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if (line)
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utf16_start = utf8_byte_offset_to_utf16(line, pos.col);
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free(it->buffer);
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free(it);
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it = begin_l_iter(editor->root, point.row);
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line = next_line(it, nullptr);
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int utf16_end = 0;
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if (line)
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utf16_end = utf8_byte_offset_to_utf16(line, point.col);
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free(it->buffer);
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free(it);
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lsp_range = {{"start", {{"line", pos.row}, {"character", utf16_start}}},
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{"end", {{"line", point.row}, {"character", utf16_end}}}};
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}
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uint32_t end = line_to_byte(editor->root, point.row, nullptr) + point.col;
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if (cursor_original > byte_pos && cursor_original <= end) {
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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) {
|
|
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);
|
|
}
|
|
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) {
|
|
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);
|
|
}
|
|
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);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void apply_edit(std::vector<Span> &spans, uint32_t x, int64_t y) {
|
|
Span key{.start = x, .end = 0, .hl = nullptr};
|
|
auto it = std::lower_bound(
|
|
spans.begin(), spans.end(), key,
|
|
[](const Span &a, const Span &b) { return a.start < b.start; });
|
|
size_t idx = std::distance(spans.begin(), it);
|
|
while (idx > 0 && spans.at(idx - 1).end >= x)
|
|
--idx;
|
|
for (size_t i = idx; i < spans.size();) {
|
|
Span &s = spans.at(i);
|
|
if (s.start < x && s.end >= x) {
|
|
s.end += y;
|
|
} else if (s.start > x) {
|
|
s.start += y;
|
|
s.end += y;
|
|
}
|
|
if (s.end <= s.start)
|
|
spans.erase(spans.begin() + i);
|
|
else
|
|
++i;
|
|
}
|
|
}
|
|
|
|
std::vector<Fold>::iterator find_fold_iter(Editor *editor, uint32_t line) {
|
|
auto &folds = editor->folds;
|
|
auto it = std::lower_bound(
|
|
folds.begin(), folds.end(), line,
|
|
[](const Fold &fold, uint32_t value) { return fold.start < value; });
|
|
if (it != folds.end() && it->start == line)
|
|
return it;
|
|
if (it != folds.begin()) {
|
|
--it;
|
|
if (it->contains(line))
|
|
return it;
|
|
}
|
|
return folds.end();
|
|
}
|
|
|
|
bool add_fold(Editor *editor, uint32_t start, uint32_t end) {
|
|
if (!editor || !editor->root)
|
|
return false;
|
|
if (start > end)
|
|
std::swap(start, end);
|
|
if (start >= editor->root->line_count)
|
|
return false;
|
|
end = std::min(end, editor->root->line_count - 1);
|
|
if (start == end)
|
|
return false;
|
|
Fold new_fold{start, end};
|
|
auto &folds = editor->folds;
|
|
auto it = std::lower_bound(
|
|
folds.begin(), folds.end(), new_fold.start,
|
|
[](const Fold &fold, uint32_t value) { return fold.start < value; });
|
|
if (it != folds.begin()) {
|
|
auto prev = std::prev(it);
|
|
if (prev->end + 1 >= new_fold.start) {
|
|
new_fold.start = std::min(new_fold.start, prev->start);
|
|
new_fold.end = std::max(new_fold.end, prev->end);
|
|
it = folds.erase(prev);
|
|
}
|
|
}
|
|
while (it != folds.end() && it->start <= new_fold.end + 1) {
|
|
new_fold.end = std::max(new_fold.end, it->end);
|
|
it = folds.erase(it);
|
|
}
|
|
folds.insert(it, new_fold);
|
|
return true;
|
|
}
|
|
|
|
bool remove_fold(Editor *editor, uint32_t line) {
|
|
auto it = find_fold_iter(editor, line);
|
|
if (it == editor->folds.end())
|
|
return false;
|
|
editor->folds.erase(it);
|
|
return true;
|
|
}
|
|
|
|
void apply_line_insertion(Editor *editor, uint32_t line, uint32_t rows) {
|
|
for (auto it = editor->folds.begin(); it != editor->folds.end();) {
|
|
if (line <= it->start) {
|
|
it->start += rows;
|
|
it->end += rows;
|
|
++it;
|
|
} else if (line <= it->end) {
|
|
it = editor->folds.erase(it);
|
|
} else {
|
|
++it;
|
|
}
|
|
}
|
|
}
|
|
|
|
void apply_line_deletion(Editor *editor, uint32_t removal_start,
|
|
uint32_t removal_end) {
|
|
if (removal_start > removal_end)
|
|
return;
|
|
uint32_t rows_removed = removal_end - removal_start + 1;
|
|
std::vector<Fold> updated;
|
|
updated.reserve(editor->folds.size());
|
|
for (auto fold : editor->folds) {
|
|
if (removal_end < fold.start) {
|
|
fold.start -= rows_removed;
|
|
fold.end -= rows_removed;
|
|
updated.push_back(fold);
|
|
continue;
|
|
}
|
|
if (removal_start > fold.end) {
|
|
updated.push_back(fold);
|
|
continue;
|
|
}
|
|
}
|
|
editor->folds.swap(updated);
|
|
}
|
|
|
|
void apply_hook_insertion(Editor *editor, uint32_t line, uint32_t rows) {
|
|
for (auto &hook : editor->hooks)
|
|
if (hook > line)
|
|
hook += rows;
|
|
}
|
|
|
|
void apply_hook_deletion(Editor *editor, uint32_t removal_start,
|
|
uint32_t removal_end) {
|
|
for (auto &hook : editor->hooks)
|
|
if (hook > removal_start)
|
|
hook -= removal_end - removal_start + 1;
|
|
}
|