327 lines
11 KiB
C++
327 lines
11 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/main.h"
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#include "../include/ts.h"
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#include "../include/utils.h"
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#include <cmath>
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Editor *new_editor(const char *filename, Coord position, Coord size) {
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Editor *editor = new Editor();
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if (!editor)
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return nullptr;
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uint32_t len = 0;
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char *str = load_file(filename, &len);
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if (!str) {
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free_editor(editor);
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return nullptr;
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}
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editor->filename = filename;
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editor->position = position;
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editor->size = size;
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editor->cursor_preffered = UINT32_MAX;
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editor->root = load(str, len, optimal_chunk_size(len));
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free(str);
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if (len <= (1024 * 128)) {
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editor->parser = ts_parser_new();
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Language language = language_for_file(filename);
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editor->language = language.fn();
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ts_parser_set_language(editor->parser, editor->language);
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std::string query = get_exe_dir() + "/../grammar/" + language.name + ".scm";
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editor->query = load_query(query.c_str(), editor);
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}
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return editor;
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}
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void free_editor(Editor *editor) {
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ts_parser_delete(editor->parser);
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if (editor->tree)
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ts_tree_delete(editor->tree);
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if (editor->query)
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ts_query_delete(editor->query);
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free_rope(editor->root);
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delete editor;
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}
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void render_editor(Editor *editor) {
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uint32_t sel_start = 0, sel_end = 0;
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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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uint32_t render_width = editor->size.col - numlen;
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uint32_t render_x = editor->position.col + numlen;
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std::vector<std::pair<uint32_t, char>> v;
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for (size_t i = 0; i < 94; ++i)
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if (editor->hooks[i] != 0)
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v.push_back({editor->hooks[i], '!' + i});
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std::sort(v.begin(), v.end());
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auto hook_it = v.begin();
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std::shared_lock knot_lock(editor->knot_mtx);
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if (editor->selection_active) {
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Coord start, end;
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if (editor->cursor >= editor->selection) {
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uint32_t prev_col, next_col;
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switch (editor->selection_type) {
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case CHAR:
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start = editor->selection;
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end = move_right(editor, editor->cursor, 1);
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break;
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case WORD:
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word_boundaries(editor, editor->selection, &prev_col, &next_col,
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nullptr, nullptr);
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start = {editor->selection.row, prev_col};
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end = editor->cursor;
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break;
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case LINE:
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start = {editor->selection.row, 0};
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end = editor->cursor;
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break;
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}
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} else {
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start = editor->cursor;
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uint32_t prev_col, next_col, line_len;
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switch (editor->selection_type) {
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case CHAR:
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end = move_right(editor, editor->selection, 1);
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break;
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case WORD:
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word_boundaries(editor, editor->selection, &prev_col, &next_col,
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nullptr, nullptr);
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end = {editor->selection.row, next_col};
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break;
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case LINE:
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LineIterator *it = begin_l_iter(editor->root, editor->selection.row);
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char *line = next_line(it, &line_len);
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free(it);
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if (!line)
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return;
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if (line_len > 0 && line[line_len - 1] == '\n')
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line_len--;
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free(line);
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end = {editor->selection.row, line_len};
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break;
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}
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}
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sel_start = line_to_byte(editor->root, start.row, nullptr) + start.col;
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sel_end = line_to_byte(editor->root, end.row, nullptr) + end.col;
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}
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Coord cursor = {UINT32_MAX, UINT32_MAX};
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uint32_t line_index = editor->scroll.row;
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SpanCursor span_cursor(editor->spans);
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SpanCursor def_span_cursor(editor->def_spans);
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LineIterator *it = begin_l_iter(editor->root, line_index);
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if (!it)
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return;
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uint32_t rendered_rows = 0;
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uint32_t global_byte_offset = line_to_byte(editor->root, line_index, nullptr);
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span_cursor.sync(global_byte_offset);
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def_span_cursor.sync(global_byte_offset);
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while (rendered_rows < editor->size.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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update(editor->position.row + rendered_rows, editor->position.col, "",
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0xAAAAAA, 0, 0);
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char buf[16];
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int len = snprintf(buf, sizeof(buf), "%*u", numlen - 3, fold->start + 1);
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uint32_t num_color =
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editor->cursor.row == fold->start ? 0xFFFFFF : 0x555555;
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for (int i = 0; i < len; i++)
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update(editor->position.row + rendered_rows,
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editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color, 0,
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0);
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const char marker[15] = "... folded ...";
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uint32_t i = 0;
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for (; i < 14 && i < render_width; i++)
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update(rendered_rows, i + render_x, (char[2]){marker[i], 0}, 0xc6c6c6,
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0, 0);
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for (; i < render_width; i++)
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update(rendered_rows, i + render_x, " ", 0xc6c6c6, 0, 0);
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rendered_rows++;
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uint32_t skip_until = fold->end;
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while (line_index <= skip_until) {
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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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global_byte_offset += line_len;
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if (line_len > 0 && line[line_len - 1] == '\n')
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global_byte_offset--;
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global_byte_offset++;
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free(line);
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line_index++;
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}
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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 > 0 && line[line_len - 1] == '\n')
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line_len--;
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uint32_t current_byte_offset = 0;
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if (rendered_rows == 0)
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current_byte_offset += editor->scroll.col;
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while (current_byte_offset < line_len && rendered_rows < editor->size.row) {
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uint32_t color = editor->cursor.row == line_index ? 0x222222 : 0;
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if (current_byte_offset == 0 || rendered_rows == 0) {
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const char *hook = nullptr;
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char h[2] = {0, 0};
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auto it2 = hook_it;
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for (; it2 != v.end(); ++it2) {
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if (it2->first == line_index + 1) {
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h[0] = it2->second;
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hook = h;
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hook_it = it2;
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break;
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}
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}
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update(editor->position.row + rendered_rows, editor->position.col, hook,
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0xAAAAAA, 0, 0);
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char buf[16];
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int len = snprintf(buf, sizeof(buf), "%*u", numlen - 3, line_index + 1);
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uint32_t num_color =
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editor->cursor.row == line_index ? 0xFFFFFF : 0x555555;
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for (int i = 0; i < len; i++)
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update(editor->position.row + rendered_rows,
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editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color,
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0, 0);
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} else {
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for (uint32_t i = 0; i < numlen; i++)
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update(editor->position.row + rendered_rows, editor->position.col + i,
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" ", 0, 0, 0);
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}
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uint32_t col = 0;
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uint32_t local_render_offset = 0;
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uint32_t line_left = line_len - current_byte_offset;
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while (line_left > 0 && col < render_width) {
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if (line_index == editor->cursor.row &&
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editor->cursor.col == (current_byte_offset + local_render_offset)) {
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cursor.row = editor->position.row + rendered_rows;
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cursor.col = render_x + col;
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}
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uint32_t absolute_byte_pos =
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global_byte_offset + current_byte_offset + local_render_offset;
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Highlight *hl = span_cursor.get_highlight(absolute_byte_pos);
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Highlight *def_hl = def_span_cursor.get_highlight(absolute_byte_pos);
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uint32_t fg = hl ? hl->fg : 0xFFFFFF;
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uint32_t bg = hl ? hl->bg : 0;
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uint8_t fl = hl ? hl->flags : 0;
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if (def_hl) {
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if (def_hl->fg != 0)
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fg = def_hl->fg;
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if (def_hl->bg != 0)
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bg = def_hl->bg;
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fl |= def_hl->flags;
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}
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if (editor->selection_active && absolute_byte_pos >= sel_start &&
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absolute_byte_pos < sel_end)
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bg = 0x555555;
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uint32_t cluster_len = grapheme_next_character_break_utf8(
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line + current_byte_offset + local_render_offset, line_left);
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std::string cluster(line + current_byte_offset + local_render_offset,
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cluster_len);
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int width = display_width(cluster.c_str(), cluster_len);
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if (col + width > render_width)
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break;
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update(editor->position.row + rendered_rows, render_x + col,
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cluster.c_str(), fg, bg | color, fl);
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local_render_offset += cluster_len;
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line_left -= cluster_len;
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col += width;
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while (width-- > 1)
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update(editor->position.row + rendered_rows, render_x + col - width,
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"\x1b", fg, bg | color, fl);
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}
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if (line_index == editor->cursor.row &&
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editor->cursor.col == (current_byte_offset + local_render_offset)) {
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cursor.row = editor->position.row + rendered_rows;
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cursor.col = render_x + col;
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}
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if (editor->selection_active &&
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global_byte_offset + line_len + 1 > sel_start &&
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global_byte_offset + line_len + 1 <= sel_end && col < render_width) {
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update(editor->position.row + rendered_rows, render_x + col, " ", 0,
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0x555555 | color, 0);
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col++;
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}
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while (col < render_width) {
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update(editor->position.row + rendered_rows, render_x + col, " ", 0,
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0 | color, 0);
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col++;
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}
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rendered_rows++;
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current_byte_offset += local_render_offset;
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}
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if (line_len == 0 ||
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(current_byte_offset >= line_len && rendered_rows == 0)) {
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uint32_t color = editor->cursor.row == line_index ? 0x222222 : 0;
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const char *hook = nullptr;
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char h[2] = {0, 0};
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auto it2 = hook_it;
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for (; it2 != v.end(); ++it2) {
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if (it2->first == line_index + 1) {
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h[0] = it2->second;
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hook = h;
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hook_it = it2;
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break;
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}
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}
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update(editor->position.row + rendered_rows, editor->position.col, hook,
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0xAAAAAA, 0, 0);
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char buf[16];
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int len = snprintf(buf, sizeof(buf), "%*u", numlen - 3, line_index + 1);
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uint32_t num_color =
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editor->cursor.row == line_index ? 0xFFFFFF : 0x555555;
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for (int i = 0; i < len; i++)
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update(editor->position.row + rendered_rows,
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editor->position.col + i + 2, (char[2]){buf[i], 0}, num_color, 0,
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0);
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if (editor->cursor.row == line_index) {
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cursor.row = editor->position.row + rendered_rows;
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cursor.col = render_x;
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}
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uint32_t col = 0;
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if (editor->selection_active &&
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global_byte_offset + line_len + 1 > sel_start &&
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global_byte_offset + line_len + 1 <= sel_end) {
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update(editor->position.row + rendered_rows, render_x + col, " ", 0,
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0x555555 | color, 0);
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col++;
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}
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while (col < render_width) {
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update(editor->position.row + rendered_rows, render_x + col, " ", 0,
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0 | color, 0);
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col++;
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}
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rendered_rows++;
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}
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global_byte_offset += line_len + 1;
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line_index++;
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free(line);
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}
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if (cursor.row != UINT32_MAX && cursor.col != UINT32_MAX) {
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int type = 0;
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switch (mode) {
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case NORMAL:
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type = BLOCK;
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break;
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case INSERT:
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type = CURSOR;
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break;
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case JUMPER:
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case SELECT:
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type = UNDERLINE;
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break;
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}
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set_cursor(cursor.row, cursor.col, type, true);
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}
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while (rendered_rows < editor->size.row) {
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for (uint32_t col = 0; col < editor->size.col; col++)
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update(editor->position.row + rendered_rows, editor->position.col + col,
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" ", 0xFFFFFF, 0, 0);
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rendered_rows++;
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}
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free(it);
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}
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