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// highlight uses of identifier (LSP request textDocument/highlight)
#include "ted-internal.h"
struct Highlights {
LSPServerRequestID last_request;
LSPDocumentPosition requested_position;
LSPHighlight *highlights;
};
void highlights_init(Ted *ted) {
ted->highlights = calloc(1, sizeof *ted->highlights);
}
static void highlights_close(Ted *ted) {
Highlights *hls = ted->highlights;
arr_clear(hls->highlights);
ted_cancel_lsp_request(ted, &hls->last_request);
hls->requested_position = (LSPDocumentPosition){0};
}
void highlights_quit(Ted *ted) {
highlights_close(ted);
free(ted->highlights);
ted->highlights = NULL;
}
static void highlights_send_request(Ted *ted) {
TextBuffer *buffer = ted->active_buffer;
Highlights *hls = ted->highlights;
if (!buffer) {
highlights_close(ted);
return;
}
LSP *lsp = buffer_lsp(buffer);
if (!lsp) {
highlights_close(ted);
return;
}
LSPDocumentPosition pos = buffer_cursor_pos_as_lsp_document_position(buffer);
LSPRequest request = {.type = LSP_REQUEST_HIGHLIGHT};
request.data.highlight.position = pos;
ted_cancel_lsp_request(ted, &hls->last_request);
hls->last_request = lsp_send_request(lsp, &request);
hls->requested_position = pos;
}
void highlights_process_lsp_response(Ted *ted, const LSPResponse *response) {
Highlights *hls = ted->highlights;
if (response->request.type != LSP_REQUEST_HIGHLIGHT)
return; // not a highlight request
if (response->request.id != hls->last_request.id)
return; // old request
hls->last_request.id = 0;
if (lsp_response_is_error(response)) {
highlights_close(ted);
return;
}
const LSPResponseHighlight *hl_response = &response->data.highlight;
arr_set_len(hls->highlights, arr_len(hl_response->highlights));
// type-safe memcpy
for (u32 i = 0; i < arr_len(hl_response->highlights); ++i)
hls->highlights[i] = hl_response->highlights[i];
}
void highlights_frame(Ted *ted) {
Highlights *hls = ted->highlights;
TextBuffer *buffer = ted->active_buffer;
if (!buffer) {
highlights_close(ted);
return;
}
const Settings *settings = buffer_settings(buffer);
bool key_down = ted_is_key_combo_down(ted, settings->highlight_key);
if (!settings->highlight_enabled
|| (!settings->highlight_auto && !key_down)) {
highlights_close(ted);
return;
}
LSPDocumentPosition pos = buffer_cursor_pos_as_lsp_document_position(buffer);
if (!lsp_document_position_eq(pos, hls->requested_position)) {
// cursor moved or something. let's resend the request.
highlights_send_request(ted);
}
arr_foreach_ptr(hls->highlights, LSPHighlight, hl) {
ColorSetting color = COLOR_HOVER_HL;
if (hl->kind == LSP_HIGHLIGHT_WRITE)
color = COLOR_HL_WRITE;
buffer_highlight_lsp_range(buffer, hl->range, color);
}
gl_geometry_draw();
}
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