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// highlight uses of identifier (LSP request textDocument/highlight)
#include "ted.h"
void highlights_close(Ted *ted) {
Highlights *hls = &ted->highlights;
arr_clear(hls->highlights);
ted_cancel_lsp_request(ted, hls->last_request_lsp, hls->last_request_id);
hls->last_request_id = 0;
hls->requested_position = (LSPDocumentPosition){0};
}
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_lsp, hls->last_request_id);
hls->last_request_id = lsp_send_request(lsp, &request);
hls->last_request_lsp = lsp->id;
hls->requested_position = pos;
}
void highlights_process_lsp_response(Ted *ted, 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
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 f2_down = SDL_GetKeyboardState(NULL)[SDL_SCANCODE_F2];
if (!settings->highlight_enabled
|| (!settings->highlight_auto && !f2_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) {
buffer_highlight_lsp_range(buffer, hl->range);
}
gl_geometry_draw();
}
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