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#include "help.h"
#include "dged/binding.h"
#include "dged/buffer.h"
#include "dged/buffer_view.h"
#include "dged/buffers.h"
#include "dged/minibuffer.h"
#include "dged/s8.h"
#include "dged/window.h"
#include "bindings.h"
#include "lsp.h"
static int32_t close_help(struct command_ctx ctx, int argc, const char **argv) {
(void)argc;
(void)argv;
if (window_has_prev_buffer_view(ctx.active_window)) {
window_set_buffer(ctx.active_window,
window_prev_buffer_view(ctx.active_window)->buffer);
} else {
minibuffer_echo_timeout(4, "no previous buffer to go to");
}
return 0;
}
static void handle_help_response(struct lsp_server *server,
struct lsp_response *response,
void *userdata) {
(void)server;
struct buffers *buffers = (struct buffers *)userdata;
if (response->value.result.type == Json_Null) {
minibuffer_echo_timeout(4, "help: no help found");
return;
}
struct hover help = hover_from_json(&response->value.result);
if (s8empty(help.contents)) {
minibuffer_echo_timeout(4, "help: no help found");
hover_free(&help);
return;
}
struct buffer *b = buffers_find(buffers, "*lsp-help*");
if (b == NULL) {
b = buffers_add(buffers, buffer_create("*lsp-help*"));
static struct command help_close = {
.name = "help_close",
.fn = close_help,
};
struct binding bindings[] = {
ANONYMOUS_BINDING(None, 'q', &help_close),
};
struct keymap km = keymap_create("help", 2);
keymap_bind_keys(&km, bindings, sizeof(bindings) / sizeof(bindings[0]));
buffer_add_keymap(b, km);
}
buffer_set_readonly(b, false);
buffer_clear(b);
buffer_add(b, buffer_end(b), help.contents.s, help.contents.l);
buffer_set_readonly(b, true);
if (window_find_by_buffer(b) == NULL) {
window_set_buffer(windows_get_active(), b);
}
hover_free(&help);
}
void lsp_help(struct lsp_server *server, struct buffer *buffer,
struct location at, struct buffers *buffers) {
uint64_t id = new_pending_request(server, handle_help_response, buffers);
struct versioned_text_document_identifier doc =
versioned_identifier_from_buffer(buffer);
struct text_document_position pos = {
.uri = doc.uri,
.position = at,
};
struct s8 json_payload = document_position_to_json(&pos);
lsp_send(lsp_backend(server),
lsp_create_request(id, s8("textDocument/hover"), json_payload));
versioned_text_document_identifier_free(&doc);
s8delete(json_payload);
}
int32_t lsp_help_cmd(struct command_ctx ctx, int argc, const char **argv) {
(void)argc;
(void)argv;
struct buffer_view *bv = window_buffer_view(ctx.active_window);
struct lsp_server *server = lsp_server_for_lang_id(bv->buffer->lang.id);
if (server == NULL) {
minibuffer_echo_timeout(4, "no lsp server associated with %s",
bv->buffer->name);
return 0;
}
lsp_help(server, bv->buffer, bv->dot, ctx.buffers);
return 0;
}
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