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feat: add basic support for responding to requests from a language server

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CJ van den Berg 2024-09-05 21:56:33 +02:00
parent 9cff9717c0
commit 79ba5d32cd
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
1 changed files with 39 additions and 2 deletions
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41
src/LSP.zig
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@ -29,14 +29,19 @@ pub fn term(self: *Self) void {
}
pub fn send_request(self: Self, allocator: std.mem.Allocator, method: []const u8, m: anytype) !tp.message {
// const frame = tracy.initZone(@src(), .{ .name = module_name ++ ".send_request" });
// defer frame.deinit();
var cb = std.ArrayList(u8).init(self.allocator);
defer cb.deinit();
try cbor.writeValue(cb.writer(), m);
return self.pid.call(allocator, lsp_request_timeout, .{ "REQ", method, cb.items });
}
pub fn send_response(self: Self, id: i32, m: anytype) !tp.message {
var cb = std.ArrayList(u8).init(self.allocator);
defer cb.deinit();
try cbor.writeValue(cb.writer(), m);
return self.pid.send(.{ "RSP", id, cb.items });
}
pub fn send_notification(self: Self, method: []const u8, m: anytype) !void {
var cb = std.ArrayList(u8).init(self.allocator);
defer cb.deinit();
@ -149,9 +154,12 @@ const Process = struct {
var bytes: []u8 = "";
var err: []u8 = "";
var code: u32 = 0;
var id: i32 = 0;
if (try m.match(.{ "REQ", tp.extract(&method), tp.extract(&bytes) })) {
try self.send_request(from, method, bytes);
} else if (try m.match(.{ "RSP", tp.extract(&id), tp.extract(&bytes) })) {
try self.send_response(id, bytes);
} else if (try m.match(.{ "NTFY", tp.extract(&method), tp.extract(&bytes) })) {
try self.send_notification(method, bytes);
} else if (try m.match(.{"close"})) {
@ -277,6 +285,35 @@ const Process = struct {
try self.requests.put(id, from.clone());
}
fn send_response(self: *Process, id: i32, result_cb: []const u8) !void {
const sp = if (self.sp) |*sp| sp else return error.Closed;
var msg = std.ArrayList(u8).init(self.allocator);
defer msg.deinit();
const msg_writer = msg.writer();
try cbor.writeMapHeader(msg_writer, 3);
try cbor.writeValue(msg_writer, "jsonrpc");
try cbor.writeValue(msg_writer, "2.0");
try cbor.writeValue(msg_writer, "id");
try cbor.writeValue(msg_writer, id);
try cbor.writeValue(msg_writer, "result");
_ = try msg_writer.write(result_cb);
const json = try cbor.toJsonAlloc(self.allocator, msg.items);
defer self.allocator.free(json);
var output = std.ArrayList(u8).init(self.allocator);
defer output.deinit();
const writer = output.writer();
const terminator = "\r\n";
const content_length = json.len + terminator.len;
try writer.print("Content-Length: {d}\r\nContent-Type: application/vscode-jsonrpc; charset=utf-8\r\n\r\n", .{content_length});
_ = try writer.write(json);
_ = try writer.write(terminator);
try sp.send(output.items);
self.write_log("### SEND response:\n{s}\n###\n", .{output.items});
}
fn send_notification(self: *Process, method: []const u8, params_cb: []const u8) !void {
const sp = if (self.sp) |*sp| sp else return error.Closed;