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feat: add support for LSP hover requests

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CJ van den Berg 2024-09-10 20:22:31 +02:00
parent 990c12797c
commit c894ae6dea
Signed by: neurocyte
GPG key ID: 8EB1E1BB660E3FB9
2 changed files with 103 additions and 0 deletions
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87
src/Project.zig
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@ -599,6 +599,93 @@ pub fn completion(self: *Self, _: tp.pid_ref, file_path: []const u8, row: usize,
defer self.allocator.free(response.buf);
}
pub fn hover(self: *Self, from: tp.pid_ref, file_path: []const u8, row: usize, col: usize) !void {
const lsp = try self.get_file_lsp(file_path);
const uri = try self.make_URI(file_path);
defer self.allocator.free(uri);
log.logger("lsp").print("fetching hover information...", .{});
const response = try lsp.send_request(self.allocator, "textDocument/hover", .{
.textDocument = .{ .uri = uri },
.position = .{ .line = row, .character = col },
});
defer self.allocator.free(response.buf);
var result: []const u8 = undefined;
if (try response.match(.{ "child", tp.string, "result", tp.null_ })) {
return;
} else if (try response.match(.{ "child", tp.string, "result", tp.extract_cbor(&result) })) {
try self.send_hover(from, file_path, row, col, result);
}
}
fn send_hover(self: *Self, to: tp.pid_ref, file_path: []const u8, row: usize, col: usize, result: []const u8) !void {
var iter = result;
var len = cbor.decodeMapHeader(&iter) catch return;
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "contents")) {
var value: []const u8 = "";
if (!(try cbor.matchValue(&iter, cbor.extract_cbor(&value)))) return error.InvalidMessageField;
return self.send_contents(to, "hover", file_path, row, col, value);
} else {
try cbor.skipValue(&iter);
}
}
}
fn send_contents(self: *Self, to: tp.pid_ref, tag: []const u8, file_path: []const u8, row: usize, col: usize, result: []const u8) !void {
var iter = result;
var kind: []const u8 = "plaintext";
var value: []const u8 = "";
if (try cbor.matchValue(&iter, cbor.extract(&value)))
return send_content_msg(to, tag, file_path, row, col, kind, value);
var is_list = true;
var len = cbor.decodeArrayHeader(&iter) catch blk: {
is_list = false;
iter = result;
break :blk cbor.decodeMapHeader(&iter) catch return;
};
if (is_list) {
var content = std.ArrayList(u8).init(self.allocator);
defer content.deinit();
while (len > 0) : (len -= 1) {
if (try cbor.matchValue(&iter, cbor.extract(&value))) {
try content.appendSlice(value);
if (len > 1) try content.appendSlice("\n");
}
}
return send_content_msg(to, tag, file_path, row, col, kind, content.items);
}
while (len > 0) : (len -= 1) {
var field_name: []const u8 = undefined;
if (!(try cbor.matchString(&iter, &field_name))) return error.InvalidMessage;
if (std.mem.eql(u8, field_name, "kind")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&kind)))) return error.InvalidMessageField;
} else if (std.mem.eql(u8, field_name, "value")) {
if (!(try cbor.matchValue(&iter, cbor.extract(&value)))) return error.InvalidMessageField;
} else {
try cbor.skipValue(&iter);
}
}
return send_content_msg(to, tag, file_path, row, col, kind, value);
}
fn send_content_msg(
to: tp.pid_ref,
tag: []const u8,
file_path: []const u8,
row: usize,
col: usize,
kind: []const u8,
content: []const u8,
) !void {
return try to.send(.{ tag, file_path, row, col, kind, content });
}
pub fn publish_diagnostics(self: *Self, to: tp.pid_ref, params_cb: []const u8) !void {
var uri: ?[]const u8 = null;
var diagnostics: []const u8 = &.{};