-
Notifications
You must be signed in to change notification settings - Fork 39
/
commandinterceptor.go
47 lines (40 loc) · 1.52 KB
/
commandinterceptor.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package lsprpc
import (
"context"
"encoding/json"
jsonrpc2_v2 "github.com/system-pclub/GCatch/GCatch/tools/internal/jsonrpc2_v2"
"github.com/system-pclub/GCatch/GCatch/tools/internal/lsp/protocol"
)
// HandlerMiddleware is a middleware that only modifies the jsonrpc2 handler.
type HandlerMiddleware func(jsonrpc2_v2.Handler) jsonrpc2_v2.Handler
// BindHandler transforms a HandlerMiddleware into a Middleware.
func BindHandler(hmw HandlerMiddleware) Middleware {
return Middleware(func(binder jsonrpc2_v2.Binder) jsonrpc2_v2.Binder {
return BinderFunc(func(ctx context.Context, conn *jsonrpc2_v2.Connection) (jsonrpc2_v2.ConnectionOptions, error) {
opts, err := binder.Bind(ctx, conn)
if err != nil {
return opts, err
}
opts.Handler = hmw(opts.Handler)
return opts, nil
})
})
}
func CommandInterceptor(command string, run func(*protocol.ExecuteCommandParams) (interface{}, error)) Middleware {
return BindHandler(func(delegate jsonrpc2_v2.Handler) jsonrpc2_v2.Handler {
return jsonrpc2_v2.HandlerFunc(func(ctx context.Context, req *jsonrpc2_v2.Request) (interface{}, error) {
if req.Method == "workspace/executeCommand" {
var params protocol.ExecuteCommandParams
if err := json.Unmarshal(req.Params, ¶ms); err == nil {
if params.Command == command {
return run(¶ms)
}
}
}
return delegate.Handle(ctx, req)
})
})
}