forked from sqls-server/sqls
/
rename.go
110 lines (96 loc) · 2.45 KB
/
rename.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
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
package handler
import (
"context"
"encoding/json"
"fmt"
"github.com/hsanson/sqls/ast"
"github.com/hsanson/sqls/ast/astutil"
"github.com/hsanson/sqls/internal/lsp"
"github.com/hsanson/sqls/parser"
"github.com/hsanson/sqls/parser/parseutil"
"github.com/hsanson/sqls/token"
"github.com/sourcegraph/jsonrpc2"
)
func (s *Server) handleTextDocumentRename(ctx context.Context, conn *jsonrpc2.Conn, req *jsonrpc2.Request) (result interface{}, err error) {
if req.Params == nil {
return nil, &jsonrpc2.Error{Code: jsonrpc2.CodeInvalidParams}
}
var params lsp.RenameParams
if err := json.Unmarshal(*req.Params, ¶ms); err != nil {
return nil, err
}
f, ok := s.files[params.TextDocument.URI]
if !ok {
return nil, fmt.Errorf("document not found: %s", params.TextDocument.URI)
}
res, err := rename(f.Text, params)
if err != nil {
return nil, err
}
return res, nil
}
func rename(text string, params lsp.RenameParams) (*lsp.WorkspaceEdit, error) {
parsed, err := parser.Parse(text)
if err != nil {
return nil, err
}
pos := token.Pos{
Line: params.Position.Line,
Col: params.Position.Character,
}
// Get the identifer on focus
nodeWalker := parseutil.NewNodeWalker(parsed, pos)
m := astutil.NodeMatcher{
NodeTypes: []ast.NodeType{ast.TypeIdentifer},
}
currentVariable := nodeWalker.CurNodeButtomMatched(m)
if currentVariable == nil {
return nil, nil
}
// Get all identifiers in the statement
idents, err := parseutil.ExtractIdenfiers(parsed, pos)
if err != nil {
return nil, err
}
// Extract only those with matching names
renameTarget := []ast.Node{}
for _, ident := range idents {
if ident.String() == currentVariable.String() {
renameTarget = append(renameTarget, ident)
}
}
if len(renameTarget) == 0 {
return nil, nil
}
edits := make([]lsp.TextEdit, len(renameTarget))
for i, target := range renameTarget {
edit := lsp.TextEdit{
Range: lsp.Range{
Start: lsp.Position{
Line: target.Pos().Line,
Character: target.Pos().Col,
},
End: lsp.Position{
Line: target.End().Line,
Character: target.End().Col,
},
},
NewText: params.NewName,
}
edits[i] = edit
}
res := &lsp.WorkspaceEdit{
DocumentChanges: []lsp.TextDocumentEdit{
{
TextDocument: lsp.OptionalVersionedTextDocumentIdentifier{
Version: 0,
TextDocumentIdentifier: lsp.TextDocumentIdentifier{
URI: params.TextDocument.URI,
},
},
Edits: edits,
},
},
}
return res, nil
}