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https://github.com/golang/go
synced 2024-10-01 07:28:35 -06:00
34437f544f
This change separates the different behaviors of server.go by the categories defined in the spec. This allows us to differentiate more easily between the language features and the text synchronization code. I also renamed the "Symbols" function to "Symbol", which fits with the specification (https://microsoft.github.io/language-server-protocol/specification#workspace_symbol), and makes clearer the distinction between DocumentSymbols and Symbol. Change-Id: I926b8a772c478f6ae426352fb12dc4403f0e736a Reviewed-on: https://go-review.googlesource.com/c/tools/+/172637 Run-TryBot: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Cottrell <iancottrell@google.com>
87 lines
2.7 KiB
Go
87 lines
2.7 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package lsp
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import (
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"bytes"
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"context"
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"golang.org/x/tools/internal/jsonrpc2"
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"golang.org/x/tools/internal/lsp/protocol"
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"golang.org/x/tools/internal/span"
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)
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func (s *Server) didChange(ctx context.Context, params *protocol.DidChangeTextDocumentParams) error {
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if len(params.ContentChanges) < 1 {
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return jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "no content changes provided")
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}
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var text string
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switch s.textDocumentSyncKind {
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case protocol.Incremental:
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var err error
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text, err = s.applyChanges(ctx, params)
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if err != nil {
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return err
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}
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case protocol.Full:
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// We expect the full content of file, i.e. a single change with no range.
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change := params.ContentChanges[0]
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if change.RangeLength != 0 {
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return jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "unexpected change range provided")
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}
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text = change.Text
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}
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return s.cacheAndDiagnose(ctx, span.NewURI(params.TextDocument.URI), text)
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}
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func (s *Server) applyChanges(ctx context.Context, params *protocol.DidChangeTextDocumentParams) (string, error) {
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if len(params.ContentChanges) == 1 && params.ContentChanges[0].Range == nil {
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// If range is empty, we expect the full content of file, i.e. a single change with no range.
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change := params.ContentChanges[0]
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if change.RangeLength != 0 {
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return "", jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "unexpected change range provided")
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}
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return change.Text, nil
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}
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uri := span.NewURI(params.TextDocument.URI)
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view := s.findView(ctx, uri)
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file, m, err := newColumnMap(ctx, view, uri)
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if err != nil {
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return "", jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "file not found")
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}
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content := file.GetContent(ctx)
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for _, change := range params.ContentChanges {
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spn, err := m.RangeSpan(*change.Range)
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if err != nil {
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return "", err
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}
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if !spn.HasOffset() {
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return "", jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "invalid range for content change")
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}
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start, end := spn.Start().Offset(), spn.End().Offset()
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if end <= start {
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return "", jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "invalid range for content change")
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}
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var buf bytes.Buffer
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buf.Write(content[:start])
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buf.WriteString(change.Text)
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buf.Write(content[end:])
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content = buf.Bytes()
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}
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return string(content), nil
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}
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func (s *Server) didSave(ctx context.Context, params *protocol.DidSaveTextDocumentParams) error {
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return nil // ignore
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}
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func (s *Server) didClose(ctx context.Context, params *protocol.DidCloseTextDocumentParams) error {
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uri := span.NewURI(params.TextDocument.URI)
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view := s.findView(ctx, uri)
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return view.SetContent(ctx, uri, nil)
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}
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