mirror of
https://github.com/golang/go
synced 2024-11-19 00:54:42 -07:00
7927dbab1b
This moves the fileset down to the base cache, the overlays down to the session and stores the environment on the view. packages.Config is no longer part of any public API, and the config is build on demand by combining all the layers of cache. Also added some documentation to the main source pacakge interfaces. Change-Id: I058092ad2275d433864d1f58576fc55e194607a6 Reviewed-on: https://go-review.googlesource.com/c/tools/+/178017 Run-TryBot: Ian Cottrell <iancottrell@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rebecca Stambler <rstambler@golang.org>
111 lines
3.5 KiB
Go
111 lines
3.5 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) didOpen(ctx context.Context, params *protocol.DidOpenTextDocumentParams) error {
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return s.cacheAndDiagnose(ctx, span.NewURI(params.TextDocument.URI), []byte(params.TextDocument.Text))
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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), []byte(text))
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}
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func (s *Server) cacheAndDiagnose(ctx context.Context, uri span.URI, content []byte) error {
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view := s.session.ViewOf(uri)
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if err := view.SetContent(ctx, uri, content); err != nil {
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return err
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}
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go func() {
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ctx := view.BackgroundContext()
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s.Diagnostics(ctx, view, uri)
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}()
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return nil
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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.session.ViewOf(uri)
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f, m, err := getSourceFile(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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fset := f.FileSet()
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filename, err := f.URI().Filename()
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if err != nil {
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return "", jsonrpc2.NewErrorf(jsonrpc2.CodeInternalError, "no filename for %s", uri)
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}
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content := f.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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// Update column mapper along with the content.
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m = protocol.NewColumnMapper(f.URI(), filename, fset, nil, content)
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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.session.ViewOf(uri)
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return view.SetContent(ctx, uri, nil)
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}
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