github.com/jhump/golang-x-tools@v0.0.0-20220218190644-4958d6d39439/internal/lsp/hover.go (about)

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package lsp
     6  
     7  import (
     8  	"context"
     9  
    10  	"github.com/jhump/golang-x-tools/internal/lsp/mod"
    11  	"github.com/jhump/golang-x-tools/internal/lsp/protocol"
    12  	"github.com/jhump/golang-x-tools/internal/lsp/source"
    13  	"github.com/jhump/golang-x-tools/internal/lsp/template"
    14  )
    15  
    16  func (s *Server) hover(ctx context.Context, params *protocol.HoverParams) (*protocol.Hover, error) {
    17  	snapshot, fh, ok, release, err := s.beginFileRequest(ctx, params.TextDocument.URI, source.UnknownKind)
    18  	defer release()
    19  	if !ok {
    20  		return nil, err
    21  	}
    22  	switch snapshot.View().FileKind(fh) {
    23  	case source.Mod:
    24  		return mod.Hover(ctx, snapshot, fh, params.Position)
    25  	case source.Go:
    26  		return source.Hover(ctx, snapshot, fh, params.Position)
    27  	case source.Tmpl:
    28  		return template.Hover(ctx, snapshot, fh, params.Position)
    29  	}
    30  	return nil, nil
    31  }