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// Copyright 2020 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 fake
import (
"context"
"fmt"
"golang.org/x/tools/internal/lsp/protocol"
)
// ClientHooks are called to handle the corresponding client LSP method.
type ClientHooks struct {
OnLogMessage func(context.Context, *protocol.LogMessageParams) error
OnDiagnostics func(context.Context, *protocol.PublishDiagnosticsParams) error
OnWorkDoneProgressCreate func(context.Context, *protocol.WorkDoneProgressCreateParams) error
OnProgress func(context.Context, *protocol.ProgressParams) error
OnShowMessage func(context.Context, *protocol.ShowMessageParams) error
OnShowMessageRequest func(context.Context, *protocol.ShowMessageRequestParams) error
OnRegistration func(context.Context, *protocol.RegistrationParams) error
OnUnregistration func(context.Context, *protocol.UnregistrationParams) error
}
// Client is an adapter that converts an *Editor into an LSP Client. It mosly
// delegates functionality to hooks that can be configured by tests.
type Client struct {
editor *Editor
hooks ClientHooks
}
func (c *Client) ShowMessage(ctx context.Context, params *protocol.ShowMessageParams) error {
if c.hooks.OnShowMessage != nil {
return c.hooks.OnShowMessage(ctx, params)
}
return nil
}
func (c *Client) ShowMessageRequest(ctx context.Context, params *protocol.ShowMessageRequestParams) (*protocol.MessageActionItem, error) {
if c.hooks.OnShowMessageRequest != nil {
if err := c.hooks.OnShowMessageRequest(ctx, params); err != nil {
return nil, err
}
}
if len(params.Actions) == 0 || len(params.Actions) > 1 {
return nil, fmt.Errorf("fake editor cannot handle multiple action items")
}
return ¶ms.Actions[0], nil
}
func (c *Client) LogMessage(ctx context.Context, params *protocol.LogMessageParams) error {
if c.hooks.OnLogMessage != nil {
return c.hooks.OnLogMessage(ctx, params)
}
return nil
}
func (c *Client) Event(ctx context.Context, event *interface{}) error {
return nil
}
func (c *Client) PublishDiagnostics(ctx context.Context, params *protocol.PublishDiagnosticsParams) error {
if c.hooks.OnDiagnostics != nil {
return c.hooks.OnDiagnostics(ctx, params)
}
return nil
}
func (c *Client) WorkspaceFolders(context.Context) ([]protocol.WorkspaceFolder, error) {
return []protocol.WorkspaceFolder{}, nil
}
func (c *Client) Configuration(_ context.Context, p *protocol.ParamConfiguration) ([]interface{}, error) {
results := make([]interface{}, len(p.Items))
for i, item := range p.Items {
if item.Section != "gopls" {
continue
}
results[i] = c.editor.configuration()
}
return results, nil
}
func (c *Client) RegisterCapability(ctx context.Context, params *protocol.RegistrationParams) error {
if c.hooks.OnRegistration != nil {
return c.hooks.OnRegistration(ctx, params)
}
return nil
}
func (c *Client) UnregisterCapability(ctx context.Context, params *protocol.UnregistrationParams) error {
if c.hooks.OnUnregistration != nil {
return c.hooks.OnUnregistration(ctx, params)
}
return nil
}
func (c *Client) Progress(ctx context.Context, params *protocol.ProgressParams) error {
if c.hooks.OnProgress != nil {
return c.hooks.OnProgress(ctx, params)
}
return nil
}
func (c *Client) WorkDoneProgressCreate(ctx context.Context, params *protocol.WorkDoneProgressCreateParams) error {
if c.hooks.OnWorkDoneProgressCreate != nil {
return c.hooks.OnWorkDoneProgressCreate(ctx, params)
}
return nil
}
// ApplyEdit applies edits sent from the server. Note that as of writing gopls
// doesn't use this feature, so it is untested.
func (c *Client) ApplyEdit(ctx context.Context, params *protocol.ApplyWorkspaceEditParams) (*protocol.ApplyWorkspaceEditResponse, error) {
if len(params.Edit.Changes) != 0 {
return &protocol.ApplyWorkspaceEditResponse{FailureReason: "Edit.Changes is unsupported"}, nil
}
for _, change := range params.Edit.DocumentChanges {
path := c.editor.sandbox.Workdir.URIToPath(change.TextDocument.URI)
edits := convertEdits(change.Edits)
if err := c.editor.EditBuffer(ctx, path, edits); err != nil {
return nil, err
}
}
return &protocol.ApplyWorkspaceEditResponse{Applied: true}, nil
}
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