internal/lsp: latest version of LSP stubs

This CL updates the LSP to 3.17.0. It is a DANGEROUS CL as the stubs
are being generated by Go code reading vscode's language independent
description of the protocol (in metaMode.json in the vscode-languageserver-node
repository.)

Some of the union types in the protocol have Go types with names containing  'Or'.
These types have custom marshaling and unmarshaling code.

Embedded structures in the protocol are broken out as their own
types, with names constructed from the context in which they occur.

The natural output has been modified to minimize the number of changes
needed for gopls. (e.g., Workspace6Gn is preserved for compatibility.0
Thus, many types that are union types in the LSP description have been replaced by the
types gopls already uses.

Updates golang/go#52969

Change-Id: I16f6d877215155ac9e782b0f5bcbdab3f1aa2593
Reviewed-on: https://go-review.googlesource.com/c/tools/+/424214
TryBot-Result: Gopher Robot <gobot@golang.org>
gopls-CI: kokoro <noreply+kokoro@google.com>
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>

gopls/internal/lsp/cmd/cmd.go

@@ -22,13 +22,13 @@ import (
 	"text/tabwriter"
 	"time"
 
-	"golang.org/x/tools/internal/jsonrpc2"
 	"golang.org/x/tools/gopls/internal/lsp"
 	"golang.org/x/tools/gopls/internal/lsp/cache"
 	"golang.org/x/tools/gopls/internal/lsp/debug"
 	"golang.org/x/tools/gopls/internal/lsp/lsprpc"
 	"golang.org/x/tools/gopls/internal/lsp/protocol"
 	"golang.org/x/tools/gopls/internal/lsp/source"
+	"golang.org/x/tools/internal/jsonrpc2"
 	"golang.org/x/tools/internal/span"
 	"golang.org/x/tools/internal/tool"
 	"golang.org/x/tools/internal/xcontext"
@@ -422,6 +422,10 @@ func fileURI(uri protocol.DocumentURI) span.URI {
 	return sURI
 }
 
+func (c *cmdClient) CodeLensRefresh(context.Context) error { return nil }
+
+func (c *cmdClient) LogTrace(context.Context, *protocol.LogTraceParams) error { return nil }
+
 func (c *cmdClient) ShowMessage(ctx context.Context, p *protocol.ShowMessageParams) error { return nil }
 
 func (c *cmdClient) ShowMessageRequest(ctx context.Context, p *protocol.ShowMessageRequestParams) (*protocol.MessageActionItem, error) {

gopls/internal/lsp/fake/client.go

@@ -30,6 +30,10 @@ type Client struct {
 	hooks  ClientHooks
 }
 
+func (c *Client) CodeLensRefresh(context.Context) error { return nil }
+
+func (c *Client) LogTrace(context.Context, *protocol.LogTraceParams) error { return nil }
+
 func (c *Client) ShowMessage(ctx context.Context, params *protocol.ShowMessageParams) error {
 	if c.hooks.OnShowMessage != nil {
 		return c.hooks.OnShowMessage(ctx, params)

gopls/internal/lsp/general.go

@@ -15,12 +15,12 @@ import (
 	"path/filepath"
 	"sync"
 
-	"golang.org/x/tools/internal/event"
-	"golang.org/x/tools/internal/jsonrpc2"
-	"golang.org/x/tools/internal/bug"
 	"golang.org/x/tools/gopls/internal/lsp/debug"
 	"golang.org/x/tools/gopls/internal/lsp/protocol"
 	"golang.org/x/tools/gopls/internal/lsp/source"
+	"golang.org/x/tools/internal/bug"
+	"golang.org/x/tools/internal/event"
+	"golang.org/x/tools/internal/jsonrpc2"
 	"golang.org/x/tools/internal/span"
 )
 
@@ -173,10 +173,7 @@ See https://github.com/golang/go/issues/45732 for more information.`,
 				},
 			},
 		},
-		ServerInfo: struct {
-			Name    string `json:"name"`
-			Version string `json:"version,omitempty"`
-		}{
+		ServerInfo: protocol.PServerInfoMsg_initialize{
 			Name:    "gopls",
 			Version: string(goplsVersion),
 		},
@@ -404,13 +401,12 @@ func (s *Server) fetchConfig(ctx context.Context, name string, folder span.URI,
 		return nil
 	}
 	configs, err := s.client.Configuration(ctx, &protocol.ParamConfiguration{
-		ConfigurationParams: protocol.ConfigurationParams{
-			Items: []protocol.ConfigurationItem{{
-				ScopeURI: string(folder),
-				Section:  "gopls",
-			}},
-		},
-	})
+		Items: []protocol.ConfigurationItem{{
+			ScopeURI: string(folder),
+			Section:  "gopls",
+		}},
+	},
+	)
 	if err != nil {
 		return fmt.Errorf("failed to get workspace configuration from client (%s): %v", folder, err)
 	}

gopls/internal/lsp/protocol/enums.go

@@ -10,7 +10,6 @@ import (
 
 var (
 	namesTextDocumentSyncKind   [int(Incremental) + 1]string
-	namesInitializeError        [int(UnknownProtocolVersion) + 1]string
 	namesMessageType            [int(Log) + 1]string
 	namesFileChangeType         [int(Deleted) + 1]string
 	namesWatchKind              [int(WatchDelete) + 1]string
@@ -29,8 +28,6 @@ func init() {
 	namesTextDocumentSyncKind[int(Full)] = "Full"
 	namesTextDocumentSyncKind[int(Incremental)] = "Incremental"
 
-	namesInitializeError[int(UnknownProtocolVersion)] = "UnknownProtocolVersion"
-
 	namesMessageType[int(Error)] = "Error"
 	namesMessageType[int(Warning)] = "Warning"
 	namesMessageType[int(Info)] = "Info"
@@ -149,14 +146,6 @@ func ParseTextDocumentSyncKind(s string) TextDocumentSyncKind {
 	return TextDocumentSyncKind(parseEnum(s, namesTextDocumentSyncKind[:]))
 }
 
-func (e InitializeError) Format(f fmt.State, c rune) {
-	formatEnum(f, c, int(e), namesInitializeError[:], "InitializeError")
-}
-
-func ParseInitializeError(s string) InitializeError {
-	return InitializeError(parseEnum(s, namesInitializeError[:]))
-}
-
 func (e MessageType) Format(f fmt.State, c rune) {
 	formatEnum(f, c, int(e), namesMessageType[:], "MessageType")
 }
@@ -173,10 +162,6 @@ func ParseFileChangeType(s string) FileChangeType {
 	return FileChangeType(parseEnum(s, namesFileChangeType[:]))
 }
 
-func (e WatchKind) Format(f fmt.State, c rune) {
-	formatEnum(f, c, int(e), namesWatchKind[:], "WatchKind")
-}
-
 func ParseWatchKind(s string) WatchKind {
 	return WatchKind(parseEnum(s, namesWatchKind[:]))
 }