[analysis_server] Update LSP generated classes to latest published version of the spec

No functional changes here but there have been some refactors inside the meta model that required some minor tweaks (URI moved from a type alias to string to a spec-defined base type).

I also improved the handling of some type references in the comments we bring in so they're clickable in more places.

Change-Id: I7c725d01b6d7bc0925979b8118dbfd8952f78724
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/297482
Commit-Queue: Brian Wilkerson <[email protected]>
Reviewed-by: Brian Wilkerson <[email protected]>

Author: DanTup

pkg/analysis_server/lib/lsp_protocol/protocol_generated.dart

@@ -452,7 +452,7 @@ void main() {
           InitializeParamsClientInfo(name: 'server name', version: '1.2.3'),
       rootPath: '!root',
       capabilities: ClientCapabilities(),
-      trace: 'off',
+      trace: TraceValues.Off,
       workspaceFolders: workspaceFolders,
     );
     final json = jsonEncode(obj);

pkg/analysis_server/test/tool/lsp_spec/json_test.dart

@@ -37,7 +37,8 @@ bool enumClassAllowsAnyValue(String name) {
       name != 'FailureHandlingKind' &&
       name != 'InsertTextFormat' &&
       name != 'MarkupKind' &&
-      name != 'ResourceOperationKind';
+      name != 'ResourceOperationKind' &&
+      name != 'TraceValues';
 }
 
 String generateDartForTypes(List<LspEntity> types) {

pkg/analysis_server/tool/lsp_spec/codegen_dart.dart

@@ -245,6 +245,14 @@ List<LspEntity> getCustomClasses() {
       baseType: TypeReference('Uri'),
       isRename: false,
     ),
+    // The LSP Spec uses "URI" but since that's fairly generic and will show up
+    // everywhere in code completion, we rename it to "LspUri" before using
+    // a typedef onto the Dart URI class.
+    TypeAlias(
+      name: 'URI',
+      baseType: TypeReference('LSPUri'),
+      isRename: true,
+    ),
     TypeAlias(
       name: 'LSPUri',
       baseType: TypeReference('Uri'),