1 files changed, 231 insertions, 0 deletions
diff --git a/gopls/internal/lsp/protocol/enums.go b/gopls/internal/lsp/protocol/enums.go
new file mode 100644
index 000000000..82398e221
--- /dev/null
+++ b/gopls/internal/lsp/protocol/enums.go
@@ -0,0 +1,231 @@
+// Copyright 2018 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 protocol
+
+import (
+	"fmt"
+)
+
+var (
+	namesTextDocumentSyncKind   [int(Incremental) + 1]string
+	namesMessageType            [int(Log) + 1]string
+	namesFileChangeType         [int(Deleted) + 1]string
+	namesWatchKind              [int(WatchDelete) + 1]string
+	namesCompletionTriggerKind  [int(TriggerForIncompleteCompletions) + 1]string
+	namesDiagnosticSeverity     [int(SeverityHint) + 1]string
+	namesDiagnosticTag          [int(Unnecessary) + 1]string
+	namesCompletionItemKind     [int(TypeParameterCompletion) + 1]string
+	namesInsertTextFormat       [int(SnippetTextFormat) + 1]string
+	namesDocumentHighlightKind  [int(Write) + 1]string
+	namesSymbolKind             [int(TypeParameter) + 1]string
+	namesTextDocumentSaveReason [int(FocusOut) + 1]string
+)
+
+func init() {
+	namesTextDocumentSyncKind[int(None)] = "None"
+	namesTextDocumentSyncKind[int(Full)] = "Full"
+	namesTextDocumentSyncKind[int(Incremental)] = "Incremental"
+
+	namesMessageType[int(Error)] = "Error"
+	namesMessageType[int(Warning)] = "Warning"
+	namesMessageType[int(Info)] = "Info"
+	namesMessageType[int(Log)] = "Log"
+
+	namesFileChangeType[int(Created)] = "Created"
+	namesFileChangeType[int(Changed)] = "Changed"
+	namesFileChangeType[int(Deleted)] = "Deleted"
+
+	namesWatchKind[int(WatchCreate)] = "WatchCreate"
+	namesWatchKind[int(WatchChange)] = "WatchChange"
+	namesWatchKind[int(WatchDelete)] = "WatchDelete"
+
+	namesCompletionTriggerKind[int(Invoked)] = "Invoked"
+	namesCompletionTriggerKind[int(TriggerCharacter)] = "TriggerCharacter"
+	namesCompletionTriggerKind[int(TriggerForIncompleteCompletions)] = "TriggerForIncompleteCompletions"
+
+	namesDiagnosticSeverity[int(SeverityError)] = "Error"
+	namesDiagnosticSeverity[int(SeverityWarning)] = "Warning"
+	namesDiagnosticSeverity[int(SeverityInformation)] = "Information"
+	namesDiagnosticSeverity[int(SeverityHint)] = "Hint"
+
+	namesDiagnosticTag[int(Unnecessary)] = "Unnecessary"
+
+	namesCompletionItemKind[int(TextCompletion)] = "text"
+	namesCompletionItemKind[int(MethodCompletion)] = "method"
+	namesCompletionItemKind[int(FunctionCompletion)] = "func"
+	namesCompletionItemKind[int(ConstructorCompletion)] = "constructor"
+	namesCompletionItemKind[int(FieldCompletion)] = "field"
+	namesCompletionItemKind[int(VariableCompletion)] = "var"
+	namesCompletionItemKind[int(ClassCompletion)] = "type"
+	namesCompletionItemKind[int(InterfaceCompletion)] = "interface"
+	namesCompletionItemKind[int(ModuleCompletion)] = "package"
+	namesCompletionItemKind[int(PropertyCompletion)] = "property"
+	namesCompletionItemKind[int(UnitCompletion)] = "unit"
+	namesCompletionItemKind[int(ValueCompletion)] = "value"
+	namesCompletionItemKind[int(EnumCompletion)] = "enum"
+	namesCompletionItemKind[int(KeywordCompletion)] = "keyword"
+	namesCompletionItemKind[int(SnippetCompletion)] = "snippet"
+	namesCompletionItemKind[int(ColorCompletion)] = "color"
+	namesCompletionItemKind[int(FileCompletion)] = "file"
+	namesCompletionItemKind[int(ReferenceCompletion)] = "reference"
+	namesCompletionItemKind[int(FolderCompletion)] = "folder"
+	namesCompletionItemKind[int(EnumMemberCompletion)] = "enumMember"
+	namesCompletionItemKind[int(ConstantCompletion)] = "const"
+	namesCompletionItemKind[int(StructCompletion)] = "struct"
+	namesCompletionItemKind[int(EventCompletion)] = "event"
+	namesCompletionItemKind[int(OperatorCompletion)] = "operator"
+	namesCompletionItemKind[int(TypeParameterCompletion)] = "typeParam"
+
+	namesInsertTextFormat[int(PlainTextTextFormat)] = "PlainText"
+	namesInsertTextFormat[int(SnippetTextFormat)] = "Snippet"
+
+	namesDocumentHighlightKind[int(Text)] = "Text"
+	namesDocumentHighlightKind[int(Read)] = "Read"
+	namesDocumentHighlightKind[int(Write)] = "Write"
+
+	namesSymbolKind[int(File)] = "File"
+	namesSymbolKind[int(Module)] = "Module"
+	namesSymbolKind[int(Namespace)] = "Namespace"
+	namesSymbolKind[int(Package)] = "Package"
+	namesSymbolKind[int(Class)] = "Class"
+	namesSymbolKind[int(Method)] = "Method"
+	namesSymbolKind[int(Property)] = "Property"
+	namesSymbolKind[int(Field)] = "Field"
+	namesSymbolKind[int(Constructor)] = "Constructor"
+	namesSymbolKind[int(Enum)] = "Enum"
+	namesSymbolKind[int(Interface)] = "Interface"
+	namesSymbolKind[int(Function)] = "Function"
+	namesSymbolKind[int(Variable)] = "Variable"
+	namesSymbolKind[int(Constant)] = "Constant"
+	namesSymbolKind[int(String)] = "String"
+	namesSymbolKind[int(Number)] = "Number"
+	namesSymbolKind[int(Boolean)] = "Boolean"
+	namesSymbolKind[int(Array)] = "Array"
+	namesSymbolKind[int(Object)] = "Object"
+	namesSymbolKind[int(Key)] = "Key"
+	namesSymbolKind[int(Null)] = "Null"
+	namesSymbolKind[int(EnumMember)] = "EnumMember"
+	namesSymbolKind[int(Struct)] = "Struct"
+	namesSymbolKind[int(Event)] = "Event"
+	namesSymbolKind[int(Operator)] = "Operator"
+	namesSymbolKind[int(TypeParameter)] = "TypeParameter"
+
+	namesTextDocumentSaveReason[int(Manual)] = "Manual"
+	namesTextDocumentSaveReason[int(AfterDelay)] = "AfterDelay"
+	namesTextDocumentSaveReason[int(FocusOut)] = "FocusOut"
+}
+
+func formatEnum(f fmt.State, c rune, i int, names []string, unknown string) {
+	s := ""
+	if i >= 0 && i < len(names) {
+		s = names[i]
+	}
+	if s != "" {
+		fmt.Fprint(f, s)
+	} else {
+		fmt.Fprintf(f, "%s(%d)", unknown, i)
+	}
+}
+
+func parseEnum(s string, names []string) int {
+	for i, name := range names {
+		if s == name {
+			return i
+		}
+	}
+	return 0
+}
+
+func (e TextDocumentSyncKind) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesTextDocumentSyncKind[:], "TextDocumentSyncKind")
+}
+
+func ParseTextDocumentSyncKind(s string) TextDocumentSyncKind {
+	return TextDocumentSyncKind(parseEnum(s, namesTextDocumentSyncKind[:]))
+}
+
+func (e MessageType) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesMessageType[:], "MessageType")
+}
+
+func ParseMessageType(s string) MessageType {
+	return MessageType(parseEnum(s, namesMessageType[:]))
+}
+
+func (e FileChangeType) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesFileChangeType[:], "FileChangeType")
+}
+
+func ParseFileChangeType(s string) FileChangeType {
+	return FileChangeType(parseEnum(s, namesFileChangeType[:]))
+}
+
+func ParseWatchKind(s string) WatchKind {
+	return WatchKind(parseEnum(s, namesWatchKind[:]))
+}
+
+func (e CompletionTriggerKind) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesCompletionTriggerKind[:], "CompletionTriggerKind")
+}
+
+func ParseCompletionTriggerKind(s string) CompletionTriggerKind {
+	return CompletionTriggerKind(parseEnum(s, namesCompletionTriggerKind[:]))
+}
+
+func (e DiagnosticSeverity) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesDiagnosticSeverity[:], "DiagnosticSeverity")
+}
+
+func ParseDiagnosticSeverity(s string) DiagnosticSeverity {
+	return DiagnosticSeverity(parseEnum(s, namesDiagnosticSeverity[:]))
+}
+
+func (e DiagnosticTag) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesDiagnosticTag[:], "DiagnosticTag")
+}
+
+func ParseDiagnosticTag(s string) DiagnosticTag {
+	return DiagnosticTag(parseEnum(s, namesDiagnosticTag[:]))
+}
+
+func (e CompletionItemKind) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesCompletionItemKind[:], "CompletionItemKind")
+}
+
+func ParseCompletionItemKind(s string) CompletionItemKind {
+	return CompletionItemKind(parseEnum(s, namesCompletionItemKind[:]))
+}
+
+func (e InsertTextFormat) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesInsertTextFormat[:], "InsertTextFormat")
+}
+
+func ParseInsertTextFormat(s string) InsertTextFormat {
+	return InsertTextFormat(parseEnum(s, namesInsertTextFormat[:]))
+}
+
+func (e DocumentHighlightKind) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesDocumentHighlightKind[:], "DocumentHighlightKind")
+}
+
+func ParseDocumentHighlightKind(s string) DocumentHighlightKind {
+	return DocumentHighlightKind(parseEnum(s, namesDocumentHighlightKind[:]))
+}
+
+func (e SymbolKind) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesSymbolKind[:], "SymbolKind")
+}
+
+func ParseSymbolKind(s string) SymbolKind {
+	return SymbolKind(parseEnum(s, namesSymbolKind[:]))
+}
+
+func (e TextDocumentSaveReason) Format(f fmt.State, c rune) {
+	formatEnum(f, c, int(e), namesTextDocumentSaveReason[:], "TextDocumentSaveReason")
+}
+
+func ParseTextDocumentSaveReason(s string) TextDocumentSaveReason {
+	return TextDocumentSaveReason(parseEnum(s, namesTextDocumentSaveReason[:]))
+}