feat

hello.proto

@@ -0,0 +1,65 @@
+syntax = "proto3";
+
+package demo;
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/timestamp.proto";
+
+// Service demo.
+//
+// All leading comments will be copied to markdown.
+service Demo {
+    // Rpc demo
+    //
+    // All leading comments will be copied to markdown.
+    rpc Echo1(Foo) returns (google.protobuf.Empty) {}
+    // Another rpc demo
+    rpc Echo2(google.protobuf.Empty) returns (Foo) {}
+}
+
+// Leading comments of message will be ignored.
+message Foo {
+    // boolean value demo
+    bool a = 1;
+    // 32 bit int value demo
+    int32 b = 2;
+    // 64 bit int value demo
+    int64 c = 3; // stored as string
+    // float value demo
+    double d = 4;
+    // string value demo
+    string e = 5;
+    // bytes value demo
+    bytes f = 6; // stored as base64 string
+    // message value demo
+    Bar g = 7;
+    // imported message value demo
+    google.protobuf.Timestamp h = 8;
+}
+
+message Bar {
+    // string list value demo
+    repeated string a = 1;
+    // map value demo
+    map<int32,string> b = 2;
+    // self reference value demo
+    Baz c = 3;
+    enum Sex {
+        Unknown = 0;
+        Male = 1;
+        Female = 2;
+    }
+    // enum value demo
+    Sex d = 4;
+    // message list value demo
+    repeated Person e = 5;
+}
+
+message Baz {
+    Bar a = 1; // self-referenced message will be displayed as {}
+}
+
+message Person {
+    string name = 1;
+    int32 age = 2;
+}