Migrate codegen to pure-rust generator

This commit replaces the build.rs dev dependency to generate protobuf
files using a pure-rust implementation, removing the requirement to have
`protoc` installed and making it easier to contribute.

This commit also bumps the lib protobuf lib to the latest version, and pin it
to a specific dependency, as required by the constant it generates. Due
to requiring a specific protobuf version, a new minor version has been
bumped.

Tentatively fix datrs#2

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "dat-network-protocol"
 description = "Dat Network Protocol protobuf definitions."
-version = "0.1.4"
+version = "0.2.0"
 authors = ["Yoshua Wuyts <[email protected]>"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
 
 [dependencies]
-protobuf = "2.0.4"
+protobuf = "=2.10.1"
 
 [build-dependencies]
-protoc-rust = "2.0.4"
+protobuf-codegen-pure = "=2.10.1"

build.rs

@@ -1,10 +1,6 @@
-// extern crate protoc_rust;
-
-// use protoc_rust::Customize;
-
 // Uncomment method below for like local builds.
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-  // protoc_rust::run(protoc_rust::Args {
+  // protobuf_codegen_pure::run(protobuf_codegen_pure::Args {
   //   out_dir: "src",
   //   input: &[
   //     "protos/cancel.proto",
@@ -19,7 +15,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
   //     "protos/unwant.proto",
   //     "protos/want.proto",
   //   ],
-  //   customize: Customize {
+  //   customize: protobuf_codegen_pure::Customize {
   //     ..Default::default()
   //   },
   //   includes: &["protos"],

src/cancel.rs

@@ -1,9 +1,9 @@
-// This file is generated by rust-protobuf 2.0.4. Do not edit
+// This file is generated by rust-protobuf 2.10.1. Do not edit
 // @generated
 
-// https://github.com/Manishearth/rust-clippy/issues/702
+// https://github.com/rust-lang/rust-clippy/issues/702
 #![allow(unknown_lints)]
-#![allow(clippy)]
+#![allow(clippy::all)]
 
 #![cfg_attr(rustfmt, rustfmt_skip)]
 
@@ -17,19 +17,30 @@
 #![allow(unsafe_code)]
 #![allow(unused_imports)]
 #![allow(unused_results)]
+//! Generated file from `cancel.proto`
 
 use protobuf::Message as Message_imported_for_functions;
 use protobuf::ProtobufEnum as ProtobufEnum_imported_for_functions;
 
+/// Generated files are compatible only with the same version
+/// of protobuf runtime.
+// const _PROTOBUF_VERSION_CHECK: () = ::protobuf::VERSION_2_10_1;
+
 #[derive(PartialEq,Clone,Default)]
 pub struct Cancel {
     // message fields
     index: ::std::option::Option<u64>,
     bytes: ::std::option::Option<u64>,
     hash: ::std::option::Option<bool>,
     // special fields
-    unknown_fields: ::protobuf::UnknownFields,
-    cached_size: ::protobuf::CachedSize,
+    pub unknown_fields: ::protobuf::UnknownFields,
+    pub cached_size: ::protobuf::CachedSize,
+}
+
+impl<'a> ::std::default::Default for &'a Cancel {
+    fn default() -> &'a Cancel {
+        <Cancel as ::protobuf::Message>::default_instance()
+    }
 }
 
 impl Cancel {
@@ -39,6 +50,10 @@ impl Cancel {
 
     // required uint64 index = 1;
 
+
+    pub fn get_index(&self) -> u64 {
+        self.index.unwrap_or(0)
+    }
     pub fn clear_index(&mut self) {
         self.index = ::std::option::Option::None;
     }
@@ -52,12 +67,12 @@ impl Cancel {
         self.index = ::std::option::Option::Some(v);
     }
 
-    pub fn get_index(&self) -> u64 {
-        self.index.unwrap_or(0)
-    }
-
     // optional uint64 bytes = 2;
 
+
+    pub fn get_bytes(&self) -> u64 {
+        self.bytes.unwrap_or(0)
+    }
     pub fn clear_bytes(&mut self) {
         self.bytes = ::std::option::Option::None;
     }
@@ -71,12 +86,12 @@ impl Cancel {
         self.bytes = ::std::option::Option::Some(v);
     }
 
-    pub fn get_bytes(&self) -> u64 {
-        self.bytes.unwrap_or(0)
-    }
-
     // optional bool hash = 3;
 
+
+    pub fn get_hash(&self) -> bool {
+        self.hash.unwrap_or(false)
+    }
     pub fn clear_hash(&mut self) {
         self.hash = ::std::option::Option::None;
     }
@@ -89,10 +104,6 @@ impl Cancel {
     pub fn set_hash(&mut self, v: bool) {
         self.hash = ::std::option::Option::Some(v);
     }
-
-    pub fn get_hash(&self) -> bool {
-        self.hash.unwrap_or(false)
-    }
 }
 
 impl ::protobuf::Message for Cancel {
@@ -103,7 +114,7 @@ impl ::protobuf::Message for Cancel {
         true
     }
 
-    fn merge_from(&mut self, is: &mut ::protobuf::CodedInputStream) -> ::protobuf::ProtobufResult<()> {
+    fn merge_from(&mut self, is: &mut ::protobuf::CodedInputStream<'_>) -> ::protobuf::ProtobufResult<()> {
         while !is.eof()? {
             let (field_number, wire_type) = is.read_tag_unpack()?;
             match field_number {
@@ -154,7 +165,7 @@ impl ::protobuf::Message for Cancel {
         my_size
     }
 
-    fn write_to_with_cached_sizes(&self, os: &mut ::protobuf::CodedOutputStream) -> ::protobuf::ProtobufResult<()> {
+    fn write_to_with_cached_sizes(&self, os: &mut ::protobuf::CodedOutputStream<'_>) -> ::protobuf::ProtobufResult<()> {
         if let Some(v) = self.index {
             os.write_uint64(1, v)?;
         }
@@ -180,13 +191,13 @@ impl ::protobuf::Message for Cancel {
         &mut self.unknown_fields
     }
 
-    fn as_any(&self) -> &::std::any::Any {
-        self as &::std::any::Any
+    fn as_any(&self) -> &dyn (::std::any::Any) {
+        self as &dyn (::std::any::Any)
     }
-    fn as_any_mut(&mut self) -> &mut ::std::any::Any {
-        self as &mut ::std::any::Any
+    fn as_any_mut(&mut self) -> &mut dyn (::std::any::Any) {
+        self as &mut dyn (::std::any::Any)
     }
-    fn into_any(self: Box<Self>) -> ::std::boxed::Box<::std::any::Any> {
+    fn into_any(self: Box<Self>) -> ::std::boxed::Box<dyn (::std::any::Any)> {
         self
     }
 
@@ -243,15 +254,15 @@ impl ::protobuf::Message for Cancel {
 
 impl ::protobuf::Clear for Cancel {
     fn clear(&mut self) {
-        self.clear_index();
-        self.clear_bytes();
-        self.clear_hash();
+        self.index = ::std::option::Option::None;
+        self.bytes = ::std::option::Option::None;
+        self.hash = ::std::option::Option::None;
         self.unknown_fields.clear();
     }
 }
 
 impl ::std::fmt::Debug for Cancel {
-    fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
+    fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
         ::protobuf::text_format::fmt(self, f)
     }
 }
@@ -263,9 +274,9 @@ impl ::protobuf::reflect::ProtobufValue for Cancel {
 }
 
 static file_descriptor_proto_data: &'static [u8] = b"\
-    \n\x0ccancel.proto\"H\n\x06Cancel\x12\x14\n\x05index\x18\x01\x20\x02(\
-    \x04R\x05index\x12\x14\n\x05bytes\x18\x02\x20\x01(\x04R\x05bytes\x12\x12\
-    \n\x04hash\x18\x03\x20\x01(\x08R\x04hash\
+    \n\x0ccancel.proto\x12\0\"<\n\x06Cancel\x12\x0f\n\x05index\x18\x01\x20\
+    \x02(\x04B\0\x12\x0f\n\x05bytes\x18\x02\x20\x01(\x04B\0\x12\x0e\n\x04has\
+    h\x18\x03\x20\x01(\x08B\0:\0B\0b\x06proto2\
 ";
 
 static mut file_descriptor_proto_lazy: ::protobuf::lazy::Lazy<::protobuf::descriptor::FileDescriptorProto> = ::protobuf::lazy::Lazy {