Add input file SHA256 hash consts to Go/Rust generated code

lib/xdrgen/generators/go.rb

@@ -817,7 +817,16 @@ def render_top_matter(out)
 
             "github.com/stellar/go-xdr/xdr3"
           )
-
+        EOS
+        out.break
+        out.puts <<-EOS.strip_heredoc
+        // XdrFilesSHA256 is the SHA256 hashes of source files.
+        var XdrFilesSHA256 = map[string]string{
+          #{@output.relative_source_path_sha256_hashes.map(){ |path, hash| %{"#{path}": "#{hash}"} }.join(",\n")}
+        }
+        EOS
+        out.break
+        out.puts <<-EOS.strip_heredoc
           type xdrType interface {
             xdrType()
           }

lib/xdrgen/generators/rust.rb

@@ -60,6 +60,16 @@ def render_top_matter(out)
           //  #{@output.relative_source_paths.join("\n//  ")}
         EOS
         out.break
+        out.puts "#![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]"
+        out.break
+        source_paths_sha256_hashes = @output.relative_source_path_sha256_hashes
+        out.puts <<-EOS.strip_heredoc
+          /// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+          pub const XDR_FILES_SHA256: [(&str, &str); #{source_paths_sha256_hashes.count}] = [
+            #{source_paths_sha256_hashes.map(){ |path, hash| %{("#{path}", "#{hash}")} }.join(",\n")}
+          ];
+        EOS
+        out.break
       end
 
       def render_lib(out)

lib/xdrgen/generators/rust/src/types.rs

@@ -1,5 +1,3 @@
-#![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
-
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

lib/xdrgen/output.rb

@@ -1,4 +1,5 @@
 require 'fileutils'
+require 'digest'
 
 module Xdrgen
   class Output
@@ -13,7 +14,11 @@ def initialize(source_paths, output_dir)
     end
 
     def relative_source_paths
-      @source_paths.map { |p| Pathname.new(p).expand_path.relative_path_from(Dir.pwd) }
+      @source_paths.map { |p| Pathname.new(p).expand_path.relative_path_from(Dir.pwd).to_s }.sort
+    end
+
+    def relative_source_path_sha256_hashes
+      relative_source_paths.map { |p| [p, Digest::SHA256.file(p).hexdigest] }.to_h
     end
 
     def open(child_path)

spec/output/generator_spec_go/block_comments.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/block_comments.x": "e13131bc4134f38da17b9d5e9f67d2695a69ef98e3ef272833f4c18d0cc88a30"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/const.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/const.x": "0bff3b37592fcc16cad2fe10b9a72f5d39d033a114917c24e86a9ebd9cda9c37"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/enum.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/enum.x": "35cf5e97e2057039640ed260e8b38bb2733a3c3ca8529c93877bdec02a999d7f"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/nesting.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/nesting.x": "5537949272c11f1bd09cf613a3751668b5018d686a1c2aaa3baa91183ca18f6a"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/optional.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/optional.x": "3241e832fcf00bca4315ecb6c259621dafb0e302a63a993f5504b0b5cebb6bd7"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/struct.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/struct.x": "c6911a83390e3b499c078fd0c579132eacce88a4a0538d3b8b5e57747a58db4a"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/test.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/test.x": "d29a98a6a3b9bf533a3e6712d928e0bed655e0f462ac4dae810c65d52ca9af41"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_go/union.x/MyXDR_generated.go

@@ -17,6 +17,11 @@ import (
   "github.com/stellar/go-xdr/xdr3"
 )
 
+// XdrFilesSHA256 is the SHA256 hashes of source files.
+var XdrFilesSHA256 = map[string]string{
+  "spec/fixtures/generator/union.x": "c251258d967223b341ebcf2d5bb0718e9a039b46232cb743865d9acd0c4bbe41"
+}
+
 type xdrType interface {
   xdrType()
 }

spec/output/generator_spec_rust/block_comments.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/block_comments.x", "e13131bc4134f38da17b9d5e9f67d2695a69ef98e3ef272833f4c18d0cc88a30")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/const.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/const.x", "0bff3b37592fcc16cad2fe10b9a72f5d39d033a114917c24e86a9ebd9cda9c37")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/enum.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/enum.x", "35cf5e97e2057039640ed260e8b38bb2733a3c3ca8529c93877bdec02a999d7f")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/nesting.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/nesting.x", "5537949272c11f1bd09cf613a3751668b5018d686a1c2aaa3baa91183ca18f6a")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/optional.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/optional.x", "3241e832fcf00bca4315ecb6c259621dafb0e302a63a993f5504b0b5cebb6bd7")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/struct.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/struct.x", "c6911a83390e3b499c078fd0c579132eacce88a4a0538d3b8b5e57747a58db4a")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/test.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/test.x", "d29a98a6a3b9bf533a3e6712d928e0bed655e0f462ac4dae810c65d52ca9af41")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.

spec/output/generator_spec_rust/union.x/MyXDR.rs

@@ -3,6 +3,11 @@
 
 #![allow(clippy::missing_errors_doc, clippy::unreadable_literal)]
 
+/// `XDR_FILES_SHA256` is a list of pairs of source files and their SHA256 hashes.
+pub const XDR_FILES_SHA256: [(&str, &str); 1] = [
+  ("spec/fixtures/generator/union.x", "c251258d967223b341ebcf2d5bb0718e9a039b46232cb743865d9acd0c4bbe41")
+];
+
 use core::{fmt, fmt::Debug, ops::Deref};
 
 // When feature alloc is turned off use static lifetime Box and Vec types.