Handle singleton structs in Rust

4 files changed, 37 insertions, 1 deletions

diff --git a/examples/12-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java b/examples/12-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
index a924d1e..d8d4f3f 100644
--- a/examples/12-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
+++ b/examples/12-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
@@ -15,6 +15,7 @@ import java.util.Optional;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 import org.zwobble.example.types.data.EnumWithVariants;
+import org.zwobble.example.types.data.StructSingleton;
 import org.zwobble.example.types.data.StructWithBool;
 import org.zwobble.example.types.data.StructWithDifferentSharedTypes;
 import org.zwobble.example.types.data.StructWithEnum;
@@ -34,6 +35,18 @@ import org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue
 
 public class Transient0Tests {
     @Test
+    public void structSingleton() throws IOException {
+        var value = StructSingleton.INSTANCE;
+
+        assertRoundTripEncoding(
+            "StructSingleton",
+            value,
+            HobgoblinTransient0Data::encodeStructSingleton,
+            HobgoblinTransient0Data::decodeStructSingleton
+        );
+    }
+
+    @Test
     public void structWithBool() throws IOException {
         var value = new StructWithBool(true, false);
 
diff --git a/examples/12-transient-0/output/rust/src/gen/data.rs b/examples/12-transient-0/output/rust/src/gen/data.rs
index 4ec0524..aef9f69 100644
--- a/examples/12-transient-0/output/rust/src/gen/data.rs
+++ b/examples/12-transient-0/output/rust/src/gen/data.rs
@@ -1,6 +1,9 @@
 // Generated by hobgoblin.
 
 #[derive(Debug, Hash, PartialEq)]
+pub struct StructSingleton;
+
+#[derive(Debug, Hash, PartialEq)]
 pub struct StructWithBool {
     pub a: ::core::primitive::bool,
     pub b: ::core::primitive::bool,
diff --git a/examples/12-transient-0/output/rust/src/gen/data/transient_0.rs b/examples/12-transient-0/output/rust/src/gen/data/transient_0.rs
index ea4a459..ca9beaf 100644
--- a/examples/12-transient-0/output/rust/src/gen/data/transient_0.rs
+++ b/examples/12-transient-0/output/rust/src/gen/data/transient_0.rs
@@ -1,5 +1,13 @@
 // Generated by hobgoblin.
 
+pub fn encode_struct_singleton(value: &crate::data::StructSingleton, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_singleton(reader: &mut impl std::io::Read, shared_values: &mut ::std::vec::Vec::<::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>>) -> ::std::io::Result::<crate::data::StructSingleton> {
+    ::std::io::Result::Ok(crate::data::StructSingleton)
+}
+
 pub fn encode_struct_with_bool(value: &crate::data::StructWithBool, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
     crate::transient_0::encode_bool(&value.a, writer, shared_values)?;
     crate::transient_0::encode_bool(&value.b, writer, shared_values)?;
diff --git a/examples/12-transient-0/output/rust/src/lib.rs b/examples/12-transient-0/output/rust/src/lib.rs
index 3a02936..365a352 100644
--- a/examples/12-transient-0/output/rust/src/lib.rs
+++ b/examples/12-transient-0/output/rust/src/lib.rs
@@ -8,7 +8,19 @@ mod test {
     use std::path::PathBuf;
     use std::sync::Arc;
     use std::collections::HashMap;
-    use super::data::{EnumWithVariants, StructWithBool, StructWithDifferentSharedTypes, StructWithEnum, StructWithInt32, StructWithInt64, StructWithList, StructWithListOfShared, StructWithOption, StructWithSharedSumAndVariant, StructWithString, StructWithStruct, StructWithSum, SumWithVariants, VariantOne, VariantTwo };
+    use super::data::{EnumWithVariants, StructSingleton, StructWithBool, StructWithDifferentSharedTypes, StructWithEnum, StructWithInt32, StructWithInt64, StructWithList, StructWithListOfShared, StructWithOption, StructWithSharedSumAndVariant, StructWithString, StructWithStruct, StructWithSum, SumWithVariants, VariantOne, VariantTwo };
+
+    #[test]
+    fn struct_singleton() {
+        let value = StructSingleton;
+
+        assert_round_trip_encoding(
+            "StructSingleton",
+            value,
+            super::data::transient_0::encode_struct_singleton,
+            super::data::transient_0::decode_struct_singleton,
+        );
+    }
 
     #[test]
     fn struct_with_bool() {