Add generic struct example without any outputs

21 files changed, 2333 insertions, 0 deletions

diff --git a/examples/16-transient-0/output/java/.gitignore b/examples/16-transient-0/output/java/.gitignore
new file mode 100644
index 0000000..2fcf0b8
--- /dev/null
+++ b/examples/16-transient-0/output/java/.gitignore
@@ -0,0 +1,3 @@
+/src/gen/
+/target/
+/transient-0/
diff --git a/examples/16-transient-0/output/java/pom.xml b/examples/16-transient-0/output/java/pom.xml
new file mode 120000
index 0000000..445fa65
--- /dev/null
+++ b/examples/16-transient-0/output/java/pom.xml
@@ -0,0 +1 @@
+../../../templates/java-junit/pom.xml
\ No newline at end of file
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java
new file mode 100644
index 0000000..cfd16d5
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/GenericNative.java
@@ -0,0 +1,3 @@
+package org.zwobble.example.types.data;
+
+public record GenericNative<A, B>(A a, B b) {}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java
new file mode 100644
index 0000000..32796b5
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/HobgoblinNativeData.java
@@ -0,0 +1,13 @@
+package org.zwobble.example.types.data;
+
+public class HobgoblinNativeData {
+    private HobgoblinNativeData() {}
+
+    public static Native arbitraryNative() {
+        return new Native(0, 0);
+    }
+
+    public static <A, B> GenericNative<A, B> arbitraryGenericNative() {
+        throw new RuntimeException("TODO");
+    }
+}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java
new file mode 100644
index 0000000..366dd74
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/Native.java
@@ -0,0 +1,3 @@
+package org.zwobble.example.types.data;
+
+public record Native(int a, int b) {}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java
new file mode 100644
index 0000000..1eea54c
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/data/transient0/HobgoblinTransient0Data.java
@@ -0,0 +1,581 @@
+// Generated by hobgoblin.
+
+package org.zwobble.example.types.data.transient0;
+
+// Custom area start: org.zwobble.example.types.data.transient0.HobgoblinTransient0Data imports
+import java.io.InputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.List;
+import java.util.Map;
+import org.zwobble.example.types.data.GenericNative;
+import org.zwobble.example.types.data.Native;
+import org.zwobble.example.types.transient0.Decoder;
+import org.zwobble.example.types.transient0.Encoder;
+import org.zwobble.example.types.transient0.HobgoblinTransient0Builtins;
+import org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue;
+// Custom area end: org.zwobble.example.types.data.transient0.HobgoblinTransient0Data imports
+
+public final class HobgoblinTransient0Data {
+    public static void encodeStructSingleton(org.zwobble.example.types.data.StructSingleton value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+    }
+
+    public static org.zwobble.example.types.data.StructSingleton decodeStructSingleton(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        return org.zwobble.example.types.data.StructSingleton.INSTANCE;
+    }
+
+    public static void encodeStructWithBool(org.zwobble.example.types.data.StructWithBool value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeBool(value.a(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeBool(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithBool decodeStructWithBool(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeBool(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeBool(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithBool(a, b);
+    }
+
+    public static void encodeStructWithInt8(org.zwobble.example.types.data.StructWithInt8 value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt8(value.a(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt8(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithInt8 decodeStructWithInt8(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt8(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt8(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithInt8(a, b);
+    }
+
+    public static void encodeStructWithInt32(org.zwobble.example.types.data.StructWithInt32 value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.a(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithInt32 decodeStructWithInt32(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithInt32(a, b);
+    }
+
+    public static void encodeStructWithInt64(org.zwobble.example.types.data.StructWithInt64 value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(value.a(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithInt64 decodeStructWithInt64(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithInt64(a, b);
+    }
+
+    public static void encodeStructWithString(org.zwobble.example.types.data.StructWithString value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeString(value.a(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeString(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithString decodeStructWithString(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeString(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeString(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithString(a, b);
+    }
+
+    public static void encodeStructWithStruct(org.zwobble.example.types.data.StructWithStruct value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(value.inner(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.c(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithStruct decodeStructWithStruct(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var inner = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+        var c = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithStruct(inner, c);
+    }
+
+    public static void encodeStructWithList(org.zwobble.example.types.data.StructWithList value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64((long) value.a().size(), outputStream, sharedValues);
+        for (var element : value.a()) {
+            org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(element, outputStream, sharedValues);
+        }
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64((long) value.b().size(), outputStream, sharedValues);
+        for (var element : value.b()) {
+            org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(element, outputStream, sharedValues);
+        }
+    }
+
+    public static org.zwobble.example.types.data.StructWithList decodeStructWithList(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a$size = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (a$size > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Lists longer than Integer.MAX_VALUE are not supported");
+        }
+        var a = new java.util.ArrayList<java.lang.Long>((int) a$size);
+        for (long a$index = 0; a$index < a$size; a$index++) {
+            var a$element = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+            a.add(a$element);
+        }
+        var b$size = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (b$size > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Lists longer than Integer.MAX_VALUE are not supported");
+        }
+        var b = new java.util.ArrayList<org.zwobble.example.types.data.StructWithInt32>((int) b$size);
+        for (long b$index = 0; b$index < b$size; b$index++) {
+            var b$element = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+            b.add(b$element);
+        }
+        return new org.zwobble.example.types.data.StructWithList(a, b);
+    }
+
+    public static void encodeStructWithOption(org.zwobble.example.types.data.StructWithOption value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeBool(value.a().isPresent(), outputStream, sharedValues);
+        if (value.a().isPresent()) {
+            org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(value.a().get(), outputStream, sharedValues);
+        }
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeBool(value.b().isPresent(), outputStream, sharedValues);
+        if (value.b().isPresent()) {
+            org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(value.b().get(), outputStream, sharedValues);
+        }
+    }
+
+    public static org.zwobble.example.types.data.StructWithOption decodeStructWithOption(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a$isPresent = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeBool(inputStream, sharedValues);
+        java.util.Optional<java.lang.Long> a;
+        if (a$isPresent) {
+            var a$element = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+            a = java.util.Optional.of(a$element);
+        } else {
+            a = java.util.Optional.empty();
+        }
+        var b$isPresent = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeBool(inputStream, sharedValues);
+        java.util.Optional<org.zwobble.example.types.data.StructWithInt32> b;
+        if (b$isPresent) {
+            var b$element = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+            b = java.util.Optional.of(b$element);
+        } else {
+            b = java.util.Optional.empty();
+        }
+        return new org.zwobble.example.types.data.StructWithOption(a, b);
+    }
+
+    public static void encodeEnumWithVariants(org.zwobble.example.types.data.EnumWithVariants value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.ordinal(), outputStream, sharedValues);
+    }
+
+    private static final org.zwobble.example.types.data.EnumWithVariants[] EnumWithVariants$values = org.zwobble.example.types.data.EnumWithVariants.values();
+
+    public static org.zwobble.example.types.data.EnumWithVariants decodeEnumWithVariants(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var ordinal = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return EnumWithVariants$values[ordinal];
+    }
+
+    public static void encodeStructWithEnum(org.zwobble.example.types.data.StructWithEnum value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeEnumWithVariants(value.inner(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.c(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithEnum decodeStructWithEnum(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var inner = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeEnumWithVariants(inputStream, sharedValues);
+        var c = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithEnum(inner, c);
+    }
+
+    public static void encodeSumWithVariants(org.zwobble.example.types.data.SumWithVariants value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        switch (value) {
+            case org.zwobble.example.types.data.VariantOne value$0 -> {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(0, outputStream, sharedValues);
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeVariantOne(value$0, outputStream, sharedValues);
+            }
+            case org.zwobble.example.types.data.VariantTwo value$1 -> {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(1, outputStream, sharedValues);
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeVariantTwo(value$1, outputStream, sharedValues);
+            }
+        }
+    }
+
+    public static org.zwobble.example.types.data.SumWithVariants decodeSumWithVariants(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var variantTag = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        switch (variantTag) {
+            case 0 -> {
+                var value$0 = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeVariantOne(inputStream, sharedValues);
+                return value$0;
+            }
+            case 1 -> {
+                var value$1 = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeVariantTwo(inputStream, sharedValues);
+                return value$1;
+            }
+            default -> {
+                throw new java.lang.RuntimeException("unexpected data.SumWithVariants variant tag: " + variantTag);
+            }
+        }
+    }
+
+    public static void encodeVariantOne(org.zwobble.example.types.data.VariantOne value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.a(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.VariantOne decodeVariantOne(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.VariantOne(a);
+    }
+
+    public static void encodeVariantTwo(org.zwobble.example.types.data.VariantTwo value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(value.a(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.VariantTwo decodeVariantTwo(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.VariantTwo(a);
+    }
+
+    public static void encodeSumWithBoxedVariants(org.zwobble.example.types.data.SumWithBoxedVariants value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        switch (value) {
+            case org.zwobble.example.types.data.VariantOne value$0 -> {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(0, outputStream, sharedValues);
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeVariantOne(value$0, outputStream, sharedValues);
+            }
+            case org.zwobble.example.types.data.VariantTwo value$1 -> {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(1, outputStream, sharedValues);
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeVariantTwo(value$1, outputStream, sharedValues);
+            }
+        }
+    }
+
+    public static org.zwobble.example.types.data.SumWithBoxedVariants decodeSumWithBoxedVariants(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var variantTag = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        switch (variantTag) {
+            case 0 -> {
+                var value$0 = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeVariantOne(inputStream, sharedValues);
+                return value$0;
+            }
+            case 1 -> {
+                var value$1 = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeVariantTwo(inputStream, sharedValues);
+                return value$1;
+            }
+            default -> {
+                throw new java.lang.RuntimeException("unexpected data.SumWithBoxedVariants variant tag: " + variantTag);
+            }
+        }
+    }
+
+    public static void encodeStructWithSum(org.zwobble.example.types.data.StructWithSum value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeSumWithVariants(value.inner(), outputStream, sharedValues);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt32(value.b(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithSum decodeStructWithSum(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var inner = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeSumWithVariants(inputStream, sharedValues);
+        var b = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithSum(inner, b);
+    }
+
+    public static void encodeStructWithNative(org.zwobble.example.types.data.StructWithNative value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeNative(value.a(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithNative decodeStructWithNative(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeNative(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithNative(a);
+    }
+
+    public static void encodeStructWithGenericNative(org.zwobble.example.types.data.StructWithGenericNative value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeGenericNative(value.a(), outputStream, sharedValues, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::encodeInt32, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::encodeString);
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeGenericNative(value.b(), outputStream, sharedValues, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::encode$constructedType$0, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::encode$constructedType$1);
+    }
+
+    public static org.zwobble.example.types.data.StructWithGenericNative decodeStructWithGenericNative(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeGenericNative(inputStream, sharedValues, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::decodeInt32, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::decodeString);
+        var b = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeGenericNative(inputStream, sharedValues, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::decode$constructedType$0, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::decode$constructedType$1);
+        return new org.zwobble.example.types.data.StructWithGenericNative(a, b);
+    }
+
+    public static void encodeStructWithBox(org.zwobble.example.types.data.StructWithBox value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(value.inner(), outputStream, sharedValues);
+    }
+
+    public static org.zwobble.example.types.data.StructWithBox decodeStructWithBox(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var inner = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+        return new org.zwobble.example.types.data.StructWithBox(inner);
+    }
+
+    public static void encodeStructWithListOfShared(org.zwobble.example.types.data.StructWithListOfShared value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64((long) value.inner().size(), outputStream, sharedValues);
+        for (var element : value.inner()) {
+            {
+                var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, element));
+                if (existingId != null) {
+                    org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+                } else {
+                    org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                    sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, element), (long) sharedValues.size());
+                    org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(element, outputStream, sharedValues);
+                }
+            }
+        }
+    }
+
+    public static org.zwobble.example.types.data.StructWithListOfShared decodeStructWithListOfShared(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var inner$size = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (inner$size > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Lists longer than Integer.MAX_VALUE are not supported");
+        }
+        var inner = new java.util.ArrayList<org.zwobble.example.types.data.StructWithInt32>((int) inner$size);
+        for (long inner$index = 0; inner$index < inner$size; inner$index++) {
+            var inner$element$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+            if (inner$element$id > java.lang.Integer.MAX_VALUE) {
+                throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+            }
+            org.zwobble.example.types.data.StructWithInt32 inner$element;
+            if (inner$element$id < sharedValues.size()) {
+                inner$element = switch (sharedValues.get((int) inner$element$id)) {
+                    case org.zwobble.example.types.data.StructWithInt32 inner$element$decodedValue -> {
+                        yield inner$element$decodedValue;
+                    }
+                    default -> {
+                        throw new java.io.IOException("Shared value was of the wrong type");
+                    }
+                };
+            } else {
+                var inner$element$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+                sharedValues.add(inner$element$decodedValue);
+                inner$element = inner$element$decodedValue;
+            }
+            inner.add(inner$element);
+        }
+        return new org.zwobble.example.types.data.StructWithListOfShared(inner);
+    }
+
+    public static void encodeStructWithDifferentSharedTypes(org.zwobble.example.types.data.StructWithDifferentSharedTypes value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        {
+            var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, value.a()));
+            if (existingId != null) {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+            } else {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, value.a()), (long) sharedValues.size());
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(value.a(), outputStream, sharedValues);
+            }
+        }
+        {
+            var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(1, value.b()));
+            if (existingId != null) {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+            } else {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(1, value.b()), (long) sharedValues.size());
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt64(value.b(), outputStream, sharedValues);
+            }
+        }
+        {
+            var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, value.c()));
+            if (existingId != null) {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+            } else {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(0, value.c()), (long) sharedValues.size());
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeStructWithInt32(value.c(), outputStream, sharedValues);
+            }
+        }
+    }
+
+    public static org.zwobble.example.types.data.StructWithDifferentSharedTypes decodeStructWithDifferentSharedTypes(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (a$id > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+        }
+        org.zwobble.example.types.data.StructWithInt32 a;
+        if (a$id < sharedValues.size()) {
+            a = switch (sharedValues.get((int) a$id)) {
+                case org.zwobble.example.types.data.StructWithInt32 a$decodedValue -> {
+                    yield a$decodedValue;
+                }
+                default -> {
+                    throw new java.io.IOException("Shared value was of the wrong type");
+                }
+            };
+        } else {
+            var a$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+            sharedValues.add(a$decodedValue);
+            a = a$decodedValue;
+        }
+        var b$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (b$id > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+        }
+        org.zwobble.example.types.data.StructWithInt64 b;
+        if (b$id < sharedValues.size()) {
+            b = switch (sharedValues.get((int) b$id)) {
+                case org.zwobble.example.types.data.StructWithInt64 b$decodedValue -> {
+                    yield b$decodedValue;
+                }
+                default -> {
+                    throw new java.io.IOException("Shared value was of the wrong type");
+                }
+            };
+        } else {
+            var b$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt64(inputStream, sharedValues);
+            sharedValues.add(b$decodedValue);
+            b = b$decodedValue;
+        }
+        var c$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (c$id > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+        }
+        org.zwobble.example.types.data.StructWithInt32 c;
+        if (c$id < sharedValues.size()) {
+            c = switch (sharedValues.get((int) c$id)) {
+                case org.zwobble.example.types.data.StructWithInt32 c$decodedValue -> {
+                    yield c$decodedValue;
+                }
+                default -> {
+                    throw new java.io.IOException("Shared value was of the wrong type");
+                }
+            };
+        } else {
+            var c$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeStructWithInt32(inputStream, sharedValues);
+            sharedValues.add(c$decodedValue);
+            c = c$decodedValue;
+        }
+        return new org.zwobble.example.types.data.StructWithDifferentSharedTypes(a, b, c);
+    }
+
+    public static void encodeStructWithSharedSumAndVariant(org.zwobble.example.types.data.StructWithSharedSumAndVariant value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        {
+            var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(2, value.a()));
+            if (existingId != null) {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+            } else {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(2, value.a()), (long) sharedValues.size());
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeSumWithVariants(value.a(), outputStream, sharedValues);
+            }
+        }
+        {
+            var existingId = sharedValues.get(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(3, value.b()));
+            if (existingId != null) {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(existingId, outputStream, sharedValues);
+            } else {
+                org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64(sharedValues.size(), outputStream, sharedValues);
+                sharedValues.put(new org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue(3, value.b()), (long) sharedValues.size());
+                org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeVariantOne(value.b(), outputStream, sharedValues);
+            }
+        }
+    }
+
+    public static org.zwobble.example.types.data.StructWithSharedSumAndVariant decodeStructWithSharedSumAndVariant(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var a$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (a$id > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+        }
+        org.zwobble.example.types.data.SumWithVariants a;
+        if (a$id < sharedValues.size()) {
+            a = switch (sharedValues.get((int) a$id)) {
+                case org.zwobble.example.types.data.SumWithVariants a$decodedValue -> {
+                    yield a$decodedValue;
+                }
+                default -> {
+                    throw new java.io.IOException("Shared value was of the wrong type");
+                }
+            };
+        } else {
+            var a$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeSumWithVariants(inputStream, sharedValues);
+            sharedValues.add(a$decodedValue);
+            a = a$decodedValue;
+        }
+        var b$id = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (b$id > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Shared value IDs greater than Integer.MAX_VALUE are not supported");
+        }
+        org.zwobble.example.types.data.VariantOne b;
+        if (b$id < sharedValues.size()) {
+            b = switch (sharedValues.get((int) b$id)) {
+                case org.zwobble.example.types.data.VariantOne b$decodedValue -> {
+                    yield b$decodedValue;
+                }
+                default -> {
+                    throw new java.io.IOException("Shared value was of the wrong type");
+                }
+            };
+        } else {
+            var b$decodedValue = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeVariantOne(inputStream, sharedValues);
+            sharedValues.add(b$decodedValue);
+            b = b$decodedValue;
+        }
+        return new org.zwobble.example.types.data.StructWithSharedSumAndVariant(a, b);
+    }
+
+    private static void encode$constructedType$0(java.util.Optional<String> value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeBool(value.isPresent(), outputStream, sharedValues);
+        if (value.isPresent()) {
+            org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeString(value.get(), outputStream, sharedValues);
+        }
+    }
+
+    private static java.util.Optional<String> decode$constructedType$0(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var value$isPresent = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeBool(inputStream, sharedValues);
+        java.util.Optional<String> value;
+        if (value$isPresent) {
+            var value$element = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeString(inputStream, sharedValues);
+            value = java.util.Optional.of(value$element);
+        } else {
+            value = java.util.Optional.empty();
+        }
+        return value;
+    }
+
+    private static void encode$constructedType$1(org.zwobble.example.types.data.GenericNative<java.util.Optional<String>, org.zwobble.example.types.data.GenericNative<String, String>> value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeGenericNative(value, outputStream, sharedValues, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::encode$constructedType$0, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::encode$constructedType$2);
+    }
+
+    private static org.zwobble.example.types.data.GenericNative<java.util.Optional<String>, org.zwobble.example.types.data.GenericNative<String, String>> decode$constructedType$1(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var value = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeGenericNative(inputStream, sharedValues, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::decode$constructedType$0, org.zwobble.example.types.data.transient0.HobgoblinTransient0Data::decode$constructedType$2);
+        return value;
+    }
+
+    private static void encode$constructedType$2(org.zwobble.example.types.data.GenericNative<String, String> value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.encodeGenericNative(value, outputStream, sharedValues, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::encodeString, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::encodeString);
+    }
+
+    private static org.zwobble.example.types.data.GenericNative<String, String> decode$constructedType$2(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var value = org.zwobble.example.types.data.transient0.HobgoblinTransient0Data.decodeGenericNative(inputStream, sharedValues, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::decodeString, org.zwobble.example.types.transient0.HobgoblinTransient0Builtins::decodeString);
+        return value;
+    }
+
+    // Custom area start: org.zwobble.example.types.data.transient0.HobgoblinTransient0Data body
+    public static void encodeNative(
+        Native value,
+        OutputStream outputStream,
+        Map<HobgoblinTransient0TaggedSharedValue, Long> sharedValues
+    ) throws IOException {
+        HobgoblinTransient0Builtins.encodeInt32(value.a(), outputStream, sharedValues);
+        HobgoblinTransient0Builtins.encodeInt32(value.b(), outputStream, sharedValues);
+    }
+
+    public static Native decodeNative(
+        InputStream inputStream,
+        List<Object> sharedValues
+    ) throws IOException {
+        var a = HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        var b = HobgoblinTransient0Builtins.decodeInt32(inputStream, sharedValues);
+        return new Native(a, b);
+    }
+
+    public static <A, B> void encodeGenericNative(
+        GenericNative<A, B> value,
+        OutputStream outputStream,
+        Map<HobgoblinTransient0TaggedSharedValue, Long> sharedValues,
+        Encoder<A> encoderA,
+        Encoder<B> encoderB
+    ) throws IOException {
+        encoderA.encode(value.a(), outputStream, sharedValues);
+        encoderB.encode(value.b(), outputStream, sharedValues);
+    }
+
+    public static <A, B> GenericNative<A, B> decodeGenericNative(
+        InputStream inputStream,
+        List<Object> sharedValues,
+        Decoder<A> decoderA,
+        Decoder<B> decoderB
+    ) throws IOException {
+        var a = decoderA.decode(inputStream, sharedValues);
+        var b = decoderB.decode(inputStream, sharedValues);
+        return new GenericNative(a, b);
+    }
+    // Custom area end: org.zwobble.example.types.data.transient0.HobgoblinTransient0Data body
+}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java
new file mode 100644
index 0000000..ad1a6d0
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Decoder.java
@@ -0,0 +1,13 @@
+// Generated by hobgoblin.
+
+package org.zwobble.example.types.transient0;
+
+// Custom area start: org.zwobble.example.types.transient0.Decoder imports
+// Custom area end: org.zwobble.example.types.transient0.Decoder imports
+
+public interface Decoder<T> {
+    public T decode(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException;
+
+    // Custom area start: org.zwobble.example.types.transient0.Decoder body
+    // Custom area end: org.zwobble.example.types.transient0.Decoder body
+}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java
new file mode 100644
index 0000000..2ba43a6
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/Encoder.java
@@ -0,0 +1,13 @@
+// Generated by hobgoblin.
+
+package org.zwobble.example.types.transient0;
+
+// Custom area start: org.zwobble.example.types.transient0.Encoder imports
+// Custom area end: org.zwobble.example.types.transient0.Encoder imports
+
+public interface Encoder<T> {
+    public void encode(T value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException;
+
+    // Custom area start: org.zwobble.example.types.transient0.Encoder body
+    // Custom area end: org.zwobble.example.types.transient0.Encoder body
+}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java
new file mode 100644
index 0000000..293aee7
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0Builtins.java
@@ -0,0 +1,82 @@
+// Generated by hobgoblin.
+
+package org.zwobble.example.types.transient0;
+
+// Custom area start: org.zwobble.example.types.transient0.HobgoblinTransient0Builtins imports
+// Custom area end: org.zwobble.example.types.transient0.HobgoblinTransient0Builtins imports
+
+public final class HobgoblinTransient0Builtins {
+    public static void encodeBool(boolean value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        outputStream.write(value ? 1 : 0);
+    }
+
+    public static boolean decodeBool(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        return inputStream.read() != 0;
+    }
+
+    public static void encodeInt8(byte value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        outputStream.write(value);
+    }
+
+    public static byte decodeInt8(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        return (byte) inputStream.read();
+    }
+
+    public static void encodeInt32(int value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        outputStream.write(value >>> 0 & 255);
+        outputStream.write(value >>> 8 & 255);
+        outputStream.write(value >>> 16 & 255);
+        outputStream.write(value >>> 24 & 255);
+    }
+
+    public static int decodeInt32(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        int value = 0;
+        value = value | inputStream.read() << 0;
+        value = value | inputStream.read() << 8;
+        value = value | inputStream.read() << 16;
+        value = value | inputStream.read() << 24;
+        return value;
+    }
+
+    public static void encodeInt64(long value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        outputStream.write((int) (value >>> 0 & 255));
+        outputStream.write((int) (value >>> 8 & 255));
+        outputStream.write((int) (value >>> 16 & 255));
+        outputStream.write((int) (value >>> 24 & 255));
+        outputStream.write((int) (value >>> 32 & 255));
+        outputStream.write((int) (value >>> 40 & 255));
+        outputStream.write((int) (value >>> 48 & 255));
+        outputStream.write((int) (value >>> 56 & 255));
+    }
+
+    public static long decodeInt64(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        long value = 0;
+        value = value | inputStream.read() << 0;
+        value = value | inputStream.read() << 8;
+        value = value | inputStream.read() << 16;
+        value = value | inputStream.read() << 24;
+        value = value | inputStream.read() << 32;
+        value = value | inputStream.read() << 40;
+        value = value | inputStream.read() << 48;
+        value = value | inputStream.read() << 56;
+        return value;
+    }
+
+    public static void encodeString(String value, java.io.OutputStream outputStream, java.util.Map<org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue, java.lang.Long> sharedValues) throws java.io.IOException {
+        var bytes = value.getBytes(java.nio.charset.StandardCharsets.UTF_8);
+        org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.encodeInt64((long) bytes.length, outputStream, sharedValues);
+        outputStream.write(bytes);
+    }
+
+    public static String decodeString(java.io.InputStream inputStream, java.util.List<java.lang.Object> sharedValues) throws java.io.IOException {
+        var bytesLength = org.zwobble.example.types.transient0.HobgoblinTransient0Builtins.decodeInt64(inputStream, sharedValues);
+        if (bytesLength > java.lang.Integer.MAX_VALUE) {
+            throw new java.io.IOException("Strings longer than Integer.MAX_VALUE are not supported");
+        }
+        var bytes = inputStream.readNBytes((int) bytesLength);
+        return new String(bytes, java.nio.charset.StandardCharsets.UTF_8);
+    }
+
+    // Custom area start: org.zwobble.example.types.transient0.HobgoblinTransient0Builtins body
+    // Custom area end: org.zwobble.example.types.transient0.HobgoblinTransient0Builtins body
+}
diff --git a/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java
new file mode 100644
index 0000000..6c5b520
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/main/java/org/zwobble/example/types/transient0/HobgoblinTransient0TaggedSharedValue.java
@@ -0,0 +1,22 @@
+// Generated by hobgoblin.
+
+package org.zwobble.example.types.transient0;
+
+// Custom area start: org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue imports
+// Custom area end: org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue imports
+
+public record HobgoblinTransient0TaggedSharedValue(
+    long typeId,
+    java.lang.Object value
+) {
+    public boolean equals(java.lang.Object other) {
+        return other instanceof org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue otherSharedValue && this.typeId == otherSharedValue.typeId && this.value == otherSharedValue.value;
+    }
+
+    public int hashCode() {
+        return 37 * (37 * 17 + java.lang.Long.hashCode(this.typeId)) + java.lang.System.identityHashCode(this.value);
+    }
+
+    // Custom area start: org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue body
+    // Custom area end: org.zwobble.example.types.transient0.HobgoblinTransient0TaggedSharedValue body
+}
diff --git a/examples/16-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java b/examples/16-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
new file mode 100644
index 0000000..ba43aed
--- /dev/null
+++ b/examples/16-transient-0/output/java/src/test/java/org/zwobble/example/Transient0Tests.java
@@ -0,0 +1,392 @@
+package org.zwobble.example;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+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.GenericNative;
+import org.zwobble.example.types.data.Native;
+import org.zwobble.example.types.data.StructSingleton;
+import org.zwobble.example.types.data.StructWithBool;
+import org.zwobble.example.types.data.StructWithBox;
+import org.zwobble.example.types.data.StructWithDifferentSharedTypes;
+import org.zwobble.example.types.data.StructWithEnum;
+import org.zwobble.example.types.data.StructWithGenericNative;
+import org.zwobble.example.types.data.StructWithInt8;
+import org.zwobble.example.types.data.StructWithInt32;
+import org.zwobble.example.types.data.StructWithInt64;
+import org.zwobble.example.types.data.StructWithList;
+import org.zwobble.example.types.data.StructWithListOfShared;
+import org.zwobble.example.types.data.StructWithNative;
+import org.zwobble.example.types.data.StructWithOption;
+import org.zwobble.example.types.data.StructWithSharedSumAndVariant;
+import org.zwobble.example.types.data.StructWithString;
+import org.zwobble.example.types.data.StructWithStruct;
+import org.zwobble.example.types.data.StructWithSum;
+import org.zwobble.example.types.data.VariantOne;
+import org.zwobble.example.types.data.VariantTwo;
+import org.zwobble.example.types.data.transient0.HobgoblinTransient0Data;
+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);
+
+        assertRoundTripEncoding(
+            "StructWithBool",
+            value,
+            HobgoblinTransient0Data::encodeStructWithBool,
+            HobgoblinTransient0Data::decodeStructWithBool
+        );
+    }
+
+    @Test
+    public void structWithInt8() throws IOException {
+        var value = new StructWithInt8((byte)10, (byte)25);
+
+        assertRoundTripEncoding(
+            "StructWithInt8",
+            value,
+            HobgoblinTransient0Data::encodeStructWithInt8,
+            HobgoblinTransient0Data::decodeStructWithInt8
+        );
+    }
+
+    @Test
+    public void structWithInt32() throws IOException {
+        var value = new StructWithInt32(10, 25);
+
+        assertRoundTripEncoding(
+            "StructWithInt32",
+            value,
+            HobgoblinTransient0Data::encodeStructWithInt32,
+            HobgoblinTransient0Data::decodeStructWithInt32
+        );
+    }
+
+    @Test
+    public void structWithInt64() throws IOException {
+        var value = new StructWithInt64(10, 25);
+
+        assertRoundTripEncoding(
+            "StructWithInt64",
+            value,
+            HobgoblinTransient0Data::encodeStructWithInt64,
+            HobgoblinTransient0Data::decodeStructWithInt64
+        );
+    }
+
+    @Test
+    public void structWithString() throws IOException {
+        var value = new StructWithString("abc", "def");
+
+        assertRoundTripEncoding(
+            "StructWithString",
+            value,
+            HobgoblinTransient0Data::encodeStructWithString,
+            HobgoblinTransient0Data::decodeStructWithString
+        );
+    }
+
+    @Test
+    public void structWithStruct() throws IOException {
+        var value = new StructWithStruct(new StructWithInt32(10, 25), 42);
+
+        assertRoundTripEncoding(
+            "StructWithStruct",
+            value,
+            HobgoblinTransient0Data::encodeStructWithStruct,
+            HobgoblinTransient0Data::decodeStructWithStruct
+        );
+    }
+
+    @Test
+    public void structWithList() throws IOException {
+        var value = new StructWithList(
+            List.of(10L, 25L),
+            List.of(
+                new StructWithInt32(42, 47),
+                new StructWithInt32(52, 57),
+                new StructWithInt32(62, 67)
+            )
+        );
+
+        assertRoundTripEncoding(
+            "StructWithList",
+            value,
+            HobgoblinTransient0Data::encodeStructWithList,
+            HobgoblinTransient0Data::decodeStructWithList
+        );
+    }
+
+    @Test
+    public void structWithOptionNone() throws IOException {
+        var value = new StructWithOption(
+            Optional.empty(),
+            Optional.empty()
+        );
+
+        assertRoundTripEncoding(
+            "StructWithOption_None",
+            value,
+            HobgoblinTransient0Data::encodeStructWithOption,
+            HobgoblinTransient0Data::decodeStructWithOption
+        );
+    }
+
+    @Test
+    public void structWithOptionSome() throws IOException {
+        var value = new StructWithOption(
+            Optional.of(10L),
+            Optional.of(new StructWithInt32(42, 47))
+        );
+
+        assertRoundTripEncoding(
+            "StructWithOption_Some",
+            value,
+            HobgoblinTransient0Data::encodeStructWithOption,
+            HobgoblinTransient0Data::decodeStructWithOption
+        );
+    }
+
+    @Test
+    public void enumWithVariants() throws IOException {
+        assertRoundTripEncoding(
+            "EnumWithVariants_zero",
+            EnumWithVariants.ZERO,
+            HobgoblinTransient0Data::encodeEnumWithVariants,
+            HobgoblinTransient0Data::decodeEnumWithVariants
+        );
+
+        assertRoundTripEncoding(
+            "EnumWithVariants_one",
+            EnumWithVariants.ONE,
+            HobgoblinTransient0Data::encodeEnumWithVariants,
+            HobgoblinTransient0Data::decodeEnumWithVariants
+        );
+
+        assertRoundTripEncoding(
+            "EnumWithVariants_two",
+            EnumWithVariants.TWO,
+            HobgoblinTransient0Data::encodeEnumWithVariants,
+            HobgoblinTransient0Data::decodeEnumWithVariants
+        );
+    }
+
+    @Test
+    public void structWithEnum() throws IOException {
+        var value = new StructWithEnum(
+            EnumWithVariants.ONE,
+            42
+        );
+
+        assertRoundTripEncoding(
+            "StructWithEnum",
+            value,
+            HobgoblinTransient0Data::encodeStructWithEnum,
+            HobgoblinTransient0Data::decodeStructWithEnum
+        );
+    }
+
+    @Test
+    public void sumWithVariants() throws IOException {
+        assertRoundTripEncoding(
+            "SumWithVariants_VariantOne",
+            new VariantOne(10),
+            HobgoblinTransient0Data::encodeSumWithVariants,
+            HobgoblinTransient0Data::decodeSumWithVariants
+        );
+
+        assertRoundTripEncoding(
+            "SumWithVariants_VariantTwo",
+            new VariantTwo(25),
+            HobgoblinTransient0Data::encodeSumWithVariants,
+            HobgoblinTransient0Data::decodeSumWithVariants
+        );
+    }
+
+    @Test
+    public void sumWithBoxedVariants() throws IOException {
+        assertRoundTripEncoding(
+            "SumWithBoxedVariants_VariantOne",
+            new VariantOne(10),
+            HobgoblinTransient0Data::encodeSumWithBoxedVariants,
+            HobgoblinTransient0Data::decodeSumWithBoxedVariants
+        );
+
+        assertRoundTripEncoding(
+            "SumWithBoxedVariants_VariantTwo",
+            new VariantTwo(25),
+            HobgoblinTransient0Data::encodeSumWithBoxedVariants,
+            HobgoblinTransient0Data::decodeSumWithBoxedVariants
+        );
+    }
+
+    @Test
+    public void structWithSum() throws IOException {
+        var value = new StructWithSum(
+            new VariantTwo(25),
+            42
+        );
+
+        assertRoundTripEncoding(
+            "StructWithSum",
+            value,
+            HobgoblinTransient0Data::encodeStructWithSum,
+            HobgoblinTransient0Data::decodeStructWithSum
+        );
+    }
+
+    @Test
+    public void structWithNative() throws IOException {
+        var value = new StructWithNative(
+            new Native(10, 25)
+        );
+
+        assertRoundTripEncoding(
+            "StructWithNative",
+            value,
+            HobgoblinTransient0Data::encodeStructWithNative,
+            HobgoblinTransient0Data::decodeStructWithNative
+        );
+    }
+
+    @Test
+    public void structWithGenericNative() throws IOException {
+        var value = new StructWithGenericNative(
+            new GenericNative(10, "x1"),
+            new GenericNative(
+                Optional.of("x2"),
+                new GenericNative(
+                    Optional.of("x3"),
+                    new GenericNative("x4", "x5")
+                )
+            )
+        );
+
+        assertRoundTripEncoding(
+            "StructWithGenericNative",
+            value,
+            HobgoblinTransient0Data::encodeStructWithGenericNative,
+            HobgoblinTransient0Data::decodeStructWithGenericNative
+        );
+    }
+
+    @Test
+    public void structWithBox() throws IOException {
+        var value = new StructWithBox(
+            new StructWithInt32(10, 25)
+        );
+
+        assertRoundTripEncoding(
+            "StructWithBox",
+            value,
+            HobgoblinTransient0Data::encodeStructWithBox,
+            HobgoblinTransient0Data::decodeStructWithBox
+        );
+    }
+
+    @Test
+    public void structWithListOfShared() throws IOException {
+        var a = new StructWithInt32(10, 25);
+        var b = new StructWithInt32(42, 47);
+
+        var value = new StructWithListOfShared(List.of(a, a, b, a, b));
+
+        var decodedValue = assertRoundTripEncoding(
+            "StructWithListOfShared",
+            value,
+            HobgoblinTransient0Data::encodeStructWithListOfShared,
+            HobgoblinTransient0Data::decodeStructWithListOfShared
+        );
+        Assertions.assertSame(decodedValue.inner().get(0), decodedValue.inner().get(1));
+        Assertions.assertSame(decodedValue.inner().get(0), decodedValue.inner().get(3));
+        Assertions.assertSame(decodedValue.inner().get(2), decodedValue.inner().get(4));
+    }
+
+    @Test
+    public void structWithDifferentSharedTypes() throws IOException {
+        var a = new StructWithInt32(10, 25);
+        var b = new StructWithInt64(42, 47);
+        var c = new StructWithInt32(52, 57);
+
+        var value = new StructWithDifferentSharedTypes(a, b, c);
+
+        assertRoundTripEncoding(
+            "StructWithDifferentSharedTypes",
+            value,
+            HobgoblinTransient0Data::encodeStructWithDifferentSharedTypes,
+            HobgoblinTransient0Data::decodeStructWithDifferentSharedTypes
+        );
+    }
+
+    @Test
+    public void structWithSharedSumAndVariant() throws IOException {
+        var a = new VariantOne(10);
+
+        var value = new StructWithSharedSumAndVariant(a, a);
+
+        assertRoundTripEncoding(
+            "StructWithSharedSumAndVariant",
+            value,
+            HobgoblinTransient0Data::encodeStructWithSharedSumAndVariant,
+            HobgoblinTransient0Data::decodeStructWithSharedSumAndVariant
+        );
+    }
+
+    private <T> T assertRoundTripEncoding(
+        String name,
+        T value,
+        Encoder<T> encoder,
+        Decoder<T> decoder
+    ) throws IOException {
+        var outputStream = new ByteArrayOutputStream();
+        encoder.encode(value, outputStream, new HashMap<>());
+        var bytes = outputStream.toByteArray();
+
+        var outputDir = System.getenv("HOBGOBLIN_OUTPUT_DIR");
+        var transient0OutputDir = Path.of(outputDir).resolve("transient-0");
+        Files.createDirectories(transient0OutputDir);
+        var transient0OutputPath = transient0OutputDir.resolve(name);
+        Files.write(transient0OutputPath, bytes);
+
+        var inputStream = new ByteArrayInputStream(bytes);
+        var decodedValue = decoder.decode(inputStream, new ArrayList<>());
+
+        Assertions.assertEquals(value, decodedValue);
+
+        return decodedValue;
+    }
+
+    private interface Encoder<T> {
+        void encode(T value, OutputStream outputStream, Map<HobgoblinTransient0TaggedSharedValue, Long> sharedValues) throws IOException;
+    }
+
+    private interface Decoder<T> {
+        T decode(InputStream inputStream, List<Object> sharedValues) throws IOException;
+    }
+}
diff --git a/examples/16-transient-0/output/rust/.gitignore b/examples/16-transient-0/output/rust/.gitignore
new file mode 100644
index 0000000..fc03479
--- /dev/null
+++ b/examples/16-transient-0/output/rust/.gitignore
@@ -0,0 +1,2 @@
+/target
+/transient-0/
diff --git a/examples/16-transient-0/output/rust/Cargo.lock b/examples/16-transient-0/output/rust/Cargo.lock
new file mode 100644
index 0000000..9dc6e3e
--- /dev/null
+++ b/examples/16-transient-0/output/rust/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "example"
+version = "0.1.0"
diff --git a/examples/16-transient-0/output/rust/Cargo.toml b/examples/16-transient-0/output/rust/Cargo.toml
new file mode 100644
index 0000000..5d4c622
--- /dev/null
+++ b/examples/16-transient-0/output/rust/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "example"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/examples/16-transient-0/output/rust/rust-toolchain.toml b/examples/16-transient-0/output/rust/rust-toolchain.toml
new file mode 100644
index 0000000..4fedb95
--- /dev/null
+++ b/examples/16-transient-0/output/rust/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.96"
diff --git a/examples/16-transient-0/output/rust/src/data.rs b/examples/16-transient-0/output/rust/src/data.rs
new file mode 100644
index 0000000..2b890c2
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/data.rs
@@ -0,0 +1,66 @@
+include!("./gen/data.rs");
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct Native {
+    pub a: i32,
+    pub b: i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct GenericNative<A, B> {
+    pub a: A,
+    pub b: B,
+}
+
+
+pub mod transient_0 {
+    use ::std::any::Any;
+    use ::std::sync::Arc;
+    use ::std::vec::Vec;
+    use crate::transient_0::{Decode, Encode};
+    use super::{GenericNative, Native};
+
+    include!("./gen/data/transient_0.rs");
+
+    pub fn encode_native(
+        value: &Native,
+        writer: &mut impl std::io::Write,
+        shared_values: &mut ::std::collections::HashMap::<usize, i64>,
+    ) -> std::io::Result<()> {
+        crate::transient_0::encode_int_32(&value.a, writer, shared_values)?;
+        crate::transient_0::encode_int_32(&value.b, writer, shared_values)?;
+        Ok(())
+    }
+
+    pub fn decode_native(
+        reader: &mut impl std::io::Read,
+        shared_values: &mut Vec<Arc::<dyn Any + Sync + Send>>,
+    ) -> std::io::Result<Native> {
+        let a = crate::transient_0::decode_int_32(reader, shared_values)?;
+        let b = crate::transient_0::decode_int_32(reader, shared_values)?;
+        Ok(Native { a, b })
+    }
+
+    pub fn encode_generic_native<TWrite: std::io::Write, A, B>(
+        value: &GenericNative<A, B>,
+        writer: &mut TWrite,
+        shared_values: &mut ::std::collections::HashMap::<usize, i64>,
+        encode_a: Encode<A, TWrite>,
+        encode_b: Encode<B, TWrite>,
+    ) -> std::io::Result<()> {
+        encode_a(&value.a, writer, shared_values)?;
+        encode_b(&value.b, writer, shared_values)?;
+        Ok(())
+    }
+
+    pub fn decode_generic_native<TRead: std::io::Read, A, B>(
+        reader: &mut TRead,
+        shared_values: &mut Vec<Arc::<dyn Any + Sync + Send>>,
+        decode_a: Decode<TRead, A>,
+        decode_b: Decode<TRead, B>,
+    ) -> std::io::Result<GenericNative<A, B>> {
+        let a = decode_a(reader, shared_values)?;
+        let b = decode_b(reader, shared_values)?;
+        Ok(GenericNative { a, b })
+    }
+}
diff --git a/examples/16-transient-0/output/rust/src/gen/data.rs b/examples/16-transient-0/output/rust/src/gen/data.rs
new file mode 100644
index 0000000..6f1d5b5
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/gen/data.rs
@@ -0,0 +1,151 @@
+// Generated by hobgoblin.
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructSingleton;
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithBool {
+    pub a: ::core::primitive::bool,
+    pub b: ::core::primitive::bool,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithInt8 {
+    pub a: ::core::primitive::i8,
+    pub b: ::core::primitive::i8,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithInt32 {
+    pub a: ::core::primitive::i32,
+    pub b: ::core::primitive::i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithInt64 {
+    pub a: ::core::primitive::i64,
+    pub b: ::core::primitive::i64,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithString {
+    pub a: ::std::string::String,
+    pub b: ::std::string::String,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithStruct {
+    pub inner: crate::data::StructWithInt32,
+    pub c: ::core::primitive::i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithList {
+    pub a: ::std::vec::Vec::<::core::primitive::i64>,
+    pub b: ::std::vec::Vec::<crate::data::StructWithInt32>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithOption {
+    pub a: ::std::option::Option::<::core::primitive::i64>,
+    pub b: ::std::option::Option::<crate::data::StructWithInt32>,
+}
+
+#[derive(Clone, Copy, Debug, Hash, PartialEq)]
+pub enum EnumWithVariants {
+    Zero,
+    One,
+    Two,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithEnum {
+    pub inner: crate::data::EnumWithVariants,
+    pub c: ::core::primitive::i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub enum SumWithVariants {
+    VariantOne(crate::data::VariantOne),
+    VariantTwo(crate::data::VariantTwo),
+}
+
+impl ::std::convert::From::<crate::data::VariantOne> for crate::data::SumWithVariants {
+    fn from(value: crate::data::VariantOne) -> Self {
+        Self::VariantOne(value)
+    }
+}
+
+impl ::std::convert::From::<crate::data::VariantTwo> for crate::data::SumWithVariants {
+    fn from(value: crate::data::VariantTwo) -> Self {
+        Self::VariantTwo(value)
+    }
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct VariantOne {
+    pub a: ::core::primitive::i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct VariantTwo {
+    pub a: ::core::primitive::i64,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub enum SumWithBoxedVariants {
+    VariantOne(::std::boxed::Box::<crate::data::VariantOne>),
+    VariantTwo(::std::boxed::Box::<crate::data::VariantTwo>),
+}
+
+impl ::std::convert::From::<crate::data::VariantOne> for crate::data::SumWithBoxedVariants {
+    fn from(value: crate::data::VariantOne) -> Self {
+        Self::VariantOne(::std::boxed::Box::new(value))
+    }
+}
+
+impl ::std::convert::From::<crate::data::VariantTwo> for crate::data::SumWithBoxedVariants {
+    fn from(value: crate::data::VariantTwo) -> Self {
+        Self::VariantTwo(::std::boxed::Box::new(value))
+    }
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithSum {
+    pub inner: crate::data::SumWithVariants,
+    pub b: ::core::primitive::i32,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithNative {
+    pub a: crate::data::Native,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithGenericNative {
+    pub a: crate::data::GenericNative::<::core::primitive::i32, ::std::string::String>,
+    pub b: crate::data::GenericNative::<::std::option::Option::<::std::string::String>, crate::data::GenericNative::<::std::option::Option::<::std::string::String>, crate::data::GenericNative::<::std::string::String, ::std::string::String>>>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithBox {
+    pub inner: ::std::boxed::Box::<crate::data::StructWithInt32>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithListOfShared {
+    pub inner: ::std::vec::Vec::<::std::sync::Arc::<crate::data::StructWithInt32>>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithDifferentSharedTypes {
+    pub a: ::std::sync::Arc::<crate::data::StructWithInt32>,
+    pub b: ::std::sync::Arc::<crate::data::StructWithInt64>,
+    pub c: ::std::sync::Arc::<crate::data::StructWithInt32>,
+}
+
+#[derive(Clone, Debug, Hash, PartialEq)]
+pub struct StructWithSharedSumAndVariant {
+    pub a: ::std::sync::Arc::<crate::data::SumWithVariants>,
+    pub b: ::std::sync::Arc::<crate::data::VariantOne>,
+}
diff --git a/examples/16-transient-0/output/rust/src/gen/data/transient_0.rs b/examples/16-transient-0/output/rust/src/gen/data/transient_0.rs
new file mode 100644
index 0000000..b72964c
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/gen/data/transient_0.rs
@@ -0,0 +1,531 @@
+// 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)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_bool(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::StructWithBool> {
+    let a = crate::transient_0::decode_bool(reader, shared_values)?;
+    let b = crate::transient_0::decode_bool(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithBool { a: a, b: b })
+}
+
+pub fn encode_struct_with_int_8(value: &crate::data::StructWithInt8, 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_int_8(&value.a, writer, shared_values)?;
+    crate::transient_0::encode_int_8(&value.b, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_int_8(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::StructWithInt8> {
+    let a = crate::transient_0::decode_int_8(reader, shared_values)?;
+    let b = crate::transient_0::decode_int_8(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithInt8 { a: a, b: b })
+}
+
+pub fn encode_struct_with_int_32(value: &crate::data::StructWithInt32, 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_int_32(&value.a, writer, shared_values)?;
+    crate::transient_0::encode_int_32(&value.b, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_int_32(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::StructWithInt32> {
+    let a = crate::transient_0::decode_int_32(reader, shared_values)?;
+    let b = crate::transient_0::decode_int_32(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithInt32 { a: a, b: b })
+}
+
+pub fn encode_struct_with_int_64(value: &crate::data::StructWithInt64, 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_int_64(&value.a, writer, shared_values)?;
+    crate::transient_0::encode_int_64(&value.b, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_int_64(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::StructWithInt64> {
+    let a = crate::transient_0::decode_int_64(reader, shared_values)?;
+    let b = crate::transient_0::decode_int_64(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithInt64 { a: a, b: b })
+}
+
+pub fn encode_struct_with_string(value: &crate::data::StructWithString, 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_string(&value.a, writer, shared_values)?;
+    crate::transient_0::encode_string(&value.b, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_string(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::StructWithString> {
+    let a = crate::transient_0::decode_string(reader, shared_values)?;
+    let b = crate::transient_0::decode_string(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithString { a: a, b: b })
+}
+
+pub fn encode_struct_with_struct(value: &crate::data::StructWithStruct, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_struct_with_int_32(&value.inner, writer, shared_values)?;
+    crate::transient_0::encode_int_32(&value.c, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_struct(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::StructWithStruct> {
+    let inner = crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?;
+    let c = crate::transient_0::decode_int_32(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithStruct { inner: inner, c: c })
+}
+
+pub fn encode_struct_with_list(value: &crate::data::StructWithList, 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_int_64(&(((&value.a).len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?, writer, shared_values)?;
+        for element in &value.a {
+            crate::transient_0::encode_int_64(element, writer, shared_values)?;
+        };
+    };
+    {
+        crate::transient_0::encode_int_64(&(((&value.b).len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?, writer, shared_values)?;
+        for element in &value.b {
+            crate::data::transient_0::encode_struct_with_int_32(element, writer, shared_values)?;
+        };
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_list(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::StructWithList> {
+    let a = {
+        let len = crate::transient_0::decode_int_64(reader, shared_values)?;
+        let mut elements = ::std::vec::Vec::with_capacity((len.try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?);
+        for _ in 0..len {
+            elements.push(crate::transient_0::decode_int_64(reader, shared_values)?);
+        };
+        elements
+    };
+    let b = {
+        let len = crate::transient_0::decode_int_64(reader, shared_values)?;
+        let mut elements = ::std::vec::Vec::with_capacity((len.try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?);
+        for _ in 0..len {
+            elements.push(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?);
+        };
+        elements
+    };
+    ::std::io::Result::Ok(crate::data::StructWithList { a: a, b: b })
+}
+
+pub fn encode_struct_with_option(value: &crate::data::StructWithOption, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    match &value.a {
+        ::std::option::Option::Some(value) => {
+            crate::transient_0::encode_bool(&true, writer, shared_values)?;
+            crate::transient_0::encode_int_64(&value, writer, shared_values)?;
+        },
+        ::std::option::Option::None => {
+            crate::transient_0::encode_bool(&false, writer, shared_values)?;
+        },
+    };
+    match &value.b {
+        ::std::option::Option::Some(value) => {
+            crate::transient_0::encode_bool(&true, writer, shared_values)?;
+            crate::data::transient_0::encode_struct_with_int_32(&value, writer, shared_values)?;
+        },
+        ::std::option::Option::None => {
+            crate::transient_0::encode_bool(&false, writer, shared_values)?;
+        },
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_option(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::StructWithOption> {
+    let a = {
+        let is_some = crate::transient_0::decode_bool(reader, shared_values)?;
+        if is_some {
+            ::std::option::Option::Some(crate::transient_0::decode_int_64(reader, shared_values)?)
+        } else {
+            ::std::option::Option::None
+        }
+    };
+    let b = {
+        let is_some = crate::transient_0::decode_bool(reader, shared_values)?;
+        if is_some {
+            ::std::option::Option::Some(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?)
+        } else {
+            ::std::option::Option::None
+        }
+    };
+    ::std::io::Result::Ok(crate::data::StructWithOption { a: a, b: b })
+}
+
+pub fn encode_enum_with_variants(value: &crate::data::EnumWithVariants, 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_int_32(&match value {
+        crate::data::EnumWithVariants::Zero => 0,
+        crate::data::EnumWithVariants::One => 1,
+        crate::data::EnumWithVariants::Two => 2,
+    }, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_enum_with_variants(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::EnumWithVariants> {
+    ::std::io::Result::Ok(match &crate::transient_0::decode_int_32(reader, shared_values)? {
+        0 => crate::data::EnumWithVariants::Zero,
+        1 => crate::data::EnumWithVariants::One,
+        2 => crate::data::EnumWithVariants::Two,
+        _ => ::std::result::Result::Err(::std::io::Error::new(::std::io::ErrorKind::InvalidData, "unrecognised variant tag for data.EnumWithVariants"))?,
+    })
+}
+
+pub fn encode_struct_with_enum(value: &crate::data::StructWithEnum, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_enum_with_variants(&value.inner, writer, shared_values)?;
+    crate::transient_0::encode_int_32(&value.c, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_enum(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::StructWithEnum> {
+    let inner = crate::data::transient_0::decode_enum_with_variants(reader, shared_values)?;
+    let c = crate::transient_0::decode_int_32(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithEnum { inner: inner, c: c })
+}
+
+pub fn encode_sum_with_variants(value: &crate::data::SumWithVariants, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    match value {
+        crate::data::SumWithVariants::VariantOne(value) => {
+            crate::transient_0::encode_int_32(&0, writer, shared_values)?;
+            crate::data::transient_0::encode_variant_one(value, writer, shared_values)?;
+        },
+        crate::data::SumWithVariants::VariantTwo(value) => {
+            crate::transient_0::encode_int_32(&1, writer, shared_values)?;
+            crate::data::transient_0::encode_variant_two(value, writer, shared_values)?;
+        },
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_sum_with_variants(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::SumWithVariants> {
+    ::std::io::Result::Ok(match &crate::transient_0::decode_int_32(reader, shared_values)? {
+        0 => crate::data::SumWithVariants::VariantOne(crate::data::transient_0::decode_variant_one(reader, shared_values)?),
+        1 => crate::data::SumWithVariants::VariantTwo(crate::data::transient_0::decode_variant_two(reader, shared_values)?),
+        _ => ::std::result::Result::Err(::std::io::Error::new(::std::io::ErrorKind::InvalidData, "unrecognised variant tag for data.SumWithVariants"))?,
+    })
+}
+
+pub fn encode_variant_one(value: &crate::data::VariantOne, 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_int_32(&value.a, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_variant_one(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::VariantOne> {
+    let a = crate::transient_0::decode_int_32(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::VariantOne { a: a })
+}
+
+pub fn encode_variant_two(value: &crate::data::VariantTwo, 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_int_64(&value.a, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_variant_two(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::VariantTwo> {
+    let a = crate::transient_0::decode_int_64(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::VariantTwo { a: a })
+}
+
+pub fn encode_sum_with_boxed_variants(value: &crate::data::SumWithBoxedVariants, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    match value {
+        crate::data::SumWithBoxedVariants::VariantOne(value) => {
+            crate::transient_0::encode_int_32(&0, writer, shared_values)?;
+            crate::data::transient_0::encode_variant_one(value.as_ref(), writer, shared_values)?;
+        },
+        crate::data::SumWithBoxedVariants::VariantTwo(value) => {
+            crate::transient_0::encode_int_32(&1, writer, shared_values)?;
+            crate::data::transient_0::encode_variant_two(value.as_ref(), writer, shared_values)?;
+        },
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_sum_with_boxed_variants(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::SumWithBoxedVariants> {
+    ::std::io::Result::Ok(match &crate::transient_0::decode_int_32(reader, shared_values)? {
+        0 => crate::data::SumWithBoxedVariants::VariantOne(::std::boxed::Box::new(crate::data::transient_0::decode_variant_one(reader, shared_values)?)),
+        1 => crate::data::SumWithBoxedVariants::VariantTwo(::std::boxed::Box::new(crate::data::transient_0::decode_variant_two(reader, shared_values)?)),
+        _ => ::std::result::Result::Err(::std::io::Error::new(::std::io::ErrorKind::InvalidData, "unrecognised variant tag for data.SumWithBoxedVariants"))?,
+    })
+}
+
+pub fn encode_struct_with_sum(value: &crate::data::StructWithSum, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_sum_with_variants(&value.inner, writer, shared_values)?;
+    crate::transient_0::encode_int_32(&value.b, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_sum(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::StructWithSum> {
+    let inner = crate::data::transient_0::decode_sum_with_variants(reader, shared_values)?;
+    let b = crate::transient_0::decode_int_32(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithSum { inner: inner, b: b })
+}
+
+pub fn encode_struct_with_native(value: &crate::data::StructWithNative, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_native(&value.a, writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_native(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::StructWithNative> {
+    let a = crate::data::transient_0::decode_native(reader, shared_values)?;
+    ::std::io::Result::Ok(crate::data::StructWithNative { a: a })
+}
+
+pub fn encode_struct_with_generic_native(value: &crate::data::StructWithGenericNative, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_generic_native(&value.a, writer, shared_values, |value, writer, shared_values| {
+        crate::transient_0::encode_int_32(value, writer, shared_values)?;
+        ::std::io::Result::Ok(())
+    }, |value, writer, shared_values| {
+        crate::transient_0::encode_string(value, writer, shared_values)?;
+        ::std::io::Result::Ok(())
+    })?;
+    crate::data::transient_0::encode_generic_native(&value.b, writer, shared_values, |value, writer, shared_values| {
+        match value {
+            ::std::option::Option::Some(value) => {
+                crate::transient_0::encode_bool(&true, writer, shared_values)?;
+                crate::transient_0::encode_string(&value, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                crate::transient_0::encode_bool(&false, writer, shared_values)?;
+            },
+        };
+        ::std::io::Result::Ok(())
+    }, |value, writer, shared_values| {
+        crate::data::transient_0::encode_generic_native(value, writer, shared_values, |value, writer, shared_values| {
+            match value {
+                ::std::option::Option::Some(value) => {
+                    crate::transient_0::encode_bool(&true, writer, shared_values)?;
+                    crate::transient_0::encode_string(&value, writer, shared_values)?;
+                },
+                ::std::option::Option::None => {
+                    crate::transient_0::encode_bool(&false, writer, shared_values)?;
+                },
+            };
+            ::std::io::Result::Ok(())
+        }, |value, writer, shared_values| {
+            crate::data::transient_0::encode_generic_native(value, writer, shared_values, |value, writer, shared_values| {
+                crate::transient_0::encode_string(value, writer, shared_values)?;
+                ::std::io::Result::Ok(())
+            }, |value, writer, shared_values| {
+                crate::transient_0::encode_string(value, writer, shared_values)?;
+                ::std::io::Result::Ok(())
+            })?;
+            ::std::io::Result::Ok(())
+        })?;
+        ::std::io::Result::Ok(())
+    })?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_generic_native(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::StructWithGenericNative> {
+    let a = crate::data::transient_0::decode_generic_native(reader, shared_values, |reader, shared_values| ::std::io::Result::Ok(crate::transient_0::decode_int_32(reader, shared_values)?), |reader, shared_values| ::std::io::Result::Ok(crate::transient_0::decode_string(reader, shared_values)?))?;
+    let b = crate::data::transient_0::decode_generic_native(reader, shared_values, |reader, shared_values| ::std::io::Result::Ok({
+        let is_some = crate::transient_0::decode_bool(reader, shared_values)?;
+        if is_some {
+            ::std::option::Option::Some(crate::transient_0::decode_string(reader, shared_values)?)
+        } else {
+            ::std::option::Option::None
+        }
+    }), |reader, shared_values| ::std::io::Result::Ok(crate::data::transient_0::decode_generic_native(reader, shared_values, |reader, shared_values| ::std::io::Result::Ok({
+        let is_some = crate::transient_0::decode_bool(reader, shared_values)?;
+        if is_some {
+            ::std::option::Option::Some(crate::transient_0::decode_string(reader, shared_values)?)
+        } else {
+            ::std::option::Option::None
+        }
+    }), |reader, shared_values| ::std::io::Result::Ok(crate::data::transient_0::decode_generic_native(reader, shared_values, |reader, shared_values| ::std::io::Result::Ok(crate::transient_0::decode_string(reader, shared_values)?), |reader, shared_values| ::std::io::Result::Ok(crate::transient_0::decode_string(reader, shared_values)?))?))?))?;
+    ::std::io::Result::Ok(crate::data::StructWithGenericNative { a: a, b: b })
+}
+
+pub fn encode_struct_with_box(value: &crate::data::StructWithBox, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    crate::data::transient_0::encode_struct_with_int_32((&value.inner).as_ref(), writer, shared_values)?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_box(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::StructWithBox> {
+    let inner = ::std::boxed::Box::new(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?);
+    ::std::io::Result::Ok(crate::data::StructWithBox { inner: inner })
+}
+
+pub fn encode_struct_with_list_of_shared(value: &crate::data::StructWithListOfShared, 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_int_64(&(((&value.inner).len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?, writer, shared_values)?;
+        for element in &value.inner {
+            {
+                let ptr = ::std::sync::Arc::as_ptr(&element) as ::core::primitive::usize;
+                match (shared_values.get(&ptr)).copied() {
+                    ::std::option::Option::Some(id) => {
+                        crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                    },
+                    ::std::option::Option::None => {
+                        let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                        crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                        shared_values.insert(ptr, id);
+                        crate::data::transient_0::encode_struct_with_int_32(element.as_ref(), writer, shared_values)?;
+                    },
+                };
+            };
+        };
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_list_of_shared(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::StructWithListOfShared> {
+    let inner = {
+        let len = crate::transient_0::decode_int_64(reader, shared_values)?;
+        let mut elements = ::std::vec::Vec::with_capacity((len.try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?);
+        for _ in 0..len {
+            elements.push({
+                let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+                if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+                    ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+                } else {
+                    let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?);
+                    shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+                    decoded_value
+                }
+            });
+        };
+        elements
+    };
+    ::std::io::Result::Ok(crate::data::StructWithListOfShared { inner: inner })
+}
+
+pub fn encode_struct_with_different_shared_types(value: &crate::data::StructWithDifferentSharedTypes, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    {
+        let ptr = ::std::sync::Arc::as_ptr(&&value.a) as ::core::primitive::usize;
+        match (shared_values.get(&ptr)).copied() {
+            ::std::option::Option::Some(id) => {
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                shared_values.insert(ptr, id);
+                crate::data::transient_0::encode_struct_with_int_32((&value.a).as_ref(), writer, shared_values)?;
+            },
+        };
+    };
+    {
+        let ptr = ::std::sync::Arc::as_ptr(&&value.b) as ::core::primitive::usize;
+        match (shared_values.get(&ptr)).copied() {
+            ::std::option::Option::Some(id) => {
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                shared_values.insert(ptr, id);
+                crate::data::transient_0::encode_struct_with_int_64((&value.b).as_ref(), writer, shared_values)?;
+            },
+        };
+    };
+    {
+        let ptr = ::std::sync::Arc::as_ptr(&&value.c) as ::core::primitive::usize;
+        match (shared_values.get(&ptr)).copied() {
+            ::std::option::Option::Some(id) => {
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                shared_values.insert(ptr, id);
+                crate::data::transient_0::encode_struct_with_int_32((&value.c).as_ref(), writer, shared_values)?;
+            },
+        };
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_different_shared_types(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::StructWithDifferentSharedTypes> {
+    let a = {
+        let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+        if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+            ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+        } else {
+            let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?);
+            shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+            decoded_value
+        }
+    };
+    let b = {
+        let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+        if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+            ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+        } else {
+            let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_struct_with_int_64(reader, shared_values)?);
+            shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+            decoded_value
+        }
+    };
+    let c = {
+        let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+        if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+            ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+        } else {
+            let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_struct_with_int_32(reader, shared_values)?);
+            shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+            decoded_value
+        }
+    };
+    ::std::io::Result::Ok(crate::data::StructWithDifferentSharedTypes { a: a, b: b, c: c })
+}
+
+pub fn encode_struct_with_shared_sum_and_variant(value: &crate::data::StructWithSharedSumAndVariant, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    {
+        let ptr = ::std::sync::Arc::as_ptr(&&value.a) as ::core::primitive::usize;
+        match (shared_values.get(&ptr)).copied() {
+            ::std::option::Option::Some(id) => {
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                shared_values.insert(ptr, id);
+                crate::data::transient_0::encode_sum_with_variants((&value.a).as_ref(), writer, shared_values)?;
+            },
+        };
+    };
+    {
+        let ptr = ::std::sync::Arc::as_ptr(&&value.b) as ::core::primitive::usize;
+        match (shared_values.get(&ptr)).copied() {
+            ::std::option::Option::Some(id) => {
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+            },
+            ::std::option::Option::None => {
+                let id = ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?;
+                crate::transient_0::encode_int_64(&id, writer, shared_values)?;
+                shared_values.insert(ptr, id);
+                crate::data::transient_0::encode_variant_one((&value.b).as_ref(), writer, shared_values)?;
+            },
+        };
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_struct_with_shared_sum_and_variant(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::StructWithSharedSumAndVariant> {
+    let a = {
+        let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+        if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+            ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+        } else {
+            let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_sum_with_variants(reader, shared_values)?);
+            shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+            decoded_value
+        }
+    };
+    let b = {
+        let id = crate::transient_0::decode_int_64(reader, shared_values)?;
+        if id < ((shared_values.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))? {
+            ((::std::sync::Arc::clone(&shared_values[(::core::primitive::usize::try_from(id)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?])).downcast()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, "referenced value has wrong type"))?
+        } else {
+            let decoded_value = ::std::sync::Arc::new(crate::data::transient_0::decode_variant_one(reader, shared_values)?);
+            shared_values.push(::std::sync::Arc::clone(&decoded_value) as ::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>);
+            decoded_value
+        }
+    };
+    ::std::io::Result::Ok(crate::data::StructWithSharedSumAndVariant { a: a, b: b })
+}
diff --git a/examples/16-transient-0/output/rust/src/gen/transient_0.rs b/examples/16-transient-0/output/rust/src/gen/transient_0.rs
new file mode 100644
index 0000000..b65ab95
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/gen/transient_0.rs
@@ -0,0 +1,88 @@
+// Generated by hobgoblin.
+
+pub type Encode<T, TWrite: ::std::io::Write> = fn(&T, &mut TWrite, &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()>;
+
+pub type Decode<TRead: ::std::io::Read, T> = fn(&mut TRead, &mut ::std::vec::Vec::<::std::sync::Arc::<dyn ::std::any::Any + ::std::marker::Sync + ::std::marker::Send>>) -> ::std::io::Result::<T>;
+
+pub fn encode_bool(value: &::core::primitive::bool, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    if *value {
+        writer.write_all(&1u8.to_le_bytes())?;
+    } else {
+        writer.write_all(&0u8.to_le_bytes())?;
+    };
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_bool(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::<::core::primitive::bool> {
+    let int_value = {
+        let bytes = {
+            let mut bytes = [0; 1];
+            reader.read_exact(&mut bytes)?;
+            bytes
+        };
+        u8::from_le_bytes(bytes)
+    };
+    ::std::io::Result::Ok(if int_value == 0 {
+        false
+    } else {
+        true
+    })
+}
+
+pub fn encode_int_8(value: &::core::primitive::i8, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    writer.write_all(&value.to_le_bytes())?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_int_8(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::<::core::primitive::i8> {
+    let bytes = {
+        let mut bytes = [0; 1];
+        reader.read_exact(&mut bytes)?;
+        bytes
+    };
+    ::std::io::Result::Ok(::core::primitive::i8::from_le_bytes(bytes))
+}
+
+pub fn encode_int_32(value: &::core::primitive::i32, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    writer.write_all(&value.to_le_bytes())?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_int_32(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::<::core::primitive::i32> {
+    let bytes = {
+        let mut bytes = [0; 4];
+        reader.read_exact(&mut bytes)?;
+        bytes
+    };
+    ::std::io::Result::Ok(::core::primitive::i32::from_le_bytes(bytes))
+}
+
+pub fn encode_int_64(value: &::core::primitive::i64, writer: &mut impl std::io::Write, shared_values: &mut ::std::collections::HashMap::<::core::primitive::usize, ::core::primitive::i64>) -> ::std::io::Result::<()> {
+    writer.write_all(&value.to_le_bytes())?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_int_64(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::<::core::primitive::i64> {
+    let bytes = {
+        let mut bytes = [0; 8];
+        reader.read_exact(&mut bytes)?;
+        bytes
+    };
+    ::std::io::Result::Ok(::core::primitive::i64::from_le_bytes(bytes))
+}
+
+pub fn encode_string(value: &::std::string::String, 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_int_64(&((value.len()).try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?, writer, shared_values)?;
+    writer.write_all(value.as_bytes())?;
+    ::std::io::Result::Ok(())
+}
+
+pub fn decode_string(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::<::std::string::String> {
+    let len = crate::transient_0::decode_int_64(reader, shared_values)?;
+    let bytes = {
+        let mut bytes = vec![0u8; (len.try_into()).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?];
+        reader.read_exact(&mut bytes)?;
+        bytes
+    };
+    ::std::io::Result::Ok((::std::string::String::from_utf8(bytes)).map_err(|error| ::std::io::Error::new(::std::io::ErrorKind::InvalidData, error))?)
+}
diff --git a/examples/16-transient-0/output/rust/src/lib.rs b/examples/16-transient-0/output/rust/src/lib.rs
new file mode 100644
index 0000000..a51afff
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/lib.rs
@@ -0,0 +1,353 @@
+pub mod data;
+pub mod transient_0;
+
+#[cfg(test)]
+mod test {
+    use std::any::Any;
+    use std::io::Cursor;
+    use std::path::PathBuf;
+    use std::sync::Arc;
+    use std::collections::HashMap;
+    use super::data::{EnumWithVariants, GenericNative, Native, StructSingleton, StructWithBool, StructWithBox, StructWithDifferentSharedTypes, StructWithEnum, StructWithGenericNative, StructWithInt8, StructWithInt32, StructWithInt64, StructWithList, StructWithListOfShared, StructWithNative, StructWithOption, StructWithSharedSumAndVariant, StructWithString, StructWithStruct, StructWithSum, SumWithBoxedVariants, 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() {
+        let value = StructWithBool { a: true, b: false };
+
+        assert_round_trip_encoding(
+            "StructWithBool",
+            value,
+            super::data::transient_0::encode_struct_with_bool,
+            super::data::transient_0::decode_struct_with_bool,
+        );
+    }
+
+    #[test]
+    fn struct_with_int_8() {
+        let value = StructWithInt8 { a: 10, b: 25 };
+
+        assert_round_trip_encoding(
+            "StructWithInt8",
+            value,
+            super::data::transient_0::encode_struct_with_int_8,
+            super::data::transient_0::decode_struct_with_int_8,
+        );
+    }
+
+    #[test]
+    fn struct_with_int_32() {
+        let value = StructWithInt32 { a: 10, b: 25 };
+
+        assert_round_trip_encoding(
+            "StructWithInt32",
+            value,
+            super::data::transient_0::encode_struct_with_int_32,
+            super::data::transient_0::decode_struct_with_int_32,
+        );
+    }
+
+    #[test]
+    fn struct_with_int_64() {
+        let value = StructWithInt64 { a: 10, b: 25 };
+
+        assert_round_trip_encoding(
+            "StructWithInt64",
+            value,
+            super::data::transient_0::encode_struct_with_int_64,
+            super::data::transient_0::decode_struct_with_int_64,
+        );
+    }
+
+    #[test]
+    fn struct_with_string() {
+        let value = StructWithString { a: "abc".to_string(), b: "def".to_string() };
+
+        assert_round_trip_encoding(
+            "StructWithString",
+            value,
+            super::data::transient_0::encode_struct_with_string,
+            super::data::transient_0::decode_struct_with_string,
+        );
+    }
+
+    #[test]
+    fn struct_with_struct() {
+        let value = StructWithStruct { inner: StructWithInt32 { a: 10, b: 25 }, c: 42 };
+
+        assert_round_trip_encoding(
+            "StructWithStruct",
+            value,
+            super::data::transient_0::encode_struct_with_struct,
+            super::data::transient_0::decode_struct_with_struct,
+        );
+    }
+
+    #[test]
+    fn struct_with_list() {
+        let value = StructWithList {
+            a: vec![10, 25],
+            b: vec![
+                StructWithInt32 { a: 42, b: 47 },
+                StructWithInt32 { a: 52, b: 57 },
+                StructWithInt32 { a: 62, b: 67 },
+            ],
+        };
+
+        assert_round_trip_encoding(
+            "StructWithList",
+            value,
+            super::data::transient_0::encode_struct_with_list,
+            super::data::transient_0::decode_struct_with_list,
+        );
+    }
+
+    #[test]
+    fn struct_with_option_none() {
+        let value = StructWithOption {
+            a: None,
+            b: None,
+        };
+
+        assert_round_trip_encoding(
+            "StructWithOption_None",
+            value,
+            super::data::transient_0::encode_struct_with_option,
+            super::data::transient_0::decode_struct_with_option,
+        );
+    }
+
+    #[test]
+    fn struct_with_option_some() {
+        let value = StructWithOption {
+            a: Some(10),
+            b: Some(StructWithInt32 { a: 42, b: 47 }),
+        };
+
+        assert_round_trip_encoding(
+            "StructWithOption_Some",
+            value,
+            super::data::transient_0::encode_struct_with_option,
+            super::data::transient_0::decode_struct_with_option,
+        );
+    }
+
+    #[test]
+    fn enum_with_variants() {
+        assert_round_trip_encoding(
+            "EnumWithVariants_zero",
+            EnumWithVariants::Zero,
+            super::data::transient_0::encode_enum_with_variants,
+            super::data::transient_0::decode_enum_with_variants,
+        );
+
+        assert_round_trip_encoding(
+            "EnumWithVariants_one",
+            EnumWithVariants::One,
+            super::data::transient_0::encode_enum_with_variants,
+            super::data::transient_0::decode_enum_with_variants,
+        );
+
+        assert_round_trip_encoding(
+            "EnumWithVariants_two",
+            EnumWithVariants::Two,
+            super::data::transient_0::encode_enum_with_variants,
+            super::data::transient_0::decode_enum_with_variants,
+        );
+    }
+
+    #[test]
+    fn struct_with_enum() {
+        let value = StructWithEnum { inner: EnumWithVariants::One, c: 42 };
+
+        assert_round_trip_encoding(
+            "StructWithEnum",
+            value,
+            super::data::transient_0::encode_struct_with_enum,
+            super::data::transient_0::decode_struct_with_enum,
+        );
+    }
+
+    #[test]
+    fn sum_with_variants() {
+        assert_round_trip_encoding(
+            "SumWithVariants_VariantOne",
+            SumWithVariants::VariantOne(VariantOne { a: 10 }),
+            super::data::transient_0::encode_sum_with_variants,
+            super::data::transient_0::decode_sum_with_variants,
+        );
+
+        assert_round_trip_encoding(
+            "SumWithVariants_VariantTwo",
+            SumWithVariants::VariantTwo(VariantTwo { a: 25 }),
+            super::data::transient_0::encode_sum_with_variants,
+            super::data::transient_0::decode_sum_with_variants,
+        );
+    }
+
+    #[test]
+    fn sum_with_boxed_variants() {
+        assert_round_trip_encoding(
+            "SumWithBoxedVariants_VariantOne",
+            SumWithBoxedVariants::VariantOne(Box::new(VariantOne { a: 10 })),
+            super::data::transient_0::encode_sum_with_boxed_variants,
+            super::data::transient_0::decode_sum_with_boxed_variants,
+        );
+
+        assert_round_trip_encoding(
+            "SumWithBoxedVariants_VariantTwo",
+            SumWithBoxedVariants::VariantTwo(Box::new(VariantTwo { a: 25 })),
+            super::data::transient_0::encode_sum_with_boxed_variants,
+            super::data::transient_0::decode_sum_with_boxed_variants,
+        );
+    }
+
+    #[test]
+    fn struct_with_sum() {
+        let value = StructWithSum {
+            inner: SumWithVariants::VariantTwo(VariantTwo { a: 25 }),
+            b: 42,
+        };
+
+        assert_round_trip_encoding(
+            "StructWithSum",
+            value,
+            super::data::transient_0::encode_struct_with_sum,
+            super::data::transient_0::decode_struct_with_sum,
+        );
+    }
+
+    #[test]
+    fn struct_with_native() {
+        let value = StructWithNative {
+            a: Native { a: 10, b: 25 },
+        };
+
+        assert_round_trip_encoding(
+            "StructWithNative",
+            value,
+            super::data::transient_0::encode_struct_with_native,
+            super::data::transient_0::decode_struct_with_native,
+        );
+    }
+
+    #[test]
+    fn struct_with_generic_native() {
+        let value = StructWithGenericNative {
+            a: GenericNative { a: 10, b: "x1".to_string() },
+            b: GenericNative {
+                a: Some("x2".to_string()),
+                b: GenericNative {
+                    a: Some("x3".to_string()),
+                    b: GenericNative { a: "x4".to_string(), b: "x5".to_string() },
+                },
+            },
+        };
+
+        assert_round_trip_encoding(
+            "StructWithGenericNative",
+            value,
+            super::data::transient_0::encode_struct_with_generic_native,
+            super::data::transient_0::decode_struct_with_generic_native,
+        );
+    }
+
+    #[test]
+    fn struct_with_box() {
+        let value = StructWithBox {
+            inner: Box::new(StructWithInt32 { a: 10, b: 25 }),
+        };
+
+        assert_round_trip_encoding(
+            "StructWithBox",
+            value,
+            super::data::transient_0::encode_struct_with_box,
+            super::data::transient_0::decode_struct_with_box,
+        );
+    }
+
+    #[test]
+    fn struct_with_list_of_shared() {
+        let a = Arc::new(StructWithInt32 { a: 10, b: 25 });
+        let b = Arc::new(StructWithInt32 { a: 42, b: 47 });
+
+        let value = StructWithListOfShared {
+            inner: vec![Arc::clone(&a), Arc::clone(&a), Arc::clone(&b), a, b],
+        };
+
+        let decoded_value = assert_round_trip_encoding(
+            "StructWithListOfShared",
+            value,
+            super::data::transient_0::encode_struct_with_list_of_shared,
+            super::data::transient_0::decode_struct_with_list_of_shared,
+        );
+        assert!(Arc::ptr_eq(&decoded_value.inner[0], &decoded_value.inner[1]));
+        assert!(Arc::ptr_eq(&decoded_value.inner[0], &decoded_value.inner[3]));
+        assert!(Arc::ptr_eq(&decoded_value.inner[2], &decoded_value.inner[4]));
+    }
+
+    #[test]
+    fn struct_with_different_shared_types() {
+        let a = Arc::new(StructWithInt32 { a: 10, b: 25 });
+        let b = Arc::new(StructWithInt64 { a: 42, b: 47 });
+        let c = Arc::new(StructWithInt32 { a: 52, b: 57 });
+
+        let value = StructWithDifferentSharedTypes { a, b, c };
+
+        assert_round_trip_encoding(
+            "StructWithDifferentSharedTypes",
+            value,
+            super::data::transient_0::encode_struct_with_different_shared_types,
+            super::data::transient_0::decode_struct_with_different_shared_types,
+        );
+    }
+
+    #[test]
+    fn struct_with_shared_sum_and_variant() {
+        let a = Arc::new(SumWithVariants::VariantOne(VariantOne { a: 10 }));
+        let b = Arc::new(VariantOne { a: 10 });
+
+        let value = StructWithSharedSumAndVariant { a, b };
+
+        assert_round_trip_encoding(
+            "StructWithSharedSumAndVariant",
+            value,
+            super::data::transient_0::encode_struct_with_shared_sum_and_variant,
+            super::data::transient_0::decode_struct_with_shared_sum_and_variant,
+        );
+    }
+
+    fn assert_round_trip_encoding<T: std::cmp::PartialEq + std::fmt::Debug>(
+        name: &str,
+        value: T,
+        encode: impl Fn(&T, &mut Cursor<Vec<u8>>, &mut HashMap<usize, i64>) -> std::io::Result<()>,
+        decode: impl Fn(&mut Cursor<Vec<u8>>, &mut Vec<Arc<dyn Any + Sync + Send>>) -> std::io::Result<T>,
+    ) -> T {
+        let mut bytes = Cursor::new(Vec::new());
+        encode(&value, &mut bytes, &mut HashMap::new()).unwrap();
+
+        let output_dir = std::env::var("HOBGOBLIN_OUTPUT_DIR").unwrap();
+        let transient_0_output_dir = PathBuf::from(output_dir).join("transient-0");
+        std::fs::create_dir_all(&transient_0_output_dir).unwrap();
+        let transient_0_output_path = transient_0_output_dir.join(name);
+        std::fs::write(transient_0_output_path, bytes.get_ref()).unwrap();
+
+        bytes.set_position(0);
+        let decoded_value = decode(&mut bytes, &mut Vec::new()).unwrap();
+
+        assert_eq!(value, decoded_value);
+
+        decoded_value
+    }
+}
diff --git a/examples/16-transient-0/output/rust/src/transient_0.rs b/examples/16-transient-0/output/rust/src/transient_0.rs
new file mode 100644
index 0000000..8b2b800
--- /dev/null
+++ b/examples/16-transient-0/output/rust/src/transient_0.rs
@@ -0,0 +1 @@
+include!("./gen/transient_0.rs");