4 files changed, 37 insertions, 15 deletions
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttransient0/RustTransient0Generator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttransient0/RustTransient0Generator.java
index 421366f..78f2e91 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttransient0/RustTransient0Generator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttransient0/RustTransient0Generator.java
@@ -571,6 +571,7 @@ public class RustTransient0Generator implements Generator {
         return new RustFunction(
             Optional.of(RustVisibility.PUB),
             encodeMethodName(type),
+            List.of(),
             generateEncodeParams(rustType),
             Optional.of(
                 RustTypes.ioResult(RustTypes.UNIT)
@@ -610,6 +611,7 @@ public class RustTransient0Generator implements Generator {
         return new RustFunction(
             Optional.of(RustVisibility.PUB),
             decodeMethodName(type),
+            List.of(),
             generateDecodeParams(),
             Optional.of(RustTypes.ioResult(rustType)),
             Optional.of(new RustBlockExpression(
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttypes/RustTypesGenerator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttypes/RustTypesGenerator.java
index a5c2118..4df01d1 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttypes/RustTypesGenerator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/rusttypes/RustTypesGenerator.java
@@ -221,6 +221,7 @@ public class RustTypesGenerator implements Generator {
                     new RustFunction(
                         Optional.empty(),
                         new RustIdentifier("from"),
+                        List.of(),
                         List.of(new RustFunctionParam(innerValueName, fromRustType)),
                         Optional.of(RustPath.selfType()),
                         Optional.of(new RustBlockExpression(
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
index da534b2..df8aa8c 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/RustWriter.java
@@ -103,6 +103,7 @@ public class RustWriter implements AutoCloseable {
 
         this.writer.write("fn ");
         this.writeIdentifier(function.name());
+        this.writeTypeParams(function.typeParams());
         this.writer.write("(");
 
         writeWithSeparator(
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustFunction.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustFunction.java
index 438dfa8..d5ebb38 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustFunction.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/rust/ast/RustFunction.java
@@ -8,79 +8,97 @@ package org.zwobble.hobgoblin.compiler.output.lang.rust.ast;
 public record RustFunction(
     java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustVisibility> visibility,
     org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier name,
+    java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam> typeParams,
     java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam> params,
     java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustType> returnType,
     java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBlockExpression> body
 ) implements org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustItem, org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustAssociatedItem {
     public static org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder arbitrary() {
-        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(java.util.Optional.empty(), org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier.arbitrary().build(), java.util.List.of(), java.util.Optional.empty(), java.util.Optional.empty());
+        return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(java.util.Optional.empty(), org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier.arbitrary().build(), java.util.List.of(), java.util.List.of(), java.util.Optional.empty(), java.util.Optional.empty());
     }
 
     public record Builder(
         java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustVisibility> visibility,
         org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier name,
+        java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam> typeParams,
         java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam> params,
         java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustType> returnType,
         java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBlockExpression> body
     ) implements org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustItem.Builder, org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustAssociatedItem.Builder {
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction build() {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withVisibility(java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustVisibility> visibility) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withVisibility(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustVisibility visibility) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(java.util.Optional.of(visibility), name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(java.util.Optional.of(visibility), name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withName(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier name) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withName(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustIdentifier.Builder name) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name.build(), params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name.build(), typeParams, params, returnType, body);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withTypeParams(java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam> typeParams) {
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder addTypeParam(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam typeParam) {
+            var typeParams = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam>(this.typeParams);
+            typeParams.add(typeParam);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
+        }
+
+        public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder addTypeParam(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam.Builder typeParam) {
+            var typeParams = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustTypeParam>(this.typeParams);
+            typeParams.add(typeParam.build());
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withParams(java.util.List<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam> params) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder addParam(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam param) {
             var params = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam>(this.params);
             params.add(param);
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder addParam(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam.Builder param) {
             var params = new java.util.ArrayList<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunctionParam>(this.params);
             params.add(param.build());
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withReturnType(java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustType> returnType) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withReturnType(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustType returnType) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, java.util.Optional.of(returnType), body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, java.util.Optional.of(returnType), body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withReturnType(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustType.Builder returnType) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, java.util.Optional.of(returnType.build()), body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, java.util.Optional.of(returnType.build()), body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withBody(java.util.Optional<org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBlockExpression> body) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, body);
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, body);
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withBody(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBlockExpression body) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, java.util.Optional.of(body));
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, java.util.Optional.of(body));
         }
 
         public org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder withBody(org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustBlockExpression.Builder body) {
-            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, params, returnType, java.util.Optional.of(body.build()));
+            return new org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder(visibility, name, typeParams, params, returnType, java.util.Optional.of(body.build()));
         }
 
         // Custom area start: org.zwobble.hobgoblin.compiler.output.lang.rust.ast.RustFunction.Builder body