From 1ab92f34420bba4fa83da4ea518c862cab105273 Mon Sep 17 00:00:00 2001
From: Michael Williamson <mike@zwobble.org>
Date: Sun, 30 Aug 2026 09:50:40 +0100
Subject: Generate fields for structs in typescript-types

---
 .../typescripttypes/TypescriptTypesGenerator.java  | 41 +++++++++++++++++++---
 1 file changed, 36 insertions(+), 5 deletions(-)

(limited to 'src/main/java')

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescripttypes/TypescriptTypesGenerator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescripttypes/TypescriptTypesGenerator.java
index 878824a..c737d1c 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescripttypes/TypescriptTypesGenerator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescripttypes/TypescriptTypesGenerator.java
@@ -6,15 +6,15 @@ import org.zwobble.hobgoblin.compiler.output.generators.Generator;
 import org.zwobble.hobgoblin.compiler.output.generators.GeneratorDefinition;
 import org.zwobble.hobgoblin.compiler.output.generators.typescript.TypescriptGenerator;
 import org.zwobble.hobgoblin.compiler.output.generators.typescript.TypescriptGeneratorConfig;
-import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptClassDeclaration;
-import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptModule;
-import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptStatement;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.*;
 import org.zwobble.hobgoblin.compiler.typechecker.TypesInfo;
 import org.zwobble.json5.reader.Json5ObjectReader;
 
 import java.io.IOException;
 import java.nio.file.Path;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.Optional;
 
 public class TypescriptTypesGenerator implements Generator {
     private static final String NAME = "typescript-types";
@@ -104,9 +104,40 @@ public class TypescriptTypesGenerator implements Generator {
     }
 
     private TypescriptStatement generateStructDefinition(TypedStructDefinitionNode structDefinition) {
+        var typescriptTypeName = this.typescriptGenerator.generateTypeName(structDefinition.name());
+
+        var body = new ArrayList<TypescriptClassElement>();
+
+        for (var field : structDefinition.fields().orElse(List.of())) {
+            body.add(new TypescriptClassFieldDeclaration(
+                this.typescriptGenerator.generateFieldName(field.name()),
+                Optional.of(this.typescriptGenerator.generateTypeExpression(field.type().value())),
+                Optional.empty()
+            ));
+        }
+
+        body.add(new TypescriptClassConstructor(
+            structDefinition.fields().orElse(List.of()).stream()
+                .map(field -> new TypescriptParam(
+                    this.typescriptGenerator.generateFieldName(field.name()),
+                    Optional.of(this.typescriptGenerator.generateTypeExpression(field.type().value()))
+                ))
+                .toList(),
+            structDefinition.fields().orElse(List.of()).stream()
+                .<TypescriptStatement>map(field -> new TypescriptExpressionStatement(new TypescriptBinaryOperation(
+                    TypescriptBinaryOperator.ASSIGN,
+                    new TypescriptFieldAccess(
+                        new TypescriptRef(TypescriptIdentifier.of("this")),
+                        this.typescriptGenerator.generateFieldName(field.name())
+                    ),
+                    new TypescriptRef(this.typescriptGenerator.generateFieldName(field.name()))
+                )))
+                .toList()
+        ));
+
         return new TypescriptClassDeclaration(
-            this.typescriptGenerator.generateTypeName(structDefinition.name()),
-            List.of(),
+            typescriptTypeName,
+            body,
             structDefinition.docComment()
         );
     }
-- 
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