Support generating TypeScript type expressions for simple types

4 files changed, 73 insertions, 2 deletions

diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
index bf14e2e..7092a52 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGenerator.java
@@ -1,8 +1,11 @@
 package org.zwobble.hobgoblin.compiler.output.generators.typescript;
 
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.TypescriptWriter;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptExpression;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier;
 import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptModule;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptRef;
+import org.zwobble.hobgoblin.compiler.types.*;
 
 import java.io.File;
 import java.io.IOException;
@@ -35,4 +38,39 @@ public class TypescriptGenerator {
     public TypescriptIdentifier generateTypeName(String name) {
         return new TypescriptIdentifier(name);
     }
+
+    public TypescriptIdentifier generateFieldName(String name) {
+        return new TypescriptIdentifier(name);
+    }
+
+    public TypescriptExpression generateTypeExpression(Type value) {
+        return switch (value) {
+            case ConstructedNativeType _ -> {
+                throw new UnsupportedOperationException("TODO");
+            }
+
+            case ConstructedStructType _ -> {
+                throw new UnsupportedOperationException("TODO");
+            }
+
+            case SimpleType simpleType -> {
+                if (simpleType instanceof SimpleNativeType simpleNativeType) {
+                    var nativeTypeConfig = this.config.nativeTypeConfig(simpleNativeType);
+                    if (nativeTypeConfig.isPresent()) {
+                        yield nativeTypeConfig.get().typeExpression();
+                    }
+                }
+
+                yield new TypescriptRef(this.generateTypeName(simpleType.name()));
+            }
+
+            case TypeLevelValueType _ -> {
+                throw new UnsupportedOperationException("TODO");
+            }
+
+            case TypeParam _ -> {
+                throw new UnsupportedOperationException("TODO");
+            }
+        };
+    }
 }
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGeneratorConfig.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGeneratorConfig.java
index 6a93eea..f49edda 100644
--- a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGeneratorConfig.java
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptGeneratorConfig.java
@@ -1,11 +1,27 @@
 package org.zwobble.hobgoblin.compiler.output.generators.typescript;
 
+import org.zwobble.hobgoblin.compiler.builtins.NativeTypes;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.TypescriptTypes;
+import org.zwobble.hobgoblin.compiler.types.SimpleNativeType;
 import org.zwobble.json5.reader.Json5ObjectReader;
 
-public record TypescriptGeneratorConfig() {
+import java.util.Map;
+import java.util.Optional;
+
+public record TypescriptGeneratorConfig(
+    Map<SimpleNativeType, TypescriptNativeTypeConfig> nativeTypeConfigs
+) {
     public static TypescriptGeneratorConfig parseLangsConfig(Json5ObjectReader langsJson) {
         var output = langsJson.getObjectOrNone("typescript");
 
-        return new TypescriptGeneratorConfig();
+        return new TypescriptGeneratorConfig(DEFAULT_NATIVE_TYPE_CONFIGS);
+    }
+
+    private static final Map<SimpleNativeType, TypescriptNativeTypeConfig> DEFAULT_NATIVE_TYPE_CONFIGS = Map.ofEntries(
+        Map.entry(NativeTypes.INT_32, new TypescriptNativeTypeConfig(TypescriptTypes.NUMBER))
+    );
+
+    public Optional<TypescriptNativeTypeConfig> nativeTypeConfig(SimpleNativeType type) {
+        return Optional.ofNullable(this.nativeTypeConfigs.get(type));
     }
 }
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptNativeTypeConfig.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptNativeTypeConfig.java
new file mode 100644
index 0000000..35b72f9
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/generators/typescript/TypescriptNativeTypeConfig.java
@@ -0,0 +1,6 @@
+package org.zwobble.hobgoblin.compiler.output.generators.typescript;
+
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptExpression;
+
+public record TypescriptNativeTypeConfig(TypescriptExpression typeExpression) {
+}
diff --git a/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java
new file mode 100644
index 0000000..308a297
--- /dev/null
+++ b/src/main/java/org/zwobble/hobgoblin/compiler/output/lang/typescript/TypescriptTypes.java
@@ -0,0 +1,11 @@
+package org.zwobble.hobgoblin.compiler.output.lang.typescript;
+
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptIdentifier;
+import org.zwobble.hobgoblin.compiler.output.lang.typescript.ast.TypescriptRef;
+
+public class TypescriptTypes {
+    private TypescriptTypes() {
+    }
+
+    public static final TypescriptRef NUMBER = new TypescriptRef(TypescriptIdentifier.of("number"));
+}