Add LLVM function type

4 files changed, 27 insertions, 1 deletions

diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
index 9bceaf45..b78ed21e 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/LlvmIrSerializer.java
@@ -191,6 +191,16 @@ public class LlvmIrSerializer {
                 serializeType(pointer.elementType(), builder);
                 builder.append(" *");
             }
+            case LlvmTypeFunction function -> {
+                serializeType(function.returnType(), builder);
+                builder.append(" (");
+                forEachInterspersed(
+                    function.paramTypes(),
+                    paramType -> serializeType(paramType, builder),
+                    () -> builder.append(", ")
+                );
+                builder.append(")");
+            }
         }
     }
 
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmType.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmType.java
index dec3db7e..16e33790 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmType.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmType.java
@@ -1,4 +1,4 @@
 package org.shedlang.compiler.backends.llvm.ir.ast.types;
 
-public sealed interface LlvmType permits LlvmTypeArray, LlvmTypePointer, LlvmTypeScalar, LlvmTypeStructure {
+public sealed interface LlvmType permits LlvmTypeArray, LlvmTypeFunction, LlvmTypePointer, LlvmTypeScalar, LlvmTypeStructure {
 }
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypeFunction.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypeFunction.java
new file mode 100644
index 00000000..c6c3bfba
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypeFunction.java
@@ -0,0 +1,9 @@
+package org.shedlang.compiler.backends.llvm.ir.ast.types;
+
+import java.util.List;
+
+public record LlvmTypeFunction(
+    LlvmType returnType,
+    List<LlvmType> paramTypes
+) implements LlvmType {
+}
diff --git a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypes.java b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypes.java
index b22cda43..e507546a 100644
--- a/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypes.java
+++ b/src/main/java/org/shedlang/compiler/backends/llvm/ir/ast/types/LlvmTypes.java
@@ -15,6 +15,13 @@ public class LlvmTypes {
         return new LlvmTypeArray(size, elementType);
     }
 
+    public static LlvmTypeFunction function(
+        LlvmType returnType,
+        List<LlvmType> paramTypes
+    ) {
+        return new LlvmTypeFunction(returnType, paramTypes);
+    }
+
     public static LlvmTypePointer pointer(LlvmType elementType) {
         return new LlvmTypePointer(elementType);
     }