From 47c8f99b6ef812dbc22ca56a39ba21bccad47796 Mon Sep 17 00:00:00 2001
From: Eugen Wissner <belka@caraus.de>
Date: Tue, 8 Sep 2026 20:43:39 +0200
Subject: Implement generic pointers

---
 testsuite/compilable/generic_alias.elna      | 31 ++++++++++++++++++++++++++
 testsuite/compilable/generic_arguments.elna  | 28 +++++++++++++++++++++++
 testsuite/compilable/generic_base_chain.elna | 31 ++++++++++++++++++++++++++
 testsuite/compilable/generic_inference.elna  | 33 ++++++++++++++++++++++++++++
 4 files changed, 123 insertions(+)
 create mode 100644 testsuite/compilable/generic_alias.elna
 create mode 100644 testsuite/compilable/generic_arguments.elna
 create mode 100644 testsuite/compilable/generic_base_chain.elna
 create mode 100644 testsuite/compilable/generic_inference.elna

(limited to 'testsuite/compilable')

diff --git a/testsuite/compilable/generic_alias.elna b/testsuite/compilable/generic_alias.elna
new file mode 100644
index 0000000..3b431be
--- /dev/null
+++ b/testsuite/compilable/generic_alias.elna
@@ -0,0 +1,31 @@
+type
+  File = record
+    fd: Int
+  end
+
+  Node#[T] = record
+    next: ^Node#[T];
+    value: T
+  end
+
+  Ref#[T] = ^T
+
+  Boxed#[V] = record
+    inner: ^Node#[V]
+  end
+
+var
+  chain: Node#[^File]
+  aliased: Ref#[^File]
+  raw: ^^File
+  boxed: Boxed#[^File]
+
+program()
+begin
+  chain.next := nil;
+  aliased := raw;
+  raw := aliased;
+  boxed.inner := @chain
+return 0u8
+
+end.
diff --git a/testsuite/compilable/generic_arguments.elna b/testsuite/compilable/generic_arguments.elna
new file mode 100644
index 0000000..6bc5242
--- /dev/null
+++ b/testsuite/compilable/generic_arguments.elna
@@ -0,0 +1,28 @@
+type
+  File = record
+    fd: Int
+  end
+
+  Pair#[K, V] = record
+    key: K;
+    value: V
+  end
+
+var
+  entry: Pair#[^File, ^Word8]
+
+proc allocate#[T](size: Word) -> T extern
+
+proc first#[K, V](entry_ptr: ^Pair#[K, V]) -> K
+begin
+return entry_ptr^.key
+
+program()
+begin
+  entry.key := allocate#[^File](#size(File));
+  assert(#size(Pair#[^File, ^Word8]) = #size(Pointer) * 2u);
+  assert(#offset(Pair#[^File, ^Word8], value) = #size(Pointer));
+  assert(first#[^File, ^Word8](@entry) = entry.key)
+return 0u8
+
+end.
diff --git a/testsuite/compilable/generic_base_chain.elna b/testsuite/compilable/generic_base_chain.elna
new file mode 100644
index 0000000..736042b
--- /dev/null
+++ b/testsuite/compilable/generic_base_chain.elna
@@ -0,0 +1,31 @@
+type
+  File = record
+    fd: Int
+  end
+
+  Map#[K, V] = record
+    key: K;
+    value: V
+  end
+
+  Cache#[K, V] = record(Map#[^Word8, V])
+    newest: K
+  end
+
+var
+  store: Cache#[^Int, ^File]
+  byte_key: ^Word8
+  upcast: ^Map#[^Word8, ^File]
+
+proc put#[K2, V2](target: ^Map#[K2, V2]; key: K2)
+begin
+  target^.key := key
+return
+
+program()
+begin
+  upcast := @store;
+  put(@store, byte_key)
+return 0u8
+
+end.
diff --git a/testsuite/compilable/generic_inference.elna b/testsuite/compilable/generic_inference.elna
new file mode 100644
index 0000000..25faca4
--- /dev/null
+++ b/testsuite/compilable/generic_inference.elna
@@ -0,0 +1,33 @@
+type
+  File = record
+    fd: Int
+  end
+
+  Cell#[T] = record
+    held: T
+  end
+
+var
+  files: Cell#[^File]
+  bytes: Cell#[^Word8]
+  f: File
+  b: Word8
+
+proc store#[T](target: ^Cell#[T]; value: T)
+begin
+  target^.held := value
+return
+
+proc relay#[T](target: ^Cell#[T]; value: T)
+begin
+  store(target, value)
+return
+
+program()
+begin
+  store(@files, @f);
+  relay(@bytes, @b);
+  store(@files, nil)
+return 0u8
+
+end.
-- 
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