From 578531395ecbabd8179e31520c2832ac7d6d3765 Mon Sep 17 00:00:00 2001
From: Matthew Sotoudeh <matthew@masot.net>
Date: Thu, 27 Jul 2023 12:06:17 -0700
Subject: add dynamic typing example

---
 .../dynamic_typing/runtime/dynamic_typing.h        | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 python/examples/dynamic_typing/runtime/dynamic_typing.h

(limited to 'python/examples/dynamic_typing/runtime/dynamic_typing.h')

diff --git a/python/examples/dynamic_typing/runtime/dynamic_typing.h b/python/examples/dynamic_typing/runtime/dynamic_typing.h
new file mode 100644
index 0000000..4f7b1aa
--- /dev/null
+++ b/python/examples/dynamic_typing/runtime/dynamic_typing.h
@@ -0,0 +1,48 @@
+#ifndef DYNAMIC_TYPING_
+#define DYNAMIC_TYPING_
+
+enum TYPE_KIND {
+    TY_BASIC,
+    TY_ARRAY,
+    TY_POINTER,
+    TY_FUNCTION,
+    TY_STRUCT,
+    TY_UNION,
+};
+
+struct type {
+    enum TYPE_KIND kind;
+    unsigned long size;
+
+    // basic types:
+    const char *basic;
+
+    // array & pointer types:
+    struct type *base;
+    unsigned long length;
+
+    // struct & union types
+    struct type *members;
+    struct type *next_member;
+    unsigned long offset;
+    const char *field_name;
+
+    // function types:
+    struct type *return_type;
+    struct type *params;
+    struct type *next_param;
+};
+
+struct type *dynamic_typeof(void *ptr);
+
+struct type *make_basic(const char *type, unsigned long size);
+struct type *make_array(struct type *base, unsigned long len);
+struct type *make_pointer(struct type *base);
+// function not supported yet
+// for struct & union, the members are initialized by the caller
+struct type *make_struct(unsigned long size);
+struct type *make_union(unsigned long size);
+void prepend_member(struct type *aggregate, struct type *member, const char *name, unsigned long offset);
+void annotate_type(void *ptr, struct type *type);
+
+#endif
-- 
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