treewide: refactor internal AST structures

 - unify operand and value tag structures
 - use a contiguous array for storing opcodes
 - use relative offsets for next and children ops
 - defer function creation to runtime
 - rework "this" context handling by storing context pointer in scope tags

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 5 insertions, 1 deletions

diff --git a/lib.h b/lib.h
index 512a558..9471141 100644
--- a/lib.h
+++ b/lib.h
@@ -20,7 +20,11 @@
 #include "ast.h"
 #include "lexer.h"
 
-typedef struct json_object *(ut_c_fn)(struct ut_state *, struct ut_opcode *, struct json_object *);
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+#endif
+
+typedef struct json_object *(ut_c_fn)(struct ut_state *, uint32_t, struct json_object *);
 
 void ut_lib_init(struct ut_state *state, struct json_object *scope);