fix self

Author: aceinetx

zenlang/src/vm/opcodes/vm_call.rs

@@ -2,6 +2,7 @@ use crate::strong_u64::U64BitsControl;
 use crate::value::*;
 use crate::vm::VM;
 use alloc::format;
+use alloc::string::*;
 
 impl VM {
     pub fn op_call(&mut self) {
@@ -15,6 +16,12 @@ impl VM {
 
                     self.push_environment();
 
+                    let this_name = &String::from("self");
+                    let environ = self.environs.last_mut().unwrap();
+                    let environ = &mut *environ.borrow_mut();
+                    environ.create_if_doesnt_exist(this_name);
+                    *environ.get_mut(this_name).unwrap() = core::mem::take(&mut self.self_var);
+
                     let start = self.bfas_stack_start.pop().unwrap();
                     let end = self.bfas_stack_end.pop().unwrap();
                     let diff = end - start;
@@ -35,6 +42,12 @@ impl VM {
 
                     self.environs.push(env);
 
+                    let this_name = &String::from("self");
+                    let environ = self.environs.last_mut().unwrap();
+                    let environ = &mut *environ.borrow_mut();
+                    environ.create_if_doesnt_exist(this_name);
+                    *environ.get_mut(this_name).unwrap() = core::mem::take(&mut self.self_var);
+
                     let start = self.bfas_stack_start.pop().unwrap();
                     let end = self.bfas_stack_end.pop().unwrap();
                     let diff = end - start;