Alek Ratzloff
c738c52455
* Methods are wrappers created with an owner and a function, which passes the owner as the first argument when the function is called. * Fix a small bug in the VM where the pc was being set at the wrong time Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
57 lines
1.4 KiB
Rust
57 lines
1.4 KiB
Rust
use crate::obj::{prelude::*, reserved::*};
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use once_cell::sync::Lazy;
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use shredder::Scan;
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use std::fmt::{Debug, Formatter, self};
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pub type IntRef = ObjRef<Int>;
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#[derive(Scan)]
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pub struct Int {
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value: i64,
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vtable: Vtable,
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attrs: Attrs,
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}
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impl Int {
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pub fn new_obj(value: i64) -> ObjRef<Self> {
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// TODO : cache int values
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self_referring_obj! {
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Self {
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value,
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vtable: Default::default(),
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attrs: Default::default(),
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},
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vtable: |obj_ref: ObjRef| vtable! {
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// TODO needs Method type so this function is given an argument when called
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STR_MEMBER_NAME.sym => Method::new_obj(obj_ref.clone(), INT_STR_FUN.clone()),
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}
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}
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}
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pub fn value(&self) -> i64 {
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self.value
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}
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}
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impl_obj_readonly!(Int);
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impl Debug for Int {
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fn fmt(&self, fmt: &mut Formatter) -> fmt::Result {
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fmt.debug_struct("Int")
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.field("value", &self.value)
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.finish()
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}
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}
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static INT_STR_FUN: Lazy<NativeFunRef> = Lazy::new(|| {
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NativeFun::new_obj(|_callee, vm, args| {
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read_obj!(let int_obj = &args[0]);
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if let Some(int_obj) = std::any::Any::downcast_ref::<Int>(int_obj.as_any()) {
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vm.push(Str::new_obj(int_obj.value.to_string()));
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} else {
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panic!("{:?} is not an int", int_obj)
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}
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crate::vm::signal::Signal::Return
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})
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});
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