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VmState

Struct VmState 

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pub struct VmState {
    pub chunk_index: usize,
    pub ip: usize,
    pub current_line: usize,
    pub stack: Vec<StateValue>,
    pub variables: Vec<NamedValue>,
    pub console: Vec<String>,
    pub leak_log: Vec<String>,
}
Expand description

the playground’s step-through snapshot of the VM.

Vm::get_state builds one of these. it carries everything the playground’s panels render after each instruction: the current chunk index and instruction pointer (the bytecode panel’s highlight), the value stack (the animated stack panel), the current frame’s in-scope variables (the variables panel), the accumulated console output (the console panel), and the resource-leak log.

a plain data struct – no behaviour. derives serde::Serialize so Phase 6’s WASM bridge serializes it for JavaScript without a conversion layer.

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§chunk_index: usize

the index into Program::chunks of the function currently running.

§ip: usize

the instruction pointer: a byte offset into that chunk’s code.

§current_line: usize

the 1-based source line of the instruction at ip, for the editor’s current-line highlight. 0 means no line – a synthesized instruction or an out-of-range ip; the playground highlights nothing then.

§stack: Vec<StateValue>

the value stack bottom-to-top, each slot rendered and type-tagged.

§variables: Vec<NamedValue>

the current frame’s in-scope local variables, name + typed value.

§console: Vec<String>

the accumulated print / println output, one entry per write.

§leak_log: Vec<String>

the resource-leak log: a file handle freed while still open.

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impl Clone for VmState

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fn clone(&self) -> VmState

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for VmState

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Serialize for VmState

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<S, T> Upcast<T> for S
where T: UpcastFrom<S> + ?Sized, S: ?Sized,

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fn upcast(&self) -> &T
where Self: ErasableGeneric, T: ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider ref type within the Wasm bindgen generics type system. Read more
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fn upcast_into(self) -> T
where Self: Sized + ErasableGeneric, T: ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider type within the Wasm bindgen generics type system. Read more