Enum ProcessState 

pub enum ProcessState {
    AcceptingGate,
    AcceptingHamiltonian,
    ReadyToExecute,
    Terminated,
}

Internal state machine for a Process.

The state advances monotonically; once Terminated no further mutations are possible. Transitions are triggered by Process::sample, Process::exp_value, and Process::execute.

Variants

AcceptingGate

The process is accepting gate instructions via Process::append_block. This is the initial state.

AcceptingHamiltonian

At least one Hamiltonian expectation-value request has been registered via Process::exp_value (batch mode, no gradient). Additional Hamiltonians may still be added.

ReadyToExecute

All measurements are registered and the process is ready to execute. No further gates or Hamiltonian registrations are accepted.

Terminated

The process has been executed and is in a terminal state. No further instructions can be appended or execution triggered.

Trait Implementations

impl Clone for ProcessState

fn clone(&self) -> ProcessState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ProcessState

impl Debug for ProcessState

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

Formats the value using the given formatter.

impl Default for ProcessState

fn default() -> ProcessState

Returns the “default value” for a type.

impl From<ProcessState> for &'static CStr

Converts a ProcessState into the corresponding static C string.

Maps each variant to a null-terminated &'static CStr:

• ProcessState::AcceptingGate → "AcceptingGate"
• ProcessState::AcceptingHamiltonian → "AcceptingHamiltonian"
• ProcessState::ReadyToExecute → "ReadyToExecute"
• ProcessState::Terminated → "Terminated"

The returned pointer is valid for the lifetime of the program and must not be freed.

fn from(value: ProcessState) -> Self

Converts to this type from the input type.