bendns' repos / rust-fsm
Finite state machines in rust; bendns fork to add types.
Diffstat (limited to 'rust_fsm/src/machine_wrapper.rs')
-rw-r--r--rust_fsm/src/machine_wrapper.rs52
1 files changed, 0 insertions, 52 deletions
diff --git a/rust_fsm/src/machine_wrapper.rs b/rust_fsm/src/machine_wrapper.rs
deleted file mode 100644
index a48cb1a..0000000
--- a/rust_fsm/src/machine_wrapper.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-use crate::StateMachine;
-
-/// A convenience wrapper around the `StateMachine` trait that encapsulates the
-/// state and transition and output function calls.
-pub struct StateMachineWrapper<T: StateMachine> {
- state: T::State,
-}
-
-impl<T> StateMachineWrapper<T>
-where
- T: StateMachine,
-{
- /// Create a new instance of this wrapper which encapsulates the initial
- /// state.
- pub fn new() -> Self {
- StateMachineWrapper {
- state: T::INITIAL_STATE,
- }
- }
-
- /// Consumes the provided input, gives an output and performs a state
- /// transition. If a state transition with the current state and the
- /// provided input is not allowed, returns an error.
- pub fn consume(&mut self, input: &T::Input) -> Result<Option<T::Output>, ()> {
- // Operations are reodered for optimization. When the transition is not
- // allowed this code exits as soon as possible without calculating the
- // output.
- let state = match T::transition(&self.state, input) {
- Some(state) => state,
- None => return Err(()),
- };
- let output = T::output(&self.state, input);
- self.state = state;
- Ok(output)
- }
-
- /// Consumes the provided input, gives an output and performs a state
- /// transition. If a state transition is not allowed, this function just
- /// provides an output.
- pub fn consume_anyway(&mut self, input: &T::Input) -> Option<T::Output> {
- let output = T::output(&self.state, input);
- if let Some(state) = T::transition(&self.state, input) {
- self.state = state;
- }
- output
- }
-
- /// Returns the current state.
- pub fn state(&self) -> &T::State {
- &self.state
- }
-}