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auto.ts
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auto.ts
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export class Automata {
protected states: any;
protected initialState: any;
protected acceptingStates: any;
protected nextState: Function;
constructor(
states: any,
initialState: any,
acceptingStates: any,
nextState: Function
) {
this.states = states;
this.initialState = initialState;
this.acceptingStates = acceptingStates;
this.nextState = nextState;
}
run(input: string): any {
let currentState = this.initialState;
let length = 0;
input.split("").every((character, i) => {
let nextState = this.nextState(currentState, character);
if (nextState === Automata.NoNextState) {
return false;
}
currentState = nextState;
length = i;
return true;
});
// console.log("returning from Auto");
// console.log("from Auto", input.slice(0, length + 1));
return {
recognized: this.acceptingStates.has(currentState),
value: input.slice(0, length + 1),
state: currentState
};
}
}
export namespace Automata {
export const NoNextState = -1;
}