import { ExecutionContext } from './executionContext';
import { ExecutionEngine } from './interfaces/engine';
import { OpCode } from './opCode';
import { OpExec } from './opExec';
import { Stack } from './utils/stack';
export declare class VMEngine implements ExecutionEngine {
    private evaluationStack;
    private altStack;
    private state;
    private contexts;
    private context;
    private opCode;
    private opExec;
    constructor();
    getContext(): ExecutionContext;
    getContexts(): ExecutionContext[];
    getOpCode(): number;
    getOpExec(): OpExec;
    getState(): number;
    setOpCode(opCode: OpCode): void;
    getEvaluationStack(): Stack<import("./types/stackItem").StackItem>;
    getAltStack(): Stack<import("./types/stackItem").StackItem>;
    currentContext(): ExecutionContext;
    popContext(): void;
    pushContext(context: ExecutionContext): void;
    execute(): Error | undefined;
    executeCode(): void;
    validateOp(): void;
    stepInto(): Error | undefined;
    executeOp(): void;
}