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• 0.7.1
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• Operator.java

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com.github.leeonky.interpreter.Operator Maven / Gradle / Ivy

package com.github.leeonky.interpreter;

public abstract class Operator, O extends Operator,
        E extends Expression> {
    protected final int precedence;
    protected final String label;
    private int position;

    public Operator(int precedence, String label) {
        this.precedence = precedence;
        this.label = label;
    }

    public boolean isPrecedentThan(O operator) {
        return precedence > operator.precedence;
    }

    public abstract Object calculate(E expression, C context);

    public int getPosition() {
        return position;
    }

    @SuppressWarnings("unchecked")
    public O setPosition(int position) {
        this.position = position;
        return (O) this;
    }
}