#![allow(nonstandard_style)]
// Generated from VisitorCalc.g4 by ANTLR 4.8
use super::visitorcalcparser::*;
use antlr_rust::tree::ParseTreeListener;

pub trait VisitorCalcListener<'input>:
    ParseTreeListener<'input, VisitorCalcParserContextType>
{
    /**
     * Enter a parse tree produced by {@link VisitorCalcParser#s}.
     * @param ctx the parse tree
     */
    fn enter_s(&mut self, _ctx: &SContext<'input>) {}
    /**
     * Exit a parse tree produced by {@link VisitorCalcParser#s}.
     * @param ctx the parse tree
     */
    fn exit_s(&mut self, _ctx: &SContext<'input>) {}
    /**
     * Enter a parse tree produced by the {@code add}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn enter_add(&mut self, _ctx: &AddContext<'input>) {}
    /**
     * Exit a parse tree produced by the {@code add}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn exit_add(&mut self, _ctx: &AddContext<'input>) {}
    /**
     * Enter a parse tree produced by the {@code number}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn enter_number(&mut self, _ctx: &NumberContext<'input>) {}
    /**
     * Exit a parse tree produced by the {@code number}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn exit_number(&mut self, _ctx: &NumberContext<'input>) {}
    /**
     * Enter a parse tree produced by the {@code multiply}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn enter_multiply(&mut self, _ctx: &MultiplyContext<'input>) {}
    /**
     * Exit a parse tree produced by the {@code multiply}
     * labeled alternative in {@link VisitorCalcParser#expr}.
     * @param ctx the parse tree
     */
    fn exit_multiply(&mut self, _ctx: &MultiplyContext<'input>) {}
}

antlr_rust::coerce_from! { 'input : VisitorCalcListener<'input> }