TryCatch.sol

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

import "hardhat/console.sol";

contract TryCatchCaller {
    TryCatchCallee calee;

    constructor () {
        calee = new TryCatchCallee();
    }

    function callMe() public {
        console.log("inside TryCatchCaller.callMe()");
    }

    function test() public {
        try calee.test() {
            console.log("TryCatchCallee.test() ran successful");
        } catch {
            console.log("TryCatchCallee.test() failed");
        }
    }

    // will not compile
    function test2() public {
        try callMe() {
            console.log("TryCatchCaller.callMe() ran successful");
        } catch {
            console.log("TryCatchCaller.callMe() failed");
        }
    }

    // totally ok
    function test3() public {
        try TryCatchCaller(address(this)).callMe() {
            console.log("TryCatchCaller.callMe() ran successful");
        } catch {
            console.log("TryCatchCaller.callMe() failed");
        }
    }

    // totally ok
    function test4() public {
        try this.callMe() {
            console.log("this.callMe() ran successful");
        } catch {
            console.log("this.callMe() failed");
        }
    }
}
 
contract TryCatchCallee {

    function test() public {
        console.log("inside TryCatchCallee.test()");
    }
}