Function evalInFrame

modules/script/_bootstrap/debugger.js:240–267

(expr)

// Evaluate @expr in the current frame, logging and suppressing any exceptions
function evalInFrame(expr) {
    if (!focusedFrame) {
        print('No stack');
        return;
    }

    skipUnwindHandler = true;
    let cv;
    try {
        cv = saveExcursion(
            () => focusedFrame.evalWithBindings(`(${expr})`, debuggeeValues));
    } finally {
        skipUnwindHandler = false;
    }

    if (cv === null) {
        print(`Debuggee died while evaluating ${expr}`);
        return;
    }

    const {throw: exc, return: dv} = cv;
    if (exc) {
        print(`Exception caught while evaluating ${expr}: ${dvToString(exc)}`);
        return;
    }

    return {value: dv};
}

// Accept debugger commands starting with '#' so that scripting the debugger
// can be annotated