Function ifExpr

docs/app/js/sanddance-app.js:148855–148857

(test, a, b)

};
const isSimple = (enc)=>enc == null || Object.keys(enc).length === 1;
const ifExpr = (test, a, b)=>({
        signal: `${test} ? (${toExpr(a)}) : (${toExpr(b)})`
    });
const ifOrient = ($orient, t, b, l, r)=>({
        signal: (l != null ? `${$orient} === '${Left}' ? (${toExpr(l)}) : ` : "") + (b != null ? `${$orient} === '${Bottom}' ? (${toExpr(b)}) : ` : "") + (r != null ? `${$orient} === '${Right}' ? (${toExpr(r)}) : ` : "") + (t != null ? `${$orient} === '${Top}' ? (${toExpr(t)}) : ` : "") + "(null)"
    });