Function parameterValue

docs/app/js/sanddance-app.js:148108–148115

* Parse a single parameter value.

(def, value13, scope)

/**
 * Parse a single parameter value.
 */ function parameterValue(def, value13, scope) {
    const type = def.type;
    if (isSignal(value13)) return isExpr(type) ? (0, _vegaUtil.error)("Expression references can not be signals.") : isField(type) ? scope.fieldRef(value13) : isCompare(type) ? scope.compareRef(value13) : scope.signalRef(value13.signal);
    else {
        const expr4 = def.expr || isField(type);
        return expr4 && outerExpr(value13) ? scope.exprRef(value13.expr, value13.as) : expr4 && outerField(value13) ? fieldRef$1(value13.field, value13.as) : isExpr(type) ? (0, _vegaFunctions.parseExpression)(value13, scope) : isData(type) ? ref(scope.getData(value13).values) : isField(type) ? fieldRef$1(value13) : isCompare(type) ? scope.compareRef(value13) : value13;
    }
}
/**
 * Parse parameter for accessing an index of another data set.
 */ function parseIndexParameter(def, spec, scope) {