Function internalScaleFunctions

docs/app/js/sanddance-app.js:142853–142866

(codegen, fnctx, visitors)

    return (0, _vegaUtil.isFunction)(name) ? name : (0, _vegaUtil.isString)(name) ? (s = ctx.scales[name]) && s.value : undefined;
}
function internalScaleFunctions(codegen, fnctx, visitors) {
    // add helper method to the 'this' expression function context
    fnctx.__bandwidth = (s)=>s && s.bandwidth ? s.bandwidth() : 0; // register AST visitors for internal scale functions
    visitors._bandwidth = scaleVisitor;
    visitors._range = scaleVisitor;
    visitors._scale = scaleVisitor; // resolve scale reference directly to the signal hash argument
    const ref = (arg)=>"_[" + (arg.type === (0, _vegaExpression.Literal) ? (0, _vegaUtil.stringValue)(ScalePrefix + arg.value) : (0, _vegaUtil.stringValue)(ScalePrefix) + "+" + codegen(arg)) + "]"; // define and return internal scale function code generators
    // these internal functions are called by mark encoders
    return {
        _bandwidth: (args)=>`this.__bandwidth(${ref(args[0])})`,
        _range: (args)=>`${ref(args[0])}.range()`,
        _scale: (args)=>`${ref(args[0])}(${codegen(args[1])})`
    };
}
function geoMethod(methodName, globalMethod) {
    return function(projection, geojson, group) {
        if (projection) {