Function makeInputGate has a Cognitive Complexity of 14 (exceeds 5 allowed). Consider refactoring.

Open

let makeInputGate = (key, reverse) => Gate.buildFamily(1, 16, (span, builder) => builder.
    setSerializedId((reverse ? 'rev' : '') + `input${key}${span}`).
    setSymbol((reverse ? 'rev ' : '') + `input ${key}`).
    setTitle(`Input Gate [${key}]` + (reverse ? ' [reversed]' : '')).
    setBlurb(`Temporarily uses some qubits as input ${key}${reverse ? ', in big-endian order' : ''}.`).

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Function computeAndPaintOp has 43 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    function computeAndPaintOp(canvas, opGetter, button) {
        button.disabled = true;
        let painter = new Painter(canvas);
        painter.clear();
        let d = Math.min((canvas.width - 5)/2, canvas.height);

Function constructor has 42 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    constructor() {
        /** @type {!string} The text shown when drawing the gate. */
        this.symbol = '';
        /** @type {!string} The identifier text used for the gate when serializing/parsing JSON. */
        this.serializedId = '';

Function _drawColumnSurvivalRate has 42 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _drawColumnSurvivalRate(painter, gateColumn, col, stats) {
        if (gateColumn.indexOfNonUnitaryGate() === undefined) {
            return;
        }

Function constructor has 41 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    constructor(fragmentShaderSource, uniformParameterNames) {
        let ctx = initializedWglContext();
        let precision = ctx.maximumShaderFloatPrecision;
        let vertexShader = `
            precision ${precision} float;

Function PERMUTATION_DRAWER has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

GatePainting.PERMUTATION_DRAWER = args => {
    if (args.positionInCircuit === undefined) {
        GatePainting.DEFAULT_DRAWER(args);
        return;
    }

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Function _uncached_customContextFromGates has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

    _uncached_customContextFromGates(outerRowOffset) {
        let results = [];
        let stickyCtx = new Map();
        for (let col = 0; col < this.columns.length; col++) {
            let ctx = new Map(stickyCtx);

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Function withHeightOverlapsFixed has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

    withHeightOverlapsFixed(recurseLimit=5) {
        let newCols = [];
        for (let col = 0; col < this.columns.length; col++) {
            let pushedGateIndexes = this._findHeightWiseOverlapsInCol(col);
            if (pushedGateIndexes.size === 0) {

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Function isScaler has a Cognitive Complexity of 13 (exceeds 5 allowed). Consider refactoring.

Open

    isScaler(epsilon=0) {
        if (this._width !== this._height) {
            return false;
        }
        let sr = this._buffer[0];

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Function printParagraph has 39 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    printParagraph(text,
                   area,
                   proportionalCenterOfAlignment = new Point(0, 0),
                   fontColor = Config.DEFAULT_TEXT_COLOR,
                   maxFontSize = Config.DEFAULT_FONT_SIZE,

Function initMenu has 39 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function initMenu(revision, obsIsAnyOverlayShowing) {
    // Show/hide menu overlay.
    (() => {
        const menuButton = /** @type {!HTMLButtonElement} */ document.getElementById('menu-button');
        const closeMenuButton = /** @type {!HTMLButtonElement} */ document.getElementById('close-menu-button');

Function advanceStateWithCircuit has 38 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function advanceStateWithCircuit(ctx, circuitDefinition, collectStats) {
    // Prep stats collection.
    let colQubitDensities = [];
    let customStats = [];
    let colNorms = [];

Function _drawHint_useControls has 37 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    _drawHint_useControls(painter) {
        let visibilityFactor = this._hintVisibility();
        if (visibilityFactor <= 0) {
            return;
        }

Function drawClick has 37 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function drawClick(args, axis) {
    // Draw tilted "*click*" text.
    let clicked = args.customStats;
    if (!clicked) {
        return;

Function constructor has 36 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    constructor(canvas=undefined, context=undefined) {
        if (canvas === undefined) {
            canvas = /** @type {!HTMLCanvasElement} */ document.createElement('canvas');
            context = undefined;
        }

Function _drawHintLabels has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.

Open

    _drawHintLabels(painter, stats) {
        let gridRect = this._rectForSuperpositionDisplay();

        // Amplitude hint.
        painter.print(

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Function toJson_Gate has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.

Open

let toJson_Gate = (gate, context=new CustomGateSet()) => {
    let found = Gates.findKnownGateById(gate.serializedId, context);
    if (found === gate) {
        return gate.serializedId;
    }

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Function toJson_CircuitDefinition has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.

Open

let toJson_CircuitDefinition = (v, context) => {
    let result = {
        cols: v.trimEmptyColumnsAtEndIgnoringGateWidths().columns.
            map(e => toJson_GateColumn(e, context || v.customGateSet)).
            map(c => seq(c).skipTailWhile(e => e === 1).toArray())

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Function applyToStateVectorAtQubitWithControls has a Cognitive Complexity of 12 (exceeds 5 allowed). Consider refactoring.

Open

    applyToStateVectorAtQubitWithControls(stateVector, qubitIndex, controls) {
        let chunkSize = this._width*2;
        let chunkBuf = stateVector._buffer.slice(0, chunkSize);
        let strideLength = 2 << qubitIndex;
        let strideChunkSize = strideLength*chunkSize >> 1;

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Function onErrorHandler has 35 lines of code (exceeds 25 allowed). Consider refactoring.

Open

function onErrorHandler(errorMsg, url, lineNumber, columnNumber, errorObj) {
    try {
        let location = simplifySrcUrls(
            ((errorObj instanceof Object)? errorObj.stack : undefined) ||
                (url + ":" + lineNumber + ":" + columnNumber));