Blockly.Block.prototype.jsonInit = function()

in core/block.js [1575:1666]

• 74 lines of code
• 24 McCabe index (conditional complexity)

Blockly.Block.prototype.jsonInit = function(json) {
  var warningPrefix = json['type'] ? 'Block "' + json['type'] + '": ' : '';

  // Validate inputs.
  if (json['output'] && json['previousStatement']) {
    throw Error(warningPrefix +
        'Must not have both an output and a previousStatement.');
  }

  // Set basic properties of block.
  // Makes styles backward compatible with old way of defining hat style.
  if (json['style'] && json['style'].hat) {
    this.hat = json['style'].hat;
    // Must set to null so it doesn't error when checking for style and colour.
    json['style'] = null;
  }

  if (json['style'] && json['colour']) {
    throw Error(warningPrefix + 'Must not have both a colour and a style.');
  } else if (json['style']) {
    this.jsonInitStyle_(json, warningPrefix);
  } else {
    this.jsonInitColour_(json, warningPrefix);
  }

  // Interpolate the message blocks.
  var i = 0;
  while (json['message' + i] !== undefined) {
    this.interpolate_(json['message' + i], json['args' + i] || [],
        json['lastDummyAlign' + i], warningPrefix);
    i++;
  }

  if (json['inputsInline'] !== undefined) {
    this.setInputsInline(json['inputsInline']);
  }
  if (json['startHat'] !== undefined) {
    this.setStartHat(json['startHat']);
  }
  // Set output and previous/next connections.
  if (json['output'] !== undefined) {
    this.setOutput(true, json['output']);
  }
  if (json['outputShape'] !== undefined) {
    this.setOutputShape(json['outputShape']);
  }
  if (json['previousStatement'] !== undefined) {
    this.setPreviousStatement(true, json['previousStatement']);
  }
  if (json['nextStatement'] !== undefined) {
    this.setNextStatement(true, json['nextStatement']);
  }
  if (json['tooltip'] !== undefined) {
    var rawValue = json['tooltip'];
    var localizedText = Blockly.utils.replaceMessageReferences(rawValue);
    this.setTooltip(localizedText);
  }
  if (json['enableContextMenu'] !== undefined) {
    var rawValue = json['enableContextMenu'];
    this.contextMenu = !!rawValue;
  }
  if (json['helpUrl'] !== undefined) {
    var rawValue = json['helpUrl'];
    var localizedValue = Blockly.utils.replaceMessageReferences(rawValue);
    this.setHelpUrl(localizedValue);
  }
  if (typeof json['extensions'] == 'string') {
    console.warn(
        warningPrefix + 'JSON attribute \'extensions\' should be an array of' +
        ' strings. Found raw string in JSON for \'' + json['type'] +
        '\' block.');
    json['extensions'] = [json['extensions']];  // Correct and continue.
  }

  // Add the mutator to the block.
  if (json['mutator'] !== undefined) {
    Blockly.Extensions.apply(json['mutator'], this, true);
  }

  var extensionNames = json['extensions'];
  if (Array.isArray(extensionNames)) {
    for (var j = 0; j < extensionNames.length; ++j) {
      Blockly.Extensions.apply(extensionNames[j], this, false);
    }
  }
  if (json['outputShape'] !== undefined) {
    this.setOutputShape(json['outputShape']);
  }
  if (json['category'] !== undefined) {
    this.setCategory(json['category']);
  }
};