chao
/
mini_cocopi


			
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							<!DOCTYPE html>
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<head>
    <meta charset="utf-8">
    <title>JSDoc: Source: imported.js</title>

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    <h1 class="page-title">Source: imported.js</h1>

    
    <section>
        <article>
            <pre class="prettyprint source linenums"><code>/*
Blockly.Blocks['classics_get_all'] = {
  init: function() {
    this.setHelpUrl('http://www.example.com/');
    this.setColour(WEATHER_HUE);
    this.appendDummyInput()
        .appendField("classics.get all books");
    this.setInputsInline(false);
    this.setOutput(true, "Number");
    this.setTooltip('Returns all the books');
  }
};
Blockly.Python['classics_get_all'] = function(block) {
    Blockly.Python.definitions_['import_classics'] = 'import classics';
    var code = 'classics.get_all()';
    return [code, Blockly.Python.ORDER_ATOMIC];
};

PythonToBlocks.KNOWN_MODULES['classics'] = {
    "get_all": ["classics_get_all"]
};
*/


function newBlock(name) {
    var block = blockpy.components.editor.blockly.newBlock(name);
    block.initSvg();
    block.render();
}

var DAYS = [
    ["Monday", "MON"],
    ["Tuesday", "TUE"],
    ["Wednesday", "WED"],
    ["Thursday", "THU"],
    ["Friday", "FRI"],
    ["Saturday", "SAT"],
    ["Sunday", "SUN"]
  ]

var DAYS_MAP = {
        'mon': 'parking.Day("MON")',
        'tue': 'parking.Day("TUE")',
        'wed': 'parking.Day("WED")',
        'thu': 'parking.Day("THU")',
        'fri': 'parking.Day("FRI")',
        'sat': 'parking.Day("SAT")',
        'sun': 'parking.Day("SUN")',
        'tod': 'parking.today()'
    };


Blockly.Blocks['datetime_day'] = {
  /**
   * Block for datetime day.
   * @this Blockly.Block
   */
  init: function() {
    this.jsonInit({
      "message0": "%1",
      "args0": [
        {
          "type": "field_dropdown",
          "name": "DAY",
          "options": [["Today", "TODAY"]].concat(DAYS)
        }
      ],
      "output": "DatetimeDay",
      "colour": DATA_HUE,
      "tooltip": "Returns a day of the week",
      "helpUrl": ""
    });
  }
};
Blockly.Python['datetime_day'] = function(block) {
    Blockly.Python.definitions_['import_parking'] = 'import parking';
    var operator = DAYS_MAP[block.getFieldValue('DAY').slice(0, 3).toLowerCase()];
    return [operator, Blockly.Python.ORDER_ATOMIC];
};

var HOURS = [["1", "1"], ["2", "2"], ["3", "3"],
             ["4", "4"], ["5", "5"], ["6", "6"], ["7", "7"],
             ["8", "8"], ["9", "9"], ["10", "10"], ["11", "11"],
             ["12", "12"]];
var MINUTES = [["00", "00"], ["30", "30"]];
var MERIDIANS = [["am", "AM"], ["pm", "PM"]];

Blockly.Blocks['datetime_time'] = {
  /**
   * Block for datetime day.
   * @this Blockly.Block
   */
    init: function() {
        this.setColour(DATA_HUE);
        var dropdown = new Blockly.FieldDropdown([["Now", "NOW"]].concat(HOURS), function(opt) {
            var isNow = (opt == 'NOW');
            this.sourceBlock_.updateShape_(isNow);
        });
        this.appendDummyInput()
            .appendField(dropdown, 'HOUR');
        this.setInputsInline(true);
        this.setOutput(true, 'DatetimeTime');
        this.setTooltip("Returns a time of day");
    },
    mutationToDom: function() {
        var container = document.createElement('mutation');
        var isNow = (this.getFieldValue('HOUR').toUpperCase() == 'NOW');
        container.setAttribute('isnow', isNow);
        return container;
    },
    domToMutation: function(xmlElement) {
        var isNow = (xmlElement.getAttribute('isnow') == 'true');
        this.updateShape_(isNow);
    },
    updateShape_: function(isNow) {
        // Add or remove a Value Input.
        var inputExists = this.getInput('EXTENDED');
        if (!isNow) {
            if (!inputExists) {
                var minuteMenu = new Blockly.FieldDropdown(MINUTES);
                var meridianMenu = new Blockly.FieldDropdown(MERIDIANS);
                this.appendDummyInput('EXTENDED')
                    .appendField(':')
                    .appendField(minuteMenu, 'MINUTE')
                    .appendField(meridianMenu, 'MERIDIAN');
            }
        } else if (inputExists) {
            this.removeInput('EXTENDED');
        }
    }
};

var HOURS_MAP = {
    '1': 'parking.one()',
    '2': 'parking.two()',
    '3': 'parking.three()',
    '4': 'parking.four()',
    '5': 'parking.five()',
    '6': 'parking.six()',
    '7': 'parking.seven()',
    '8': 'parking.eight()',
    '9': 'parking.nine()',
    '10': 'parking.ten()',
    '11': 'parking.eleven()',
    '12': 'parking.twelve()',
    'NOW': 'parking.now()'
};
var MINUTES_MAP = {
    '00': 'parking.exactly()',
    '30': 'parking.half()'
}
var MERIDIANS_MAP = {
    'AM': 'parking.am()',
    'PM': 'parking.pm()'
}

Blockly.Python['datetime_time'] = function(block) {
    Blockly.Python.definitions_['import_parking'] = 'import parking';
    var hour = block.getFieldValue('HOUR');
    var code;
    if (hour == "NOW") {
        code = "parking.now()";
    } else {
        var minute = parseInt(block.getFieldValue('MINUTE'));
        var meridian = Blockly.Python.quote_(block.getFieldValue('MERIDIAN'));
        code = 'parking.Time('+hour+','+minute+','+meridian+')';
    }
    return [code, Blockly.Python.ORDER_ATOMIC];
};

var convertDate = function(date) {
    date = date.slice(0, 3).toLowerCase();
    switch (date) {
        case "mon": return "Monday";
        case "tue": return "Tuesday";
        case "wed": return "Wednesday";
        case "thu": return "Thursday";
        case "fri": return "Friday";
        case "sat": return "Saturday";
        case "sun": return "Sunday";
        default: return date;
    }
}
var convertMinute = function(minute) {
    if (minute &lt; 10) {
        return "0"+minute;
    } else {
        return ""+minute;
    }
}

PythonToBlocks.KNOWN_MODULES['parking'] = {
    "today": ["datetime_day", ["DAY", "TODAY"]],
    "day_compare": ["datetime_check_day", "OP", 
                            {"type": "variable", "mode": "value", "name": "LEFT"}, 
                            {"type": "mapper", "name": "VALUE", "method": convertDate}],
    "Day": ["datetime_day", {"type": "mapper", "name": "DAY", "method": convertDate}],
    "now": ["datetime_time", ["HOUR", "NOW"]],
    "Time": ["datetime_time", {"type": "integer", "name": "HOUR", "add_mutation": {"name": "@isnow", "value": "false"}}, 
                             {"type": "integer_mapper", "name": "MINUTE", "method": convertMinute}, 
                             "MERIDIAN"],
    "time_compare": ["datetime_check_time", "OP",
                            {"type": "variable", "mode": "value", "name": "LEFT"}, 
                            {"type": "integer", "name": "HOURS"},
                            {"type": "integer_mapper", "name": "MINUTES", "method": convertMinute},
                            "MERIDIANS"]
};

var equalityOperators = [
    ["==", "IS"],
    ["&lt;", "BEFORE"],
    [">", "AFTER"],
    ["&lt;=", "BEFORE_EQUAL"],
    ["=>", "AFTER_EQUAL"],
    ["!=", "IS_NOT"]
];
var equalityOperatorsConversions = {
    "IS": "parking.equal",
    "BEFORE": "parking.before",
    "AFTER": "parking.after",
    "BEFORE_EQUAL": "parking.before_equal",
    "AFTER_EQUAL": "parking.after_equal",
    "IS_NOT": "parking.not_equal",
}
// FINISH _time and _day
// Add in numbers and days to KNOWN_MODULES

Blockly.Blocks['datetime_check_day'] = {
  /**
   * Block for testing if something contains something.
   * @this Blockly.Block
   */
  init: function() {
    this.setColour(Blockly.Blocks.logic.HUE);
    this.setOutput(true, 'Boolean');
    this.appendValueInput('LEFT')
        .setCheck('DatetimeDay')
        .appendField(new Blockly.FieldDropdown(DAYS), 'VALUE')
        .appendField(new Blockly.FieldDropdown(equalityOperators), 'OP');
    
    this.setInputsInline(false);
  }
};

Blockly.Python['datetime_check_day'] = function(block) {
    Blockly.Python.definitions_['import_parking'] = 'import parking';
    var value = Blockly.Python.quote_(block.getFieldValue('VALUE'));
    var operator = Blockly.Python.quote_(block.getFieldValue('OP'));
    var left = Blockly.Python.valueToCode(block, 'LEFT', Blockly.Python.ORDER_ATOMIC) || "___";
    var code = "parking.day_compare(" + operator + ", " + left + ', ' + value + ")";
    return [code, Blockly.Python.ORDER_ATOMIC];
};


Blockly.Blocks['datetime_check_time'] = {
  /**
   * Block for testing if something contains something.
   * @this Blockly.Block
   */
  init: function() {
    this.setColour(Blockly.Blocks.logic.HUE);
    this.setOutput(true, 'Boolean');
    this.appendValueInput('LEFT')
        .setCheck('DatetimeTime')
        .appendField(new Blockly.FieldDropdown(HOURS), 'HOURS')
        .appendField(':')
        .appendField(new Blockly.FieldDropdown(MINUTES), 'MINUTES')
        .appendField(new Blockly.FieldDropdown(MERIDIANS), 'MERIDIANS')
        .appendField(new Blockly.FieldDropdown(equalityOperators), 'OP');
    //this.setInputsInline(true);
  }
};

Blockly.Python['datetime_check_time'] = function(block) {
    Blockly.Python.definitions_['import_parking'] = 'import parking';
    var hour = parseInt(block.getFieldValue('HOURS'));
    var minute = parseInt(block.getFieldValue('MINUTES'));
    var meridian = Blockly.Python.quote_(block.getFieldValue('MERIDIANS'));
    var operator = Blockly.Python.quote_(block.getFieldValue('OP'));
    var left = Blockly.Python.valueToCode(block, 'LEFT', Blockly.Python.ORDER_ATOMIC)
    var code = "parking.time_compare(" + operator+", "+left + ',' + hour + ',' + minute + ',' +meridian + ")";
    return [code, Blockly.Python.ORDER_ATOMIC];
};

Blockly.Blocks['controls_forEach'] = {
  /**
   * Block for 'for each' loop.
   * @this Blockly.Block
   */
  init: function() {
    this.jsonInit({
      "message0": "for each item %1 in list %2 : ", //Blockly.Msg.CONTROLS_FOREACH_TITLE,
      "args0": [
        {
          "type": "input_value",
          "name": "VAR",
          "check": "Tuple"
        },
        {
          "type": "input_value",
          "name": "LIST",
          "check": "Array"
        }
      ],
      "inputsInline": true,
      "previousStatement": null,
      "nextStatement": null,
      "colour": Blockly.Blocks.loops.HUE,
      "helpUrl": Blockly.Msg.CONTROLS_FOREACH_HELPURL
    });
    this.appendStatementInput('DO')
        .appendField(Blockly.Msg.CONTROLS_FOREACH_INPUT_DO);
    this.setInputsInline(true);
    // Assign 'this' to a variable for use in the tooltip closure below.
    var thisBlock = this;
    this.setTooltip(function() {
      return Blockly.Msg.CONTROLS_FOREACH_TOOLTIP.replace('%1',
          Blockly.Python.valueToCode(thisBlock, 'VAR', Blockly.Python.ORDER_RELATIONAL) || '___');
    });
  },
  customContextMenu: Blockly.Blocks['controls_for'].customContextMenu
};

Blockly.Python['controls_forEach'] = function(block) {
  // For each loop.
  var variable0 = Blockly.Python.valueToCode(block, 'VAR',
      Blockly.Python.ORDER_RELATIONAL) || '___';
  var argument0 = Blockly.Python.valueToCode(block, 'LIST',
      Blockly.Python.ORDER_RELATIONAL) || '___';
  var branch = Blockly.Python.statementToCode(block, 'DO');
  branch = Blockly.Python.addLoopTrap(branch, block.id) ||
      Blockly.Python.PASS;
  var code = 'for ' + variable0 + ' in ' + argument0 + ':\n' + branch;
  return code;
};

Blockly.Blocks['class_creation'] = {
  init: function() {
    this.appendDummyInput()
        .appendField("Create class")
        .appendField(new Blockly.FieldVariable("new class"), "CLASS");
    /*
    this.appendDummyInput()
        .appendField("Inherits from")
        .appendField(new Blockly.FieldVariable("j"), "NAME")
        .appendField(",")
        .appendField(new Blockly.FieldVariable("k"), "NAME");
    */
    this.appendStatementInput("BODY")
        .setCheck(null);
    this.setPreviousStatement(true, null);
    this.setNextStatement(true, null);
    this.setColour(230);
    this.setTooltip('');
    this.setHelpUrl('http://www.example.com/');
  }
};
Blockly.Python['class_creation'] = function(block) {
  var class_name = Blockly.Python.variableDB_.getName(block.getFieldValue('CLASS'), Blockly.Variables.NAME_TYPE) || '___';
  var body = Blockly.Python.statementToCode(block, 'BODY') ||
      Blockly.Python.PASS;
  // TODO: Assemble Python into code variable.
  var code = 'class ' + class_name + ':\n' + body;
  return code;
};

Blockly.Blocks['list_comprehension'] = {
  init: function() {
    this.appendValueInput("body")
        .setCheck(null)
        .appendField("[");
    this.appendValueInput("var")
        .setCheck(null)
        .appendField("for");
    this.appendValueInput("list")
        .setCheck(null)
        .appendField("in");
    this.appendDummyInput()
        .appendField("]");
    this.setInputsInline(true);
    this.setOutput(true, null);
    this.setTooltip('');
    this.setHelpUrl('http://www.example.com/');
  }
};
Blockly.Python['list_comprehension'] = function(block) {
  var value_body = Blockly.Python.valueToCode(block, 'body', Blockly.Python.ORDER_ATOMIC) || '___';
  var value_var = Blockly.Python.valueToCode(block, 'var', Blockly.Python.ORDER_ATOMIC) || '___';
  var value_list = Blockly.Python.valueToCode(block, 'list', Blockly.Python.ORDER_ATOMIC) || '___';
  // TODO: Assemble Python into code variable.
  var code = '['+value_body+' for '+value_var+' in '+value_list+']';
  // TODO: Change ORDER_NONE to the correct strength.
  return [code, Blockly.Python.ORDER_NONE];
};

/**
 * Decode an XML DOM and create blocks on the workspace, clearing out old blocks.
 * @param {!Element} xml XML DOM.
 * @param {!Blockly.Workspace} workspace The workspace.
 */
Blockly.Xml.domToWorkspaceDestructive = function(xml, workspace, errorXml) {
  if (xml instanceof Blockly.Workspace) {
    var swap = xml;
    xml = workspace;
    workspace = swap;
    console.warn('Deprecated call to Blockly.Xml.domToWorkspace, ' +
                 'swap the arguments.');
  }
  var width;  // Not used in LTR.
  if (workspace.RTL) {
    width = workspace.getWidth();
  }
  Blockly.Field.startCache();
  // Safari 7.1.3 is known to provide node lists with extra references to
  // children beyond the lists' length.  Trust the length, do not use the
  // looping pattern of checking the index for an object.
  var childCount = xml.childNodes.length;
  var existingGroup = Blockly.Events.getGroup();
  if (!existingGroup) {
    Blockly.Events.setGroup(true);
  }
  Blockly.Events.disable();
  while (workspace.topBlocks_.length) {
    workspace.topBlocks_[0].dispose();
  }
  workspace.variableList.length = 0;
  Blockly.Events.enable();

  // Disable workspace resizes as an optimization.
  if (workspace.setResizesEnabled) {
    workspace.setResizesEnabled(false);
  }
  for (var i = 0; i &lt; childCount; i++) {
    var xmlChild = xml.childNodes[i];
    var name = xmlChild.nodeName.toLowerCase();
    if (name == 'block' ||
        (name == 'shadow' &amp;&amp; !Blockly.Events.recordUndo)) {
      // Allow top-level shadow blocks if recordUndo is disabled since
      // that means an undo is in progress.  Such a block is expected
      // to be moved to a nested destination in the next operation.
      var block = Blockly.Xml.domToBlock(xmlChild, workspace);
      var blockX = parseInt(xmlChild.getAttribute('x'), 10);
      var blockY = parseInt(xmlChild.getAttribute('y'), 10);
      if (!isNaN(blockX) &amp;&amp; !isNaN(blockY)) {
        block.moveBy(workspace.RTL ? width - blockX : blockX, blockY);
      }
    } else if (name == 'shadow') {
      goog.asserts.fail('Shadow block cannot be a top-level block.');
    }
  }
  if (!existingGroup) {
    Blockly.Events.setGroup(false);
  }
  Blockly.Field.stopCache();

  workspace.updateVariableList(false);
  // Re-enable workspace resizing.
  if (workspace.setResizesEnabled) {
    workspace.setResizesEnabled(true);
  }      
}

Blockly.Blocks['comment_single'] = {
  init: function() {
    this.appendDummyInput()
        .appendField("Comment:")
        .appendField(new Blockly.FieldTextInput("will be ignored"), "BODY");
    this.setInputsInline(true);
    this.setPreviousStatement(true, null);
    this.setNextStatement(true, null);
    this.setColour(60);
    this.setTooltip('This is a comment, which will be ignored when you execute your code.');
    this.setHelpUrl('');
  }
};

Blockly.Python['comment_single'] = function(block) {
  var text_body = block.getFieldValue('BODY');
  // TODO: Assemble JavaScript into code variable.
  var code = '# '+text_body+'\n';
  return code;
};

Blockly.Blocks['string_multiline'] = {
  // Container.
  init: function() {
    this.appendDummyInput()
        .appendField('Multiline String:');
    this.appendDummyInput()
        .appendField(this.newQuote_(true))
        .appendField(new Blockly.FieldTextArea(''), 'TEXT')
        .appendField(this.newQuote_(false));
    this.setColour(Blockly.Blocks.texts.HUE);
    this.setOutput(true, 'String');
  },
  newQuote_: function(open) {
    if (open == this.RTL) {
      var file = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAQAAAAqJXdxAAAAqUlEQVQI1z3KvUpCcRiA8ef9E4JNHhI0aFEacm1o0BsI0Slx8wa8gLauoDnoBhq7DcfWhggONDmJJgqCPA7neJ7p934EOOKOnM8Q7PDElo/4x4lFb2DmuUjcUzS3URnGib9qaPNbuXvBO3sGPHJDRG6fGVdMSeWDP2q99FQdFrz26Gu5Tq7dFMzUvbXy8KXeAj57cOklgA+u1B5AoslLtGIHQMaCVnwDnADZIFIrXsoXrgAAAABJRU5ErkJggg==';
    } else {
      var file = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAKCAQAAAAqJXdxAAAAn0lEQVQI1z3OMa5BURSF4f/cQhAKjUQhuQmFNwGJEUi0RKN5rU7FHKhpjEH3TEMtkdBSCY1EIv8r7nFX9e29V7EBAOvu7RPjwmWGH/VuF8CyN9/OAdvqIXYLvtRaNjx9mMTDyo+NjAN1HNcl9ZQ5oQMM3dgDUqDo1l8DzvwmtZN7mnD+PkmLa+4mhrxVA9fRowBWmVBhFy5gYEjKMfz9AylsaRRgGzvZAAAAAElFTkSuQmCC';
    }
    return new Blockly.FieldImage(file, 12, 12, '"');
  }
};

Blockly.Python['string_multiline'] = function(block) {
  var text_body = block.getFieldValue('TEXT');
  // TODO: Assemble JavaScript into code variable.
  var code = '"""'+text_body+'"""\n';
  return [code, Blockly.Python.ORDER_ATOMIC];
};

Blockly.Blocks['attribute_access'] = {
  init: function() {
    this.appendValueInput("MODULE")
        .setCheck(null);
    this.appendValueInput("NAME")
        .setCheck(null)
        .appendField(".");
    this.setInputsInline(true);
    this.setOutput(true, null);
    this.setColour(230);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};

Blockly.Python['attribute_access'] = function(block) {
  var value_module = Blockly.Python.valueToCode(block, 'MODULE', Blockly.Python.ORDER_ATOMIC);
  var value_name = Blockly.Python.valueToCode(block, 'NAME', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble JavaScript into code variable.
  var code = value_module+'.'+value_name;
  // TODO: Change ORDER_NONE to the correct strength.
  return [code, Blockly.Python.ORDER_NONE];
};


/**
 * Turtles!
 */
Blockly.Blocks['turtle_create'] = {
  init: function() {
    this.appendDummyInput()
        .appendField("create new turtle");
    this.setOutput(true, 'Turtle');
    this.setColour(180);
    this.setTooltip('Creates a new turtle');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_create'] = function(block) {
    Blockly.Python.definitions_['import_turtle'] = 'import turtle';
  var code = 'turtle.Turtle()\n';
  // TODO: Change ORDER_NONE to the correct strength.
  return [code, Blockly.Python.ORDER_NONE];
};
PythonToBlocks.KNOWN_MODULES['turtle'] = {
    "Turtle": ["turtle_create"]
}

Blockly.Blocks['turtle_color'] = {
  init: function() {
    this.appendValueInput("TURTLE")
        .setCheck("Turtle")
        .appendField("make turtle");
    this.appendValueInput("COLOR")
        .setCheck(null)
        .appendField("color");
    this.setPreviousStatement(true);
    this.setNextStatement(true);
    this.setOutput(false);
    this.setInputsInline(true);
    this.setColour(180);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_color'] = function(block) {
  var turtle = Blockly.Python.valueToCode(block, 'TURTLE', Blockly.Python.ORDER_ATOMIC);
  var color = Blockly.Python.valueToCode(block, 'COLOR', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble Python into code variable.
  var code = turtle+'.color('+color+')\n';
  return code;
};
PythonToBlocks.KNOWN_ATTR_FUNCTIONS['color'] = function(func, args, keywords, starargs, kwargs, node) {
    if (args.length &lt; 1 || args.length > 2) {
        throw new Error("Incorrect number of arguments to turtle.color!");
    }
    return [block("turtle_color", func.lineno, {}, { 
                    "COLOR": this.convert(args[0]),
                    "TURTLE": this.convert(func.value)
                }, {"inline": "true"})];
}

Blockly.Blocks['turtle_forward'] = {
  init: function() {
    this.appendValueInput("TURTLE")
        .setCheck("Turtle")
        .appendField("make turtle");
    this.appendValueInput("DISTANCE")
        .setCheck(null)
        .appendField("move forward by");
    this.setPreviousStatement(true);
    this.setNextStatement(true);
    this.setInputsInline(true);
    this.setOutput(false);
    this.setColour(180);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_forward'] = function(block) {
  var turtle = Blockly.Python.valueToCode(block, 'TURTLE', Blockly.Python.ORDER_ATOMIC);
  var distance = Blockly.Python.valueToCode(block, 'DISTANCE', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble Python into code variable.
  var code = turtle+'.forward('+distance+')\n';
  return code;
};
PythonToBlocks.KNOWN_ATTR_FUNCTIONS['forward'] = function(func, args, keywords, starargs, kwargs, node) {
    if (args.length != 1) {
        throw new Error("Incorrect number of arguments to turtle.forward!");
    }
    return [block("turtle_forward", func.lineno, {}, { 
                    "DISTANCE": this.convert(args[0]),
                    "TURTLE": this.convert(func.value)
                }, {"inline": "true"})];
}

Blockly.Blocks['turtle_backward'] = {
  init: function() {
    this.appendValueInput("TURTLE")
        .setCheck("Turtle")
        .appendField("make turtle");
    this.appendValueInput("DISTANCE")
        .setCheck(null)
        .appendField("move backward by");
    this.setPreviousStatement(true);
    this.setInputsInline(true);
    this.setNextStatement(true);
    this.setOutput(false);
    this.setColour(180);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_backward'] = function(block) {
  var turtle = Blockly.Python.valueToCode(block, 'TURTLE', Blockly.Python.ORDER_ATOMIC);
  var distance = Blockly.Python.valueToCode(block, 'DISTANCE', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble Python into code variable.
  var code = turtle+'.backward('+distance+')\n';
  return code;
};
PythonToBlocks.KNOWN_ATTR_FUNCTIONS['backward'] = function(func, args, keywords, starargs, kwargs, node) {
    if (args.length != 1) {
        throw new Error("Incorrect number of arguments to turtle.backward!");
    }
    return [block("turtle_backward", func.lineno, {}, { 
                    "DISTANCE": this.convert(args[0]),
                    "TURTLE": this.convert(func.value)
                }, {"inline": "true"})];
}

Blockly.Blocks['turtle_left'] = {
  init: function() {
    this.appendValueInput("TURTLE")
        .setCheck("Turtle")
        .appendField("make turtle");
    this.appendValueInput("ANGLE")
        .setCheck(null)
        .appendField("turn left by");
    this.setPreviousStatement(true);
    this.setNextStatement(true);
    this.setInputsInline(true);
    this.setOutput(false);
    this.setColour(180);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_left'] = function(block) {
  var turtle = Blockly.Python.valueToCode(block, 'TURTLE', Blockly.Python.ORDER_ATOMIC);
  var angle = Blockly.Python.valueToCode(block, 'ANGLE', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble Python into code variable.
  var code = turtle+'.left('+angle+')\n';
  return code;
};
PythonToBlocks.KNOWN_ATTR_FUNCTIONS['left'] = function(func, args, keywords, starargs, kwargs, node) {
    if (args.length != 1) {
        throw new Error("Incorrect number of arguments to turtle.left!");
    }
    return [block("turtle_left", func.lineno, {}, { 
                    "ANGLE": this.convert(args[0]),
                    "TURTLE": this.convert(func.value)
                }, {"inline": "true"})];
}

Blockly.Blocks['turtle_right'] = {
  init: function() {
    this.appendValueInput("TURTLE")
        .setCheck("Turtle")
        .appendField("make turtle");
    this.appendValueInput("ANGLE")
        .setCheck(null)
        .appendField("turn right by");
    this.setPreviousStatement(true);
    this.setNextStatement(true);
    this.setInputsInline(true);
    this.setOutput(false);
    this.setColour(180);
    this.setTooltip('');
    this.setHelpUrl('');
  }
};
Blockly.Python['turtle_right'] = function(block) {
  var turtle = Blockly.Python.valueToCode(block, 'TURTLE', Blockly.Python.ORDER_ATOMIC);
  var angle = Blockly.Python.valueToCode(block, 'ANGLE', Blockly.Python.ORDER_ATOMIC);
  // TODO: Assemble Python into code variable.
  var code = turtle+'.right('+angle+')\n';
  return code;
};
PythonToBlocks.KNOWN_ATTR_FUNCTIONS['right'] = function(func, args, keywords, starargs, kwargs, node) {
    if (args.length != 1) {
        throw new Error("Incorrect number of arguments to turtle.right!");
    }
    return [block("turtle_right", func.lineno, {}, { 
                    "ANGLE": this.convert(args[0]),
                    "TURTLE": this.convert(func.value)
                }, {"inline": "true"})];
}</code></pre>
        </article>
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