{
    "BLOCKPLUGINS": [
        [
            "push", 
            "var pushBlk = new ProtoBlock('push');pushBlk.palette = palettes.dict['extras'];blocks.protoBlockDict['push'] = pushBlk;pushBlk.staticLabels.push(_('push'));pushBlk.adjustWidthToLabel();pushBlk.oneArgBlock();pushBlk.dockTypes[1] = 'anyin';"
        ], 
        [
            "pop", 
            "var popBlk = new ProtoBlock('pop');popBlk.palette = palettes.dict['extras'];blocks.protoBlockDict['pop'] = popBlk;popBlk.staticLabels.push(_('pop'));popBlk.adjustWidthToLabel();popBlk.parameterBlock();"
        ], 
        [
            "showHeap", 
            "var showHeap = new ProtoBlock('showHeap');showHeap.palette = palettes.dict['extras'];blocks.protoBlockDict['showHeap'] = showHeap;showHeap.staticLabels.push(_('show heap'));showHeap.adjustWidthToLabel();showHeap.zeroArgBlock();"
        ], 
        [
            "heapEmpty", 
            "var heapEmpty = new ProtoBlock('heapEmpty');heapEmpty.palette = palettes.dict['extras'];blocks.protoBlockDict['heapEmpty'] = heapEmpty;heapEmpty.staticLabels.push(_('heap empty?'));heapEmpty.adjustWidthToLabel();heapEmpty.booleanZeroArgBlock();"
        ], 
        [
            "emptyHeap", 
            "var emptyHeap = new ProtoBlock('emptyHeap');emptyHeap.palette = palettes.dict['extras'];blocks.protoBlockDict['emptyHeap'] = emptyHeap;emptyHeap.staticLabels.push(_('empty heap'));emptyHeap.adjustWidthToLabel();emptyHeap.zeroArgBlock();"
        ], 
        [
            "saveHeap", 
            "var saveHeap = new ProtoBlock('saveHeap');saveHeap.palette = palettes.dict['extras'];blocks.protoBlockDict['saveHeap'] = saveHeap;saveHeap.staticLabels.push(_('save heap'));saveHeap.adjustWidthToLabel();saveHeap.oneArgBlock();saveHeap.defaults.push('heap.json');saveHeap.dockTypes[1] = 'textin';"
        ], 
        [
            "loadHeap", 
            "var loadHeap = new ProtoBlock('loadHeap');loadHeap.palette = palettes.dict['extras'];blocks.protoBlockDict['loadHeap'] = loadHeap;loadHeap.staticLabels.push(_('load heap'));loadHeap.adjustWidthToLabel();loadHeap.oneArgBlock();loadHeap.dockTypes[1] = 'filein';loadHeap.defaults = [[null, null]];"
        ]
    ], 
    "GLOBALS": "turtleHeaps = {};", 
    "ARGPLUGINS": [
        [
            "pop", 
            "var block = logo.blocks.blockList[blk];if (turtle in turtleHeaps && turtleHeaps[turtle].length > 0) {    block.value = turtleHeaps[turtle].pop();} else {    logo.errorMsg(_('empty heap'));    block.value = null;}"
        ], 
        [
            "heapEmpty", 
            "var block = logo.blocks.blockList[blk];if (turtle in turtleHeaps) {    block.value = (turtleHeaps[turtle].length == 0);} else {    block.value = true;}"
        ]
    ], 
    "FLOWPLUGINS": [
        [
            "showHeap", 
            "var block = logo.blocks.blockList[blk];logo.textMsg(JSON.stringify(turtleHeaps[turtle]));"
        ], 
        [
            "emptyHeap", 
            "turtleHeaps[turtle] = [];"
        ], 
        [
            "push", 
            "var block = logo.blocks.blockList[blk];var conns = block.connections;var arg = logo.parseArg(logo, turtle, conns[1]);if (!(turtle in turtleHeaps)) {    turtleHeaps[turtle] = [];}turtleHeaps[turtle].push(arg);"
        ], 
        [
            "saveHeap", 
            "function downloadFile(filename, mimetype, content) {    var download = document.createElement('a');    download.setAttribute('href', 'data:' + mimetype + ';charset=utf-8,' + content);    download.setAttribute('download', filename);    document.body.appendChild(download);    download.click();    document.body.removeChild(download);};var block = logo.blocks.blockList[blk];var conns = block.connections;var arg = logo.parseArg(logo, turtle, conns[1]);if (arg && turtle in turtleHeaps) {    downloadFile(arg, 'text/json', JSON.stringify(turtleHeaps[turtle]));};"
        ], 
        [
            "loadHeap", 
            "var block = logo.blocks.blockList[blk];var conns = block.connections;var arg = logo.parseArg(logo, turtle, conns[1]);if (turtle in turtleHeaps) {    var oldHeap = turtleHeaps[turtle];} else {    var oldHeap = [];}if (blocks.blockList[conns[1]].name == 'loadFile') {    if (!arg) {        logo.errorMsg(_('You need to select a file.'));    }    else {        if (arg.length != 2) {            logo.errorMsg(_('You need to select a file.'));        }        else {            try {                turtleHeaps[turtle] = JSON.parse(arg[1]);                if (!Array.isArray(turtleHeaps[turtle])) {                    throw 'is not array';                }            }            catch (e) {                turtleHeaps[turtle] = oldHeap;                logo.errorMsg(_('The file you selected does not contain a valid heap.'));            }        }    }}else {    logo.errorMsg(_('The loadHeap block needs a loadFile block.'))};"
        ]
    ]
}