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Add initial implementation of extension serialization/deserialization

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This commit is contained in:
Connor Hudson 2018-06-18 15:00:33 -04:00
parent cda47fb3a7
commit aa16930e34
1 changed files with 13 additions and 2 deletions
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15
src/serialization/sb3.js
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@ -272,14 +272,20 @@ const compressInputTree = function (block, blocks) {
* Serialize the given blocks object (representing all the blocks for the target
* currently being serialized.)
* @param {object} blocks The blocks to be serialized
* @param {Set} extensionIDs Set of extension ids
* @return {object} The serialized blocks with compressed inputs and compressed
* primitives.
*/
const serializeBlocks = function (blocks) {
const serializeBlocks = function (blocks, extensionIDs) {
const obj = Object.create(null);
for (const blockID in blocks) {
if (!blocks.hasOwnProperty(blockID)) continue;
obj[blockID] = serializeBlock(blocks[blockID], blocks);
const index = blocks[blockID].opcode.indexOf('_');
const prefix = blocks[blockID].opcode.substring(0, index);
if (CORE_EXTENSIONS.indexOf(prefix) === -1) {
if (prefix !== '') extensionIDs.add(prefix);
}
}
// once we have completed a first pass, do a second pass on block inputs
for (const blockID in obj) {
@ -416,13 +422,15 @@ const serializeComments = function (comments) {
*/
const serializeTarget = function (target) {
const obj = Object.create(null);
const extensionIDs = new Set();
obj.isStage = target.isStage;
obj.name = obj.isStage ? 'Stage' : target.name;
const vars = serializeVariables(target.variables);
obj.variables = vars.variables;
obj.lists = vars.lists;
obj.broadcasts = vars.broadcasts;
obj.blocks = serializeBlocks(target.blocks);
obj.blocks = serializeBlocks(target.blocks, extensionIDs);
obj.extensions = Array.from(extensionIDs);
obj.comments = serializeComments(target.comments);
obj.currentCostume = target.currentCostume;
obj.costumes = target.costumes.map(serializeCostume);
@ -901,6 +909,9 @@ const parseScratchObject = function (object, runtime, extensions, zip) {
if (object.hasOwnProperty('isStage')) {
target.isStage = object.isStage;
}
if (object.hasOwnProperty('extensions')) {
target.extensions = object.extensions;
}
Promise.all(costumePromises).then(costumes => {
sprite.costumes = costumes;
});