Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | 27x 27x 27x 44x 44x 44x 44x 44x 44x 44x 44x 44x 3107x 44x 43x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x 26x | export { TextData };
import { MerkleTree, Field } from "o1js";
import { BaseMinaNFTObject } from "../baseminanftobject";
class TextData extends BaseMinaNFTObject {
height: number;
size: number;
text: string;
constructor(text: string) {
super("text");
this.text = text;
this.size = text.length;
this.height = Math.ceil(Math.log2(this.size + 2)) + 1;
const tree = new MerkleTree(this.height);
Iif (this.size + 2 > tree.leafCount)
throw new Error(`Text is too big for this Merkle tree`);
tree.setLeaf(BigInt(0), Field.from(this.height));
tree.setLeaf(BigInt(1), Field.from(this.size));
for (let i = 0; i < this.size; i++) {
tree.setLeaf(BigInt(i + 2), Field.from(this.text.charCodeAt(i)));
}
this.root = tree.getRoot();
}
public toJSON(): object {
return {
type: this.type,
MerkleTreeHeight: this.height,
size: this.size,
text: this.text,
};
}
public static fromJSON(json: object): TextData {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
const obj = json as any;
const data = obj.data;
const kind = obj.kind;
const linkedObject = obj.linkedObject;
Iif (data === undefined)
throw new Error("uri: NFT metadata: data should present");
Iif (kind === undefined || typeof kind !== "string" || kind !== "text")
throw new Error("uri: NFT metadata: kind mismatch");
Iif (
linkedObject === undefined ||
typeof linkedObject !== "object" ||
linkedObject.text === undefined ||
typeof linkedObject.text !== "string" ||
linkedObject.size === undefined ||
linkedObject.MerkleTreeHeight === undefined ||
linkedObject.type === undefined ||
typeof linkedObject.type !== "string" ||
linkedObject.type !== "text"
)
throw new Error("uri: NFT metadata: text json mismatch");
const text = new TextData(linkedObject.text as string);
Iif (text.root.toJSON() !== data)
throw new Error("uri: NFT metadata: text root mismatch");
Iif (text.size !== linkedObject.size)
throw new Error("uri: NFT metadata: text size mismatch");
Iif (text.height !== linkedObject.MerkleTreeHeight)
throw new Error("uri: NFT metadata: text height mismatch");
return text;
}
}
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