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system/node_modules/ethers/src.ts/abi/coders/fixed-bytes.ts

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+
+import { defineProperties, getBytesCopy, hexlify } from "../../utils/index.js";
+
+import { Typed } from "../typed.js";
+import { Coder } from "./abstract-coder.js";
+
+import type { BytesLike } from "../../utils/index.js";
+
+import type { Reader, Writer } from "./abstract-coder.js";
+
+
+/**
+ *  @_ignore
+ */
+export class FixedBytesCoder extends Coder {
+    readonly size!: number;
+
+    constructor(size: number, localName: string) {
+        let name = "bytes" + String(size);
+        super(name, name, localName, false);
+        defineProperties<FixedBytesCoder>(this, { size }, { size: "number" });
+    }
+
+    defaultValue(): string {
+        return ("0x0000000000000000000000000000000000000000000000000000000000000000").substring(0, 2 + this.size * 2);
+    }
+
+    encode(writer: Writer, _value: BytesLike | Typed): number {
+        let data = getBytesCopy(Typed.dereference(_value, this.type));
+        if (data.length !== this.size) { this._throwError("incorrect data length", _value); }
+        return writer.writeBytes(data);
+    }
+
+    decode(reader: Reader): any {
+        return hexlify(reader.readBytes(this.size));
+    }
+}