w3bstream-assemblyscript-sdk v0.1.2

w3bstream wasm assemblyscript sdk

This is the official assemblyscript sdk for w3bstream.

Installation

npm install w3bstream-assemblyscript-sdk

Usage

Frist you need to export alloc and abort from your applet.ts to the global scope

Export alloc for w3bstream vm and export abort for assemblyScript special use

applet.ts

/**Export start function for w3bstream */
export function start(rid: i32): i32 {
    /*Your main code here.*/
}

/**Export alloc for w3bstream vm */
export function alloc(size: usize): usize {
  return heap.alloc(size);
}

/** Export abort for assemblyScript special use
 * @doc: https://www.assemblyscript.org/concepts.html#special-imports
 */
function abort(
  message: string | null,
  fileName: string | null,
  lineNumber: u32,
  columnNumber: u32
): void {}

Log

Log(message: string)

import { sdk } from "w3bstream-assemblyscript-sdk";

export function start(rid: i32): i32 {
  sdk.Log("Start from assemblyscript");
  const message = GetDataByRID(rid);
  sdk.Log("wasm received message:" + message);
  return 0;
}

SendTx

SendTx(tx: string)

import { sdk } from "w3bstream-assemblyscript-sdk";

export function start(rid: i32): i32 { const ERC20Addr = 0xb73eE6EB5b1984c78CCcC49eA7Ad773E71d74F51; const account = 9117f5EF4156709092f79740a97b1638cA399A00; sdk.SendTx({ "to": "${ERC20Addr}", "value": "0", "data": "40c10f19000000000000000000000000${account}0000000000000000000000000000000000000000000000000de0b6b3a7640000" }); return 0; }

### GetDB & SetDB
> SetDB(key: string, value: i32)

> GetDB(key: string)
```typescript
import { sdk } from "w3bstream-assemblyscript-sdk";

export function start(rid: i32): i32 {
  sdk.SetDB("wordCount", word.length);
  let value = sdk.GetDB("wordCount");
  sdk.Log("wasm get value:" + value.toString());
  return 0;
}

More examples

https://github.com/machinefi/w3bstream_compilets_demo