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Implement additional builtins: array_length, sha256_string, concat_strings (#130)

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Pavel
2022-02-17 13:24:26 +03:00
committed by GitHub
parent d860ea6dec
commit 25f63f0b0d
4 changed files with 51 additions and 11 deletions
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34
src/internal/builtins/common.ts
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@ -16,9 +16,9 @@
import { CallServiceResult } from '@fluencelabs/avm-runner-interface';
import { encode, decode } from 'bs58';
import { PeerIdB58 } from 'src';
import { GenericCallServiceHandler, ResultCodes } from '../commonTypes';
import { KeyPair } from '../KeyPair';
import { sha256 } from 'multiformats/hashes/sha2';
import { ResultCodes } from '../commonTypes';
import Buffer from '../Buffer';
const success = (result: any): CallServiceResult => {
return {
@ -44,6 +44,14 @@ export const builtInServices = {
return success(req.args);
},
array_length: (req) => {
if (req.args.length !== 1) {
return error('array_length accepts exactly one argument, found: ' + req.args.length);
} else {
return success(req.args[0].length);
}
},
identity: (req) => {
if (req.args.length > 1) {
return error(`identity accepts up to 1 arguments, received ${req.args.length} arguments`);
@ -98,6 +106,26 @@ export const builtInServices = {
return success(Array.from(decode(req.args[0])));
}
},
sha256_string: async (req) => {
if (req.args.length < 1 || req.args.length > 3) {
return error('sha256_string accepts 1-3 arguments, found: ' + req.args.length);
} else {
const [input, digestOnly, asBytes] = req.args;
const inBuffer = Buffer.from(input);
const multihash = await sha256.digest(inBuffer);
const outBytes = digestOnly ? multihash.digest : multihash.bytes;
const res = asBytes ? Array.from(outBytes) : encode(outBytes);
return success(res);
}
},
concat_strings: (req) => {
const res = ''.concat(...req.args);
return success(res);
},
},
peer: {