Add sha3

src/opcodes/index.ts

@@ -23,6 +23,7 @@ import revert from "./revert";
 import selfdestruct from "./selfdestruct";
 import sload from "./sload";
 import sstore from "./sstore";
+import sha3 from "./sha3";
 import staticcall from "./staticcall";
 
 export function parse(
@@ -56,6 +57,8 @@ export function parse(
       return sload.parse(step);
     case "SSTORE":
       return sstore.parse(step);
+    case "SHA3":
+      return sha3.parse(step);
     case "REVERT":
       return revert.parse(step);
     default:
@@ -100,6 +103,8 @@ export async function format(
       return sload.format(item);
     case "SSTORE":
       return sstore.format(item);
+    case "SHA3":
+      return sha3.format(item);
     case "REVERT":
       return revert.format(item, dependencies);
     case "SELFDESTRUCT":

src/opcodes/sha3.ts

@@ -0,0 +1,49 @@
+import { InterpreterStep } from "@nomicfoundation/ethereumjs-evm";
+
+import { AwaitedItem, Item } from "../types";
+import {
+  colorKey,
+  colorLabel,
+  colorValue,
+  parseBytes32,
+  parseNumber,
+} from "../utils";
+
+export interface SHA3 {
+  offset: number;
+  size: number;
+  data: string;
+  hash: string;
+}
+
+function parse(step: InterpreterStep): AwaitedItem<SHA3> {
+  const offset = parseNumber(step.stack[step.stack.length - 1].toString(16));
+  const size = parseNumber(step.stack[step.stack.length - 2].toString(16));
+  const data = step.memory.slice(offset, offset + size).toString("hex");
+
+  const next = 1; // get stack just after this opcode
+  return {
+    isAwaitedItem: true,
+    next,
+    parse: (stepNext: InterpreterStep) => ({
+      opcode: "SHA3",
+      params: {
+        offset,
+        size,
+        data,
+        hash: parseBytes32(stepNext.stack[step.stack.length - 1].toString(16)),
+      },
+      format(): string {
+        return format(this);
+      },
+    }),
+  };
+}
+
+function format(item: Item<SHA3>): string {
+  return `${colorLabel("[SHA3]")} ${colorKey(item.params.data)} → ${colorValue(
+    item.params.hash
+  )}`;
+}
+
+export default { parse, format };