Method implementation

lib/component/agent/structs/method.js:133–156

Replaces the body of this method.

(block)

    /** Replaces the body of this method. */
    set implementation(block) {
        const startIndex = +!this.isStatic | +Il2Cpp.unityVersionIsBelow201830;
        const callback = (...args) => {
            const parameters = this.parameters.map((e, i) => utils_2.fromFridaValue(args[i + startIndex], e.type));
            return utils_2.toFridaValue(block.call(this.isStatic ? this.class : new Il2Cpp.Object(args[0]), ...parameters));
        };
        try {
            this.revert();
            Interceptor.replace(this.virtualAddress, new NativeCallback(callback, this.returnType.fridaAlias, this.fridaSignature));
        } catch (e) {
            switch (e.message) {
                case "access violation accessing 0x0":
                    console.raise(`cannot implement method ${this.name}: it has a NULL virtual address`);
                case `unable to intercept function at ${this.virtualAddress}; please file a bug`:
                    console.warn(`cannot implement method ${this.name}: it may be a thunk`);
                    break;
                case "already replaced this function":
                    console.warn(`cannot implement method ${this.name}: already replaced by a thunk`);
                    break;
                default:
                    throw e;
            }
        }
    }

    /** Creates a generic instance of the current generic method. */
    inflate(...classes) {