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/* tslint:disable max-classes-per-file */
import { DataItem, MethodAbi } from 'ethereum-types';
import * as _ from 'lodash';
import { generateDataItemFromSignature } from './utils/signature_parser';
import { DataType } from './abstract_data_types/data_type';
import { DataTypeFactory } from './abstract_data_types/interfaces';
import { AddressDataType } from './evm_data_types/address';
import { ArrayDataType } from './evm_data_types/array';
import { BoolDataType } from './evm_data_types/bool';
import { DynamicBytesDataType } from './evm_data_types/dynamic_bytes';
import { IntDataType } from './evm_data_types/int';
import { MethodDataType } from './evm_data_types/method';
import { PointerDataType } from './evm_data_types/pointer';
import { StaticBytesDataType } from './evm_data_types/static_bytes';
import { StringDataType } from './evm_data_types/string';
import { TupleDataType } from './evm_data_types/tuple';
import { UIntDataType } from './evm_data_types/uint';
export class Address extends AddressDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class Bool extends BoolDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class Int extends IntDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class UInt extends UIntDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class StaticBytes extends StaticBytesDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class DynamicBytes extends DynamicBytesDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class String extends StringDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class Pointer extends PointerDataType {
public constructor(destDataType: DataType, parentDataType: DataType) {
super(destDataType, parentDataType, EvmDataTypeFactory.getInstance());
}
}
export class Tuple extends TupleDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class Array extends ArrayDataType {
public constructor(dataItem: DataItem) {
super(dataItem, EvmDataTypeFactory.getInstance());
}
}
export class Method extends MethodDataType {
public constructor(abi: MethodAbi) {
super(abi, EvmDataTypeFactory.getInstance());
}
}
/* tslint:disable no-construct */
export class EvmDataTypeFactory implements DataTypeFactory {
private static _instance: DataTypeFactory;
public static getInstance(): DataTypeFactory {
if (!EvmDataTypeFactory._instance) {
EvmDataTypeFactory._instance = new EvmDataTypeFactory();
}
return EvmDataTypeFactory._instance;
}
/* tslint:disable prefer-function-over-method */
public create(dataItem: DataItem, parentDataType?: DataType): DataType {
// Create data type
let dataType: undefined | DataType;
if (Array.matchType(dataItem.type)) {
dataType = new Array(dataItem);
} else if (Address.matchType(dataItem.type)) {
dataType = new Address(dataItem);
} else if (Bool.matchType(dataItem.type)) {
dataType = new Bool(dataItem);
} else if (Int.matchType(dataItem.type)) {
dataType = new Int(dataItem);
} else if (UInt.matchType(dataItem.type)) {
dataType = new UInt(dataItem);
} else if (StaticBytes.matchType(dataItem.type)) {
dataType = new StaticBytes(dataItem);
} else if (Tuple.matchType(dataItem.type)) {
dataType = new Tuple(dataItem);
} else if (DynamicBytes.matchType(dataItem.type)) {
dataType = new DynamicBytes(dataItem);
} else if (String.matchType(dataItem.type)) {
dataType = new String(dataItem);
}
// @TODO: DataTypeement Fixed/UFixed types
if (_.isUndefined(dataType)) {
throw new Error(`Unrecognized data type: '${dataItem.type}'`);
} else if (!_.isUndefined(parentDataType) && !dataType.isStatic()) {
const pointerToDataType = new Pointer(dataType, parentDataType);
return pointerToDataType;
}
return dataType;
}
/* tslint:enable prefer-function-over-method */
private constructor() {}
}
/**
* Convenience function for creating a DataType from different inputs.
* @param input A single or set of DataItem or a signature for an EVM data type.
* @return DataType corresponding to input.
*/
export function create(input: DataItem | DataItem[] | string): DataType {
const dataItem = consolidateDataItemsIntoSingle(input);
const dataType = EvmDataTypeFactory.getInstance().create(dataItem);
return dataType;
}
/**
* Convenience function to aggregate a single input or a set of inputs into a single DataItem.
* An array of data items is grouped into a single tuple.
* @param input A single data item; a set of data items; a signature.
* @return A single data item corresponding to input.
*/
function consolidateDataItemsIntoSingle(input: DataItem | DataItem[] | string): DataItem {
let dataItem: DataItem;
if (_.isArray(input)) {
const dataItems = input as DataItem[];
dataItem = {
name: '',
type: 'tuple',
components: dataItems,
};
} else {
dataItem = typeof input === 'string' ? generateDataItemFromSignature(input) : (input as DataItem);
}
return dataItem;
}
/**
* Convenience function for creating a Method encoder from different inputs.
* @param methodName name of method.
* @param input A single data item; a set of data items; a signature; or an array of signatures (optional).
* @param output A single data item; a set of data items; a signature; or an array of signatures (optional).
* @return Method corresponding to input.
*/
export function createMethod(
methodName: string,
input?: DataItem | DataItem[] | string | string[],
output?: DataItem | DataItem[] | string | string[],
): Method {
const methodInput = _.isUndefined(input) ? [] : consolidateDataItemsIntoArray(input);
const methodOutput = _.isUndefined(output) ? [] : consolidateDataItemsIntoArray(output);
const methodAbi: MethodAbi = {
name: methodName,
inputs: methodInput,
outputs: methodOutput,
type: 'function',
// default fields not used by ABI
constant: false,
payable: false,
stateMutability: 'nonpayable',
};
const dataType = new Method(methodAbi);
return dataType;
}
/**
* Convenience function that aggregates a single input or a set of inputs into an array of DataItems.
* @param input A single data item; a set of data items; a signature; or an array of signatures.
* @return Array of data items corresponding to input.
*/
function consolidateDataItemsIntoArray(input: DataItem | DataItem[] | string | string[]): DataItem[] {
let dataItems: DataItem[];
if (_.isArray(input) && _.isEmpty(input)) {
dataItems = [];
} else if (_.isArray(input) && typeof input[0] === 'string') {
dataItems = [];
_.each(input as string[], (signature: string) => {
const dataItem = generateDataItemFromSignature(signature);
dataItems.push(dataItem);
});
} else if (_.isArray(input)) {
dataItems = input as DataItem[];
} else if (typeof input === 'string') {
const dataItem = generateDataItemFromSignature(input);
dataItems = [dataItem];
} else {
dataItems = [input as DataItem];
}
return dataItems;
}
/* tslint:enable no-construct */
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