340 lines
8.9 KiB
TypeScript
340 lines
8.9 KiB
TypeScript
"use strict";
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//import { version } from "./_version";
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const version = "@TODO";
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///////////////////
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// Generic Errors
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// Unknown Error
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export const UNKNOWN_ERROR = "UNKNOWN_ERROR";
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// Not Implemented
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export const NOT_IMPLEMENTED = "NOT_IMPLEMENTED";
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// Unsupported Operation
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// - operation
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export const UNSUPPORTED_OPERATION = "UNSUPPORTED_OPERATION";
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// Network Error
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export const NETWORK_ERROR = "NETWORK_ERROR";
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///////////////////
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// Operational Errors
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// Buffer Overrun
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export const BUFFER_OVERRUN = "BUFFER_OVERRUN";
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// Numeric Fault
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// - operation: the operation being executed
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// - fault: the reason this faulted
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export const NUMERIC_FAULT = "NUMERIC_FAULT";
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///////////////////
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// Argument Errors
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// Missing new operator to an object
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// - name: The name of the class
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export const MISSING_NEW = "MISSING_NEW";
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// Invalid argument (e.g. value is incompatible with type) to a function:
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// - argument: The argument name that was invalid
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// - value: The value of the argument
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export const INVALID_ARGUMENT = "INVALID_ARGUMENT";
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// Missing argument to a function:
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// - count: The number of arguments received
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// - expectedCount: The number of arguments expected
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export const MISSING_ARGUMENT = "MISSING_ARGUMENT";
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// Too many arguments
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// - count: The number of arguments received
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// - expectedCount: The number of arguments expected
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export const UNEXPECTED_ARGUMENT = "UNEXPECTED_ARGUMENT";
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///////////////////
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// Blockchain Errors
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// Call exception
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// - transaction: the transaction
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// - address?: the contract address
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// - args?: The arguments passed into the function
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// - method?: The Solidity method signature
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// - errorSignature?: The EIP848 error signature
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// - errorArgs?: The EIP848 error parameters
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// - reason: The reason (only for EIP848 "Error(string)")
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export const CALL_EXCEPTION = "CALL_EXCEPTION";
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// Insufficien funds (< value + gasLimit * gasPrice)
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// - transaction: the transaction attempted
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export const INSUFFICIENT_FUNDS = "INSUFFICIENT_FUNDS";
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// Nonce has already been used
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// - transaction: the transaction attempted
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export const NONCE_EXPIRED = "NONCE_EXPIRED";
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// The replacement fee for the transaction is too low
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// - transaction: the transaction attempted
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export const REPLACEMENT_UNDERPRICED = "REPLACEMENT_UNDERPRICED";
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// The gas limit could not be estimated
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// - transaction: the transaction passed to estimateGas
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export const UNPREDICTABLE_GAS_LIMIT = "UNPREDICTABLE_GAS_LIMIT";
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//export const errors: { [ code: string ]: string } = {
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//};
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///////////////////
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// Censorship
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let _permanentCensorErrors = false;
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let _censorErrors = false;
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export function setCensorship(censorship: boolean, permanent?: boolean): void {
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if (_permanentCensorErrors) {
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throwError("error censorship permanent", UNSUPPORTED_OPERATION, { operation: "setCensorship" });
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}
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_censorErrors = !!censorship;
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_permanentCensorErrors = !!permanent;
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}
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///////////////////
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// Errors
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export function makeError(message: string, code: string, params: any): Error {
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if (_censorErrors) {
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return new Error("unknown error");
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}
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if (!code) { code = UNKNOWN_ERROR; }
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if (!params) { params = {}; }
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let messageDetails: Array<string> = [];
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Object.keys(params).forEach((key) => {
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try {
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messageDetails.push(key + "=" + JSON.stringify(params[key]));
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} catch (error) {
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messageDetails.push(key + "=" + JSON.stringify(params[key].toString()));
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}
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});
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messageDetails.push("version=" + version);
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let reason = message;
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if (messageDetails.length) {
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message += " (" + messageDetails.join(", ") + ")";
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}
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// @TODO: Any??
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let error: any = new Error(message);
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error.reason = reason;
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error.code = code
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Object.keys(params).forEach(function(key) {
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error[key] = params[key];
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});
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return error;
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}
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// @TODO: Enum
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export function throwError(message: string, code: string, params: any): never {
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throw makeError(message, code, params);
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}
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export function throwArgumentError(message: string, name: string, value: any): never {
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return throwError(message, INVALID_ARGUMENT, {
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argument: name,
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value: value
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});
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}
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///////////////////
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// Checking
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export function checkArgumentCount(count: number, expectedCount: number, suffix?: string): void {
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if (suffix) {
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suffix = " " + suffix;
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} else {
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suffix = "";
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}
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if (count < expectedCount) {
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throwError("missing argument" + suffix, MISSING_ARGUMENT, { count: count, expectedCount: expectedCount });
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}
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if (count > expectedCount) {
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throwError("too many arguments" + suffix, UNEXPECTED_ARGUMENT, { count: count, expectedCount: expectedCount });
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}
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}
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export function checkNew(target: any, kind: any): void {
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if (target === Object || target == null) {
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throwError("missing new", MISSING_NEW, { name: kind.name });
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}
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}
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/*
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export function check(target: any: void {
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if (target === Object || target == null) {
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throwError("missing new", MISSING_NEW, { name: kind.name });
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}
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}
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*/
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export function checkAbstract(target: any, kind: any): void {
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if (target === kind) {
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throwError(
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"cannot instantiate abstract class " + JSON.stringify(kind.name) + " directly; use a sub-class",
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UNSUPPORTED_OPERATION,
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{ name: target.name, operation: "new" }
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);
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} else if (target === Object || target == null) {
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throwError("missing new", MISSING_NEW, { name: kind.name });
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}
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}
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/*
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export function checkTarget(target: any, kind: any): void {
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if (target == null) {
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throwError("missing new", MISSING_NEW, { name: kind.name });
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}
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}
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*/
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function _checkNormalize(): string {
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try {
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let missing: Array<string> = [ ];
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// Make sure all forms of normalization are supported
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["NFD", "NFC", "NFKD", "NFKC"].forEach((form) => {
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try {
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"test".normalize(form);
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} catch(error) {
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missing.push(form);
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}
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});
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if (missing.length) {
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throw new Error("missing " + missing.join(", "));
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}
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if (String.fromCharCode(0xe9).normalize("NFD") !== String.fromCharCode(0x65, 0x0301)) {
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throw new Error("broken implementation")
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}
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} catch (error) {
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return error.message;
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}
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return null;
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}
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let _normalizeError = _checkNormalize();
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export function checkNormalize(): void {
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if (_normalizeError) {
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throwError("platform missing String.prototype.normalize", UNSUPPORTED_OPERATION, {
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operation: "String.prototype.normalize", form: _normalizeError
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});
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}
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}
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export function checkSafeUint53(value: number, message?: string): void {
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if (typeof(value) !== "number") { return; }
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if (message == null) { message = "value not safe"; }
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if (value < 0 || value >= 0x1fffffffffffff) {
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throwError(message, NUMERIC_FAULT, {
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operation: "checkSafeInteger",
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fault: "out-of-safe-range",
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value: value
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});
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}
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if (value % 1) {
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throwError(message, NUMERIC_FAULT, {
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operation: "checkSafeInteger",
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fault: "non-integer",
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value: value
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});
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}
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}
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///////////////////
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// Logging
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const LogLevels: { [ name: string ]: number } = { debug: 1, "default": 2, info: 2, warn: 3, error: 4, off: 5 };
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let LogLevel = LogLevels["default"];
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export function setLogLevel(logLevel: string): void {
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let level = LogLevels[logLevel];
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if (level == null) {
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warn("invliad log level - " + logLevel);
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return;
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}
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LogLevel = level;
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}
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function log(logLevel: string, args: Array<any>): void {
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if (LogLevel > LogLevels[logLevel]) { return; }
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console.log.apply(console, args);
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}
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export function warn(...args: Array<any>): void {
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log("warn", args);
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}
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export function info(...args: Array<any>): void {
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log("info", args);
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}
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/*
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export class Logger {
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readonly version: string;
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_logLevel: number;
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constructor(version?: string) {
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Object.defineProperty(this, "version", {
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enumerable: true,
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value: (version || "unknown"),
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writable: false
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});
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this._logLevel = LogLevels["default"];;
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}
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_log(logLevel: string, args: Array<any>): void {
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if (this._logLevel > LogLevels[logLevel]) { return; }
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console.log.apply(console, args);
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}
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get logLevel(): number {
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return this._logLevel;
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}
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set logLevel(value: string | number) {
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if (typeof(value) === "string") {
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value = LogLevels[value];
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if (logLevel == null) {
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this.warn("invliad log level - " + value);
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return;
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}
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}
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this._logLevel = value;
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}
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warn(...args: Array<any>): void {
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this._log("warn", args);
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}
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log(...args: Array<any>): void {
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this._log("info", args);
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}
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}
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*/
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