943 lines
33 KiB
JavaScript
943 lines
33 KiB
JavaScript
/**
|
|
* About frgaments...
|
|
*
|
|
* @_subsection api/abi/abi-coder:Fragments
|
|
*/
|
|
import { defineProperties, getBigInt, getNumber, assert, assertPrivate, assertArgument } from "../utils/index.js";
|
|
import { id } from "../hash/index.js";
|
|
;
|
|
// [ "a", "b" ] => { "a": 1, "b": 1 }
|
|
function setify(items) {
|
|
const result = new Set();
|
|
items.forEach((k) => result.add(k));
|
|
return Object.freeze(result);
|
|
}
|
|
// Visibility Keywords
|
|
const _kwVisib = "constant external internal payable private public pure view";
|
|
const KwVisib = setify(_kwVisib.split(" "));
|
|
const _kwTypes = "constructor error event function struct";
|
|
const KwTypes = setify(_kwTypes.split(" "));
|
|
const _kwModifiers = "calldata memory storage payable indexed";
|
|
const KwModifiers = setify(_kwModifiers.split(" "));
|
|
const _kwOther = "tuple returns";
|
|
// All Keywords
|
|
const _keywords = [_kwTypes, _kwModifiers, _kwOther, _kwVisib].join(" ");
|
|
const Keywords = setify(_keywords.split(" "));
|
|
// Single character tokens
|
|
const SimpleTokens = {
|
|
"(": "OPEN_PAREN", ")": "CLOSE_PAREN",
|
|
"[": "OPEN_BRACKET", "]": "CLOSE_BRACKET",
|
|
",": "COMMA", "@": "AT"
|
|
};
|
|
// Parser regexes to consume the next token
|
|
const regexWhitespace = new RegExp("^(\\s*)");
|
|
const regexNumber = new RegExp("^([0-9]+)");
|
|
const regexIdentifier = new RegExp("^([a-zA-Z$_][a-zA-Z0-9$_]*)");
|
|
const regexType = new RegExp("^(address|bool|bytes([0-9]*)|string|u?int([0-9]*))");
|
|
class TokenString {
|
|
#offset;
|
|
#tokens;
|
|
get offset() { return this.#offset; }
|
|
get length() { return this.#tokens.length - this.#offset; }
|
|
constructor(tokens) {
|
|
this.#offset = 0;
|
|
this.#tokens = tokens.slice();
|
|
}
|
|
clone() { return new TokenString(this.#tokens); }
|
|
reset() { this.#offset = 0; }
|
|
#subTokenString(from = 0, to = 0) {
|
|
return new TokenString(this.#tokens.slice(from, to).map((t) => {
|
|
return Object.freeze(Object.assign({}, t, {
|
|
match: (t.match - from),
|
|
linkBack: (t.linkBack - from),
|
|
linkNext: (t.linkNext - from),
|
|
}));
|
|
return t;
|
|
}));
|
|
}
|
|
// Pops and returns the value of the next token, if it is a keyword in allowed; throws if out of tokens
|
|
popKeyword(allowed) {
|
|
const top = this.peek();
|
|
if (top.type !== "KEYWORD" || !allowed.has(top.text)) {
|
|
throw new Error(`expected keyword ${top.text}`);
|
|
}
|
|
return this.pop().text;
|
|
}
|
|
// Pops and returns the value of the next token if it is `type`; throws if out of tokens
|
|
popType(type) {
|
|
if (this.peek().type !== type) {
|
|
throw new Error(`expected ${type}; got ${JSON.stringify(this.peek())}`);
|
|
}
|
|
return this.pop().text;
|
|
}
|
|
// Pops and returns a "(" TOKENS ")"
|
|
popParen() {
|
|
const top = this.peek();
|
|
if (top.type !== "OPEN_PAREN") {
|
|
throw new Error("bad start");
|
|
}
|
|
const result = this.#subTokenString(this.#offset + 1, top.match + 1);
|
|
this.#offset = top.match + 1;
|
|
return result;
|
|
}
|
|
// Pops and returns the items within "(" ITEM1 "," ITEM2 "," ... ")"
|
|
popParams() {
|
|
const top = this.peek();
|
|
if (top.type !== "OPEN_PAREN") {
|
|
throw new Error("bad start");
|
|
}
|
|
const result = [];
|
|
while (this.#offset < top.match - 1) {
|
|
const link = this.peek().linkNext;
|
|
result.push(this.#subTokenString(this.#offset + 1, link));
|
|
this.#offset = link;
|
|
}
|
|
this.#offset = top.match + 1;
|
|
return result;
|
|
}
|
|
// Returns the top Token, throwing if out of tokens
|
|
peek() {
|
|
if (this.#offset >= this.#tokens.length) {
|
|
throw new Error("out-of-bounds");
|
|
}
|
|
return this.#tokens[this.#offset];
|
|
}
|
|
// Returns the next value, if it is a keyword in `allowed`
|
|
peekKeyword(allowed) {
|
|
const top = this.peekType("KEYWORD");
|
|
return (top != null && allowed.has(top)) ? top : null;
|
|
}
|
|
// Returns the value of the next token if it is `type`
|
|
peekType(type) {
|
|
if (this.length === 0) {
|
|
return null;
|
|
}
|
|
const top = this.peek();
|
|
return (top.type === type) ? top.text : null;
|
|
}
|
|
// Returns the next token; throws if out of tokens
|
|
pop() {
|
|
const result = this.peek();
|
|
this.#offset++;
|
|
return result;
|
|
}
|
|
toString() {
|
|
const tokens = [];
|
|
for (let i = this.#offset; i < this.#tokens.length; i++) {
|
|
const token = this.#tokens[i];
|
|
tokens.push(`${token.type}:${token.text}`);
|
|
}
|
|
return `<TokenString ${tokens.join(" ")}>`;
|
|
}
|
|
}
|
|
function lex(text) {
|
|
const tokens = [];
|
|
const throwError = (message) => {
|
|
const token = (offset < text.length) ? JSON.stringify(text[offset]) : "$EOI";
|
|
throw new Error(`invalid token ${token} at ${offset}: ${message}`);
|
|
};
|
|
let brackets = [];
|
|
let commas = [];
|
|
let offset = 0;
|
|
while (offset < text.length) {
|
|
// Strip off any leading whitespace
|
|
let cur = text.substring(offset);
|
|
let match = cur.match(regexWhitespace);
|
|
if (match) {
|
|
offset += match[1].length;
|
|
cur = text.substring(offset);
|
|
}
|
|
const token = { depth: brackets.length, linkBack: -1, linkNext: -1, match: -1, type: "", text: "", offset, value: -1 };
|
|
tokens.push(token);
|
|
let type = (SimpleTokens[cur[0]] || "");
|
|
if (type) {
|
|
token.type = type;
|
|
token.text = cur[0];
|
|
offset++;
|
|
if (type === "OPEN_PAREN") {
|
|
brackets.push(tokens.length - 1);
|
|
commas.push(tokens.length - 1);
|
|
}
|
|
else if (type == "CLOSE_PAREN") {
|
|
if (brackets.length === 0) {
|
|
throwError("no matching open bracket");
|
|
}
|
|
token.match = brackets.pop();
|
|
(tokens[token.match]).match = tokens.length - 1;
|
|
token.depth--;
|
|
token.linkBack = commas.pop();
|
|
(tokens[token.linkBack]).linkNext = tokens.length - 1;
|
|
}
|
|
else if (type === "COMMA") {
|
|
token.linkBack = commas.pop();
|
|
(tokens[token.linkBack]).linkNext = tokens.length - 1;
|
|
commas.push(tokens.length - 1);
|
|
}
|
|
else if (type === "OPEN_BRACKET") {
|
|
token.type = "BRACKET";
|
|
}
|
|
else if (type === "CLOSE_BRACKET") {
|
|
// Remove the CLOSE_BRACKET
|
|
let suffix = tokens.pop().text;
|
|
if (tokens.length > 0 && tokens[tokens.length - 1].type === "NUMBER") {
|
|
const value = tokens.pop().text;
|
|
suffix = value + suffix;
|
|
(tokens[tokens.length - 1]).value = getNumber(value);
|
|
}
|
|
if (tokens.length === 0 || tokens[tokens.length - 1].type !== "BRACKET") {
|
|
throw new Error("missing opening bracket");
|
|
}
|
|
(tokens[tokens.length - 1]).text += suffix;
|
|
}
|
|
continue;
|
|
}
|
|
match = cur.match(regexIdentifier);
|
|
if (match) {
|
|
token.text = match[1];
|
|
offset += token.text.length;
|
|
if (Keywords.has(token.text)) {
|
|
token.type = "KEYWORD";
|
|
continue;
|
|
}
|
|
if (token.text.match(regexType)) {
|
|
token.type = "TYPE";
|
|
continue;
|
|
}
|
|
token.type = "ID";
|
|
continue;
|
|
}
|
|
match = cur.match(regexNumber);
|
|
if (match) {
|
|
token.text = match[1];
|
|
token.type = "NUMBER";
|
|
offset += token.text.length;
|
|
continue;
|
|
}
|
|
throw new Error(`unexpected token ${JSON.stringify(cur[0])} at position ${offset}`);
|
|
}
|
|
return new TokenString(tokens.map((t) => Object.freeze(t)));
|
|
}
|
|
// Check only one of `allowed` is in `set`
|
|
function allowSingle(set, allowed) {
|
|
let included = [];
|
|
for (const key in allowed.keys()) {
|
|
if (set.has(key)) {
|
|
included.push(key);
|
|
}
|
|
}
|
|
if (included.length > 1) {
|
|
throw new Error(`conflicting types: ${included.join(", ")}`);
|
|
}
|
|
}
|
|
// Functions to process a Solidity Signature TokenString from left-to-right for...
|
|
// ...the name with an optional type, returning the name
|
|
function consumeName(type, tokens) {
|
|
if (tokens.peekKeyword(KwTypes)) {
|
|
const keyword = tokens.pop().text;
|
|
if (keyword !== type) {
|
|
throw new Error(`expected ${type}, got ${keyword}`);
|
|
}
|
|
}
|
|
return tokens.popType("ID");
|
|
}
|
|
// ...all keywords matching allowed, returning the keywords
|
|
function consumeKeywords(tokens, allowed) {
|
|
const keywords = new Set();
|
|
while (true) {
|
|
const keyword = tokens.peekType("KEYWORD");
|
|
if (keyword == null || (allowed && !allowed.has(keyword))) {
|
|
break;
|
|
}
|
|
tokens.pop();
|
|
if (keywords.has(keyword)) {
|
|
throw new Error(`duplicate keywords: ${JSON.stringify(keyword)}`);
|
|
}
|
|
keywords.add(keyword);
|
|
}
|
|
return Object.freeze(keywords);
|
|
}
|
|
// ...all visibility keywords, returning the coalesced mutability
|
|
function consumeMutability(tokens) {
|
|
let modifiers = consumeKeywords(tokens, KwVisib);
|
|
// Detect conflicting modifiers
|
|
allowSingle(modifiers, setify("constant payable nonpayable".split(" ")));
|
|
allowSingle(modifiers, setify("pure view payable nonpayable".split(" ")));
|
|
// Process mutability states
|
|
if (modifiers.has("view")) {
|
|
return "view";
|
|
}
|
|
if (modifiers.has("pure")) {
|
|
return "pure";
|
|
}
|
|
if (modifiers.has("payable")) {
|
|
return "payable";
|
|
}
|
|
if (modifiers.has("nonpayable")) {
|
|
return "nonpayable";
|
|
}
|
|
// Process legacy `constant` last
|
|
if (modifiers.has("constant")) {
|
|
return "view";
|
|
}
|
|
return "nonpayable";
|
|
}
|
|
// ...a parameter list, returning the ParamType list
|
|
function consumeParams(tokens, allowIndexed) {
|
|
return tokens.popParams().map((t) => ParamType.from(t, allowIndexed));
|
|
}
|
|
// ...a gas limit, returning a BigNumber or null if none
|
|
function consumeGas(tokens) {
|
|
if (tokens.peekType("AT")) {
|
|
tokens.pop();
|
|
if (tokens.peekType("NUMBER")) {
|
|
return getBigInt(tokens.pop().text);
|
|
}
|
|
throw new Error("invalid gas");
|
|
}
|
|
return null;
|
|
}
|
|
function consumeEoi(tokens) {
|
|
if (tokens.length) {
|
|
throw new Error(`unexpected tokens: ${tokens.toString()}`);
|
|
}
|
|
}
|
|
const regexArrayType = new RegExp(/^(.*)\[([0-9]*)\]$/);
|
|
function verifyBasicType(type) {
|
|
const match = type.match(regexType);
|
|
assertArgument(match, "invalid type", "type", type);
|
|
if (type === "uint") {
|
|
return "uint256";
|
|
}
|
|
if (type === "int") {
|
|
return "int256";
|
|
}
|
|
if (match[2]) {
|
|
// bytesXX
|
|
const length = parseInt(match[2]);
|
|
assertArgument(length !== 0 && length <= 32, "invalid bytes length", "type", type);
|
|
}
|
|
else if (match[3]) {
|
|
// intXX or uintXX
|
|
const size = parseInt(match[3]);
|
|
assertArgument(size !== 0 && size <= 256 && (size % 8) === 0, "invalid numeric width", "type", type);
|
|
}
|
|
return type;
|
|
}
|
|
// Make the Fragment constructors effectively private
|
|
const _guard = {};
|
|
const internal = Symbol.for("_ethers_internal");
|
|
const ParamTypeInternal = "_ParamTypeInternal";
|
|
const ErrorFragmentInternal = "_ErrorInternal";
|
|
const EventFragmentInternal = "_EventInternal";
|
|
const ConstructorFragmentInternal = "_ConstructorInternal";
|
|
const FunctionFragmentInternal = "_FunctionInternal";
|
|
const StructFragmentInternal = "_StructInternal";
|
|
export class ParamType {
|
|
// The local name of the parameter (of "" if unbound)
|
|
name;
|
|
// The fully qualified type (e.g. "address", "tuple(address)", "uint256[3][]"
|
|
type;
|
|
// The base type (e.g. "address", "tuple", "array")
|
|
baseType;
|
|
// Indexable Paramters ONLY (otherwise null)
|
|
indexed;
|
|
// Tuples ONLY: (otherwise null)
|
|
// - sub-components
|
|
components;
|
|
// Arrays ONLY: (otherwise null)
|
|
// - length of the array (-1 for dynamic length)
|
|
// - child type
|
|
arrayLength;
|
|
arrayChildren;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, name, type, baseType, indexed, components, arrayLength, arrayChildren) {
|
|
assertPrivate(guard, _guard, "ParamType");
|
|
Object.defineProperty(this, internal, { value: ParamTypeInternal });
|
|
if (components) {
|
|
components = Object.freeze(components.slice());
|
|
}
|
|
if (baseType === "array") {
|
|
if (arrayLength == null || arrayChildren == null) {
|
|
throw new Error("");
|
|
}
|
|
}
|
|
else if (arrayLength != null || arrayChildren != null) {
|
|
throw new Error("");
|
|
}
|
|
if (baseType === "tuple") {
|
|
if (components == null) {
|
|
throw new Error("");
|
|
}
|
|
}
|
|
else if (components != null) {
|
|
throw new Error("");
|
|
}
|
|
defineProperties(this, {
|
|
name, type, baseType, indexed, components, arrayLength, arrayChildren
|
|
});
|
|
}
|
|
// Format the parameter fragment
|
|
// - sighash: "(uint256,address)"
|
|
// - minimal: "tuple(uint256,address) indexed"
|
|
// - full: "tuple(uint256 foo, address bar) indexed baz"
|
|
format(format) {
|
|
if (format == null) {
|
|
format = "sighash";
|
|
}
|
|
if (format === "json") {
|
|
let result = {
|
|
type: ((this.baseType === "tuple") ? "tuple" : this.type),
|
|
name: (this.name || undefined)
|
|
};
|
|
if (typeof (this.indexed) === "boolean") {
|
|
result.indexed = this.indexed;
|
|
}
|
|
if (this.isTuple()) {
|
|
result.components = this.components.map((c) => JSON.parse(c.format(format)));
|
|
}
|
|
return JSON.stringify(result);
|
|
}
|
|
let result = "";
|
|
// Array
|
|
if (this.isArray()) {
|
|
result += this.arrayChildren.format(format);
|
|
result += `[${(this.arrayLength < 0 ? "" : String(this.arrayLength))}]`;
|
|
}
|
|
else {
|
|
if (this.isTuple()) {
|
|
if (format !== "sighash") {
|
|
result += this.type;
|
|
}
|
|
result += "(" + this.components.map((comp) => comp.format(format)).join((format === "full") ? ", " : ",") + ")";
|
|
}
|
|
else {
|
|
result += this.type;
|
|
}
|
|
}
|
|
if (format !== "sighash") {
|
|
if (this.indexed === true) {
|
|
result += " indexed";
|
|
}
|
|
if (format === "full" && this.name) {
|
|
result += " " + this.name;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
static isArray(value) {
|
|
return value && (value.baseType === "array");
|
|
}
|
|
isArray() {
|
|
return (this.baseType === "array");
|
|
}
|
|
isTuple() {
|
|
return (this.baseType === "tuple");
|
|
}
|
|
isIndexable() {
|
|
return (this.indexed != null);
|
|
}
|
|
walk(value, process) {
|
|
if (this.isArray()) {
|
|
if (!Array.isArray(value)) {
|
|
throw new Error("invlaid array value");
|
|
}
|
|
if (this.arrayLength !== -1 && value.length !== this.arrayLength) {
|
|
throw new Error("array is wrong length");
|
|
}
|
|
const _this = this;
|
|
return value.map((v) => (_this.arrayChildren.walk(v, process)));
|
|
}
|
|
if (this.isTuple()) {
|
|
if (!Array.isArray(value)) {
|
|
throw new Error("invlaid tuple value");
|
|
}
|
|
if (value.length !== this.components.length) {
|
|
throw new Error("array is wrong length");
|
|
}
|
|
const _this = this;
|
|
return value.map((v, i) => (_this.components[i].walk(v, process)));
|
|
}
|
|
return process(this.type, value);
|
|
}
|
|
#walkAsync(promises, value, process, setValue) {
|
|
if (this.isArray()) {
|
|
if (!Array.isArray(value)) {
|
|
throw new Error("invlaid array value");
|
|
}
|
|
if (this.arrayLength !== -1 && value.length !== this.arrayLength) {
|
|
throw new Error("array is wrong length");
|
|
}
|
|
const childType = this.arrayChildren;
|
|
const result = value.slice();
|
|
result.forEach((value, index) => {
|
|
childType.#walkAsync(promises, value, process, (value) => {
|
|
result[index] = value;
|
|
});
|
|
});
|
|
setValue(result);
|
|
return;
|
|
}
|
|
if (this.isTuple()) {
|
|
const components = this.components;
|
|
// Convert the object into an array
|
|
let result;
|
|
if (Array.isArray(value)) {
|
|
result = value.slice();
|
|
}
|
|
else {
|
|
if (value == null || typeof (value) !== "object") {
|
|
throw new Error("invlaid tuple value");
|
|
}
|
|
result = components.map((param) => {
|
|
if (!param.name) {
|
|
throw new Error("cannot use object value with unnamed components");
|
|
}
|
|
if (!(param.name in value)) {
|
|
throw new Error(`missing value for component ${param.name}`);
|
|
}
|
|
return value[param.name];
|
|
});
|
|
}
|
|
if (result.length !== this.components.length) {
|
|
throw new Error("array is wrong length");
|
|
}
|
|
result.forEach((value, index) => {
|
|
components[index].#walkAsync(promises, value, process, (value) => {
|
|
result[index] = value;
|
|
});
|
|
});
|
|
setValue(result);
|
|
return;
|
|
}
|
|
const result = process(this.type, value);
|
|
if (result.then) {
|
|
promises.push((async function () { setValue(await result); })());
|
|
}
|
|
else {
|
|
setValue(result);
|
|
}
|
|
}
|
|
async walkAsync(value, process) {
|
|
const promises = [];
|
|
const result = [value];
|
|
this.#walkAsync(promises, value, process, (value) => {
|
|
result[0] = value;
|
|
});
|
|
if (promises.length) {
|
|
await Promise.all(promises);
|
|
}
|
|
return result[0];
|
|
}
|
|
static from(obj, allowIndexed) {
|
|
if (ParamType.isParamType(obj)) {
|
|
return obj;
|
|
}
|
|
if (typeof (obj) === "string") {
|
|
return ParamType.from(lex(obj), allowIndexed);
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
let type = "", baseType = "";
|
|
let comps = null;
|
|
if (consumeKeywords(obj, setify(["tuple"])).has("tuple") || obj.peekType("OPEN_PAREN")) {
|
|
// Tuple
|
|
baseType = "tuple";
|
|
comps = obj.popParams().map((t) => ParamType.from(t));
|
|
type = `tuple(${comps.map((c) => c.format()).join(",")})`;
|
|
}
|
|
else {
|
|
// Normal
|
|
type = verifyBasicType(obj.popType("TYPE"));
|
|
baseType = type;
|
|
}
|
|
// Check for Array
|
|
let arrayChildren = null;
|
|
let arrayLength = null;
|
|
while (obj.length && obj.peekType("BRACKET")) {
|
|
const bracket = obj.pop(); //arrays[i];
|
|
arrayChildren = new ParamType(_guard, "", type, baseType, null, comps, arrayLength, arrayChildren);
|
|
arrayLength = bracket.value;
|
|
type += bracket.text;
|
|
baseType = "array";
|
|
comps = null;
|
|
}
|
|
let indexed = null;
|
|
const keywords = consumeKeywords(obj, KwModifiers);
|
|
if (keywords.has("indexed")) {
|
|
if (!allowIndexed) {
|
|
throw new Error("");
|
|
}
|
|
indexed = true;
|
|
}
|
|
const name = (obj.peekType("ID") ? obj.pop().text : "");
|
|
if (obj.length) {
|
|
throw new Error("leftover tokens");
|
|
}
|
|
return new ParamType(_guard, name, type, baseType, indexed, comps, arrayLength, arrayChildren);
|
|
}
|
|
const name = obj.name;
|
|
assertArgument(!name || (typeof (name) === "string" && name.match(regexIdentifier)), "invalid name", "obj.name", name);
|
|
let indexed = obj.indexed;
|
|
if (indexed != null) {
|
|
assertArgument(allowIndexed, "parameter cannot be indexed", "obj.indexed", obj.indexed);
|
|
indexed = !!indexed;
|
|
}
|
|
let type = obj.type;
|
|
let arrayMatch = type.match(regexArrayType);
|
|
if (arrayMatch) {
|
|
const arrayLength = arrayMatch[2];
|
|
const arrayChildren = ParamType.from({
|
|
type: arrayMatch[1],
|
|
components: obj.components
|
|
});
|
|
return new ParamType(_guard, name, type, "array", indexed, null, arrayLength, arrayChildren);
|
|
}
|
|
if (type === "tuple" || type.substring(0, 5) === "tuple(" || type[0] === "(") {
|
|
const comps = (obj.components != null) ? obj.components.map((c) => ParamType.from(c)) : null;
|
|
const tuple = new ParamType(_guard, name, type, "tuple", indexed, comps, null, null);
|
|
// @TODO: use lexer to validate and normalize type
|
|
return tuple;
|
|
}
|
|
type = verifyBasicType(obj.type);
|
|
return new ParamType(_guard, name, type, type, indexed, null, null, null);
|
|
}
|
|
static isParamType(value) {
|
|
return (value && value[internal] === ParamTypeInternal);
|
|
}
|
|
}
|
|
export class Fragment {
|
|
type;
|
|
inputs;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, type, inputs) {
|
|
assertPrivate(guard, _guard, "Fragment");
|
|
inputs = Object.freeze(inputs.slice());
|
|
defineProperties(this, { type, inputs });
|
|
}
|
|
static from(obj) {
|
|
if (typeof (obj) === "string") {
|
|
try {
|
|
Fragment.from(JSON.parse(obj));
|
|
}
|
|
catch (e) { }
|
|
return Fragment.from(lex(obj));
|
|
}
|
|
if (obj instanceof TokenString) {
|
|
const type = obj.popKeyword(KwTypes);
|
|
switch (type) {
|
|
case "constructor": return ConstructorFragment.from(obj);
|
|
case "error": return ErrorFragment.from(obj);
|
|
case "event": return EventFragment.from(obj);
|
|
case "function": return FunctionFragment.from(obj);
|
|
case "struct": return StructFragment.from(obj);
|
|
}
|
|
throw new Error(`unsupported type: ${type}`);
|
|
}
|
|
if (typeof (obj) === "object") {
|
|
switch (obj.type) {
|
|
case "constructor": return ConstructorFragment.from(obj);
|
|
case "error": return ErrorFragment.from(obj);
|
|
case "event": return EventFragment.from(obj);
|
|
case "function": return FunctionFragment.from(obj);
|
|
case "struct": return StructFragment.from(obj);
|
|
}
|
|
throw new Error(`not implemented yet: ${obj.type}`);
|
|
}
|
|
throw new Error(`unsupported type: ${obj}`);
|
|
}
|
|
static isConstructor(value) {
|
|
return ConstructorFragment.isFragment(value);
|
|
}
|
|
static isError(value) {
|
|
return ErrorFragment.isFragment(value);
|
|
}
|
|
static isEvent(value) {
|
|
return EventFragment.isFragment(value);
|
|
}
|
|
static isFunction(value) {
|
|
return FunctionFragment.isFragment(value);
|
|
}
|
|
static isStruct(value) {
|
|
return StructFragment.isFragment(value);
|
|
}
|
|
}
|
|
export class NamedFragment extends Fragment {
|
|
name;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, type, name, inputs) {
|
|
super(guard, type, inputs);
|
|
assertArgument(typeof (name) === "string" && name.match(regexIdentifier), "invalid identifier", "name", name);
|
|
inputs = Object.freeze(inputs.slice());
|
|
defineProperties(this, { name });
|
|
}
|
|
}
|
|
function joinParams(format, params) {
|
|
return "(" + params.map((p) => p.format(format)).join((format === "full") ? ", " : ",") + ")";
|
|
}
|
|
export class ErrorFragment extends NamedFragment {
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, name, inputs) {
|
|
super(guard, "error", name, inputs);
|
|
Object.defineProperty(this, internal, { value: ErrorFragmentInternal });
|
|
}
|
|
get selector() {
|
|
return id(this.format("sighash")).substring(0, 10);
|
|
}
|
|
format(format) {
|
|
if (format == null) {
|
|
format = "sighash";
|
|
}
|
|
if (format === "json") {
|
|
return JSON.stringify({
|
|
type: "error",
|
|
name: this.name,
|
|
inputs: this.inputs.map((input) => JSON.parse(input.format(format))),
|
|
});
|
|
}
|
|
const result = [];
|
|
if (format !== "sighash") {
|
|
result.push("error");
|
|
}
|
|
result.push(this.name + joinParams(format, this.inputs));
|
|
return result.join(" ");
|
|
}
|
|
static from(obj) {
|
|
if (ErrorFragment.isFragment(obj)) {
|
|
return obj;
|
|
}
|
|
if (typeof (obj) === "string") {
|
|
return ErrorFragment.from(lex(obj));
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
const name = consumeName("error", obj);
|
|
const inputs = consumeParams(obj);
|
|
consumeEoi(obj);
|
|
return new ErrorFragment(_guard, name, inputs);
|
|
}
|
|
return new ErrorFragment(_guard, obj.name, obj.inputs ? obj.inputs.map(ParamType.from) : []);
|
|
}
|
|
static isFragment(value) {
|
|
return (value && value[internal] === ErrorFragmentInternal);
|
|
}
|
|
}
|
|
export class EventFragment extends NamedFragment {
|
|
anonymous;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, name, inputs, anonymous) {
|
|
super(guard, "event", name, inputs);
|
|
Object.defineProperty(this, internal, { value: EventFragmentInternal });
|
|
defineProperties(this, { anonymous });
|
|
}
|
|
get topicHash() {
|
|
return id(this.format("sighash"));
|
|
}
|
|
format(format) {
|
|
if (format == null) {
|
|
format = "sighash";
|
|
}
|
|
if (format === "json") {
|
|
return JSON.stringify({
|
|
type: "event",
|
|
anonymous: this.anonymous,
|
|
name: this.name,
|
|
inputs: this.inputs.map((i) => JSON.parse(i.format(format)))
|
|
});
|
|
}
|
|
const result = [];
|
|
if (format !== "sighash") {
|
|
result.push("event");
|
|
}
|
|
result.push(this.name + joinParams(format, this.inputs));
|
|
if (format !== "sighash" && this.anonymous) {
|
|
result.push("anonymous");
|
|
}
|
|
return result.join(" ");
|
|
}
|
|
static from(obj) {
|
|
if (EventFragment.isFragment(obj)) {
|
|
return obj;
|
|
}
|
|
if (typeof (obj) === "string") {
|
|
return EventFragment.from(lex(obj));
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
const name = consumeName("event", obj);
|
|
const inputs = consumeParams(obj, true);
|
|
const anonymous = !!consumeKeywords(obj, setify(["anonymous"])).has("anonymous");
|
|
consumeEoi(obj);
|
|
return new EventFragment(_guard, name, inputs, anonymous);
|
|
}
|
|
return new EventFragment(_guard, obj.name, obj.inputs ? obj.inputs.map((p) => ParamType.from(p, true)) : [], !!obj.anonymous);
|
|
}
|
|
static isFragment(value) {
|
|
return (value && value[internal] === EventFragmentInternal);
|
|
}
|
|
}
|
|
export class ConstructorFragment extends Fragment {
|
|
payable;
|
|
gas;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, type, inputs, payable, gas) {
|
|
super(guard, type, inputs);
|
|
Object.defineProperty(this, internal, { value: ConstructorFragmentInternal });
|
|
defineProperties(this, { payable, gas });
|
|
}
|
|
format(format) {
|
|
assert(format != null && format !== "sighash", "cannot format a constructor for sighash", "UNSUPPORTED_OPERATION", { operation: "format(sighash)" });
|
|
if (format === "json") {
|
|
return JSON.stringify({
|
|
type: "constructor",
|
|
stateMutability: (this.payable ? "payable" : "undefined"),
|
|
payable: this.payable,
|
|
gas: ((this.gas != null) ? this.gas : undefined),
|
|
inputs: this.inputs.map((i) => JSON.parse(i.format(format)))
|
|
});
|
|
}
|
|
const result = [`constructor${joinParams(format, this.inputs)}`];
|
|
result.push((this.payable) ? "payable" : "nonpayable");
|
|
if (this.gas != null) {
|
|
result.push(`@${this.gas.toString()}`);
|
|
}
|
|
return result.join(" ");
|
|
}
|
|
static from(obj) {
|
|
if (ConstructorFragment.isFragment(obj)) {
|
|
return obj;
|
|
}
|
|
if (typeof (obj) === "string") {
|
|
return ConstructorFragment.from(lex(obj));
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
consumeKeywords(obj, setify(["constructor"]));
|
|
const inputs = consumeParams(obj);
|
|
const payable = !!consumeKeywords(obj, setify(["payable"])).has("payable");
|
|
const gas = consumeGas(obj);
|
|
consumeEoi(obj);
|
|
return new ConstructorFragment(_guard, "constructor", inputs, payable, gas);
|
|
}
|
|
return new ConstructorFragment(_guard, "constructor", obj.inputs ? obj.inputs.map(ParamType.from) : [], !!obj.payable, (obj.gas != null) ? obj.gas : null);
|
|
}
|
|
static isFragment(value) {
|
|
return (value && value[internal] === ConstructorFragmentInternal);
|
|
}
|
|
}
|
|
export class FunctionFragment extends NamedFragment {
|
|
constant;
|
|
outputs;
|
|
stateMutability;
|
|
payable;
|
|
gas;
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, name, stateMutability, inputs, outputs, gas) {
|
|
super(guard, "function", name, inputs);
|
|
Object.defineProperty(this, internal, { value: FunctionFragmentInternal });
|
|
outputs = Object.freeze(outputs.slice());
|
|
const constant = (stateMutability === "view" || stateMutability === "pure");
|
|
const payable = (stateMutability === "payable");
|
|
defineProperties(this, { constant, gas, outputs, payable, stateMutability });
|
|
}
|
|
get selector() {
|
|
return id(this.format("sighash")).substring(0, 10);
|
|
}
|
|
format(format) {
|
|
if (format == null) {
|
|
format = "sighash";
|
|
}
|
|
if (format === "json") {
|
|
return JSON.stringify({
|
|
type: "function",
|
|
name: this.name,
|
|
constant: this.constant,
|
|
stateMutability: ((this.stateMutability !== "nonpayable") ? this.stateMutability : undefined),
|
|
payable: this.payable,
|
|
gas: ((this.gas != null) ? this.gas : undefined),
|
|
inputs: this.inputs.map((i) => JSON.parse(i.format(format))),
|
|
outputs: this.outputs.map((o) => JSON.parse(o.format(format))),
|
|
});
|
|
}
|
|
const result = [];
|
|
if (format !== "sighash") {
|
|
result.push("function");
|
|
}
|
|
result.push(this.name + joinParams(format, this.inputs));
|
|
if (format !== "sighash") {
|
|
if (this.stateMutability !== "nonpayable") {
|
|
result.push(this.stateMutability);
|
|
}
|
|
if (this.outputs && this.outputs.length) {
|
|
result.push("returns");
|
|
result.push(joinParams(format, this.outputs));
|
|
}
|
|
if (this.gas != null) {
|
|
result.push(`@${this.gas.toString()}`);
|
|
}
|
|
}
|
|
return result.join(" ");
|
|
}
|
|
static from(obj) {
|
|
if (FunctionFragment.isFragment(obj)) {
|
|
return obj;
|
|
}
|
|
if (typeof (obj) === "string") {
|
|
return FunctionFragment.from(lex(obj));
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
const name = consumeName("function", obj);
|
|
const inputs = consumeParams(obj);
|
|
const mutability = consumeMutability(obj);
|
|
let outputs = [];
|
|
if (consumeKeywords(obj, setify(["returns"])).has("returns")) {
|
|
outputs = consumeParams(obj);
|
|
}
|
|
const gas = consumeGas(obj);
|
|
consumeEoi(obj);
|
|
return new FunctionFragment(_guard, name, mutability, inputs, outputs, gas);
|
|
}
|
|
// @TODO: verifyState for stateMutability
|
|
return new FunctionFragment(_guard, obj.name, obj.stateMutability, obj.inputs ? obj.inputs.map(ParamType.from) : [], obj.outputs ? obj.outputs.map(ParamType.from) : [], (obj.gas != null) ? obj.gas : null);
|
|
}
|
|
static isFragment(value) {
|
|
return (value && value[internal] === FunctionFragmentInternal);
|
|
}
|
|
}
|
|
export class StructFragment extends NamedFragment {
|
|
/**
|
|
* @private
|
|
*/
|
|
constructor(guard, name, inputs) {
|
|
super(guard, "struct", name, inputs);
|
|
Object.defineProperty(this, internal, { value: StructFragmentInternal });
|
|
}
|
|
format() {
|
|
throw new Error("@TODO");
|
|
}
|
|
static from(obj) {
|
|
if (typeof (obj) === "string") {
|
|
return StructFragment.from(lex(obj));
|
|
}
|
|
else if (obj instanceof TokenString) {
|
|
const name = consumeName("struct", obj);
|
|
const inputs = consumeParams(obj);
|
|
consumeEoi(obj);
|
|
return new StructFragment(_guard, name, inputs);
|
|
}
|
|
return new StructFragment(_guard, obj.name, obj.inputs ? obj.inputs.map(ParamType.from) : []);
|
|
}
|
|
static isFragment(value) {
|
|
return (value && value[internal] === StructFragmentInternal);
|
|
}
|
|
}
|
|
//# sourceMappingURL=fragments.js.map
|