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idl.ts
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idl.ts
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import { Buffer } from "buffer";
import { PublicKey } from "@solana/web3.js";
import * as borsh from "@project-serum/borsh";
export type Idl = {
version: string;
name: string;
instructions: IdlInstruction[];
state?: IdlState;
accounts?: IdlTypeDef[];
types?: IdlTypeDef[];
events?: IdlEvent[];
errors?: IdlErrorCode[];
constants?: IdlConstant[];
metadata?: IdlMetadata;
};
export type IdlMetadata = any;
export type IdlConstant = {
name: string;
type: IdlType;
value: string;
};
export type IdlEvent = {
name: string;
fields: IdlEventField[];
};
export type IdlEventField = {
name: string;
type: IdlType;
index: boolean;
};
export type IdlInstruction = {
name: string;
accounts: IdlAccountItem[];
args: IdlField[];
};
export type IdlState = {
struct: IdlTypeDef;
methods: IdlStateMethod[];
};
export type IdlStateMethod = IdlInstruction;
export type IdlAccountItem = IdlAccount | IdlAccounts;
export type IdlAccount = {
name: string;
isMut: boolean;
isSigner: boolean;
pda?: IdlPda;
};
export type IdlPda = {
seeds: IdlSeed[];
programId?: IdlSeed;
};
export type IdlSeed = any; // TODO
// A nested/recursive version of IdlAccount.
export type IdlAccounts = {
name: string;
accounts: IdlAccountItem[];
};
export type IdlField = {
name: string;
type: IdlType;
};
export type IdlTypeDef = {
name: string;
type: IdlTypeDefTy;
};
export type IdlTypeDefTyStruct = {
kind: "struct";
fields: IdlTypeDefStruct;
};
export type IdlTypeDefTyEnum = {
kind: "enum";
variants: IdlEnumVariant[];
};
type IdlTypeDefTy = IdlTypeDefTyEnum | IdlTypeDefTyStruct;
type IdlTypeDefStruct = Array<IdlField>;
export type IdlType =
| "bool"
| "u8"
| "i8"
| "u16"
| "i16"
| "u32"
| "i32"
| "f32"
| "u64"
| "i64"
| "f64"
| "u128"
| "i128"
| "bytes"
| "string"
| "publicKey"
| IdlTypeDefined
| IdlTypeOption
| IdlTypeCOption
| IdlTypeVec
| IdlTypeArray;
// User defined type.
export type IdlTypeDefined = {
defined: string;
};
export type IdlTypeOption = {
option: IdlType;
};
export type IdlTypeCOption = {
coption: IdlType;
};
export type IdlTypeVec = {
vec: IdlType;
};
export type IdlTypeArray = {
array: [idlType: IdlType, size: number];
};
export type IdlEnumVariant = {
name: string;
fields?: IdlEnumFields;
};
type IdlEnumFields = IdlEnumFieldsNamed | IdlEnumFieldsTuple;
type IdlEnumFieldsNamed = IdlField[];
type IdlEnumFieldsTuple = IdlType[];
export type IdlErrorCode = {
code: number;
name: string;
msg?: string;
};
// Deterministic IDL address as a function of the program id.
export async function idlAddress(programId: PublicKey): Promise<PublicKey> {
const base = (await PublicKey.findProgramAddress([], programId))[0];
return await PublicKey.createWithSeed(base, seed(), programId);
}
// Seed for generating the idlAddress.
export function seed(): string {
return "anchor:idl";
}
// The on-chain account of the IDL.
export interface IdlProgramAccount {
authority: PublicKey;
data: Buffer;
}
const IDL_ACCOUNT_LAYOUT: borsh.Layout<IdlProgramAccount> = borsh.struct([
borsh.publicKey("authority"),
borsh.vecU8("data"),
]);
export function decodeIdlAccount(data: Buffer): IdlProgramAccount {
return IDL_ACCOUNT_LAYOUT.decode(data);
}
export function encodeIdlAccount(acc: IdlProgramAccount): Buffer {
const buffer = Buffer.alloc(1000); // TODO: use a tighter buffer.
const len = IDL_ACCOUNT_LAYOUT.encode(acc, buffer);
return buffer.slice(0, len);
}