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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 | 1x 49x 49x 45x 3x 10x 1x 1x 22x 22x 22x 14x 8x 11x 11x 16x 16x 2x 5x 1x 3x 31x 31x 2x 29x 3x 26x 10x 1x 9x 16x 5x 1x 4x 1x 3x 3x 1x 3x 11x 9x 1x 8x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import { JSONRPC_VERSION } from './Defines';
declare type RPCID = string | number | null | undefined;
declare type RPCParams = Array<any> | object;
// Base JSON-RPC message structure
class RPCMessage
{
jsonrpc: string;
id: RPCID;
constructor(id: RPCID)
{
this.jsonrpc = JSONRPC_VERSION;
if (id !== undefined)
this.id = id;
}
isRequest(): boolean
{
return (this instanceof RPCRequest);
}
isResponse(): boolean
{
return (this instanceof RPCResponseError || this instanceof RPCResponseResult);
}
}
// JSON-RPC error object
class RPCError
{
code: number = 0;
message: string = "";
data?: any;
}
// JSON-RPC request object
class RPCRequest extends RPCMessage
{
method: string;
params?: RPCParams;
constructor(id: RPCID, method: string, params?: RPCParams)
{
super(id);
this.method = method;
if (params !== undefined)
this.params = params;
}
isNotification(): boolean
{
return (this.id === undefined || this.id === null);
}
}
class RPCResponseError extends RPCMessage
{
error: RPCError;
constructor(id: RPCID, error: RPCError)
{
super(id);
this.error = error;
}
}
class RPCResponseResult extends RPCMessage
{
result: any;
constructor(id: RPCID, result: any)
{
super(id);
this.result = result;
}
}
type RPCResponse = RPCResponseError | RPCResponseResult;
// JSON-RPC response object
/*class RPCResponse extends RPCMessage
{
result?: any;
error?: RPCError;
constructor(id: RPCID, result?: any, error?: RPCError)
{
super(id);
if (result && error)
throw new Error("Result and error can not coexist in RPCResponse");
else if (result !== undefined)
this.result = result;
else if (error !== undefined)
this.error = error;
else
throw new Error("Result or error must exist in RPCResponse");
}
}*/
class JSONParseError extends Error {
constructor() {
super("JSON Parse Error");
}
}
class InvalidMessageError extends Error {
constructor(e: string) {
super("Invalid Message: " + e);
}
}
class InvalidRequestError extends Error {
constructor(e: string) {
super("Invalid Request: " + e);
}
}
class InvalidResponseError extends Error {
constructor(e: string) {
super("Invalid Request: " + e);
}
}
function ParseRPCMessage(msg: string): RPCRequest | RPCResponse
{
try {
var data = JSON.parse(msg);
} catch(e) {
throw new JSONParseError();
}
if (data.jsonrpc != JSONRPC_VERSION)
throw new InvalidMessageError("wrong json rpc version");
// Request object
if (data.method) {
// Method must be a string
if (typeof data.method !== "string")
throw new InvalidRequestError("method is not a string");
return new RPCRequest(data.id, data.method, data.params);
}
// Response error object
else if (data.error !== undefined) {
if (typeof data.error.code !== "number")
throw new InvalidResponseError("error code is not a number");
if (typeof data.error.message !== "string")
throw new InvalidResponseError("error message is not a string");
let error: RPCError = {
code: data.error.code,
message: data.error.message,
};
// Data field is optional
if (data.error.data)
error.data = data.error.data;
return new RPCResponseError(data.id, error);
}
// Response success object
else if (data.result !== undefined) {
if (data.id === undefined)
throw new InvalidResponseError("id not found");
return new RPCResponseResult(data.id, data.result);
}
// Invalid object
else
throw new InvalidMessageError("unknown message type");
}
export {
RPCID,
RPCParams,
RPCMessage,
RPCError,
RPCResponseError,
RPCResponseResult,
RPCRequest,
RPCResponse,
JSONParseError,
InvalidMessageError,
InvalidRequestError,
InvalidResponseError,
ParseRPCMessage
};
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