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import { Ice as Ice_OperationMode } from "./OperationMode.js";
const { OperationMode } = Ice_OperationMode;
import { FormatType } from "./FormatType.js";
import { MarshalException, OperationNotExistException } from "./LocalExceptions.js";
import { ObjectPrx } from "./ObjectPrx.js";
import { TypeRegistry } from "./TypeRegistry.js";
import {
ByteHelper,
BoolHelper,
ShortHelper,
IntHelper,
LongHelper,
FloatHelper,
DoubleHelper,
StringHelper,
} from "./StreamHelpers.js";
import { Value } from "./Value.js";
const builtinHelpers = [
ByteHelper,
BoolHelper,
ShortHelper,
IntHelper,
LongHelper,
FloatHelper,
DoubleHelper,
StringHelper,
ObjectPrx,
Value,
];
function parseParam(p) {
let type = p[0];
const t = typeof type;
if (t === "number") {
type = builtinHelpers[p[0]];
} else if (t === "string") {
const typeName = p[0];
type = TypeRegistry.getProxyType(typeName);
if (type === undefined) {
type = TypeRegistry.getValueType(typeName);
}
}
return {
type: type,
isObject: p[1] === true,
tag: p[2], // Optional tag, which may not be present - an undefined tag means "not optional".
};
}
//
// Each operation descriptor is a property. The key is the "on-the-wire"
// name, and the value is an array consisting of the following elements:
//
// 0: native method name in case of a keyword conflict (e.g., "_while"),
// otherwise an empty string
// 1: mode (undefined == Normal or int)
// 2: format (undefined == Default or int)
// 3: return type (undefined if void, or [type, tag])
// 4: in params (undefined if none, or array of [type, tag])
// 5: out params (undefined if none, or array of [type, tag])
// 6: exceptions (undefined if none, or array of types)
// 7: sends classes (true or undefined)
// 8: returns classes (true or undefined)
//
function parseOperation(name, arr) {
const r = {};
r.name = name;
r.servantMethod = arr[0] ? arr[0] : name;
r.mode = OperationMode.valueOf(arr[1]);
r.format = arr[2] ? FormatType.valueOf(arr[2]) : null;
let ret;
if (arr[3]) {
ret = parseParam(arr[3]);
ret.pos = 0;
}
r.returns = ret;
const inParams = [];
const inParamsOpt = [];
if (arr[4]) {
for (let i = 0; i < arr[4].length; ++i) {
const p = parseParam(arr[4][i]);
p.pos = i;
inParams.push(p);
if (p.tag) {
inParamsOpt.push(p);
}
}
}
inParamsOpt.sort((p1, p2) => p1.tag - p2.tag); // Sort by tag.
r.inParams = inParams;
r.inParamsOpt = inParamsOpt;
const outParams = [];
const outParamsOpt = [];
if (arr[5]) {
const offs = ret ? 1 : 0;
for (let i = 0; i < arr[5].length; ++i) {
const p = parseParam(arr[5][i]);
p.pos = i + offs;
outParams.push(p);
if (p.tag) {
outParamsOpt.push(p);
}
}
}
if (ret && ret.tag) {
outParamsOpt.push(ret);
}
outParamsOpt.sort((p1, p2) => p1.tag - p2.tag); // Sort by tag.
r.outParams = outParams;
r.outParamsOpt = outParamsOpt;
const exceptions = [];
if (arr[6]) {
for (let i = 0; i < arr[6].length; ++i) {
exceptions.push(arr[6][i]);
}
}
r.exceptions = exceptions;
r.sendsClasses = arr[7] === true;
r.returnsClasses = arr[8] === true;
return r;
}
class OpTable {
constructor(ops) {
this.raw = ops;
this.parsed = {};
}
find(name) {
//
// Check if we've already parsed the operation.
//
let op = this.parsed[name];
if (op === undefined && this.raw[name] !== undefined) {
//
// We haven't parsed it yet, but we found a match for the name, so parse it now.
//
op = parseOperation(name, this.raw[name]);
this.parsed[name] = op;
}
return op;
}
}
function unmarshalParams(is, retvalInfo, allParamInfo, optParamInfo, usesClasses, params) {
const readParam = (p, optional) => {
if (optional) {
if (p.isObject) {
throw new MarshalException("cannot unmarshal an optional class");
} else {
params[p.pos] = p.type.readOptional(is, p.tag);
}
} else if (p.isObject) {
is.readValue(obj => {
params[p.pos] = obj;
}, p.type);
} else {
params[p.pos] = p.type.read(is);
}
};
//
// First read all required params.
//
for (let i = 0; i < allParamInfo.length; ++i) {
if (!allParamInfo[i].tag) {
readParam(allParamInfo[i], false);
}
}
//
// Then read a required return value (if any).
//
if (retvalInfo) {
readParam(retvalInfo, false);
}
//
// Then read all optional params.
//
for (let i = 0; i < optParamInfo.length; ++i) {
readParam(optParamInfo[i], true);
}
if (usesClasses) {
is.readPendingValues();
}
}
function marshalParams(os, params, retvalInfo, paramInfo, optParamInfo, usesClasses) {
//
// Write the required params.
//
for (let i = 0; i < paramInfo.length; ++i) {
const p = paramInfo[i];
if (!p.tag) {
p.type.write(os, params[p.pos]);
}
}
//
// retvalInfo should only be provided if there is a non-void required return value.
//
if (retvalInfo) {
retvalInfo.type.write(os, params[retvalInfo.pos]);
}
//
// Write the optional params.
//
for (let i = 0; i < optParamInfo.length; ++i) {
const p = optParamInfo[i];
p.type.writeOptional(os, p.tag, params[p.pos]);
}
if (usesClasses) {
os.writePendingValues();
}
}
// Ensures the operation mode of an incoming request is not idempotent.
function checkNonIdempotent(current) {
if (current.mode !== OperationMode.Normal) {
throw new MarshalException(
`Operation mode mismatch for operation '${current.operation}': received ${current.node} for non-idempotent operation`,
);
}
}
function dispatchImpl(servant, op, request) {
//
// Check to make sure the servant implements the operation.
//
const method = servant[op.servantMethod];
console.assert(typeof method === "function");
if (op.mode === OperationMode.Normal) {
checkNonIdempotent(request.current);
}
//
// Unmarshal the in params (if any).
//
const params = [];
if (op.inParams.length === 0) {
request.inputStream.skipEmptyEncapsulation();
} else {
request.inputStream.startEncapsulation();
unmarshalParams(request.inputStream, undefined, op.inParams, op.inParamsOpt, op.sendsClasses, params);
request.inputStream.endEncapsulation();
}
params.push(request.current);
const marshalFn = function (params) {
const numExpectedResults = op.outParams.length + (op.returns ? 1 : 0);
if (numExpectedResults > 1 && !(params instanceof Array)) {
throw new MarshalException(`operation '${op.servantMethod}' should return an array`);
} else if (numExpectedResults === 1) {
params = [params]; // Wrap a single out parameter in an array.
}
if (op.returns === undefined && op.outParams.length === 0) {
if (params && params.length > 0) {
throw new MarshalException(`operation '${op.servantMethod}' shouldn't return any value`);
} else {
return request.current.createEmptyOutgoingResponse();
}
} else {
let retvalInfo;
if (op.returns && !op.returns.tag) {
retvalInfo = op.returns;
}
return request.current.createOutgoingResponseWithResult(
ostr => marshalParams(ostr, params, retvalInfo, op.outParams, op.outParamsOpt, op.returnsClasses),
op.format,
);
}
};
const results = method.apply(servant, params);
if (results instanceof Promise) {
return results.then(marshalFn);
} else {
return marshalFn(results);
}
}
function getServantMethodFromInterfaces(interfaces, methodName, all) {
let method;
for (let i = 0; method === undefined && i < interfaces.length; ++i) {
const intf = interfaces[i];
method = intf[methodName];
if (method === undefined) {
if (all.indexOf(intf) === -1) {
all.push(intf);
}
if (intf._iceImplements) {
method = getServantMethodFromInterfaces(intf._iceImplements, methodName, all);
}
}
}
return method;
}
const dispatchPrefix = "_iceD_";
function getServantMethod(servantType, name) {
//
// The dispatch method is named _iceD_<Slice name> and is stored in the type (not the prototype).
//
const methodName = dispatchPrefix + name;
//
// First check the servant type.
//
let method = servantType[methodName];
let allInterfaces;
if (method === undefined) {
allInterfaces = [];
//
// Now check the prototypes of the implemented interfaces.
//
let curr = servantType;
while (curr && method === undefined) {
if (curr._iceImplements) {
method = getServantMethodFromInterfaces(curr._iceImplements, methodName, allInterfaces);
}
curr = Object.getPrototypeOf(curr);
}
if (method !== undefined) {
//
// Add the method to the servant's type.
//
servantType[methodName] = method;
}
}
if (method === undefined) {
//
// Next check the op table for the servant's type.
//
let op;
if (servantType._iceOps) {
op = servantType._iceOps.find(name);
}
let source;
if (op === undefined) {
//
// Now check the op tables of the base types.
//
let parent = Object.getPrototypeOf(servantType);
while (op === undefined && parent) {
if (parent._iceOps) {
if ((op = parent._iceOps.find(name)) !== undefined) {
source = parent;
}
}
parent = Object.getPrototypeOf(parent);
}
//
// Now check the op tables of all base interfaces.
//
for (let i = 0; op === undefined && i < allInterfaces.length; ++i) {
const intf = allInterfaces[i];
if (intf._iceOps) {
if ((op = intf._iceOps.find(name)) !== undefined) {
source = intf;
}
}
}
}
if (op !== undefined) {
method = async function (servant, request) {
try {
const result = dispatchImpl(servant, op, request);
if (result instanceof Promise) {
return await result;
}
return result;
} catch (ex) {
const communicator = request.current.adapter.getCommunicator();
console.assert(communicator !== null);
return request.current.createOutgoingResponseWithException(ex, communicator);
}
};
//
// Add the method to the servant type.
//
servantType[methodName] = method;
//
// Also add the method to the type in which the operation was found.
//
if (source) {
source[methodName] = method;
}
}
}
return method;
}
function addProxyOperation(proxyType, name, data) {
const method = data[0] ? data[0] : name;
let op = null;
proxyType.prototype[method] = function (...args) {
//
// Parse the operation data on the first invocation of a proxy method.
//
if (op === null) {
op = parseOperation(name, data);
}
const ctx = args[op.inParams.length]; // The request context is the last argument (if present).
let marshalFn = null;
if (op.inParams.length > 0) {
marshalFn = function (os, params) {
//
// Validate the parameters.
//
for (let i = 0; i < op.inParams.length; ++i) {
const p = op.inParams[i];
const v = params[p.pos];
if (!p.tag || (v !== undefined && v !== null)) {
if (typeof p.type.validate === "function") {
if (!p.type.validate(v)) {
throw new MarshalException(
`invalid value for argument ${i + 1} in operation '${op.servantMethod}'`,
);
}
}
}
}
marshalParams(os, params, undefined, op.inParams, op.inParamsOpt, op.sendsClasses);
};
}
let unmarshalFn = null;
if (op.returns || op.outParams.length > 0) {
unmarshalFn = function (asyncResult) {
//
// The results array holds the out parameters in the following format:
//
// [retval, out1, out2, ..., asyncResult]
//
const results = [];
const is = asyncResult.startReadParams();
let retvalInfo;
if (op.returns && !op.returns.tag) {
retvalInfo = op.returns;
}
unmarshalParams(is, retvalInfo, op.outParams, op.outParamsOpt, op.returnsClasses, results);
asyncResult.endReadParams();
return results.length == 1 ? results[0] : results;
};
}
return ObjectPrx._invoke(
this,
op.name,
op.mode,
op.format,
ctx,
marshalFn,
unmarshalFn,
op.exceptions,
Array.prototype.slice.call(args),
);
};
}
export function defineOperations(classType, proxyType, ids, id, ops) {
if (ops) {
classType._iceOps = new OpTable(ops);
}
classType.prototype.dispatch = function (request) {
//
// Retrieve the dispatch method for this operation.
//
const method = getServantMethod(classType, request.current.operation);
if (method === undefined || typeof method !== "function") {
throw new OperationNotExistException();
}
return method.call(method, this, request);
};
classType.prototype._iceMostDerivedType = function () {
return classType;
};
Object.defineProperty(classType, "_iceIds", {
get: () => ids,
});
Object.defineProperty(classType, "_iceId", {
get: () => id,
});
classType.ice_staticId = function () {
return id;
};
if (proxyType !== undefined) {
if (ops) {
for (const name in ops) {
addProxyOperation(proxyType, name, ops[name]);
}
}
//
// Copy proxy methods from super-interfaces.
//
if (proxyType._implements) {
for (const intf in proxyType._implements) {
const proto = proxyType._implements[intf].prototype;
for (const f in proto) {
if (typeof proto[f] == "function" && proxyType.prototype[f] === undefined) {
proxyType.prototype[f] = proto[f];
}
}
}
}
Object.defineProperty(proxyType, "_id", {
get: () => id,
});
}
}
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