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Separate Wrapper class into its own file.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| // This file is part of nbind, copyright (C) 2014-2016 BusFaster Ltd. | ||
| // Released under the MIT license, see LICENSE. | ||
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| import { | ||
| setEvil, | ||
| defineHidden, | ||
| prepareNamespace | ||
| } from 'emscripten-library-decorator'; | ||
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| import {_nbind as _globals} from './Globals'; | ||
| import {_nbind as _class} from './BindClass'; | ||
| import {_nbind as _gc} from './GC'; | ||
| import {StateFlags, TypeFlags, PolicyTbl} from '../Type'; | ||
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| // Let decorators run eval in current scope to read function source code. | ||
| setEvil((code: string) => eval(code)); | ||
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| const _defineHidden = defineHidden; | ||
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| export namespace _nbind { | ||
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| export var ptrMarker: typeof _class.ptrMarker; | ||
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| export var mark: typeof _gc.mark; | ||
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| /** Base class for wrapped instances of bound C++ classes. | ||
| * Note that some hacks avoid ever constructing this, | ||
| * so initializing values inside its definition won't work. */ | ||
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| export class Wrapper { | ||
| persist() { this.__nbindState |= StateFlags.isPersistent; } | ||
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| free?(): void | ||
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| /* tslint:disable:variable-name */ | ||
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| __nbindFlags: TypeFlags; | ||
| __nbindState: StateFlags; | ||
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| /** Dynamically set by _nbind_register_constructor. | ||
| * Calls the C++ constructor and returns a numeric heap pointer. */ | ||
| __nbindConstructor: (...args: any[]) => number; | ||
| __nbindValueConstructor: _globals.Func; | ||
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| __nbindPtr: number; | ||
| __nbindShared: number; | ||
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| /* tslint:enable:variable-name */ | ||
| } | ||
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| export function makeBound( | ||
| policyTbl: PolicyTbl, | ||
| bindClass: _class.BindClass | ||
| ) { | ||
| class Bound extends Wrapper { | ||
| constructor(marker: {}, flags: number, ptr: number, shared?: number) { | ||
| // super() never gets called here but TypeScript 1.8 requires it. | ||
| if((false && super()) || !(this instanceof Bound)) { | ||
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| // Constructor called without new operator. | ||
| // Make correct call with given arguments. | ||
| // Few ways to do this work. This one should. See: | ||
| // http://stackoverflow.com/questions/1606797 | ||
| // /use-of-apply-with-new-operator-is-this-possible | ||
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| return(new (Function.prototype.bind.apply( | ||
| Bound, // arguments.callee | ||
| Array.prototype.concat.apply([null], arguments) | ||
| ))()); | ||
| } | ||
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| let nbindFlags = flags; | ||
| let nbindPtr = ptr; | ||
| let nbindShared = shared; | ||
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| if(marker !== ptrMarker) { | ||
| let wirePtr = this.__nbindConstructor.apply(this, arguments); | ||
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| nbindFlags = TypeFlags.isSharedClassPtr | TypeFlags.isSharedPtr; | ||
| nbindShared = HEAPU32[wirePtr / 4]; | ||
| nbindPtr = HEAPU32[wirePtr / 4 + 1]; | ||
| } | ||
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| const spec = { | ||
| configurable: true, | ||
| enumerable: false, | ||
| value: null as any, | ||
| writable: false | ||
| }; | ||
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| const propTbl: { [key: string]: any } = { | ||
| '__nbindFlags': nbindFlags, | ||
| '__nbindPtr': nbindPtr | ||
| }; | ||
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| if(nbindShared) { | ||
| propTbl['__nbindShared'] = nbindShared; | ||
| mark(this); | ||
| } | ||
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| for(let key of Object.keys(propTbl)) { | ||
| spec.value = propTbl[key]; | ||
| Object.defineProperty(this, key, spec); | ||
| } | ||
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| _defineHidden(StateFlags.none)(this, '__nbindState'); | ||
| } | ||
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| free() { | ||
| bindClass.destroy.call(this, this.__nbindShared, this.__nbindFlags); | ||
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| this.__nbindState |= StateFlags.isDeleted; | ||
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| disableMember(this, '__nbindShared'); | ||
| disableMember(this, '__nbindPtr'); | ||
| } | ||
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| @_defineHidden() | ||
| // tslint:disable-next-line:variable-name | ||
| __nbindConstructor: (...args: any[]) => number; | ||
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| @_defineHidden() | ||
| // tslint:disable-next-line:variable-name | ||
| __nbindValueConstructor: _globals.Func; | ||
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| @_defineHidden(policyTbl) | ||
| // tslint:disable-next-line:variable-name | ||
| __nbindPolicies: { [name: string]: boolean }; | ||
| } | ||
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| return(Bound); | ||
| } | ||
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| function disableMember(obj: Wrapper, name: string) { | ||
| function die() { throw(new Error('Accessing deleted object')); } | ||
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| Object.defineProperty(obj, name, { | ||
| configurable: false, | ||
| enumerable: false, | ||
| get: die, | ||
| set: die | ||
| }); | ||
| } | ||
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| @prepareNamespace('_nbind') | ||
| export class _ {} // tslint:disable-line:class-name | ||
| } |
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