git ssb - nit · wanderer🌟/wasm-persist@ef2bd6af

Commit ef2bd6aff34a889b871ba0df64660c209670a621

nit

Signed-off-by: wanderer <mjbecze@gmail.com>

wanderer committed on 4/25/2018, 4:52:59 AM

Files changed

.travis.yml	added
LICENSE	added
README.md	added
docs/index.md	added
index.js	added
injectGettersSetters.js	added
package-lock.json	added
package.json	added
tests/index.js	added
tests/wasm/customSections.wasm	added
tests/wasm/doubleGlobals.wasm	added
tests/wasm/empty.wasm	added
tests/wasm/singleFunction.wasm	added
tests/wasm/singleGlobal.wasm	added
tests/wasm/singleI32Global.wasm	added
tests/wasm/singleI64Global.wasm	added
tests/wasm/singleImport.wasm	added
tests/wasm/singleMemory.wasm	added
tests/wasm/singleTable.wasm	added
tests/wasm/singleType.wasm	added
tests/wast/doubleGlobals.wast	added
tests/wast/empty.wast	added
tests/wast/singleFunction.wast	added
tests/wast/singleI32Global.wast	added
tests/wast/singleI64Global.wast	added
tests/wast/singleImport.wast	added
tests/wast/singleMemory.wast	added
tests/wast/singleTable.wast	added
tests/wast/singleType.wast	added
tests/wast2wasm.js	added

.travis.ymlView
		@@ -1,0 +1,24 @@
	1 …	+language: node_js
	2 …	+node_js:
	3 …	+ - "9"
	4 …	+env:
	5 …	+ global:
	6 …	+ - CXX=g++-4.8
	7 …	+ matrix:
	8 …	+ - TEST_SUITE=test
	9 …	+addons:
	10 …	+ apt:
	11 …	+ sources:
	12 …	+ - ubuntu-toolchain-r-test
	13 …	+ packages:
	14 …	+ - g++-4.8
	15 …	+matrix:
	16 …	+ fast_finish: true
	17 …	+ include:
	18 …	+ - os: linux
	19 …	+ node_js: "9"
	20 …	+ env: TEST_SUITE=coveralls
	21 …	+ - os: linux
	22 …	+ node_js: "9"
	23 …	+ env: TEST_SUITE=lint
	24 …	+script: npm run $TEST_SUITE

LICENSEView
		@@ -1,0 +1,373 @@
	1 …	+Mozilla Public License Version 2.0
	2 …	+==================================
	3 …	+
	4 …	+1. Definitions
	5 …	+--------------
	6 …	+
	7 …	+1.1. "Contributor"
	8 …	+ means each individual or legal entity that creates, contributes to
	9 …	+ the creation of, or owns Covered Software.
	10 …	+
	11 …	+1.2. "Contributor Version"
	12 …	+ means the combination of the Contributions of others (if any) used
	13 …	+ by a Contributor and that particular Contributor's Contribution.
	14 …	+
	15 …	+1.3. "Contribution"
	16 …	+ means Covered Software of a particular Contributor.
	17 …	+
	18 …	+1.4. "Covered Software"
	19 …	+ means Source Code Form to which the initial Contributor has attached
	20 …	+ the notice in Exhibit A, the Executable Form of such Source Code
	21 …	+ Form, and Modifications of such Source Code Form, in each case
	22 …	+ including portions thereof.
	23 …	+
	24 …	+1.5. "Incompatible With Secondary Licenses"
	25 …	+ means
	26 …	+
	27 …	+ (a) that the initial Contributor has attached the notice described
	28 …	+ in Exhibit B to the Covered Software; or
	29 …	+
	30 …	+ (b) that the Covered Software was made available under the terms of
	31 …	+ version 1.1 or earlier of the License, but not also under the
	32 …	+ terms of a Secondary License.
	33 …	+
	34 …	+1.6. "Executable Form"
	35 …	+ means any form of the work other than Source Code Form.
	36 …	+
	37 …	+1.7. "Larger Work"
	38 …	+ means a work that combines Covered Software with other material, in
	39 …	+ a separate file or files, that is not Covered Software.
	40 …	+
	41 …	+1.8. "License"
	42 …	+ means this document.
	43 …	+
	44 …	+1.9. "Licensable"
	45 …	+ means having the right to grant, to the maximum extent possible,
	46 …	+ whether at the time of the initial grant or subsequently, any and
	47 …	+ all of the rights conveyed by this License.
	48 …	+
	49 …	+1.10. "Modifications"
	50 …	+ means any of the following:
	51 …	+
	52 …	+ (a) any file in Source Code Form that results from an addition to,
	53 …	+ deletion from, or modification of the contents of Covered
	54 …	+ Software; or
	55 …	+
	56 …	+ (b) any new file in Source Code Form that contains any Covered
	57 …	+ Software.
	58 …	+
	59 …	+1.11. "Patent Claims" of a Contributor
	60 …	+ means any patent claim(s), including without limitation, method,
	61 …	+ process, and apparatus claims, in any patent Licensable by such
	62 …	+ Contributor that would be infringed, but for the grant of the
	63 …	+ License, by the making, using, selling, offering for sale, having
	64 …	+ made, import, or transfer of either its Contributions or its
	65 …	+ Contributor Version.
	66 …	+
	67 …	+1.12. "Secondary License"
	68 …	+ means either the GNU General Public License, Version 2.0, the GNU
	69 …	+ Lesser General Public License, Version 2.1, the GNU Affero General
	70 …	+ Public License, Version 3.0, or any later versions of those
	71 …	+ licenses.
	72 …	+
	73 …	+1.13. "Source Code Form"
	74 …	+ means the form of the work preferred for making modifications.
	75 …	+
	76 …	+1.14. "You" (or "Your")
	77 …	+ means an individual or a legal entity exercising rights under this
	78 …	+ License. For legal entities, "You" includes any entity that
	79 …	+ controls, is controlled by, or is under common control with You. For
	80 …	+ purposes of this definition, "control" means (a) the power, direct
	81 …	+ or indirect, to cause the direction or management of such entity,
	82 …	+ whether by contract or otherwise, or (b) ownership of more than
	83 …	+ fifty percent (50%) of the outstanding shares or beneficial
	84 …	+ ownership of such entity.
	85 …	+
	86 …	+2. License Grants and Conditions
	87 …	+--------------------------------
	88 …	+
	89 …	+2.1. Grants
	90 …	+
	91 …	+Each Contributor hereby grants You a world-wide, royalty-free,
	92 …	+non-exclusive license:
	93 …	+
	94 …	+(a) under intellectual property rights (other than patent or trademark)
	95 …	+ Licensable by such Contributor to use, reproduce, make available,
	96 …	+ modify, display, perform, distribute, and otherwise exploit its
	97 …	+ Contributions, either on an unmodified basis, with Modifications, or
	98 …	+ as part of a Larger Work; and
	99 …	+
	100 …	+(b) under Patent Claims of such Contributor to make, use, sell, offer
	101 …	+ for sale, have made, import, and otherwise transfer either its
	102 …	+ Contributions or its Contributor Version.
	103 …	+
	104 …	+2.2. Effective Date
	105 …	+
	106 …	+The licenses granted in Section 2.1 with respect to any Contribution
	107 …	+become effective for each Contribution on the date the Contributor first
	108 …	+distributes such Contribution.
	109 …	+
	110 …	+2.3. Limitations on Grant Scope
	111 …	+
	112 …	+The licenses granted in this Section 2 are the only rights granted under
	113 …	+this License. No additional rights or licenses will be implied from the
	114 …	+distribution or licensing of Covered Software under this License.
	115 …	+Notwithstanding Section 2.1(b) above, no patent license is granted by a
	116 …	+Contributor:
	117 …	+
	118 …	+(a) for any code that a Contributor has removed from Covered Software;
	119 …	+ or
	120 …	+
	121 …	+(b) for infringements caused by: (i) Your and any other third party's
	122 …	+ modifications of Covered Software, or (ii) the combination of its
	123 …	+ Contributions with other software (except as part of its Contributor
	124 …	+ Version); or
	125 …	+
	126 …	+(c) under Patent Claims infringed by Covered Software in the absence of
	127 …	+ its Contributions.
	128 …	+
	129 …	+This License does not grant any rights in the trademarks, service marks,
	130 …	+or logos of any Contributor (except as may be necessary to comply with
	131 …	+the notice requirements in Section 3.4).
	132 …	+
	133 …	+2.4. Subsequent Licenses
	134 …	+
	135 …	+No Contributor makes additional grants as a result of Your choice to
	136 …	+distribute the Covered Software under a subsequent version of this
	137 …	+License (see Section 10.2) or under the terms of a Secondary License (if
	138 …	+permitted under the terms of Section 3.3).
	139 …	+
	140 …	+2.5. Representation
	141 …	+
	142 …	+Each Contributor represents that the Contributor believes its
	143 …	+Contributions are its original creation(s) or it has sufficient rights
	144 …	+to grant the rights to its Contributions conveyed by this License.
	145 …	+
	146 …	+2.6. Fair Use
	147 …	+
	148 …	+This License is not intended to limit any rights You have under
	149 …	+applicable copyright doctrines of fair use, fair dealing, or other
	150 …	+equivalents.
	151 …	+
	152 …	+2.7. Conditions
WritePreview
	153 …	+
	154 …	+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
	155 …	+in Section 2.1.
	156 …	+
	157 …	+3. Responsibilities
	158 …	+-------------------
	159 …	+
	160 …	+3.1. Distribution of Source Form
	161 …	+
	162 …	+All distribution of Covered Software in Source Code Form, including any
	163 …	+Modifications that You create or to which You contribute, must be under
	164 …	+the terms of this License. You must inform recipients that the Source
	165 …	+Code Form of the Covered Software is governed by the terms of this
	166 …	+License, and how they can obtain a copy of this License. You may not
	167 …	+attempt to alter or restrict the recipients' rights in the Source Code
	168 …	+Form.
	169 …	+
	170 …	+3.2. Distribution of Executable Form
	171 …	+
	172 …	+If You distribute Covered Software in Executable Form then:
	173 …	+
	174 …	+(a) such Covered Software must also be made available in Source Code
	175 …	+ Form, as described in Section 3.1, and You must inform recipients of
	176 …	+ the Executable Form how they can obtain a copy of such Source Code
	177 …	+ Form by reasonable means in a timely manner, at a charge no more
	178 …	+ than the cost of distribution to the recipient; and
	179 …	+
	180 …	+(b) You may distribute such Executable Form under the terms of this
	181 …	+ License, or sublicense it under different terms, provided that the
	182 …	+ license for the Executable Form does not attempt to limit or alter
	183 …	+ the recipients' rights in the Source Code Form under this License.
	184 …	+
	185 …	+3.3. Distribution of a Larger Work
	186 …	+
	187 …	+You may create and distribute a Larger Work under terms of Your choice,
	188 …	+provided that You also comply with the requirements of this License for
	189 …	+the Covered Software. If the Larger Work is a combination of Covered
	190 …	+Software with a work governed by one or more Secondary Licenses, and the
	191 …	+Covered Software is not Incompatible With Secondary Licenses, this
	192 …	+License permits You to additionally distribute such Covered Software
	193 …	+under the terms of such Secondary License(s), so that the recipient of
	194 …	+the Larger Work may, at their option, further distribute the Covered
	195 …	+Software under the terms of either this License or such Secondary
	196 …	+License(s).
	197 …	+
	198 …	+3.4. Notices
	199 …	+
	200 …	+You may not remove or alter the substance of any license notices
	201 …	+(including copyright notices, patent notices, disclaimers of warranty,
	202 …	+or limitations of liability) contained within the Source Code Form of
	203 …	+the Covered Software, except that You may alter any license notices to
	204 …	+the extent required to remedy known factual inaccuracies.
	205 …	+
	206 …	+3.5. Application of Additional Terms
	207 …	+
	208 …	+You may choose to offer, and to charge a fee for, warranty, support,
	209 …	+indemnity or liability obligations to one or more recipients of Covered
	210 …	+Software. However, You may do so only on Your own behalf, and not on
	211 …	+behalf of any Contributor. You must make it absolutely clear that any
	212 …	+such warranty, support, indemnity, or liability obligation is offered by
	213 …	+You alone, and You hereby agree to indemnify every Contributor for any
	214 …	+liability incurred by such Contributor as a result of warranty, support,
	215 …	+indemnity or liability terms You offer. You may include additional
	216 …	+disclaimers of warranty and limitations of liability specific to any
	217 …	+jurisdiction.
	218 …	+
	219 …	+4. Inability to Comply Due to Statute or Regulation
	220 …	+---------------------------------------------------
	221 …	+
	222 …	+If it is impossible for You to comply with any of the terms of this
	223 …	+License with respect to some or all of the Covered Software due to
	224 …	+statute, judicial order, or regulation then You must: (a) comply with
	225 …	+the terms of this License to the maximum extent possible; and (b)
	226 …	+describe the limitations and the code they affect. Such description must
	227 …	+be placed in a text file included with all distributions of the Covered
	228 …	+Software under this License. Except to the extent prohibited by statute
	229 …	+or regulation, such description must be sufficiently detailed for a
	230 …	+recipient of ordinary skill to be able to understand it.
	231 …	+
	232 …	+5. Termination
	233 …	+--------------
	234 …	+
	235 …	+5.1. The rights granted under this License will terminate automatically
	236 …	+if You fail to comply with any of its terms. However, if You become
	237 …	+compliant, then the rights granted under this License from a particular
	238 …	+Contributor are reinstated (a) provisionally, unless and until such
	239 …	+Contributor explicitly and finally terminates Your grants, and (b) on an
	240 …	+ongoing basis, if such Contributor fails to notify You of the
	241 …	+non-compliance by some reasonable means prior to 60 days after You have
	242 …	+come back into compliance. Moreover, Your grants from a particular
	243 …	+Contributor are reinstated on an ongoing basis if such Contributor
	244 …	+notifies You of the non-compliance by some reasonable means, this is the
	245 …	+first time You have received notice of non-compliance with this License
	246 …	+from such Contributor, and You become compliant prior to 30 days after
	247 …	+Your receipt of the notice.
	248 …	+
	249 …	+5.2. If You initiate litigation against any entity by asserting a patent
	250 …	+infringement claim (excluding declaratory judgment actions,
	251 …	+counter-claims, and cross-claims) alleging that a Contributor Version
	252 …	+directly or indirectly infringes any patent, then the rights granted to
	253 …	+You by any and all Contributors for the Covered Software under Section
	254 …	+2.1 of this License shall terminate.
	255 …	+
	256 …	+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
	257 …	+end user license agreements (excluding distributors and resellers) which
	258 …	+have been validly granted by You or Your distributors under this License
	259 …	+prior to termination shall survive termination.
	260 …	+
	261 …	+************************************************************************
	262 …	+* *
	263 …	+* 6. Disclaimer of Warranty *
	264 …	+* ------------------------- *
	265 …	+* *
	266 …	+* Covered Software is provided under this License on an "as is" *
	267 …	+* basis, without warranty of any kind, either expressed, implied, or *
	268 …	+* statutory, including, without limitation, warranties that the *
	269 …	+* Covered Software is free of defects, merchantable, fit for a *
	270 …	+* particular purpose or non-infringing. The entire risk as to the *
	271 …	+* quality and performance of the Covered Software is with You. *
	272 …	+* Should any Covered Software prove defective in any respect, You *
	273 …	+* (not any Contributor) assume the cost of any necessary servicing, *
	274 …	+* repair, or correction. This disclaimer of warranty constitutes an *
	275 …	+* essential part of this License. No use of any Covered Software is *
	276 …	+* authorized under this License except under this disclaimer. *
	277 …	+* *
	278 …	+************************************************************************
	279 …	+
	280 …	+************************************************************************
	281 …	+* *
	282 …	+* 7. Limitation of Liability *
	283 …	+* -------------------------- *
	284 …	+* *
	285 …	+* Under no circumstances and under no legal theory, whether tort *
	286 …	+* (including negligence), contract, or otherwise, shall any *
	287 …	+* Contributor, or anyone who distributes Covered Software as *
	288 …	+* permitted above, be liable to You for any direct, indirect, *
	289 …	+* special, incidental, or consequential damages of any character *
	290 …	+* including, without limitation, damages for lost profits, loss of *
	291 …	+* goodwill, work stoppage, computer failure or malfunction, or any *
	292 …	+* and all other commercial damages or losses, even if such party *
	293 …	+* shall have been informed of the possibility of such damages. This *
	294 …	+* limitation of liability shall not apply to liability for death or *
	295 …	+* personal injury resulting from such party's negligence to the *
	296 …	+* extent applicable law prohibits such limitation. Some *
	297 …	+* jurisdictions do not allow the exclusion or limitation of *
	298 …	+* incidental or consequential damages, so this exclusion and *
	299 …	+* limitation may not apply to You. *
	300 …	+* *
	301 …	+************************************************************************
	302 …	+
	303 …	+8. Litigation
	304 …	+-------------
	305 …	+
	306 …	+Any litigation relating to this License may be brought only in the
	307 …	+courts of a jurisdiction where the defendant maintains its principal
	308 …	+place of business and such litigation shall be governed by laws of that
	309 …	+jurisdiction, without reference to its conflict-of-law provisions.
	310 …	+Nothing in this Section shall prevent a party's ability to bring
	311 …	+cross-claims or counter-claims.
	312 …	+
	313 …	+9. Miscellaneous
	314 …	+----------------
	315 …	+
	316 …	+This License represents the complete agreement concerning the subject
	317 …	+matter hereof. If any provision of this License is held to be
	318 …	+unenforceable, such provision shall be reformed only to the extent
	319 …	+necessary to make it enforceable. Any law or regulation which provides
	320 …	+that the language of a contract shall be construed against the drafter
	321 …	+shall not be used to construe this License against a Contributor.
	322 …	+
	323 …	+10. Versions of the License
	324 …	+---------------------------
	325 …	+
	326 …	+10.1. New Versions
	327 …	+
	328 …	+Mozilla Foundation is the license steward. Except as provided in Section
	329 …	+10.3, no one other than the license steward has the right to modify or
	330 …	+publish new versions of this License. Each version will be given a
	331 …	+distinguishing version number.
	332 …	+
	333 …	+10.2. Effect of New Versions
	334 …	+
	335 …	+You may distribute the Covered Software under the terms of the version
	336 …	+of the License under which You originally received the Covered Software,
	337 …	+or under the terms of any subsequent version published by the license
	338 …	+steward.
	339 …	+
	340 …	+10.3. Modified Versions
	341 …	+
	342 …	+If you create software not governed by this License, and you want to
	343 …	+create a new license for such software, you may create and use a
	344 …	+modified version of this License if you rename the license and remove
	345 …	+any references to the name of the license steward (except to note that
	346 …	+such modified license differs from this License).
	347 …	+
	348 …	+10.4. Distributing Source Code Form that is Incompatible With Secondary
	349 …	+Licenses
	350 …	+
	351 …	+If You choose to distribute Source Code Form that is Incompatible With
	352 …	+Secondary Licenses under the terms of this version of the License, the
	353 …	+notice described in Exhibit B of this License must be attached.
	354 …	+
	355 …	+Exhibit A - Source Code Form License Notice
	356 …	+-------------------------------------------
	357 …	+
	358 …	+ This Source Code Form is subject to the terms of the Mozilla Public
	359 …	+ License, v. 2.0. If a copy of the MPL was not distributed with this
	360 …	+ file, You can obtain one at http://mozilla.org/MPL/2.0/.
	361 …	+
	362 …	+If it is not possible or desirable to put the notice in a particular
	363 …	+file, then You may include the notice in a location (such as a LICENSE
	364 …	+file in a relevant directory) where a recipient would be likely to look
	365 …	+for such a notice.
	366 …	+
	367 …	+You may add additional accurate notices of copyright ownership.
	368 …	+
	369 …	+Exhibit B - "Incompatible With Secondary Licenses" Notice
	370 …	+---------------------------------------------------------
	371 …	+
	372 …	+ This Source Code Form is "Incompatible With Secondary Licenses", as
	373 …	+ defined by the Mozilla Public License, v. 2.0.

README.mdView
		@@ -1,0 +1,46 @@
	1 …	+# SYNOPSIS
	2 …	+[![NPM Package](https://img.shields.io/npm/v/wasm-persist.svg?style=flat-square)](https://www.npmjs.org/package/wasm-persist)
	3 …	+[![Build Status](https://img.shields.io/travis/dfinity/wasm-persist.svg?branch=master&style=flat-square)](https://travis-ci.org/dfinity/wasm-persist)
	4 …	+[![Coverage Status](https://img.shields.io/coveralls/dfinity/wasm-persist.svg?style=flat-square)](https://coveralls.io/r/dfinity/wasm-persist)
	5 …	+
	6 …	+[![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)
	7 …	+
	8 …	+This allows you to hibernate a WebAssembly instance and later start it up again
	9 …	+at the exact place you left off
	10 …	+
	11 …	+# INSTALL
	12 …	+`npm install wasm-persist`
	13 …	+
	14 …	+# USAGE
	15 …	+
	16 …	+```javascript
	17 …	+const persist = require('wasm-persist')
	18 …	+...
	19 …	+wasm = persit.prepare(wasm)
	20 …	+const {instance} = await WebAssembly.instantiate(wasm)
	21 …	+// call some exported functions on your instance
	22 …	+// then when you are done
	23 …	+const state = persit.hibernate(instance)
	24 …	+
	25 …	+...
	26 …	+
	27 …	+// later you can revive the wasm instance
	28 …	+const {instance} = await WebAssembly.instantiate(wasm)
	29 …	+// just call persist.resume with the old state
	30 …	+persit.resume(instance, state)
	31 …	+```
	32 …	+# DESCIPTION
	33 …	+The Idea for wasm-perist came from [orthongal persistance](https://en.wikipedia.org/wiki/Persistence_(computer_science)#Orthogonal_or_transparent_persistence)
	34 …	+wasm-persist injects getter and setter function for each global and exports the
	35 …	+memory and table if they exist. Hibernate calls the getters and creates an Object
	36 …	+that contains the memory (as a typedArray) the globals and the function table.
	37 …	+Resume does the opposite and calls the setters for the globals and updates the
	38 …	+memory and the table. Forgein function on the table are not handled currently.
	39 …	+
	40 …	+# API
	41 …	+[./docs/](./docs/index.md)
	42 …	+
	43 …	+# LICENSE
	44 …	+[MPL-2.0][LICENSE]
	45 …	+
	46 …	+[LICENSE]: https://tldrlegal.com/license/mozilla-public-license-2.0-(mpl-2)

docs/index.mdView
		@@ -1,0 +1,62 @@
	1 …	+<!-- Generated by documentation.js. Update this documentation by updating the source code. -->
	2 …	+
	3 …	+### Table of Contents
	4 …	+
	5 …	+- [prepare][1]
	6 …	+- [hibernate][2]
	7 …	+- [resume][3]
	8 …	+
	9 …	+## prepare
	10 …	+
	11 …	+Prepares a binary by injecting getter and setter function for memory, globals and tables.
	12 …	+
	13 …	+Parameters
	14 …	+
	15 …	+- `binary` [ArrayBuffer][4] a wasm binary
	16 …	+- `include` [Object][5] (optional, default `{memory:true,table:true}`)
	17 …	+ - `include.memory` [Boolean][6] whether or not to included memory (optional, default `true`)
	18 …	+ - `include.table` [Boolean][6] whether or not to included the function table (optional, default `true`)
	19 …	+ - `include.globals` [Array][7]<[Boolean][6]> whether or not to
	20 …	+ included a given global. Each index in the array stands for a global index.
	21 …	+ Indexes that are set to false or left undefined will not be persisted. By
	22 …	+ default all globals are persisted. (optional, default `Array.<true>`)
	23 …	+- `symbol` [String][8] a sting used to prefix the injected setter and getter functions (optional, default `'_'`)
	24 …	+
	25 …	+Returns [ArrayBuffer][4] the resulting wasm binary
	26 …	+
	27 …	+## hibernate
	28 …	+
	29 …	+Given a wasm Instance this will produce an Object containing the current state of
	30 …	+the instance
	31 …	+
	32 …	+Parameters
	33 …	+
	34 …	+- `instance` Webassembly.Instance
	35 …	+- `symbol` [String][8] the symbol that will be used to find the injected functions (optional, default `'_'`)
	36 …	+
	37 …	+Returns [Object][5] the state of the wasm instance
	38 …	+
	39 …	+## resume
	40 …	+
	41 …	+resumes a prevously hibranted webassembly instance
	42 …	+
	43 …	+Parameters
	44 …	+
	45 …	+- `instance` WebAssemby.Instance
	46 …	+- `state` [Object][5] the pervous state of the wasm instance
	47 …	+
	48 …	+[1]: #prepare
	49 …	+
	50 …	+[2]: #hibernate
	51 …	+
	52 …	+[3]: #resume
	53 …	+
	54 …	+[4]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
	55 …	+
	56 …	+[5]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object
	57 …	+
	58 …	+[6]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean
	59 …	+
	60 …	+[7]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array
	61 …	+
	62 …	+[8]: https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String

index.jsView
		@@ -1,0 +1,108 @@
	1 …	+const inject = require('./injectGettersSetters.js')
	2 …	+
	3 …	+/**
	4 …	+ * Prepares a binary by injecting getter and setter function for memory, globals and tables.
	5 …	+ * @param {ArrayBuffer} binary - a wasm binary
	6 …	+ * @param {Object} include
	7 …	+ * @param {Boolean} [include.memory=true] - whether or not to included memory
	8 …	+ * @param {Boolean} [include.table=true] - whether or not to included the function table
	9 …	+ * @param {Array.<Boolean>} [include.globals=Array.<true>] - whether or not to
	10 …	+ * included a given global. Each index in the array stands for a global index.
	11 …	+ * Indexes that are set to false or left undefined will not be persisted. By
	12 …	+ * default all globals are persisted.
	13 …	+ * @param {String} [symbol = '_'] - a sting used to prefix the injected setter and getter functions
	14 …	+ * @return {ArrayBuffer} the resulting wasm binary
	15 …	+ */
	16 …	+function prepare (binary, include = {memory: true, table: true}, symbol = '_') {
	17 …	+ return inject(binary, include, symbol)
	18 …	+}
	19 …	+
	20 …	+/**
	21 …	+ * Given a wasm Instance this will produce an Object containing the current state of
	22 …	+ * the instance
	23 …	+ * @param {Webassembly.Instance} instance
	24 …	+ * @param {String} symbol - the symbol that will be used to find the injected functions
	25 …	+ * @returns {Object} the state of the wasm instance
	26 …	+ */
	27 …	+function hibernate (instance, symbol = '_') {
	28 …	+ const json = {
	29 …	+ globals: [],
	30 …	+ table: [],
	31 …	+ symbol
	32 …	+ }
	33 …	+ for (const key in instance.exports) {
	34 …	+ const val = instance.exports[key]
	35 …	+ if (key.startsWith(symbol)) {
	36 …	+ const keyElems = key.slice(symbol.length).split('_')
	37 …	+ // save the memory
	38 …	+ if (val instanceof WebAssembly.Memory) {
	39 …	+ json.memory = new Uint32Array(val.buffer)
	40 …	+ } else if (val instanceof WebAssembly.Table) {
	41 …	+ // mark the tables, (do something for external function?)
	42 …	+ // the external functions should have a callback
	43 …	+ for (let i = 0; i < val.length; i++) {
	44 …	+ const func = val.get(i)
	45 …	+ if (func === instance.exports[`${symbol}func_${func.name}`]) {
	46 …	+ json.table.push(func.name)
	47 …	+ }
	48 …	+ }
	49 …	+ } else if (keyElems[0] === 'global' && keyElems[1] === 'getter') {
	50 …	+ // save the globals
	51 …	+ const last = keyElems.pop()
	52 …	+ if (last === 'high') {
	53 …	+ json.globals.push([instance.exports[key]()])
	54 …	+ } else if (last === 'low') {
	55 …	+ json.globals[json.globals.length - 1].push(instance.exports[key]())
	56 …	+ } else {
	57 …	+ json.globals.push(instance.exports[key]())
	58 …	+ }
	59 …	+ }
	60 …	+ }
	61 …	+ }
	62 …	+ instance.__hibrenated = true
	63 …	+ return json
	64 …	+}
	65 …	+
	66 …	+/**
	67 …	+ * resumes a prevously hibranted webassembly instance
	68 …	+ * @param {WebAssemby.Instance} instance
	69 …	+ * @param {Object} state - the pervous state of the wasm instance
	70 …	+ * @retrun {WebAssembly.Instance}
	71 …	+ */
	72 …	+function resume (instance, state) {
	73 …	+ if (instance.__hibrenated) {
	74 …	+ instance.__hibrenated = false
	75 …	+ } else {
	76 …	+ // initailize memory
	77 …	+ const mem = instance.exports[`${state.symbol}memory`]
	78 …	+ if (mem) {
	79 …	+ // console.log(mem.length)
	80 …	+ (new Uint32Array(mem.buffer)).set(state.memory, 0)
	81 …	+ }
	82 …	+
	83 …	+ // initailize table
	84 …	+ if (instance.exports._table) {
	85 …	+ for (const index in state.table) {
	86 …	+ const funcIndex = state.table[index]
	87 …	+ instance.exports._table.set(index, instance.exports[`${state.symbol}func_${funcIndex}`])
	88 …	+ }
	89 …	+ }
	90 …	+
	91 …	+ // intialize globals
	92 …	+ for (const index in state.globals) {
	93 …	+ const val = state.globals[index]
	94 …	+ if (Array.isArray(val)) {
	95 …	+ instance.exports[`${state.symbol}global_setter_i64_${index}`](val[1], val[0])
	96 …	+ } else {
	97 …	+ instance.exports[`${state.symbol}global_setter_i32_${index}`](val)
	98 …	+ }
	99 …	+ }
	100 …	+ }
	101 …	+ return instance
	102 …	+}
	103 …	+
	104 …	+module.exports = {
	105 …	+ prepare,
	106 …	+ hibernate,
	107 …	+ resume
	108 …	+}

injectGettersSetters.jsView
		@@ -1,0 +1,180 @@
	1 …	+const leb128 = require('leb128').unsigned
	2 …	+const Pipe = require('buffer-pipe')
	3 …	+const Iterator = require('wasm-json-toolkit').Iterator
	4 …	+
	5 …	+const EXTERNAL_KIND = {
	6 …	+ 'function': 0,
	7 …	+ 'table': 1,
	8 …	+ 'memory': 2,
	9 …	+ 'global': 3
	10 …	+}
	11 …	+
	12 …	+module.exports = function prepare (wasm, include, symbol) {
	13 …	+ let globalI64SetterIndex, globalI32SetterIndex, globalGetterIndex, funcSection
	14 …	+ let numOfFuncs = 0
	15 …	+ let numOfImports = 0
	16 …	+ const addedCodeEntries = []
	17 …	+ const globalsGetterSetters = []
	18 …	+
	19 …	+ const needExporting = {
	20 …	+ 'function': [],
	21 …	+ 'global': []
	22 …	+ }
	23 …	+
	24 …	+ const it = new Iterator(wasm)
	25 …	+
	26 …	+ for (const section of it) {
	27 …	+ if (section.type === 'type') {
	28 …	+ const numOfTypes = section.count
	29 …	+ // form: func, 1 param, i32, no return
	30 …	+ const globalI32SetterType = Buffer.from([0x60, 0x01, 0x7f, 0x0])
	31 …	+ // form: func, 2 param, i32, i32, no return
	32 …	+ const globalI64SetterType = Buffer.from([0x60, 0x02, 0x7f, 0x7f, 0x0])
	33 …	+ // form: func, 0 param, i32, 1 return
	34 …	+ const globalGetterType = Buffer.from([0x60, 0x00, 0x1, 0x7f])
	35 …	+ section.appendEntries([globalI32SetterType, globalI64SetterType, globalGetterType])
	36 …	+
	37 …	+ globalI32SetterIndex = leb128.encode(numOfTypes)
	38 …	+ globalI64SetterIndex = leb128.encode(numOfTypes + 1)
	39 …	+ globalGetterIndex = leb128.encode(numOfTypes + 2)
	40 …	+ } else if (section.type === 'import') {
	41 …	+ // parse the import section to build the function indexes
	42 …	+ const json = section.toJSON()
	43 …	+ numOfImports = json.entries.filter(entry => entry.kind === 'function').length
	44 …	+ } else if (section.type === 'function') {
	45 …	+ // mark functions to be exported
	46 …	+ numOfFuncs = section.count
	47 …	+ funcSection = section
	48 …	+ needExporting['function'] = Array(section.count).fill(true)
	49 …	+ } else if (section.type === 'table') {
	50 …	+ needExporting['table'] = true && include.table
	51 …	+ } else if (section.type === 'memory') {
	52 …	+ needExporting['memory'] = true && include.memory
	53 …	+ } else if (section.type === 'global') {
	54 …	+ const json = section.toJSON()
	55 …	+ const addedFuncs = []
	56 …	+ if (!include.globals) {
	57 …	+ include.globals = new Array(json.entries.length).fill(true)
	58 …	+ }
	59 …	+ for (const i in json.entries) {
	60 …	+ const type = json.entries[i].type
	61 …	+ const lebIndex = leb128.encode(i)
	62 …	+ if (type.mutability && include.globals[i]) {
	63 …	+ if (type.contentType === 'i32') {
	64 …	+ globalsGetterSetters.push(type.contentType)
	65 …	+ addedFuncs.push(globalGetterIndex)
	66 …	+ addedFuncs.push(globalI32SetterIndex)
	67 …	+ // getter
	68 …	+ // size, local count, get_global, index, end
	69 …	+ addedCodeEntries.push(Buffer.concat([
	70 …	+ Buffer.from([0x03 + lebIndex.length, 0x00, 0x23]),
	71 …	+ lebIndex,
	72 …	+ Buffer.from([0x0b])
	73 …	+ ]))
	74 …	+ // setter
	75 …	+ // size, local count, get_local, index , set_global, index, end
	76 …	+ addedCodeEntries.push(Buffer.concat([
	77 …	+ Buffer.from([0x05 + lebIndex.length, 0x00, 0x20, 0x0, 0x24]),
	78 …	+ lebIndex,
	79 …	+ Buffer.from([0x0b])
	80 …	+ ]))
	81 …	+ } else {
	82 …	+ globalsGetterSetters.push(type.contentType)
	83 …	+ addedFuncs.push(globalGetterIndex)
	84 …	+ addedFuncs.push(globalGetterIndex)
	85 …	+ addedFuncs.push(globalI64SetterIndex)
	86 …	+ // 64 bit
	87 …	+ // getter high
	88 …	+ addedCodeEntries.push(Buffer.concat([
	89 …	+ Buffer.from([0x07 + lebIndex.length, 0x00, 0x23]),
	90 …	+ lebIndex,
	91 …	+ Buffer.from([0x42, 0x20, 0x88, 0xa7, 0x0b])
	92 …	+ ]))
	93 …	+
	94 …	+ // get low
	95 …	+ addedCodeEntries.push(Buffer.concat([
	96 …	+ Buffer.from([0x04 + lebIndex.length, 0x00, 0x23]),
	97 …	+ lebIndex,
	98 …	+ Buffer.from([0xa7, 0x0b])
	99 …	+ ]))
	100 …	+ // (set_global $b
	101 …	+ // (i64.add
	102 …	+ // (i64.shl (i64.extend_u/i32 (get_local 0)) (i64.const 32))
	103 …	+ // (i64.extend_u/i32 (get_local 1))))
	104 …	+ // setter
	105 …	+ addedCodeEntries.push(Buffer.concat([
	106 …	+ Buffer.from([0x0d + lebIndex.length, 0x00, 0x20, 0x01, 0xad, 0x42, 0x20, 0x86, 0x20, 0x00, 0xad, 0x7c, 0x24]),
	107 …	+ lebIndex,
	108 …	+ Buffer.from([0x0b])
	109 …	+ ]))
	110 …	+ }
	111 …	+ }
	112 …	+ }
	113 …	+ funcSection.appendEntries(addedFuncs)
	114 …	+ } else if (section.type === 'export') {
	115 …	+ // export the memory
	116 …	+ const addedExports = []
	117 …	+ if (needExporting['memory']) {
	118 …	+ const funcExp = generateFuncExport(`${symbol}memory`, 0, 'memory')
	119 …	+ addedExports.push(funcExp)
	120 …	+ }
	121 …	+
	122 …	+ // export the table
	123 …	+ if (needExporting['table']) {
	124 …	+ const funcExp = generateFuncExport(`${symbol}table`, 0, 'table')
	125 …	+ addedExports.push(funcExp)
	126 …	+ }
	127 …	+
	128 …	+ // export functions
	129 …	+ const funcs = needExporting['function']
	130 …	+ for (let index in funcs) {
	131 …	+ index = Number(index)
	132 …	+ const funcExp = generateFuncExport(`${symbol}func_${index + numOfImports}`, numOfImports + index, 'function')
	133 …	+ addedExports.push(funcExp)
	134 …	+ }
	135 …	+
	136 …	+ // export globals
	137 …	+ let globalFuncIndex = 0
	138 …	+ for (let index in globalsGetterSetters) {
	139 …	+ const type = globalsGetterSetters[index]
	140 …	+ const funcIndex = numOfImports + numOfFuncs + globalFuncIndex
	141 …	+ if (type === 'i32') {
	142 …	+ // getter
	143 …	+ const getter = generateFuncExport(`${symbol}global_getter_${type}_${index}`, funcIndex, 'function')
	144 …	+ addedExports.push(getter)
	145 …	+
	146 …	+ // setter
	147 …	+ const setter = generateFuncExport(`${symbol}global_setter_${type}_${index}`, funcIndex + 1, 'function')
	148 …	+ addedExports.push(setter)
	149 …	+ globalFuncIndex += 2
	150 …	+ } else {
	151 …	+ // i64s
	152 …	+ // setter high
	153 …	+ const setterHigh = generateFuncExport(`${symbol}global_getter_${type}_${index}_high`, funcIndex, 'function')
	154 …	+ addedExports.push(setterHigh)
	155 …	+ // setter Low
	156 …	+ const setterLow = generateFuncExport(`${symbol}global_getter_${type}_${index}_low`, funcIndex + 1, 'function')
	157 …	+ addedExports.push(setterLow)
	158 …	+ // getter
	159 …	+ const getter = generateFuncExport(`${symbol}global_setter_${type}_${index}`, funcIndex + 2, 'function')
	160 …	+ addedExports.push(getter)
	161 …	+ globalFuncIndex += 3
	162 …	+ }
	163 …	+ }
	164 …	+ section.appendEntries(addedExports)
	165 …	+ } else if (section.type === 'code') {
	166 …	+ section.appendEntries(addedCodeEntries)
	167 …	+ }
	168 …	+ }
	169 …	+ return it.wasm
	170 …	+}
	171 …	+
	172 …	+function generateFuncExport (name, index, type) {
	173 …	+ const setterHigh = new Pipe()
	174 …	+ const fieldString = Buffer.from(name)
	175 …	+ leb128.write(fieldString.length, setterHigh)
	176 …	+ setterHigh.write(fieldString)
	177 …	+ setterHigh.write(Buffer.from([EXTERNAL_KIND[type]]))
	178 …	+ leb128.write(index, setterHigh)
	179 …	+ return setterHigh.buffer
	180 …	+}

package-lock.jsonView
The diff is too large to show. Use a local git client to view these changes. Old file size: 0 bytes New file size: 331017 bytes

package.jsonView
		@@ -1,0 +1,40 @@
	1 …	+{
	2 …	+ "name": "wasm-persist",
	3 …	+ "version": "0.0.0",
	4 …	+ "description": "a JS module for creating orthogonal persistent WebAssembly instances",
	5 …	+ "main": "index.js",
	6 …	+ "scripts": {
	7 …	+ "coveralls": "npm run coverage && nyc report --reporter=text-lcov \| coveralls",
	8 …	+ "coverage": "nyc npm test",
	9 …	+ "lint": "standard",
	10 …	+ "test": "node ./tests/index.js",
	11 …	+ "build:docs": "documentation build --github -f md ./index.js > ./docs/index.md"
	12 …	+ },
	13 …	+ "keywords": [
	14 …	+ "WebAssembly",
	15 …	+ "wasm"
	16 …	+ ],
	17 …	+ "author": "mjbecze <mjbecze@gmail.com>",
	18 …	+ "license": "MPL-2.0",
	19 …	+ "dependencies": {
	20 …	+ "buffer-pipe": "0.0.2",
	21 …	+ "leb128": "0.0.4",
	22 …	+ "wasm-json-toolkit": "^0.3.0"
	23 …	+ },
	24 …	+ "devDependencies": {
	25 …	+ "coveralls": "^3.0.0",
	26 …	+ "documentation": "^6.2.0",
	27 …	+ "nyc": "^11.6.0",
	28 …	+ "standard": "^11.0.1",
	29 …	+ "tape": "^4.9.0",
	30 …	+ "wabt": "^1.0.0"
	31 …	+ },
	32 …	+ "repository": {
	33 …	+ "type": "git",
	34 …	+ "url": "git@github.com:dfinity/wasm-persist.git"
	35 …	+ },
	36 …	+ "bugs": {
	37 …	+ "url": "https://github.com/dfinity/wasm-persist/issues"
	38 …	+ },
	39 …	+ "homepage": "https://github.com/dfinity/wasm-persist"
	40 …	+}

tests/index.jsView
		@@ -1,0 +1,214 @@
	1 …	+const fs = require('fs')
	2 …	+const tape = require('tape')
	3 …	+const persit = require('../')
	4 …	+
	5 …	+tape('empty', async t => {
	6 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/empty.wasm`)
	7 …	+ wasm = persit.prepare(wasm)
	8 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	9 …	+ const json = persit.hibernate(wasmInstance.instance)
	10 …	+ persit.resume(wasmInstance.instance, json)
	11 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	12 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 0)
	13 …	+
	14 …	+ t.end()
	15 …	+})
	16 …	+
	17 …	+tape('custom', async t => {
	18 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/customSections.wasm`)
	19 …	+ wasm = persit.prepare(wasm)
	20 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	21 …	+ const json = persit.hibernate(wasmInstance.instance)
	22 …	+ persit.resume(wasmInstance.instance, json)
	23 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	24 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 0)
	25 …	+
	26 …	+ t.end()
	27 …	+})
	28 …	+
	29 …	+tape('single type section', async t => {
	30 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleType.wasm`)
	31 …	+ wasm = persit.prepare(wasm)
	32 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	33 …	+ const json = persit.hibernate(wasmInstance.instance)
	34 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	35 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 0)
	36 …	+
	37 …	+ t.end()
	38 …	+})
	39 …	+
	40 …	+tape('single import section', async t => {
	41 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleImport.wasm`)
	42 …	+ wasm = persit.prepare(wasm)
	43 …	+ const wasmInstance = await WebAssembly.instantiate(wasm, {foo: {bar () {}}})
	44 …	+ const json = persit.hibernate(wasmInstance.instance)
	45 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	46 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 0)
	47 …	+
	48 …	+ t.end()
	49 …	+})
	50 …	+
	51 …	+tape('single function', async t => {
	52 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleFunction.wasm`)
	53 …	+ wasm = persit.prepare(wasm)
	54 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	55 …	+ const json = persit.hibernate(wasmInstance.instance)
	56 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	57 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 2)
	58 …	+
	59 …	+ t.end()
	60 …	+})
	61 …	+
	62 …	+tape('single table', async t => {
	63 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleTable.wasm`)
	64 …	+ wasm = persit.prepare(wasm)
	65 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	66 …	+ const json = persit.hibernate(wasmInstance.instance)
	67 …	+ t.deepEquals(json, {globals: [], table: ['0'], symbol: '_'})
	68 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 3)
	69 …	+
	70 …	+ t.end()
	71 …	+})
	72 …	+
	73 …	+tape('single table with foregn fuction', async t => {
	74 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleTable.wasm`)
	75 …	+ wasm = persit.prepare(wasm)
	76 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	77 …	+ const wasmInstance2 = await WebAssembly.instantiate(wasm)
	78 …	+ wasmInstance.instance.exports._table.set(0, wasmInstance2.instance.exports.e)
	79 …	+ const json = persit.hibernate(wasmInstance.instance)
	80 …	+ t.deepEquals(json, {globals: [], table: [], symbol: '_'})
	81 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 3)
	82 …	+
	83 …	+ t.end()
	84 …	+})
	85 …	+
	86 …	+tape('single table resume', async t => {
	87 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleTable.wasm`)
	88 …	+ wasm = persit.prepare(wasm)
	89 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	90 …	+ const json = persit.hibernate(wasmInstance.instance)
	91 …	+
	92 …	+ const wasmInstance2 = await WebAssembly.instantiate(wasm)
	93 …	+ persit.resume(wasmInstance2.instance, json)
	94 …	+ const json2 = persit.hibernate(wasmInstance2.instance)
	95 …	+ t.deepEquals(json, json2)
	96 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 3)
	97 …	+
	98 …	+ t.end()
	99 …	+})
	100 …	+
	101 …	+tape('single memory', async t => {
	102 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleMemory.wasm`)
	103 …	+ wasm = persit.prepare(wasm)
	104 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	105 …	+ const json = persit.hibernate(wasmInstance.instance)
	106 …	+ t.equals(json.memory.length, 16384)
	107 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 3)
	108 …	+
	109 …	+ t.end()
	110 …	+})
	111 …	+
	112 …	+tape('skipping memory', async t => {
	113 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleMemory.wasm`)
	114 …	+ wasm = persit.prepare(wasm, '_', {memory: false})
	115 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	116 …	+ const json = persit.hibernate(wasmInstance.instance)
	117 …	+ t.equals(json.memory, undefined)
	118 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 2)
	119 …	+
	120 …	+ t.end()
	121 …	+})
	122 …	+
	123 …	+tape('resuming memory', async t => {
	124 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleMemory.wasm`)
	125 …	+ wasm = persit.prepare(wasm)
	126 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	127 …	+ const json = persit.hibernate(wasmInstance.instance)
	128 …	+
	129 …	+ const wasmInstance2 = await WebAssembly.instantiate(wasm)
	130 …	+ persit.resume(wasmInstance2.instance, json)
	131 …	+ const json2 = persit.hibernate(wasmInstance2.instance)
	132 …	+ t.deepEquals(json, json2)
	133 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 3)
	134 …	+
	135 …	+ t.end()
	136 …	+})
	137 …	+
	138 …	+tape('single i32 global', async t => {
	139 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleI32Global.wasm`)
	140 …	+ wasm = persit.prepare(wasm)
	141 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	142 …	+ const json = persit.hibernate(wasmInstance.instance)
	143 …	+ t.deepEquals(json, {globals: [-2], table: [], symbol: '_'})
	144 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 4)
	145 …	+
	146 …	+ t.end()
	147 …	+})
	148 …	+
	149 …	+tape('single i32 global', async t => {
	150 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleI32Global.wasm`)
	151 …	+ wasm = persit.prepare(wasm)
	152 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	153 …	+ const json = persit.hibernate(wasmInstance.instance)
	154 …	+ t.deepEquals(json, {globals: [-2], table: [], symbol: '_'})
	155 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 4)
	156 …	+
	157 …	+ json.globals[0] = 8
	158 …	+ const wasmInstance2 = await WebAssembly.instantiate(wasm)
	159 …	+ persit.resume(wasmInstance2.instance, json)
	160 …	+ const json2 = persit.hibernate(wasmInstance2.instance)
	161 …	+ t.deepEquals(json2, {globals: [8], table: [], symbol: '_'})
	162 …	+
	163 …	+ t.end()
	164 …	+})
	165 …	+
	166 …	+tape('single i64 global', async t => {
	167 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleI64Global.wasm`)
	168 …	+ wasm = persit.prepare(wasm)
	169 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	170 …	+ const json = persit.hibernate(wasmInstance.instance)
	171 …	+ t.deepEquals(json, {globals: [[-1, -2]], table: [], symbol: '_'})
	172 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 5)
	173 …	+
	174 …	+ t.end()
	175 …	+})
	176 …	+
	177 …	+tape('resuming i64 global', async t => {
	178 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/singleI64Global.wasm`)
	179 …	+ wasm = persit.prepare(wasm)
	180 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	181 …	+ const json = {globals: [[99, 97]], table: [], symbol: '_'}
	182 …	+ persit.resume(wasmInstance.instance, json)
	183 …	+ const json2 = persit.hibernate(wasmInstance.instance)
	184 …	+ t.deepEquals(json, json2)
	185 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 5)
	186 …	+
	187 …	+ t.end()
	188 …	+})
	189 …	+
	190 …	+tape('skipping some globals', async t => {
	191 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/doubleGlobals.wasm`)
	192 …	+ wasm = persit.prepare(wasm, {
	193 …	+ globals: [true]
	194 …	+ }, '_@')
	195 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	196 …	+ const json = persit.hibernate(wasmInstance.instance, '_@')
	197 …	+ t.deepEquals(json, {globals: [-2], table: [], symbol: '_@'})
	198 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 4)
	199 …	+
	200 …	+ t.end()
	201 …	+})
	202 …	+
	203 …	+tape('skipping some globals', async t => {
	204 …	+ let wasm = fs.readFileSync(`${__dirname}/wasm/doubleGlobals.wasm`)
	205 …	+ wasm = persit.prepare(wasm, {
	206 …	+ globals: [false, true]
	207 …	+ }, '_@')
	208 …	+ const wasmInstance = await WebAssembly.instantiate(wasm)
	209 …	+ const json = persit.hibernate(wasmInstance.instance, '_@')
	210 …	+ t.deepEquals(json, {globals: [[-1, -2]], table: [], symbol: '_@'})
	211 …	+ t.equals(Object.keys(wasmInstance.instance.exports).length, 5)
	212 …	+
	213 …	+ t.end()
	214 …	+})

tests/wasm/customSections.wasmView
		@@ -1,0 +1,1 @@
	1 …	+asmname

tests/wasm/doubleGlobals.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`A~~B~e
	2 …	+

tests/wasm/empty.wasmView
		@@ -1,0 +1,1 @@
	1 …	+asm

tests/wasm/singleFunction.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`e
	2 …	+

tests/wasm/singleGlobal.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`A~e
	2 …	+

tests/wasm/singleI32Global.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`A~e
	2 …	+

tests/wasm/singleI64Global.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`~B~e
	2 …	+

tests/wasm/singleImport.wasmView
		@@ -1,0 +1,1 @@
	1 …	+asm`}foobar

tests/wasm/singleMemory.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`e
	2 …	+Ahi

tests/wasm/singleTable.wasmView
		@@ -1,0 +1,2 @@
	1 …	+asm`pe A
	2 …	+

tests/wasm/singleType.wasmView
		@@ -1,0 +1,1 @@
	1 …	+asm`

tests/wast/doubleGlobals.wastView
		@@ -1,0 +1,6 @@
	1 …	+(module
	2 …	+ (global (mut i32) (i32.const -2))
	3 …	+ (global (mut i64) (i64.const -2))
	4 …	+ (func)
	5 …	+ (export "e" (func 0))
	6 …	+)

tests/wast/empty.wastView
		@@ -1,0 +1,1 @@
	1 …	+(module)

tests/wast/singleFunction.wastView
		@@ -1,0 +1,4 @@
	1 …	+(module
	2 …	+ (func)
	3 …	+ (export "e" (func 0))
	4 …	+)

tests/wast/singleI32Global.wastView
		@@ -1,0 +1,5 @@
	1 …	+(module
	2 …	+ (global $a (mut i32) (i32.const -2))
	3 …	+ (func)
	4 …	+ (export "e" (func 0))
	5 …	+)

tests/wast/singleI64Global.wastView
		@@ -1,0 +1,5 @@
	1 …	+(module
	2 …	+ (global $a (mut i64) (i64.const -2))
	3 …	+ (func)
	4 …	+ (export "e" (func 0))
	5 …	+)

tests/wast/singleImport.wastView
		@@ -1,0 +1,3 @@
	1 …	+(module
	2 …	+ (import "foo" "bar" (func (param f32)))
	3 …	+ )

tests/wast/singleMemory.wastView
		@@ -1,0 +1,5 @@
	1 …	+(module
	2 …	+ (memory (data "hi"))
	3 …	+ (func)
	4 …	+ (export "e" (func 0))
	5 …	+)

tests/wast/singleTable.wastView
		@@ -1,0 +1,6 @@
	1 …	+(module
	2 …	+ (table 1 1 anyfunc)
	3 …	+ (elem (i32.const 0) 0)
	4 …	+ (func)
	5 …	+ (export "e" (func 0))
	6 …	+)

tests/wast/singleType.wastView
		@@ -1,0 +1,3 @@
	1 …	+(module
	2 …	+ (type (func (param i32) (result i32)))
	3 …	+ )

tests/wast2wasm.jsView
		@@ -1,0 +1,26 @@
	1 …	+const wabt = require('wabt')
	2 …	+const fs = require('fs')
	3 …	+
	4 …	+function filesWast2wasm () {
	5 …	+ const srcFiles = fs.readdirSync(`${__dirname}/wast`)
	6 …	+ const wastFiles = srcFiles.filter(name => name.split('.').pop() === 'wast')
	7 …	+ for (let file of wastFiles) {
	8 …	+ const wat = fs.readFileSync(`${__dirname}/wast/${file}`).toString()
	9 …	+ file = file.split('.')[0]
	10 …	+
	11 …	+ try {
	12 …	+ const mod = wabt.parseWat('module.wast', wat)
	13 …	+ const r = mod.toBinary({log: true})
	14 …	+ let binary = Buffer.from(r.buffer)
	15 …	+ if (!WebAssembly.validate(binary)) {
	16 …	+ throw new Error('invalid wasm binary')
	17 …	+ }
	18 …	+ fs.writeFileSync(`${__dirname}/wasm/${file}.wasm`, binary)
	19 …	+ } catch (e) {
	20 …	+ console.log(`failed at ${file}`)
	21 …	+ console.log(e)
	22 …	+ }
	23 …	+ }
	24 …	+}
	25 …	+
	26 …	+filesWast2wasm()

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wanderer🌟 / wasm-persist

Commit ef2bd6aff34a889b871ba0df64660c209670a621

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