├── .envrc ├── .github ├── dependabot.yml └── workflows │ └── rust.yml ├── .gitignore ├── Cargo.toml ├── LICENSE ├── README.md ├── build.rs ├── flake.lock ├── flake.nix ├── src └── lib.rs ├── test-wasm ├── asconfig.json ├── assembly │ ├── index.ts │ └── tsconfig.json ├── index.js ├── package-lock.json ├── package.json └── tests │ └── index.js └── tests ├── skeptic.rs └── strings.rs /.envrc: -------------------------------------------------------------------------------- 1 | use flake 2 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: cargo 4 | directory: "/" 5 | schedule: 6 | interval: daily 7 | time: '02:00' 8 | open-pull-requests-limit: 10 9 | -------------------------------------------------------------------------------- /.github/workflows/rust.yml: -------------------------------------------------------------------------------- 1 | name: Rust 2 | 3 | on: 4 | push: 5 | branches: [ master ] 6 | pull_request: 7 | branches: [ master ] 8 | 9 | jobs: 10 | test: 11 | 12 | runs-on: ubuntu-latest 13 | 14 | steps: 15 | - uses: actions/checkout@v2 16 | - uses: cachix/install-nix-action@v13 17 | with: 18 | install_url: https://github.com/numtide/nix-flakes-installer/releases/download/nix-2.4pre20210604_8e6ee1b/install 19 | extra_nix_config: | 20 | experimental-features = nix-command flakes 21 | sandbox = false 22 | access-tokens = github.com=${{ secrets.GITHUB_TOKEN }} 23 | - name: Run tests 24 | run: nix flake check --print-build-logs 25 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /target 2 | **/*.rs.bk 3 | Cargo.lock 4 | 5 | /test-wasm/build 6 | /test-wasm/node_modules 7 | -------------------------------------------------------------------------------- /Cargo.toml: -------------------------------------------------------------------------------- 1 | [package] 2 | name = "wasmer-as" 3 | version = "0.4.1-alpha.0" 4 | authors = ["Andrey Kuznetsov "] 5 | edition = "2018" 6 | license = "Apache-2.0" 7 | description = "Helpers to read and write memory in AssemblyScript wasm modules executing in wasmer-runtime" 8 | keywords = ["assemblyscript", "assembly-script", "wasm", "wasmer"] 9 | homepage = "https://github.com/onsails/wasmer-as" 10 | documentation = "https://github.com/onsails/wasmer-as" 11 | repository = "https://github.com/onsails/wasmer-as" 12 | build = "build.rs" 13 | 14 | # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html 15 | 16 | [dependencies] 17 | wasmer = "2.0" 18 | 19 | [build-dependencies] 20 | skeptic = "0.13" 21 | 22 | [dev-dependencies] 23 | skeptic = "0.13" 24 | wasmer = "2.0" 25 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. Definitions. 8 | 9 | "License" shall mean the terms and conditions for use, reproduction, 10 | and distribution as defined by Sections 1 through 9 of this document. 11 | 12 | "Licensor" shall mean the copyright owner or entity authorized by 13 | the copyright owner that is granting the License. 14 | 15 | "Legal Entity" shall mean the union of the acting entity and all 16 | other entities that control, are controlled by, or are under common 17 | control with that entity. For the purposes of this definition, 18 | "control" means (i) the power, direct or indirect, to cause the 19 | direction or management of such entity, whether by contract or 20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the 21 | outstanding shares, or (iii) beneficial ownership of such entity. 22 | 23 | "You" (or "Your") shall mean an individual or Legal Entity 24 | exercising permissions granted by this License. 25 | 26 | "Source" form shall mean the preferred form for making modifications, 27 | including but not limited to software source code, documentation 28 | source, and configuration files. 29 | 30 | "Object" form shall mean any form resulting from mechanical 31 | transformation or translation of a Source form, including but 32 | not limited to compiled object code, generated documentation, 33 | and conversions to other media types. 34 | 35 | "Work" shall mean the work of authorship, whether in Source or 36 | Object form, made available under the License, as indicated by a 37 | copyright notice that is included in or attached to the work 38 | (an example is provided in the Appendix below). 39 | 40 | "Derivative Works" shall mean any work, whether in Source or Object 41 | form, that is based on (or derived from) the Work and for which the 42 | editorial revisions, annotations, elaborations, or other modifications 43 | represent, as a whole, an original work of authorship. For the purposes 44 | of this License, Derivative Works shall not include works that remain 45 | separable from, or merely link (or bind by name) to the interfaces of, 46 | the Work and Derivative Works thereof. 47 | 48 | "Contribution" shall mean any work of authorship, including 49 | the original version of the Work and any modifications or additions 50 | to that Work or Derivative Works thereof, that is intentionally 51 | submitted to Licensor for inclusion in the Work by the copyright owner 52 | or by an individual or Legal Entity authorized to submit on behalf of 53 | the copyright owner. For the purposes of this definition, "submitted" 54 | means any form of electronic, verbal, or written communication sent 55 | to the Licensor or its representatives, including but not limited to 56 | communication on electronic mailing lists, source code control systems, 57 | and issue tracking systems that are managed by, or on behalf of, the 58 | Licensor for the purpose of discussing and improving the Work, but 59 | excluding communication that is conspicuously marked or otherwise 60 | designated in writing by the copyright owner as "Not a Contribution." 61 | 62 | "Contributor" shall mean Licensor and any individual or Legal Entity 63 | on behalf of whom a Contribution has been received by Licensor and 64 | subsequently incorporated within the Work. 65 | 66 | 2. Grant of Copyright License. Subject to the terms and conditions of 67 | this License, each Contributor hereby grants to You a perpetual, 68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 69 | copyright license to reproduce, prepare Derivative Works of, 70 | publicly display, publicly perform, sublicense, and distribute the 71 | Work and such Derivative Works in Source or Object form. 72 | 73 | 3. Grant of Patent License. Subject to the terms and conditions of 74 | this License, each Contributor hereby grants to You a perpetual, 75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable 76 | (except as stated in this section) patent license to make, have made, 77 | use, offer to sell, sell, import, and otherwise transfer the Work, 78 | where such license applies only to those patent claims licensable 79 | by such Contributor that are necessarily infringed by their 80 | Contribution(s) alone or by combination of their Contribution(s) 81 | with the Work to which such Contribution(s) was submitted. If You 82 | institute patent litigation against any entity (including a 83 | cross-claim or counterclaim in a lawsuit) alleging that the Work 84 | or a Contribution incorporated within the Work constitutes direct 85 | or contributory patent infringement, then any patent licenses 86 | granted to You under this License for that Work shall terminate 87 | as of the date such litigation is filed. 88 | 89 | 4. Redistribution. You may reproduce and distribute copies of the 90 | Work or Derivative Works thereof in any medium, with or without 91 | modifications, and in Source or Object form, provided that You 92 | meet the following conditions: 93 | 94 | (a) You must give any other recipients of the Work or 95 | Derivative Works a copy of this License; and 96 | 97 | (b) You must cause any modified files to carry prominent notices 98 | stating that You changed the files; and 99 | 100 | (c) You must retain, in the Source form of any Derivative Works 101 | that You distribute, all copyright, patent, trademark, and 102 | attribution notices from the Source form of the Work, 103 | excluding those notices that do not pertain to any part of 104 | the Derivative Works; and 105 | 106 | (d) If the Work includes a "NOTICE" text file as part of its 107 | distribution, then any Derivative Works that You distribute must 108 | include a readable copy of the attribution notices contained 109 | within such NOTICE file, excluding those notices that do not 110 | pertain to any part of the Derivative Works, in at least one 111 | of the following places: within a NOTICE text file distributed 112 | as part of the Derivative Works; within the Source form or 113 | documentation, if provided along with the Derivative Works; or, 114 | within a display generated by the Derivative Works, if and 115 | wherever such third-party notices normally appear. The contents 116 | of the NOTICE file are for informational purposes only and 117 | do not modify the License. You may add Your own attribution 118 | notices within Derivative Works that You distribute, alongside 119 | or as an addendum to the NOTICE text from the Work, provided 120 | that such additional attribution notices cannot be construed 121 | as modifying the License. 122 | 123 | You may add Your own copyright statement to Your modifications and 124 | may provide additional or different license terms and conditions 125 | for use, reproduction, or distribution of Your modifications, or 126 | for any such Derivative Works as a whole, provided Your use, 127 | reproduction, and distribution of the Work otherwise complies with 128 | the conditions stated in this License. 129 | 130 | 5. Submission of Contributions. Unless You explicitly state otherwise, 131 | any Contribution intentionally submitted for inclusion in the Work 132 | by You to the Licensor shall be under the terms and conditions of 133 | this License, without any additional terms or conditions. 134 | Notwithstanding the above, nothing herein shall supersede or modify 135 | the terms of any separate license agreement you may have executed 136 | with Licensor regarding such Contributions. 137 | 138 | 6. Trademarks. This License does not grant permission to use the trade 139 | names, trademarks, service marks, or product names of the Licensor, 140 | except as required for reasonable and customary use in describing the 141 | origin of the Work and reproducing the content of the NOTICE file. 142 | 143 | 7. Disclaimer of Warranty. Unless required by applicable law or 144 | agreed to in writing, Licensor provides the Work (and each 145 | Contributor provides its Contributions) on an "AS IS" BASIS, 146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 147 | implied, including, without limitation, any warranties or conditions 148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A 149 | PARTICULAR PURPOSE. You are solely responsible for determining the 150 | appropriateness of using or redistributing the Work and assume any 151 | risks associated with Your exercise of permissions under this License. 152 | 153 | 8. Limitation of Liability. In no event and under no legal theory, 154 | whether in tort (including negligence), contract, or otherwise, 155 | unless required by applicable law (such as deliberate and grossly 156 | negligent acts) or agreed to in writing, shall any Contributor be 157 | liable to You for damages, including any direct, indirect, special, 158 | incidental, or consequential damages of any character arising as a 159 | result of this License or out of the use or inability to use the 160 | Work (including but not limited to damages for loss of goodwill, 161 | work stoppage, computer failure or malfunction, or any and all 162 | other commercial damages or losses), even if such Contributor 163 | has been advised of the possibility of such damages. 164 | 165 | 9. Accepting Warranty or Additional Liability. While redistributing 166 | the Work or Derivative Works thereof, You may choose to offer, 167 | and charge a fee for, acceptance of support, warranty, indemnity, 168 | or other liability obligations and/or rights consistent with this 169 | License. However, in accepting such obligations, You may act only 170 | on Your own behalf and on Your sole responsibility, not on behalf 171 | of any other Contributor, and only if You agree to indemnify, 172 | defend, and hold each Contributor harmless for any liability 173 | incurred by, or claims asserted against, such Contributor by reason 174 | of your accepting any such warranty or additional liability. 175 | 176 | END OF TERMS AND CONDITIONS 177 | 178 | APPENDIX: How to apply the Apache License to your work. 179 | 180 | To apply the Apache License to your work, attach the following 181 | boilerplate notice, with the fields enclosed by brackets "[]" 182 | replaced with your own identifying information. (Don't include 183 | the brackets!) The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | Helpers for dealing with assemblyscript memory inside wasmer-runtime 2 | === 3 | 4 | ```rust 5 | use std::error::Error; 6 | use wasmer::*; 7 | use wasmer_as::{AsmScriptRead, AsmScriptStringPtr}; 8 | 9 | #[derive(Clone)] 10 | struct Env { 11 | memory: LazyInit, 12 | } 13 | 14 | impl WasmerEnv for Env { 15 | fn init_with_instance(&mut self, instance: &Instance) -> Result<(), HostEnvInitError> { 16 | self.memory.initialize( 17 | instance 18 | .exports 19 | .get_memory("memory") 20 | .map_err(HostEnvInitError::from)? 21 | .clone(), 22 | ); 23 | Ok(()) 24 | } 25 | } 26 | 27 | fn main() -> Result<(), Box> { 28 | let wasm_bytes = include_bytes!(concat!( 29 | env!("CARGO_MANIFEST_DIR"), 30 | "/test-wasm/build/optimized.wasm" 31 | )); 32 | let store = Store::default(); 33 | let module = Module::new(&store, wasm_bytes)?; 34 | 35 | let env = Env { 36 | memory: LazyInit::default(), 37 | }; 38 | 39 | let import_object = imports! { 40 | "env" => { 41 | "abort" => Function::new_native_with_env(&store, env, abort), 42 | }, 43 | }; 44 | 45 | let instance = Instance::new(&module, &import_object)?; 46 | 47 | // for the test we use simple function returning constant string: 48 | // 49 | // export function getString(): string { 50 | // return "TheString"; 51 | // } 52 | let get_string = instance.exports.get_function("getString")?; 53 | 54 | let results = get_string.call(&[])?; 55 | 56 | let str_ptr = results.first().expect("get pointer"); 57 | let str_ptr = AsmScriptStringPtr::new(str_ptr.unwrap_i32() as u32); 58 | 59 | let memory = instance.exports.get_memory("memory").expect("get memory"); 60 | let string = str_ptr.read(memory)?; 61 | 62 | assert_eq!(string, "$¢ह한𝌆"); 63 | 64 | Ok(()) 65 | } 66 | 67 | // if get_string throws an exception abort for some reason is being called 68 | fn abort( 69 | env: &Env, 70 | message: AsmScriptStringPtr, 71 | filename: AsmScriptStringPtr, 72 | line: i32, 73 | col: i32 74 | ) { 75 | let memory = env.memory.get_ref().expect("initialized memory"); 76 | let message = message.read(memory).unwrap(); 77 | let filename = filename.read(memory).unwrap(); 78 | eprintln!("Error: {} at {}:{} col: {}", message, filename, line, col); 79 | } 80 | ``` 81 | -------------------------------------------------------------------------------- /build.rs: -------------------------------------------------------------------------------- 1 | extern crate skeptic; 2 | 3 | fn main() { 4 | skeptic::generate_doc_tests(&["README.md"]); 5 | } 6 | -------------------------------------------------------------------------------- /flake.lock: -------------------------------------------------------------------------------- 1 | { 2 | "nodes": { 3 | "flake-utils": { 4 | "locked": { 5 | "lastModified": 1614513358, 6 | "narHash": "sha256-LakhOx3S1dRjnh0b5Dg3mbZyH0ToC9I8Y2wKSkBaTzU=", 7 | "owner": "numtide", 8 | "repo": "flake-utils", 9 | "rev": "5466c5bbece17adaab2d82fae80b46e807611bf3", 10 | "type": "github" 11 | }, 12 | "original": { 13 | "owner": "numtide", 14 | "repo": "flake-utils", 15 | "type": "github" 16 | } 17 | }, 18 | "nixpkgs": { 19 | "locked": { 20 | "lastModified": 1626554849, 21 | "narHash": "sha256-hfFZLm1G9CbMulruPP6V3t9v1dMNcLpCu9J5Cq60n1c=", 22 | "owner": "NixOS", 23 | "repo": "nixpkgs", 24 | "rev": "28425b4e36b164c33fe30e7d2b2f6813717dcde5", 25 | "type": "github" 26 | }, 27 | "original": { 28 | "id": "nixpkgs", 29 | "type": "indirect" 30 | } 31 | }, 32 | "nixpkgs_2": { 33 | "locked": { 34 | "lastModified": 1617325113, 35 | "narHash": "sha256-GksR0nvGxfZ79T91UUtWjjccxazv6Yh/MvEJ82v1Xmw=", 36 | "owner": "nixos", 37 | "repo": "nixpkgs", 38 | "rev": "54c1e44240d8a527a8f4892608c4bce5440c3ecb", 39 | "type": "github" 40 | }, 41 | "original": { 42 | "owner": "NixOS", 43 | "repo": "nixpkgs", 44 | "type": "github" 45 | } 46 | }, 47 | "root": { 48 | "inputs": { 49 | "nixpkgs": "nixpkgs", 50 | "rust-overlay": "rust-overlay", 51 | "utils": "utils" 52 | } 53 | }, 54 | "rust-overlay": { 55 | "inputs": { 56 | "flake-utils": "flake-utils", 57 | "nixpkgs": "nixpkgs_2" 58 | }, 59 | "locked": { 60 | "lastModified": 1626488045, 61 | "narHash": "sha256-qGkU/Rg3jvGPGoaDy6ceHhaA+P+0wQoHUv+IUigiXnI=", 62 | "owner": "oxalica", 63 | "repo": "rust-overlay", 64 | "rev": "462835d47b901e8d5b445642940de40f6344f4f3", 65 | "type": "github" 66 | }, 67 | "original": { 68 | "owner": "oxalica", 69 | "repo": "rust-overlay", 70 | "type": "github" 71 | } 72 | }, 73 | "utils": { 74 | "locked": { 75 | "lastModified": 1623875721, 76 | "narHash": "sha256-A8BU7bjS5GirpAUv4QA+QnJ4CceLHkcXdRp4xITDB0s=", 77 | "owner": "numtide", 78 | "repo": "flake-utils", 79 | "rev": "f7e004a55b120c02ecb6219596820fcd32ca8772", 80 | "type": "github" 81 | }, 82 | "original": { 83 | "owner": "numtide", 84 | "repo": "flake-utils", 85 | "type": "github" 86 | } 87 | } 88 | }, 89 | "root": "root", 90 | "version": 7 91 | } 92 | -------------------------------------------------------------------------------- /flake.nix: -------------------------------------------------------------------------------- 1 | { 2 | description = "A very basic flake"; 3 | 4 | inputs = { 5 | utils.url = github:numtide/flake-utils; 6 | rust-overlay.url = "github:oxalica/rust-overlay"; 7 | }; 8 | 9 | outputs = { self, nixpkgs, utils, rust-overlay }: utils.lib.eachDefaultSystem ( 10 | system: 11 | let 12 | pkgs = import nixpkgs { 13 | inherit system; 14 | overlays = [ rust-overlay.overlay ]; 15 | }; 16 | in 17 | { 18 | 19 | checks.ci = pkgs.stdenv.mkDerivation { 20 | name = "ci"; 21 | 22 | src = ./.; 23 | 24 | buildInputs = with pkgs; 25 | [ 26 | rust-bin.stable.latest.default 27 | nodejs-14_x 28 | 29 | cacert 30 | ]; 31 | 32 | buildPhase = '' 33 | cd test-wasm 34 | export HOME=$TMP 35 | npm install 36 | npm run asbuild 37 | 38 | cd .. 39 | cargo test 40 | 41 | mkdir $out 42 | ''; 43 | 44 | dontInstall = true; 45 | dontFixup = true; 46 | }; 47 | 48 | devShell = pkgs.mkShell { 49 | buildInputs = with pkgs; [ 50 | rust-bin.stable.latest.default 51 | nodejs-14_x 52 | 53 | cargo-release 54 | ]; 55 | }; 56 | } 57 | ); 58 | } 59 | -------------------------------------------------------------------------------- /src/lib.rs: -------------------------------------------------------------------------------- 1 | use std::fmt; 2 | use wasmer::{Array, Memory, WasmPtr}; 3 | 4 | pub type AsmScriptStringPtr = WasmPtr; 5 | 6 | pub trait AsmScriptRead { 7 | fn read(self, memory: &Memory) -> Result; 8 | 9 | fn size(offset: u32, memory: &Memory) -> Result; 10 | } 11 | 12 | impl AsmScriptRead for AsmScriptStringPtr { 13 | fn read(self, memory: &Memory) -> Result { 14 | let offset = self.offset(); 15 | let size = Self::size(offset, memory)?; 16 | 17 | // we need size / 2 because assemblyscript counts bytes 18 | // while deref considers u16 elements 19 | if let Some(buf) = self.deref(memory, 0, size / 2) { 20 | let input: Vec = buf.iter().map(|b| b.get()).collect(); 21 | Ok(String::from_utf16_lossy(&input)) 22 | } else { 23 | Err(Error::Mem("Wrong offset: can't read buf")) 24 | } 25 | } 26 | 27 | fn size(offset: u32, memory: &Memory) -> Result { 28 | if offset < 4 { 29 | return Err(Error::Mem("Wrong offset: less than 2")); 30 | } 31 | 32 | // read -4 offset 33 | // https://www.assemblyscript.org/memory.html#internals 34 | if let Some(cell) = memory.view::().get(offset as usize / (32 / 8) - 1) { 35 | Ok(cell.get()) 36 | } else { 37 | Err(Error::Mem("Wrong offset: can't read size")) 38 | } 39 | } 40 | } 41 | 42 | #[derive(Debug)] 43 | pub enum Error { 44 | Mem(&'static str), 45 | } 46 | 47 | impl fmt::Display for Error { 48 | fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 49 | match self { 50 | Error::Mem(err) => write!(f, "{}", err), 51 | } 52 | } 53 | } 54 | 55 | impl std::error::Error for Error {} 56 | -------------------------------------------------------------------------------- /test-wasm/asconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "targets": { 3 | "debug": { 4 | "binaryFile": "build/untouched.wasm", 5 | "textFile": "build/untouched.wat", 6 | "sourceMap": true, 7 | "debug": true 8 | }, 9 | "release": { 10 | "binaryFile": "build/optimized.wasm", 11 | "textFile": "build/optimized.wat", 12 | "sourceMap": true, 13 | "optimizeLevel": 3, 14 | "shrinkLevel": 0, 15 | "converge": false, 16 | "noAssert": false 17 | } 18 | }, 19 | "options": {} 20 | } -------------------------------------------------------------------------------- /test-wasm/assembly/index.ts: -------------------------------------------------------------------------------- 1 | export function getString(): string { 2 | return "$¢ह한𝌆"; 3 | } 4 | -------------------------------------------------------------------------------- /test-wasm/assembly/tsconfig.json: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "assemblyscript/std/assembly.json", 3 | "include": [ 4 | "./**/*.ts" 5 | ] 6 | } -------------------------------------------------------------------------------- /test-wasm/index.js: -------------------------------------------------------------------------------- 1 | const fs = require("fs"); 2 | const loader = require("@assemblyscript/loader"); 3 | const imports = { /* imports go here */ }; 4 | const wasmModule = loader.instantiateSync(fs.readFileSync(__dirname + "/build/optimized.wasm"), imports); 5 | module.exports = wasmModule.exports; 6 | -------------------------------------------------------------------------------- /test-wasm/package-lock.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "test-wasm", 3 | "version": "1.0.0", 4 | "lockfileVersion": 1, 5 | "requires": true, 6 | "dependencies": { 7 | "@assemblyscript/loader": { 8 | "version": "0.19.7", 9 | "resolved": "https://registry.npmjs.org/@assemblyscript/loader/-/loader-0.19.7.tgz", 10 | "integrity": "sha512-/BdvOMHnfW3uIHFEgDPRbmA+BoQjuYpjKIZgI3p4sG8Jxgy9UuQW7cQUFx7dRlFUk/SBVCoB8N7412NgKyctqg==" 11 | }, 12 | "assemblyscript": { 13 | "version": "0.19.7", 14 | "resolved": "https://registry.npmjs.org/assemblyscript/-/assemblyscript-0.19.7.tgz", 15 | "integrity": "sha512-0Vs27D9yIqxbwAx/zp2CNMCgR/Aa2cQlMZO+ctW30rhQ0/UOS/J9PkFXRxUVNMYj0xwEMT/Cq6l9flXO2ZJFcQ==", 16 | "dev": true, 17 | "requires": { 18 | "binaryen": "101.0.0-nightly.20210703", 19 | "long": "^4.0.0" 20 | } 21 | }, 22 | "binaryen": { 23 | "version": "101.0.0-nightly.20210703", 24 | "resolved": "https://registry.npmjs.org/binaryen/-/binaryen-101.0.0-nightly.20210703.tgz", 25 | "integrity": "sha512-7iuRy/aSsd8BlO0ZOG4GqDI8z66UhazD10eeC3i14SOhZJ+MLC3I+BX5ydr3nk9g5j2PDGndxuYvm0gy+VJHYg==", 26 | "dev": true 27 | }, 28 | "long": { 29 | "version": "4.0.0", 30 | "resolved": "https://registry.npmjs.org/long/-/long-4.0.0.tgz", 31 | "integrity": "sha512-XsP+KhQif4bjX1kbuSiySJFNAehNxgLb6hPRGJ9QsUr8ajHkuXGdrHmFUTUUXhDwVX2R5bY4JNZEwbUiMhV+MA==", 32 | "dev": true 33 | } 34 | } 35 | } 36 | -------------------------------------------------------------------------------- /test-wasm/package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "test-wasm", 3 | "version": "1.0.0", 4 | "description": "", 5 | "main": "index.js", 6 | "scripts": { 7 | "test": "node tests", 8 | "asbuild:untouched": "asc assembly/index.ts --target debug", 9 | "asbuild:optimized": "asc assembly/index.ts --target release", 10 | "asbuild": "npm run asbuild:untouched && npm run asbuild:optimized" 11 | }, 12 | "author": "", 13 | "license": "ISC", 14 | "dependencies": { 15 | "@assemblyscript/loader": "^0.19.7" 16 | }, 17 | "devDependencies": { 18 | "assemblyscript": "^0.19.7" 19 | } 20 | } -------------------------------------------------------------------------------- /test-wasm/tests/index.js: -------------------------------------------------------------------------------- 1 | const assert = require("assert"); 2 | const myModule = require(".."); 3 | assert.strictEqual(myModule.add(1, 2), 3); 4 | console.log("ok"); 5 | -------------------------------------------------------------------------------- /tests/skeptic.rs: -------------------------------------------------------------------------------- 1 | include!(concat!(env!("OUT_DIR"), "/skeptic-tests.rs")); 2 | -------------------------------------------------------------------------------- /tests/strings.rs: -------------------------------------------------------------------------------- 1 | use std::error::Error; 2 | use wasmer::*; 3 | use wasmer_as::{AsmScriptRead, AsmScriptStringPtr}; 4 | 5 | #[derive(Clone)] 6 | struct Env { 7 | memory: LazyInit, 8 | } 9 | 10 | impl WasmerEnv for Env { 11 | fn init_with_instance(&mut self, instance: &Instance) -> Result<(), HostEnvInitError> { 12 | self.memory.initialize( 13 | instance 14 | .exports 15 | .get_memory("memory") 16 | .map_err(HostEnvInitError::from)? 17 | .clone(), 18 | ); 19 | Ok(()) 20 | } 21 | } 22 | 23 | #[test] 24 | fn read_strings() -> Result<(), Box> { 25 | let wasm_bytes = include_bytes!(concat!( 26 | env!("CARGO_MANIFEST_DIR"), 27 | "/test-wasm/build/optimized.wasm" 28 | )); 29 | let store = Store::default(); 30 | let module = Module::new(&store, wasm_bytes)?; 31 | 32 | let env = Env { 33 | memory: LazyInit::default(), 34 | }; 35 | 36 | let import_object = imports! { 37 | "env" => { 38 | "abort" => Function::new_native_with_env(&store, env, abort), 39 | }, 40 | }; 41 | 42 | let instance = Instance::new(&module, &import_object)?; 43 | let memory = instance.exports.get_memory("memory").expect("get memory"); 44 | 45 | let get_string = instance 46 | .exports 47 | .get_native_function::<(), AsmScriptStringPtr>("getString")?; 48 | 49 | let str_ptr = get_string.call()?; 50 | let string = str_ptr.read(memory)?; 51 | 52 | assert_eq!(string, "$¢ह한𝌆"); 53 | 54 | Ok(()) 55 | } 56 | 57 | #[allow(dead_code)] 58 | fn abort( 59 | env: &Env, 60 | message: AsmScriptStringPtr, 61 | filename: AsmScriptStringPtr, 62 | line: i32, 63 | col: i32, 64 | ) { 65 | let memory = env.memory.get_ref().expect("initialized memory"); 66 | let message = message.read(memory).unwrap(); 67 | let filename = filename.read(memory).unwrap(); 68 | eprintln!("Error: {} at {}:{} col: {}", message, filename, line, col); 69 | } 70 | --------------------------------------------------------------------------------