├── .gitignore
├── examples
    ├── canvas
    │   ├── example.wasm
    │   ├── Makefile
    │   ├── Cargo.toml
    │   ├── index.html
    │   ├── src
    │   │   └── lib.rs
    │   └── Cargo.lock
    ├── helloworld
    │   ├── example.wasm
    │   ├── src
    │   │   └── lib.rs
    │   ├── index.html
    │   ├── Makefile
    │   ├── Cargo.toml
    │   └── Cargo.lock
    └── web_console
    │   ├── example.wasm
    │   ├── index.html
    │   ├── Makefile
    │   ├── src
    │       └── lib.rs
    │   ├── Cargo.toml
    │   └── Cargo.lock
├── .npmignore
├── package.json
├── Makefile
├── LICENSE-MIT
├── README.md
├── wasm-module.min.js
├── LICENSE-APACHE
└── wasm-module.js


/.gitignore:
--------------------------------------------------------------------------------
1 | node_modules
2 | target
3 | 


--------------------------------------------------------------------------------
/examples/canvas/example.wasm:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/richardanaya/wasm-module/HEAD/examples/canvas/example.wasm


--------------------------------------------------------------------------------
/examples/helloworld/example.wasm:
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https://raw.githubusercontent.com/richardanaya/wasm-module/HEAD/examples/helloworld/example.wasm


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/examples/web_console/example.wasm:
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https://raw.githubusercontent.com/richardanaya/wasm-module/HEAD/examples/web_console/example.wasm


--------------------------------------------------------------------------------
/examples/helloworld/src/lib.rs:
--------------------------------------------------------------------------------
1 | use js_ffi::*;
2 | 
3 | #[no_mangle]
4 | pub fn main() -> () {
5 |     js!(console.log).invoke_1("Hello World");
6 | }


--------------------------------------------------------------------------------
/.npmignore:
--------------------------------------------------------------------------------
 1 | examples
 2 | examples_old
 3 | node_modules
 4 | src
 5 | tools
 6 | webidl
 7 | .gitignore
 8 | .npmignore
 9 | Makefile
10 | package*
11 | 


--------------------------------------------------------------------------------
/examples/helloworld/index.html:
--------------------------------------------------------------------------------
1 | <script src="https://unpkg.com/@webcomponents/webcomponentsjs@latest/webcomponents-loader.js"></script>
2 | <script src="../../wasm-module.min.js"></script>
3 | <wasm-module src="example.wasm"></wasm-module>


--------------------------------------------------------------------------------
/examples/web_console/index.html:
--------------------------------------------------------------------------------
1 | <script src="https://unpkg.com/@webcomponents/webcomponentsjs@latest/webcomponents-loader.js"></script>
2 | <script src="../../wasm-module.min.js"></script>
3 | <wasm-module src="example.wasm"></wasm-module>


--------------------------------------------------------------------------------
/examples/canvas/Makefile:
--------------------------------------------------------------------------------
1 | build:
2 | 	@RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
3 | 	@cp target/wasm32-unknown-unknown/release/example.wasm .
4 | lint:
5 | 	@cargo fmt
6 | serve:
7 | 	python3 -m http.server 8080


--------------------------------------------------------------------------------
/examples/helloworld/Makefile:
--------------------------------------------------------------------------------
1 | build:
2 | 	@RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
3 | 	@cp target/wasm32-unknown-unknown/release/example.wasm .
4 | lint:
5 | 	@cargo fmt
6 | serve:
7 | 	python3 -m http.server 8080


--------------------------------------------------------------------------------
/examples/web_console/Makefile:
--------------------------------------------------------------------------------
1 | build:
2 | 	@RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
3 | 	@cp target/wasm32-unknown-unknown/release/example.wasm .
4 | lint:
5 | 	@cargo fmt
6 | serve:
7 | 	python3 -m http.server 8080


--------------------------------------------------------------------------------
/examples/canvas/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "example"
 3 | version = "0.1.0"
 4 | authors = ["Richard <Richard>"]
 5 | edition = "2018"
 6 | 
 7 | [lib]
 8 | crate-type =["cdylib"]
 9 | 
10 | [dependencies]
11 | js_ffi = "0.6" # for talking to javascript


--------------------------------------------------------------------------------
/examples/canvas/index.html:
--------------------------------------------------------------------------------
1 | <script src="https://unpkg.com/@webcomponents/webcomponentsjs@latest/webcomponents-loader.js"></script>
2 | <script src="../../wasm-module.js"></script>
3 | <canvas id="screen" width="500" height="200"></canvas>
4 | <wasm-module src="example.wasm"></wasm-module>


--------------------------------------------------------------------------------
/examples/web_console/src/lib.rs:
--------------------------------------------------------------------------------
 1 | #[no_mangle]
 2 | pub fn main() -> () {
 3 |     let console = globals::get::<web_console::Console>().lock();
 4 |     console.log("You wont see this");
 5 |     console.clear();
 6 |     console.time(None);
 7 |     console.log("Hello world!");
 8 |     console.time_end(None);
 9 | }
10 | 


--------------------------------------------------------------------------------
/examples/web_console/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "example"
 3 | version = "0.1.0"
 4 | authors = ["Richard <Richard>"]
 5 | edition = "2018"
 6 | 
 7 | [lib]
 8 | crate-type =["cdylib"]
 9 | 
10 | [dependencies]
11 | web_console = "0.0.0"
12 | globals = "0.1.3" # optional: for easily getting global singletons that implement Default trait


--------------------------------------------------------------------------------
/examples/helloworld/Cargo.toml:
--------------------------------------------------------------------------------
 1 | [package]
 2 | name = "example"
 3 | version = "0.1.0"
 4 | authors = ["Richard <Richard>"]
 5 | edition = "2018"
 6 | 
 7 | [lib]
 8 | crate-type =["cdylib"]
 9 | 
10 | [dependencies]
11 | js_ffi = "0.6" # for talking to javascript
12 | globals = "0.1.3" # optional: for easily getting global singletons that implement Default trait


--------------------------------------------------------------------------------
/examples/canvas/src/lib.rs:
--------------------------------------------------------------------------------
 1 | use js_ffi::*;
 2 | 
 3 | #[no_mangle]
 4 | fn main() {
 5 |     let screen = js!(document.querySelector).call_1(DOCUMENT, "#screen");
 6 |     let ctx = js!(HTMLCanvasElement.prototype.getContext).call_1(screen, "2d");
 7 | 
 8 |     let fill_style = js!(function(color){
 9 |         this.fillStyle = color;
10 |     });
11 |     let fill_rect = js!(CanvasRenderingContext2D.prototype.fillRect);
12 | 
13 |     fill_style.call_1(ctx, "red");
14 |     fill_rect.call_4(ctx, 0.0, 0.0, 50.0, 50.0);
15 | 
16 |     fill_style.call_1(ctx, "green");
17 |     fill_rect.call_4(ctx, 15.0, 15.0, 50.0, 50.0);
18 | 
19 |     fill_style.call_1(ctx, "blue");
20 |     fill_rect.call_4(ctx, 30.0, 30.0, 50.0, 50.0);
21 | }
22 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "wasm-module",
 3 |   "version": "0.1.1",
 4 |   "description": "A web component for making web assembly modules that can interact with browser easily",
 5 |   "main": "wasm-module.js",
 6 |   "directories": {
 7 |     "example": "examples"
 8 |   },
 9 |   "scripts": {
10 |     "test": "echo \"Error: no test specified\" && exit 1"
11 |   },
12 |   "repository": {
13 |     "type": "git",
14 |     "url": "git+https://github.com/richardanaya/wasm-module.git"
15 |   },
16 |   "keywords": [
17 |     "wasm",
18 |     "webidl"
19 |   ],
20 |   "author": "Richard Anaya",
21 |   "license": "MIT OR Apache2.0",
22 |   "bugs": {
23 |     "url": "https://github.com/richardanaya/wasm-module/issues"
24 |   },
25 |   "homepage": "https://github.com/richardanaya/wasm-module#readme",
26 |   "dependencies": {
27 |     "babel-minify": "^0.5.1"
28 |   }
29 | }
30 | 


--------------------------------------------------------------------------------
/Makefile:
--------------------------------------------------------------------------------
 1 | everything: setup generate_webidl lint build minify examples
 2 | build:
 3 | 	./node_modules/.bin/rollup src/wasm-module.js --file wasm-module.js --format umd --name webidlLoader
 4 | .PHONY: examples
 5 | examples:
 6 | 	cd examples/helloworld && make
 7 | 	cd examples/alert && make
 8 | 	cd examples/canvas && make
 9 | 	cd examples/events && make
10 | 	cd examples/x-clock && make
11 | setup:
12 | 	npm install
13 | generate_webidl:
14 | 	node tools/generate_webidl.js Console.webidl Window.webidl Document.webidl HTMLCanvasElement.webidl CanvasRenderingContext2D.webidl EventTarget.webidl KeyboardEvent.webidl MouseEvent.webidl Element.webidl HTMLInputElement.webidl WindowOrWorkerGlobalScope.webidl
15 | lint:
16 | 	./node_modules/.bin/prettier --write src/wasm-module.js src/webidl.js tools/generate_webidl.js
17 | minify:
18 | 	./node_modules/.bin/babel-minify wasm-module.js -o wasm-module.min.js
19 | publish:
20 | 	npm publish
21 | serve:
22 | 	@python3 -m http.server 8080


--------------------------------------------------------------------------------
/LICENSE-MIT:
--------------------------------------------------------------------------------
 1 | Copyright (c) 2019 Richard Anaya
 2 | 
 3 | Permission is hereby granted, free of charge, to any
 4 | person obtaining a copy of this software and associated
 5 | documentation files (the "Software"), to deal in the
 6 | Software without restriction, including without
 7 | limitation the rights to use, copy, modify, merge,
 8 | publish, distribute, sublicense, and/or sell copies of
 9 | the Software, and to permit persons to whom the Software
10 | is furnished to do so, subject to the following
11 | conditions:
12 | 
13 | The above copyright notice and this permission notice
14 | shall be included in all copies or substantial portions
15 | of the Software.
16 | 
17 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
18 | ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
19 | TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
20 | PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
21 | SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
22 | CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 | OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
24 | IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 | DEALINGS IN THE SOFTWARE.


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | # wasm-module
  2 | 
  3 | A custom HTML element `<wasm-module>` that loads your web assembly module and dynamically exposes access to javascript to your web assembly module with no special setup.
  4 | 
  5 | ## Features
  6 | - [x] interact with browser imperatively and with no code generation using [js_ffi](https://github.com/richardanaya/js_ffi)
  7 | - [x] [standard libraries](https://github.com/richardanaya/wasm-module#standard-web-libraries) that expose new functionality so you don't having to know javascript
  8 | - [x] usable for Rust, C, or [any other language that compiles to WASM](https://github.com/appcypher/awesome-wasm-langs)
  9 | - [ ] run your wasm module on a separate thread in a web worker
 10 | 
 11 | # Hello World
 12 | 
 13 | See demo [here](https://richardanaya.github.io/wasm-module/examples/helloworld/)
 14 | 
 15 | ```rust
 16 | use js_ffi::*;
 17 | 
 18 | #[no_mangle]
 19 | pub fn main() -> () {
 20 |     js!(console.log).invoke_1("Hello World");
 21 | }
 22 | ```
 23 | ```toml
 24 | [dependencies]
 25 | js_ffi = "0.6" # for talking to javascript
 26 | ```
 27 | ```makefile
 28 | # cli commands for building web assembly
 29 | build:
 30 | 	@RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release
 31 | 	@cp target/wasm32-unknown-unknown/release/helloworld.wasm .
 32 | lint:
 33 | 	@cargo fmt
 34 | serve:
 35 | 	python3 -m http.server 8080
 36 | ```
 37 | ```html
 38 | <script src="https://unpkg.com/@webcomponents/webcomponentsjs@latest/webcomponents-loader.js"></script>
 39 | <script src="https://unpkg.com/wasm-module@latest/wasm-module.min.js"></script>
 40 | <wasm-module src="helloworld.wasm"></wasm-module>
 41 | ```
 42 | # Drawing
 43 | 
 44 | See demo [here](https://richardanaya.github.io/wasm-module/examples/canvas/)
 45 | 
 46 | ```html
 47 | <script src="https://unpkg.com/@webcomponents/webcomponentsjs@latest/webcomponents-loader.js"></script>
 48 | <script src="https://unpkg.com/wasm-module@latest/wasm-module.min.js"></script>
 49 | <canvas id="screen" width="500" height="200"></canvas>
 50 | <wasm-module src="drawing.wasm"></wasm-module>
 51 | ```
 52 | ```rust
 53 | use js_ffi::*;
 54 | 
 55 | #[no_mangle]
 56 | fn main() {
 57 |     let screen = js!(document.querySelector).call_1(DOCUMENT, "#screen");
 58 |     let ctx = js!(document.querySelector).call_1(screen, "#screen");
 59 | 
 60 |     let fill_style = js!(function(color){
 61 |         this.fillStyle = color;
 62 |     });
 63 |     let fill_rect = js!(CanvasRenderingContext2D.prototype.fillRect);
 64 | 
 65 |     fill_style.call_1(ctx, "red");
 66 |     fill_rect.call_4(ctx, 0.0, 0.0, 50.0, 50.0);
 67 | 
 68 |     fill_style.call_1(ctx, "green");
 69 |     fill_rect.call_4(ctx, 15.0, 15.0, 50.0, 50.0);
 70 | 
 71 |     fill_style.call_1(ctx, "blue");
 72 |     fill_rect.call_4(ctx, 30.0, 30.0, 50.0, 50.0);
 73 | }
 74 | ```
 75 | 
 76 | # Standard Web Libraries
 77 | 
 78 | A collection of libraries exist that expose javascript functionality so you don't have to implement it yourself. Just add them to your project and go!
 79 | 
 80 | * [web_console](https://github.com/richardanaya/web_console)
 81 | * [web_random](https://github.com/richardanaya/web_random)
 82 | * [web_timer](https://github.com/richardanaya/web_timer)
 83 | 
 84 | # Don't like Rust?
 85 | 
 86 | There's nothing Rust specific about this web component. `js_ffi` has a [technology agnostic interface](https://github.com/richardanaya/js_ffi/#dont-like-rust) that can't be used by many web assembly languages.
 87 | 
 88 | # Want small web assembly modules?
 89 | You can drastically reduce the size of your web assembly modules by:
 90 | 
 91 | * be sure to make your library`#![no_std]`
 92 | * utilize the `alloc` crate for standard data structues
 93 | * ONLY use dependent libraries that are `#![no_std]`
 94 | * use a custom allocator like [`wee_alloc`](https://github.com/rustwasm/wee_alloc) instead of the bulky standard jemalloc
 95 | * compile in release with flag to strip symbols: `RUSTFLAGS='-C link-arg=-s' cargo build --target wasm32-unknown-unknown --release`
 96 | 
 97 | # License
 98 | 
 99 | This project is licensed under either of
100 | 
101 |  * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
102 |    http://www.apache.org/licenses/LICENSE-2.0)
103 |  * MIT license ([LICENSE-MIT](LICENSE-MIT) or
104 |    http://opensource.org/licenses/MIT)
105 | 
106 | at your option.
107 | 
108 | ### Contribution
109 | 
110 | Unless you explicitly state otherwise, any contribution intentionally submitted
111 | for inclusion in `wasm-module` by you, as defined in the Apache-2.0 license, shall be
112 | dual licensed as above, without any additional terms or conditions.
113 | 


--------------------------------------------------------------------------------
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id=functions.length;functions.push(eval("("+code+")"));return id},jsfficall0:function(obj,f){return convertResponse(functions[f].call(allocator_get(obj)))},jsfficall1:function(obj,f,a1_type,a1){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1)))},jsfficall2:function(obj,f,a1_type,a1,a2_type,a2){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2)))},jsfficall3:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3)))},jsfficall4:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4)))},jsfficall5:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5)))},jsfficall6:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5,a6_type,a6){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5),convertArgument(a6_type,a6)))},jsfficall7:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5,a6_type,a6,a7_type,a7){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5),convertArgument(a6_type,a6),convertArgument(a7_type,a7)))},jsfficall8:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5,a6_type,a6,a7_type,a7,a8_type,a8){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5),convertArgument(a6_type,a6),convertArgument(a7_type,a7),convertArgument(a8_type,a8)))},jsfficall9:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5,a6_type,a6,a7_type,a7,a8_type,a8,a9_type,a9){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5),convertArgument(a6_type,a6),convertArgument(a7_type,a7),convertArgument(a8_type,a8),convertArgument(a9_type,a9)))},jsfficall10:function(obj,f,a1_type,a1,a2_type,a2,a3_type,a3,a4_type,a4,a5_type,a5,a6_type,a6,a7_type,a7,a8_type,a8,a9_type,a9,a10_type,a10){return convertResponse(functions[f].call(allocator_get(obj),convertArgument(a1_type,a1),convertArgument(a2_type,a2),convertArgument(a3_type,a3),convertArgument(a4_type,a4),convertArgument(a5_type,a5),convertArgument(a6_type,a6),convertArgument(a7_type,a7),convertArgument(a8_type,a8),convertArgument(a9_type,a9),convertArgument(a10_type,a10)))}}}).then(module=>{mod=module;if(cfg.onLoad){cfg.onLoad(module)}module.instance.exports.main()}))}};class WasmModule extends HTMLElement{connectedCallback(){let wasmSrc=this.getAttribute("src");if(!wasmSrc){console.error("no 'src' attribute specified for wasm-module");return}let _this=this;js_ffi.run({path:wasmSrc,onLoad:m=>{_this.module=m}})}}window.customElements.define("wasm-module",WasmModule);
2 | 


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--------------------------------------------------------------------------------
/wasm-module.js:
--------------------------------------------------------------------------------
  1 | var js_ffi = {
  2 |   run: function(cfg) {
  3 |     //allocator
  4 |     let allocations = [undefined, null, console, window, document];
  5 |     let empty = [];
  6 |     function allocate(value) {
  7 |       const i = empty.length > 0 ? empty.pop() : allocations.length;
  8 |       allocations[i] = value;
  9 |       return i;
 10 |     }
 11 |     function allocator_release(handle) {
 12 |       if (handle > 4) {
 13 |         delete allocations[handle];
 14 |         empty.push(handle);
 15 |       }
 16 |     }
 17 |     function allocator_get(handle) {
 18 |       if (handle < 0) {
 19 |         return;
 20 |       }
 21 |       const ret = allocations[handle];
 22 |       if (handle !== 0 && !ret) {
 23 |         console.error(`Asked for ${handle} after it was released.`);
 24 |       }
 25 |       return ret;
 26 |     }
 27 | 
 28 |     let functions = [
 29 |       // get property
 30 |       (o,p) => {
 31 |         return o[p];
 32 |       },
 33 |       // set property
 34 |       (o,p,v) => {
 35 |         o[p] = v;
 36 |       }
 37 |     ];
 38 |     let mod = null;
 39 | 
 40 |     const TYPE_NOTHING = 0;
 41 |     const TYPE_NUM = 1;
 42 |     const TYPE_STRING = 2;
 43 |     const TYPE_BOOL = 3;
 44 |     const TYPE_FUNCTION = 4;
 45 |     const TYPE_OBJ = 5;
 46 |     const TYPE_UINT8_ARRAY = 6;
 47 |     const TYPE_INT8_ARRAY = 7;
 48 |     const TYPE_UINT8CLAMPED_ARRAY = 8;
 49 |     const TYPE_INT16_ARRAY = 9;
 50 |     const TYPE_UINT16_ARRAY = 10;
 51 |     const TYPE_INT32_ARRAY = 11;
 52 |     const TYPE_UINT32_ARRAY = 12;
 53 |     const TYPE_F32_ARRAY = 13;
 54 |     const TYPE_F64_ARRAY = 14;
 55 |     const TYPE_BI64_ARRAY = 15;
 56 |     const TYPE_BUI64_ARRAY = 16;
 57 |     const TYPE_MEMORY = 17;
 58 | 
 59 |     const utf8dec = new TextDecoder("utf-8");
 60 |     const utf8enc = new TextEncoder("utf-8");
 61 | 
 62 |     function createString(str) {
 63 |       let bytes = utf8enc.encode(str + String.fromCharCode(0));
 64 |       let len = bytes.length;
 65 |       let start = mod.instance.exports.jsffimalloc(len);
 66 |       const memory = new Uint8Array(mod.instance.exports.memory.buffer);
 67 |       memory.set(bytes, start);
 68 |       return start;
 69 |     }
 70 | 
 71 |     function createTypedArray(r,t,size){
 72 |       let start = mod.instance.exports.jsffimalloc(size*r.length+4);
 73 |       let memory = new Uint32Array(mod.instance.exports.memory.buffer);
 74 |       memory[start/4] = r.length;
 75 |       let data_start = (start+4)/size;
 76 |       memory = new t(mod.instance.exports.memory.buffer);
 77 |       for(let i=0;i<r.length;i++){
 78 |         memory[data_start+i] = r[i];
 79 |       }
 80 |       return start;
 81 |     }
 82 | 
 83 |     function getStringFromMemory(mem, start) {
 84 |       const data = new Uint8Array(mem);
 85 |       const str = [];
 86 |       let i = start;
 87 |       while (data[i] !== 0) {
 88 |         str.push(data[i]);
 89 |         i++;
 90 |       }
 91 |       return utf8dec.decode(new Uint8Array(str));
 92 |     }
 93 | 
 94 |     function getTypedArrayFromMemory(t, mem, start, size) {
 95 |       const data32 = new Uint32Array(mem);
 96 |       const ptr = data32[start / 4];
 97 |       const offset = data32[ptr / 4];
 98 |       const length = data32[ptr / 4 + 1];
 99 |       let b = mem.slice(offset, offset + length * size);
100 |       let a = new t(b);
101 |       return a;
102 |     }
103 | 
104 |     function convertArgument(val_type, val) {
105 |       if (val_type == TYPE_NUM) {
106 |       } else if (val_type === TYPE_NOTHING) {
107 |         val = undefined;
108 |       } else if (val_type === TYPE_STRING) {
109 |         val = getStringFromMemory(mod.instance.exports.memory.buffer, val);
110 |       } else if (val_type === TYPE_BOOL) {
111 |         val = val != 0;
112 |       } else if (val_type === TYPE_OBJ) {
113 |         val = allocator_get(val);
114 |       } else if (val_type === TYPE_FUNCTION) {
115 |         let id = val;
116 |         val = function(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) {
117 |           let l = arguments.length;
118 |           if (l === 0) {
119 |             mod.instance.exports.jsfficallback(
120 |               id,
121 |               0,
122 |               0,
123 |               0,
124 |               0,
125 |               0,
126 |               0,
127 |               0,
128 |               0,
129 |               0,
130 |               0
131 |             );
132 |           } else if (l === 1) {
133 |             mod.instance.exports.jsfficallback(
134 |               id,
135 |               convertResponse(a1),
136 |               0,
137 |               0,
138 |               0,
139 |               0,
140 |               0,
141 |               0,
142 |               0,
143 |               0,
144 |               0
145 |             );
146 |           } else if (l === 2) {
147 |             mod.instance.exports.jsfficallback(
148 |               id,
149 |               convertResponse(a1),
150 |               convertResponse(a2),
151 |               0,
152 |               0,
153 |               0,
154 |               0,
155 |               0,
156 |               0,
157 |               0,
158 |               0
159 |             );
160 |           } else if (l === 3) {
161 |             mod.instance.exports.jsfficallback(
162 |               id,
163 |               convertResponse(a1),
164 |               convertResponse(a2),
165 |               convertResponse(a3),
166 |               0,
167 |               0,
168 |               0,
169 |               0,
170 |               0,
171 |               0,
172 |               0
173 |             );
174 |           } else if (l === 4) {
175 |             mod.instance.exports.jsfficallback(
176 |               id,
177 |               convertResponse(a1),
178 |               convertResponse(a2),
179 |               convertResponse(a3),
180 |               convertResponse(a4),
181 |               0,
182 |               0,
183 |               0,
184 |               0,
185 |               0,
186 |               0
187 |             );
188 |           } else if (l === 5) {
189 |             mod.instance.exports.jsfficallback(
190 |               id,
191 |               convertResponse(a1),
192 |               convertResponse(a2),
193 |               convertResponse(a3),
194 |               convertResponse(a4),
195 |               convertResponse(a5),
196 |               0,
197 |               0,
198 |               0,
199 |               0,
200 |               0
201 |             );
202 |           } else if (l === 6) {
203 |             mod.instance.exports.jsfficallback(
204 |               id,
205 |               convertResponse(a1),
206 |               convertResponse(a2),
207 |               convertResponse(a3),
208 |               convertResponse(a4),
209 |               convertResponse(a5),
210 |               convertResponse(a6),
211 |               0,
212 |               0,
213 |               0,
214 |               0
215 |             );
216 |           } else if (l === 7) {
217 |             mod.instance.exports.jsfficallback(
218 |               id,
219 |               convertResponse(a1),
220 |               convertResponse(a2),
221 |               convertResponse(a3),
222 |               convertResponse(a4),
223 |               convertResponse(a5),
224 |               convertResponse(a6),
225 |               convertResponse(a7),
226 |               0,
227 |               0,
228 |               0
229 |             );
230 |           } else if (l === 8) {
231 |             mod.instance.exports.jsfficallback(
232 |               id,
233 |               convertResponse(a1),
234 |               convertResponse(a2),
235 |               convertResponse(a3),
236 |               convertResponse(a4),
237 |               convertResponse(a5),
238 |               convertResponse(a6),
239 |               convertResponse(a7),
240 |               convertResponse(a8),
241 |               0,
242 |               0
243 |             );
244 |           } else if (l === 9) {
245 |             mod.instance.exports.jsfficallback(
246 |               id,
247 |               convertResponse(a1),
248 |               convertResponse(a2),
249 |               convertResponse(a3),
250 |               convertResponse(a4),
251 |               convertResponse(a5),
252 |               convertResponse(a6),
253 |               convertResponse(a7),
254 |               convertResponse(a8),
255 |               convertResponse(a9),
256 |               0
257 |             );
258 |           } else if (l === 10) {
259 |             mod.instance.exports.jsfficallback(
260 |               id,
261 |               convertResponse(a1),
262 |               convertResponse(a2),
263 |               convertResponse(a3),
264 |               convertResponse(a4),
265 |               convertResponse(a5),
266 |               convertResponse(a6),
267 |               convertResponse(a7),
268 |               convertResponse(a8),
269 |               convertResponse(a9),
270 |               convertResponse(a10)
271 |             );
272 |           }
273 |         };
274 |       } else if (val_type === TYPE_UINT8_ARRAY) {
275 |         val = getTypedArrayFromMemory(
276 |           Uint8Array,
277 |           mod.instance.exports.memory.buffer,
278 |           val,
279 |           1
280 |         );
281 |       } else if (val_type === TYPE_INT8_ARRAY) {
282 |         val = getTypedArrayFromMemory(
283 |           Int8Array,
284 |           mod.instance.exports.memory.buffer,
285 |           val,
286 |           1
287 |         );
288 |       } else if (val_type === TYPE_F32_ARRAY) {
289 |         val = getTypedArrayFromMemory(
290 |           Float32Array,
291 |           mod.instance.exports.memory.buffer,
292 |           val,
293 |           4
294 |         );
295 |       } else if (val_type === TYPE_F64_ARRAY) {
296 |         val = getTypedArrayFromMemory(
297 |           Float64Array,
298 |           mod.instance.exports.memory.buffer,
299 |           val,
300 |           8
301 |         );
302 |       } else if (val_type === TYPE_INT32_ARRAY) {
303 |         val = getTypedArrayFromMemory(
304 |           Int32Array,
305 |           mod.instance.exports.memory.buffer,
306 |           val,
307 |           4
308 |         );
309 |       } else if (val_type === TYPE_UINT32_ARRAY) {
310 |         val = getTypedArrayFromMemory(
311 |           Uint32Array,
312 |           mod.instance.exports.memory.buffer,
313 |           val,
314 |           4
315 |         );
316 |       } else if (val_type === TYPE_INT16_ARRAY) {
317 |         val = getTypedArrayFromMemory(
318 |           Int16Array,
319 |           mod.instance.exports.memory.buffer,
320 |           val,
321 |           2
322 |         );
323 |       } else if (val_type === TYPE_UINT16_ARRAY) {
324 |         val = getTypedArrayFromMemory(
325 |           Uint16Array,
326 |           mod.instance.exports.memory.buffer,
327 |           val,
328 |           2
329 |         );
330 |       } else if (val_type === TYPE_MEMORY) {
331 |         val = mod.instance.exports.memory.buffer;
332 |       }else {
333 |         throw error("Unknown data type");
334 |       }
335 |       return val;
336 |     }
337 | 
338 |     function convertResponse(r) {
339 |       const type = typeof r;
340 |       if (type === "string") {
341 |         return createString(r);
342 |       } else if (type === "number") {
343 |         return r;
344 |       } else if (r === undefined) {
345 |         return 0;
346 |       } else if (r === null) {
347 |         return 1;
348 |       } else if (r === true) {
349 |         return 1;
350 |       } else if (r === false) {
351 |         return 0;
352 |       } else if (r.constructor === Float32Array) {
353 |         return createTypedArray(r,Float32Array,4)
354 |       } else if (r.constructor === Uint8Array) {
355 |         return createTypedArray(r,Uint8Array,1)
356 |       } else if (r.constructor === Int8Array) {
357 |         return createTypedArray(r,Int8Array,1)
358 |       } else if (r.constructor === Float64Array) {
359 |         return createTypedArray(r,Float64Array,8)
360 |       } else if (r.constructor === Int32Array) {
361 |         return createTypedArray(r,Int32Array,4)
362 |       } else if (r.constructor === Uint32Array) {
363 |         return createTypedArray(r,Uint32Array,4)
364 |       } else if (r.constructor === Int16Array) {
365 |         return createTypedArray(r,Int16Array,2)
366 |       } else if (r.constructor === Uint16Array) {
367 |         return createTypedArray(r,Uint16Array,2)
368 |       }
369 |       return allocate(r);
370 |     }
371 |     if (typeof cfg === "string") {
372 |       cfg = { path: cfg };
373 |     }
374 |     fetch(cfg.path)
375 |       .then(response => response.arrayBuffer())
376 |       .then(bytes =>
377 |         WebAssembly.instantiate(bytes, {
378 |           env: {
379 |             jsffithrowerror: function(e) {
380 |               let err = getStringFromMemory(
381 |                 mod.instance.exports.memory.buffer,
382 |                 e
383 |               );
384 |               console.error(err);
385 |               throw new Error("Web assembly module exited unexpectedly.");
386 |             },
387 |             jsffirelease: function(obj) {
388 |               allocator_release(obj);
389 |             },
390 |             jsffiregister: function(code) {
391 |               code = getStringFromMemory(
392 |                 mod.instance.exports.memory.buffer,
393 |                 code
394 |               );
395 |               let id = functions.length;
396 |               functions.push(eval("("+code+")"));
397 |               return id;
398 |             },
399 |             jsfficall0: function(obj, f) {
400 |               return convertResponse(functions[f].call(allocator_get(obj)));
401 |             },
402 |             jsfficall1: function(obj, f, a1_type, a1) {
403 |               return convertResponse(
404 |                 functions[f].call(
405 |                   allocator_get(obj),
406 |                   convertArgument(a1_type, a1)
407 |                 )
408 |               );
409 |             },
410 |             jsfficall2: function(obj, f, a1_type, a1, a2_type, a2) {
411 |               return convertResponse(
412 |                 functions[f].call(
413 |                   allocator_get(obj),
414 |                   convertArgument(a1_type, a1),
415 |                   convertArgument(a2_type, a2)
416 |                 )
417 |               );
418 |             },
419 |             jsfficall3: function(
420 |               obj,
421 |               f,
422 |               a1_type,
423 |               a1,
424 |               a2_type,
425 |               a2,
426 |               a3_type,
427 |               a3
428 |             ) {
429 |               return convertResponse(
430 |                 functions[f].call(
431 |                   allocator_get(obj),
432 |                   convertArgument(a1_type, a1),
433 |                   convertArgument(a2_type, a2),
434 |                   convertArgument(a3_type, a3)
435 |                 )
436 |               );
437 |             },
438 |             jsfficall4: function(
439 |               obj,
440 |               f,
441 |               a1_type,
442 |               a1,
443 |               a2_type,
444 |               a2,
445 |               a3_type,
446 |               a3,
447 |               a4_type,
448 |               a4
449 |             ) {
450 |               return convertResponse(
451 |                 functions[f].call(
452 |                   allocator_get(obj),
453 |                   convertArgument(a1_type, a1),
454 |                   convertArgument(a2_type, a2),
455 |                   convertArgument(a3_type, a3),
456 |                   convertArgument(a4_type, a4)
457 |                 )
458 |               );
459 |             },
460 |             jsfficall5: function(
461 |               obj,
462 |               f,
463 |               a1_type,
464 |               a1,
465 |               a2_type,
466 |               a2,
467 |               a3_type,
468 |               a3,
469 |               a4_type,
470 |               a4,
471 |               a5_type,
472 |               a5
473 |             ) {
474 |               return convertResponse(
475 |                 functions[f].call(
476 |                   allocator_get(obj),
477 |                   convertArgument(a1_type, a1),
478 |                   convertArgument(a2_type, a2),
479 |                   convertArgument(a3_type, a3),
480 |                   convertArgument(a4_type, a4),
481 |                   convertArgument(a5_type, a5)
482 |                 )
483 |               );
484 |             },
485 |             jsfficall6: function(
486 |               obj,
487 |               f,
488 |               a1_type,
489 |               a1,
490 |               a2_type,
491 |               a2,
492 |               a3_type,
493 |               a3,
494 |               a4_type,
495 |               a4,
496 |               a5_type,
497 |               a5,
498 |               a6_type,
499 |               a6
500 |             ) {
501 |               return convertResponse(
502 |                 functions[f].call(
503 |                   allocator_get(obj),
504 |                   convertArgument(a1_type, a1),
505 |                   convertArgument(a2_type, a2),
506 |                   convertArgument(a3_type, a3),
507 |                   convertArgument(a4_type, a4),
508 |                   convertArgument(a5_type, a5),
509 |                   convertArgument(a6_type, a6)
510 |                 )
511 |               );
512 |             },
513 |             jsfficall7: function(
514 |               obj,
515 |               f,
516 |               a1_type,
517 |               a1,
518 |               a2_type,
519 |               a2,
520 |               a3_type,
521 |               a3,
522 |               a4_type,
523 |               a4,
524 |               a5_type,
525 |               a5,
526 |               a6_type,
527 |               a6,
528 |               a7_type,
529 |               a7
530 |             ) {
531 |               return convertResponse(
532 |                 functions[f].call(
533 |                   allocator_get(obj),
534 |                   convertArgument(a1_type, a1),
535 |                   convertArgument(a2_type, a2),
536 |                   convertArgument(a3_type, a3),
537 |                   convertArgument(a4_type, a4),
538 |                   convertArgument(a5_type, a5),
539 |                   convertArgument(a6_type, a6),
540 |                   convertArgument(a7_type, a7)
541 |                 )
542 |               );
543 |             },
544 |             jsfficall8: function(
545 |               obj,
546 |               f,
547 |               a1_type,
548 |               a1,
549 |               a2_type,
550 |               a2,
551 |               a3_type,
552 |               a3,
553 |               a4_type,
554 |               a4,
555 |               a5_type,
556 |               a5,
557 |               a6_type,
558 |               a6,
559 |               a7_type,
560 |               a7,
561 |               a8_type,
562 |               a8
563 |             ) {
564 |               return convertResponse(
565 |                 functions[f].call(
566 |                   allocator_get(obj),
567 |                   convertArgument(a1_type, a1),
568 |                   convertArgument(a2_type, a2),
569 |                   convertArgument(a3_type, a3),
570 |                   convertArgument(a4_type, a4),
571 |                   convertArgument(a5_type, a5),
572 |                   convertArgument(a6_type, a6),
573 |                   convertArgument(a7_type, a7),
574 |                   convertArgument(a8_type, a8)
575 |                 )
576 |               );
577 |             },
578 |             jsfficall9: function(
579 |               obj,
580 |               f,
581 |               a1_type,
582 |               a1,
583 |               a2_type,
584 |               a2,
585 |               a3_type,
586 |               a3,
587 |               a4_type,
588 |               a4,
589 |               a5_type,
590 |               a5,
591 |               a6_type,
592 |               a6,
593 |               a7_type,
594 |               a7,
595 |               a8_type,
596 |               a8,
597 |               a9_type,
598 |               a9
599 |             ) {
600 |               return convertResponse(
601 |                 functions[f].call(
602 |                   allocator_get(obj),
603 |                   convertArgument(a1_type, a1),
604 |                   convertArgument(a2_type, a2),
605 |                   convertArgument(a3_type, a3),
606 |                   convertArgument(a4_type, a4),
607 |                   convertArgument(a5_type, a5),
608 |                   convertArgument(a6_type, a6),
609 |                   convertArgument(a7_type, a7),
610 |                   convertArgument(a8_type, a8),
611 |                   convertArgument(a9_type, a9)
612 |                 )
613 |               );
614 |             },
615 |             jsfficall10: function(
616 |               obj,
617 |               f,
618 |               a1_type,
619 |               a1,
620 |               a2_type,
621 |               a2,
622 |               a3_type,
623 |               a3,
624 |               a4_type,
625 |               a4,
626 |               a5_type,
627 |               a5,
628 |               a6_type,
629 |               a6,
630 |               a7_type,
631 |               a7,
632 |               a8_type,
633 |               a8,
634 |               a9_type,
635 |               a9,
636 |               a10_type,
637 |               a10
638 |             ) {
639 |               return convertResponse(
640 |                 functions[f].call(
641 |                   allocator_get(obj),
642 |                   convertArgument(a1_type, a1),
643 |                   convertArgument(a2_type, a2),
644 |                   convertArgument(a3_type, a3),
645 |                   convertArgument(a4_type, a4),
646 |                   convertArgument(a5_type, a5),
647 |                   convertArgument(a6_type, a6),
648 |                   convertArgument(a7_type, a7),
649 |                   convertArgument(a8_type, a8),
650 |                   convertArgument(a9_type, a9),
651 |                   convertArgument(a10_type, a10)
652 |                 )
653 |               );
654 |             }
655 |           }
656 |         }).then(module => {
657 |           mod = module;
658 |           if (cfg.onLoad) {
659 |             cfg.onLoad(module);
660 |           }
661 |           module.instance.exports.main();
662 |         })
663 |       );
664 |   }
665 | };
666 | 
667 | class WasmModule extends HTMLElement {
668 |   connectedCallback() {
669 |     let wasmSrc = this.getAttribute("src");
670 |     if (!wasmSrc) {
671 |       console.error("no 'src' attribute specified for wasm-module");
672 |       return;
673 |     }
674 |     let _this = this;
675 |     js_ffi.run({
676 |       path: wasmSrc,
677 |       onLoad: m => {
678 |         _this.module = m;
679 |       }
680 |     });
681 |   }
682 | }
683 | window.customElements.define("wasm-module", WasmModule);
684 | 


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