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| author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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| committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
| commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
| tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/zh-cn/web/javascript/reference/global_objects/webassembly/compile | |
| parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
| download | translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.gz translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.tar.bz2 translated-content-33058f2b292b3a581333bdfb21b8f671898c5060.zip | |
initial commit
Diffstat (limited to 'files/zh-cn/web/javascript/reference/global_objects/webassembly/compile')
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diff --git a/files/zh-cn/web/javascript/reference/global_objects/webassembly/compile/index.html b/files/zh-cn/web/javascript/reference/global_objects/webassembly/compile/index.html new file mode 100644 index 0000000000..6489b54a09 --- /dev/null +++ b/files/zh-cn/web/javascript/reference/global_objects/webassembly/compile/index.html @@ -0,0 +1,101 @@ +--- +title: WebAssembly.compile() +slug: Web/JavaScript/Reference/Global_Objects/WebAssembly/compile +translation_of: Web/JavaScript/Reference/Global_Objects/WebAssembly/compile +--- +<div>{{JSRef}} {{SeeCompatTable}}</div> + +<p><strong><code>WebAssembly.compile()</code></strong> 方法编译WebAssembly二进制代码到一个{{jsxref("WebAssembly.Module")}} 对象。如果在实例化之前有必要去编译一个模块,那么这个方法是有用的(否则,将会使用{{jsxref("WebAssembly.instantiate()")}} 方法)</p> + +<h2 id="语法">语法</h2> + +<pre class="syntaxbox">Promise<WebAssembly.Module> WebAssembly.compile(bufferSource);</pre> + +<h3 id="参数">参数</h3> + +<dl> + <dt><em>bufferSource</em></dt> + <dd>一个包含你想编译的wasm模块二进制代码的 <a href="/en-US/docs/Web/JavaScript/Typed_arrays">typed array</a>(类型数组) or <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer">ArrayBuffer</a>(数组缓冲区)</dd> +</dl> + +<h3 id="返回值">返回值</h3> + +<p>一个解析为 {{jsxref("WebAssembly.Module")}} 的<code>Promise</code> 对象。</p> + +<h3 id="异常">异常</h3> + +<ul> + <li>如果 <code>bufferSource</code> 不是一个 <a href="/en-US/docs/Web/JavaScript/Typed_arrays">typed array</a>, 将抛出一个 {{jsxref("TypeError")}} 。</li> + <li>如果编译失败 promise 将会 reject 一个 {{jsxref("WebAssembly.CompileError")}}。</li> +</ul> + +<h2 id="例子">例子</h2> + +<p>下面的例子 (查看GitHub上的 <a href="https://github.com/mdn/webassembly-examples/blob/master/js-api-examples/index-compile.html">index-compile.html</a> 例子, 并且也能 <a href="https://mdn.github.io/webassembly-examples/js-api-examples/index-compile.html">查看运行效果</a>) 使用 <code>compile()</code> 方法编译加载进来的 simple.wasm 二进制代码并且使用 <a href="/en-US/docs/Web/API/Worker/postMessage">postMessage()</a> 发送给一个 <a href="https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API">worker</a>。</p> + +<pre class="brush: js">var worker = new Worker("wasm_worker.js"); + +fetch('simple.wasm').then(response => + response.arrayBuffer() +).then(bytes => + WebAssembly.compile(bytes) +).then(mod => + worker.postMessage(mod) +);</pre> + +<p>在线程中 (查看 <code><a href="https://github.com/mdn/webassembly-examples/blob/master/js-api-examples/wasm_worker.js">wasm_worker.js</a></code>) 我们定义了一个导入对象共模块使用,然后设置了一个事件处理函数来接收主线程发送过来的模块。当模块被接收之后,我们使用{{jsxref("WebAssembly.Instantiate()")}} 方法创建了一个实例,调用从它里面导出的一个方法,接下来展示了我们可以用 {{jsxref("WebAssembly.Module/exports", "WebAssembly.Module.exports")}} 属性来调用模块上返回的可用信息。</p> + +<pre class="brush: js">var importObject = { + imports: { + imported_func: function(arg) { + console.log(arg); + } + } +}; + +onmessage = function(e) { + console.log('module received from main thread'); + var mod = e.data; + + WebAssembly.instantiate(mod, importObject).then(function(instance) { + instance.exports.exported_func(); + }); + + var exports = WebAssembly.Module.exports(mod); + console.log(exports[0]); +};</pre> + +<h2 id="Specifications">Specifications</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + </thead> + <tbody> + <tr> + <td>{{SpecName('WebAssembly JS', '#webassemblycompile', 'compile()')}}</td> + <td>{{Spec2('WebAssembly JS')}}</td> + <td>Initial draft definition.</td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility" name="Browser_compatibility">Browser compatibility</h2> + +<div> + + +<p>{{Compat("javascript.builtins.WebAssembly.compile")}}</p> +</div> + +<h2 id="See_also">See also</h2> + +<ul> + <li><a href="/en-US/docs/WebAssembly">WebAssembly</a> overview page</li> + <li><a href="/en-US/docs/WebAssembly/Concepts">WebAssembly concepts</a></li> + <li><a href="/en-US/docs/WebAssembly/Using_the_JavaScript_API">Using the WebAssembly JavaScript API</a></li> +</ul> |
