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<h1 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h1><ul>
<li>了解编译原理,对现代编译器compiler设计有所了解</li>
<li>介绍dart编译器设计, 工程实践上如何设计和实现</li>
<li>了解dart编译器核心代码流转: 核心代码、主要优化</li>
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<time title="修改时间：2023-06-27 22:28:14" itemprop="dateModified" datetime="2023-06-27T22:28:14+08:00">2023-06-27</time>
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，
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，
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<h1 id="主要内容："><a href="#主要内容：" class="headerlink" title="主要内容："></a>主要内容：</h1><ul>
<li>Dart对象模型</li>
<li>虚拟机内部模型</li>
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<a href="/2023/02/15/compose/compose/" class="post-title-link" itemprop="url">Compose架构模块梳理</a>
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<time title="修改时间：2023-04-12 23:17:44" itemprop="dateModified" datetime="2023-04-12T23:17:44+08:00">2023-04-12</time>
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<h1 id="背景"><a href="#背景" class="headerlink" title="背景"></a>背景</h1><p><a target="_blank" rel="noopener" href="https://developer.android.com/jetpack/compose?hl=zh-cn">Jetpack Compose</a> 是Google推出的一个使用kotlin语言、声明式的UI框.</p>
<ul>
<li>针对框架的PreCompose优化方案</li>
<li>通过PreCompose方案，深入compose的源码: 介绍有哪些模块, 有什么作用, 未来能做些什么</li>
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<h1 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h1><ul>
<li>前端检查</li>
<li>ir生成</li>
<li>recompose判断</li>
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<a href="/2022/12/25/compose/compiler_1/" class="post-title-link" itemprop="url">Compose Compiler(1) kotlin编译架构&&KCP</a>
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<h1 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h1><p>Compose compiler是compose框架的一部分, 本质是一个kcp(kotlin compiler plugin),用于支持编译期针对compose特性进行静态检查和代码生成.</p>
<p><img src="/image/compose_compiler//compose_layer.PNG"></p>
<p> 在进入compose的编译之前, 需要事先对kotlin的编译架构、过程以及概念做一些探究储备</p>
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<h1 id="背景"><a href="#背景" class="headerlink" title="背景"></a>背景</h1><p>iot有着很广阔的场景: <a target="_blank" rel="noopener" href="https://pdf.dfcfw.com/pdf/H3_AP202202071545436398_1.pdf">艾瑞咨询-积基“数”本、重塑产业：中国物联网行业研究报告-220129</a>. 智慧城市、车联网、智慧零售、智能家居、智能工厂. </p>
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<h1 id="概要"><a href="#概要" class="headerlink" title="概要"></a>概要</h1><p><a target="_blank" rel="noopener" href="https://mp.weixin.qq.com/s/VXNbqxpoVDJeOPkBt5_88A">Flutter 1.17 | 2020 首个稳定版发布！</a> 全线迁移到AndroidX,现有app迁移成本巨大(几乎不可能迁移)</p>
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<li>改造Flutter engine、工具链，1.17支持support库</li>
<li>跟一下工具链<code>flutter create</code>的源码实现方式</li>
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<li>将上一节中UI线程生成了<code>laytertree</code>，交给GPU线程的<code>rasterizer</code></li>
<li>调用<code>LayerTree</code>的<code>Preroll</code>、<code>Paint</code>2个方法，完成所有<code>Layer</code>的绘制前准备以及绘制操作</li>
<li>将纹理化的结果，上屏</li>
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<h1 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h1><p>这一部分的主要工作是<code>WidgetTree</code>转化成<code>LayerTree</code>，主要分为下面几个阶段</p>
<p><img src="https://user-gold-cdn.xitu.io/2018/8/8/16517c804ab5e799?imageView2/0/w/1280/h/960/format/webp/ignore-error/1"></p>
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<li>Animate: 首先执行动画，这个过程可能会改变状态state</li>
<li>Build: 重新build脏节点的widget（状态改变）</li>
<li>Layout: 对脏节点进行重新的layout</li>
<li>Paint: 脏节点重新绘制</li>
<li>更新layertree，提交给gpu线程</li>
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<p>流程还是比较清晰、容易理解的</p>
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<h1 id="概览"><a href="#概览" class="headerlink" title="概览"></a>概览</h1><p>解决2个问题</p>
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<li>容器和engine的对应关系</li>
<li>路由管理</li>
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