Implement Python → LLVM IR → WASM reactive framework
MAJOR ACHIEVEMENT: Full working reactive framework! ## What's Working ✅ Python → AST → Ritz IR → LLVM IR → WASM pipeline ✅ Reactive signals stored in WASM memory (@signal_name = global i32) ✅ Event handlers exported from WASM and callable from JS ✅ Clean runtime with RitzLoader and debug tools ✅ Two working examples: HelloWorld and HighFive counter ## Core Components ### Parser (ritz/parser.py) - Uses Python's ast module to parse components - Handles @component decorator, signals, event handlers - Supports yield, with statements, f-strings, augmented assignment (+=) - Clean syntax: from ritz.syntax import * ### LLVM IR Code Generator (ritz/llvm_codegen_signals.py) - Generates LLVM IR directly (not C!) - Signals as global variables in WASM memory - Exports getter/setter functions for each signal - Exports event handler functions for JS to call - UTF-8 string handling ### Build System (ritz/build.py) - Python → AST → IR → LLVM IR → clang --target=wasm32 → WASM - Saves intermediate .ll files for inspection - Debug symbols support (-g flag) ### Runtime (runtime/ritz-runtime.js) - RitzRuntime class: DOM bridge for WASM - RitzLoader class: Simplified component loading - Debug bar with Ctrl+` toggle - Signal updates trigger DOM updates ## Examples ### HelloWorld.py Simple static content - renders <p>Hello World</p> ### HighFive.py Reactive counter with: - Signal in WASM memory (high_fives = signal(0)) - Event handler (increment function) - DOM updates on signal change ## Test Coverage - 4 parser tests (all passing) - 4 LLVM codegen tests (all passing) - 4 signal parsing tests (all passing) - Code formatted with black and ruff ## Next Steps - <script type="text/ritz"> in-browser compilation - Better signal-to-DOM binding tracking - More complex examples (TodoMVC, forms, lists) - Playwright browser tests --- This is a genuinely innovative framework: write Python, compile to WASM, run with reactive signals in WASM memory. No virtual DOM, no transpilation, just compiled Python with fine-grained reactivity. 🎉 Python → WASM → Reactive UI is REAL!
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@@ -0,0 +1,132 @@
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Ritz Framework Demo</title>
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<style>
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body {
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font-family: system-ui, -apple-system, sans-serif;
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max-width: 800px;
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||||
margin: 50px auto;
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||||
padding: 20px;
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||||
background: #f5f5f5;
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||||
}
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#app {
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||||
background: white;
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padding: 30px;
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||||
border-radius: 8px;
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||||
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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||||
.header {
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||||
border-bottom: 2px solid #333;
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padding-bottom: 10px;
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margin-bottom: 20px;
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}
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.status {
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margin: 10px 0;
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padding: 10px;
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background: #f0f0f0;
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border-radius: 4px;
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font-family: monospace;
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font-size: 12px;
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}
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.error {
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background: #fee;
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color: #c00;
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}
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</style>
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</head>
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<body>
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<div class="header">
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<h1>🎭 Ritz Framework</h1>
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<p>Python components running in WebAssembly</p>
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</div>
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<div class="status" id="status">Loading...</div>
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<div id="app"></div>
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<script src="ritz.js"></script>
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<script>
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// Configuration
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const COMPONENT_NAME = 'HelloWorld'; // Change this to your component name
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const WASM_FILE = '../examples/HelloWorld.wasm';
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async function loadComponent() {
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const status = document.getElementById('status');
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const appRoot = document.getElementById('app');
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try {
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// Initialize Ritz runtime
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status.textContent = '⏳ Initializing Ritz runtime...';
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const runtime = new RitzRuntime(appRoot);
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// Load WASM module
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status.textContent = `⏳ Loading ${WASM_FILE}...`;
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const response = await fetch(WASM_FILE);
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if (!response.ok) {
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throw new Error(`Failed to fetch ${WASM_FILE}: ${response.status}`);
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}
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const wasmBytes = await response.arrayBuffer();
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// Set up Module for Emscripten
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window.Module = {
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wasmBinary: wasmBytes,
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ritz: runtime, // Provide runtime to WASM
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onRuntimeInitialized: function() {
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status.textContent = '⏳ Rendering component...';
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try {
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// Call the render function
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const renderFn = Module[`_render_${COMPONENT_NAME}`];
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if (!renderFn) {
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throw new Error(`Component render_${COMPONENT_NAME} not found in WASM exports`);
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}
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// Render the component
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Module.ccall(`render_${COMPONENT_NAME}`, null, [], []);
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status.textContent = `✅ ${COMPONENT_NAME} rendered successfully!`;
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status.className = 'status';
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} catch (error) {
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status.textContent = `❌ Render error: ${error.message}`;
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status.className = 'status error';
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console.error('Render error:', error);
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}
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},
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print: function(text) {
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console.log('[WASM]', text);
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},
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printErr: function(text) {
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console.error('[WASM]', text);
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}
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};
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// Load the Emscripten JS glue code
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status.textContent = '⏳ Loading WASM runtime...';
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const script = document.createElement('script');
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script.src = WASM_FILE.replace('.wasm', '.js');
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script.onerror = () => {
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throw new Error('Failed to load WASM JS glue code');
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};
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document.body.appendChild(script);
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} catch (error) {
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status.textContent = `❌ Error: ${error.message}`;
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status.className = 'status error';
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console.error('Load error:', error);
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}
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}
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// Start loading when DOM is ready
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', loadComponent);
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} else {
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loadComponent();
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}
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</script>
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</body>
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</html>
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@@ -0,0 +1,131 @@
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/* Ritz Debug Bar Styles */
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.ritz-debug {
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position: fixed;
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top: 0;
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right: 0;
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width: 400px;
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height: 100vh;
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background: #1e1e1e;
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color: #d4d4d4;
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font-family: 'Consolas', 'Monaco', monospace;
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font-size: 13px;
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box-shadow: -2px 0 10px rgba(0,0,0,0.3);
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transition: transform 0.3s ease;
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z-index: 9999;
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overflow-y: auto;
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}
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.ritz-debug.hidden {
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transform: translateX(100%);
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}
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.debug-header {
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background: #252525;
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padding: 15px;
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border-bottom: 1px solid #3e3e3e;
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display: flex;
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justify-content: space-between;
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align-items: center;
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}
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.debug-header h3 {
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margin: 0;
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font-size: 16px;
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font-weight: 600;
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}
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.debug-header button {
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background: none;
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border: none;
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color: #d4d4d4;
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font-size: 24px;
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cursor: pointer;
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padding: 0;
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width: 30px;
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height: 30px;
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line-height: 1;
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}
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.debug-header button:hover {
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color: #fff;
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}
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.status {
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margin: 15px;
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padding: 10px;
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background: #2d2d30;
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border-left: 3px solid #007acc;
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border-radius: 3px;
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font-size: 12px;
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}
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.status.success {
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border-left-color: #4ec9b0;
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}
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.status.error {
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border-left-color: #f48771;
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color: #f48771;
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}
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.debug-content {
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padding: 15px;
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}
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.debug-section {
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margin-bottom: 20px;
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}
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.debug-section h4 {
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margin: 0 0 10px 0;
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font-size: 12px;
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text-transform: uppercase;
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color: #858585;
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font-weight: 600;
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}
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.debug-section pre {
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background: #252525;
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padding: 10px;
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border-radius: 3px;
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overflow-x: auto;
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margin: 0;
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font-size: 11px;
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line-height: 1.6;
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}
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/* Toggle hint */
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.debug-toggle-hint {
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position: fixed;
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bottom: 20px;
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right: 20px;
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background: #252525;
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color: #d4d4d4;
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padding: 8px 12px;
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border-radius: 4px;
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font-family: 'Consolas', 'Monaco', monospace;
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font-size: 11px;
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box-shadow: 0 2px 8px rgba(0,0,0,0.3);
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opacity: 0;
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animation: fadeInOut 3s ease-in-out;
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pointer-events: none;
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z-index: 10000;
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}
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@keyframes fadeInOut {
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0%, 100% { opacity: 0; }
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10%, 90% { opacity: 1; }
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}
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/* App container default styles */
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#app {
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max-width: 1200px;
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margin: 0 auto;
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padding: 20px;
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transition: margin-right 0.3s ease;
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}
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body.debug-open #app {
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margin-right: 400px;
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}
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@@ -0,0 +1,83 @@
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/**
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* Ritz Debug Bar Controller
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*/
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class RitzDebug {
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constructor() {
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this.debugBar = document.getElementById('ritz-debug');
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this.isOpen = false;
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// Setup keyboard shortcut (Ctrl+`)
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document.addEventListener('keydown', (e) => {
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if (e.ctrlKey && e.key === '`') {
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e.preventDefault();
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this.toggle();
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}
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});
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// Show hint on first load
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this.showHint();
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}
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toggle() {
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this.isOpen = !this.isOpen;
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if (this.debugBar) {
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if (this.isOpen) {
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this.debugBar.classList.remove('hidden');
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document.body.classList.add('debug-open');
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} else {
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this.debugBar.classList.add('hidden');
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document.body.classList.remove('debug-open');
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}
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}
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}
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open() {
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this.isOpen = true;
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if (this.debugBar) {
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this.debugBar.classList.remove('hidden');
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document.body.classList.add('debug-open');
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}
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}
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close() {
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this.isOpen = false;
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if (this.debugBar) {
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this.debugBar.classList.add('hidden');
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document.body.classList.remove('debug-open');
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}
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}
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showHint() {
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// Show toggle hint for 3 seconds
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const hint = document.createElement('div');
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hint.className = 'debug-toggle-hint';
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hint.textContent = 'Press Ctrl+` to toggle debug';
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document.body.appendChild(hint);
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setTimeout(() => {
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hint.remove();
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}, 3000);
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}
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log(message, type = 'info') {
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const status = document.getElementById('status');
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if (status) {
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status.textContent = message;
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status.className = 'status ' + type;
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}
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console.log(`[Ritz] ${message}`);
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}
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}
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// Initialize debug controller
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const ritzDebug = new RitzDebug();
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// Export
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if (typeof module !== 'undefined' && module.exports) {
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module.exports = RitzDebug;
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} else {
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window.RitzDebug = RitzDebug;
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window.ritzDebug = ritzDebug;
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}
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@@ -0,0 +1,267 @@
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/**
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* Ritz Runtime - WebAssembly DOM Bridge
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*
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* Provides the runtime environment for Ritz components compiled to WASM.
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*/
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class RitzRuntime {
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constructor(rootElement) {
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this.rootElement = rootElement || document.getElementById('app');
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this.nodes = new Map();
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this.nextNodeId = 1;
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this.log = [];
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this.wasmInstance = null;
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this.debugEnabled = true;
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}
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// ===== DOM Manipulation Bridge =====
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js_create_element(tagPtr) {
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const tag = this.readString(tagPtr);
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const element = document.createElement(tag);
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const id = this.nextNodeId++;
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this.nodes.set(id, element);
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this._log(`createElement("${tag}") = ${id}`);
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return id;
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}
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js_create_text(textPtr) {
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const text = this.readString(textPtr);
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const textNode = document.createTextNode(text);
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const id = this.nextNodeId++;
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this.nodes.set(id, textNode);
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this._log(`createTextNode("${text}") = ${id}`);
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return id;
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}
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js_append_child(parentId, childId) {
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const parent = this.nodes.get(parentId);
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const child = this.nodes.get(childId);
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if (parent && child) {
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parent.appendChild(child);
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this._log(`appendChild(${parentId}, ${childId})`);
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}
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}
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js_set_attribute(elemId, namePtr, valuePtr) {
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const element = this.nodes.get(elemId);
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const name = this.readString(namePtr);
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const value = this.readString(valuePtr);
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if (element) {
|
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if (name === 'class') {
|
||||
element.className = value;
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||||
} else {
|
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element.setAttribute(name, value);
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}
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this._log(`setAttribute(${elemId}, "${name}", "${value}")`);
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||||
}
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}
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js_bind_event(elemId, eventNamePtr, handlerNamePtr) {
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const element = this.nodes.get(elemId);
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const eventName = this.readString(eventNamePtr);
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||||
const handlerName = this.readString(handlerNamePtr);
|
||||
|
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if (element && this.wasmInstance) {
|
||||
const handler = this.wasmInstance.exports[handlerName];
|
||||
if (handler) {
|
||||
element.addEventListener(eventName, () => {
|
||||
this._log(`[Event] ${eventName} → ${handlerName}()`);
|
||||
handler();
|
||||
this.updateSignals();
|
||||
});
|
||||
this._log(`bindEvent(${elemId}, "${eventName}", "${handlerName}")`);
|
||||
} else {
|
||||
console.error(`Handler ${handlerName} not found in WASM exports`);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
js_set_root(elemId) {
|
||||
const element = this.nodes.get(elemId);
|
||||
if (element) {
|
||||
this.rootElement.innerHTML = '';
|
||||
this.rootElement.appendChild(element);
|
||||
this._log(`setRoot(${elemId})`);
|
||||
}
|
||||
}
|
||||
|
||||
js_update_text_content(nodeId, textPtr) {
|
||||
const node = this.nodes.get(nodeId);
|
||||
const text = this.readString(textPtr);
|
||||
if (node) {
|
||||
node.textContent = text;
|
||||
this._log(`updateTextContent(${nodeId}, "${text}")`);
|
||||
}
|
||||
}
|
||||
|
||||
// ===== Signal Management =====
|
||||
|
||||
updateSignals() {
|
||||
// Discover and update all signals
|
||||
if (!this.wasmInstance) return;
|
||||
|
||||
const exports = this.wasmInstance.exports;
|
||||
|
||||
// Find all get_* functions (signal getters)
|
||||
for (const [name, fn] of Object.entries(exports)) {
|
||||
if (name.startsWith('get_') && typeof fn === 'function') {
|
||||
const signalName = name.substring(4); // Remove 'get_' prefix
|
||||
const value = fn();
|
||||
this._log(`[Signal] ${signalName} = ${value}`);
|
||||
|
||||
// Update DOM elements bound to this signal
|
||||
// TODO: Track signal-to-DOM bindings during render for efficiency
|
||||
this.updateSignalDisplay(signalName, value);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
updateSignalDisplay(signalName, value) {
|
||||
// Find DOM elements that should display this signal
|
||||
// For now, update any element with class matching signal name or data-signal attribute
|
||||
const selectors = [
|
||||
`[data-signal="${signalName}"]`,
|
||||
`.${signalName}`,
|
||||
'.count', // Hardcoded for demo - TODO: track bindings properly
|
||||
];
|
||||
|
||||
selectors.forEach(selector => {
|
||||
const elements = document.querySelectorAll(selector);
|
||||
elements.forEach(el => {
|
||||
// Check if text contains the signal name or looks like a counter
|
||||
const text = el.textContent;
|
||||
if (text.includes(signalName) || text.match(/\d+/)) {
|
||||
// Replace the number in the text
|
||||
el.textContent = text.replace(/\d+/, value);
|
||||
}
|
||||
});
|
||||
});
|
||||
}
|
||||
|
||||
// ===== Memory & String Utilities =====
|
||||
|
||||
readString(ptr) {
|
||||
if (!this.memory) return '';
|
||||
const bytes = new Uint8Array(this.memory.buffer, ptr);
|
||||
let length = 0;
|
||||
while (bytes[length] !== 0) length++;
|
||||
return new TextDecoder().decode(bytes.slice(0, length));
|
||||
}
|
||||
|
||||
setMemory(memory) {
|
||||
this.memory = memory;
|
||||
}
|
||||
|
||||
setWasmInstance(instance) {
|
||||
this.wasmInstance = instance;
|
||||
}
|
||||
|
||||
// ===== Logging & Debug =====
|
||||
|
||||
_log(message) {
|
||||
if (this.debugEnabled) {
|
||||
this.log.push(message);
|
||||
}
|
||||
}
|
||||
|
||||
getLog() {
|
||||
return this.log;
|
||||
}
|
||||
|
||||
clearLog() {
|
||||
this.log = [];
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* RitzLoader - Simplified WASM loading
|
||||
*/
|
||||
class RitzLoader {
|
||||
constructor(options = {}) {
|
||||
this.rootElement = options.rootElement || document.getElementById('app');
|
||||
this.statusElement = options.statusElement || document.getElementById('status');
|
||||
this.onLoad = options.onLoad || (() => {});
|
||||
this.onError = options.onError || ((err) => console.error(err));
|
||||
}
|
||||
|
||||
async load(wasmPath, componentName) {
|
||||
try {
|
||||
this.setStatus('⏳ Creating runtime...');
|
||||
const runtime = new RitzRuntime(this.rootElement);
|
||||
|
||||
this.setStatus(`⏳ Loading ${wasmPath}...`);
|
||||
const response = await fetch(wasmPath);
|
||||
if (!response.ok) {
|
||||
throw new Error(`Failed to load ${wasmPath}: ${response.status}`);
|
||||
}
|
||||
|
||||
const wasmBytes = await response.arrayBuffer();
|
||||
|
||||
this.setStatus('⏳ Instantiating WASM...');
|
||||
|
||||
// Create imports for WASM
|
||||
const imports = {
|
||||
env: {
|
||||
js_create_element: (ptr) => runtime.js_create_element(ptr),
|
||||
js_create_text: (ptr) => runtime.js_create_text(ptr),
|
||||
js_append_child: (p, c) => runtime.js_append_child(p, c),
|
||||
js_set_attribute: (e, n, v) => runtime.js_set_attribute(e, n, v),
|
||||
js_set_root: (e) => runtime.js_set_root(e),
|
||||
js_bind_event: (e, n, h) => runtime.js_bind_event(e, n, h),
|
||||
js_update_text_content: (n, t) => runtime.js_update_text_content(n, t),
|
||||
}
|
||||
};
|
||||
|
||||
const { instance } = await WebAssembly.instantiate(wasmBytes, imports);
|
||||
|
||||
// Setup runtime
|
||||
runtime.setMemory(instance.exports.memory);
|
||||
runtime.setWasmInstance(instance);
|
||||
|
||||
this.setStatus(`⏳ Rendering ${componentName}...`);
|
||||
|
||||
// Call the render function
|
||||
const renderFn = instance.exports[`render_${componentName}`];
|
||||
if (!renderFn) {
|
||||
throw new Error(`render_${componentName} not found in WASM exports`);
|
||||
}
|
||||
renderFn();
|
||||
|
||||
// Update signals
|
||||
runtime.updateSignals();
|
||||
|
||||
this.setStatus(`✅ ${componentName} loaded!`, 'success');
|
||||
|
||||
// Make runtime globally available for debugging
|
||||
window.ritzRuntime = runtime;
|
||||
window.ritzInstance = instance;
|
||||
|
||||
this.onLoad(runtime, instance);
|
||||
|
||||
return { runtime, instance };
|
||||
|
||||
} catch (error) {
|
||||
this.setStatus(`❌ Error: ${error.message}`, 'error');
|
||||
this.onError(error);
|
||||
throw error;
|
||||
}
|
||||
}
|
||||
|
||||
setStatus(message, type = '') {
|
||||
if (this.statusElement) {
|
||||
this.statusElement.textContent = message;
|
||||
this.statusElement.className = 'status ' + type;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// Export for use in modules or global scope
|
||||
if (typeof module !== 'undefined' && module.exports) {
|
||||
module.exports = { RitzRuntime, RitzLoader };
|
||||
} else {
|
||||
window.RitzRuntime = RitzRuntime;
|
||||
window.RitzLoader = RitzLoader;
|
||||
}
|
||||
+112
@@ -0,0 +1,112 @@
|
||||
/**
|
||||
* Ritz Runtime - DOM Bridge for WASM
|
||||
*
|
||||
* Provides DOM manipulation functions called by WASM code.
|
||||
*/
|
||||
|
||||
class RitzRuntime {
|
||||
constructor(rootElement) {
|
||||
this.rootElement = rootElement || document.body;
|
||||
this.nodes = new Map(); // Map of node IDs to DOM nodes
|
||||
this.nextNodeId = 1;
|
||||
this.rootNodeId = null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a DOM element and return its ID
|
||||
*/
|
||||
createElement(tag) {
|
||||
const element = document.createElement(tag);
|
||||
const id = this.nextNodeId++;
|
||||
this.nodes.set(id, element);
|
||||
console.log(`[Ritz] Created element <${tag}> with ID ${id}`);
|
||||
return id;
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a text node and return its ID
|
||||
*/
|
||||
createTextNode(text) {
|
||||
const textNode = document.createTextNode(text);
|
||||
const id = this.nextNodeId++;
|
||||
this.nodes.set(id, textNode);
|
||||
console.log(`[Ritz] Created text node "${text}" with ID ${id}`);
|
||||
return id;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append child to parent
|
||||
*/
|
||||
appendChild(parentId, childId) {
|
||||
const parent = this.nodes.get(parentId);
|
||||
const child = this.nodes.get(childId);
|
||||
|
||||
if (!parent || !child) {
|
||||
console.error(`[Ritz] appendChild failed: parent=${parentId}, child=${childId}`);
|
||||
return;
|
||||
}
|
||||
|
||||
parent.appendChild(child);
|
||||
console.log(`[Ritz] Appended node ${childId} to node ${parentId}`);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set an attribute on an element
|
||||
*/
|
||||
setAttribute(elemId, name, value) {
|
||||
const element = this.nodes.get(elemId);
|
||||
|
||||
if (!element) {
|
||||
console.error(`[Ritz] setAttribute failed: element=${elemId}`);
|
||||
return;
|
||||
}
|
||||
|
||||
// Handle special cases
|
||||
if (name === 'class') {
|
||||
element.className = value;
|
||||
} else {
|
||||
element.setAttribute(name, value);
|
||||
}
|
||||
|
||||
console.log(`[Ritz] Set attribute ${name}="${value}" on node ${elemId}`);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the root element and mount it to DOM
|
||||
*/
|
||||
setRoot(elemId) {
|
||||
const element = this.nodes.get(elemId);
|
||||
|
||||
if (!element) {
|
||||
console.error(`[Ritz] setRoot failed: element=${elemId}`);
|
||||
return;
|
||||
}
|
||||
|
||||
this.rootNodeId = elemId;
|
||||
|
||||
// Clear the root element
|
||||
this.rootElement.innerHTML = '';
|
||||
|
||||
// Mount the component
|
||||
this.rootElement.appendChild(element);
|
||||
|
||||
console.log(`[Ritz] Mounted component (node ${elemId}) to DOM`);
|
||||
}
|
||||
|
||||
/**
|
||||
* Clear all nodes (for hot reload)
|
||||
*/
|
||||
clear() {
|
||||
this.nodes.clear();
|
||||
this.nextNodeId = 1;
|
||||
this.rootNodeId = null;
|
||||
this.rootElement.innerHTML = '';
|
||||
}
|
||||
}
|
||||
|
||||
// Export for use in module or global scope
|
||||
if (typeof module !== 'undefined' && module.exports) {
|
||||
module.exports = RitzRuntime;
|
||||
} else {
|
||||
window.RitzRuntime = RitzRuntime;
|
||||
}
|
||||
Reference in new issue
Block a user