54 lines
1.3 KiB
HTML
54 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Examples - Buffer</title>
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</head>
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<body>
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<h1>Buffer</h1>
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<a href="index.html">List</a> - <a href="buffer.py">Source</a> - <a href="buffer.wat">WebAssembly</a>
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<div style="white-space: pre;" id="results"></div>
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<script type="text/javascript">
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let importObject = {};
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let results = document.getElementById('results');
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function log(txt)
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{
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let span = document.createElement('span');
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span.innerHTML = txt;
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results.appendChild(span);
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let br = document.createElement('br');
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results.appendChild(br);
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}
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WebAssembly.instantiateStreaming(fetch('buffer.wasm'), importObject)
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.then(app => {
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// Allocate room within the memory of the WebAssembly class
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let size = 8;
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// TODO: Use bytes constructor
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let offset = app.instance.exports.___new_reference___(size);
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new Uint32Array(app.instance.exports.memory.buffer, offset, 1)[0] = size;
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var i8arr = new Uint8Array(app.instance.exports.memory.buffer, offset + 4, size);
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//Fill it
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let sum = 0;
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for (var i = 0; i < size; i++) {
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i8arr[i] = i + 5;
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sum += i8arr[i];
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let from_wasm = app.instance.exports.index(offset, i);
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log('i8arr[' + i + '] = ' + from_wasm);
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}
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log('expected result = ' + sum);
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log('actual result = ' + app.instance.exports.sum(offset));
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});
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</script>
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</body>
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</html>
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