walt-compiler
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Alternative syntax for WebAssembly text format
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<a href="../../index.html">All files</a> / <a href="index.html">src/generator</a> generate-data.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">// @flow
// import { stringEncoder } from '../utils/string';
import { u32 } from 'wasm-types';
import OutputStream from '../utils/output-stream';
export default function generateData(
statics: any,
DATA_SECTION_HEADER_SIZE: number
) {
// Reserve N bytes for data size header
let offsetAccumulator = DATA_SECTION_HEADER_SIZE;
const map: { [string]: number } = {};
const data = Object.entries(statics).reduce(
(acc, [key, encoded]: [string, any]) => {
acc.push({ offset: Number(offsetAccumulator), data: encoded });
map[key] = offsetAccumulator;
offsetAccumulator += encoded.size;
return acc;
},
[]
);
// reserved stream for the size header
const lengthStream = new OutputStream();
lengthStream.push(u32, offsetAccumulator, String(offsetAccumulator));
return {
data: [{ offset: 0, data: lengthStream }, ...data],
map,
};
}
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