walt-compiler
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Alternative syntax for WebAssembly text format
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<title>Code coverage report for src/emitter/section/element.js</title>
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<a href="../../../index.html">All files</a> / <a href="index.html">src/emitter/section</a> element.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">// @flow
import { u8 } from 'wasm-types';
import { varuint32 } from '../numbers';
import opcode from '../opcode';
import OutputStream from '../../utils/output-stream';
type Element = {
functionIndex: number,
};
const emitElement = (stream: OutputStream) => (
{ functionIndex }: Element,
index: number
) => {
stream.push(varuint32, 0, 'table index');
stream.push(u8, opcode.i32Const.code, 'offset');
stream.push(varuint32, index, index.toString());
stream.push(u8, opcode.End.code, 'end');
stream.push(varuint32, 1, 'number of elements');
stream.push(varuint32, functionIndex, 'function index');
};
const emit = (elements: Element[]) => {
const stream = new OutputStream();
stream.push(varuint32, elements.length, 'count');
elements.forEach(emitElement(stream));
return stream;
};
export default emit;
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