walt-compiler

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/core/array.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../index.html">All files</a> / <a href="index.html">src/core</a> array.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 100% Statements 47/47 </div> <div class='fl pad1y space-right2'> 100% Branches 18/18 </div> <div class='fl pad1y space-right2'> 100% Functions 13/13 </div> <div class='fl pad1y space-right2'> 100% Lines 46/46 </div> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116</td><td class="line-coverage quiet">          23x 23x 23x 23x 23x 23x     23x 23x     180x 209x       209x 199x     10x             10x       40x           40x           40x       40x       40x   40x     90x     90x 636x 636x 636x 550x         86x   90x 100x 100x   100x 77x     23x 23x 23x   23x         23x   90x 17x 17x 17x 17x   17x 1x     16x               90x    </td><td class="text"><pre class="prettyprint lang-js">/** * Array Plugin * * @flow */ import Syntax from 'walt-syntax'; import invariant from 'invariant'; import { find } from 'walt-parser-tools/scope'; import { extendNode } from '../utils/extend-node'; import withContext from '../utils/transform-with-context'; import pick from '../utils/pick'; import type { SemanticPlugin } from '../flow/types';   const shifts = { i32: 2, f32: 2, i64: 3, f64: 3 }; const NATIVE_ARRAY_TYPE = 'i32';   function semantics({ stmt }) { const declaration = next => args => { const [node, context] = args;   // For every declaration of array types we will strip the declaration type // to a core type (i32) and attach the original type reference as metadata if (!String(node.type).endsWith('[]')) { return next(args); }   const decl = extendNode( { type: NATIVE_ARRAY_TYPE, meta: { TYPE_ARRAY: node.type.slice(0, -2) }, }, node ); return next([decl, context]); };   function arrayOffset(base, offset) { const shift = shifts[base.meta.TYPE_ARRAY] || 2;   // if (shift == null) { // return null; // }   return offset.Type !== Syntax.Constant || Number(offset.value) ? stmt`(${base} + (${offset} << ${shift}));` : stmt`(${base});`; }   function sanityCheck(subscript) { return !(subscript.type == null || subscript.index == null); }   function produceSubscript([base, offset]) { let type = base.meta.TYPE_ARRAY; // if (context.userTypes[type]) { // type = 'i32'; // } const index = arrayOffset(base, offset);   return { type, index, TYPE_ARRAY: base.meta.TYPE_ARRAY }; }   return { [Syntax.Declaration]: declaration, [Syntax.ImmutableDeclaration]: declaration, [Syntax.Identifier]: next => args => { const [node, context] = args; const ref = find(context.scopes, node.value); if (!(ref && ref.meta.TYPE_ARRAY)) { return next(args); }   // Before moving on to the core parser all identifiers need to have // concrete basic types return next([extendNode(pick(['type', 'meta'], ref), node), context]); }, [Syntax.Assignment]: next => (args, t) => { const [node, context] = args; const [lhs, rhs] = node.params;   if (lhs.Type !== Syntax.ArraySubscript) { return next(args); }   const transform = withContext(t, context); const subscript = produceSubscript(lhs.params.map(transform)); const { type, index } = subscript;   invariant( sanityCheck(subscript), `PANIC - Cannot assign to subscript of ${lhs.value}` );   return transform(stmt`${type}.store(${index}, ${rhs});`); }, [Syntax.ArraySubscript]: next => (args, t) => { const [node, context] = args; const transform = withContext(t, context); const subscript = produceSubscript(node.params.map(transform)); const { type, index, TYPE_ARRAY } = subscript;   if (!sanityCheck(subscript)) { return next(args); }   return extendNode( { meta: { TYPE_ARRAY } }, transform(stmt`${type}.load(${index});`) ); }, }; } export default function arrayPlugin(): SemanticPlugin { return { semantics }; }  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Sun Dec 23 2018 17:46:36 GMT+0000 (UTC) </div> </div> <script src="../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../../sorter.js"></script> </body> </html>