walt-compiler

<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/core/function-pointer.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> function-pointer.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 100% Statements 37/37 </div> <div class='fl pad1y space-right2'> 100% Branches 16/16 </div> <div class='fl pad1y space-right2'> 100% Functions 11/11 </div> <div class='fl pad1y space-right2'> 100% Lines 37/37 </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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117</td><td class="line-coverage quiet">            23x 23x 23x 23x               90x   90x     90x 100x     100x 4x                 96x     90x 643x 643x   643x 636x     7x 3x   7x                   90x 173x 173x 173x 172x     1x         1x               90x 260x 260x 260x   260x 255x     5x 5x         5x     6x   5x                                </td><td class="text"><pre class="prettyprint lang-js">/** * Function pointer plugin. * Handles function pointer declaration and indirect calls. * * @flow */ import Syntax from 'walt-syntax'; import { find } from 'walt-parser-tools/scope'; import { extendNode } from '../utils/extend-node'; import { TYPE_INDEX, GLOBAL_INDEX, FUNCTION_INDEX, } from '../semantics/metadata'; import type { SemanticPlugin } from '../flow/types';   export default function functionPointer(): SemanticPlugin { return { semantics() { return { // Handle Table definitions [Syntax.ImmutableDeclaration]: next => function defineTable(args) { const [decl, context] = args;   // Short circuit since memory is a special type of declaration if (!context.locals && decl.type === 'Table') { return { ...decl, meta: { ...decl.meta, [GLOBAL_INDEX]: -1, }, }; }   return next(args); }, [Syntax.Identifier]: next => function pointer(args) { const [node, context] = args; const { functions, table, scopes } = context;   if (find(scopes, node.value) || !functions[node.value]) { return next(args); }   if (table[node.value] == null) { table[node.value] = functions[node.value]; } return { ...node, type: 'i32', meta: { [FUNCTION_INDEX]: functions[node.value].meta[FUNCTION_INDEX], }, value: Object.keys(table).indexOf(node.value), Type: Syntax.FunctionPointer, }; }, [Syntax.FunctionResult]: next => (args, transform) => { const [node, context] = args; const { types } = context; if (!types[node.type]) { return next(args); }   return next([ extendNode( { type: 'i32', meta: { ALIAS: node.type }, params: node.params.map(p => transform([p, context])), }, node ), context, ]); }, [Syntax.FunctionCall]: next => function indirectCall(args, transform) { const [call, context] = args; const { scopes, types } = context; const ref = find(scopes, call.value); // Nothing we need transform if (!ref) { return next(args); }   const typedef = types[ref.type]; const typeIndex = Object.keys(types).indexOf(ref.type);   // We will short all of the other middleware so transform the parameters // here and append an identifier which will be used to get the table // value const params = [ ...call.params.slice(1), { ...ref, Type: Syntax.Identifier }, ].map(p => transform([p, context]));   return { ...call, meta: { ...call.meta, ...ref.meta, [TYPE_INDEX]: typeIndex, }, type: typedef != null ? typedef.type : call.type, params, Type: Syntax.IndirectFunctionCall, }; }, }; }, }; }  </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>