diff options
Diffstat (limited to 'node_modules/webpack/lib/wasm-sync/WebAssemblyParser.js')
| -rw-r--r-- | node_modules/webpack/lib/wasm-sync/WebAssemblyParser.js | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/node_modules/webpack/lib/wasm-sync/WebAssemblyParser.js b/node_modules/webpack/lib/wasm-sync/WebAssemblyParser.js deleted file mode 100644 index bebd276f..00000000 --- a/node_modules/webpack/lib/wasm-sync/WebAssemblyParser.js +++ /dev/null @@ -1,203 +0,0 @@ -/* - MIT License http://www.opensource.org/licenses/mit-license.php - Author Tobias Koppers @sokra -*/ - -"use strict"; - -const t = require("@webassemblyjs/ast"); -const { moduleContextFromModuleAST } = require("@webassemblyjs/ast"); -const { decode } = require("@webassemblyjs/wasm-parser"); -const Parser = require("../Parser"); -const StaticExportsDependency = require("../dependencies/StaticExportsDependency"); -const WebAssemblyExportImportedDependency = require("../dependencies/WebAssemblyExportImportedDependency"); -const WebAssemblyImportDependency = require("../dependencies/WebAssemblyImportDependency"); - -/** @typedef {import("../Module")} Module */ -/** @typedef {import("../Module").BuildInfo} BuildInfo */ -/** @typedef {import("../Module").BuildMeta} BuildMeta */ -/** @typedef {import("../Parser").ParserState} ParserState */ -/** @typedef {import("../Parser").PreparsedAst} PreparsedAst */ - -const JS_COMPAT_TYPES = new Set(["i32", "i64", "f32", "f64"]); - -/** - * @param {t.Signature} signature the func signature - * @returns {null | string} the type incompatible with js types - */ -const getJsIncompatibleType = signature => { - for (const param of signature.params) { - if (!JS_COMPAT_TYPES.has(param.valtype)) { - return `${param.valtype} as parameter`; - } - } - for (const type of signature.results) { - if (!JS_COMPAT_TYPES.has(type)) return `${type} as result`; - } - return null; -}; - -/** - * TODO why are there two different Signature types? - * @param {t.FuncSignature} signature the func signature - * @returns {null | string} the type incompatible with js types - */ -const getJsIncompatibleTypeOfFuncSignature = signature => { - for (const param of signature.args) { - if (!JS_COMPAT_TYPES.has(param)) { - return `${param} as parameter`; - } - } - for (const type of signature.result) { - if (!JS_COMPAT_TYPES.has(type)) return `${type} as result`; - } - return null; -}; - -const decoderOpts = { - ignoreCodeSection: true, - ignoreDataSection: true, - - // this will avoid having to lookup with identifiers in the ModuleContext - ignoreCustomNameSection: true -}; - -class WebAssemblyParser extends Parser { - /** - * @param {{}=} options parser options - */ - constructor(options) { - super(); - this.hooks = Object.freeze({}); - this.options = options; - } - - /** - * @param {string | Buffer | PreparsedAst} source the source to parse - * @param {ParserState} state the parser state - * @returns {ParserState} the parser state - */ - parse(source, state) { - if (!Buffer.isBuffer(source)) { - throw new Error("WebAssemblyParser input must be a Buffer"); - } - - // flag it as ESM - /** @type {BuildInfo} */ - (state.module.buildInfo).strict = true; - /** @type {BuildMeta} */ - (state.module.buildMeta).exportsType = "namespace"; - - // parse it - const program = decode(source, decoderOpts); - const module = program.body[0]; - - const moduleContext = moduleContextFromModuleAST(module); - - // extract imports and exports - /** @type {string[]} */ - const exports = []; - let jsIncompatibleExports = (state.module.buildMeta.jsIncompatibleExports = - undefined); - - /** @type {TODO[]} */ - const importedGlobals = []; - t.traverse(module, { - ModuleExport({ node }) { - const descriptor = node.descr; - - if (descriptor.exportType === "Func") { - const funcIdx = descriptor.id.value; - - /** @type {t.FuncSignature} */ - const funcSignature = moduleContext.getFunction(funcIdx); - - const incompatibleType = - getJsIncompatibleTypeOfFuncSignature(funcSignature); - - if (incompatibleType) { - if (jsIncompatibleExports === undefined) { - jsIncompatibleExports = - state.module.buildMeta.jsIncompatibleExports = {}; - } - jsIncompatibleExports[node.name] = incompatibleType; - } - } - - exports.push(node.name); - - if (node.descr && node.descr.exportType === "Global") { - const refNode = importedGlobals[node.descr.id.value]; - if (refNode) { - const dep = new WebAssemblyExportImportedDependency( - node.name, - refNode.module, - refNode.name, - refNode.descr.valtype - ); - - state.module.addDependency(dep); - } - } - }, - - Global({ node }) { - const init = node.init[0]; - - let importNode = null; - - if (init.id === "get_global") { - const globalIdx = init.args[0].value; - - if (globalIdx < importedGlobals.length) { - importNode = importedGlobals[globalIdx]; - } - } - - importedGlobals.push(importNode); - }, - - ModuleImport({ node }) { - /** @type {false | string} */ - let onlyDirectImport = false; - - if (t.isMemory(node.descr) === true) { - onlyDirectImport = "Memory"; - } else if (t.isTable(node.descr) === true) { - onlyDirectImport = "Table"; - } else if (t.isFuncImportDescr(node.descr) === true) { - const incompatibleType = getJsIncompatibleType( - /** @type {t.Signature} */ (node.descr.signature) - ); - if (incompatibleType) { - onlyDirectImport = `Non-JS-compatible Func Signature (${incompatibleType})`; - } - } else if (t.isGlobalType(node.descr) === true) { - const type = /** @type {string} */ (node.descr.valtype); - if (!JS_COMPAT_TYPES.has(type)) { - onlyDirectImport = `Non-JS-compatible Global Type (${type})`; - } - } - - const dep = new WebAssemblyImportDependency( - node.module, - node.name, - node.descr, - onlyDirectImport - ); - - state.module.addDependency(dep); - - if (t.isGlobalType(node.descr)) { - importedGlobals.push(node); - } - } - }); - - state.module.addDependency(new StaticExportsDependency(exports, false)); - - return state; - } -} - -module.exports = WebAssemblyParser; |