diff options
Diffstat (limited to 'node_modules/@webassemblyjs/helper-wasm-section/lib/create.js')
-rw-r--r-- | node_modules/@webassemblyjs/helper-wasm-section/lib/create.js | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/node_modules/@webassemblyjs/helper-wasm-section/lib/create.js b/node_modules/@webassemblyjs/helper-wasm-section/lib/create.js deleted file mode 100644 index 9506eac..0000000 --- a/node_modules/@webassemblyjs/helper-wasm-section/lib/create.js +++ /dev/null @@ -1,121 +0,0 @@ -"use strict"; - -Object.defineProperty(exports, "__esModule", { - value: true -}); -exports.createEmptySection = createEmptySection; - -var _wasmGen = require("@webassemblyjs/wasm-gen"); - -var _helperBuffer = require("@webassemblyjs/helper-buffer"); - -var _helperWasmBytecode = _interopRequireDefault(require("@webassemblyjs/helper-wasm-bytecode")); - -var t = _interopRequireWildcard(require("@webassemblyjs/ast")); - -function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } } - -function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } - -function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); } - -function findLastSection(ast, forSection) { - var targetSectionId = _helperWasmBytecode.default.sections[forSection]; // $FlowIgnore: metadata can not be empty - - var moduleSections = ast.body[0].metadata.sections; - var lastSection; - var lastId = 0; - - for (var i = 0, len = moduleSections.length; i < len; i++) { - var section = moduleSections[i]; // Ignore custom section since they can actually occur everywhere - - if (section.section === "custom") { - continue; - } - - var sectionId = _helperWasmBytecode.default.sections[section.section]; - - if (targetSectionId > lastId && targetSectionId < sectionId) { - return lastSection; - } - - lastId = sectionId; - lastSection = section; - } - - return lastSection; -} - -function createEmptySection(ast, uint8Buffer, section) { - // previous section after which we are going to insert our section - var lastSection = findLastSection(ast, section); - var start, end; - /** - * It's the first section - */ - - if (lastSection == null || lastSection.section === "custom") { - start = 8 - /* wasm header size */ - ; - end = start; - } else { - start = lastSection.startOffset + lastSection.size.value + 1; - end = start; - } // section id - - - start += 1; - var sizeStartLoc = { - line: -1, - column: start - }; - var sizeEndLoc = { - line: -1, - column: start + 1 - }; // 1 byte for the empty vector - - var size = t.withLoc(t.numberLiteralFromRaw(1), sizeEndLoc, sizeStartLoc); - var vectorOfSizeStartLoc = { - line: -1, - column: sizeEndLoc.column - }; - var vectorOfSizeEndLoc = { - line: -1, - column: sizeEndLoc.column + 1 - }; - var vectorOfSize = t.withLoc(t.numberLiteralFromRaw(0), vectorOfSizeEndLoc, vectorOfSizeStartLoc); - var sectionMetadata = t.sectionMetadata(section, start, size, vectorOfSize); - var sectionBytes = (0, _wasmGen.encodeNode)(sectionMetadata); - uint8Buffer = (0, _helperBuffer.overrideBytesInBuffer)(uint8Buffer, start - 1, end, sectionBytes); // Add section into the AST for later lookups - - if (_typeof(ast.body[0].metadata) === "object") { - // $FlowIgnore: metadata can not be empty - ast.body[0].metadata.sections.push(sectionMetadata); - t.sortSectionMetadata(ast.body[0]); - } - /** - * Update AST - */ - // Once we hit our section every that is after needs to be shifted by the delta - - - var deltaBytes = +sectionBytes.length; - var encounteredSection = false; - t.traverse(ast, { - SectionMetadata: function SectionMetadata(path) { - if (path.node.section === section) { - encounteredSection = true; - return; - } - - if (encounteredSection === true) { - t.shiftSection(ast, path.node, deltaBytes); - } - } - }); - return { - uint8Buffer: uint8Buffer, - sectionMetadata: sectionMetadata - }; -}
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