| function _sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } |
| |
| function _slicedToArray(arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return _sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } } |
| |
| 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); } |
| |
| import { signatures } from "./signatures"; |
| import { traverse } from "./traverse"; |
| import constants from "@webassemblyjs/helper-wasm-bytecode"; |
| import { getSectionForNode } from "@webassemblyjs/helper-wasm-bytecode"; |
| export function isAnonymous(ident) { |
| return ident.raw === ""; |
| } |
| export function getSectionMetadata(ast, name) { |
| var section; |
| traverse(ast, { |
| SectionMetadata: function (_SectionMetadata) { |
| function SectionMetadata(_x) { |
| return _SectionMetadata.apply(this, arguments); |
| } |
| |
| SectionMetadata.toString = function () { |
| return _SectionMetadata.toString(); |
| }; |
| |
| return SectionMetadata; |
| }(function (_ref) { |
| var node = _ref.node; |
| |
| if (node.section === name) { |
| section = node; |
| } |
| }) |
| }); |
| return section; |
| } |
| export function getSectionMetadatas(ast, name) { |
| var sections = []; |
| traverse(ast, { |
| SectionMetadata: function (_SectionMetadata2) { |
| function SectionMetadata(_x2) { |
| return _SectionMetadata2.apply(this, arguments); |
| } |
| |
| SectionMetadata.toString = function () { |
| return _SectionMetadata2.toString(); |
| }; |
| |
| return SectionMetadata; |
| }(function (_ref2) { |
| var node = _ref2.node; |
| |
| if (node.section === name) { |
| sections.push(node); |
| } |
| }) |
| }); |
| return sections; |
| } |
| export function sortSectionMetadata(m) { |
| if (m.metadata == null) { |
| console.warn("sortSectionMetadata: no metadata to sort"); |
| return; |
| } // $FlowIgnore |
| |
| |
| m.metadata.sections.sort(function (a, b) { |
| var aId = constants.sections[a.section]; |
| var bId = constants.sections[b.section]; |
| |
| if (typeof aId !== "number" || typeof bId !== "number") { |
| throw new Error("Section id not found"); |
| } |
| |
| return aId - bId; |
| }); |
| } |
| export function orderedInsertNode(m, n) { |
| assertHasLoc(n); |
| var didInsert = false; |
| |
| if (n.type === "ModuleExport") { |
| m.fields.push(n); |
| return; |
| } |
| |
| m.fields = m.fields.reduce(function (acc, field) { |
| var fieldEndCol = Infinity; |
| |
| if (field.loc != null) { |
| // $FlowIgnore |
| fieldEndCol = field.loc.end.column; |
| } // $FlowIgnore: assertHasLoc ensures that |
| |
| |
| if (didInsert === false && n.loc.start.column < fieldEndCol) { |
| didInsert = true; |
| acc.push(n); |
| } |
| |
| acc.push(field); |
| return acc; |
| }, []); // Handles empty modules or n is the last element |
| |
| if (didInsert === false) { |
| m.fields.push(n); |
| } |
| } |
| export function assertHasLoc(n) { |
| if (n.loc == null || n.loc.start == null || n.loc.end == null) { |
| throw new Error("Internal failure: node (".concat(JSON.stringify(n.type), ") has no location information")); |
| } |
| } |
| export function getEndOfSection(s) { |
| assertHasLoc(s.size); |
| return s.startOffset + s.size.value + ( // $FlowIgnore |
| s.size.loc.end.column - s.size.loc.start.column); |
| } |
| export function shiftLoc(node, delta) { |
| // $FlowIgnore |
| node.loc.start.column += delta; // $FlowIgnore |
| |
| node.loc.end.column += delta; |
| } |
| export function shiftSection(ast, node, delta) { |
| if (node.type !== "SectionMetadata") { |
| throw new Error("Can not shift node " + JSON.stringify(node.type)); |
| } |
| |
| node.startOffset += delta; |
| |
| if (_typeof(node.size.loc) === "object") { |
| shiftLoc(node.size, delta); |
| } // Custom sections doesn't have vectorOfSize |
| |
| |
| if (_typeof(node.vectorOfSize) === "object" && _typeof(node.vectorOfSize.loc) === "object") { |
| shiftLoc(node.vectorOfSize, delta); |
| } |
| |
| var sectionName = node.section; // shift node locations within that section |
| |
| traverse(ast, { |
| Node: function Node(_ref3) { |
| var node = _ref3.node; |
| var section = getSectionForNode(node); |
| |
| if (section === sectionName && _typeof(node.loc) === "object") { |
| shiftLoc(node, delta); |
| } |
| } |
| }); |
| } |
| export function signatureForOpcode(object, name) { |
| var opcodeName = name; |
| |
| if (object !== undefined && object !== "") { |
| opcodeName = object + "." + name; |
| } |
| |
| var sign = signatures[opcodeName]; |
| |
| if (sign == undefined) { |
| // TODO: Uncomment this when br_table and others has been done |
| //throw new Error("Invalid opcode: "+opcodeName); |
| return [object, object]; |
| } |
| |
| return sign[0]; |
| } |
| export function getUniqueNameGenerator() { |
| var inc = {}; |
| return function () { |
| var prefix = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : "temp"; |
| |
| if (!(prefix in inc)) { |
| inc[prefix] = 0; |
| } else { |
| inc[prefix] = inc[prefix] + 1; |
| } |
| |
| return prefix + "_" + inc[prefix]; |
| }; |
| } |
| export function getStartByteOffset(n) { |
| // $FlowIgnore |
| if (typeof n.loc === "undefined" || typeof n.loc.start === "undefined") { |
| throw new Error( // $FlowIgnore |
| "Can not get byte offset without loc informations, node: " + String(n.id)); |
| } |
| |
| return n.loc.start.column; |
| } |
| export function getEndByteOffset(n) { |
| // $FlowIgnore |
| if (typeof n.loc === "undefined" || typeof n.loc.end === "undefined") { |
| throw new Error("Can not get byte offset without loc informations, node: " + n.type); |
| } |
| |
| return n.loc.end.column; |
| } |
| export function getFunctionBeginingByteOffset(n) { |
| if (!(n.body.length > 0)) { |
| throw new Error('n.body.length > 0' + " error: " + (undefined || "unknown")); |
| } |
| |
| var _n$body = _slicedToArray(n.body, 1), |
| firstInstruction = _n$body[0]; |
| |
| return getStartByteOffset(firstInstruction); |
| } |
| export function getEndBlockByteOffset(n) { |
| // $FlowIgnore |
| if (!(n.instr.length > 0 || n.body.length > 0)) { |
| throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown")); |
| } |
| |
| var lastInstruction; |
| |
| if (n.instr) { |
| // $FlowIgnore |
| lastInstruction = n.instr[n.instr.length - 1]; |
| } |
| |
| if (n.body) { |
| // $FlowIgnore |
| lastInstruction = n.body[n.body.length - 1]; |
| } |
| |
| if (!(_typeof(lastInstruction) === "object")) { |
| throw new Error('typeof lastInstruction === "object"' + " error: " + (undefined || "unknown")); |
| } |
| |
| // $FlowIgnore |
| return getStartByteOffset(lastInstruction); |
| } |
| export function getStartBlockByteOffset(n) { |
| // $FlowIgnore |
| if (!(n.instr.length > 0 || n.body.length > 0)) { |
| throw new Error('n.instr.length > 0 || n.body.length > 0' + " error: " + (undefined || "unknown")); |
| } |
| |
| var fistInstruction; |
| |
| if (n.instr) { |
| // $FlowIgnore |
| var _n$instr = _slicedToArray(n.instr, 1); |
| |
| fistInstruction = _n$instr[0]; |
| } |
| |
| if (n.body) { |
| // $FlowIgnore |
| var _n$body2 = _slicedToArray(n.body, 1); |
| |
| fistInstruction = _n$body2[0]; |
| } |
| |
| if (!(_typeof(fistInstruction) === "object")) { |
| throw new Error('typeof fistInstruction === "object"' + " error: " + (undefined || "unknown")); |
| } |
| |
| // $FlowIgnore |
| return getStartByteOffset(fistInstruction); |
| } |