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- 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);
- }
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