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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);
}