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'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var _t = require('@babel/types');
function _interopNamespace(e) {
if (e && e.__esModule) return e;
var n = Object.create(null);
if (e) {
Object.keys(e).forEach(function (k) {
if (k !== 'default') {
var d = Object.getOwnPropertyDescriptor(e, k);
Object.defineProperty(n, k, d.get ? d : {
enumerable: true,
get: function () { return e[k]; }
});
}
});
}
n.default = e;
return Object.freeze(n);
}
var _t__namespace = /*#__PURE__*/_interopNamespace(_t);
function willPathCastToBoolean(path) {
const maybeWrapped = path;
const {
node,
parentPath
} = maybeWrapped;
if (parentPath.isLogicalExpression()) {
const {
operator,
right
} = parentPath.node;
if (operator === "&&" || operator === "||" || operator === "??" && node === right) {
return willPathCastToBoolean(parentPath);
}
}
if (parentPath.isSequenceExpression()) {
const {
expressions
} = parentPath.node;
if (expressions[expressions.length - 1] === node) {
return willPathCastToBoolean(parentPath);
} else {
return true;
}
}
return parentPath.isConditional({
test: node
}) || parentPath.isUnaryExpression({
operator: "!"
}) || parentPath.isLoop({
test: node
});
}
const {
LOGICAL_OPERATORS,
arrowFunctionExpression,
assignmentExpression,
binaryExpression,
booleanLiteral,
callExpression,
cloneNode,
conditionalExpression,
identifier,
isMemberExpression,
isOptionalCallExpression,
isOptionalMemberExpression,
isUpdateExpression,
logicalExpression,
memberExpression,
nullLiteral,
optionalCallExpression,
optionalMemberExpression,
sequenceExpression,
updateExpression
} = _t__namespace;
class AssignmentMemoiser {
constructor() {
this._map = void 0;
this._map = new WeakMap();
}
has(key) {
return this._map.has(key);
}
get(key) {
if (!this.has(key)) return;
const record = this._map.get(key);
const {
value
} = record;
record.count--;
if (record.count === 0) {
return assignmentExpression("=", value, key);
}
return value;
}
set(key, value, count) {
return this._map.set(key, {
count,
value
});
}
}
function toNonOptional(path, base) {
const {
node
} = path;
if (isOptionalMemberExpression(node)) {
return memberExpression(base, node.property, node.computed);
}
if (path.isOptionalCallExpression()) {
const callee = path.get("callee");
if (path.node.optional && callee.isOptionalMemberExpression()) {
const object = callee.node.object;
const context = path.scope.maybeGenerateMemoised(object);
callee.get("object").replaceWith(assignmentExpression("=", context, object));
return callExpression(memberExpression(base, identifier("call")), [context, ...path.node.arguments]);
}
return callExpression(base, path.node.arguments);
}
return path.node;
}
function isInDetachedTree(path) {
while (path) {
if (path.isProgram()) break;
const {
parentPath,
container,
listKey
} = path;
const parentNode = parentPath.node;
if (listKey) {
if (container !== parentNode[listKey]) {
return true;
}
} else {
if (container !== parentNode) return true;
}
path = parentPath;
}
return false;
}
const handle = {
memoise() {},
handle(member, noDocumentAll) {
const {
node,
parent,
parentPath,
scope
} = member;
if (member.isOptionalMemberExpression()) {
if (isInDetachedTree(member)) return;
const endPath = member.find(({
node,
parent
}) => {
if (isOptionalMemberExpression(parent)) {
return parent.optional || parent.object !== node;
}
if (isOptionalCallExpression(parent)) {
return node !== member.node && parent.optional || parent.callee !== node;
}
return true;
});
if (scope.path.isPattern()) {
endPath.replaceWith(callExpression(arrowFunctionExpression([], endPath.node), []));
return;
}
const willEndPathCastToBoolean = willPathCastToBoolean(endPath);
const rootParentPath = endPath.parentPath;
if (rootParentPath.isUpdateExpression({
argument: node
})) {
throw member.buildCodeFrameError(`can't handle update expression`);
}
const isAssignment = rootParentPath.isAssignmentExpression({
left: endPath.node
});
const isDeleteOperation = rootParentPath.isUnaryExpression({
operator: "delete"
});
if (isDeleteOperation && endPath.isOptionalMemberExpression() && endPath.get("property").isPrivateName()) {
throw member.buildCodeFrameError(`can't delete a private class element`);
}
let startingOptional = member;
for (;;) {
if (startingOptional.isOptionalMemberExpression()) {
if (startingOptional.node.optional) break;
startingOptional = startingOptional.get("object");
continue;
} else if (startingOptional.isOptionalCallExpression()) {
if (startingOptional.node.optional) break;
startingOptional = startingOptional.get("callee");
continue;
}
throw new Error(`Internal error: unexpected ${startingOptional.node.type}`);
}
const startingNode = startingOptional.isOptionalMemberExpression() ? startingOptional.node.object : startingOptional.node.callee;
const baseNeedsMemoised = scope.maybeGenerateMemoised(startingNode);
const baseRef = baseNeedsMemoised != null ? baseNeedsMemoised : startingNode;
const parentIsOptionalCall = parentPath.isOptionalCallExpression({
callee: node
});
const isOptionalCall = parent => parentIsOptionalCall;
const parentIsCall = parentPath.isCallExpression({
callee: node
});
startingOptional.replaceWith(toNonOptional(startingOptional, baseRef));
if (isOptionalCall()) {
if (parent.optional) {
parentPath.replaceWith(this.optionalCall(member, parent.arguments));
} else {
parentPath.replaceWith(this.call(member, parent.arguments));
}
} else if (parentIsCall) {
member.replaceWith(this.boundGet(member));
} else if (this.delete && parentPath.isUnaryExpression({
operator: "delete"
})) {
parentPath.replaceWith(this.delete(member));
} else if (parentPath.isAssignmentExpression()) {
handleAssignment(this, member, parentPath);
} else {
member.replaceWith(this.get(member));
}
let regular = member.node;
for (let current = member; current !== endPath;) {
const parentPath = current.parentPath;
if (parentPath === endPath && isOptionalCall() && parent.optional) {
regular = parentPath.node;
break;
}
regular = toNonOptional(parentPath, regular);
current = parentPath;
}
let context;
const endParentPath = endPath.parentPath;
if (isMemberExpression(regular) && endParentPath.isOptionalCallExpression({
callee: endPath.node,
optional: true
})) {
const {
object
} = regular;
context = member.scope.maybeGenerateMemoised(object);
if (context) {
regular.object = assignmentExpression("=", context, object);
}
}
let replacementPath = endPath;
if (isDeleteOperation || isAssignment) {
replacementPath = endParentPath;
regular = endParentPath.node;
}
const baseMemoised = baseNeedsMemoised ? assignmentExpression("=", cloneNode(baseRef), cloneNode(startingNode)) : cloneNode(baseRef);
if (willEndPathCastToBoolean) {
let nonNullishCheck;
if (noDocumentAll) {
nonNullishCheck = binaryExpression("!=", baseMemoised, nullLiteral());
} else {
nonNullishCheck = logicalExpression("&&", binaryExpression("!==", baseMemoised, nullLiteral()), binaryExpression("!==", cloneNode(baseRef), scope.buildUndefinedNode()));
}
replacementPath.replaceWith(logicalExpression("&&", nonNullishCheck, regular));
} else {
let nullishCheck;
if (noDocumentAll) {
nullishCheck = binaryExpression("==", baseMemoised, nullLiteral());
} else {
nullishCheck = logicalExpression("||", binaryExpression("===", baseMemoised, nullLiteral()), binaryExpression("===", cloneNode(baseRef), scope.buildUndefinedNode()));
}
replacementPath.replaceWith(conditionalExpression(nullishCheck, isDeleteOperation ? booleanLiteral(true) : scope.buildUndefinedNode(), regular));
}
if (context) {
const endParent = endParentPath.node;
endParentPath.replaceWith(optionalCallExpression(optionalMemberExpression(endParent.callee, identifier("call"), false, true), [cloneNode(context), ...endParent.arguments], false));
}
return;
}
if (isUpdateExpression(parent, {
argument: node
})) {
if (this.simpleSet) {
member.replaceWith(this.simpleSet(member));
return;
}
const {
operator,
prefix
} = parent;
this.memoise(member, 2);
const ref = scope.generateUidIdentifierBasedOnNode(node);
scope.push({
id: ref
});
const seq = [assignmentExpression("=", cloneNode(ref), this.get(member))];
if (prefix) {
seq.push(updateExpression(operator, cloneNode(ref), prefix));
const value = sequenceExpression(seq);
parentPath.replaceWith(this.set(member, value));
return;
} else {
const ref2 = scope.generateUidIdentifierBasedOnNode(node);
scope.push({
id: ref2
});
seq.push(assignmentExpression("=", cloneNode(ref2), updateExpression(operator, cloneNode(ref), prefix)), cloneNode(ref));
const value = sequenceExpression(seq);
parentPath.replaceWith(sequenceExpression([this.set(member, value), cloneNode(ref2)]));
return;
}
}
if (parentPath.isAssignmentExpression({
left: node
})) {
handleAssignment(this, member, parentPath);
return;
}
if (parentPath.isCallExpression({
callee: node
})) {
parentPath.replaceWith(this.call(member, parentPath.node.arguments));
return;
}
if (parentPath.isOptionalCallExpression({
callee: node
})) {
if (scope.path.isPattern()) {
parentPath.replaceWith(callExpression(arrowFunctionExpression([], parentPath.node), []));
return;
}
parentPath.replaceWith(this.optionalCall(member, parentPath.node.arguments));
return;
}
if (this.delete && parentPath.isUnaryExpression({
operator: "delete"
})) {
parentPath.replaceWith(this.delete(member));
return;
}
if (parentPath.isForXStatement({
left: node
}) || parentPath.isObjectProperty({
value: node
}) && parentPath.parentPath.isObjectPattern() || parentPath.isAssignmentPattern({
left: node
}) && parentPath.parentPath.isObjectProperty({
value: parent
}) && parentPath.parentPath.parentPath.isObjectPattern() || parentPath.isArrayPattern() || parentPath.isAssignmentPattern({
left: node
}) && parentPath.parentPath.isArrayPattern() || parentPath.isRestElement()) {
member.replaceWith(this.destructureSet(member));
return;
}
if (parentPath.isTaggedTemplateExpression()) {
member.replaceWith(this.boundGet(member));
} else {
member.replaceWith(this.get(member));
}
}
};
function handleAssignment(state, member, parentPath) {
if (state.simpleSet) {
member.replaceWith(state.simpleSet(member));
return;
}
const {
operator,
right: value
} = parentPath.node;
if (operator === "=") {
parentPath.replaceWith(state.set(member, value));
} else {
const operatorTrunc = operator.slice(0, -1);
if (LOGICAL_OPERATORS.includes(operatorTrunc)) {
state.memoise(member, 1);
parentPath.replaceWith(logicalExpression(operatorTrunc, state.get(member), state.set(member, value)));
} else {
state.memoise(member, 2);
parentPath.replaceWith(state.set(member, binaryExpression(operatorTrunc, state.get(member), value)));
}
}
}
function memberExpressionToFunctions(path, visitor, state) {
path.traverse(visitor, Object.assign({}, handle, state, {
memoiser: new AssignmentMemoiser()
}));
}
exports.default = memberExpressionToFunctions;
//# sourceMappingURL=index.js.map
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