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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.skipAllButComputedKey = skipAllButComputedKey;
exports.default = exports.environmentVisitor = void 0;
var _traverse = require("@babel/traverse");
var _helperMemberExpressionToFunctions = require("@babel/helper-member-expression-to-functions");
var _helperOptimiseCallExpression = require("@babel/helper-optimise-call-expression");
var t = require("@babel/types");
function getPrototypeOfExpression(objectRef, isStatic, file, isPrivateMethod) {
objectRef = t.cloneNode(objectRef);
const targetRef = isStatic || isPrivateMethod ? objectRef : t.memberExpression(objectRef, t.identifier("prototype"));
return t.callExpression(file.addHelper("getPrototypeOf"), [targetRef]);
}
function skipAllButComputedKey(path) {
if (!path.node.computed) {
path.skip();
return;
}
const keys = t.VISITOR_KEYS[path.type];
for (const key of keys) {
if (key !== "key") path.skipKey(key);
}
}
const environmentVisitor = {
[`${t.staticBlock ? "StaticBlock|" : ""}ClassPrivateProperty|TypeAnnotation`](path) {
path.skip();
},
Function(path) {
if (path.isMethod()) return;
if (path.isArrowFunctionExpression()) return;
path.skip();
},
"Method|ClassProperty"(path) {
skipAllButComputedKey(path);
}
};
exports.environmentVisitor = environmentVisitor;
const visitor = _traverse.default.visitors.merge([environmentVisitor, {
Super(path, state) {
const {
node,
parentPath
} = path;
if (!parentPath.isMemberExpression({
object: node
})) return;
state.handle(parentPath);
}
}]);
const unshadowSuperBindingVisitor = _traverse.default.visitors.merge([environmentVisitor, {
Scopable(path, {
refName
}) {
const binding = path.scope.getOwnBinding(refName);
if (binding && binding.identifier.name === refName) {
path.scope.rename(refName);
}
}
}]);
const specHandlers = {
memoise(superMember, count) {
const {
scope,
node
} = superMember;
const {
computed,
property
} = node;
if (!computed) {
return;
}
const memo = scope.maybeGenerateMemoised(property);
if (!memo) {
return;
}
this.memoiser.set(property, memo, count);
},
prop(superMember) {
const {
computed,
property
} = superMember.node;
if (this.memoiser.has(property)) {
return t.cloneNode(this.memoiser.get(property));
}
if (computed) {
return t.cloneNode(property);
}
return t.stringLiteral(property.name);
},
get(superMember) {
return this._get(superMember, this._getThisRefs());
},
_get(superMember, thisRefs) {
const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
return t.callExpression(this.file.addHelper("get"), [thisRefs.memo ? t.sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), thisRefs.this]);
},
_getThisRefs() {
if (!this.isDerivedConstructor) {
return {
this: t.thisExpression()
};
}
const thisRef = this.scope.generateDeclaredUidIdentifier("thisSuper");
return {
memo: t.assignmentExpression("=", thisRef, t.thisExpression()),
this: t.cloneNode(thisRef)
};
},
set(superMember, value) {
const thisRefs = this._getThisRefs();
const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
return t.callExpression(this.file.addHelper("set"), [thisRefs.memo ? t.sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), value, thisRefs.this, t.booleanLiteral(superMember.isInStrictMode())]);
},
destructureSet(superMember) {
throw superMember.buildCodeFrameError(`Destructuring to a super field is not supported yet.`);
},
call(superMember, args) {
const thisRefs = this._getThisRefs();
return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), t.cloneNode(thisRefs.this), args, false);
},
optionalCall(superMember, args) {
const thisRefs = this._getThisRefs();
return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), t.cloneNode(thisRefs.this), args, true);
}
};
const looseHandlers = Object.assign({}, specHandlers, {
prop(superMember) {
const {
property
} = superMember.node;
if (this.memoiser.has(property)) {
return t.cloneNode(this.memoiser.get(property));
}
return t.cloneNode(property);
},
get(superMember) {
const {
isStatic,
getSuperRef
} = this;
const {
computed
} = superMember.node;
const prop = this.prop(superMember);
let object;
if (isStatic) {
var _getSuperRef;
object = (_getSuperRef = getSuperRef()) != null ? _getSuperRef : t.memberExpression(t.identifier("Function"), t.identifier("prototype"));
} else {
var _getSuperRef2;
object = t.memberExpression((_getSuperRef2 = getSuperRef()) != null ? _getSuperRef2 : t.identifier("Object"), t.identifier("prototype"));
}
return t.memberExpression(object, prop, computed);
},
set(superMember, value) {
const {
computed
} = superMember.node;
const prop = this.prop(superMember);
return t.assignmentExpression("=", t.memberExpression(t.thisExpression(), prop, computed), value);
},
destructureSet(superMember) {
const {
computed
} = superMember.node;
const prop = this.prop(superMember);
return t.memberExpression(t.thisExpression(), prop, computed);
},
call(superMember, args) {
return (0, _helperOptimiseCallExpression.default)(this.get(superMember), t.thisExpression(), args, false);
},
optionalCall(superMember, args) {
return (0, _helperOptimiseCallExpression.default)(this.get(superMember), t.thisExpression(), args, true);
}
});
class ReplaceSupers {
constructor(opts) {
var _opts$constantSuper;
const path = opts.methodPath;
this.methodPath = path;
this.isDerivedConstructor = path.isClassMethod({
kind: "constructor"
}) && !!opts.superRef;
this.isStatic = path.isObjectMethod() || path.node.static || (path.isStaticBlock == null ? void 0 : path.isStaticBlock());
this.isPrivateMethod = path.isPrivate() && path.isMethod();
this.file = opts.file;
this.constantSuper = (_opts$constantSuper = opts.constantSuper) != null ? _opts$constantSuper : opts.isLoose;
this.opts = opts;
}
getObjectRef() {
return t.cloneNode(this.opts.objectRef || this.opts.getObjectRef());
}
getSuperRef() {
if (this.opts.superRef) return t.cloneNode(this.opts.superRef);
if (this.opts.getSuperRef) return t.cloneNode(this.opts.getSuperRef());
}
replace() {
if (this.opts.refToPreserve) {
this.methodPath.traverse(unshadowSuperBindingVisitor, {
refName: this.opts.refToPreserve.name
});
}
const handler = this.constantSuper ? looseHandlers : specHandlers;
(0, _helperMemberExpressionToFunctions.default)(this.methodPath, visitor, Object.assign({
file: this.file,
scope: this.methodPath.scope,
isDerivedConstructor: this.isDerivedConstructor,
isStatic: this.isStatic,
isPrivateMethod: this.isPrivateMethod,
getObjectRef: this.getObjectRef.bind(this),
getSuperRef: this.getSuperRef.bind(this)
}, handler));
}
}
exports.default = ReplaceSupers;