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							240 lines
						
					
					
						
							7.7 KiB
						
					
					
				
			
		
		
	
	
							240 lines
						
					
					
						
							7.7 KiB
						
					
					
				"use strict";
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Object.defineProperty(exports, "__esModule", {
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  value: true
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});
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exports.default = void 0;
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Object.defineProperty(exports, "environmentVisitor", {
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  enumerable: true,
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  get: function () {
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    return _helperEnvironmentVisitor.default;
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  }
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});
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Object.defineProperty(exports, "skipAllButComputedKey", {
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  enumerable: true,
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  get: function () {
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    return _helperEnvironmentVisitor.skipAllButComputedKey;
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  }
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});
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var _helperEnvironmentVisitor = require("@babel/helper-environment-visitor");
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var _helperMemberExpressionToFunctions = require("@babel/helper-member-expression-to-functions");
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var _helperOptimiseCallExpression = require("@babel/helper-optimise-call-expression");
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var _template = require("@babel/template");
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var _traverse = require("@babel/traverse");
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var _t = require("@babel/types");
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const {
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  assignmentExpression,
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  booleanLiteral,
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  callExpression,
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  cloneNode,
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  identifier,
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  memberExpression,
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  sequenceExpression,
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  stringLiteral,
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  thisExpression
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} = _t;
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function getPrototypeOfExpression(objectRef, isStatic, file, isPrivateMethod) {
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  objectRef = cloneNode(objectRef);
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  const targetRef = isStatic || isPrivateMethod ? objectRef : memberExpression(objectRef, identifier("prototype"));
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  return callExpression(file.addHelper("getPrototypeOf"), [targetRef]);
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}
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const visitor = _traverse.default.visitors.merge([_helperEnvironmentVisitor.default, {
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  Super(path, state) {
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    const {
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      node,
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      parentPath
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    } = path;
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    if (!parentPath.isMemberExpression({
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      object: node
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    })) return;
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    state.handle(parentPath);
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  }
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}]);
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const unshadowSuperBindingVisitor = _traverse.default.visitors.merge([_helperEnvironmentVisitor.default, {
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  Scopable(path, {
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    refName
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  }) {
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    const binding = path.scope.getOwnBinding(refName);
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    if (binding && binding.identifier.name === refName) {
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      path.scope.rename(refName);
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    }
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  }
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}]);
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const specHandlers = {
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  memoise(superMember, count) {
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    const {
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      scope,
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      node
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    } = superMember;
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    const {
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      computed,
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      property
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    } = node;
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    if (!computed) {
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      return;
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    }
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    const memo = scope.maybeGenerateMemoised(property);
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    if (!memo) {
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      return;
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    }
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    this.memoiser.set(property, memo, count);
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  },
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  prop(superMember) {
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    const {
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      computed,
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      property
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    } = superMember.node;
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    if (this.memoiser.has(property)) {
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      return cloneNode(this.memoiser.get(property));
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    }
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    if (computed) {
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      return cloneNode(property);
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    }
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    return stringLiteral(property.name);
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  },
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  get(superMember) {
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    return this._get(superMember, this._getThisRefs());
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  },
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  _get(superMember, thisRefs) {
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    const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
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    return callExpression(this.file.addHelper("get"), [
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    thisRefs.memo ? sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), thisRefs.this]);
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  },
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  _getThisRefs() {
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    if (!this.isDerivedConstructor) {
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      return {
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        this: thisExpression()
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      };
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    }
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    const thisRef = this.scope.generateDeclaredUidIdentifier("thisSuper");
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    return {
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      memo: assignmentExpression("=", thisRef, thisExpression()),
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      this: cloneNode(thisRef)
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    };
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  },
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  set(superMember, value) {
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    const thisRefs = this._getThisRefs();
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    const proto = getPrototypeOfExpression(this.getObjectRef(), this.isStatic, this.file, this.isPrivateMethod);
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    return callExpression(this.file.addHelper("set"), [
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    thisRefs.memo ? sequenceExpression([thisRefs.memo, proto]) : proto, this.prop(superMember), value, thisRefs.this, booleanLiteral(superMember.isInStrictMode())]);
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  },
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  destructureSet(superMember) {
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    throw superMember.buildCodeFrameError(`Destructuring to a super field is not supported yet.`);
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  },
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  call(superMember, args) {
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    const thisRefs = this._getThisRefs();
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    return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), cloneNode(thisRefs.this), args, false);
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  },
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  optionalCall(superMember, args) {
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    const thisRefs = this._getThisRefs();
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    return (0, _helperOptimiseCallExpression.default)(this._get(superMember, thisRefs), cloneNode(thisRefs.this), args, true);
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  },
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  delete(superMember) {
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    if (superMember.node.computed) {
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      return sequenceExpression([callExpression(this.file.addHelper("toPropertyKey"), [cloneNode(superMember.node.property)]), _template.default.expression.ast`
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          function () { throw new ReferenceError("'delete super[expr]' is invalid"); }()
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        `]);
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    } else {
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      return _template.default.expression.ast`
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        function () { throw new ReferenceError("'delete super.prop' is invalid"); }()
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      `;
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    }
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  }
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};
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const looseHandlers = Object.assign({}, specHandlers, {
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  prop(superMember) {
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    const {
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      property
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    } = superMember.node;
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    if (this.memoiser.has(property)) {
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      return cloneNode(this.memoiser.get(property));
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    }
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    return cloneNode(property);
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  },
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  get(superMember) {
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    const {
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      isStatic,
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      getSuperRef
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    } = this;
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    const {
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      computed
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    } = superMember.node;
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    const prop = this.prop(superMember);
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    let object;
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    if (isStatic) {
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      var _getSuperRef;
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      object = (_getSuperRef = getSuperRef()) != null ? _getSuperRef : memberExpression(identifier("Function"), identifier("prototype"));
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    } else {
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      var _getSuperRef2;
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      object = memberExpression((_getSuperRef2 = getSuperRef()) != null ? _getSuperRef2 : identifier("Object"), identifier("prototype"));
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    }
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    return memberExpression(object, prop, computed);
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  },
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  set(superMember, value) {
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    const {
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      computed
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    } = superMember.node;
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    const prop = this.prop(superMember);
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    return assignmentExpression("=", memberExpression(thisExpression(), prop, computed), value);
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  },
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  destructureSet(superMember) {
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    const {
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      computed
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    } = superMember.node;
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    const prop = this.prop(superMember);
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    return memberExpression(thisExpression(), prop, computed);
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  },
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  call(superMember, args) {
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    return (0, _helperOptimiseCallExpression.default)(this.get(superMember), thisExpression(), args, false);
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  },
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  optionalCall(superMember, args) {
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    return (0, _helperOptimiseCallExpression.default)(this.get(superMember), thisExpression(), args, true);
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  }
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});
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class ReplaceSupers {
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  constructor(opts) {
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    var _opts$constantSuper;
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    const path = opts.methodPath;
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    this.methodPath = path;
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    this.isDerivedConstructor = path.isClassMethod({
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      kind: "constructor"
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    }) && !!opts.superRef;
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    this.isStatic = path.isObjectMethod() ||
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    path.node.static || (path.isStaticBlock == null ? void 0 : path.isStaticBlock());
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    this.isPrivateMethod = path.isPrivate() && path.isMethod();
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    this.file = opts.file;
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    this.constantSuper = (_opts$constantSuper = opts.constantSuper) != null ? _opts$constantSuper : opts.isLoose;
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    this.opts = opts;
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  }
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  getObjectRef() {
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    return cloneNode(this.opts.objectRef || this.opts.getObjectRef());
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  }
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  getSuperRef() {
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    if (this.opts.superRef) return cloneNode(this.opts.superRef);
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    if (this.opts.getSuperRef) {
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      return cloneNode(this.opts.getSuperRef());
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    }
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  }
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  replace() {
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    if (this.opts.refToPreserve) {
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      this.methodPath.traverse(unshadowSuperBindingVisitor, {
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        refName: this.opts.refToPreserve.name
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      });
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    }
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    const handler = this.constantSuper ? looseHandlers : specHandlers;
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    (0, _helperMemberExpressionToFunctions.default)(this.methodPath, visitor, Object.assign({
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      file: this.file,
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      scope: this.methodPath.scope,
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      isDerivedConstructor: this.isDerivedConstructor,
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      isStatic: this.isStatic,
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      isPrivateMethod: this.isPrivateMethod,
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      getObjectRef: this.getObjectRef.bind(this),
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      getSuperRef: this.getSuperRef.bind(this),
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      boundGet: handler.get
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    }, handler));
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  }
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}
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exports.default = ReplaceSupers;
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//# sourceMappingURL=index.js.map
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