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keksAccountGUI/node_modulesOLD/@babel/plugin-transform-classes/lib/transformClass.js
2019-08-11 20:48:02 +02:00

602 lines
No EOL
18 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = transformClass;
function _helperFunctionName() {
const data = _interopRequireDefault(require("@babel/helper-function-name"));
_helperFunctionName = function () {
return data;
};
return data;
}
function _helperReplaceSupers() {
const data = _interopRequireWildcard(require("@babel/helper-replace-supers"));
_helperReplaceSupers = function () {
return data;
};
return data;
}
function _helperOptimiseCallExpression() {
const data = _interopRequireDefault(require("@babel/helper-optimise-call-expression"));
_helperOptimiseCallExpression = function () {
return data;
};
return data;
}
function defineMap() {
const data = _interopRequireWildcard(require("@babel/helper-define-map"));
defineMap = function () {
return data;
};
return data;
}
function _core() {
const data = require("@babel/core");
_core = function () {
return data;
};
return data;
}
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function buildConstructor(classRef, constructorBody, node) {
const func = _core().types.functionDeclaration(_core().types.cloneNode(classRef), [], constructorBody);
_core().types.inherits(func, node);
return func;
}
function transformClass(path, file, builtinClasses, isLoose) {
const classState = {
parent: undefined,
scope: undefined,
node: undefined,
path: undefined,
file: undefined,
classId: undefined,
classRef: undefined,
superName: undefined,
superReturns: [],
isDerived: false,
extendsNative: false,
construct: undefined,
constructorBody: undefined,
userConstructor: undefined,
userConstructorPath: undefined,
hasConstructor: false,
instancePropBody: [],
instancePropRefs: {},
staticPropBody: [],
body: [],
superThises: [],
pushedConstructor: false,
pushedInherits: false,
protoAlias: null,
isLoose: false,
hasInstanceDescriptors: false,
hasStaticDescriptors: false,
instanceMutatorMap: {},
staticMutatorMap: {}
};
const setState = newState => {
Object.assign(classState, newState);
};
const findThisesVisitor = _core().traverse.visitors.merge([_helperReplaceSupers().environmentVisitor, {
ThisExpression(path) {
classState.superThises.push(path);
}
}]);
function pushToMap(node, enumerable, kind = "value", scope) {
let mutatorMap;
if (node.static) {
setState({
hasStaticDescriptors: true
});
mutatorMap = classState.staticMutatorMap;
} else {
setState({
hasInstanceDescriptors: true
});
mutatorMap = classState.instanceMutatorMap;
}
const map = defineMap().push(mutatorMap, node, kind, classState.file, scope);
if (enumerable) {
map.enumerable = _core().types.booleanLiteral(true);
}
return map;
}
function maybeCreateConstructor() {
let hasConstructor = false;
const paths = classState.path.get("body.body");
for (const path of paths) {
hasConstructor = path.equals("kind", "constructor");
if (hasConstructor) break;
}
if (hasConstructor) return;
let params, body;
if (classState.isDerived) {
const constructor = _core().template.expression.ast`
(function () {
super(...arguments);
})
`;
params = constructor.params;
body = constructor.body;
} else {
params = [];
body = _core().types.blockStatement([]);
}
classState.path.get("body").unshiftContainer("body", _core().types.classMethod("constructor", _core().types.identifier("constructor"), params, body));
}
function buildBody() {
maybeCreateConstructor();
pushBody();
verifyConstructor();
if (classState.userConstructor) {
const {
constructorBody,
userConstructor,
construct
} = classState;
constructorBody.body = constructorBody.body.concat(userConstructor.body.body);
_core().types.inherits(construct, userConstructor);
_core().types.inherits(constructorBody, userConstructor.body);
}
pushDescriptors();
}
function pushBody() {
const classBodyPaths = classState.path.get("body.body");
for (const path of classBodyPaths) {
const node = path.node;
if (path.isClassProperty()) {
throw path.buildCodeFrameError("Missing class properties transform.");
}
if (node.decorators) {
throw path.buildCodeFrameError("Method has decorators, put the decorator plugin before the classes one.");
}
if (_core().types.isClassMethod(node)) {
const isConstructor = node.kind === "constructor";
const replaceSupers = new (_helperReplaceSupers().default)({
methodPath: path,
objectRef: classState.classRef,
superRef: classState.superName,
isLoose: classState.isLoose,
file: classState.file
});
replaceSupers.replace();
const superReturns = [];
path.traverse(_core().traverse.visitors.merge([_helperReplaceSupers().environmentVisitor, {
ReturnStatement(path) {
if (!path.getFunctionParent().isArrowFunctionExpression()) {
superReturns.push(path);
}
}
}]));
if (isConstructor) {
pushConstructor(superReturns, node, path);
} else {
pushMethod(node, path);
}
}
}
}
function clearDescriptors() {
setState({
hasInstanceDescriptors: false,
hasStaticDescriptors: false,
instanceMutatorMap: {},
staticMutatorMap: {}
});
}
function pushDescriptors() {
pushInheritsToBody();
const {
body
} = classState;
let instanceProps;
let staticProps;
if (classState.hasInstanceDescriptors) {
instanceProps = defineMap().toClassObject(classState.instanceMutatorMap);
}
if (classState.hasStaticDescriptors) {
staticProps = defineMap().toClassObject(classState.staticMutatorMap);
}
if (instanceProps || staticProps) {
if (instanceProps) {
instanceProps = defineMap().toComputedObjectFromClass(instanceProps);
}
if (staticProps) {
staticProps = defineMap().toComputedObjectFromClass(staticProps);
}
let args = [_core().types.cloneNode(classState.classRef), _core().types.nullLiteral(), _core().types.nullLiteral()];
if (instanceProps) args[1] = instanceProps;
if (staticProps) args[2] = staticProps;
let lastNonNullIndex = 0;
for (let i = 0; i < args.length; i++) {
if (!_core().types.isNullLiteral(args[i])) lastNonNullIndex = i;
}
args = args.slice(0, lastNonNullIndex + 1);
body.push(_core().types.expressionStatement(_core().types.callExpression(classState.file.addHelper("createClass"), args)));
}
clearDescriptors();
}
function wrapSuperCall(bareSuper, superRef, thisRef, body) {
let bareSuperNode = bareSuper.node;
let call;
if (classState.isLoose) {
bareSuperNode.arguments.unshift(_core().types.thisExpression());
if (bareSuperNode.arguments.length === 2 && _core().types.isSpreadElement(bareSuperNode.arguments[1]) && _core().types.isIdentifier(bareSuperNode.arguments[1].argument, {
name: "arguments"
})) {
bareSuperNode.arguments[1] = bareSuperNode.arguments[1].argument;
bareSuperNode.callee = _core().types.memberExpression(_core().types.cloneNode(superRef), _core().types.identifier("apply"));
} else {
bareSuperNode.callee = _core().types.memberExpression(_core().types.cloneNode(superRef), _core().types.identifier("call"));
}
call = _core().types.logicalExpression("||", bareSuperNode, _core().types.thisExpression());
} else {
bareSuperNode = (0, _helperOptimiseCallExpression().default)(_core().types.callExpression(classState.file.addHelper("getPrototypeOf"), [_core().types.cloneNode(classState.classRef)]), _core().types.thisExpression(), bareSuperNode.arguments);
call = _core().types.callExpression(classState.file.addHelper("possibleConstructorReturn"), [_core().types.thisExpression(), bareSuperNode]);
}
if (bareSuper.parentPath.isExpressionStatement() && bareSuper.parentPath.container === body.node.body && body.node.body.length - 1 === bareSuper.parentPath.key) {
if (classState.superThises.length) {
call = _core().types.assignmentExpression("=", thisRef(), call);
}
bareSuper.parentPath.replaceWith(_core().types.returnStatement(call));
} else {
bareSuper.replaceWith(_core().types.assignmentExpression("=", thisRef(), call));
}
}
function verifyConstructor() {
if (!classState.isDerived) return;
const path = classState.userConstructorPath;
const body = path.get("body");
path.traverse(findThisesVisitor);
let thisRef = function () {
const ref = path.scope.generateDeclaredUidIdentifier("this");
thisRef = () => _core().types.cloneNode(ref);
return ref;
};
for (const thisPath of classState.superThises) {
const {
node,
parentPath
} = thisPath;
if (parentPath.isMemberExpression({
object: node
})) {
thisPath.replaceWith(thisRef());
continue;
}
thisPath.replaceWith(_core().types.callExpression(classState.file.addHelper("assertThisInitialized"), [thisRef()]));
}
const bareSupers = new Set();
path.traverse(_core().traverse.visitors.merge([_helperReplaceSupers().environmentVisitor, {
Super(path) {
const {
node,
parentPath
} = path;
if (parentPath.isCallExpression({
callee: node
})) {
bareSupers.add(parentPath);
}
}
}]));
let guaranteedSuperBeforeFinish = !!bareSupers.size;
for (const bareSuper of bareSupers) {
wrapSuperCall(bareSuper, classState.superName, thisRef, body);
if (guaranteedSuperBeforeFinish) {
bareSuper.find(function (parentPath) {
if (parentPath === path) {
return true;
}
if (parentPath.isLoop() || parentPath.isConditional() || parentPath.isArrowFunctionExpression()) {
guaranteedSuperBeforeFinish = false;
return true;
}
});
}
}
let wrapReturn;
if (classState.isLoose) {
wrapReturn = returnArg => {
const thisExpr = _core().types.callExpression(classState.file.addHelper("assertThisInitialized"), [thisRef()]);
return returnArg ? _core().types.logicalExpression("||", returnArg, thisExpr) : thisExpr;
};
} else {
wrapReturn = returnArg => _core().types.callExpression(classState.file.addHelper("possibleConstructorReturn"), [thisRef()].concat(returnArg || []));
}
const bodyPaths = body.get("body");
if (!bodyPaths.length || !bodyPaths.pop().isReturnStatement()) {
body.pushContainer("body", _core().types.returnStatement(guaranteedSuperBeforeFinish ? thisRef() : wrapReturn()));
}
for (const returnPath of classState.superReturns) {
returnPath.get("argument").replaceWith(wrapReturn(returnPath.node.argument));
}
}
function pushMethod(node, path) {
const scope = path ? path.scope : classState.scope;
if (node.kind === "method") {
if (processMethod(node, scope)) return;
}
pushToMap(node, false, null, scope);
}
function processMethod(node, scope) {
if (classState.isLoose && !node.decorators) {
let {
classRef
} = classState;
if (!node.static) {
insertProtoAliasOnce();
classRef = classState.protoAlias;
}
const methodName = _core().types.memberExpression(_core().types.cloneNode(classRef), node.key, node.computed || _core().types.isLiteral(node.key));
let func = _core().types.functionExpression(null, node.params, node.body, node.generator, node.async);
_core().types.inherits(func, node);
const key = _core().types.toComputedKey(node, node.key);
if (_core().types.isStringLiteral(key)) {
func = (0, _helperFunctionName().default)({
node: func,
id: key,
scope
});
}
const expr = _core().types.expressionStatement(_core().types.assignmentExpression("=", methodName, func));
_core().types.inheritsComments(expr, node);
classState.body.push(expr);
return true;
}
return false;
}
function insertProtoAliasOnce() {
if (classState.protoAlias === null) {
setState({
protoAlias: classState.scope.generateUidIdentifier("proto")
});
const classProto = _core().types.memberExpression(classState.classRef, _core().types.identifier("prototype"));
const protoDeclaration = _core().types.variableDeclaration("var", [_core().types.variableDeclarator(classState.protoAlias, classProto)]);
classState.body.push(protoDeclaration);
}
}
function pushConstructor(superReturns, method, path) {
if (path.scope.hasOwnBinding(classState.classRef.name)) {
path.scope.rename(classState.classRef.name);
}
setState({
userConstructorPath: path,
userConstructor: method,
hasConstructor: true,
superReturns
});
const {
construct
} = classState;
_core().types.inheritsComments(construct, method);
construct.params = method.params;
_core().types.inherits(construct.body, method.body);
construct.body.directives = method.body.directives;
pushConstructorToBody();
}
function pushConstructorToBody() {
if (classState.pushedConstructor) return;
classState.pushedConstructor = true;
if (classState.hasInstanceDescriptors || classState.hasStaticDescriptors) {
pushDescriptors();
}
classState.body.push(classState.construct);
pushInheritsToBody();
}
function pushInheritsToBody() {
if (!classState.isDerived || classState.pushedInherits) return;
setState({
pushedInherits: true
});
classState.body.unshift(_core().types.expressionStatement(_core().types.callExpression(classState.file.addHelper(classState.isLoose ? "inheritsLoose" : "inherits"), [_core().types.cloneNode(classState.classRef), _core().types.cloneNode(classState.superName)])));
}
function setupClosureParamsArgs() {
const {
superName
} = classState;
const closureParams = [];
const closureArgs = [];
if (classState.isDerived) {
const arg = classState.extendsNative ? _core().types.callExpression(classState.file.addHelper("wrapNativeSuper"), [_core().types.cloneNode(superName)]) : _core().types.cloneNode(superName);
const param = classState.scope.generateUidIdentifierBasedOnNode(superName);
closureParams.push(param);
closureArgs.push(arg);
setState({
superName: _core().types.cloneNode(param)
});
}
return {
closureParams,
closureArgs
};
}
function classTransformer(path, file, builtinClasses, isLoose) {
setState({
parent: path.parent,
scope: path.scope,
node: path.node,
path,
file,
isLoose
});
setState({
classId: classState.node.id,
classRef: classState.node.id ? _core().types.identifier(classState.node.id.name) : classState.scope.generateUidIdentifier("class"),
superName: classState.node.superClass,
isDerived: !!classState.node.superClass,
constructorBody: _core().types.blockStatement([])
});
setState({
extendsNative: classState.isDerived && builtinClasses.has(classState.superName.name) && !classState.scope.hasBinding(classState.superName.name, true)
});
const {
classRef,
node,
constructorBody
} = classState;
setState({
construct: buildConstructor(classRef, constructorBody, node)
});
let {
body
} = classState;
const {
closureParams,
closureArgs
} = setupClosureParamsArgs();
buildBody();
if (!classState.isLoose) {
constructorBody.body.unshift(_core().types.expressionStatement(_core().types.callExpression(classState.file.addHelper("classCallCheck"), [_core().types.thisExpression(), _core().types.cloneNode(classState.classRef)])));
}
body = body.concat(classState.staticPropBody.map(fn => fn(_core().types.cloneNode(classState.classRef))));
const isStrict = path.isInStrictMode();
let constructorOnly = classState.classId && body.length === 1;
if (constructorOnly && !isStrict) {
for (const param of classState.construct.params) {
if (!_core().types.isIdentifier(param)) {
constructorOnly = false;
break;
}
}
}
const directives = constructorOnly ? body[0].body.directives : [];
if (!isStrict) {
directives.push(_core().types.directive(_core().types.directiveLiteral("use strict")));
}
if (constructorOnly) {
return _core().types.toExpression(body[0]);
}
body.push(_core().types.returnStatement(_core().types.cloneNode(classState.classRef)));
const container = _core().types.arrowFunctionExpression(closureParams, _core().types.blockStatement(body, directives));
return _core().types.callExpression(container, closureArgs);
}
return classTransformer(path, file, builtinClasses, isLoose);
}