/
nodeFactory.ts
6699 lines (6144 loc) · 315 KB
/
nodeFactory.ts
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namespace ts {
let nextAutoGenerateId = 0;
/* @internal */
export const enum NodeFactoryFlags {
None = 0,
// Disables the parenthesizer rules for the factory.
NoParenthesizerRules = 1 << 0,
// Disables the node converters for the factory.
NoNodeConverters = 1 << 1,
// Ensures new `PropertyAccessExpression` nodes are created with the `NoIndentation` emit flag set.
NoIndentationOnFreshPropertyAccess = 1 << 2,
// Do not set an `original` pointer when updating a node.
NoOriginalNode = 1 << 3,
}
/**
* Creates a `NodeFactory` that can be used to create and update a syntax tree.
* @param flags Flags that control factory behavior.
* @param baseFactory A `BaseNodeFactory` used to create the base `Node` objects.
*/
/* @internal */
export function createNodeFactory(flags: NodeFactoryFlags, baseFactory: BaseNodeFactory): NodeFactory {
const update = flags & NodeFactoryFlags.NoOriginalNode ? updateWithoutOriginal : updateWithOriginal;
// Lazily load the parenthesizer, node converters, and some factory methods until they are used.
const parenthesizerRules = memoize(() => flags & NodeFactoryFlags.NoParenthesizerRules ? nullParenthesizerRules : createParenthesizerRules(factory));
const converters = memoize(() => flags & NodeFactoryFlags.NoNodeConverters ? nullNodeConverters : createNodeConverters(factory));
// lazy initializaton of common operator factories
const getBinaryCreateFunction = memoizeOne((operator: BinaryOperator) => (left: Expression, right: Expression) => createBinaryExpression(left, operator, right));
const getPrefixUnaryCreateFunction = memoizeOne((operator: PrefixUnaryOperator) => (operand: Expression) => createPrefixUnaryExpression(operator, operand));
const getPostfixUnaryCreateFunction = memoizeOne((operator: PostfixUnaryOperator) => (operand: Expression) => createPostfixUnaryExpression(operand, operator));
const getJSDocPrimaryTypeCreateFunction = memoizeOne(<T extends JSDocType>(kind: T["kind"]) => () => createJSDocPrimaryTypeWorker(kind));
const getJSDocUnaryTypeCreateFunction = memoizeOne(<T extends JSDocType & { readonly type: TypeNode | undefined; }>(kind: T["kind"]) => (type: T["type"]) => createJSDocUnaryTypeWorker<T>(kind, type));
const getJSDocUnaryTypeUpdateFunction = memoizeOne(<T extends JSDocType & { readonly type: TypeNode | undefined; }>(kind: T["kind"]) => (node: T, type: T["type"]) => updateJSDocUnaryTypeWorker<T>(kind, node, type));
const getJSDocSimpleTagCreateFunction = memoizeOne(<T extends JSDocTag>(kind: T["kind"]) => (tagName: Identifier | undefined, comment?: NodeArray<JSDocComment>) => createJSDocSimpleTagWorker(kind, tagName, comment));
const getJSDocSimpleTagUpdateFunction = memoizeOne(<T extends JSDocTag>(kind: T["kind"]) => (node: T, tagName: Identifier | undefined, comment?: NodeArray<JSDocComment>) => updateJSDocSimpleTagWorker(kind, node, tagName, comment));
const getJSDocTypeLikeTagCreateFunction = memoizeOne(<T extends JSDocTag & { typeExpression?: JSDocTypeExpression }>(kind: T["kind"]) => (tagName: Identifier | undefined, typeExpression?: JSDocTypeExpression, comment?: NodeArray<JSDocComment>) => createJSDocTypeLikeTagWorker(kind, tagName, typeExpression, comment));
const getJSDocTypeLikeTagUpdateFunction = memoizeOne(<T extends JSDocTag & { typeExpression?: JSDocTypeExpression }>(kind: T["kind"]) => (node: T, tagName: Identifier | undefined, typeExpression?: JSDocTypeExpression, comment?: NodeArray<JSDocComment>) => updateJSDocTypeLikeTagWorker(kind, node, tagName, typeExpression, comment));
const factory: NodeFactory = {
get parenthesizer() { return parenthesizerRules(); },
get converters() { return converters(); },
createNodeArray,
createNumericLiteral,
createBigIntLiteral,
createStringLiteral,
createStringLiteralFromNode,
createRegularExpressionLiteral,
createLiteralLikeNode,
createIdentifier,
updateIdentifier,
createTempVariable,
createLoopVariable,
createUniqueName,
getGeneratedNameForNode,
createPrivateIdentifier,
createToken,
createSuper,
createThis,
createNull,
createTrue,
createFalse,
createModifier,
createModifiersFromModifierFlags,
createQualifiedName,
updateQualifiedName,
createComputedPropertyName,
updateComputedPropertyName,
createTypeParameterDeclaration,
updateTypeParameterDeclaration,
createParameterDeclaration,
updateParameterDeclaration,
createDecorator,
updateDecorator,
createPropertySignature,
updatePropertySignature,
createPropertyDeclaration,
updatePropertyDeclaration,
createMethodSignature,
updateMethodSignature,
createMethodDeclaration,
updateMethodDeclaration,
createConstructorDeclaration,
updateConstructorDeclaration,
createGetAccessorDeclaration,
updateGetAccessorDeclaration,
createSetAccessorDeclaration,
updateSetAccessorDeclaration,
createCallSignature,
updateCallSignature,
createConstructSignature,
updateConstructSignature,
createIndexSignature,
updateIndexSignature,
createClassStaticBlockDeclaration,
updateClassStaticBlockDeclaration,
createTemplateLiteralTypeSpan,
updateTemplateLiteralTypeSpan,
createKeywordTypeNode,
createTypePredicateNode,
updateTypePredicateNode,
createTypeReferenceNode,
updateTypeReferenceNode,
createFunctionTypeNode,
updateFunctionTypeNode,
createConstructorTypeNode,
updateConstructorTypeNode,
createTypeQueryNode,
updateTypeQueryNode,
createTypeLiteralNode,
updateTypeLiteralNode,
createArrayTypeNode,
updateArrayTypeNode,
createTupleTypeNode,
updateTupleTypeNode,
createNamedTupleMember,
updateNamedTupleMember,
createOptionalTypeNode,
updateOptionalTypeNode,
createRestTypeNode,
updateRestTypeNode,
createUnionTypeNode,
updateUnionTypeNode,
createIntersectionTypeNode,
updateIntersectionTypeNode,
createConditionalTypeNode,
updateConditionalTypeNode,
createInferTypeNode,
updateInferTypeNode,
createImportTypeNode,
updateImportTypeNode,
createParenthesizedType,
updateParenthesizedType,
createThisTypeNode,
createTypeOperatorNode,
updateTypeOperatorNode,
createIndexedAccessTypeNode,
updateIndexedAccessTypeNode,
createMappedTypeNode,
updateMappedTypeNode,
createLiteralTypeNode,
updateLiteralTypeNode,
createTemplateLiteralType,
updateTemplateLiteralType,
createObjectBindingPattern,
updateObjectBindingPattern,
createArrayBindingPattern,
updateArrayBindingPattern,
createBindingElement,
updateBindingElement,
createArrayLiteralExpression,
updateArrayLiteralExpression,
createObjectLiteralExpression,
updateObjectLiteralExpression,
createPropertyAccessExpression: flags & NodeFactoryFlags.NoIndentationOnFreshPropertyAccess ?
(expression, name) => setEmitFlags(createPropertyAccessExpression(expression, name), EmitFlags.NoIndentation) :
createPropertyAccessExpression,
updatePropertyAccessExpression,
createPropertyAccessChain: flags & NodeFactoryFlags.NoIndentationOnFreshPropertyAccess ?
(expression, questionDotToken, name) => setEmitFlags(createPropertyAccessChain(expression, questionDotToken, name), EmitFlags.NoIndentation) :
createPropertyAccessChain,
updatePropertyAccessChain,
createElementAccessExpression,
updateElementAccessExpression,
createElementAccessChain,
updateElementAccessChain,
createCallExpression,
updateCallExpression,
createCallChain,
updateCallChain,
createNewExpression,
updateNewExpression,
createTaggedTemplateExpression,
updateTaggedTemplateExpression,
createTypeAssertion,
updateTypeAssertion,
createParenthesizedExpression,
updateParenthesizedExpression,
createFunctionExpression,
updateFunctionExpression,
createArrowFunction,
updateArrowFunction,
createDeleteExpression,
updateDeleteExpression,
createTypeOfExpression,
updateTypeOfExpression,
createVoidExpression,
updateVoidExpression,
createAwaitExpression,
updateAwaitExpression,
createPrefixUnaryExpression,
updatePrefixUnaryExpression,
createPostfixUnaryExpression,
updatePostfixUnaryExpression,
createBinaryExpression,
updateBinaryExpression,
createConditionalExpression,
updateConditionalExpression,
createTemplateExpression,
updateTemplateExpression,
createTemplateHead,
createTemplateMiddle,
createTemplateTail,
createNoSubstitutionTemplateLiteral,
createTemplateLiteralLikeNode,
createYieldExpression,
updateYieldExpression,
createSpreadElement,
updateSpreadElement,
createClassExpression,
updateClassExpression,
createOmittedExpression,
createExpressionWithTypeArguments,
updateExpressionWithTypeArguments,
createAsExpression,
updateAsExpression,
createNonNullExpression,
updateNonNullExpression,
createSatisfiesExpression,
updateSatisfiesExpression,
createNonNullChain,
updateNonNullChain,
createMetaProperty,
updateMetaProperty,
createTemplateSpan,
updateTemplateSpan,
createSemicolonClassElement,
createBlock,
updateBlock,
createVariableStatement,
updateVariableStatement,
createEmptyStatement,
createExpressionStatement,
updateExpressionStatement,
createIfStatement,
updateIfStatement,
createDoStatement,
updateDoStatement,
createWhileStatement,
updateWhileStatement,
createForStatement,
updateForStatement,
createForInStatement,
updateForInStatement,
createForOfStatement,
updateForOfStatement,
createContinueStatement,
updateContinueStatement,
createBreakStatement,
updateBreakStatement,
createReturnStatement,
updateReturnStatement,
createWithStatement,
updateWithStatement,
createSwitchStatement,
updateSwitchStatement,
createLabeledStatement,
updateLabeledStatement,
createThrowStatement,
updateThrowStatement,
createTryStatement,
updateTryStatement,
createDebuggerStatement,
createVariableDeclaration,
updateVariableDeclaration,
createVariableDeclarationList,
updateVariableDeclarationList,
createFunctionDeclaration,
updateFunctionDeclaration,
createClassDeclaration,
updateClassDeclaration,
createInterfaceDeclaration,
updateInterfaceDeclaration,
createTypeAliasDeclaration,
updateTypeAliasDeclaration,
createEnumDeclaration,
updateEnumDeclaration,
createModuleDeclaration,
updateModuleDeclaration,
createModuleBlock,
updateModuleBlock,
createCaseBlock,
updateCaseBlock,
createNamespaceExportDeclaration,
updateNamespaceExportDeclaration,
createImportEqualsDeclaration,
updateImportEqualsDeclaration,
createImportDeclaration,
updateImportDeclaration,
createImportClause,
updateImportClause,
createAssertClause,
updateAssertClause,
createAssertEntry,
updateAssertEntry,
createNamespaceImport,
updateNamespaceImport,
createNamespaceExport,
updateNamespaceExport,
createNamedImports,
updateNamedImports,
createImportSpecifier,
updateImportSpecifier,
createExportAssignment,
updateExportAssignment,
createExportDeclaration,
updateExportDeclaration,
createNamedExports,
updateNamedExports,
createExportSpecifier,
updateExportSpecifier,
createMissingDeclaration,
createExternalModuleReference,
updateExternalModuleReference,
// lazily load factory members for JSDoc types with similar structure
get createJSDocAllType() { return getJSDocPrimaryTypeCreateFunction<JSDocAllType>(SyntaxKind.JSDocAllType); },
get createJSDocUnknownType() { return getJSDocPrimaryTypeCreateFunction<JSDocUnknownType>(SyntaxKind.JSDocUnknownType); },
get createJSDocNonNullableType() { return getJSDocUnaryTypeCreateFunction<JSDocNonNullableType>(SyntaxKind.JSDocNonNullableType); },
get updateJSDocNonNullableType() { return getJSDocUnaryTypeUpdateFunction<JSDocNonNullableType>(SyntaxKind.JSDocNonNullableType); },
get createJSDocNullableType() { return getJSDocUnaryTypeCreateFunction<JSDocNullableType>(SyntaxKind.JSDocNullableType); },
get updateJSDocNullableType() { return getJSDocUnaryTypeUpdateFunction<JSDocNullableType>(SyntaxKind.JSDocNullableType); },
get createJSDocOptionalType() { return getJSDocUnaryTypeCreateFunction<JSDocOptionalType>(SyntaxKind.JSDocOptionalType); },
get updateJSDocOptionalType() { return getJSDocUnaryTypeUpdateFunction<JSDocOptionalType>(SyntaxKind.JSDocOptionalType); },
get createJSDocVariadicType() { return getJSDocUnaryTypeCreateFunction<JSDocVariadicType>(SyntaxKind.JSDocVariadicType); },
get updateJSDocVariadicType() { return getJSDocUnaryTypeUpdateFunction<JSDocVariadicType>(SyntaxKind.JSDocVariadicType); },
get createJSDocNamepathType() { return getJSDocUnaryTypeCreateFunction<JSDocNamepathType>(SyntaxKind.JSDocNamepathType); },
get updateJSDocNamepathType() { return getJSDocUnaryTypeUpdateFunction<JSDocNamepathType>(SyntaxKind.JSDocNamepathType); },
createJSDocFunctionType,
updateJSDocFunctionType,
createJSDocTypeLiteral,
updateJSDocTypeLiteral,
createJSDocTypeExpression,
updateJSDocTypeExpression,
createJSDocSignature,
updateJSDocSignature,
createJSDocTemplateTag,
updateJSDocTemplateTag,
createJSDocTypedefTag,
updateJSDocTypedefTag,
createJSDocParameterTag,
updateJSDocParameterTag,
createJSDocPropertyTag,
updateJSDocPropertyTag,
createJSDocCallbackTag,
updateJSDocCallbackTag,
createJSDocAugmentsTag,
updateJSDocAugmentsTag,
createJSDocImplementsTag,
updateJSDocImplementsTag,
createJSDocSeeTag,
updateJSDocSeeTag,
createJSDocNameReference,
updateJSDocNameReference,
createJSDocMemberName,
updateJSDocMemberName,
createJSDocLink,
updateJSDocLink,
createJSDocLinkCode,
updateJSDocLinkCode,
createJSDocLinkPlain,
updateJSDocLinkPlain,
// lazily load factory members for JSDoc tags with similar structure
get createJSDocTypeTag() { return getJSDocTypeLikeTagCreateFunction<JSDocTypeTag>(SyntaxKind.JSDocTypeTag); },
get updateJSDocTypeTag() { return getJSDocTypeLikeTagUpdateFunction<JSDocTypeTag>(SyntaxKind.JSDocTypeTag); },
get createJSDocReturnTag() { return getJSDocTypeLikeTagCreateFunction<JSDocReturnTag>(SyntaxKind.JSDocReturnTag); },
get updateJSDocReturnTag() { return getJSDocTypeLikeTagUpdateFunction<JSDocReturnTag>(SyntaxKind.JSDocReturnTag); },
get createJSDocThisTag() { return getJSDocTypeLikeTagCreateFunction<JSDocThisTag>(SyntaxKind.JSDocThisTag); },
get updateJSDocThisTag() { return getJSDocTypeLikeTagUpdateFunction<JSDocThisTag>(SyntaxKind.JSDocThisTag); },
get createJSDocEnumTag() { return getJSDocTypeLikeTagCreateFunction<JSDocEnumTag>(SyntaxKind.JSDocEnumTag); },
get updateJSDocEnumTag() { return getJSDocTypeLikeTagUpdateFunction<JSDocEnumTag>(SyntaxKind.JSDocEnumTag); },
get createJSDocAuthorTag() { return getJSDocSimpleTagCreateFunction<JSDocAuthorTag>(SyntaxKind.JSDocAuthorTag); },
get updateJSDocAuthorTag() { return getJSDocSimpleTagUpdateFunction<JSDocAuthorTag>(SyntaxKind.JSDocAuthorTag); },
get createJSDocClassTag() { return getJSDocSimpleTagCreateFunction<JSDocClassTag>(SyntaxKind.JSDocClassTag); },
get updateJSDocClassTag() { return getJSDocSimpleTagUpdateFunction<JSDocClassTag>(SyntaxKind.JSDocClassTag); },
get createJSDocPublicTag() { return getJSDocSimpleTagCreateFunction<JSDocPublicTag>(SyntaxKind.JSDocPublicTag); },
get updateJSDocPublicTag() { return getJSDocSimpleTagUpdateFunction<JSDocPublicTag>(SyntaxKind.JSDocPublicTag); },
get createJSDocPrivateTag() { return getJSDocSimpleTagCreateFunction<JSDocPrivateTag>(SyntaxKind.JSDocPrivateTag); },
get updateJSDocPrivateTag() { return getJSDocSimpleTagUpdateFunction<JSDocPrivateTag>(SyntaxKind.JSDocPrivateTag); },
get createJSDocProtectedTag() { return getJSDocSimpleTagCreateFunction<JSDocProtectedTag>(SyntaxKind.JSDocProtectedTag); },
get updateJSDocProtectedTag() { return getJSDocSimpleTagUpdateFunction<JSDocProtectedTag>(SyntaxKind.JSDocProtectedTag); },
get createJSDocReadonlyTag() { return getJSDocSimpleTagCreateFunction<JSDocReadonlyTag>(SyntaxKind.JSDocReadonlyTag); },
get updateJSDocReadonlyTag() { return getJSDocSimpleTagUpdateFunction<JSDocReadonlyTag>(SyntaxKind.JSDocReadonlyTag); },
get createJSDocOverrideTag() { return getJSDocSimpleTagCreateFunction<JSDocOverrideTag>(SyntaxKind.JSDocOverrideTag); },
get updateJSDocOverrideTag() { return getJSDocSimpleTagUpdateFunction<JSDocOverrideTag>(SyntaxKind.JSDocOverrideTag); },
get createJSDocDeprecatedTag() { return getJSDocSimpleTagCreateFunction<JSDocDeprecatedTag>(SyntaxKind.JSDocDeprecatedTag); },
get updateJSDocDeprecatedTag() { return getJSDocSimpleTagUpdateFunction<JSDocDeprecatedTag>(SyntaxKind.JSDocDeprecatedTag); },
createJSDocUnknownTag,
updateJSDocUnknownTag,
createJSDocText,
updateJSDocText,
createJSDocComment,
updateJSDocComment,
createJsxElement,
updateJsxElement,
createJsxSelfClosingElement,
updateJsxSelfClosingElement,
createJsxOpeningElement,
updateJsxOpeningElement,
createJsxClosingElement,
updateJsxClosingElement,
createJsxFragment,
createJsxText,
updateJsxText,
createJsxOpeningFragment,
createJsxJsxClosingFragment,
updateJsxFragment,
createJsxAttribute,
updateJsxAttribute,
createJsxAttributes,
updateJsxAttributes,
createJsxSpreadAttribute,
updateJsxSpreadAttribute,
createJsxExpression,
updateJsxExpression,
createCaseClause,
updateCaseClause,
createDefaultClause,
updateDefaultClause,
createHeritageClause,
updateHeritageClause,
createCatchClause,
updateCatchClause,
createPropertyAssignment,
updatePropertyAssignment,
createShorthandPropertyAssignment,
updateShorthandPropertyAssignment,
createSpreadAssignment,
updateSpreadAssignment,
createEnumMember,
updateEnumMember,
createSourceFile,
updateSourceFile,
createBundle,
updateBundle,
createUnparsedSource,
createUnparsedPrologue,
createUnparsedPrepend,
createUnparsedTextLike,
createUnparsedSyntheticReference,
createInputFiles,
createSyntheticExpression,
createSyntaxList,
createNotEmittedStatement,
createPartiallyEmittedExpression,
updatePartiallyEmittedExpression,
createCommaListExpression,
updateCommaListExpression,
createEndOfDeclarationMarker,
createMergeDeclarationMarker,
createSyntheticReferenceExpression,
updateSyntheticReferenceExpression,
cloneNode,
// Lazily load factory methods for common operator factories and utilities
get createComma() { return getBinaryCreateFunction(SyntaxKind.CommaToken); },
get createAssignment() { return getBinaryCreateFunction(SyntaxKind.EqualsToken) as NodeFactory["createAssignment"]; },
get createLogicalOr() { return getBinaryCreateFunction(SyntaxKind.BarBarToken); },
get createLogicalAnd() { return getBinaryCreateFunction(SyntaxKind.AmpersandAmpersandToken); },
get createBitwiseOr() { return getBinaryCreateFunction(SyntaxKind.BarToken); },
get createBitwiseXor() { return getBinaryCreateFunction(SyntaxKind.CaretToken); },
get createBitwiseAnd() { return getBinaryCreateFunction(SyntaxKind.AmpersandToken); },
get createStrictEquality() { return getBinaryCreateFunction(SyntaxKind.EqualsEqualsEqualsToken); },
get createStrictInequality() { return getBinaryCreateFunction(SyntaxKind.ExclamationEqualsEqualsToken); },
get createEquality() { return getBinaryCreateFunction(SyntaxKind.EqualsEqualsToken); },
get createInequality() { return getBinaryCreateFunction(SyntaxKind.ExclamationEqualsToken); },
get createLessThan() { return getBinaryCreateFunction(SyntaxKind.LessThanToken); },
get createLessThanEquals() { return getBinaryCreateFunction(SyntaxKind.LessThanEqualsToken); },
get createGreaterThan() { return getBinaryCreateFunction(SyntaxKind.GreaterThanToken); },
get createGreaterThanEquals() { return getBinaryCreateFunction(SyntaxKind.GreaterThanEqualsToken); },
get createLeftShift() { return getBinaryCreateFunction(SyntaxKind.LessThanLessThanToken); },
get createRightShift() { return getBinaryCreateFunction(SyntaxKind.GreaterThanGreaterThanToken); },
get createUnsignedRightShift() { return getBinaryCreateFunction(SyntaxKind.GreaterThanGreaterThanGreaterThanToken); },
get createAdd() { return getBinaryCreateFunction(SyntaxKind.PlusToken); },
get createSubtract() { return getBinaryCreateFunction(SyntaxKind.MinusToken); },
get createMultiply() { return getBinaryCreateFunction(SyntaxKind.AsteriskToken); },
get createDivide() { return getBinaryCreateFunction(SyntaxKind.SlashToken); },
get createModulo() { return getBinaryCreateFunction(SyntaxKind.PercentToken); },
get createExponent() { return getBinaryCreateFunction(SyntaxKind.AsteriskAsteriskToken); },
get createPrefixPlus() { return getPrefixUnaryCreateFunction(SyntaxKind.PlusToken); },
get createPrefixMinus() { return getPrefixUnaryCreateFunction(SyntaxKind.MinusToken); },
get createPrefixIncrement() { return getPrefixUnaryCreateFunction(SyntaxKind.PlusPlusToken); },
get createPrefixDecrement() { return getPrefixUnaryCreateFunction(SyntaxKind.MinusMinusToken); },
get createBitwiseNot() { return getPrefixUnaryCreateFunction(SyntaxKind.TildeToken); },
get createLogicalNot() { return getPrefixUnaryCreateFunction(SyntaxKind.ExclamationToken); },
get createPostfixIncrement() { return getPostfixUnaryCreateFunction(SyntaxKind.PlusPlusToken); },
get createPostfixDecrement() { return getPostfixUnaryCreateFunction(SyntaxKind.MinusMinusToken); },
// Compound nodes
createImmediatelyInvokedFunctionExpression,
createImmediatelyInvokedArrowFunction,
createVoidZero,
createExportDefault,
createExternalModuleExport,
createTypeCheck,
createMethodCall,
createGlobalMethodCall,
createFunctionBindCall,
createFunctionCallCall,
createFunctionApplyCall,
createArraySliceCall,
createArrayConcatCall,
createObjectDefinePropertyCall,
createReflectGetCall,
createReflectSetCall,
createPropertyDescriptor,
createCallBinding,
createAssignmentTargetWrapper,
// Utilities
inlineExpressions,
getInternalName,
getLocalName,
getExportName,
getDeclarationName,
getNamespaceMemberName,
getExternalModuleOrNamespaceExportName,
restoreOuterExpressions,
restoreEnclosingLabel,
createUseStrictPrologue,
copyPrologue,
copyStandardPrologue,
copyCustomPrologue,
ensureUseStrict,
liftToBlock,
mergeLexicalEnvironment,
updateModifiers,
};
return factory;
// @api
function createNodeArray<T extends Node>(elements?: readonly T[], hasTrailingComma?: boolean): NodeArray<T> {
if (elements === undefined || elements === emptyArray) {
elements = [];
}
else if (isNodeArray(elements)) {
if (hasTrailingComma === undefined || elements.hasTrailingComma === hasTrailingComma) {
// Ensure the transform flags have been aggregated for this NodeArray
if (elements.transformFlags === undefined) {
aggregateChildrenFlags(elements as MutableNodeArray<T>);
}
Debug.attachNodeArrayDebugInfo(elements);
return elements;
}
// This *was* a `NodeArray`, but the `hasTrailingComma` option differs. Recreate the
// array with the same elements, text range, and transform flags but with the updated
// value for `hasTrailingComma`
const array = elements.slice() as MutableNodeArray<T>;
array.pos = elements.pos;
array.end = elements.end;
array.hasTrailingComma = hasTrailingComma;
array.transformFlags = elements.transformFlags;
Debug.attachNodeArrayDebugInfo(array);
return array;
}
// Since the element list of a node array is typically created by starting with an empty array and
// repeatedly calling push(), the list may not have the optimal memory layout. We invoke slice() for
// small arrays (1 to 4 elements) to give the VM a chance to allocate an optimal representation.
const length = elements.length;
const array = (length >= 1 && length <= 4 ? elements.slice() : elements) as MutableNodeArray<T>;
setTextRangePosEnd(array, -1, -1);
array.hasTrailingComma = !!hasTrailingComma;
aggregateChildrenFlags(array);
Debug.attachNodeArrayDebugInfo(array);
return array;
}
function createBaseNode<T extends Node>(kind: T["kind"]) {
return baseFactory.createBaseNode(kind) as Mutable<T>;
}
function createBaseDeclaration<T extends Declaration | VariableStatement | ImportDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined
) {
const node = createBaseNode(kind);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.transformFlags |=
propagateChildrenFlags(node.decorators) |
propagateChildrenFlags(node.modifiers);
// NOTE: The following properties are commonly set by the binder and are added here to
// ensure declarations have a stable shape.
node.symbol = undefined!; // initialized by binder
node.localSymbol = undefined; // initialized by binder
node.locals = undefined; // initialized by binder
node.nextContainer = undefined; // initialized by binder
return node;
}
function createBaseNamedDeclaration<T extends NamedDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: Identifier | PrivateIdentifier | StringLiteralLike | NumericLiteral | ComputedPropertyName | BindingPattern | string | undefined
) {
const node = createBaseDeclaration(
kind,
decorators,
modifiers
);
name = asName(name);
node.name = name;
// The PropertyName of a member is allowed to be `await`.
// We don't need to exclude `await` for type signatures since types
// don't propagate child flags.
if (name) {
switch (node.kind) {
case SyntaxKind.MethodDeclaration:
case SyntaxKind.GetAccessor:
case SyntaxKind.SetAccessor:
case SyntaxKind.PropertyDeclaration:
case SyntaxKind.PropertyAssignment:
if (isIdentifier(name)) {
node.transformFlags |= propagateIdentifierNameFlags(name);
break;
}
// fall through
default:
node.transformFlags |= propagateChildFlags(name);
break;
}
}
return node;
}
function createBaseGenericNamedDeclaration<T extends NamedDeclaration & { typeParameters?: NodeArray<TypeParameterDeclaration> }>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: Identifier | PrivateIdentifier | StringLiteralLike | NumericLiteral | ComputedPropertyName | BindingPattern | string | undefined,
typeParameters: readonly TypeParameterDeclaration[] | undefined
) {
const node = createBaseNamedDeclaration(
kind,
decorators,
modifiers,
name
);
node.typeParameters = asNodeArray(typeParameters);
node.transformFlags |= propagateChildrenFlags(node.typeParameters);
if (typeParameters) node.transformFlags |= TransformFlags.ContainsTypeScript;
return node;
}
function createBaseSignatureDeclaration<T extends SignatureDeclarationBase>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: Identifier | PrivateIdentifier | StringLiteralLike | NumericLiteral | ComputedPropertyName | BindingPattern | string | undefined,
typeParameters: readonly TypeParameterDeclaration[] | undefined,
parameters: readonly ParameterDeclaration[] | undefined,
type: TypeNode | undefined
) {
const node = createBaseGenericNamedDeclaration(
kind,
decorators,
modifiers,
name,
typeParameters
);
node.parameters = createNodeArray(parameters);
node.type = type;
node.transformFlags |=
propagateChildrenFlags(node.parameters) |
propagateChildFlags(node.type);
if (type) node.transformFlags |= TransformFlags.ContainsTypeScript;
return node;
}
function updateBaseSignatureDeclaration<T extends SignatureDeclarationBase>(updated: Mutable<T>, original: T) {
// copy children used only for error reporting
if (original.typeArguments) updated.typeArguments = original.typeArguments;
return update(updated, original);
}
function createBaseFunctionLikeDeclaration<T extends FunctionLikeDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: Identifier | PrivateIdentifier | StringLiteralLike | NumericLiteral | ComputedPropertyName | BindingPattern | string | undefined,
typeParameters: readonly TypeParameterDeclaration[] | undefined,
parameters: readonly ParameterDeclaration[] | undefined,
type: TypeNode | undefined,
body: T["body"]
) {
const node = createBaseSignatureDeclaration(
kind,
decorators,
modifiers,
name,
typeParameters,
parameters,
type
);
node.body = body;
node.transformFlags |= propagateChildFlags(node.body) & ~TransformFlags.ContainsPossibleTopLevelAwait;
if (!body) node.transformFlags |= TransformFlags.ContainsTypeScript;
return node;
}
function updateBaseFunctionLikeDeclaration<T extends FunctionLikeDeclaration>(updated: Mutable<T>, original: T) {
// copy children used only for error reporting
if (original.exclamationToken) updated.exclamationToken = original.exclamationToken;
if (original.typeArguments) updated.typeArguments = original.typeArguments;
return updateBaseSignatureDeclaration(updated, original);
}
function createBaseInterfaceOrClassLikeDeclaration<T extends InterfaceDeclaration | ClassLikeDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: string | Identifier | undefined,
typeParameters: readonly TypeParameterDeclaration[] | undefined,
heritageClauses: readonly HeritageClause[] | undefined
) {
const node = createBaseGenericNamedDeclaration(
kind,
decorators,
modifiers,
name,
typeParameters
);
node.heritageClauses = asNodeArray(heritageClauses);
node.transformFlags |= propagateChildrenFlags(node.heritageClauses);
return node;
}
function createBaseClassLikeDeclaration<T extends ClassLikeDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: string | Identifier | undefined,
typeParameters: readonly TypeParameterDeclaration[] | undefined,
heritageClauses: readonly HeritageClause[] | undefined,
members: readonly ClassElement[]
) {
const node = createBaseInterfaceOrClassLikeDeclaration(
kind,
decorators,
modifiers,
name,
typeParameters,
heritageClauses
);
node.members = createNodeArray(members);
node.transformFlags |= propagateChildrenFlags(node.members);
return node;
}
function createBaseBindingLikeDeclaration<T extends PropertyDeclaration | VariableDeclaration | ParameterDeclaration | BindingElement>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: string | T["name"] | undefined,
initializer: Expression | undefined
) {
const node = createBaseNamedDeclaration(
kind,
decorators,
modifiers,
name
);
node.initializer = initializer;
node.transformFlags |= propagateChildFlags(node.initializer);
return node;
}
function createBaseVariableLikeDeclaration<T extends PropertyDeclaration | VariableDeclaration | ParameterDeclaration>(
kind: T["kind"],
decorators: readonly Decorator[] | undefined,
modifiers: readonly Modifier[] | undefined,
name: string | T["name"] | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined
) {
const node = createBaseBindingLikeDeclaration(
kind,
decorators,
modifiers,
name,
initializer
);
node.type = type;
node.transformFlags |= propagateChildFlags(type);
if (type) node.transformFlags |= TransformFlags.ContainsTypeScript;
return node;
}
//
// Literals
//
function createBaseLiteral<T extends LiteralToken>(
kind: T["kind"],
text: string
) {
const node = createBaseToken(kind);
node.text = text;
return node;
}
// @api
function createNumericLiteral(value: string | number, numericLiteralFlags: TokenFlags = TokenFlags.None): NumericLiteral {
const node = createBaseLiteral<NumericLiteral>(SyntaxKind.NumericLiteral, typeof value === "number" ? value + "" : value);
node.numericLiteralFlags = numericLiteralFlags;
if (numericLiteralFlags & TokenFlags.BinaryOrOctalSpecifier) node.transformFlags |= TransformFlags.ContainsES2015;
return node;
}
// @api
function createBigIntLiteral(value: string | PseudoBigInt): BigIntLiteral {
const node = createBaseLiteral<BigIntLiteral>(SyntaxKind.BigIntLiteral, typeof value === "string" ? value : pseudoBigIntToString(value) + "n");
node.transformFlags |= TransformFlags.ContainsESNext;
return node;
}
function createBaseStringLiteral(text: string, isSingleQuote?: boolean) {
const node = createBaseLiteral<StringLiteral>(SyntaxKind.StringLiteral, text);
node.singleQuote = isSingleQuote;
return node;
}
// @api
function createStringLiteral(text: string, isSingleQuote?: boolean, hasExtendedUnicodeEscape?: boolean): StringLiteral {
const node = createBaseStringLiteral(text, isSingleQuote);
node.hasExtendedUnicodeEscape = hasExtendedUnicodeEscape;
if (hasExtendedUnicodeEscape) node.transformFlags |= TransformFlags.ContainsES2015;
return node;
}
// @api
function createStringLiteralFromNode(sourceNode: PropertyNameLiteral): StringLiteral {
const node = createBaseStringLiteral(getTextOfIdentifierOrLiteral(sourceNode), /*isSingleQuote*/ undefined);
node.textSourceNode = sourceNode;
return node;
}
// @api
function createRegularExpressionLiteral(text: string): RegularExpressionLiteral {
const node = createBaseLiteral<RegularExpressionLiteral>(SyntaxKind.RegularExpressionLiteral, text);
return node;
}
// @api
function createLiteralLikeNode(kind: LiteralToken["kind"] | SyntaxKind.JsxTextAllWhiteSpaces, text: string): LiteralToken {
switch (kind) {
case SyntaxKind.NumericLiteral: return createNumericLiteral(text, /*numericLiteralFlags*/ 0);
case SyntaxKind.BigIntLiteral: return createBigIntLiteral(text);
case SyntaxKind.StringLiteral: return createStringLiteral(text, /*isSingleQuote*/ undefined);
case SyntaxKind.JsxText: return createJsxText(text, /*containsOnlyTriviaWhiteSpaces*/ false);
case SyntaxKind.JsxTextAllWhiteSpaces: return createJsxText(text, /*containsOnlyTriviaWhiteSpaces*/ true);
case SyntaxKind.RegularExpressionLiteral: return createRegularExpressionLiteral(text);
case SyntaxKind.NoSubstitutionTemplateLiteral: return createTemplateLiteralLikeNode(kind, text, /*rawText*/ undefined, /*templateFlags*/ 0) as NoSubstitutionTemplateLiteral;
}
}
//
// Identifiers
//
function createBaseIdentifier(text: string, originalKeywordKind: SyntaxKind | undefined) {
if (originalKeywordKind === undefined && text) {
originalKeywordKind = stringToToken(text);
}
if (originalKeywordKind === SyntaxKind.Identifier) {
originalKeywordKind = undefined;
}
const node = baseFactory.createBaseIdentifierNode(SyntaxKind.Identifier) as Mutable<Identifier>;
node.originalKeywordKind = originalKeywordKind;
node.escapedText = escapeLeadingUnderscores(text);
return node;
}
function createBaseGeneratedIdentifier(text: string, autoGenerateFlags: GeneratedIdentifierFlags) {
const node = createBaseIdentifier(text, /*originalKeywordKind*/ undefined) as Mutable<GeneratedIdentifier>;
node.autoGenerateFlags = autoGenerateFlags;
node.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
return node;
}
// @api
function createIdentifier(text: string, typeArguments?: readonly (TypeNode | TypeParameterDeclaration)[], originalKeywordKind?: SyntaxKind): Identifier {
const node = createBaseIdentifier(text, originalKeywordKind);
if (typeArguments) {
// NOTE: we do not use `setChildren` here because typeArguments in an identifier do not contribute to transformations
node.typeArguments = createNodeArray(typeArguments);
}
if (node.originalKeywordKind === SyntaxKind.AwaitKeyword) {
node.transformFlags |= TransformFlags.ContainsPossibleTopLevelAwait;
}
return node;
}
// @api
function updateIdentifier(node: Identifier, typeArguments?: NodeArray<TypeNode | TypeParameterDeclaration> | undefined): Identifier {
return node.typeArguments !== typeArguments
? update(createIdentifier(idText(node), typeArguments), node)
: node;
}
// @api
function createTempVariable(recordTempVariable: ((node: Identifier) => void) | undefined, reservedInNestedScopes?: boolean): GeneratedIdentifier {
let flags = GeneratedIdentifierFlags.Auto;
if (reservedInNestedScopes) flags |= GeneratedIdentifierFlags.ReservedInNestedScopes;
const name = createBaseGeneratedIdentifier("", flags);
if (recordTempVariable) {
recordTempVariable(name);
}
return name;
}
/** Create a unique temporary variable for use in a loop. */
// @api
function createLoopVariable(reservedInNestedScopes?: boolean): Identifier {
let flags = GeneratedIdentifierFlags.Loop;
if (reservedInNestedScopes) flags |= GeneratedIdentifierFlags.ReservedInNestedScopes;
return createBaseGeneratedIdentifier("", flags);
}
/** Create a unique name based on the supplied text. */
// @api
function createUniqueName(text: string, flags: GeneratedIdentifierFlags = GeneratedIdentifierFlags.None): Identifier {
Debug.assert(!(flags & GeneratedIdentifierFlags.KindMask), "Argument out of range: flags");
Debug.assert((flags & (GeneratedIdentifierFlags.Optimistic | GeneratedIdentifierFlags.FileLevel)) !== GeneratedIdentifierFlags.FileLevel, "GeneratedIdentifierFlags.FileLevel cannot be set without also setting GeneratedIdentifierFlags.Optimistic");
return createBaseGeneratedIdentifier(text, GeneratedIdentifierFlags.Unique | flags);
}
/** Create a unique name generated for a node. */
// @api
function getGeneratedNameForNode(node: Node | undefined, flags: GeneratedIdentifierFlags = 0): Identifier {
Debug.assert(!(flags & GeneratedIdentifierFlags.KindMask), "Argument out of range: flags");
const name = createBaseGeneratedIdentifier(node && isIdentifier(node) ? idText(node) : "", GeneratedIdentifierFlags.Node | flags);
name.original = node;
return name;
}
// @api
function createPrivateIdentifier(text: string): PrivateIdentifier {
if (!startsWith(text, "#")) Debug.fail("First character of private identifier must be #: " + text);
const node = baseFactory.createBasePrivateIdentifierNode(SyntaxKind.PrivateIdentifier) as Mutable<PrivateIdentifier>;
node.escapedText = escapeLeadingUnderscores(text);
node.transformFlags |= TransformFlags.ContainsClassFields;
return node;
}
//
// Punctuation
//
function createBaseToken<T extends Node>(kind: T["kind"]) {
return baseFactory.createBaseTokenNode(kind) as Mutable<T>;
}
// @api
function createToken(token: SyntaxKind.SuperKeyword): SuperExpression;
function createToken(token: SyntaxKind.ThisKeyword): ThisExpression;
function createToken(token: SyntaxKind.NullKeyword): NullLiteral;
function createToken(token: SyntaxKind.TrueKeyword): TrueLiteral;
function createToken(token: SyntaxKind.FalseKeyword): FalseLiteral;
function createToken<TKind extends PunctuationSyntaxKind>(token: TKind): PunctuationToken<TKind>;
function createToken<TKind extends KeywordTypeSyntaxKind>(token: TKind): KeywordTypeNode<TKind>;
function createToken<TKind extends ModifierSyntaxKind>(token: TKind): ModifierToken<TKind>;
function createToken<TKind extends KeywordSyntaxKind>(token: TKind): KeywordToken<TKind>;
function createToken<TKind extends SyntaxKind.Unknown | SyntaxKind.EndOfFileToken>(token: TKind): Token<TKind>;
function createToken<TKind extends SyntaxKind>(token: TKind): Token<TKind>;
function createToken<TKind extends SyntaxKind>(token: TKind) {
Debug.assert(token >= SyntaxKind.FirstToken && token <= SyntaxKind.LastToken, "Invalid token");
Debug.assert(token <= SyntaxKind.FirstTemplateToken || token >= SyntaxKind.LastTemplateToken, "Invalid token. Use 'createTemplateLiteralLikeNode' to create template literals.");
Debug.assert(token <= SyntaxKind.FirstLiteralToken || token >= SyntaxKind.LastLiteralToken, "Invalid token. Use 'createLiteralLikeNode' to create literals.");
Debug.assert(token !== SyntaxKind.Identifier, "Invalid token. Use 'createIdentifier' to create identifiers");
const node = createBaseToken<Token<TKind>>(token);
let transformFlags = TransformFlags.None;
switch (token) {
case SyntaxKind.AsyncKeyword:
// 'async' modifier is ES2017 (async functions) or ES2018 (async generators)
transformFlags =
TransformFlags.ContainsES2017 |
TransformFlags.ContainsES2018;
break;
case SyntaxKind.PublicKeyword:
case SyntaxKind.PrivateKeyword:
case SyntaxKind.ProtectedKeyword:
case SyntaxKind.ReadonlyKeyword:
case SyntaxKind.AbstractKeyword:
case SyntaxKind.DeclareKeyword:
case SyntaxKind.ConstKeyword:
case SyntaxKind.AnyKeyword:
case SyntaxKind.NumberKeyword:
case SyntaxKind.BigIntKeyword:
case SyntaxKind.NeverKeyword:
case SyntaxKind.ObjectKeyword: