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factory.ts
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namespace ts {
function createSynthesizedNode(kind: SyntaxKind): Node {
const node = createNode(kind, -1, -1);
node.flags |= NodeFlags.Synthesized;
return node;
}
/* @internal */
export function updateNode<T extends Node>(updated: T, original: T): T {
if (updated !== original) {
setOriginalNode(updated, original);
setTextRange(updated, original);
aggregateTransformFlags(updated);
}
return updated;
}
/* @internal */ export function createNodeArray<T extends Node>(elements?: T[], hasTrailingComma?: boolean): MutableNodeArray<T>;
export function createNodeArray<T extends Node>(elements?: ReadonlyArray<T>, hasTrailingComma?: boolean): NodeArray<T>;
/**
* Make `elements` into a `NodeArray<T>`. If `elements` is `undefined`, returns an empty `NodeArray<T>`.
*/
export function createNodeArray<T extends Node>(elements?: ReadonlyArray<T>, hasTrailingComma?: boolean): NodeArray<T> {
if (!elements || elements === emptyArray) {
elements = [];
}
else if (isNodeArray(elements)) {
return elements;
}
const array = <NodeArray<T>>elements;
array.pos = -1;
array.end = -1;
array.hasTrailingComma = hasTrailingComma;
return array;
}
/**
* Creates a shallow, memberwise clone of a node with no source map location.
*/
/* @internal */
export function getSynthesizedClone<T extends Node>(node: T): T {
// We don't use "clone" from core.ts here, as we need to preserve the prototype chain of
// the original node. We also need to exclude specific properties and only include own-
// properties (to skip members already defined on the shared prototype).
if (node === undefined) {
return node;
}
const clone = <T>createSynthesizedNode(node.kind);
clone.flags |= node.flags;
setOriginalNode(clone, node);
for (const key in node) {
if (clone.hasOwnProperty(key) || !node.hasOwnProperty(key)) {
continue;
}
(<any>clone)[key] = (<any>node)[key];
}
return clone;
}
// Literals
/* @internal */ export function createLiteral(value: string | StringLiteral | NoSubstitutionTemplateLiteral | NumericLiteral | Identifier, isSingleQuote: boolean): StringLiteral; // tslint:disable-line unified-signatures
/** If a node is passed, creates a string literal whose source text is read from a source node during emit. */
export function createLiteral(value: string | StringLiteral | NoSubstitutionTemplateLiteral | NumericLiteral | Identifier): StringLiteral;
export function createLiteral(value: number): NumericLiteral;
export function createLiteral(value: boolean): BooleanLiteral;
export function createLiteral(value: string | number | boolean): PrimaryExpression;
export function createLiteral(value: string | number | boolean | StringLiteral | NoSubstitutionTemplateLiteral | NumericLiteral | Identifier, isSingleQuote?: boolean): PrimaryExpression {
if (typeof value === "number") {
return createNumericLiteral(value + "");
}
if (typeof value === "boolean") {
return value ? createTrue() : createFalse();
}
if (isString(value)) {
const res = createStringLiteral(value);
if (isSingleQuote) res.singleQuote = true;
return res;
}
return createLiteralFromNode(value);
}
export function createNumericLiteral(value: string): NumericLiteral {
const node = <NumericLiteral>createSynthesizedNode(SyntaxKind.NumericLiteral);
node.text = value;
node.numericLiteralFlags = 0;
return node;
}
export function createStringLiteral(text: string): StringLiteral {
const node = <StringLiteral>createSynthesizedNode(SyntaxKind.StringLiteral);
node.text = text;
return node;
}
export function createRegularExpressionLiteral(text: string): RegularExpressionLiteral {
const node = <RegularExpressionLiteral>createSynthesizedNode(SyntaxKind.RegularExpressionLiteral);
node.text = text;
return node;
}
function createLiteralFromNode(sourceNode: PropertyNameLiteral): StringLiteral {
const node = createStringLiteral(getTextOfIdentifierOrLiteral(sourceNode));
node.textSourceNode = sourceNode;
return node;
}
// Identifiers
export function createIdentifier(text: string): Identifier;
/* @internal */
export function createIdentifier(text: string, typeArguments: ReadonlyArray<TypeNode | TypeParameterDeclaration> | undefined): Identifier; // tslint:disable-line unified-signatures
export function createIdentifier(text: string, typeArguments?: ReadonlyArray<TypeNode | TypeParameterDeclaration>): Identifier {
const node = <Identifier>createSynthesizedNode(SyntaxKind.Identifier);
node.escapedText = escapeLeadingUnderscores(text);
node.originalKeywordKind = text ? stringToToken(text) : SyntaxKind.Unknown;
node.autoGenerateFlags = GeneratedIdentifierFlags.None;
node.autoGenerateId = 0;
if (typeArguments) {
node.typeArguments = createNodeArray(typeArguments as ReadonlyArray<TypeNode>);
}
return node;
}
export function updateIdentifier(node: Identifier): Identifier;
/* @internal */
export function updateIdentifier(node: Identifier, typeArguments: NodeArray<TypeNode | TypeParameterDeclaration> | undefined): Identifier; // tslint:disable-line unified-signatures
export function updateIdentifier(node: Identifier, typeArguments?: NodeArray<TypeNode | TypeParameterDeclaration> | undefined): Identifier {
return node.typeArguments !== typeArguments
? updateNode(createIdentifier(idText(node), typeArguments), node)
: node;
}
let nextAutoGenerateId = 0;
/** Create a unique temporary variable. */
export function createTempVariable(recordTempVariable: ((node: Identifier) => void) | undefined): Identifier;
/* @internal */ export function createTempVariable(recordTempVariable: ((node: Identifier) => void) | undefined, reservedInNestedScopes: boolean): GeneratedIdentifier; // tslint:disable-line unified-signatures
export function createTempVariable(recordTempVariable: ((node: Identifier) => void) | undefined, reservedInNestedScopes?: boolean): GeneratedIdentifier {
const name = createIdentifier("") as GeneratedIdentifier;
name.autoGenerateFlags = GeneratedIdentifierFlags.Auto;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
if (recordTempVariable) {
recordTempVariable(name);
}
if (reservedInNestedScopes) {
name.autoGenerateFlags |= GeneratedIdentifierFlags.ReservedInNestedScopes;
}
return name;
}
/** Create a unique temporary variable for use in a loop. */
export function createLoopVariable(): Identifier {
const name = createIdentifier("");
name.autoGenerateFlags = GeneratedIdentifierFlags.Loop;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
return name;
}
/** Create a unique name based on the supplied text. */
export function createUniqueName(text: string): Identifier {
const name = createIdentifier(text);
name.autoGenerateFlags = GeneratedIdentifierFlags.Unique;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
return name;
}
/* @internal */ export function createOptimisticUniqueName(text: string): GeneratedIdentifier;
/** Create a unique name based on the supplied text. */
export function createOptimisticUniqueName(text: string): Identifier;
export function createOptimisticUniqueName(text: string): GeneratedIdentifier {
const name = createIdentifier(text) as GeneratedIdentifier;
name.autoGenerateFlags = GeneratedIdentifierFlags.Unique | GeneratedIdentifierFlags.Optimistic;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
return name;
}
/** Create a unique name based on the supplied text. This does not consider names injected by the transformer. */
export function createFileLevelUniqueName(text: string): Identifier {
const name = createOptimisticUniqueName(text);
name.autoGenerateFlags |= GeneratedIdentifierFlags.FileLevel;
return name;
}
/** Create a unique name generated for a node. */
export function getGeneratedNameForNode(node: Node | undefined): Identifier;
/* @internal */ export function getGeneratedNameForNode(node: Node | undefined, flags: GeneratedIdentifierFlags): Identifier; // tslint:disable-line unified-signatures
export function getGeneratedNameForNode(node: Node | undefined, flags?: GeneratedIdentifierFlags): Identifier {
const name = createIdentifier(node && isIdentifier(node) ? idText(node) : "");
name.autoGenerateFlags = GeneratedIdentifierFlags.Node | flags!;
name.autoGenerateId = nextAutoGenerateId;
name.original = node;
nextAutoGenerateId++;
return name;
}
// Punctuation
export function createToken<TKind extends SyntaxKind>(token: TKind) {
return <Token<TKind>>createSynthesizedNode(token);
}
// Reserved words
export function createSuper() {
return <SuperExpression>createSynthesizedNode(SyntaxKind.SuperKeyword);
}
export function createThis() {
return <ThisExpression & Token<SyntaxKind.ThisKeyword>>createSynthesizedNode(SyntaxKind.ThisKeyword);
}
export function createNull() {
return <NullLiteral & Token<SyntaxKind.NullKeyword>>createSynthesizedNode(SyntaxKind.NullKeyword);
}
export function createTrue() {
return <BooleanLiteral & Token<SyntaxKind.TrueKeyword>>createSynthesizedNode(SyntaxKind.TrueKeyword);
}
export function createFalse() {
return <BooleanLiteral & Token<SyntaxKind.FalseKeyword>>createSynthesizedNode(SyntaxKind.FalseKeyword);
}
// Modifiers
export function createModifier<T extends Modifier["kind"]>(kind: T) {
return createToken(kind);
}
export function createModifiersFromModifierFlags(flags: ModifierFlags) {
const result: Modifier[] = [];
if (flags & ModifierFlags.Export) { result.push(createModifier(SyntaxKind.ExportKeyword)); }
if (flags & ModifierFlags.Ambient) { result.push(createModifier(SyntaxKind.DeclareKeyword)); }
if (flags & ModifierFlags.Default) { result.push(createModifier(SyntaxKind.DefaultKeyword)); }
if (flags & ModifierFlags.Const) { result.push(createModifier(SyntaxKind.ConstKeyword)); }
if (flags & ModifierFlags.Public) { result.push(createModifier(SyntaxKind.PublicKeyword)); }
if (flags & ModifierFlags.Private) { result.push(createModifier(SyntaxKind.PrivateKeyword)); }
if (flags & ModifierFlags.Protected) { result.push(createModifier(SyntaxKind.ProtectedKeyword)); }
if (flags & ModifierFlags.Abstract) { result.push(createModifier(SyntaxKind.AbstractKeyword)); }
if (flags & ModifierFlags.Static) { result.push(createModifier(SyntaxKind.StaticKeyword)); }
if (flags & ModifierFlags.Readonly) { result.push(createModifier(SyntaxKind.ReadonlyKeyword)); }
if (flags & ModifierFlags.Async) { result.push(createModifier(SyntaxKind.AsyncKeyword)); }
return result;
}
// Names
export function createQualifiedName(left: EntityName, right: string | Identifier) {
const node = <QualifiedName>createSynthesizedNode(SyntaxKind.QualifiedName);
node.left = left;
node.right = asName(right);
return node;
}
export function updateQualifiedName(node: QualifiedName, left: EntityName, right: Identifier) {
return node.left !== left
|| node.right !== right
? updateNode(createQualifiedName(left, right), node)
: node;
}
function parenthesizeForComputedName(expression: Expression): Expression {
return (isBinaryExpression(expression) && expression.operatorToken.kind === SyntaxKind.CommaToken) ||
expression.kind === SyntaxKind.CommaListExpression ?
createParen(expression) :
expression;
}
export function createComputedPropertyName(expression: Expression) {
const node = <ComputedPropertyName>createSynthesizedNode(SyntaxKind.ComputedPropertyName);
node.expression = parenthesizeForComputedName(expression);
return node;
}
export function updateComputedPropertyName(node: ComputedPropertyName, expression: Expression) {
return node.expression !== expression
? updateNode(createComputedPropertyName(expression), node)
: node;
}
// Signature elements
export function createTypeParameterDeclaration(name: string | Identifier, constraint?: TypeNode, defaultType?: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.TypeParameter) as TypeParameterDeclaration;
node.name = asName(name);
node.constraint = constraint;
node.default = defaultType;
return node;
}
export function updateTypeParameterDeclaration(node: TypeParameterDeclaration, name: Identifier, constraint: TypeNode | undefined, defaultType: TypeNode | undefined) {
return node.name !== name
|| node.constraint !== constraint
|| node.default !== defaultType
? updateNode(createTypeParameterDeclaration(name, constraint, defaultType), node)
: node;
}
export function createParameter(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
dotDotDotToken: DotDotDotToken | undefined,
name: string | BindingName,
questionToken?: QuestionToken,
type?: TypeNode,
initializer?: Expression) {
const node = <ParameterDeclaration>createSynthesizedNode(SyntaxKind.Parameter);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.dotDotDotToken = dotDotDotToken;
node.name = asName(name);
node.questionToken = questionToken;
node.type = type;
node.initializer = initializer ? parenthesizeExpressionForList(initializer) : undefined;
return node;
}
export function updateParameter(
node: ParameterDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
dotDotDotToken: DotDotDotToken | undefined,
name: string | BindingName,
questionToken: QuestionToken | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.dotDotDotToken !== dotDotDotToken
|| node.name !== name
|| node.questionToken !== questionToken
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createParameter(decorators, modifiers, dotDotDotToken, name, questionToken, type, initializer), node)
: node;
}
export function createDecorator(expression: Expression) {
const node = <Decorator>createSynthesizedNode(SyntaxKind.Decorator);
node.expression = parenthesizeForAccess(expression);
return node;
}
export function updateDecorator(node: Decorator, expression: Expression) {
return node.expression !== expression
? updateNode(createDecorator(expression), node)
: node;
}
// Type Elements
export function createPropertySignature(
modifiers: ReadonlyArray<Modifier> | undefined,
name: PropertyName | string,
questionToken: QuestionToken | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined): PropertySignature {
const node = createSynthesizedNode(SyntaxKind.PropertySignature) as PropertySignature;
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.questionToken = questionToken;
node.type = type;
node.initializer = initializer;
return node;
}
export function updatePropertySignature(
node: PropertySignature,
modifiers: ReadonlyArray<Modifier> | undefined,
name: PropertyName,
questionToken: QuestionToken | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined) {
return node.modifiers !== modifiers
|| node.name !== name
|| node.questionToken !== questionToken
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createPropertySignature(modifiers, name, questionToken, type, initializer), node)
: node;
}
export function createProperty(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: string | PropertyName,
questionOrExclamationToken: QuestionToken | ExclamationToken | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined) {
const node = <PropertyDeclaration>createSynthesizedNode(SyntaxKind.PropertyDeclaration);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.questionToken = questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === SyntaxKind.QuestionToken ? questionOrExclamationToken : undefined;
node.exclamationToken = questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === SyntaxKind.ExclamationToken ? questionOrExclamationToken : undefined;
node.type = type;
node.initializer = initializer;
return node;
}
export function updateProperty(
node: PropertyDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: string | PropertyName,
questionOrExclamationToken: QuestionToken | ExclamationToken | undefined,
type: TypeNode | undefined,
initializer: Expression | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.name !== name
|| node.questionToken !== (questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === SyntaxKind.QuestionToken ? questionOrExclamationToken : undefined)
|| node.exclamationToken !== (questionOrExclamationToken !== undefined && questionOrExclamationToken.kind === SyntaxKind.ExclamationToken ? questionOrExclamationToken : undefined)
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createProperty(decorators, modifiers, name, questionOrExclamationToken, type, initializer), node)
: node;
}
export function createMethodSignature(
typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode | undefined,
name: string | PropertyName,
questionToken: QuestionToken | undefined) {
const node = createSignatureDeclaration(SyntaxKind.MethodSignature, typeParameters, parameters, type) as MethodSignature;
node.name = asName(name);
node.questionToken = questionToken;
return node;
}
export function updateMethodSignature(node: MethodSignature, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined, name: PropertyName, questionToken: QuestionToken | undefined) {
return node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
|| node.name !== name
|| node.questionToken !== questionToken
? updateNode(createMethodSignature(typeParameters, parameters, type, name, questionToken), node)
: node;
}
export function createMethod(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
asteriskToken: AsteriskToken | undefined,
name: string | PropertyName,
questionToken: QuestionToken | undefined,
typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode | undefined,
body: Block | undefined) {
const node = <MethodDeclaration>createSynthesizedNode(SyntaxKind.MethodDeclaration);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.asteriskToken = asteriskToken;
node.name = asName(name);
node.questionToken = questionToken;
node.typeParameters = asNodeArray(typeParameters);
node.parameters = createNodeArray(parameters);
node.type = type;
node.body = body;
return node;
}
export function updateMethod(
node: MethodDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
asteriskToken: AsteriskToken | undefined,
name: PropertyName,
questionToken: QuestionToken | undefined,
typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode | undefined,
body: Block | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.asteriskToken !== asteriskToken
|| node.name !== name
|| node.questionToken !== questionToken
|| node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
|| node.body !== body
? updateNode(createMethod(decorators, modifiers, asteriskToken, name, questionToken, typeParameters, parameters, type, body), node)
: node;
}
export function createConstructor(decorators: ReadonlyArray<Decorator> | undefined, modifiers: ReadonlyArray<Modifier> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, body: Block | undefined) {
const node = <ConstructorDeclaration>createSynthesizedNode(SyntaxKind.Constructor);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = undefined;
node.body = body;
return node;
}
export function updateConstructor(
node: ConstructorDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
body: Block | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.parameters !== parameters
|| node.body !== body
? updateNode(createConstructor(decorators, modifiers, parameters, body), node)
: node;
}
export function createGetAccessor(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: string | PropertyName,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode | undefined,
body: Block | undefined) {
const node = <GetAccessorDeclaration>createSynthesizedNode(SyntaxKind.GetAccessor);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = type;
node.body = body;
return node;
}
export function updateGetAccessor(
node: GetAccessorDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: PropertyName,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode | undefined,
body: Block | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.name !== name
|| node.parameters !== parameters
|| node.type !== type
|| node.body !== body
? updateNode(createGetAccessor(decorators, modifiers, name, parameters, type, body), node)
: node;
}
export function createSetAccessor(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: string | PropertyName,
parameters: ReadonlyArray<ParameterDeclaration>,
body: Block | undefined) {
const node = <SetAccessorDeclaration>createSynthesizedNode(SyntaxKind.SetAccessor);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.body = body;
return node;
}
export function updateSetAccessor(
node: SetAccessorDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
name: PropertyName,
parameters: ReadonlyArray<ParameterDeclaration>,
body: Block | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.name !== name
|| node.parameters !== parameters
|| node.body !== body
? updateNode(createSetAccessor(decorators, modifiers, name, parameters, body), node)
: node;
}
export function createCallSignature(typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, type: TypeNode | undefined) {
return createSignatureDeclaration(SyntaxKind.CallSignature, typeParameters, parameters, type) as CallSignatureDeclaration;
}
export function updateCallSignature(node: CallSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined) {
return updateSignatureDeclaration(node, typeParameters, parameters, type);
}
export function createConstructSignature(typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, type: TypeNode | undefined) {
return createSignatureDeclaration(SyntaxKind.ConstructSignature, typeParameters, parameters, type) as ConstructSignatureDeclaration;
}
export function updateConstructSignature(node: ConstructSignatureDeclaration, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined) {
return updateSignatureDeclaration(node, typeParameters, parameters, type);
}
export function createIndexSignature(
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode): IndexSignatureDeclaration {
const node = createSynthesizedNode(SyntaxKind.IndexSignature) as IndexSignatureDeclaration;
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.parameters = createNodeArray(parameters);
node.type = type;
return node;
}
export function updateIndexSignature(
node: IndexSignatureDeclaration,
decorators: ReadonlyArray<Decorator> | undefined,
modifiers: ReadonlyArray<Modifier> | undefined,
parameters: ReadonlyArray<ParameterDeclaration>,
type: TypeNode) {
return node.parameters !== parameters
|| node.type !== type
|| node.decorators !== decorators
|| node.modifiers !== modifiers
? updateNode(createIndexSignature(decorators, modifiers, parameters, type), node)
: node;
}
/* @internal */
export function createSignatureDeclaration(kind: SyntaxKind, typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, type: TypeNode | undefined, typeArguments?: ReadonlyArray<TypeNode> | undefined) {
const node = createSynthesizedNode(kind) as SignatureDeclaration;
node.typeParameters = asNodeArray(typeParameters);
node.parameters = asNodeArray(parameters);
node.type = type;
node.typeArguments = asNodeArray(typeArguments);
return node;
}
function updateSignatureDeclaration<T extends SignatureDeclaration>(node: T, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined): T {
return node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
? updateNode(<T>createSignatureDeclaration(node.kind, typeParameters, parameters, type), node)
: node;
}
// Types
export function createKeywordTypeNode(kind: KeywordTypeNode["kind"]) {
return <KeywordTypeNode>createSynthesizedNode(kind);
}
export function createTypePredicateNode(parameterName: Identifier | ThisTypeNode | string, type: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.TypePredicate) as TypePredicateNode;
node.parameterName = asName(parameterName);
node.type = type;
return node;
}
export function updateTypePredicateNode(node: TypePredicateNode, parameterName: Identifier | ThisTypeNode, type: TypeNode) {
return node.parameterName !== parameterName
|| node.type !== type
? updateNode(createTypePredicateNode(parameterName, type), node)
: node;
}
export function createTypeReferenceNode(typeName: string | EntityName, typeArguments: ReadonlyArray<TypeNode> | undefined) {
const node = createSynthesizedNode(SyntaxKind.TypeReference) as TypeReferenceNode;
node.typeName = asName(typeName);
node.typeArguments = typeArguments && parenthesizeTypeParameters(typeArguments);
return node;
}
export function updateTypeReferenceNode(node: TypeReferenceNode, typeName: EntityName, typeArguments: NodeArray<TypeNode> | undefined) {
return node.typeName !== typeName
|| node.typeArguments !== typeArguments
? updateNode(createTypeReferenceNode(typeName, typeArguments), node)
: node;
}
export function createFunctionTypeNode(typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, type: TypeNode | undefined) {
return createSignatureDeclaration(SyntaxKind.FunctionType, typeParameters, parameters, type) as FunctionTypeNode;
}
export function updateFunctionTypeNode(node: FunctionTypeNode, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined) {
return updateSignatureDeclaration(node, typeParameters, parameters, type);
}
export function createConstructorTypeNode(typeParameters: ReadonlyArray<TypeParameterDeclaration> | undefined, parameters: ReadonlyArray<ParameterDeclaration>, type: TypeNode | undefined) {
return createSignatureDeclaration(SyntaxKind.ConstructorType, typeParameters, parameters, type) as ConstructorTypeNode;
}
export function updateConstructorTypeNode(node: ConstructorTypeNode, typeParameters: NodeArray<TypeParameterDeclaration> | undefined, parameters: NodeArray<ParameterDeclaration>, type: TypeNode | undefined) {
return updateSignatureDeclaration(node, typeParameters, parameters, type);
}
export function createTypeQueryNode(exprName: EntityName) {
const node = createSynthesizedNode(SyntaxKind.TypeQuery) as TypeQueryNode;
node.exprName = exprName;
return node;
}
export function updateTypeQueryNode(node: TypeQueryNode, exprName: EntityName) {
return node.exprName !== exprName
? updateNode(createTypeQueryNode(exprName), node)
: node;
}
export function createTypeLiteralNode(members: ReadonlyArray<TypeElement> | undefined) {
const node = createSynthesizedNode(SyntaxKind.TypeLiteral) as TypeLiteralNode;
node.members = createNodeArray(members);
return node;
}
export function updateTypeLiteralNode(node: TypeLiteralNode, members: NodeArray<TypeElement>) {
return node.members !== members
? updateNode(createTypeLiteralNode(members), node)
: node;
}
export function createArrayTypeNode(elementType: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.ArrayType) as ArrayTypeNode;
node.elementType = parenthesizeArrayTypeMember(elementType);
return node;
}
export function updateArrayTypeNode(node: ArrayTypeNode, elementType: TypeNode): ArrayTypeNode {
return node.elementType !== elementType
? updateNode(createArrayTypeNode(elementType), node)
: node;
}
export function createTupleTypeNode(elementTypes: ReadonlyArray<TypeNode>) {
const node = createSynthesizedNode(SyntaxKind.TupleType) as TupleTypeNode;
node.elementTypes = createNodeArray(elementTypes);
return node;
}
export function updateTupleTypeNode(node: TupleTypeNode, elementTypes: ReadonlyArray<TypeNode>) {
return node.elementTypes !== elementTypes
? updateNode(createTupleTypeNode(elementTypes), node)
: node;
}
export function createOptionalTypeNode(type: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.OptionalType) as OptionalTypeNode;
node.type = parenthesizeArrayTypeMember(type);
return node;
}
export function updateOptionalTypeNode(node: OptionalTypeNode, type: TypeNode): OptionalTypeNode {
return node.type !== type
? updateNode(createOptionalTypeNode(type), node)
: node;
}
export function createRestTypeNode(type: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.RestType) as RestTypeNode;
node.type = type;
return node;
}
export function updateRestTypeNode(node: RestTypeNode, type: TypeNode): RestTypeNode {
return node.type !== type
? updateNode(createRestTypeNode(type), node)
: node;
}
export function createUnionTypeNode(types: ReadonlyArray<TypeNode>): UnionTypeNode {
return <UnionTypeNode>createUnionOrIntersectionTypeNode(SyntaxKind.UnionType, types);
}
export function updateUnionTypeNode(node: UnionTypeNode, types: NodeArray<TypeNode>) {
return updateUnionOrIntersectionTypeNode(node, types);
}
export function createIntersectionTypeNode(types: ReadonlyArray<TypeNode>): IntersectionTypeNode {
return <IntersectionTypeNode>createUnionOrIntersectionTypeNode(SyntaxKind.IntersectionType, types);
}
export function updateIntersectionTypeNode(node: IntersectionTypeNode, types: NodeArray<TypeNode>) {
return updateUnionOrIntersectionTypeNode(node, types);
}
export function createUnionOrIntersectionTypeNode(kind: SyntaxKind.UnionType | SyntaxKind.IntersectionType, types: ReadonlyArray<TypeNode>) {
const node = createSynthesizedNode(kind) as UnionTypeNode | IntersectionTypeNode;
node.types = parenthesizeElementTypeMembers(types);
return node;
}
function updateUnionOrIntersectionTypeNode<T extends UnionOrIntersectionTypeNode>(node: T, types: NodeArray<TypeNode>): T {
return node.types !== types
? updateNode(<T>createUnionOrIntersectionTypeNode(node.kind, types), node)
: node;
}
export function createConditionalTypeNode(checkType: TypeNode, extendsType: TypeNode, trueType: TypeNode, falseType: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.ConditionalType) as ConditionalTypeNode;
node.checkType = parenthesizeConditionalTypeMember(checkType);
node.extendsType = parenthesizeConditionalTypeMember(extendsType);
node.trueType = trueType;
node.falseType = falseType;
return node;
}
export function updateConditionalTypeNode(node: ConditionalTypeNode, checkType: TypeNode, extendsType: TypeNode, trueType: TypeNode, falseType: TypeNode) {
return node.checkType !== checkType
|| node.extendsType !== extendsType
|| node.trueType !== trueType
|| node.falseType !== falseType
? updateNode(createConditionalTypeNode(checkType, extendsType, trueType, falseType), node)
: node;
}
export function createInferTypeNode(typeParameter: TypeParameterDeclaration) {
const node = <InferTypeNode>createSynthesizedNode(SyntaxKind.InferType);
node.typeParameter = typeParameter;
return node;
}
export function updateInferTypeNode(node: InferTypeNode, typeParameter: TypeParameterDeclaration) {
return node.typeParameter !== typeParameter
? updateNode(createInferTypeNode(typeParameter), node)
: node;
}
export function createImportTypeNode(argument: TypeNode, qualifier?: EntityName, typeArguments?: ReadonlyArray<TypeNode>, isTypeOf?: boolean) {
const node = <ImportTypeNode>createSynthesizedNode(SyntaxKind.ImportType);
node.argument = argument;
node.qualifier = qualifier;
node.typeArguments = asNodeArray(typeArguments);
node.isTypeOf = isTypeOf;
return node;
}
export function updateImportTypeNode(node: ImportTypeNode, argument: TypeNode, qualifier?: EntityName, typeArguments?: ReadonlyArray<TypeNode>, isTypeOf?: boolean) {
return node.argument !== argument
|| node.qualifier !== qualifier
|| node.typeArguments !== typeArguments
|| node.isTypeOf !== isTypeOf
? updateNode(createImportTypeNode(argument, qualifier, typeArguments, isTypeOf), node)
: node;
}
export function createParenthesizedType(type: TypeNode) {
const node = <ParenthesizedTypeNode>createSynthesizedNode(SyntaxKind.ParenthesizedType);
node.type = type;
return node;
}
export function updateParenthesizedType(node: ParenthesizedTypeNode, type: TypeNode) {
return node.type !== type
? updateNode(createParenthesizedType(type), node)
: node;
}
export function createThisTypeNode() {
return <ThisTypeNode>createSynthesizedNode(SyntaxKind.ThisType);
}
export function createTypeOperatorNode(type: TypeNode): TypeOperatorNode;
export function createTypeOperatorNode(operator: SyntaxKind.KeyOfKeyword | SyntaxKind.UniqueKeyword, type: TypeNode): TypeOperatorNode;
export function createTypeOperatorNode(operatorOrType: SyntaxKind.KeyOfKeyword | SyntaxKind.UniqueKeyword | TypeNode, type?: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.TypeOperator) as TypeOperatorNode;
node.operator = typeof operatorOrType === "number" ? operatorOrType : SyntaxKind.KeyOfKeyword;
node.type = parenthesizeElementTypeMember(typeof operatorOrType === "number" ? type! : operatorOrType);
return node;
}
export function updateTypeOperatorNode(node: TypeOperatorNode, type: TypeNode) {
return node.type !== type ? updateNode(createTypeOperatorNode(node.operator, type), node) : node;
}
export function createIndexedAccessTypeNode(objectType: TypeNode, indexType: TypeNode) {
const node = createSynthesizedNode(SyntaxKind.IndexedAccessType) as IndexedAccessTypeNode;
node.objectType = parenthesizeElementTypeMember(objectType);
node.indexType = indexType;
return node;
}
export function updateIndexedAccessTypeNode(node: IndexedAccessTypeNode, objectType: TypeNode, indexType: TypeNode) {
return node.objectType !== objectType
|| node.indexType !== indexType
? updateNode(createIndexedAccessTypeNode(objectType, indexType), node)
: node;
}
export function createMappedTypeNode(readonlyToken: ReadonlyToken | PlusToken | MinusToken | undefined, typeParameter: TypeParameterDeclaration, questionToken: QuestionToken | PlusToken | MinusToken | undefined, type: TypeNode | undefined): MappedTypeNode {
const node = createSynthesizedNode(SyntaxKind.MappedType) as MappedTypeNode;
node.readonlyToken = readonlyToken;
node.typeParameter = typeParameter;
node.questionToken = questionToken;
node.type = type;
return node;
}
export function updateMappedTypeNode(node: MappedTypeNode, readonlyToken: ReadonlyToken | PlusToken | MinusToken | undefined, typeParameter: TypeParameterDeclaration, questionToken: QuestionToken | PlusToken | MinusToken | undefined, type: TypeNode | undefined): MappedTypeNode {
return node.readonlyToken !== readonlyToken
|| node.typeParameter !== typeParameter
|| node.questionToken !== questionToken
|| node.type !== type
? updateNode(createMappedTypeNode(readonlyToken, typeParameter, questionToken, type), node)
: node;
}
export function createLiteralTypeNode(literal: LiteralTypeNode["literal"]) {
const node = createSynthesizedNode(SyntaxKind.LiteralType) as LiteralTypeNode;
node.literal = literal;
return node;
}
export function updateLiteralTypeNode(node: LiteralTypeNode, literal: LiteralTypeNode["literal"]) {
return node.literal !== literal
? updateNode(createLiteralTypeNode(literal), node)
: node;
}
// Binding Patterns
export function createObjectBindingPattern(elements: ReadonlyArray<BindingElement>) {
const node = <ObjectBindingPattern>createSynthesizedNode(SyntaxKind.ObjectBindingPattern);
node.elements = createNodeArray(elements);
return node;
}
export function updateObjectBindingPattern(node: ObjectBindingPattern, elements: ReadonlyArray<BindingElement>) {
return node.elements !== elements
? updateNode(createObjectBindingPattern(elements), node)
: node;
}
export function createArrayBindingPattern(elements: ReadonlyArray<ArrayBindingElement>) {
const node = <ArrayBindingPattern>createSynthesizedNode(SyntaxKind.ArrayBindingPattern);
node.elements = createNodeArray(elements);
return node;
}
export function updateArrayBindingPattern(node: ArrayBindingPattern, elements: ReadonlyArray<ArrayBindingElement>) {
return node.elements !== elements
? updateNode(createArrayBindingPattern(elements), node)
: node;
}
export function createBindingElement(dotDotDotToken: DotDotDotToken | undefined, propertyName: string | PropertyName | undefined, name: string | BindingName, initializer?: Expression) {
const node = <BindingElement>createSynthesizedNode(SyntaxKind.BindingElement);
node.dotDotDotToken = dotDotDotToken;
node.propertyName = asName(propertyName);
node.name = asName(name);
node.initializer = initializer;
return node;
}
export function updateBindingElement(node: BindingElement, dotDotDotToken: DotDotDotToken | undefined, propertyName: PropertyName | undefined, name: BindingName, initializer: Expression | undefined) {
return node.propertyName !== propertyName
|| node.dotDotDotToken !== dotDotDotToken
|| node.name !== name
|| node.initializer !== initializer
? updateNode(createBindingElement(dotDotDotToken, propertyName, name, initializer), node)
: node;
}
// Expression
export function createArrayLiteral(elements?: ReadonlyArray<Expression>, multiLine?: boolean) {
const node = <ArrayLiteralExpression>createSynthesizedNode(SyntaxKind.ArrayLiteralExpression);
node.elements = parenthesizeListElements(createNodeArray(elements));
if (multiLine) node.multiLine = true;
return node;
}
export function updateArrayLiteral(node: ArrayLiteralExpression, elements: ReadonlyArray<Expression>) {
return node.elements !== elements
? updateNode(createArrayLiteral(elements, node.multiLine), node)
: node;
}
export function createObjectLiteral(properties?: ReadonlyArray<ObjectLiteralElementLike>, multiLine?: boolean) {
const node = <ObjectLiteralExpression>createSynthesizedNode(SyntaxKind.ObjectLiteralExpression);
node.properties = createNodeArray(properties);
if (multiLine) node.multiLine = true;
return node;
}
export function updateObjectLiteral(node: ObjectLiteralExpression, properties: ReadonlyArray<ObjectLiteralElementLike>) {
return node.properties !== properties
? updateNode(createObjectLiteral(properties, node.multiLine), node)
: node;
}
export function createPropertyAccess(expression: Expression, name: string | Identifier | undefined) {
const node = <PropertyAccessExpression>createSynthesizedNode(SyntaxKind.PropertyAccessExpression);