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factory.ts
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/// <reference path="core.ts"/>
/// <reference path="utilities.ts"/>
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);
if (original.startsOnNewLine) {
updated.startsOnNewLine = true;
}
aggregateTransformFlags(updated);
}
return updated;
}
/**
* Make `elements` into a `NodeArray<T>`. If `elements` is `undefined`, returns an empty `NodeArray<T>`.
*/
export function createNodeArray<T extends Node>(elements?: T[], hasTrailingComma?: boolean): NodeArray<T> {
if (elements) {
if (isNodeArray(elements)) {
return elements;
}
}
else {
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).
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
export function createLiteral(value: string): StringLiteral;
export function createLiteral(value: number): NumericLiteral;
export function createLiteral(value: boolean): BooleanLiteral;
/** Create a string literal whose source text is read from a source node during emit. */
export function createLiteral(sourceNode: StringLiteral | NumericLiteral | Identifier): StringLiteral;
export function createLiteral(value: string | number | boolean): PrimaryExpression;
export function createLiteral(value: string | number | boolean | StringLiteral | NumericLiteral | Identifier): PrimaryExpression {
if (typeof value === "number") {
return createNumericLiteral(value + "");
}
if (typeof value === "boolean") {
return value ? createTrue() : createFalse();
}
if (typeof value === "string") {
return createStringLiteral(value);
}
return createLiteralFromNode(value);
}
export function createNumericLiteral(value: string): NumericLiteral {
const node = <NumericLiteral>createSynthesizedNode(SyntaxKind.NumericLiteral);
node.text = value;
return node;
}
function createStringLiteral(text: string): StringLiteral {
const node = <StringLiteral>createSynthesizedNode(SyntaxKind.StringLiteral);
node.text = text;
return node;
}
function createLiteralFromNode(sourceNode: StringLiteral | NumericLiteral | Identifier): StringLiteral {
const node = createStringLiteral(sourceNode.text);
node.textSourceNode = sourceNode;
return node;
}
// Identifiers
export function createIdentifier(text: string): Identifier {
const node = <Identifier>createSynthesizedNode(SyntaxKind.Identifier);
node.text = escapeIdentifier(text);
node.originalKeywordKind = text ? stringToToken(text) : SyntaxKind.Unknown;
node.autoGenerateKind = GeneratedIdentifierKind.None;
node.autoGenerateId = 0;
return node;
}
let nextAutoGenerateId = 0;
/** Create a unique temporary variable. */
export function createTempVariable(recordTempVariable: ((node: Identifier) => void) | undefined): Identifier {
const name = createIdentifier("");
name.autoGenerateKind = GeneratedIdentifierKind.Auto;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
if (recordTempVariable) {
recordTempVariable(name);
}
return name;
}
/** Create a unique temporary variable for use in a loop. */
export function createLoopVariable(): Identifier {
const name = createIdentifier("");
name.autoGenerateKind = GeneratedIdentifierKind.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.autoGenerateKind = GeneratedIdentifierKind.Unique;
name.autoGenerateId = nextAutoGenerateId;
nextAutoGenerateId++;
return name;
}
/** Create a unique name generated for a node. */
export function getGeneratedNameForNode(node: Node): Identifier {
const name = createIdentifier("");
name.autoGenerateKind = GeneratedIdentifierKind.Node;
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 <PrimaryExpression>createSynthesizedNode(SyntaxKind.SuperKeyword);
}
export function createThis() {
return <PrimaryExpression>createSynthesizedNode(SyntaxKind.ThisKeyword);
}
export function createNull() {
return <PrimaryExpression>createSynthesizedNode(SyntaxKind.NullKeyword);
}
export function createTrue() {
return <BooleanLiteral>createSynthesizedNode(SyntaxKind.TrueKeyword);
}
export function createFalse() {
return <BooleanLiteral>createSynthesizedNode(SyntaxKind.FalseKeyword);
}
// 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;
}
export function createComputedPropertyName(expression: Expression) {
const node = <ComputedPropertyName>createSynthesizedNode(SyntaxKind.ComputedPropertyName);
node.expression = expression;
return node;
}
export function updateComputedPropertyName(node: ComputedPropertyName, expression: Expression) {
return node.expression !== expression
? updateNode(createComputedPropertyName(expression), node)
: node;
}
// Signature elements
export function createParameter(decorators: Decorator[] | undefined, modifiers: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, dotDotDotToken: DotDotDotToken | undefined, name: BindingName, type: TypeNode | undefined, initializer: Expression | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.dotDotDotToken !== dotDotDotToken
|| node.name !== name
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createParameter(decorators, modifiers, dotDotDotToken, name, node.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 members
export function createProperty(decorators: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: string | PropertyName, questionToken: QuestionToken | undefined, type: TypeNode | undefined, initializer: Expression) {
const node = <PropertyDeclaration>createSynthesizedNode(SyntaxKind.PropertyDeclaration);
node.decorators = asNodeArray(decorators);
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.questionToken = questionToken;
node.type = type;
node.initializer = initializer;
return node;
}
export function updateProperty(node: PropertyDeclaration, decorators: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: PropertyName, type: TypeNode | undefined, initializer: Expression) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.name !== name
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createProperty(decorators, modifiers, name, node.questionToken, type, initializer), node)
: node;
}
export function createMethod(decorators: Decorator[] | undefined, modifiers: Modifier[] | undefined, asteriskToken: AsteriskToken | undefined, name: string | PropertyName, typeParameters: TypeParameterDeclaration[] | undefined, parameters: 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.typeParameters = asNodeArray(typeParameters);
node.parameters = createNodeArray(parameters);
node.type = type;
node.body = body;
return node;
}
export function updateMethod(node: MethodDeclaration, decorators: Decorator[] | undefined, modifiers: Modifier[] | undefined, asteriskToken: AsteriskToken | undefined, name: PropertyName, typeParameters: TypeParameterDeclaration[] | undefined, parameters: ParameterDeclaration[], type: TypeNode | undefined, body: Block | undefined) {
return node.decorators !== decorators
|| node.modifiers !== modifiers
|| node.asteriskToken !== asteriskToken
|| node.name !== name
|| node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
|| node.body !== body
? updateNode(createMethod(decorators, modifiers, asteriskToken, name, typeParameters, parameters, type, body), node)
: node;
}
export function createConstructor(decorators: Decorator[] | undefined, modifiers: Modifier[] | undefined, parameters: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, parameters: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: string | PropertyName, parameters: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: PropertyName, parameters: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: string | PropertyName, parameters: 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: Decorator[] | undefined, modifiers: Modifier[] | undefined, name: PropertyName, parameters: 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;
}
// Binding Patterns
export function createObjectBindingPattern(elements: BindingElement[]) {
const node = <ObjectBindingPattern>createSynthesizedNode(SyntaxKind.ObjectBindingPattern);
node.elements = createNodeArray(elements);
return node;
}
export function updateObjectBindingPattern(node: ObjectBindingPattern, elements: BindingElement[]) {
return node.elements !== elements
? updateNode(createObjectBindingPattern(elements), node)
: node;
}
export function createArrayBindingPattern(elements: ArrayBindingElement[]) {
const node = <ArrayBindingPattern>createSynthesizedNode(SyntaxKind.ArrayBindingPattern);
node.elements = createNodeArray(elements);
return node;
}
export function updateArrayBindingPattern(node: ArrayBindingPattern, elements: 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?: 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: Expression[]) {
return node.elements !== elements
? updateNode(createArrayLiteral(elements, node.multiLine), node)
: node;
}
export function createObjectLiteral(properties?: 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: ObjectLiteralElementLike[]) {
return node.properties !== properties
? updateNode(createObjectLiteral(properties, node.multiLine), node)
: node;
}
export function createPropertyAccess(expression: Expression, name: string | Identifier) {
const node = <PropertyAccessExpression>createSynthesizedNode(SyntaxKind.PropertyAccessExpression);
node.expression = parenthesizeForAccess(expression);
node.name = asName(name);
setEmitFlags(node, EmitFlags.NoIndentation);
return node;
}
export function updatePropertyAccess(node: PropertyAccessExpression, expression: Expression, name: Identifier) {
// Because we are updating existed propertyAccess we want to inherit its emitFlags
// instead of using the default from createPropertyAccess
return node.expression !== expression
|| node.name !== name
? updateNode(setEmitFlags(createPropertyAccess(expression, name), getEmitFlags(node)), node)
: node;
}
export function createElementAccess(expression: Expression, index: number | Expression) {
const node = <ElementAccessExpression>createSynthesizedNode(SyntaxKind.ElementAccessExpression);
node.expression = parenthesizeForAccess(expression);
node.argumentExpression = asExpression(index);
return node;
}
export function updateElementAccess(node: ElementAccessExpression, expression: Expression, argumentExpression: Expression) {
return node.expression !== expression
|| node.argumentExpression !== argumentExpression
? updateNode(createElementAccess(expression, argumentExpression), node)
: node;
}
export function createCall(expression: Expression, typeArguments: TypeNode[] | undefined, argumentsArray: Expression[]) {
const node = <CallExpression>createSynthesizedNode(SyntaxKind.CallExpression);
node.expression = parenthesizeForAccess(expression);
node.typeArguments = asNodeArray(typeArguments);
node.arguments = parenthesizeListElements(createNodeArray(argumentsArray));
return node;
}
export function updateCall(node: CallExpression, expression: Expression, typeArguments: TypeNode[] | undefined, argumentsArray: Expression[]) {
return expression !== node.expression
|| typeArguments !== node.typeArguments
|| argumentsArray !== node.arguments
? updateNode(createCall(expression, typeArguments, argumentsArray), node)
: node;
}
export function createNew(expression: Expression, typeArguments: TypeNode[] | undefined, argumentsArray: Expression[] | undefined) {
const node = <NewExpression>createSynthesizedNode(SyntaxKind.NewExpression);
node.expression = parenthesizeForNew(expression);
node.typeArguments = asNodeArray(typeArguments);
node.arguments = argumentsArray ? parenthesizeListElements(createNodeArray(argumentsArray)) : undefined;
return node;
}
export function updateNew(node: NewExpression, expression: Expression, typeArguments: TypeNode[] | undefined, argumentsArray: Expression[] | undefined) {
return node.expression !== expression
|| node.typeArguments !== typeArguments
|| node.arguments !== argumentsArray
? updateNode(createNew(expression, typeArguments, argumentsArray), node)
: node;
}
export function createTaggedTemplate(tag: Expression, template: TemplateLiteral) {
const node = <TaggedTemplateExpression>createSynthesizedNode(SyntaxKind.TaggedTemplateExpression);
node.tag = parenthesizeForAccess(tag);
node.template = template;
return node;
}
export function updateTaggedTemplate(node: TaggedTemplateExpression, tag: Expression, template: TemplateLiteral) {
return node.tag !== tag
|| node.template !== template
? updateNode(createTaggedTemplate(tag, template), node)
: node;
}
export function createTypeAssertion(type: TypeNode, expression: Expression) {
const node = <TypeAssertion>createSynthesizedNode(SyntaxKind.TypeAssertionExpression);
node.type = type;
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function updateTypeAssertion(node: TypeAssertion, type: TypeNode, expression: Expression) {
return node.type !== type
|| node.expression !== expression
? updateNode(createTypeAssertion(type, expression), node)
: node;
}
export function createParen(expression: Expression) {
const node = <ParenthesizedExpression>createSynthesizedNode(SyntaxKind.ParenthesizedExpression);
node.expression = expression;
return node;
}
export function updateParen(node: ParenthesizedExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createParen(expression), node)
: node;
}
export function createFunctionExpression(modifiers: Modifier[] | undefined, asteriskToken: AsteriskToken | undefined, name: string | Identifier | undefined, typeParameters: TypeParameterDeclaration[] | undefined, parameters: ParameterDeclaration[], type: TypeNode | undefined, body: Block) {
const node = <FunctionExpression>createSynthesizedNode(SyntaxKind.FunctionExpression);
node.modifiers = asNodeArray(modifiers);
node.asteriskToken = asteriskToken;
node.name = asName(name);
node.typeParameters = asNodeArray(typeParameters);
node.parameters = createNodeArray(parameters);
node.type = type;
node.body = body;
return node;
}
export function updateFunctionExpression(node: FunctionExpression, modifiers: Modifier[] | undefined, asteriskToken: AsteriskToken | undefined, name: Identifier | undefined, typeParameters: TypeParameterDeclaration[] | undefined, parameters: ParameterDeclaration[], type: TypeNode | undefined, body: Block) {
return node.name !== name
|| node.modifiers !== modifiers
|| node.asteriskToken !== asteriskToken
|| node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
|| node.body !== body
? updateNode(createFunctionExpression(modifiers, asteriskToken, name, typeParameters, parameters, type, body), node)
: node;
}
export function createArrowFunction(modifiers: Modifier[] | undefined, typeParameters: TypeParameterDeclaration[] | undefined, parameters: ParameterDeclaration[], type: TypeNode | undefined, equalsGreaterThanToken: EqualsGreaterThanToken | undefined, body: ConciseBody) {
const node = <ArrowFunction>createSynthesizedNode(SyntaxKind.ArrowFunction);
node.modifiers = asNodeArray(modifiers);
node.typeParameters = asNodeArray(typeParameters);
node.parameters = createNodeArray(parameters);
node.type = type;
node.equalsGreaterThanToken = equalsGreaterThanToken || createToken(SyntaxKind.EqualsGreaterThanToken);
node.body = parenthesizeConciseBody(body);
return node;
}
export function updateArrowFunction(node: ArrowFunction, modifiers: Modifier[] | undefined, typeParameters: TypeParameterDeclaration[] | undefined, parameters: ParameterDeclaration[], type: TypeNode | undefined, body: ConciseBody) {
return node.modifiers !== modifiers
|| node.typeParameters !== typeParameters
|| node.parameters !== parameters
|| node.type !== type
|| node.body !== body
? updateNode(createArrowFunction(modifiers, typeParameters, parameters, type, node.equalsGreaterThanToken, body), node)
: node;
}
export function createDelete(expression: Expression) {
const node = <DeleteExpression>createSynthesizedNode(SyntaxKind.DeleteExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function updateDelete(node: DeleteExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createDelete(expression), node)
: node;
}
export function createTypeOf(expression: Expression) {
const node = <TypeOfExpression>createSynthesizedNode(SyntaxKind.TypeOfExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function updateTypeOf(node: TypeOfExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createTypeOf(expression), node)
: node;
}
export function createVoid(expression: Expression) {
const node = <VoidExpression>createSynthesizedNode(SyntaxKind.VoidExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function updateVoid(node: VoidExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createVoid(expression), node)
: node;
}
export function createAwait(expression: Expression) {
const node = <AwaitExpression>createSynthesizedNode(SyntaxKind.AwaitExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function updateAwait(node: AwaitExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createAwait(expression), node)
: node;
}
export function createPrefix(operator: PrefixUnaryOperator, operand: Expression) {
const node = <PrefixUnaryExpression>createSynthesizedNode(SyntaxKind.PrefixUnaryExpression);
node.operator = operator;
node.operand = parenthesizePrefixOperand(operand);
return node;
}
export function updatePrefix(node: PrefixUnaryExpression, operand: Expression) {
return node.operand !== operand
? updateNode(createPrefix(node.operator, operand), node)
: node;
}
export function createPostfix(operand: Expression, operator: PostfixUnaryOperator) {
const node = <PostfixUnaryExpression>createSynthesizedNode(SyntaxKind.PostfixUnaryExpression);
node.operand = parenthesizePostfixOperand(operand);
node.operator = operator;
return node;
}
export function updatePostfix(node: PostfixUnaryExpression, operand: Expression) {
return node.operand !== operand
? updateNode(createPostfix(operand, node.operator), node)
: node;
}
export function createBinary(left: Expression, operator: BinaryOperator | BinaryOperatorToken, right: Expression) {
const node = <BinaryExpression>createSynthesizedNode(SyntaxKind.BinaryExpression);
const operatorToken = asToken(operator);
const operatorKind = operatorToken.kind;
node.left = parenthesizeBinaryOperand(operatorKind, left, /*isLeftSideOfBinary*/ true, /*leftOperand*/ undefined);
node.operatorToken = operatorToken;
node.right = parenthesizeBinaryOperand(operatorKind, right, /*isLeftSideOfBinary*/ false, node.left);
return node;
}
export function updateBinary(node: BinaryExpression, left: Expression, right: Expression) {
return node.left !== left
|| node.right !== right
? updateNode(createBinary(left, node.operatorToken, right), node)
: node;
}
export function createConditional(condition: Expression, whenTrue: Expression, whenFalse: Expression): ConditionalExpression;
export function createConditional(condition: Expression, questionToken: QuestionToken, whenTrue: Expression, colonToken: ColonToken, whenFalse: Expression): ConditionalExpression;
export function createConditional(condition: Expression, questionTokenOrWhenTrue: QuestionToken | Expression, whenTrueOrWhenFalse: Expression, colonToken?: ColonToken, whenFalse?: Expression) {
const node = <ConditionalExpression>createSynthesizedNode(SyntaxKind.ConditionalExpression);
node.condition = parenthesizeForConditionalHead(condition);
node.questionToken = whenFalse ? <QuestionToken>questionTokenOrWhenTrue : createToken(SyntaxKind.QuestionToken);
node.whenTrue = parenthesizeSubexpressionOfConditionalExpression(whenFalse ? whenTrueOrWhenFalse : <Expression>questionTokenOrWhenTrue);
node.colonToken = whenFalse ? colonToken : createToken(SyntaxKind.ColonToken);
node.whenFalse = parenthesizeSubexpressionOfConditionalExpression(whenFalse ? whenFalse : whenTrueOrWhenFalse);
return node;
}
export function updateConditional(node: ConditionalExpression, condition: Expression, whenTrue: Expression, whenFalse: Expression) {
return node.condition !== condition
|| node.whenTrue !== whenTrue
|| node.whenFalse !== whenFalse
? updateNode(createConditional(condition, node.questionToken, whenTrue, node.colonToken, whenFalse), node)
: node;
}
export function createTemplateExpression(head: TemplateHead, templateSpans: TemplateSpan[]) {
const node = <TemplateExpression>createSynthesizedNode(SyntaxKind.TemplateExpression);
node.head = head;
node.templateSpans = createNodeArray(templateSpans);
return node;
}
export function updateTemplateExpression(node: TemplateExpression, head: TemplateHead, templateSpans: TemplateSpan[]) {
return node.head !== head
|| node.templateSpans !== templateSpans
? updateNode(createTemplateExpression(head, templateSpans), node)
: node;
}
export function createYield(expression?: Expression): YieldExpression;
export function createYield(asteriskToken: AsteriskToken, expression: Expression): YieldExpression;
export function createYield(asteriskTokenOrExpression?: AsteriskToken | Expression, expression?: Expression) {
const node = <YieldExpression>createSynthesizedNode(SyntaxKind.YieldExpression);
node.asteriskToken = asteriskTokenOrExpression && asteriskTokenOrExpression.kind === SyntaxKind.AsteriskToken ? <AsteriskToken>asteriskTokenOrExpression : undefined;
node.expression = asteriskTokenOrExpression && asteriskTokenOrExpression.kind !== SyntaxKind.AsteriskToken ? <Expression>asteriskTokenOrExpression : expression;
return node;
}
export function updateYield(node: YieldExpression, asteriskToken: AsteriskToken | undefined, expression: Expression) {
return node.expression !== expression
|| node.asteriskToken !== asteriskToken
? updateNode(createYield(asteriskToken, expression), node)
: node;
}
export function createSpread(expression: Expression) {
const node = <SpreadElement>createSynthesizedNode(SyntaxKind.SpreadElement);
node.expression = parenthesizeExpressionForList(expression);
return node;
}
export function updateSpread(node: SpreadElement, expression: Expression) {
return node.expression !== expression
? updateNode(createSpread(expression), node)
: node;
}
export function createClassExpression(modifiers: Modifier[] | undefined, name: string | Identifier | undefined, typeParameters: TypeParameterDeclaration[] | undefined, heritageClauses: HeritageClause[], members: ClassElement[]) {
const node = <ClassExpression>createSynthesizedNode(SyntaxKind.ClassExpression);
node.decorators = undefined;
node.modifiers = asNodeArray(modifiers);
node.name = asName(name);
node.typeParameters = asNodeArray(typeParameters);
node.heritageClauses = asNodeArray(heritageClauses);
node.members = createNodeArray(members);
return node;
}
export function updateClassExpression(node: ClassExpression, modifiers: Modifier[] | undefined, name: Identifier | undefined, typeParameters: TypeParameterDeclaration[] | undefined, heritageClauses: HeritageClause[], members: ClassElement[]) {
return node.modifiers !== modifiers
|| node.name !== name
|| node.typeParameters !== typeParameters
|| node.heritageClauses !== heritageClauses
|| node.members !== members
? updateNode(createClassExpression(modifiers, name, typeParameters, heritageClauses, members), node)
: node;
}
export function createOmittedExpression() {
return <OmittedExpression>createSynthesizedNode(SyntaxKind.OmittedExpression);
}
export function createExpressionWithTypeArguments(typeArguments: TypeNode[], expression: Expression) {
const node = <ExpressionWithTypeArguments>createSynthesizedNode(SyntaxKind.ExpressionWithTypeArguments);
node.expression = parenthesizeForAccess(expression);
node.typeArguments = asNodeArray(typeArguments);
return node;
}
export function updateExpressionWithTypeArguments(node: ExpressionWithTypeArguments, typeArguments: TypeNode[], expression: Expression) {
return node.typeArguments !== typeArguments
|| node.expression !== expression
? updateNode(createExpressionWithTypeArguments(typeArguments, expression), node)
: node;
}
export function createAsExpression(expression: Expression, type: TypeNode) {
const node = <AsExpression>createSynthesizedNode(SyntaxKind.AsExpression);
node.expression = expression;
node.type = type;
return node;
}
export function updateAsExpression(node: AsExpression, expression: Expression, type: TypeNode) {
return node.expression !== expression
|| node.type !== type
? updateNode(createAsExpression(expression, type), node)
: node;
}
export function createNonNullExpression(expression: Expression) {
const node = <NonNullExpression>createSynthesizedNode(SyntaxKind.NonNullExpression);
node.expression = parenthesizeForAccess(expression);
return node;
}
export function updateNonNullExpression(node: NonNullExpression, expression: Expression) {
return node.expression !== expression
? updateNode(createNonNullExpression(expression), node)
: node;
}
// Misc
export function createTemplateSpan(expression: Expression, literal: TemplateMiddle | TemplateTail) {
const node = <TemplateSpan>createSynthesizedNode(SyntaxKind.TemplateSpan);
node.expression = expression;
node.literal = literal;
return node;
}
export function updateTemplateSpan(node: TemplateSpan, expression: Expression, literal: TemplateMiddle | TemplateTail) {
return node.expression !== expression
|| node.literal !== literal
? updateNode(createTemplateSpan(expression, literal), node)
: node;
}
// Element
export function createBlock(statements: Statement[], multiLine?: boolean): Block {
const block = <Block>createSynthesizedNode(SyntaxKind.Block);
block.statements = createNodeArray(statements);
if (multiLine) block.multiLine = multiLine;
return block;
}
export function updateBlock(node: Block, statements: Statement[]) {
return statements !== node.statements
? updateNode(createBlock(statements, node.multiLine), node)
: node;
}
export function createVariableStatement(modifiers: Modifier[] | undefined, declarationList: VariableDeclarationList | VariableDeclaration[]) {
const node = <VariableStatement>createSynthesizedNode(SyntaxKind.VariableStatement);
node.decorators = undefined;
node.modifiers = asNodeArray(modifiers);
node.declarationList = isArray(declarationList) ? createVariableDeclarationList(declarationList) : declarationList;
return node;
}
export function updateVariableStatement(node: VariableStatement, modifiers: Modifier[] | undefined, declarationList: VariableDeclarationList) {
return node.modifiers !== modifiers
|| node.declarationList !== declarationList
? updateNode(createVariableStatement(modifiers, declarationList), node)
: node;
}
export function createVariableDeclarationList(declarations: VariableDeclaration[], flags?: NodeFlags) {
const node = <VariableDeclarationList>createSynthesizedNode(SyntaxKind.VariableDeclarationList);
node.flags |= flags;
node.declarations = createNodeArray(declarations);
return node;
}
export function updateVariableDeclarationList(node: VariableDeclarationList, declarations: VariableDeclaration[]) {
return node.declarations !== declarations
? updateNode(createVariableDeclarationList(declarations, node.flags), node)
: node;
}
export function createVariableDeclaration(name: string | BindingName, type?: TypeNode, initializer?: Expression) {
const node = <VariableDeclaration>createSynthesizedNode(SyntaxKind.VariableDeclaration);
node.name = asName(name);
node.type = type;
node.initializer = initializer !== undefined ? parenthesizeExpressionForList(initializer) : undefined;
return node;
}
export function updateVariableDeclaration(node: VariableDeclaration, name: BindingName, type: TypeNode | undefined, initializer: Expression | undefined) {
return node.name !== name
|| node.type !== type
|| node.initializer !== initializer
? updateNode(createVariableDeclaration(name, type, initializer), node)
: node;
}
export function createEmptyStatement() {
return <EmptyStatement>createSynthesizedNode(SyntaxKind.EmptyStatement);
}
export function createStatement(expression: Expression) {
const node = <ExpressionStatement>createSynthesizedNode(SyntaxKind.ExpressionStatement);
node.expression = parenthesizeExpressionForExpressionStatement(expression);
return node;
}
export function updateStatement(node: ExpressionStatement, expression: Expression) {
return node.expression !== expression
? updateNode(createStatement(expression), node)
: node;
}
export function createIf(expression: Expression, thenStatement: Statement, elseStatement?: Statement) {
const node = <IfStatement>createSynthesizedNode(SyntaxKind.IfStatement);
node.expression = expression;
node.thenStatement = thenStatement;
node.elseStatement = elseStatement;
return node;
}
export function updateIf(node: IfStatement, expression: Expression, thenStatement: Statement, elseStatement: Statement | undefined) {
return node.expression !== expression
|| node.thenStatement !== thenStatement
|| node.elseStatement !== elseStatement
? updateNode(createIf(expression, thenStatement, elseStatement), node)
: node;
}
export function createDo(statement: Statement, expression: Expression) {
const node = <DoStatement>createSynthesizedNode(SyntaxKind.DoStatement);
node.statement = statement;
node.expression = expression;
return node;
}
export function updateDo(node: DoStatement, statement: Statement, expression: Expression) {
return node.statement !== statement
|| node.expression !== expression
? updateNode(createDo(statement, expression), node)
: node;
}
export function createWhile(expression: Expression, statement: Statement) {
const node = <WhileStatement>createSynthesizedNode(SyntaxKind.WhileStatement);
node.expression = expression;
node.statement = statement;
return node;
}
export function updateWhile(node: WhileStatement, expression: Expression, statement: Statement) {
return node.expression !== expression
|| node.statement !== statement
? updateNode(createWhile(expression, statement), node)
: node;
}
export function createFor(initializer: ForInitializer | undefined, condition: Expression | undefined, incrementor: Expression | undefined, statement: Statement) {
const node = <ForStatement>createSynthesizedNode(SyntaxKind.ForStatement);
node.initializer = initializer;
node.condition = condition;
node.incrementor = incrementor;
node.statement = statement;
return node;
}
export function updateFor(node: ForStatement, initializer: ForInitializer | undefined, condition: Expression | undefined, incrementor: Expression | undefined, statement: Statement) {
return node.initializer !== initializer
|| node.condition !== condition
|| node.incrementor !== incrementor
|| node.statement !== statement
? updateNode(createFor(initializer, condition, incrementor, statement), node)
: node;
}
export function createForIn(initializer: ForInitializer, expression: Expression, statement: Statement) {
const node = <ForInStatement>createSynthesizedNode(SyntaxKind.ForInStatement);
node.initializer = initializer;
node.expression = expression;
node.statement = statement;
return node;
}
export function updateForIn(node: ForInStatement, initializer: ForInitializer, expression: Expression, statement: Statement) {
return node.initializer !== initializer
|| node.expression !== expression
|| node.statement !== statement
? updateNode(createForIn(initializer, expression, statement), node)
: node;
}
export function createForOf(awaitModifier: AwaitKeywordToken, initializer: ForInitializer, expression: Expression, statement: Statement) {
const node = <ForOfStatement>createSynthesizedNode(SyntaxKind.ForOfStatement);
node.awaitModifier = awaitModifier;
node.initializer = initializer;
node.expression = expression;
node.statement = statement;
return node;
}
export function updateForOf(node: ForOfStatement, awaitModifier: AwaitKeywordToken, initializer: ForInitializer, expression: Expression, statement: Statement) {
return node.awaitModifier !== awaitModifier
|| node.initializer !== initializer
|| node.expression !== expression
|| node.statement !== statement
? updateNode(createForOf(awaitModifier, initializer, expression, statement), node)
: node;
}
export function createContinue(label?: string | Identifier): ContinueStatement {
const node = <ContinueStatement>createSynthesizedNode(SyntaxKind.ContinueStatement);
node.label = asName(label);
return node;
}