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Copy pathfactory.ts
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1793 lines (1561 loc) · 74.8 KB
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/// <reference path="core.ts"/>
/// <reference path="utilities.ts"/>
/* @internal */
namespace ts {
let NodeConstructor: new (kind: SyntaxKind, pos: number, end: number) => Node;
let SourceFileConstructor: new (kind: SyntaxKind, pos: number, end: number) => Node;
function createNode(kind: SyntaxKind, location?: TextRange, flags?: NodeFlags): Node {
const ConstructorForKind = kind === SyntaxKind.SourceFile
? (SourceFileConstructor || (SourceFileConstructor = objectAllocator.getSourceFileConstructor()))
: (NodeConstructor || (NodeConstructor = objectAllocator.getNodeConstructor()));
const node = location
? new ConstructorForKind(kind, location.pos, location.end)
: new ConstructorForKind(kind, /*pos*/ -1, /*end*/ -1);
if (flags) {
node.flags = flags;
}
return node;
}
export function createNodeArray<T extends Node>(elements?: T[], location?: TextRange, hasTrailingComma?: boolean): NodeArray<T> {
if (elements) {
if (isNodeArray(elements)) {
return elements;
}
}
else {
elements = [];
}
const array = <NodeArray<T>>elements;
if (location) {
array.pos = location.pos;
array.end = location.end;
}
else {
array.pos = -1;
array.end = -1;
}
if (hasTrailingComma) {
array.hasTrailingComma = true;
}
return array;
}
export function createSynthesizedNode(kind: SyntaxKind, startsOnNewLine?: boolean): Node {
const node = createNode(kind, /*location*/ undefined);
node.startsOnNewLine = startsOnNewLine;
return node;
}
export function createSynthesizedNodeArray<T extends Node>(elements?: T[]): NodeArray<T> {
return createNodeArray(elements, /*location*/ undefined);
}
/**
* Creates a shallow, memberwise clone of a node with no source map location.
*/
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>createNode(node.kind, /*location*/ undefined);
clone.flags = node.flags;
clone.original = node;
for (const key in node) {
if (clone.hasOwnProperty(key) || !node.hasOwnProperty(key)) {
continue;
}
(<any>clone)[key] = (<any>node)[key];
}
return clone;
}
/**
* Creates a shallow, memberwise clone of a node for mutation.
*/
export function getMutableClone<T extends Node>(node: T): T {
const clone = getSynthesizedClone(node);
clone.pos = node.pos;
clone.end = node.end;
clone.parent = node.parent;
return clone;
}
/**
* Creates a shallow, memberwise clone of a node at the specified source map location.
*/
export function getRelocatedClone<T extends Node>(node: T, location: TextRange): T {
const clone = getSynthesizedClone(node);
clone.pos = location.pos;
clone.end = location.end;
return clone;
}
/**
* Gets a clone of a node with a unique node ID.
*/
export function getUniqueClone<T extends Node>(node: T): T {
const clone = getSynthesizedClone(node);
clone.id = undefined;
getNodeId(clone);
return clone;
}
// Literals
export function createLiteral(textSource: StringLiteral | Identifier, location?: TextRange): StringLiteral;
export function createLiteral(value: string, location?: TextRange): StringLiteral;
export function createLiteral(value: number, location?: TextRange): LiteralExpression;
export function createLiteral(value: string | number | boolean, location?: TextRange): PrimaryExpression;
export function createLiteral(value: string | number | boolean | StringLiteral | Identifier, location?: TextRange): PrimaryExpression {
if (typeof value === "number") {
const node = <LiteralExpression>createNode(SyntaxKind.NumericLiteral, location);
node.text = value.toString();
return node;
}
else if (typeof value === "boolean") {
return <PrimaryExpression>createNode(value ? SyntaxKind.TrueKeyword : SyntaxKind.FalseKeyword, location);
}
else if (typeof value === "string") {
const node = <StringLiteral>createNode(SyntaxKind.StringLiteral, location);
node.text = value;
return node;
}
else {
const node = <StringLiteral>createNode(SyntaxKind.StringLiteral, location);
node.textSourceNode = value;
node.text = value.text;
return node;
}
}
// Identifiers
export function createIdentifier(text: string, location?: TextRange): Identifier {
const node = <Identifier>createNode(SyntaxKind.Identifier, location);
node.text = escapeIdentifier(text);
node.originalKeywordKind = stringToToken(text);
return node;
}
export function createTempVariable(recordTempVariable: (node: Identifier) => void, location?: TextRange): Identifier {
const name = <Identifier>createNode(SyntaxKind.Identifier, location);
name.autoGenerateKind = GeneratedIdentifierKind.Auto;
getNodeId(name);
if (recordTempVariable) {
recordTempVariable(name);
}
return name;
}
export function createLoopVariable(location?: TextRange): Identifier {
const name = <Identifier>createNode(SyntaxKind.Identifier, location);
name.autoGenerateKind = GeneratedIdentifierKind.Loop;
getNodeId(name);
return name;
}
export function createUniqueName(text: string, location?: TextRange): Identifier {
const name = <Identifier>createNode(SyntaxKind.Identifier, location);
name.text = text;
name.autoGenerateKind = GeneratedIdentifierKind.Unique;
getNodeId(name);
return name;
}
export function getGeneratedNameForNode(node: Node, location?: TextRange): Identifier {
const name = <Identifier>createNode(SyntaxKind.Identifier, location);
name.autoGenerateKind = GeneratedIdentifierKind.Node;
name.original = node;
getNodeId(name);
return name;
}
// Reserved words
export function createSuper() {
const node = <PrimaryExpression>createNode(SyntaxKind.SuperKeyword);
return node;
}
export function createThis(location?: TextRange) {
const node = <PrimaryExpression>createNode(SyntaxKind.ThisKeyword, location);
return node;
}
export function createNull() {
const node = <PrimaryExpression>createNode(SyntaxKind.NullKeyword);
return node;
}
// Names
export function createComputedPropertyName(expression: Expression, location?: TextRange) {
const node = <ComputedPropertyName>createNode(SyntaxKind.ComputedPropertyName, location);
node.expression = expression;
return node;
}
// Type members
export function createMethod(modifiers: Modifier[], name: string | PropertyName, parameters: ParameterDeclaration[], body: Block, location?: TextRange) {
const node = <MethodDeclaration>createNode(SyntaxKind.MethodDeclaration, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.body = body;
return node;
}
export function createConstructor(parameters: ParameterDeclaration[], body: Block, location?: TextRange) {
const node = <ConstructorDeclaration>createNode(SyntaxKind.Constructor, location);
node.decorators = undefined;
node.modifiers = undefined;
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = undefined;
node.body = body;
return node;
}
export function createGetAccessor(modifiers: Modifier[], name: string | PropertyName, body: Block, location?: TextRange) {
const node = <GetAccessorDeclaration>createNode(SyntaxKind.GetAccessor, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.typeParameters = undefined;
node.parameters = createNodeArray<ParameterDeclaration>();
node.body = body;
return node;
}
export function createSetAccessor(modifiers: Modifier[], name: string | PropertyName, parameter: ParameterDeclaration, body: Block, location?: TextRange) {
const node = <SetAccessorDeclaration>createNode(SyntaxKind.SetAccessor, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.typeParameters = undefined;
node.parameters = createNodeArray([parameter]);
node.body = body;
return node;
}
export function createParameter(name: string | Identifier | BindingPattern, initializer?: Expression, location?: TextRange) {
const node = <ParameterDeclaration>createNode(SyntaxKind.Parameter, location);
node.decorators = undefined;
node.modifiers = undefined;
node.dotDotDotToken = undefined;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.questionToken = undefined;
node.type = undefined;
node.initializer = initializer ? parenthesizeExpressionForList(initializer) : undefined;
return node;
}
// Expression
export function createArrayLiteral(elements?: Expression[], location?: TextRange, multiLine?: boolean) {
const node = <ArrayLiteralExpression>createNode(SyntaxKind.ArrayLiteralExpression, location);
node.elements = parenthesizeListElements(createNodeArray(elements));
if (multiLine) {
node.multiLine = multiLine;
}
return node;
}
export function createObjectLiteral(properties?: ObjectLiteralElement[], location?: TextRange, multiLine?: boolean) {
const node = <ObjectLiteralExpression>createNode(SyntaxKind.ObjectLiteralExpression, location);
node.properties = createNodeArray(properties);
if (multiLine) {
node.multiLine = multiLine;
}
return node;
}
export function createPropertyAccess(expression: Expression, name: string | Identifier, location?: TextRange) {
const node = <PropertyAccessExpression>createNode(SyntaxKind.PropertyAccessExpression, location);
node.expression = parenthesizeForAccess(expression);
node.dotToken = createSynthesizedNode(SyntaxKind.DotToken);
node.name = typeof name === "string" ? createIdentifier(name) : name;
return node;
}
export function createElementAccess(expression: Expression, index: number | Expression, location?: TextRange) {
const node = <ElementAccessExpression>createNode(SyntaxKind.ElementAccessExpression, location);
node.expression = parenthesizeForAccess(expression);
node.argumentExpression = typeof index === "number" ? createLiteral(index) : index;
return node;
}
export function createCall(expression: Expression, argumentsArray: Expression[], location?: TextRange) {
const node = <CallExpression>createNode(SyntaxKind.CallExpression, location);
node.expression = parenthesizeForAccess(expression);
node.arguments = parenthesizeListElements(createNodeArray(argumentsArray));
return node;
}
export function createNew(expression: Expression, argumentsArray: Expression[], location?: TextRange) {
const node = <NewExpression>createNode(SyntaxKind.NewExpression, location);
node.expression = parenthesizeForNew(expression);
node.arguments = argumentsArray
? parenthesizeListElements(createNodeArray(argumentsArray))
: undefined;
return node;
}
export function createParen(expression: Expression, location?: TextRange) {
const node = <ParenthesizedExpression>createNode(SyntaxKind.ParenthesizedExpression, location);
node.expression = expression;
return node;
}
export function createFunctionExpression(asteriskToken: Node, name: string | Identifier, parameters: ParameterDeclaration[], body: Block, location?: TextRange, original?: Node) {
const node = <FunctionExpression>createNode(SyntaxKind.FunctionExpression, location);
node.modifiers = undefined;
node.asteriskToken = asteriskToken;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = undefined;
node.body = body;
if (original) {
node.original = original;
}
return node;
}
export function createArrowFunction(parameters: ParameterDeclaration[], body: Expression | Block, location?: TextRange) {
const node = <ArrowFunction>createNode(SyntaxKind.ArrowFunction, location);
node.modifiers = undefined;
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = undefined;
node.equalsGreaterThanToken = createNode(SyntaxKind.EqualsGreaterThanToken);
node.body = parenthesizeConciseBody(body);
return node;
}
export function createTypeOf(expression: Expression) {
const node = <TypeOfExpression>createNode(SyntaxKind.TypeOfExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function createVoid(expression: Expression) {
const node = <VoidExpression>createNode(SyntaxKind.VoidExpression);
node.expression = parenthesizePrefixOperand(expression);
return node;
}
export function createPrefix(operator: SyntaxKind, operand: Expression, location?: TextRange) {
const node = <PrefixUnaryExpression>createNode(SyntaxKind.PrefixUnaryExpression, location);
node.operator = operator;
node.operand = parenthesizePrefixOperand(operand);
return node;
}
export function createPostfix(operand: Expression, operator: SyntaxKind, location?: TextRange) {
const node = <PostfixUnaryExpression>createNode(SyntaxKind.PostfixUnaryExpression, location);
node.operand = parenthesizePostfixOperand(operand);
node.operator = operator;
return node;
}
export function createBinary(left: Expression, operator: SyntaxKind, right: Expression, location?: TextRange) {
const node = <BinaryExpression>createNode(SyntaxKind.BinaryExpression, location);
node.left = parenthesizeBinaryOperand(operator, left, /*isLeftSideOfBinary*/ true, /*leftOperand*/ undefined);
node.operatorToken = createSynthesizedNode(operator);
node.right = parenthesizeBinaryOperand(operator, right, /*isLeftSideOfBinary*/ false, node.left);
return node;
}
export function createConditional(condition: Expression, whenTrue: Expression, whenFalse: Expression) {
const node = <ConditionalExpression>createNode(SyntaxKind.ConditionalExpression);
node.condition = condition;
node.questionToken = createSynthesizedNode(SyntaxKind.QualifiedName);
node.whenTrue = whenTrue;
node.colonToken = createSynthesizedNode(SyntaxKind.ColonToken);
node.whenFalse = whenFalse;
return node;
}
export function createYield(expression: Expression, location?: TextRange) {
const node = <YieldExpression>createNode(SyntaxKind.YieldExpression, location);
node.expression = expression;
return node;
}
export function createSpread(expression: Expression) {
const node = <SpreadElementExpression>createNode(SyntaxKind.SpreadElementExpression);
node.expression = parenthesizeExpressionForList(expression);
return node;
}
export function createClassExpression(name: Identifier, heritageClauses: HeritageClause[], members: ClassElement[], location?: TextRange) {
const node = <ClassExpression>createNode(SyntaxKind.ClassExpression, location);
node.decorators = undefined;
node.modifiers = undefined;
node.name = name;
node.typeParameters = undefined;
node.heritageClauses = createNodeArray(heritageClauses);
node.members = createNodeArray(members);
return node;
}
export function createOmittedExpression(location?: TextRange) {
const node = <OmittedExpression>createNode(SyntaxKind.OmittedExpression, location);
return node;
}
export function createExpressionWithTypeArguments(expression: Expression, location?: TextRange) {
const node = <ExpressionWithTypeArguments>createNode(SyntaxKind.ExpressionWithTypeArguments, location);
node.typeArguments = undefined;
node.expression = parenthesizeForAccess(expression);
return node;
}
// Element
export function createBlock(statements: Statement[], location?: TextRange, multiLine?: boolean): Block {
const block = <Block>createNode(SyntaxKind.Block, location);
block.statements = createNodeArray(statements);
if (multiLine) {
block.multiLine = true;
}
return block;
}
export function createVariableStatement(modifiers: Modifier[], declarationList: VariableDeclarationList | VariableDeclaration[], location?: TextRange): VariableStatement {
const node = <VariableStatement>createNode(SyntaxKind.VariableStatement, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.declarationList = isArray(declarationList) ? createVariableDeclarationList(declarationList) : declarationList;
return node;
}
export function createVariableDeclarationList(declarations: VariableDeclaration[], location?: TextRange, flags?: NodeFlags): VariableDeclarationList {
const node = <VariableDeclarationList>createNode(SyntaxKind.VariableDeclarationList, location, flags);
node.declarations = createNodeArray(declarations);
return node;
}
export function createLetDeclarationList(declarations: VariableDeclaration[], location?: TextRange) {
return createVariableDeclarationList(declarations, location, NodeFlags.Let);
}
export function createConstDeclarationList(declarations: VariableDeclaration[], location?: TextRange) {
return createVariableDeclarationList(declarations, location, NodeFlags.Const);
}
export function createVariableDeclaration(name: string | BindingPattern | Identifier, initializer?: Expression, location?: TextRange): VariableDeclaration {
const node = <VariableDeclaration>createNode(SyntaxKind.VariableDeclaration, location);
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.initializer = initializer !== undefined ? parenthesizeExpressionForList(initializer) : undefined;
return node;
}
export function createEmptyStatement(location: TextRange) {
return <EmptyStatement>createNode(SyntaxKind.EmptyStatement, location);
}
export function createStatement(expression: Expression, location?: TextRange): ExpressionStatement {
const node = <ExpressionStatement>createNode(SyntaxKind.ExpressionStatement, location);
node.expression = parenthesizeExpressionForExpressionStatement(expression);
return node;
}
export function createIf(expression: Expression, thenStatement: Statement, elseStatement?: Statement, location?: TextRange, options?: { startOnNewLine?: boolean; }) {
const node = <IfStatement>createNode(SyntaxKind.IfStatement, location);
node.expression = expression;
node.thenStatement = thenStatement;
node.elseStatement = elseStatement;
if (options && options.startOnNewLine) {
node.startsOnNewLine = true;
}
return node;
}
export function createSwitch(expression: Expression, caseBlock: CaseBlock, location?: TextRange): SwitchStatement {
const node = <SwitchStatement>createNode(SyntaxKind.SwitchStatement, location);
node.expression = parenthesizeExpressionForList(expression);
node.caseBlock = caseBlock;
return node;
}
export function createCaseBlock(clauses: CaseClause[], location?: TextRange): CaseBlock {
const node = <CaseBlock>createNode(SyntaxKind.CaseBlock, location);
node.clauses = createNodeArray(clauses);
return node;
}
export function createFor(initializer: ForInitializer, condition: Expression, incrementor: Expression, statement: Statement, location?: TextRange) {
const node = <ForStatement>createNode(SyntaxKind.ForStatement, location);
node.initializer = initializer;
node.condition = condition;
node.incrementor = incrementor;
node.statement = statement;
return node;
}
export function createLabel(label: string | Identifier, statement: Statement, location?: TextRange) {
const node = <LabeledStatement>createNode(SyntaxKind.LabeledStatement, location);
node.label = typeof label === "string" ? createIdentifier(label) : label;
node.statement = statement;
return node;
}
export function createDo(expression: Expression, statement: Statement, location?: TextRange) {
const node = <DoStatement>createNode(SyntaxKind.DoStatement, location);
node.expression = expression;
node.statement = statement;
return node;
}
export function createWhile(statement: Statement, expression: Expression, location?: TextRange) {
const node = <WhileStatement>createNode(SyntaxKind.WhileStatement, location);
node.statement = statement;
node.expression = expression;
return node;
}
export function createForIn(initializer: ForInitializer, expression: Expression, statement: Statement, location?: TextRange) {
const node = <ForInStatement>createNode(SyntaxKind.ForInStatement, location);
node.initializer = initializer;
node.expression = expression;
node.statement = statement;
return node;
}
export function createForOf(initializer: ForInitializer, expression: Expression, statement: Statement, location?: TextRange) {
const node = <ForOfStatement>createNode(SyntaxKind.ForOfStatement, location);
node.initializer = initializer;
node.expression = expression;
node.statement = statement;
return node;
}
export function createReturn(expression?: Expression, location?: TextRange): ReturnStatement {
const node = <ReturnStatement>createNode(SyntaxKind.ReturnStatement, location);
node.expression = expression;
return node;
}
export function createFunctionDeclaration(modifiers: Modifier[], asteriskToken: Node, name: string | Identifier, parameters: ParameterDeclaration[], body: Block, location?: TextRange, original?: Node) {
const node = <FunctionDeclaration>createNode(SyntaxKind.FunctionDeclaration, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.asteriskToken = asteriskToken;
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.typeParameters = undefined;
node.parameters = createNodeArray(parameters);
node.type = undefined;
node.body = body;
if (original) {
node.original = original;
}
return node;
}
export function createClassDeclaration(modifiers: Modifier[], name: Identifier, heritageClauses: HeritageClause[], members: ClassElement[], location?: TextRange) {
const node = <ClassDeclaration>createNode(SyntaxKind.ClassDeclaration, location);
node.decorators = undefined;
node.modifiers = modifiers ? createNodeArray(modifiers) : undefined;
node.name = name;
node.typeParameters = undefined;
node.heritageClauses = createNodeArray(heritageClauses);
node.members = createNodeArray(members);
return node;
}
export function createExportDefault(expression: Expression) {
const node = <ExportAssignment>createNode(SyntaxKind.ExportAssignment);
node.isExportEquals = false;
node.expression = expression;
return node;
}
export function createExportDeclaration(exportClause: NamedExports, moduleSpecifier?: Expression) {
const node = <ExportDeclaration>createNode(SyntaxKind.ExportDeclaration);
node.exportClause = exportClause;
node.moduleSpecifier = moduleSpecifier;
return node;
}
export function createNamedExports(elements: ExportSpecifier[]) {
const node = <NamedExports>createNode(SyntaxKind.NamedExports);
node.elements = createNodeArray(elements);
return node;
}
export function createExportSpecifier(name: string | Identifier, propertyName?: string | Identifier) {
const node = <ExportSpecifier>createNode(SyntaxKind.ExportSpecifier);
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.propertyName = typeof propertyName === "string" ? createIdentifier(propertyName) : propertyName;
return node;
}
// Clauses
export function createHeritageClause(token: SyntaxKind, types: ExpressionWithTypeArguments[], location?: TextRange) {
const node = <HeritageClause>createNode(SyntaxKind.HeritageClause, location);
node.token = token;
node.types = createNodeArray(types);
return node;
}
export function createCaseClause(expression: Expression, statements: Statement[], location?: TextRange) {
const node = <CaseClause>createNode(SyntaxKind.CaseClause, location);
node.expression = parenthesizeExpressionForList(expression);
node.statements = createNodeArray(statements);
return node;
}
// Property assignments
export function createPropertyAssignment(name: string | PropertyName, initializer: Expression, location?: TextRange) {
const node = <PropertyAssignment>createNode(SyntaxKind.PropertyAssignment, location);
node.name = typeof name === "string" ? createIdentifier(name) : name;
node.questionToken = undefined;
node.initializer = initializer !== undefined ? parenthesizeExpressionForList(initializer) : undefined;
return node;
}
// Transformation nodes
/**
* Creates a synthetic statement to act as a placeholder for a not-emitted statement in
* order to preserve comments.
*
* @param original The original statement.
*/
export function createNotEmittedStatement(original: Node) {
const node = <NotEmittedStatement>createNode(SyntaxKind.NotEmittedStatement, /*location*/ original);
node.original = original;
return node;
}
/**
* Creates a synthetic expression to act as a placeholder for a not-emitted expression in
* order to preserve comments or sourcemap positions.
*
* @param expression The inner expression to emit.
* @param original The original outer expression.
* @param location The location for the expression. Defaults to the positions from "original" if provided.
*/
export function createPartiallyEmittedExpression(expression: Expression, original?: Node, location?: TextRange) {
const node = <PartiallyEmittedExpression>createNode(SyntaxKind.PartiallyEmittedExpression, /*location*/ location || original);
node.expression = expression;
node.original = original;
return node;
}
// Compound nodes
export function createComma(left: Expression, right: Expression) {
return <Expression>createBinary(left, SyntaxKind.CommaToken, right);
}
export function createLessThan(left: Expression, right: Expression, location?: TextRange) {
return <Expression>createBinary(left, SyntaxKind.LessThanToken, right, location);
}
export function createAssignment(left: Expression, right: Expression, location?: TextRange) {
return createBinary(left, SyntaxKind.EqualsToken, right, location);
}
export function createStrictEquality(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.EqualsEqualsEqualsToken, right);
}
export function createStrictInequality(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.ExclamationEqualsEqualsToken, right);
}
export function createAdd(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.PlusToken, right);
}
export function createSubtract(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.MinusToken, right);
}
export function createPostfixIncrement(operand: Expression, location?: TextRange) {
return createPostfix(operand, SyntaxKind.PlusPlusToken, location);
}
export function createLogicalAnd(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.AmpersandAmpersandToken, right);
}
export function createLogicalOr(left: Expression, right: Expression) {
return createBinary(left, SyntaxKind.BarBarToken, right);
}
export function createLogicalNot(operand: Expression) {
return createPrefix(SyntaxKind.ExclamationToken, operand);
}
export function createVoidZero() {
return createVoid(createLiteral(0));
}
export function createImportDeclaration(importClause: ImportClause, moduleSpecifier?: Expression, location?: TextRange): ImportDeclaration {
const node = <ImportDeclaration>createNode(SyntaxKind.ImportDeclaration, location);
node.importClause = importClause;
node.moduleSpecifier = moduleSpecifier;
return node;
}
export function createImportClause(name: Identifier, namedBindings: NamedImportBindings, location?: TextRange): ImportClause {
const node = <ImportClause>createNode(SyntaxKind.ImportClause, location);
node.name = name;
node.namedBindings = namedBindings;
return node;
}
export function createNamedImports(elements: NodeArray<ImportSpecifier>, location?: TextRange): NamedImports {
const node = <NamedImports>createNode(SyntaxKind.NamedImports, location);
node.elements = elements;
return node;
}
export function createMemberAccessForPropertyName(target: Expression, memberName: PropertyName, location?: TextRange): MemberExpression {
if (isIdentifier(memberName)) {
return createPropertyAccess(target, getSynthesizedClone(memberName), location);
}
else if (isComputedPropertyName(memberName)) {
return createElementAccess(target, memberName.expression, location);
}
else {
return createElementAccess(target, memberName, location);
}
}
export function createRestParameter(name: string | Identifier) {
const node = createParameter(name, /*initializer*/ undefined);
node.dotDotDotToken = createSynthesizedNode(SyntaxKind.DotDotDotToken);
return node;
}
export function createFunctionCall(func: Expression, thisArg: Expression, argumentsList: Expression[], location?: TextRange) {
return createCall(
createPropertyAccess(func, "call"),
[
thisArg,
...argumentsList
],
location
);
}
export function createBreak(label?: Identifier, location?: TextRange): BreakStatement {
const node = <BreakStatement>createNode(SyntaxKind.BreakStatement, location);
if (label) {
node.label = label;
}
return node;
}
export function createContinue(label?: Identifier, location?: TextRange): BreakStatement {
const node = <ContinueStatement>createNode(SyntaxKind.ContinueStatement, location);
if (label) {
node.label = label;
}
return node;
}
export function createFunctionApply(func: Expression, thisArg: Expression, argumentsExpression: Expression, location?: TextRange) {
return createCall(
createPropertyAccess(func, "apply"),
[
thisArg,
argumentsExpression
],
location
);
}
export function createArraySlice(array: Expression, start?: number | Expression) {
const argumentsList: Expression[] = [];
if (start !== undefined) {
argumentsList.push(typeof start === "number" ? createLiteral(start) : start);
}
return createCall(createPropertyAccess(array, "slice"), argumentsList);
}
export function createArrayConcat(array: Expression, values: Expression[]) {
return createCall(
createPropertyAccess(array, "concat"),
values
);
}
export function createMathPow(left: Expression, right: Expression, location?: TextRange) {
return createCall(
createPropertyAccess(createIdentifier("Math"), "pow"),
[left, right],
location
);
}
function createReactNamespace(reactNamespace: string, parent: JsxOpeningLikeElement) {
// Create an identifier and give it a parent. This allows us to resolve the react
// namespace during emit.
const react = createIdentifier(reactNamespace || "React");
react.parent = parent;
return react;
}
export function createReactSpread(reactNamespace: string, segments: Expression[], parentElement: JsxOpeningLikeElement) {
return createCall(
createPropertyAccess(
createReactNamespace(reactNamespace, parentElement),
"__spread"
),
segments
);
}
export function createReactCreateElement(reactNamespace: string, tagName: Expression, props: Expression, children: Expression[], parentElement: JsxOpeningLikeElement, location: TextRange): LeftHandSideExpression {
const argumentsList = [tagName];
if (props) {
argumentsList.push(props);
}
if (children && children.length > 0) {
if (!props) {
argumentsList.push(createNull());
}
addNodes(argumentsList, children, /*startOnNewLine*/ children.length > 1);
}
return createCall(
createPropertyAccess(
createReactNamespace(reactNamespace, parentElement),
"createElement"
),
argumentsList,
location
);
}
// Helpers
export function createExtendsHelper(name: Identifier) {
return createCall(
createIdentifier("__extends"),
[
name,
createIdentifier("_super")
]
);
}
export function createParamHelper(expression: Expression, parameterOffset: number) {
return createCall(
createIdentifier("__param"),
[
createLiteral(parameterOffset),
expression
]
);
}
export function createMetadataHelper(metadataKey: string, metadataValue: Expression) {
return createCall(
createIdentifier("__metadata"),
[
createLiteral(metadataKey),
metadataValue
]
);
}
export function createDecorateHelper(decoratorExpressions: Expression[], target: Expression, memberName?: Expression, descriptor?: Expression) {
const argumentsArray: Expression[] = [];
argumentsArray.push(createArrayLiteral(decoratorExpressions, /*location*/ undefined, /*multiLine*/ true));
argumentsArray.push(target);
if (memberName) {
argumentsArray.push(memberName);
if (descriptor) {
argumentsArray.push(descriptor);
}
}
return createCall(createIdentifier("__decorate"), argumentsArray);
}
export function createAwaiterHelper(hasLexicalArguments: boolean, promiseConstructor: EntityName | Expression, body: Block) {
return createCall(
createIdentifier("__awaiter"),
[
createThis(),
hasLexicalArguments ? createIdentifier("arguments") : createVoidZero(),
promiseConstructor ? createExpressionFromEntityName(promiseConstructor) : createVoidZero(),
createFunctionExpression(
createNode(SyntaxKind.AsteriskToken),
/*name*/ undefined,
[],
body
)
]
);
}
export function createHasOwnProperty(target: LeftHandSideExpression, propertyName: Expression) {
return createCall(
createPropertyAccess(target, "hasOwnProperty"),
[propertyName]
);
}
function createPropertyDescriptor({ get, set, value, enumerable, configurable, writable }: PropertyDescriptorOptions, preferNewLine?: boolean, location?: TextRange, descriptorLocations?: PropertyDescriptorLocations) {
const properties: ObjectLiteralElement[] = [];
addPropertyAssignment(properties, "get", get, preferNewLine, descriptorLocations);
addPropertyAssignment(properties, "set", set, preferNewLine, descriptorLocations);
addPropertyAssignment(properties, "value", value, preferNewLine, descriptorLocations);
addPropertyAssignment(properties, "enumerable", enumerable, preferNewLine, descriptorLocations);
addPropertyAssignment(properties, "configurable", configurable, preferNewLine, descriptorLocations);
addPropertyAssignment(properties, "writable", writable, preferNewLine, descriptorLocations);
return createObjectLiteral(properties, location, preferNewLine);
}
function addPropertyAssignment(properties: ObjectLiteralElement[], name: string, value: boolean | Expression, preferNewLine: boolean, descriptorLocations?: PropertyDescriptorLocations) {
if (value !== undefined) {
const property = createPropertyAssignment(
name,
typeof value === "boolean" ? createLiteral(value) : value,
descriptorLocations ? descriptorLocations[name] : undefined
);
if (preferNewLine) {
startOnNewLine(property);
}
properties.push(property);
}
}
export interface PropertyDescriptorOptions {
get?: Expression;
set?: Expression;
value?: Expression;
enumerable?: boolean | Expression;
configurable?: boolean | Expression;
writable?: boolean | Expression;
}
export interface PropertyDescriptorLocations {
[key: string]: TextRange;
get?: TextRange;
set?: TextRange;
value?: TextRange;
enumerable?: TextRange;
configurable?: TextRange;
writable?: TextRange;
}
export function createObjectDefineProperty(target: Expression, memberName: Expression, descriptor: PropertyDescriptorOptions, preferNewLine?: boolean, location?: TextRange, descriptorLocations?: PropertyDescriptorLocations) {
return createCall(
createPropertyAccess(
createIdentifier("Object"),
"defineProperty"
),
[
target,
memberName,
createPropertyDescriptor(descriptor, preferNewLine, /*location*/ undefined, descriptorLocations)
],
location
);
}
function createObjectCreate(prototype: Expression) {
return createCall(
createPropertyAccess(createIdentifier("Object"), "create"),
[prototype]
);
}
function createGeti(target: LeftHandSideExpression) {
// name => super[name]
return createArrowFunction(
[createParameter("name")],