Merge branch 'transforms-flags' into transforms-transformer

This commit is contained in:
Ron Buckton 2016-02-12 15:10:57 -08:00
commit ceae78bea0
4 changed files with 525 additions and 368 deletions

View file

@ -1962,16 +1962,20 @@ namespace ts {
transformFlags = TransformFlags.AssertTypeScript;
}
}
break;
case SyntaxKind.ExpressionStatement:
// if (node.flags & NodeFlags.Generated) {
// let expression = (<ExpressionStatement>node).expression;
// if (expression.kind === SyntaxKind.CallExpression
// && (<CallExpression>expression).expression.kind === SyntaxKind.SuperKeyword) {
// transformFlags |= TransformFlags.AssertES6;
// }
// }
if (nodeIsSynthesized(node)) {
const expression = (<ExpressionStatement>node).expression;
if (nodeIsSynthesized(expression)
&& isCallExpression(expression)
&& expression.expression.kind === SyntaxKind.SuperKeyword) {
// A synthesized call to `super` should be transformed to a cleaner emit
// when transpiling to ES5/3.
transformFlags |= TransformFlags.AssertES6;
}
}
break;
@ -2082,17 +2086,16 @@ namespace ts {
case SyntaxKind.VariableDeclarationList:
// If a VariableDeclarationList is `let` or `const`, then it is ES6 syntax.
if (node.flags & NodeFlags.Let
|| node.flags & NodeFlags.Const) {
if (node.flags & NodeFlags.BlockScoped) {
transformFlags |= TransformFlags.AssertES6;
}
break;
case SyntaxKind.VariableStatement:
// If a VariableStatement is exported, then it is ES6 syntax.
// If a VariableStatement is exported, then it is either ES6 or TypeScript syntax.
if (node.flags & NodeFlags.Export) {
transformFlags |= TransformFlags.AssertES6;
transformFlags |= TransformFlags.AssertES6 | TransformFlags.AssertTypeScript;
}
break;
@ -2114,13 +2117,13 @@ namespace ts {
break;
case SyntaxKind.HeritageClause:
// An `extends` HertiageClause is ES6 syntax.
if ((<HeritageClause>node).token === SyntaxKind.ExtendsKeyword) {
// An `extends` HeritageClause is ES6 syntax.
transformFlags |= TransformFlags.AssertES6;
}
// An `implements` HeritageClause is TypeScript syntax.
else if ((<HeritageClause>node).token === SyntaxKind.ImplementsKeyword) {
else {
// An `implements` HeritageClause is TypeScript syntax.
Debug.assert((<HeritageClause>node).token === SyntaxKind.ImplementsKeyword);
transformFlags |= TransformFlags.AssertTypeScript;
}

View file

@ -6,33 +6,91 @@ 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): Node {
function createNode(kind: SyntaxKind, location?: TextRange, flags?: NodeFlags): Node {
const ConstructorForKind = kind === SyntaxKind.SourceFile
? (SourceFileConstructor || (SourceFileConstructor = objectAllocator.getSourceFileConstructor()))
: (NodeConstructor || (NodeConstructor = objectAllocator.getNodeConstructor()));
return location
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[], pos?: number, end?: number): NodeArray<T> {
const array = <NodeArray<T>>(elements || []);
array.pos = pos;
array.end = end;
export function createNodeArray<T extends Node>(elements?: T[], location?: TextRange): NodeArray<T> {
if (elements !== undefined) {
if (isNodeArray(elements)) {
return elements;
}
}
else {
elements = [];
}
const array = <NodeArray<T>>elements;
if (location !== undefined) {
array.pos = location.pos;
array.end = location.end;
}
else {
array.pos = -1;
array.end = -1;
}
array.arrayKind = ArrayKind.NodeArray;
return array;
}
export function createModifiersArray(elements?: Modifier[], pos?: number, end?: number): ModifiersArray {
const array = <ModifiersArray>(elements || []);
array.pos = pos;
array.end = end;
export function createModifiersArray(elements?: Modifier[], location?: TextRange): ModifiersArray {
let flags: NodeFlags;
if (elements !== undefined) {
if (isModifiersArray(elements)) {
return elements;
}
flags = 0;
for (const modifier of elements) {
flags |= modifierToFlag(modifier.kind);
}
}
else {
elements = [];
flags = 0;
}
const array = <ModifiersArray>elements;
if (location !== undefined) {
array.pos = location.pos;
array.end = location.end;
}
else {
array.pos = -1;
array.end = -1;
}
array.arrayKind = ArrayKind.ModifiersArray;
array.flags = 0;
array.flags = flags;
return array;
}
export function setModifiers<T extends Node>(node: T, modifiers: Modifier[]) {
if (modifiers !== undefined) {
const array = createModifiersArray(modifiers);
node.modifiers = array;
node.flags |= array.flags;
}
else {
node.modifiers = undefined;
}
return node;
}
export function createSynthesizedNode(kind: SyntaxKind, startsOnNewLine?: boolean): Node {
const node = <SynthesizedNode>createNode(kind, /*location*/ undefined);
node.startsOnNewLine = startsOnNewLine;
@ -40,11 +98,11 @@ namespace ts {
}
export function createSynthesizedNodeArray<T extends Node>(elements?: T[]): NodeArray<T> {
return createNodeArray(elements, /*pos*/ -1, /*end*/ -1);
return createNodeArray(elements, /*location*/ undefined);
}
export function createSynthesizedModifiersArray(elements?: Modifier[]): ModifiersArray {
return createModifiersArray(elements, /*pos*/ -1, /*end*/ -1);
return createModifiersArray(elements, /*location*/ undefined);
}
/**

View file

@ -1284,17 +1284,7 @@ namespace ts {
return false;
}
export function isLiteralKind(kind: SyntaxKind): boolean {
return SyntaxKind.FirstLiteralToken <= kind && kind <= SyntaxKind.LastLiteralToken;
}
export function isTextualLiteralKind(kind: SyntaxKind): boolean {
return kind === SyntaxKind.StringLiteral || kind === SyntaxKind.NoSubstitutionTemplateLiteral;
}
export function isTemplateLiteralKind(kind: SyntaxKind): boolean {
return SyntaxKind.FirstTemplateToken <= kind && kind <= SyntaxKind.LastTemplateToken;
}
export function isNodeDescendentOf(node: Node, ancestor: Node): boolean {
while (node) {
@ -1563,8 +1553,17 @@ namespace ts {
return node;
}
export function nodeStartsNewLexicalEnvironment(n: Node): boolean {
return isFunctionLike(n) || n.kind === SyntaxKind.ModuleDeclaration || n.kind === SyntaxKind.SourceFile;
export function nodeStartsNewLexicalEnvironment(node: Node): boolean {
const kind = node.kind;
return kind === SyntaxKind.Constructor
|| kind === SyntaxKind.FunctionExpression
|| kind === SyntaxKind.FunctionDeclaration
|| kind === SyntaxKind.ArrowFunction
|| kind === SyntaxKind.MethodDeclaration
|| kind === SyntaxKind.GetAccessor
|| kind === SyntaxKind.SetAccessor
|| kind === SyntaxKind.ModuleDeclaration
|| kind === SyntaxKind.SourceFile;
}
/**
@ -2659,23 +2658,111 @@ namespace ts {
// All node tests in the following list should *not* reference parent pointers so that
// they may be used with transformations.
export function isPropertyAccessExpression(node: Node): node is PropertyAccessExpression {
return node.kind === SyntaxKind.PropertyAccessExpression;
// Node Arrays
export function isNodeArray<T extends Node>(array: T[]): array is NodeArray<T> {
return (<NodeArray<T>>array).arrayKind === ArrayKind.NodeArray;
}
export function isElementAccessExpression(node: Node): node is ElementAccessExpression {
return node.kind === SyntaxKind.ElementAccessExpression;
export function isModifiersArray(array: Modifier[]): array is ModifiersArray {
return (<ModifiersArray>array).arrayKind === ArrayKind.ModifiersArray;
}
function isBindingPatternKind(kind: SyntaxKind) {
return kind === SyntaxKind.ArrayBindingPattern
|| kind === SyntaxKind.ObjectBindingPattern;
// Literals
export function isLiteralKind(kind: SyntaxKind): boolean {
return SyntaxKind.FirstLiteralToken <= kind && kind <= SyntaxKind.LastLiteralToken;
}
export function isBindingPattern(node: Node): node is BindingPattern {
return node && isBindingPatternKind(node.kind);
export function isTextualLiteralKind(kind: SyntaxKind): boolean {
return kind === SyntaxKind.StringLiteral || kind === SyntaxKind.NoSubstitutionTemplateLiteral;
}
export function isLiteralExpression(node: Node): node is LiteralExpression {
return isLiteralKind(node.kind);
}
// Pseudo-literals
export function isTemplateLiteralKind(kind: SyntaxKind): boolean {
return SyntaxKind.FirstTemplateToken <= kind && kind <= SyntaxKind.LastTemplateToken;
}
function isTemplateLiteralFragmentKind(kind: SyntaxKind) {
return kind === SyntaxKind.TemplateHead
|| kind === SyntaxKind.TemplateMiddle
|| kind === SyntaxKind.TemplateTail;
}
export function isTemplateLiteralFragment(node: Node): node is TemplateLiteralFragment {
return isTemplateLiteralFragmentKind(node.kind);
}
// Identifiers
export function isIdentifier(node: Node): node is Identifier {
return node.kind === SyntaxKind.Identifier;
}
// Keywords
export function isModifier(node: Node): node is Modifier {
return isModifierKind(node.kind);
}
// Names
export function isQualifiedName(node: Node): node is QualifiedName {
return node.kind === SyntaxKind.QualifiedName;
}
export function isComputedPropertyName(node: Node): node is ComputedPropertyName {
return node.kind === SyntaxKind.ComputedPropertyName;
}
export function isEntityName(node: Node): node is EntityName {
const kind = node.kind;
return kind === SyntaxKind.QualifiedName
|| kind === SyntaxKind.Identifier;
}
export function isPropertyName(node: Node): node is PropertyName {
const kind = node.kind;
return kind === SyntaxKind.Identifier
|| kind === SyntaxKind.StringLiteral
|| kind === SyntaxKind.NumericLiteral
|| kind === SyntaxKind.ComputedPropertyName;
}
export function isModuleName(node: Node): node is ModuleName {
const kind = node.kind;
return kind === SyntaxKind.Identifier
|| kind === SyntaxKind.StringLiteral;
}
export function isBindingName(node: Node): node is BindingName {
const kind = node.kind;
return kind === SyntaxKind.Identifier
|| kind === SyntaxKind.ObjectBindingPattern
|| kind === SyntaxKind.ArrayBindingPattern;
}
// Signature elements
export function isTypeParameter(node: Node): node is TypeParameterDeclaration {
return node.kind === SyntaxKind.TypeParameter;
}
export function isParameter(node: Node): node is ParameterDeclaration {
return node.kind === SyntaxKind.Parameter;
}
export function isDecorator(node: Node): node is Decorator {
return node.kind === SyntaxKind.Decorator;
}
// Type members
export function isClassElement(node: Node): node is ClassElement {
const kind = node.kind;
return kind === SyntaxKind.Constructor
@ -2687,37 +2774,80 @@ namespace ts {
|| kind === SyntaxKind.IndexSignature;
}
export function isQualifiedName(node: Node): node is QualifiedName {
return node.kind === SyntaxKind.QualifiedName;
export function isObjectLiteralElement(node: Node): node is ObjectLiteralElement {
const kind = node.kind;
return kind === SyntaxKind.PropertyAssignment
|| kind === SyntaxKind.ShorthandPropertyAssignment
|| kind === SyntaxKind.MethodDeclaration
|| kind === SyntaxKind.GetAccessor
|| kind === SyntaxKind.SetAccessor
|| kind === SyntaxKind.MissingDeclaration;
}
export function isLiteralExpression(node: Node): node is LiteralExpression {
return isLiteralKind(node.kind);
// Type
function isTypeNodeKind(kind: SyntaxKind) {
return (kind >= SyntaxKind.FirstTypeNode && kind <= SyntaxKind.LastTypeNode)
|| kind === SyntaxKind.AnyKeyword
|| kind === SyntaxKind.NumberKeyword
|| kind === SyntaxKind.BooleanKeyword
|| kind === SyntaxKind.StringKeyword
|| kind === SyntaxKind.SymbolKeyword
|| kind === SyntaxKind.VoidKeyword
|| kind === SyntaxKind.ExpressionWithTypeArguments;
}
function isEntityNameKind(kind: SyntaxKind) {
return kind === SyntaxKind.QualifiedName
|| kind === SyntaxKind.Identifier;
/**
* Node test that determines whether a node is a valid type node.
* This differs from the `isPartOfTypeNode` function which determines whether a node is *part*
* of a TypeNode.
*/
export function isTypeNode(node: Node): node is TypeNode {
return isTypeNodeKind(node.kind);
}
export function isEntityName(node: Node): node is EntityName {
return isEntityNameKind(node.kind);
// Binding patterns
export function isBindingPattern(node: Node): node is BindingPattern {
if (node) {
const kind = node.kind;
return kind === SyntaxKind.ArrayBindingPattern
|| kind === SyntaxKind.ObjectBindingPattern;
}
return false;
}
export function isIdentifier(node: Node): node is Identifier {
return node.kind === SyntaxKind.Identifier;
export function isBindingElement(node: Node): node is BindingElement {
return node.kind === SyntaxKind.BindingElement;
}
export function isComputedPropertyName(node: Node): node is ComputedPropertyName {
return node.kind === SyntaxKind.ComputedPropertyName;
// Expression
export function isPropertyAccessExpression(node: Node): node is PropertyAccessExpression {
return node.kind === SyntaxKind.PropertyAccessExpression;
}
export function isElementAccessExpression(node: Node): node is ElementAccessExpression {
return node.kind === SyntaxKind.ElementAccessExpression;
}
export function isBinaryExpression(node: Node): node is BinaryExpression {
return node.kind === SyntaxKind.BinaryExpression;
}
export function isShortHandPropertyAssignment(node: Node): node is ShorthandPropertyAssignment {
return node.kind === SyntaxKind.ShorthandPropertyAssignment;
export function isCallExpression(node: Node): node is CallExpression {
return node.kind === SyntaxKind.CallExpression;
}
export function isTemplate(node: Node): node is Template {
const kind = node.kind;
return kind === SyntaxKind.TemplateExpression
|| kind === SyntaxKind.NoSubstitutionTemplateLiteral;
}
export function isExpressionWithTypeArguments(node: Node): node is ExpressionWithTypeArguments {
return node.kind === SyntaxKind.ExpressionWithTypeArguments;
}
function isLeftHandSideExpressionKind(kind: SyntaxKind) {
@ -2744,7 +2874,7 @@ namespace ts {
|| kind === SyntaxKind.ThisKeyword
|| kind === SyntaxKind.TrueKeyword
|| kind === SyntaxKind.SuperKeyword;
}
}
export function isLeftHandSideExpression(node: Node): node is LeftHandSideExpression {
return isLeftHandSideExpressionKind(node.kind);
@ -2780,32 +2910,70 @@ namespace ts {
return isExpressionKind(node.kind);
}
export function isDecorator(node: Node): node is Decorator {
return node.kind === SyntaxKind.Decorator;
// Misc
export function isTemplateSpan(node: Node): node is TemplateSpan {
return node.kind === SyntaxKind.TemplateSpan;
}
export function isModifier(node: Node): node is Modifier {
return isModifierKind(node.kind);
// Element
export function isBlock(node: Node): node is Block {
return node.kind === SyntaxKind.Block;
}
function isTypeNodeKind(kind: SyntaxKind) {
return (kind >= SyntaxKind.FirstTypeNode && kind <= SyntaxKind.LastTypeNode)
|| kind === SyntaxKind.AnyKeyword
|| kind === SyntaxKind.NumberKeyword
|| kind === SyntaxKind.BooleanKeyword
|| kind === SyntaxKind.StringKeyword
|| kind === SyntaxKind.SymbolKeyword
|| kind === SyntaxKind.VoidKeyword
|| kind === SyntaxKind.ExpressionWithTypeArguments;
export function isConciseBody(node: Node): node is ConciseBody {
return isBlock(node)
|| isExpression(node);
}
/**
* Node test that determines whether a node is a valid type node.
* This differs from the `isPartOfTypeNode` function which determines whether a node is *part*
* of a TypeNode.
*/
export function isTypeNode(node: Node): node is TypeNode {
return isTypeNodeKind(node.kind);
export function isFunctionBody(node: Node): node is FunctionBody {
return isBlock(node);
}
export function isForInitializer(node: Node): node is ForInitializer {
return isVariableDeclarationList(node)
|| isExpression(node);
}
export function isVariableDeclaration(node: Node): node is VariableDeclaration {
return node.kind === SyntaxKind.VariableDeclaration;
}
export function isVariableDeclarationList(node: Node): node is VariableDeclarationList {
return node.kind === SyntaxKind.VariableDeclarationList;
}
export function isCaseBlock(node: Node): node is CaseBlock {
return node.kind === SyntaxKind.CaseBlock;
}
export function isModuleBody(node: Node): node is ModuleBody {
const kind = node.kind;
return kind === SyntaxKind.ModuleBlock
|| kind === SyntaxKind.ModuleDeclaration;
}
export function isImportClause(node: Node): node is ImportClause {
return node.kind === SyntaxKind.ImportClause;
}
export function isNamedImportBindings(node: Node): node is NamedImportBindings {
const kind = node.kind;
return kind === SyntaxKind.NamedImports
|| kind === SyntaxKind.NamespaceImport;
}
export function isImportSpecifier(node: Node): node is ImportSpecifier {
return node.kind === SyntaxKind.ImportSpecifier;
}
export function isNamedExports(node: Node): node is NamedExports {
return node.kind === SyntaxKind.NamedExports;
}
export function isExportSpecifier(node: Node): node is ExportSpecifier {
return node.kind === SyntaxKind.ExportSpecifier;
}
function isDeclarationKind(kind: SyntaxKind) {
@ -2839,10 +3007,6 @@ namespace ts {
|| kind === SyntaxKind.VariableDeclaration;
}
export function isDeclaration(node: Node): node is Declaration {
return isDeclarationKind(node.kind);
}
function isDeclarationStatementKind(kind: SyntaxKind) {
return kind === SyntaxKind.FunctionDeclaration
|| kind === SyntaxKind.MissingDeclaration
@ -2856,10 +3020,6 @@ namespace ts {
|| kind === SyntaxKind.ExportAssignment;
}
export function isDeclarationStatement(node: Node): node is DeclarationStatement {
return isDeclarationStatementKind(node.kind);
}
function isStatementKindButNotDeclarationKind(kind: SyntaxKind) {
return kind === SyntaxKind.BreakStatement
|| kind === SyntaxKind.ContinueStatement
@ -2881,6 +3041,14 @@ namespace ts {
|| kind === SyntaxKind.WithStatement;
}
export function isDeclaration(node: Node): node is Declaration {
return isDeclarationKind(node.kind);
}
export function isDeclarationStatement(node: Node): node is DeclarationStatement {
return isDeclarationStatementKind(node.kind);
}
/**
* Determines whether the node is a statement that is not also a declaration
*/
@ -2888,171 +3056,22 @@ namespace ts {
return isStatementKindButNotDeclarationKind(node.kind);
}
function isStatementKind(kind: SyntaxKind) {
export function isStatement(node: Node): node is Statement {
const kind = node.kind;
return isStatementKindButNotDeclarationKind(kind)
|| isDeclarationStatementKind(kind);
}
export function isStatement(node: Node): node is Statement {
return isStatementKind(node.kind);
}
function isPropertyNameKind(kind: SyntaxKind) {
return kind === SyntaxKind.Identifier
|| kind === SyntaxKind.StringLiteral
|| kind === SyntaxKind.NumericLiteral
|| kind === SyntaxKind.ComputedPropertyName;
}
export function isPropertyName(node: Node): node is PropertyName {
return isPropertyNameKind(node.kind);
}
function isConciseBodyKind(kind: SyntaxKind) {
return kind === SyntaxKind.Block
|| isExpressionKind(kind);
}
export function isConciseBody(node: Node): node is ConciseBody {
return isConciseBodyKind(node.kind);
}
export function isTypeParameter(node: Node): node is TypeParameterDeclaration {
return node.kind === SyntaxKind.TypeParameter;
}
export function isParameter(node: Node): node is ParameterDeclaration {
return node.kind === SyntaxKind.Parameter;
}
export function isBindingElement(node: Node): node is BindingElement {
return node.kind === SyntaxKind.BindingElement;
}
function isObjectLiteralElementKind(kind: SyntaxKind) {
return kind === SyntaxKind.PropertyAssignment
|| kind === SyntaxKind.ShorthandPropertyAssignment
|| kind === SyntaxKind.MethodDeclaration
|| kind === SyntaxKind.GetAccessor
|| kind === SyntaxKind.SetAccessor
|| kind === SyntaxKind.MissingDeclaration;
}
export function isObjectLiteralElement(node: Node): node is ObjectLiteralElement {
return isObjectLiteralElementKind(node.kind);
}
function isTemplateKind(kind: SyntaxKind) {
return kind === SyntaxKind.TemplateExpression
|| kind === SyntaxKind.NoSubstitutionTemplateLiteral;
}
export function isTemplate(node: Node): node is Template {
return isTemplateKind(node.kind);
}
function isTemplateLiteralFragmentKind(kind: SyntaxKind) {
return kind === SyntaxKind.TemplateHead
|| kind === SyntaxKind.TemplateMiddle
|| kind === SyntaxKind.TemplateTail;
}
export function isTemplateLiteralFragment(node: Node): node is TemplateLiteralFragment {
return isTemplateLiteralFragmentKind(node.kind);
}
export function isTemplateSpan(node: Node): node is TemplateSpan {
return node.kind === SyntaxKind.TemplateSpan;
}
export function isHeritageClause(node: Node): node is HeritageClause {
return node.kind === SyntaxKind.HeritageClause;
}
export function isVariableDeclarationList(node: Node): node is VariableDeclarationList {
return node.kind === SyntaxKind.VariableDeclarationList;
}
function isForInitializerKind(kind: SyntaxKind) {
return kind === SyntaxKind.VariableDeclarationList
|| isExpressionKind(kind);
}
export function isForInitializer(node: Node): node is ForInitializer {
return isForInitializerKind(node.kind);
}
export function isCaseBlock(node: Node): node is CaseBlock {
return node.kind === SyntaxKind.CaseBlock;
}
export function isBlock(node: Node): node is Block {
return node.kind === SyntaxKind.Block;
}
export function isCatchClause(node: Node): node is CatchClause {
return node.kind === SyntaxKind.CatchClause;
}
export function isVariableDeclaration(node: Node): node is VariableDeclaration {
return node.kind === SyntaxKind.VariableDeclaration;
}
export function isEnumMember(node: Node): node is EnumMember {
return node.kind === SyntaxKind.EnumMember;
}
function isModuleNameKind(kind: SyntaxKind) {
return kind === SyntaxKind.Identifier
|| kind === SyntaxKind.StringLiteral;
}
export function isModuleName(node: Node): node is ModuleName {
return isModuleNameKind(node.kind);
}
function isCaseOrDefaultClauseKind(kind: SyntaxKind) {
return kind === SyntaxKind.CaseClause
|| kind === SyntaxKind.DefaultClause;
}
export function isCaseOrDefaultClause(node: Node): node is CaseOrDefaultClause {
return isCaseOrDefaultClauseKind(node.kind);
}
function isModuleReferenceKind(kind: SyntaxKind) {
return kind === SyntaxKind.ExternalModuleReference
|| isEntityNameKind(kind);
}
// Module references
export function isModuleReference(node: Node): node is ModuleReference {
return isModuleReferenceKind(node.kind);
const kind = node.kind;
return kind === SyntaxKind.ExternalModuleReference
|| kind === SyntaxKind.QualifiedName
|| kind === SyntaxKind.Identifier;
}
export function isImportClause(node: Node): node is ImportClause {
return node.kind === SyntaxKind.ImportClause;
}
function isNamedImportBindingsKind(kind: SyntaxKind) {
return kind === SyntaxKind.NamedImports
|| kind === SyntaxKind.NamespaceImport;
}
export function isNamedImportBindings(node: Node): node is NamedImportBindings {
return isNamedImportBindingsKind(node.kind);
}
export function isImportSpecifier(node: Node): node is ImportSpecifier {
return node.kind === SyntaxKind.ImportSpecifier;
}
export function isNamedExports(node: Node): node is NamedExports {
return node.kind === SyntaxKind.NamedExports;
}
export function isExportSpecifier(node: Node): node is ExportSpecifier {
return node.kind === SyntaxKind.ExportSpecifier;
}
// JSX
export function isJsxOpeningElement(node: Node): node is JsxOpeningElement {
return node.kind === SyntaxKind.JsxOpeningElement;
@ -3062,55 +3081,56 @@ namespace ts {
return node.kind === SyntaxKind.JsxClosingElement;
}
function isJsxChildKind(kind: SyntaxKind) {
export function isJsxChild(node: Node): node is JsxChild {
const kind = node.kind;
return kind === SyntaxKind.JsxElement
|| kind === SyntaxKind.JsxExpression
|| kind === SyntaxKind.JsxSelfClosingElement
|| kind === SyntaxKind.JsxText;
}
export function isJsxChild(node: Node): node is JsxChild {
return isJsxChildKind(node.kind);
}
function isJsxAttributeLikeKind(kind: SyntaxKind) {
export function isJsxAttributeLike(node: Node): node is JsxAttributeLike {
const kind = node.kind;
return kind === SyntaxKind.JsxAttribute
|| kind === SyntaxKind.JsxSpreadAttribute;
}
export function isJsxAttributeLike(node: Node): node is JsxAttributeLike {
return isJsxAttributeLikeKind(node.kind);
// Clauses
export function isCaseOrDefaultClause(node: Node): node is CaseOrDefaultClause {
const kind = node.kind;
return kind === SyntaxKind.CaseClause
|| kind === SyntaxKind.DefaultClause;
}
export function isExpressionWithTypeArguments(node: Node): node is ExpressionWithTypeArguments {
return node.kind === SyntaxKind.ExpressionWithTypeArguments;
export function isHeritageClause(node: Node): node is HeritageClause {
return node.kind === SyntaxKind.HeritageClause;
}
function isModuleBodyKind(kind: SyntaxKind) {
return kind === SyntaxKind.ModuleBlock
|| kind === SyntaxKind.ModuleDeclaration;
export function isCatchClause(node: Node): node is CatchClause {
return node.kind === SyntaxKind.CatchClause;
}
export function isModuleBody(node: Node): node is ModuleBody {
return isModuleBodyKind(node.kind);
// Property assignments
export function isShortHandPropertyAssignment(node: Node): node is ShorthandPropertyAssignment {
const kind = node.kind;
return kind === SyntaxKind.ShorthandPropertyAssignment;
}
function isBindingNameKind(kind: SyntaxKind) {
return kind === SyntaxKind.Identifier
|| isBindingPatternKind(kind);
// Enum
export function isEnumMember(node: Node): node is EnumMember {
return node.kind === SyntaxKind.EnumMember;
}
export function isBindingName(node: Node): node is BindingName {
return isBindingNameKind(node.kind);
}
// Synthesized
export function isNodeArrayNode<T extends Node>(node: Node): node is NodeArrayNode<T> {
return node.kind === SyntaxKind.NodeArrayNode;
}
export function isModifiersArray(array: NodeArray<Node>): array is ModifiersArray {
return array.arrayKind === ArrayKind.ModifiersArray;
}
}
namespace ts {

View file

@ -2,6 +2,7 @@
/* @internal */
namespace ts {
export type OneOrMore<T extends Node> = T | NodeArrayNode<T>;
/**
* Describes an edge of a Node, used when traversing a syntax tree.
*/
@ -469,10 +470,10 @@ namespace ts {
* @param node The Node to visit.
* @param visitor The callback used to visit the Node.
* @param test A callback to execute to verify the Node is valid.
* @param lift A callback to execute to lift a NodeArrayNode into a valid Node.
* @param optional A value indicating whether the Node is optional.
* @param optional An optional value indicating whether the Node is itself optional.
* @param lift An optional callback to execute to lift a NodeArrayNode into a valid Node.
*/
export function visitNode<T extends Node>(node: T, visitor: (node: Node) => Node, test?: (node: Node) => boolean, lift?: (node: NodeArray<Node>) => T, optional?: boolean): T {
export function visitNode<T extends Node>(node: T, visitor: (node: Node) => Node, test: (node: Node) => boolean, optional?: boolean, lift?: (node: NodeArray<Node>) => T): T {
if (node === undefined) {
return undefined;
}
@ -499,55 +500,56 @@ namespace ts {
* @param nodes The NodeArray to visit.
* @param visitor The callback used to visit a Node.
* @param test A node test to execute for each node.
* @param start An optional value indicating the starting offset at which to start visiting.
* @param count An optional value indicating the maximum number of nodes to visit.
*/
export function visitNodes<T extends Node, TArray extends NodeArray<T>>(nodes: TArray, visitor: (node: Node) => Node, test?: (node: Node) => boolean): TArray {
export function visitNodes<T extends Node, TArray extends NodeArray<T>>(nodes: TArray, visitor: (node: Node) => Node, test: (node: Node) => boolean, start?: number, count?: number): TArray {
if (nodes === undefined) {
return undefined;
}
let updated: NodeArray<T> | ModifiersArray;
for (let i = 0, len = nodes.length; i < len; i++) {
const node = nodes[i];
if (node === undefined) {
continue;
}
let updated: T[];
const visited = visitor(node);
// Ensure start and count have valid values
const length = nodes.length;
if (start === undefined || start < 0) {
start = 0;
}
if (count === undefined || count > length - start) {
count = length - start;
}
// If we are not visiting all of the original nodes, we must always create a new array.
if (start > 0 || count < length) {
updated = [];
}
// Visit each original node.
for (let i = 0; i < count; i++) {
const node = nodes[i + start];
const visited = node && <OneOrMore<T>>visitor(node);
if (updated !== undefined || visited === undefined || visited !== node) {
if (updated === undefined) {
updated = isModifiersArray(nodes)
? createModifiersArray(nodes.slice(0, i), nodes.pos, nodes.end)
: createNodeArray<T>(nodes.slice(0, i), nodes.pos, nodes.end);
// Ensure we have a copy of `nodes`, up to the current index.
updated = nodes.slice(0, i);
}
if (visited === undefined) {
continue;
if (visited !== node) {
aggregateTransformFlags(visited);
}
if (isNodeArrayNode<T>(visited)) {
spreadNodeArrayNode(visited, updated, test);
}
else if (visited !== undefined) {
Debug.assert(test === undefined || test(visited), "Wrong node type after visit.");
if (visited !== node) {
aggregateTransformFlags(visited);
}
updated.push(<T>visited);
}
addNode(updated, visited, test);
}
}
if (updated && isModifiersArray(updated)) {
let flags: NodeFlags = 0;
for (const node of updated) {
flags |= modifierToFlag(node.kind);
}
updated.flags = flags;
if (updated !== undefined) {
return <TArray>(isModifiersArray(nodes)
? createModifiersArray(updated, nodes)
: createNodeArray(updated, nodes));
}
return <TArray>updated || nodes;
return nodes;
}
/**
@ -555,36 +557,40 @@ namespace ts {
*
* @param node The Node whose children will be visited.
* @param visitor The callback used to visit each child.
* @param environment An optional lexical environment context for the visitor.
* @param context A lexical environment context for the visitor.
*/
export function visitEachChild<T extends Node>(node: T, visitor: (node: Node) => Node, environment?: LexicalEnvironment): T {
export function visitEachChild<T extends Node>(node: T, visitor: (node: Node) => Node, context: LexicalEnvironment): T;
export function visitEachChild<T extends Node>(node: T & Map<any>, visitor: (node: Node) => Node, context: LexicalEnvironment): T {
if (node === undefined) {
return undefined;
}
const isNewLexicalEnvironment = environment !== undefined && nodeStartsNewLexicalEnvironment(node);
let updated: T & Map<any>;
// If this node starts a new lexical environment, start a new lexical environment on the context.
const isNewLexicalEnvironment = nodeStartsNewLexicalEnvironment(node);
if (isNewLexicalEnvironment) {
environment.startLexicalEnvironment();
context.startLexicalEnvironment();
}
let modifiers: NodeFlags;
let updated: T & Map<any>;
const edgeTraversalPath = nodeEdgeTraversalMap[node.kind];
if (edgeTraversalPath) {
for (const edge of edgeTraversalPath) {
const value = (<Map<any>>node)[edge.name];
const value = <Node | NodeArray<Node>>node[edge.name];
if (value !== undefined) {
const visited = visitEdge(edge, value, visitor);
if (updated !== undefined || visited !== value) {
if (updated === undefined) {
updated = cloneNode(node, /*location*/ undefined, node.flags & ~NodeFlags.Modifier, /*parent*/ undefined, /*original*/ node);
updated = cloneNode(node, /*location*/ node, node.flags & ~NodeFlags.Modifier, /*parent*/ undefined, /*original*/ node);
}
updated[edge.name] = visited;
}
if (visited && isArray(visited) && isModifiersArray(visited)) {
modifiers = visited.flags;
if (visited && isArray(visited) && isModifiersArray(visited)) {
updated[edge.name] = visited;
updated.flags |= visited.flags;
}
else {
updated[edge.name] = visited;
}
}
}
}
@ -593,14 +599,11 @@ namespace ts {
if (updated === undefined) {
updated = node;
}
else if (modifiers) {
updated.flags |= modifiers;
}
if (isNewLexicalEnvironment) {
const declarations = environment.endLexicalEnvironment();
const declarations = context.endLexicalEnvironment();
if (declarations !== undefined && declarations.length > 0) {
updated = <T>mergeLexicalEnvironment(updated, declarations, /*nodeIsMutable*/ updated !== node);
updated = <T>mergeLexicalEnvironment(updated, declarations);
}
}
@ -620,104 +623,177 @@ namespace ts {
*/
function visitEdge(edge: NodeEdge, value: Node | NodeArray<Node>, visitor: (node: Node) => Node) {
return isArray(value)
? visitNodes(<NodeArray<Node>>value, visitor, edge.test)
: visitNode(<Node>value, visitor, edge.test, edge.lift, edge.optional);
? visitNodes(<NodeArray<Node>>value, visitor, edge.test, /*start*/ undefined, /*count*/ undefined)
: visitNode(<Node>value, visitor, edge.test, edge.optional, edge.lift);
}
/**
* Spreads a NodeArrayNode into a NodeArray.
* Appends a node to an array.
*
* @param source The source NodeArrayNode.
* @param dest The destination NodeArray.
* @param to The destination array.
* @param from The source Node or NodeArrayNode.
* @param test The node test used to validate each node.
*/
function spreadNodeArrayNode<T extends Node>(source: NodeArrayNode<T>, dest: NodeArray<T>, test: (node: Node) => boolean) {
for (const element of source.nodes) {
if (element === undefined) {
continue;
export function addNode<T extends Node>(to: T[], from: OneOrMore<T>, test?: (node: Node) => boolean) {
if (to !== undefined && from !== undefined) {
if (isNodeArrayNode(from)) {
addNodes(to, from.nodes, test);
}
else {
Debug.assert(test === undefined || test(from), "Wrong node type after visit.");
to.push(from);
}
}
}
Debug.assert(test === undefined || test(element), "Wrong node type after visit.");
dest.push(element);
/**
* Appends an array of nodes to an array.
*
* @param to The destination NodeArray.
* @param from The source array of Node or NodeArrayNode.
* @param test The node test used to validate each node.
*/
export function addNodes<T extends Node>(to: T[], from: OneOrMore<T>[], test?: (node: Node) => boolean) {
if (to !== undefined && from !== undefined) {
for (const node of from) {
addNode(to, node, test);
}
}
}
/**
* Merge generated declarations of a lexical environment.
*
* @param node The source node.
* @param declarations The generated lexical declarations.
*/
function mergeLexicalEnvironment(node: Node, declarations: Statement[], nodeIsMutable: boolean) {
const mutableNode = nodeIsMutable ? node : cloneNode(node, /*location*/ node, node.flags, /*parent*/ undefined, /*original*/ node);
function mergeLexicalEnvironment(node: Node, declarations: Statement[]): Node {
switch (node.kind) {
case SyntaxKind.SourceFile:
mergeSourceFileLexicalEnvironment(<SourceFile>mutableNode, declarations);
break;
return mergeSourceFileLexicalEnvironment(<SourceFile>node, declarations);
case SyntaxKind.ModuleDeclaration:
mergeModuleDeclarationLexicalEnvironment(<ModuleDeclaration>mutableNode, declarations);
break;
return mergeModuleDeclarationLexicalEnvironment(<ModuleDeclaration>node, declarations);
case SyntaxKind.FunctionDeclaration:
case SyntaxKind.FunctionExpression:
case SyntaxKind.ArrowFunction:
case SyntaxKind.MethodDeclaration:
case SyntaxKind.GetAccessor:
case SyntaxKind.SetAccessor:
case SyntaxKind.Constructor:
mergeFunctionLikeLexicalEnvironment(<FunctionLikeDeclaration>mutableNode, declarations);
break;
case SyntaxKind.ModuleBlock:
case SyntaxKind.Block:
mergeBlockLexicalEnvironment(<Block>mutableNode, declarations);
break;
case SyntaxKind.ArrowFunction:
return mergeFunctionLikeLexicalEnvironment(<FunctionLikeDeclaration>node, declarations);
}
return mutableNode;
Debug.fail("Node is not a valid lexical environment.");
}
/**
* Merge generated declarations of a lexical environment into a SourceFile.
*
* @param node The SourceFile node.
* @param declarations The generated lexical declarations.
*/
function mergeSourceFileLexicalEnvironment(node: SourceFile, declarations: Statement[]) {
node.statements = mergeStatements(node.statements, declarations);
export function mergeSourceFileLexicalEnvironment(node: SourceFile, declarations: Statement[]) {
if (declarations !== undefined && declarations.length) {
const mutableNode = cloneNode(node, /*location*/ node, node.flags, /*parent*/ undefined, /*original*/ node);
mutableNode.statements = mergeStatements(mutableNode.statements, declarations);
return mutableNode;
}
return node;
}
/**
* Merge generated declarations of a lexical environment into a ModuleDeclaration.
*
* @param node The ModuleDeclaration node.
* @param declarations The generated lexical declarations.
*/
function mergeModuleDeclarationLexicalEnvironment(node: ModuleDeclaration, declarations: Statement[]) {
export function mergeModuleDeclarationLexicalEnvironment(node: ModuleDeclaration, declarations: Statement[]) {
Debug.assert(node.body.kind === SyntaxKind.ModuleBlock);
node.body = <ModuleBlock>mergeLexicalEnvironment(node.body, declarations, /*nodeIsMutable*/ false);
if (declarations !== undefined && declarations.length) {
const mutableNode = cloneNode(node, /*location*/ node, node.flags, /*parent*/ undefined, /*original*/ node);
mutableNode.body = mergeBlockLexicalEnvironment(<ModuleBlock>node.body, declarations);
return mutableNode;
}
return node;
}
/**
* Merge generated declarations of a lexical environment into a FunctionLikeDeclaration.
*
* @param node The function-like node.
* @param declarations The generated lexical declarations.
*/
function mergeFunctionLikeLexicalEnvironment(node: FunctionLikeDeclaration, declarations: Statement[]) {
Debug.assert(node.body !== undefined);
if (node.body.kind === SyntaxKind.Block) {
node.body = <Block>mergeLexicalEnvironment(node.body, declarations, /*nodeIsMutable*/ false);
if (declarations !== undefined && declarations.length) {
const mutableNode = cloneNode(node, /*location*/ node, node.flags, /*parent*/ undefined, /*original*/ node);
mutableNode.body = mergeConciseBodyLexicalEnvironment(mutableNode.body, declarations);
return mutableNode;
}
else {
node.body = createBlock([
createReturn(<Expression>node.body),
...declarations
]);
return node;
}
/**
* Merges generated lexical declarations into the FunctionBody of a non-arrow function-like declaration.
*
* @param node The ConciseBody of an arrow function.
* @param declarations The lexical declarations to merge.
*/
export function mergeFunctionBodyLexicalEnvironment(body: FunctionBody, declarations: Statement[]) {
if (declarations !== undefined && declarations.length > 0) {
return mergeBlockLexicalEnvironment(body, declarations);
}
return body;
}
/**
* Merges generated lexical declarations into the ConciseBody of an ArrowFunction.
*
* @param node The ConciseBody of an arrow function.
* @param declarations The lexical declarations to merge.
*/
export function mergeConciseBodyLexicalEnvironment(body: ConciseBody, declarations: Statement[]) {
if (declarations !== undefined && declarations.length > 0) {
if (isBlock(body)) {
return mergeBlockLexicalEnvironment(body, declarations);
}
else {
return createBlock([
createReturn(body),
...declarations
]);
}
}
return body;
}
/**
* Merge generated declarations of a lexical environment into a FunctionBody or ModuleBlock.
*
* @param node The block into which to merge lexical declarations.
* @param declarations The lexical declarations to merge.
*/
function mergeBlockLexicalEnvironment(node: FunctionBody | ModuleBlock, declarations: Statement[]) {
node.statements = mergeStatements(node.statements, declarations);
function mergeBlockLexicalEnvironment<T extends Block>(node: T, declarations: Statement[]) {
const mutableNode = cloneNode(node, /*location*/ node, node.flags, /*parent*/ undefined, /*original*/ node);
mutableNode.statements = mergeStatements(node.statements, declarations);
return mutableNode;
}
/**
* Merge generated declarations of a lexical environment into a NodeArray of Statement.
*
* @param statements The node array to concatentate with the supplied lexical declarations.
* @param declarations The lexical declarations to merge.
*/
function mergeStatements(statements: NodeArray<Statement>, declarations: Statement[]) {
return createNodeArray(statements.concat(declarations), statements.pos, statements.end);
return createNodeArray(concatenate(statements, declarations), /*location*/ statements);
}
/**