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1246 lines (1012 loc) · 63.5 KB
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///<reference path='references.ts' />
module TypeScript.Emitter1 {
function callSignature(parameter: ParameterSyntax): CallSignatureSyntax {
return CallSignatureSyntax.create1().withParameterList(
ParameterListSyntax.create1().withParameter(parameter));
}
// Class that makes sure we're not reusing tokens in a tree
class EnsureTokenUniquenessRewriter extends SyntaxRewriter {
private tokenTable = Collections.createHashTable(Collections.DefaultHashTableCapacity, Collections.identityHashCode);
public visitToken(token: ISyntaxToken): ISyntaxToken {
if (this.tokenTable.containsKey(token)) {
// already saw this token. so clone it and return a new one. so that the tree stays
// unique/
return token.clone();
}
this.tokenTable.add(token, token);
return token;
}
}
class EmitterImpl extends SyntaxRewriter {
private space: ISyntaxTriviaList;
private newLine: ISyntaxTriviaList;
private factory: Syntax.IFactory = Syntax.normalModeFactory;
// A copy of the syntax tree we keep around so that we can determine where tokens were
// before we started moving them around.
private syntaxTreeCopy: SyntaxTree;
constructor(syntaxTree: SyntaxTree, private options: FormattingOptions) {
super();
this.options = options || FormattingOptions.defaultOptions;
// TODO: use proper new line based on options.
this.space = Syntax.spaceTriviaList;
this.newLine = Syntax.triviaList([Syntax.carriageReturnLineFeedTrivia]);
this.syntaxTreeCopy = Parser.parse(syntaxTree.fileName(), SimpleText.fromString(syntaxTree.sourceUnit().fullText()), syntaxTree.isDeclaration(), syntaxTree.parseOptions());
}
private columnForStartOfToken(token: ISyntaxToken): number {
return Indentation.columnForStartOfTokenAtPosition(this.syntaxTreeCopy, token.fullStart(), this.options);
}
private columnForEndOfToken(token: ISyntaxToken): number {
return Indentation.columnForEndOfTokenAtPosition(this.syntaxTreeCopy, token.fullStart(), this.options);
}
private indentationTrivia(column: number): ISyntaxTriviaList {
var triviaArray = column === 0 ? null : [Indentation.indentationTrivia(column, this.options)];
return Syntax.triviaList(triviaArray);
}
private indentationTriviaForStartOfNode(node: ISyntaxNodeOrToken): ISyntaxTriviaList {
var column = this.columnForStartOfToken(node.firstToken());
return this.indentationTrivia(column);
}
private changeIndentation<T extends ISyntaxNode>(node: T, changeFirstToken: boolean, indentAmount: number): T {
if (indentAmount === 0) {
return node;
}
else if (indentAmount > 0) {
return <T><any>SyntaxIndenter.indentNode(node,
/*indentFirstToken:*/ changeFirstToken, /*indentAmount:*/ indentAmount,
this.options);
}
else {
// Dedent the node. But don't allow it go before the minimum indent amount.
return <T><any>SyntaxDedenter.dedentNode(node,
/*dedentFirstToken:*/ changeFirstToken, /*dedentAmount:*/-indentAmount,
/*minimumColumn:*/this.options.indentSpaces, this.options);
}
}
private withNoTrivia(token: ISyntaxToken): ISyntaxToken {
return token.withLeadingTrivia(Syntax.emptyTriviaList).withTrailingTrivia(Syntax.emptyTriviaList);
}
public visitSourceUnit(node: SourceUnitSyntax): SourceUnitSyntax {
return node.withModuleElements(Syntax.list(
this.convertModuleElements(node.moduleElements)));
}
private convertModuleElements(list: ISyntaxList<IModuleElementSyntax>): IModuleElementSyntax[] {
var moduleElements: IModuleElementSyntax[] = [];
for (var i = 0, n = list.childCount(); i < n; i++) {
var moduleElement = list.childAt(i);
var converted = this.visitNode(<SyntaxNode>moduleElement);
if (converted !== null) {
if (ArrayUtilities.isArray(converted)) {
moduleElements.push.apply(moduleElements, converted);
}
else {
moduleElements.push(<IModuleElementSyntax>converted);
}
}
}
return moduleElements;
}
private static splitModuleName(name: INameSyntax): ISyntaxToken[] {
var result: ISyntaxToken[] = [];
while (true) {
if (name.kind() === SyntaxKind.IdentifierName) {
result.unshift(<ISyntaxToken>name);
return result;
}
else if (name.kind() === SyntaxKind.QualifiedName) {
var qualifiedName = <QualifiedNameSyntax>name;
result.unshift(qualifiedName.right);
name = qualifiedName.left;
}
else {
throw Errors.invalidOperation();
}
}
}
private leftmostName(name: INameSyntax): ISyntaxToken {
while (name.kind() === SyntaxKind.QualifiedName) {
name = (<QualifiedNameSyntax>name).left;
}
return <ISyntaxToken>name;
}
private rightmostName(name: INameSyntax): ISyntaxToken {
if (name.kind() === SyntaxKind.QualifiedName) {
return (<QualifiedNameSyntax>name).right;
}
return <ISyntaxToken>name;
}
private containsToken(list: ISyntaxList<ISyntaxToken>, kind: SyntaxKind): boolean {
for (var i = 0, n = list.childCount(); i < n; i++) {
if (list.childAt(i).kind() === kind) {
return true;
}
}
return false;
}
private exportModuleElement(moduleIdentifier: ISyntaxToken,
moduleElement: IModuleElementSyntax,
elementIdentifier: ISyntaxToken): ExpressionStatementSyntax {
elementIdentifier = this.withNoTrivia(elementIdentifier);
// M1.e = e;
return ExpressionStatementSyntax.create1(
this.factory.binaryExpression(
SyntaxKind.AssignmentExpression,
MemberAccessExpressionSyntax.create1(
this.withNoTrivia(moduleIdentifier),
elementIdentifier.withTrailingTrivia(Syntax.spaceTriviaList)),
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
elementIdentifier))
.withLeadingTrivia(this.indentationTriviaForStartOfNode(moduleElement))
.withTrailingTrivia(this.newLine);
}
private handleExportedModuleElement(parentModule: ISyntaxToken,
moduleElement: IModuleElementSyntax,
elements: IModuleElementSyntax[]): void {
if (moduleElement.kind() === SyntaxKind.VariableStatement) {
var variableStatement = <VariableStatementSyntax>moduleElement;
if (this.containsToken(variableStatement.modifiers, SyntaxKind.ExportKeyword)) {
var declarators = variableStatement.variableDeclaration.variableDeclarators;
for (var i = 0, n = declarators.nonSeparatorCount(); i < n; i++) {
var declarator = declarators.nonSeparatorAt(i);
elements.push(this.exportModuleElement(parentModule, moduleElement, declarator.propertyName));
}
}
}
else if (moduleElement.kind() === SyntaxKind.FunctionDeclaration) {
var functionDeclaration = <FunctionDeclarationSyntax>moduleElement;
if (this.containsToken(functionDeclaration.modifiers, SyntaxKind.ExportKeyword)) {
elements.push(this.exportModuleElement(
parentModule, moduleElement, functionDeclaration.identifier));
}
}
else if (moduleElement.kind() === SyntaxKind.ClassDeclaration) {
var classDeclaration = <ClassDeclarationSyntax>moduleElement;
if (this.containsToken(classDeclaration.modifiers, SyntaxKind.ExportKeyword)) {
elements.push(this.exportModuleElement(parentModule, moduleElement, classDeclaration.identifier));
}
}
else if (moduleElement.kind() === SyntaxKind.ModuleDeclaration) {
var childModule = <ModuleDeclarationSyntax>moduleElement;
if (this.containsToken(childModule.modifiers, SyntaxKind.ExportKeyword)) {
elements.push(this.exportModuleElement(
parentModule, moduleElement, this.leftmostName(childModule.name)));
}
}
}
public visitModuleDeclaration(node: ModuleDeclarationSyntax): IModuleElementSyntax[] {
var _this = this;
// Recurse downwards and get the rewritten children.
var moduleElements = this.convertModuleElements(node.moduleElements);
if (this.mustCaptureThisInModule(node)) {
// TODO: determine the right column for the 'this capture' statment.
moduleElements.unshift(this.generateThisCaptureStatement(0));
}
// Handle the case where the child is an export.
var parentModule = this.rightmostName(node.name);
for (var i = 0, n = node.moduleElements.childCount(); i < n; i++) {
this.handleExportedModuleElement(
parentModule, node.moduleElements.childAt(i), moduleElements);
}
// Break up the dotted name into pieces.
var names = EmitterImpl.splitModuleName(node.name);
// Then, for all the names left of that name, wrap what we've created in a larger module.
for (var nameIndex = names.length - 1; nameIndex >= 0; nameIndex--) {
moduleElements = this.convertModuleDeclaration(
node, names[nameIndex], moduleElements, nameIndex === 0);
if (nameIndex > 0) {
// We're popping out and generate each outer module. As we do so, we have to
// indent whatever we've created so far appropriately.
moduleElements.push(this.exportModuleElement(
names[nameIndex - 1], node, names[nameIndex]));
moduleElements = <IModuleElementSyntax[]>ArrayUtilities.select(moduleElements,
e => _this.changeIndentation(e, /*indentFirstToken:*/ true, _this.options.indentSpaces));
}
}
return moduleElements;
}
private initializedVariable(name: ISyntaxToken): BinaryExpressionSyntax {
return this.factory.binaryExpression(SyntaxKind.LogicalOrExpression,
name,
Syntax.token(SyntaxKind.BarBarToken),
ParenthesizedExpressionSyntax.create1(
Syntax.assignmentExpression(
name,
Syntax.token(SyntaxKind.EqualsToken),
ObjectLiteralExpressionSyntax.create1())));
}
private convertModuleDeclaration(moduleDeclaration: ModuleDeclarationSyntax,
moduleName: ISyntaxToken,
moduleElements: IModuleElementSyntax[],
outermost: boolean): IModuleElementSyntax[] {
moduleName = moduleName.withLeadingTrivia(Syntax.emptyTriviaList).withTrailingTrivia(Syntax.emptyTriviaList);
var moduleIdentifier = moduleName;
var moduleIndentation = this.indentationTriviaForStartOfNode(moduleDeclaration);
var leadingTrivia = outermost ? moduleDeclaration.leadingTrivia() : moduleIndentation;
// var M;
var variableStatement = VariableStatementSyntax.create1(this.factory.variableDeclaration(
Syntax.token(SyntaxKind.VarKeyword).withTrailingTrivia(this.space),
Syntax.separatedList<VariableDeclaratorSyntax>(
[VariableDeclaratorSyntax.create(moduleIdentifier)])))
.withLeadingTrivia(leadingTrivia).withTrailingTrivia(this.newLine);
// function(M) { ... }
var functionExpression = FunctionExpressionSyntax.create1()
.withCallSignature(callSignature(ParameterSyntax.create(moduleIdentifier)).withTrailingTrivia(this.space))
.withBlock(this.factory.block(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.newLine),
Syntax.list(<IStatementSyntax[]>moduleElements),
Syntax.token(SyntaxKind.CloseBraceToken).withLeadingTrivia(moduleIndentation)));
// (function(M) { ... })(M||(M={}));
var expressionStatement = ExpressionStatementSyntax.create1(
this.factory.invocationExpression(
ParenthesizedExpressionSyntax.create1(functionExpression),
ArgumentListSyntax.create1().withArgument(this.initializedVariable(moduleName))))
.withLeadingTrivia(moduleIndentation).withTrailingTrivia(this.newLine);
return [<IModuleElementSyntax>variableStatement, expressionStatement];
}
public visitExpressionStatement(node: ExpressionStatementSyntax): ExpressionStatementSyntax {
// Can't have an expression statement with an anonymous function expression in it.
var rewritten: ExpressionStatementSyntax = super.visitExpressionStatement(node);
// convert: function() { ... }; to (function() { ... });
if (rewritten.expression.kind() === SyntaxKind.FunctionExpression) {
// Wasn a function expression
var functionExpression = <FunctionExpressionSyntax>rewritten.expression;
if (functionExpression.identifier === null) {
// Was anonymous.
// Remove the leading trivia from the function keyword. We'll put it on the open paren
// token instead.
// Now, wrap the function expression in parens to make it legal in javascript.
var parenthesizedExpression = ParenthesizedExpressionSyntax.create1(
functionExpression.withLeadingTrivia(Syntax.emptyTriviaList)).withLeadingTrivia(functionExpression.leadingTrivia());
return rewritten.withExpression(parenthesizedExpression);
}
}
return rewritten;
}
public visitSimpleArrowFunctionExpression(node: SimpleArrowFunctionExpressionSyntax): FunctionExpressionSyntax {
return FunctionExpressionSyntax.create1()
.withCallSignature(callSignature(ParameterSyntax.create(this.withNoTrivia(node.identifier))).withTrailingTrivia(this.space))
.withBlock(this.convertArrowFunctionBody(node)).withLeadingTrivia(node.leadingTrivia());
}
public visitParenthesizedArrowFunctionExpression(node: ParenthesizedArrowFunctionExpressionSyntax): FunctionExpressionSyntax {
return FunctionExpressionSyntax.create1()
.withCallSignature(CallSignatureSyntax.create(node.callSignature.parameterList.accept(this)))
.withBlock(this.convertArrowFunctionBody(node)).withLeadingTrivia(node.leadingTrivia());
}
private convertArrowFunctionBody(arrowFunction: IArrowFunctionExpressionSyntax): BlockSyntax {
var rewrittenBody = arrowFunction.block ? this.visitNode(arrowFunction.block) : this.visitNodeOrToken(arrowFunction.expression);
if (rewrittenBody.kind() === SyntaxKind.Block) {
return <BlockSyntax>rewrittenBody;
}
var arrowToken = arrowFunction.equalsGreaterThanToken;
// first, attach the expression to the return statement
var returnStatement = this.factory.returnStatement(
Syntax.token(SyntaxKind.ReturnKeyword, { trailingTrivia: arrowToken.trailingTrivia().toArray() }),
<IExpressionSyntax>rewrittenBody,
Syntax.token(SyntaxKind.SemicolonToken)).withTrailingTrivia(this.newLine);
// We want to adjust the indentation of the expression so that is aligns as it
// did before. For example, if we started with:
//
// a => foo().bar()
// .baz()
//
// Then we want to end up with:
//
// return foo().bar()
// .baz()
//
// To do this we look at where the previous token (=>) used to end and where the new pevious
// token (return) ends. The difference (in this case '2') is our offset.
var difference = 0;
if (arrowToken.hasTrailingNewLine()) {
// The expression is on the next line. i.e.
//
// foo =>
// expr
//
// So we want it to immediately follow the return statement. i.e.:
//
// return
// expr;
//
// and we adjust based on the column difference between the start of the arrow function
// and the start of the expr.
var arrowFunctionStart = this.columnForStartOfToken(arrowFunction.firstToken());
difference = -arrowFunctionStart;
}
else {
// the expression immediately follows the arrow. i.e.:
//
// foo => expr
//
// So we want it to immediately follow the return statement. i.e.:
//
// return expr;
//
// and we adjust based on the column difference between the end of the arrow token and
// the end of the return statement.
var arrowEndColumn = this.columnForEndOfToken(arrowToken);
var returnKeywordEndColumn = returnStatement.returnKeyword.width();
difference = returnKeywordEndColumn - arrowEndColumn;
}
returnStatement = <ReturnStatementSyntax>this.changeIndentation(
returnStatement, /*changeFirstToken:*/ false, difference);
// Next, indent the return statement. It's going in a block, so it needs to be properly
// indented. Note we do this *after* we've ensured the expression aligns properly.
returnStatement = <ReturnStatementSyntax>this.changeIndentation(
returnStatement, /*indentFirstToken:*/ true, this.options.indentSpaces);
// Now wrap the return statement in a block.
var block = this.factory.block(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.newLine),
Syntax.list([returnStatement]),
Syntax.token(SyntaxKind.CloseBraceToken));
// Note: if we started with something like:
//
// var v = a => 1;
//
// Then we want to convert that to:
//
// var v = function(a) {
// return 1;
// };
//
// However, right now what we've created is:
//
// {
// return 1;
// }
//
// So we need to indent the block with our current column indent so that it aligns with the
// parent structure. Note: we don't wan to adjust the leading brace as that's going to go
// after the function sigature.
return <BlockSyntax>this.changeIndentation(block, /*indentFirstToken:*/ false,
Indentation.columnForStartOfFirstTokenInLineContainingPosition(
this.syntaxTreeCopy, arrowFunction.firstToken().fullStart(), this.options));
}
private static methodSignatureDefaultParameters(signature: MethodSignatureSyntax): ParameterSyntax[] {
return EmitterImpl.callSignatureDefaultParameters(signature.callSignature);
}
private static callSignatureDefaultParameters(callSignature: CallSignatureSyntax): ParameterSyntax[] {
return EmitterImpl.parameterListDefaultParameters(callSignature.parameterList);
}
private static parameterListDefaultParameters(parameterList: ParameterListSyntax): ParameterSyntax[] {
return ArrayUtilities.where(<ParameterSyntax[]>parameterList.parameters.toNonSeparatorArray(), p => p.equalsValueClause !== null);
}
private generatePropertyAssignmentStatement(parameter: ParameterSyntax): ExpressionStatementSyntax {
var identifier = this.withNoTrivia(parameter.identifier);
// this.foo = foo;
return ExpressionStatementSyntax.create1(
Syntax.assignmentExpression(
MemberAccessExpressionSyntax.create1(
Syntax.token(SyntaxKind.ThisKeyword),
identifier.withTrailingTrivia(Syntax.spaceTriviaList)),
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
identifier)).withTrailingTrivia(this.newLine);
}
private generateDefaultValueAssignmentStatement(parameter: ParameterSyntax): IfStatementSyntax {
var identifierName = this.withNoTrivia(parameter.identifier).withTrailingTrivia(this.space);
// typeof foo === 'undefined'
var condition = this.factory.binaryExpression(
SyntaxKind.EqualsExpression,
this.factory.typeOfExpression(
Syntax.token(SyntaxKind.TypeOfKeyword).withTrailingTrivia(this.space),
identifierName),
Syntax.token(SyntaxKind.EqualsEqualsEqualsToken).withTrailingTrivia(this.space),
Syntax.stringLiteralExpression('"undefined"'));
// foo = expr;
var assignmentStatement = ExpressionStatementSyntax.create1(
Syntax.assignmentExpression(
identifierName,
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
parameter.equalsValueClause.value.accept(this))).withTrailingTrivia(this.space);
var block = this.factory.block(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.space),
Syntax.list([assignmentStatement]),
Syntax.token(SyntaxKind.CloseBraceToken)).withTrailingTrivia(this.newLine);
// if (typeof foo === 'undefined') { foo = expr; }
return this.factory.ifStatement(
Syntax.token(SyntaxKind.IfKeyword).withTrailingTrivia(this.space),
Syntax.token(SyntaxKind.OpenParenToken),
condition,
Syntax.token(SyntaxKind.CloseParenToken).withTrailingTrivia(this.space),
block, null);
}
public visitFunctionDeclaration(node: FunctionDeclarationSyntax): FunctionDeclarationSyntax {
if (node.block === null) {
// Function overloads aren't emitted.
return null;
}
var rewritten = <FunctionDeclarationSyntax>super.visitFunctionDeclaration(node);
var parametersWithDefaults = EmitterImpl.callSignatureDefaultParameters(node.callSignature);
if (parametersWithDefaults.length !== 0) {
var defaultValueAssignmentStatements = ArrayUtilities.select(
parametersWithDefaults, p => this.generateDefaultValueAssignmentStatement(p));
var statementColumn = this.columnForStartOfToken(node.firstToken()) + this.options.indentSpaces;
var statements = <IStatementSyntax[]>ArrayUtilities.select(defaultValueAssignmentStatements,
s => this.changeIndentation(s, /*indentFirstToken:*/ true, statementColumn));
// Capture _this if necessary
if (this.mustCaptureThisInFunction(node)) {
statements.push(this.generateThisCaptureStatement(statementColumn));
}
statements.push.apply(statements, rewritten.block.statements.toArray());
rewritten = rewritten.withBlock(rewritten.block.withStatements(
Syntax.list(statements)));
}
return rewritten.withModifiers(Syntax.emptyList<ISyntaxToken>())
.withLeadingTrivia(rewritten.leadingTrivia());
}
public visitParameter(node: ParameterSyntax): ParameterSyntax {
// transfer the trivia from the first token to the the identifier.
return ParameterSyntax.create(node.identifier)
.withLeadingTrivia(node.leadingTrivia())
.withTrailingTrivia(node.trailingTrivia())
}
private generatePropertyAssignment(classDeclaration: ClassDeclarationSyntax,
static: boolean,
memberDeclaration: MemberVariableDeclarationSyntax): ExpressionStatementSyntax {
var isStatic = this.containsToken(memberDeclaration.modifiers, SyntaxKind.StaticKeyword);
var declarator = memberDeclaration.variableDeclarator;
if (static !== isStatic || declarator.equalsValueClause === null) {
return null;
}
// this.foo = expr;
var receiver = MemberAccessExpressionSyntax.create1(
static ? <ILeftHandSideExpressionSyntax>this.withNoTrivia(classDeclaration.identifier)
: Syntax.token(SyntaxKind.ThisKeyword),
this.withNoTrivia(declarator.propertyName)).withTrailingTrivia(Syntax.spaceTriviaList);
return ExpressionStatementSyntax.create1(
Syntax.assignmentExpression(
receiver,
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
declarator.equalsValueClause.value.accept(this).withTrailingTrivia(Syntax.emptyTriviaList)))
.withLeadingTrivia(memberDeclaration.leadingTrivia()).withTrailingTrivia(this.newLine);
}
private generatePropertyAssignments(classDeclaration: ClassDeclarationSyntax,
static: boolean): ExpressionStatementSyntax[] {
var result: ExpressionStatementSyntax[] = [];
// TODO: handle alignment here.
for (var i = 0, n = classDeclaration.classElements.childCount(); i < n; i++) {
var classElement = classDeclaration.classElements.childAt(i);
if (classElement.kind() === SyntaxKind.MemberVariableDeclaration) {
var statement = this.generatePropertyAssignment(
classDeclaration, static, <MemberVariableDeclarationSyntax>classElement);
if (statement !== null) {
result.push(statement);
}
}
}
return result;
}
private createDefaultConstructorDeclaration(classDeclaration: ClassDeclarationSyntax): FunctionDeclarationSyntax {
var classIndentationColumn = this.columnForStartOfToken(classDeclaration.firstToken());
var statementIndentationColumn = classIndentationColumn + this.options.indentSpaces;
var statements: IStatementSyntax[] = [];
if (classDeclaration.heritageClauses.childCount() > 0) {
statements.push(ExpressionStatementSyntax.create1(
this.factory.invocationExpression(
MemberAccessExpressionSyntax.create1(
Syntax.identifierName("_super"), Syntax.identifierName("apply")),
ArgumentListSyntax.create1().withArguments(
Syntax.separatedList<IExpressionSyntax>([
Syntax.token(SyntaxKind.ThisKeyword),
Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.space),
Syntax.identifierName("arguments")])))
).withLeadingTrivia(this.indentationTrivia(statementIndentationColumn))
.withTrailingTrivia(this.newLine));
}
if (this.mustCaptureThisInClass(classDeclaration)) {
statements.push(this.generateThisCaptureStatement(statementIndentationColumn));
}
statements.push.apply(statements, this.generatePropertyAssignments(classDeclaration, /*static:*/ false));
var indentationTrivia = this.indentationTrivia(classIndentationColumn);
var functionDeclaration = FunctionDeclarationSyntax.create(
Syntax.token(SyntaxKind.FunctionKeyword).withLeadingTrivia(indentationTrivia).withTrailingTrivia(this.space),
this.withNoTrivia(classDeclaration.identifier),
CallSignatureSyntax.create1().withTrailingTrivia(this.space))
.withBlock(this.factory.block(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.newLine),
Syntax.list(statements),
Syntax.token(SyntaxKind.CloseBraceToken).withLeadingTrivia(indentationTrivia))).withTrailingTrivia(this.newLine);
return <FunctionDeclarationSyntax>this.changeIndentation(
functionDeclaration, /*indentFirstToken:*/ true, this.options.indentSpaces);
}
private convertConstructorDeclaration(classDeclaration: ClassDeclarationSyntax,
constructorDeclaration: ConstructorDeclarationSyntax): FunctionDeclarationSyntax {
if (constructorDeclaration.block === null) {
return null;
}
var i: number;
var identifier = this.withNoTrivia(classDeclaration.identifier);
var constructorIndentationColumn = this.columnForStartOfToken(constructorDeclaration.firstToken());
var originalParameterListindentation = this.columnForStartOfToken(constructorDeclaration.callSignature.firstToken());
// The original indent + "function" + <space> + "ClassName"
var newParameterListIndentation =
constructorIndentationColumn + SyntaxFacts.getText(SyntaxKind.FunctionKeyword).length + 1 + identifier.width();
var callSignature = constructorDeclaration.callSignature.accept(this);
callSignature= this.changeIndentation(
callSignature, /*changeFirstToken:*/ false, newParameterListIndentation - originalParameterListindentation);
var block = constructorDeclaration.block;
var allStatements = <SyntaxNode[]>block.statements.toArray();
var normalStatements: IStatementSyntax[] = ArrayUtilities.select<any, any>(ArrayUtilities.where(allStatements,
s => !Syntax.isSuperInvocationExpressionStatement(s)), s => s.accept(this));
var instanceAssignments = this.generatePropertyAssignments(classDeclaration, /*static:*/ false);
for (i = instanceAssignments.length - 1; i >= 0; i--) {
normalStatements.unshift(<ExpressionStatementSyntax>this.changeIndentation(
instanceAssignments[i], /*changeFirstToken:*/ true, this.options.indentSpaces));
}
var parameterPropertyAssignments = <ExpressionStatementSyntax[]>ArrayUtilities.select(
ArrayUtilities.where(<ParameterSyntax[]>constructorDeclaration.callSignature.parameterList.parameters.toNonSeparatorArray(), p => p.modifiers.childCount() > 0),
p => this.generatePropertyAssignmentStatement(p));
for (i = parameterPropertyAssignments.length - 1; i >= 0; i--) {
normalStatements.unshift(<IStatementSyntax>this.changeIndentation(
parameterPropertyAssignments[i], /*changeFirstToken:*/ true, this.options.indentSpaces + constructorIndentationColumn));
}
var superStatements: IStatementSyntax[] = ArrayUtilities.select<any, any>(ArrayUtilities.where(allStatements,
s => Syntax.isSuperInvocationExpressionStatement(s)), s => s.accept(this));
normalStatements.unshift.apply(normalStatements, superStatements);
// TODO: use typecheck to determine if 'this' needs to be captured.
if (this.mustCaptureThisInConstructor(constructorDeclaration)) {
normalStatements.unshift(this.generateThisCaptureStatement(this.options.indentSpaces + constructorIndentationColumn));
}
var defaultValueAssignments = <IfStatementSyntax[]>ArrayUtilities.select(
EmitterImpl.parameterListDefaultParameters(constructorDeclaration.callSignature.parameterList),
p => this.generateDefaultValueAssignmentStatement(p));
for (i = defaultValueAssignments.length - 1; i >= 0; i--) {
normalStatements.unshift(<IStatementSyntax>this.changeIndentation(
defaultValueAssignments[i], /*changeFirstToken:*/ true, this.options.indentSpaces + constructorIndentationColumn));
}
// function C(...) { ... }
return FunctionDeclarationSyntax.create(
Syntax.token(SyntaxKind.FunctionKeyword).withTrailingTrivia(this.space),
identifier, callSignature)
.withBlock(block.withStatements(Syntax.list(normalStatements))).withLeadingTrivia(constructorDeclaration.leadingTrivia());
}
private convertMemberFunctionDeclaration(classDeclaration: ClassDeclarationSyntax,
functionDeclaration: MemberFunctionDeclarationSyntax): ExpressionStatementSyntax {
var _this = this;
if (functionDeclaration.block === null) {
return null;
}
var classIdentifier = this.withNoTrivia(classDeclaration.identifier);
var functionIdentifier = this.withNoTrivia(functionDeclaration.propertyName);
var receiver: ILeftHandSideExpressionSyntax = classIdentifier.withLeadingTrivia(functionDeclaration.leadingTrivia());
receiver = this.containsToken(functionDeclaration.modifiers, SyntaxKind.StaticKeyword)
? receiver
: MemberAccessExpressionSyntax.create1(receiver, Syntax.identifierName("prototype"));
receiver = MemberAccessExpressionSyntax.create1(
receiver, functionIdentifier.withTrailingTrivia(Syntax.spaceTriviaList));
var block: BlockSyntax = functionDeclaration.block.accept(this);
var blockTrailingTrivia = block.trailingTrivia();
block = block.withTrailingTrivia(Syntax.emptyTriviaList);
var defaultValueAssignments = <IStatementSyntax[]>ArrayUtilities.select(
EmitterImpl.callSignatureDefaultParameters(functionDeclaration.callSignature),
p => _this.generateDefaultValueAssignmentStatement(p));
var functionColumn = this.columnForStartOfToken(functionDeclaration.firstToken());
var blockStatements = block.statements.toArray();
for (var i = defaultValueAssignments.length - 1; i >= 0; i--) {
blockStatements.unshift(this.changeIndentation(
defaultValueAssignments[i], /*changeFirstToken:*/ true, functionColumn + this.options.indentSpaces));
}
var callSignatureParameterList = <ParameterListSyntax>functionDeclaration.callSignature.parameterList.accept(this);
if (!callSignatureParameterList.hasTrailingTrivia()) {
callSignatureParameterList = <ParameterListSyntax>callSignatureParameterList.withTrailingTrivia(Syntax.spaceTriviaList);
}
// C.prototype.f = function (p1, p2) { ... };
return ExpressionStatementSyntax.create1(Syntax.assignmentExpression(
receiver,
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
FunctionExpressionSyntax.create1()
.withCallSignature(CallSignatureSyntax.create(callSignatureParameterList))
.withBlock(block.withStatements(
Syntax.list(blockStatements))))).withTrailingTrivia(blockTrailingTrivia);
}
private convertMemberAccessor(memberAccessor: SyntaxNode): SimplePropertyAssignmentSyntax {
var propertyName = memberAccessor.kind() === SyntaxKind.GetAccessor
? "get" : "set";
var parameterList = <ParameterListSyntax>(<any>memberAccessor).parameterList.accept(this);
if (!parameterList.hasTrailingTrivia()) {
parameterList = parameterList.withTrailingTrivia(Syntax.spaceTriviaList);
}
return this.factory.simplePropertyAssignment(
Syntax.identifier(propertyName),
Syntax.token(SyntaxKind.ColonToken).withTrailingTrivia(this.space),
FunctionExpressionSyntax.create(
Syntax.token(SyntaxKind.FunctionKeyword),
CallSignatureSyntax.create(parameterList),
(<any>memberAccessor).block.accept(this).withTrailingTrivia(Syntax.emptyTriviaList)))
.withLeadingTrivia(this.indentationTriviaForStartOfNode(memberAccessor));
}
private convertMemberAccessorDeclaration(classDeclaration: ClassDeclarationSyntax,
memberAccessor: SyntaxNode,
classElements: IClassElementSyntax[]): IStatementSyntax {
var name = (<any>memberAccessor).propertyName.valueText();
var i: number;
// Find all the accessors with that name.
var accessors: any[] = [memberAccessor];
for (i = classElements.length - 1; i >= 0; i--) {
var element = classElements[i];
if (element.kind() === SyntaxKind.GetAccessor ||
element.kind() === SyntaxKind.SetAccessor) {
var otherAccessor = <SyntaxNode>element;
if ((<any>otherAccessor).propertyName.value() === name &&
(<any>otherAccessor).block !== null) {
accessors.push(otherAccessor);
classElements.splice(i, 1);
}
}
}
var arguments = [
<any>MemberAccessExpressionSyntax.create1(
this.withNoTrivia(classDeclaration.identifier), Syntax.identifierName("prototype")),
Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.space),
Syntax.stringLiteralExpression('"' + (<any>memberAccessor).propertyName.text() + '"'),
Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.space)
];
var propertyAssignments: ISyntaxNodeOrToken[] = [];
for (i = 0; i < accessors.length; i++) {
var converted = this.convertMemberAccessor(accessors[i]);
converted = <SimplePropertyAssignmentSyntax>this.changeIndentation(
converted, /*changeFirstToken:*/ true, this.options.indentSpaces);
propertyAssignments.push(converted);
propertyAssignments.push(
Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.newLine));
}
var accessorColumn = this.columnForStartOfToken(memberAccessor.firstToken());
var accessorTrivia = this.indentationTrivia(accessorColumn);
var propertyTrivia = this.indentationTrivia(accessorColumn + this.options.indentSpaces);
propertyAssignments.push(this.factory.simplePropertyAssignment(
Syntax.identifier("enumerable"),
Syntax.token(SyntaxKind.ColonToken).withTrailingTrivia(this.space),
Syntax.trueExpression()).withLeadingTrivia(propertyTrivia));
propertyAssignments.push(Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.newLine));
propertyAssignments.push(this.factory.simplePropertyAssignment(
Syntax.identifier("configurable"),
Syntax.token(SyntaxKind.ColonToken).withTrailingTrivia(this.space),
Syntax.trueExpression()).withLeadingTrivia(propertyTrivia).withTrailingTrivia(this.newLine));
arguments.push(this.factory.objectLiteralExpression(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.newLine),
Syntax.separatedList<IPropertyAssignmentSyntax>(propertyAssignments),
Syntax.token(SyntaxKind.CloseBraceToken).withLeadingTrivia(accessorTrivia)));
return ExpressionStatementSyntax.create1(
this.factory.invocationExpression(
MemberAccessExpressionSyntax.create1(Syntax.identifierName("Object"), Syntax.identifierName("defineProperty")),
ArgumentListSyntax.create1().withArguments(Syntax.separatedList<IExpressionSyntax>(arguments))))
.withLeadingTrivia(memberAccessor.leadingTrivia()).withTrailingTrivia(this.newLine);
}
private convertClassElements(classDeclaration: ClassDeclarationSyntax): IStatementSyntax[] {
var result: IStatementSyntax[] = [];
var classElements = <IClassElementSyntax[]>classDeclaration.classElements.toArray();
while (classElements.length > 0) {
var classElement = classElements.shift();
var converted: IStatementSyntax = null;
if (classElement.kind() === SyntaxKind.MemberFunctionDeclaration) {
converted = this.convertMemberFunctionDeclaration(classDeclaration, <MemberFunctionDeclarationSyntax>classElement);
}
else if (classElement.kind() === SyntaxKind.MemberVariableDeclaration) {
converted = this.generatePropertyAssignment(classDeclaration, /*static:*/ true, <MemberVariableDeclarationSyntax>classElement);
}
else if (classElement.kind() === SyntaxKind.GetAccessor ||
classElement.kind() === SyntaxKind.SetAccessor) {
converted = this.convertMemberAccessorDeclaration(classDeclaration, <SyntaxNode>classElement, classElements);
}
if (converted !== null) {
result.push(converted);
}
}
return result;
}
public visitClassDeclaration(node: ClassDeclarationSyntax): VariableStatementSyntax {
var identifier = this.withNoTrivia(node.identifier);
var statements: IStatementSyntax[] = [];
var statementIndentation = this.indentationTrivia(this.options.indentSpaces + this.columnForStartOfToken(node.firstToken()));
if (node.heritageClauses.childCount() > 0) {
// __extends(C, _super);
statements.push(ExpressionStatementSyntax.create1(
this.factory.invocationExpression(
Syntax.identifierName("__extends"),
ArgumentListSyntax.create1().withArguments(Syntax.separatedList<IExpressionSyntax>([
<ISyntaxNodeOrToken>identifier,
Syntax.token(SyntaxKind.CommaToken).withTrailingTrivia(this.space),
Syntax.identifierName("_super")])))).withLeadingTrivia(statementIndentation).withTrailingTrivia(this.newLine));
}
var constructorDeclaration = <ConstructorDeclarationSyntax>ArrayUtilities.firstOrDefault(
node.classElements.toArray(), c => c.kind() === SyntaxKind.ConstructorDeclaration);
var constructorFunctionDeclaration = constructorDeclaration === null
? this.createDefaultConstructorDeclaration(node)
: this.convertConstructorDeclaration(node, constructorDeclaration);
if (constructorFunctionDeclaration !== null) {
statements.push(constructorFunctionDeclaration)
}
statements.push.apply(statements, this.convertClassElements(node));
// return C;
statements.push(this.factory.returnStatement(
Syntax.token(SyntaxKind.ReturnKeyword).withTrailingTrivia(this.space),
identifier,
Syntax.token(SyntaxKind.SemicolonToken))
.withLeadingTrivia(statementIndentation).withTrailingTrivia(this.newLine));
var block = this.factory.block(
Syntax.token(SyntaxKind.OpenBraceToken).withTrailingTrivia(this.newLine),
Syntax.list(statements),
Syntax.token(SyntaxKind.CloseBraceToken).withLeadingTrivia(this.indentationTriviaForStartOfNode(node)));
var callParameters: ParameterSyntax[] = [];
if (node.heritageClauses.childCount() > 0) {
callParameters.push(ParameterSyntax.create(Syntax.identifier("_super")));
}
var callSignature = CallSignatureSyntax.create(
ParameterListSyntax.create1().withParameters(
Syntax.separatedList<ParameterSyntax>(callParameters))).withTrailingTrivia(this.space);
var invocationParameters: ISyntaxNodeOrToken[] = [];
if (node.heritageClauses.childCount() > 0) {
var heritageClause = node.heritageClauses.childAt(0);
if (heritageClause.typeNames.nonSeparatorCount() > 0) {
invocationParameters.push(heritageClause.typeNames.nonSeparatorAt(0)
.withLeadingTrivia(Syntax.emptyTriviaList)
.withTrailingTrivia(Syntax.emptyTriviaList));
}
}
// (function(_super) { ... })(BaseType)
var invocationExpression = this.factory.invocationExpression(
ParenthesizedExpressionSyntax.create1(FunctionExpressionSyntax.create1()
.withCallSignature(callSignature)
.withBlock(block)),
ArgumentListSyntax.create1().withArguments(
Syntax.separatedList<IExpressionSyntax>(invocationParameters)));
// C = (function(_super) { ... })(BaseType)
var variableDeclarator = VariableDeclaratorSyntax.create(
identifier.withTrailingTrivia(Syntax.spaceTriviaList)).withEqualsValueClause(
this.factory.equalsValueClause(
Syntax.token(SyntaxKind.EqualsToken).withTrailingTrivia(this.space),
invocationExpression));
// var C = (function(_super) { ... })(BaseType);
return VariableStatementSyntax.create1(this.factory.variableDeclaration(
Syntax.token(SyntaxKind.VarKeyword).withTrailingTrivia(this.space),
Syntax.separatedList<VariableDeclaratorSyntax>([variableDeclarator])))
.withLeadingTrivia(node.leadingTrivia()).withTrailingTrivia(this.newLine);
}
public visitVariableDeclarator(node: VariableDeclaratorSyntax): VariableDeclaratorSyntax {
var result: VariableDeclaratorSyntax = super.visitVariableDeclarator(node);
if (result.typeAnnotation === null) {
return result;
}
var newTrailingTrivia = result.propertyName.trailingTrivia().concat(result.typeAnnotation.trailingTrivia());
return result.withTypeAnnotation(null)
.withPropertyName(result.propertyName.withTrailingTrivia(newTrailingTrivia));
}
public visitCallSignature(node: CallSignatureSyntax): CallSignatureSyntax {
var result: CallSignatureSyntax = super.visitCallSignature(node);
if (result.typeAnnotation === null) {
return result;
}
var newTrailingTrivia = result.parameterList.trailingTrivia().concat(
result.typeAnnotation.trailingTrivia());
return result.withTypeAnnotation(null).withTrailingTrivia(newTrailingTrivia);
}
public visitCastExpression(node: CastExpressionSyntax): IExpressionSyntax {
var result: CastExpressionSyntax = super.visitCastExpression(node);
var subExpression = result.expression;
var totalTrivia = result.leadingTrivia().concat(subExpression.leadingTrivia());
return subExpression.withLeadingTrivia(totalTrivia);
}
public visitInterfaceDeclaration(node: InterfaceDeclarationSyntax): InterfaceDeclarationSyntax {
// TODO: transfer trivia if important.
return null;
}
public visitTypeParameterList(node: TypeParameterListSyntax): TypeParameterListSyntax {
return null;
}
private generateEnumValueExpression(enumDeclaration: EnumDeclarationSyntax,
enumElement: EnumElementSyntax,
assignDefaultValues: boolean,
index: number): IExpressionSyntax {
if (enumElement.equalsValueClause !== null) {
// Use the value if one is provided.
return enumElement.equalsValueClause.value.accept(this).withTrailingTrivia(Syntax.emptyTriviaList);
}
// Didn't have a value. Synthesize one if we're doing that, or use the previous item's value
// (plus one).
if (assignDefaultValues) {
return Syntax.numericLiteralExpression(index.toString());
}
// Add one to the previous value.
var enumIdentifier = this.withNoTrivia(enumDeclaration.identifier);
var previousEnumElement = enumDeclaration.enumElements.nonSeparatorAt(index - 1);
var variableIdentifier = this.withNoTrivia(previousEnumElement.propertyName);
var receiver = variableIdentifier.kind() === SyntaxKind.StringLiteral
? ElementAccessExpressionSyntax.create1(enumIdentifier, variableIdentifier)
: <IExpressionSyntax>MemberAccessExpressionSyntax.create1(enumIdentifier, variableIdentifier);
return this.factory.binaryExpression(SyntaxKind.PlusExpression,
receiver.withTrailingTrivia(Syntax.spaceTriviaList),
Syntax.token(SyntaxKind.PlusToken).withTrailingTrivia(this.space),
Syntax.numericLiteralExpression("1"));
}
private generateEnumFunctionExpression(node: EnumDeclarationSyntax): FunctionExpressionSyntax {