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Copy pathtypescript.ts
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1538 lines (1268 loc) · 66.1 KB
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//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
///<reference path='references.ts' />
if (Error) (<any>Error).stackTraceLimit = 1000;
module TypeScript {
export var fileResolutionTime = 0;
export var fileResolutionIOTime = 0;
export var fileResolutionScanImportsTime = 0;
export var fileResolutionImportFileSearchTime = 0;
export var fileResolutionGetDefaultLibraryTime = 0;
export var sourceCharactersCompiled = 0;
export var syntaxTreeParseTime = 0;
export var typeCheckTime = 0;
export var createDeclarationsTime = 0;
export var compilerResolvePathTime = 0;
export var compilerDirectoryNameTime = 0;
export var compilerDirectoryExistsTime = 0;
export var compilerFileExistsTime = 0;
export var emitTime = 0;
export var emitWriteFileTime = 0;
export var declarationEmitTime = 0;
export var declarationEmitIsExternallyVisibleTime = 0;
export var declarationEmitTypeSignatureTime = 0;
export var declarationEmitGetBoundDeclTypeTime = 0;
export var declarationEmitIsOverloadedCallSignatureTime = 0;
export var declarationEmitFunctionDeclarationGetSymbolTime = 0;
export var declarationEmitGetBaseTypeTime = 0;
export var declarationEmitGetAccessorFunctionTime = 0;
export var declarationEmitGetTypeParameterSymbolTime = 0;
export var declarationEmitGetImportDeclarationSymbolTime = 0;
export var ioHostResolvePathTime = 0;
export var ioHostDirectoryNameTime = 0;
export var ioHostCreateDirectoryStructureTime = 0;
export var ioHostWriteFileTime = 0;
export interface PullSymbolInfo {
symbol: PullSymbol;
aliasSymbol: PullTypeAliasSymbol;
ast: ISyntaxElement;
enclosingScopeSymbol: PullSymbol;
}
export interface PullCallSymbolInfo {
targetSymbol: PullSymbol;
resolvedSignatures: TypeScript.PullSignatureSymbol[];
candidateSignature: TypeScript.PullSignatureSymbol;
isConstructorCall: boolean;
ast: ISyntaxElement;
enclosingScopeSymbol: PullSymbol;
}
export interface PullVisibleSymbolsInfo {
symbols: PullSymbol[];
enclosingScopeSymbol: PullSymbol;
}
export enum EmitOutputResult {
Succeeded,
FailedBecauseOfSyntaxErrors,
FailedBecauseOfCompilerOptionsErrors,
FailedToGenerateDeclarationsBecauseOfSemanticErrors
}
export class EmitOutput {
public outputFiles: OutputFile[] = [];
public emitOutputResult: EmitOutputResult;
constructor(emitOutputResult = EmitOutputResult.Succeeded) {
this.emitOutputResult = emitOutputResult;
}
}
export enum OutputFileType {
JavaScript,
SourceMap,
Declaration
}
export class OutputFile {
constructor(public name: string,
public writeByteOrderMark: boolean,
public text: string,
public fileType: OutputFileType,
public sourceMapEntries: SourceMapEntry[] = []) {
}
}
// Represents the results of the last "pull" on the compiler when using the streaming
// 'compile' method. The compile result for a single pull can have diagnostics (if
// something went wrong), and/or OutputFiles that need to get written.
export class CompileResult {
public diagnostics: Diagnostic[] = [];
public outputFiles: OutputFile[] = [];
public static fromDiagnostics(diagnostics: Diagnostic[]): CompileResult {
var result = new CompileResult();
result.diagnostics = diagnostics;
return result;
}
public static fromOutputFiles(outputFiles: OutputFile[]): CompileResult {
var result = new CompileResult();
result.outputFiles = outputFiles;
return result;
}
}
export interface ICancellationToken {
isCancellationRequested(): boolean;
}
export class OperationCanceledException { }
export class CancellationToken {
public static None: CancellationToken = new CancellationToken(null)
constructor(private cancellationToken: ICancellationToken) {
}
public isCancellationRequested() {
return this.cancellationToken && this.cancellationToken.isCancellationRequested();
}
public throwIfCancellationRequested(): void {
if (this.isCancellationRequested()) {
throw new OperationCanceledException();
}
}
}
class DocumentRegistryEntry {
public refCount: number = 0;
public owners: string[] = [];
constructor(public document: Document) {
}
}
export interface IDocumentRegistry {
acquireDocument(
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
byteOrderMark: ByteOrderMark,
version: string,
isOpen: boolean,
referencedFiles: string[]): TypeScript.Document;
updateDocument(
document: Document,
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
version: string,
isOpen: boolean,
textChangeRange: TextChangeRange): TypeScript.Document;
releaseDocument(fileName: string, compilationSettings: ImmutableCompilationSettings): void
}
export class NonCachingDocumentRegistry implements IDocumentRegistry {
public static Instance: IDocumentRegistry = new NonCachingDocumentRegistry();
public acquireDocument(
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
byteOrderMark: ByteOrderMark,
version: string,
isOpen: boolean,
referencedFiles: string[]= []): TypeScript.Document {
return Document.create(compilationSettings, fileName, scriptSnapshot, byteOrderMark, version, isOpen, referencedFiles);
}
public updateDocument(
document: Document,
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
version: string,
isOpen: boolean,
textChangeRange: TextChangeRange
): TypeScript.Document {
return document.update(scriptSnapshot, version, isOpen, textChangeRange);
}
public releaseDocument(fileName: string, compilationSettings: ImmutableCompilationSettings): void {
// no op since this class doesn't cache anything
}
}
export class DocumentRegistry implements IDocumentRegistry {
private buckets: IIndexable<StringHashTable<DocumentRegistryEntry>> = {};
private getValue(settings: ImmutableCompilationSettings, key: string): any {
var value = (<any>settings)[key]();
if (value === undefined) {
return (<any>ImmutableCompilationSettings.defaultSettings())[key]();
}
return value;
}
private getKeyFromCompilationSettings(settings: ImmutableCompilationSettings): string {
return "_" + this.getValue(settings, "propagateEnumConstants").toString() + "|" +
this.getValue(settings, "allowAutomaticSemicolonInsertion") + "|" +
LanguageVersion[this.getValue(settings, "codeGenTarget")];
}
private getBucketForCompilationSettings(settings: ImmutableCompilationSettings, createIfMissing: boolean): StringHashTable<DocumentRegistryEntry> {
var key = this.getKeyFromCompilationSettings(settings);
var bucket = this.buckets[key];
if (!bucket && createIfMissing) {
this.buckets[key] = bucket = new StringHashTable<DocumentRegistryEntry>();
}
return bucket;
}
public reportStats() {
var bucketInfoArray = Object.keys(this.buckets).filter(name => name && name.charAt(0) === '_').map(name => {
var entries = this.buckets[name];
var documents = entries.getAllKeys().map((name) => {
var entry = entries.lookup(name);
return {
name: name,
refCount: entry.refCount,
references: entry.owners.slice(0)
};
});
documents.sort((x, y) => y.refCount - x.refCount);
return { bucket: name, documents: documents }
});
return JSON.stringify(bucketInfoArray, null, 2);
}
public acquireDocument(
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
byteOrderMark: ByteOrderMark,
version: string,
isOpen: boolean,
referencedFiles: string[]= []): TypeScript.Document {
var bucket = this.getBucketForCompilationSettings(compilationSettings, /*createIfMissing*/ true);
var entry = bucket.lookup(fileName);
if (!entry) {
var document = Document.create(compilationSettings, fileName, scriptSnapshot, byteOrderMark, version, isOpen, referencedFiles);
entry = new DocumentRegistryEntry(document);
bucket.add(fileName, entry);
}
entry.refCount++;
return entry.document;
}
public updateDocument(
document: Document,
fileName: string,
compilationSettings: ImmutableCompilationSettings,
scriptSnapshot: IScriptSnapshot,
version: string,
isOpen: boolean,
textChangeRange: TextChangeRange
): TypeScript.Document {
var bucket = this.getBucketForCompilationSettings(compilationSettings, /*createIfMissing*/ false);
Debug.assert(bucket);
var entry = bucket.lookup(fileName);
Debug.assert(entry);
if (entry.document.isOpen === isOpen && entry.document.version === version) {
return entry.document;
}
entry.document = entry.document.update(scriptSnapshot, version, isOpen, textChangeRange);
return entry.document;
}
public releaseDocument(fileName: string, compilationSettings: ImmutableCompilationSettings): void {
var bucket = this.getBucketForCompilationSettings(compilationSettings, false);
Debug.assert(bucket);
var entry = bucket.lookup(fileName);
entry.refCount--;
Debug.assert(entry.refCount >= 0);
if (entry.refCount === 0) {
bucket.remove(fileName);
}
}
}
interface IExpressionWithArgumentListSyntax extends IExpressionSyntax {
expression: IExpressionSyntax;
argumentList: ArgumentListSyntax;
}
export class TypeScriptCompiler {
private semanticInfoChain: SemanticInfoChain = null;
constructor(public logger: ILogger = new NullLogger(),
private _settings: ImmutableCompilationSettings = ImmutableCompilationSettings.defaultSettings()) {
this.semanticInfoChain = new SemanticInfoChain(this, logger);
}
public getSemanticInfoChain() {
return this.semanticInfoChain;
}
public compilationSettings(): ImmutableCompilationSettings {
return this._settings;
}
public setCompilationSettings(newSettings: ImmutableCompilationSettings) {
var oldSettings = this._settings;
this._settings = newSettings;
if (!compareDataObjects(oldSettings, newSettings)) {
// If our options have changed at all, we have to consider any cached semantic
// data we have invalid.
this.semanticInfoChain.invalidate(oldSettings, newSettings);
}
}
public getDocument(fileName: string): Document {
fileName = TypeScript.switchToForwardSlashes(fileName);
return this.semanticInfoChain.getDocument(fileName);
}
public cleanupSemanticCache(): void {
this.semanticInfoChain.invalidate();
}
public addOrUpdateFile(document: Document): void {
// TODO: TypeScript.sourceCharactersCompiled += document. scriptSnapshot.getLength();
// Note: the semantic info chain will recognize that this is a replacement of an
// existing script, and will handle it appropriately.
this.semanticInfoChain.addDocument(document);
}
public addFile(
fileName: string,
scriptSnapshot: IScriptSnapshot,
byteOrderMark: ByteOrderMark,
version: string,
isOpen: boolean,
referencedFiles: string[]= []): void {
fileName = TypeScript.switchToForwardSlashes(fileName);
var document = Document.create(this.compilationSettings(), fileName, scriptSnapshot, byteOrderMark, version, isOpen, referencedFiles);
this.addOrUpdateFile(document);
}
public updateFile(fileName: string, scriptSnapshot: IScriptSnapshot, version: string, isOpen: boolean, textChangeRange: TextChangeRange): void {
fileName = TypeScript.switchToForwardSlashes(fileName);
var document = this.getDocument(fileName);
var updatedDocument = document.update(scriptSnapshot, version, isOpen, textChangeRange);
// Note: the semantic info chain will recognize that this is a replacement of an
// existing script, and will handle it appropriately.
this.addOrUpdateFile(updatedDocument);
}
public removeFile(fileName: string): void {
fileName = TypeScript.switchToForwardSlashes(fileName);
this.semanticInfoChain.removeDocument(fileName);
}
public mapOutputFileName(document: Document, emitOptions: EmitOptions, extensionChanger: (fname: string, wholeFileNameReplaced: boolean) => string) {
if (document.emitToOwnOutputFile()) {
var updatedFileName = document.fileName;
if (emitOptions.outputDirectory() !== "") {
// Replace the common directory path with the option specified
updatedFileName = document.fileName.replace(emitOptions.commonDirectoryPath(), "");
updatedFileName = emitOptions.outputDirectory() + updatedFileName;
}
return extensionChanger(updatedFileName, false);
}
else {
return extensionChanger(emitOptions.sharedOutputFile(), true);
}
}
private writeByteOrderMarkForDocument(document: Document) {
// Set this to 'true' if you want to know why the compiler emitted a document with a
// byte order mark.
var printReason = false;
// If module its always emitted in its own file
if (document.emitToOwnOutputFile()) {
var result = document.byteOrderMark !== ByteOrderMark.None;
if (printReason) {
Environment.standardOut.WriteLine("Emitting byte order mark because of: " + document.fileName);
}
return result;
}
else {
var fileNames = this.fileNames();
var result = false;
for (var i = 0, n = fileNames.length; i < n; i++) {
var document = this.getDocument(fileNames[i]);
if (document.syntaxTree().isExternalModule()) {
// Dynamic module never contributes to the single file
continue;
}
if (document.byteOrderMark !== ByteOrderMark.None) {
if (printReason) {
Environment.standardOut.WriteLine("Emitting byte order mark because of: " + document.fileName);
result = true;
}
else {
return true;
}
}
}
return result;
}
}
static mapToDTSFileName(fileName: string, wholeFileNameReplaced: boolean) {
return getDeclareFilePath(fileName);
}
public _shouldEmit(document: Document) {
// If its already a declare file or is resident or does not contain body
return !document.isDeclareFile();
}
public _shouldEmitDeclarations(document: Document) {
if (!this.compilationSettings().generateDeclarationFiles()) {
return false;
}
return this._shouldEmit(document);
}
// Does the actual work of emittin the declarations from the provided document into the
// provided emitter. If no emitter is provided a new one is created.
private emitDocumentDeclarationsWorker(
document: Document,
emitOptions: EmitOptions,
declarationEmitter?: DeclarationEmitter): DeclarationEmitter {
var sourceUnit = document.sourceUnit();
Debug.assert(this._shouldEmitDeclarations(document));
if (declarationEmitter) {
declarationEmitter.document = document;
}
else {
var declareFileName = this.mapOutputFileName(document, emitOptions, TypeScriptCompiler.mapToDTSFileName);
declarationEmitter = new DeclarationEmitter(declareFileName, document, this, emitOptions, this.semanticInfoChain);
}
declarationEmitter.emitDeclarations(sourceUnit);
return declarationEmitter;
}
public _emitDocumentDeclarations(
document: Document,
emitOptions: EmitOptions,
onSingleFileEmitComplete: (files: OutputFile) => void,
sharedEmitter: DeclarationEmitter): DeclarationEmitter {
var start = new Date().getTime();
if (this._shouldEmitDeclarations(document)) {
if (document.emitToOwnOutputFile()) {
var singleEmitter = this.emitDocumentDeclarationsWorker(document, emitOptions);
if (singleEmitter) {
onSingleFileEmitComplete(singleEmitter.getOutputFile());
}
}
else {
// Create or reuse file
sharedEmitter = this.emitDocumentDeclarationsWorker(document, emitOptions, sharedEmitter);
}
}
declarationEmitTime += new Date().getTime() - start;
return sharedEmitter;
}
// Will not throw exceptions.
public emitAllDeclarations(resolvePath: (path: string) => string): EmitOutput {
var emitOutput = new EmitOutput();
var emitOptions = new EmitOptions(this, resolvePath);
if (emitOptions.diagnostic()) {
emitOutput.emitOutputResult = EmitOutputResult.FailedBecauseOfCompilerOptionsErrors;
return emitOutput;
}
var sharedEmitter: DeclarationEmitter = null;
var fileNames = this.fileNames();
for (var i = 0, n = fileNames.length; i < n; i++) {
var fileName = fileNames[i];
var document = this.getDocument(fileNames[i]);
sharedEmitter = this._emitDocumentDeclarations(document, emitOptions,
file => emitOutput.outputFiles.push(file), sharedEmitter);
}
if (sharedEmitter) {
emitOutput.outputFiles.push(sharedEmitter.getOutputFile());
}
return emitOutput;
}
// Will not throw exceptions.
public emitDeclarations(fileName: string, resolvePath: (path: string) => string): EmitOutput {
fileName = TypeScript.switchToForwardSlashes(fileName);
var emitOutput = new EmitOutput();
var emitOptions = new EmitOptions(this, resolvePath);
if (emitOptions.diagnostic()) {
emitOutput.emitOutputResult = EmitOutputResult.FailedBecauseOfCompilerOptionsErrors;
return emitOutput;
}
var document = this.getDocument(fileName);
// Emitting module or multiple files, always goes to single file
if (document.emitToOwnOutputFile()) {
this._emitDocumentDeclarations(document, emitOptions,
file => emitOutput.outputFiles.push(file), /*sharedEmitter:*/ null);
return emitOutput;
}
else {
return this.emitAllDeclarations(resolvePath);
}
}
public canEmitDeclarations(fileName: string) {
fileName = TypeScript.switchToForwardSlashes(fileName);
var document = this.getDocument(fileName);
return this._shouldEmitDeclarations(document);
}
static mapToFileNameExtension(extension: string, fileName: string, wholeFileNameReplaced: boolean) {
if (wholeFileNameReplaced) {
// The complete output is redirected in this file so do not change extension
return fileName;
}
else {
// Change the extension of the file
var splitFname = fileName.split(".");
splitFname.pop();
return splitFname.join(".") + extension;
}
}
static mapToJSFileName(fileName: string, wholeFileNameReplaced: boolean) {
return TypeScriptCompiler.mapToFileNameExtension(".js", fileName, wholeFileNameReplaced);
}
// Caller is responsible for closing the returned emitter.
// May throw exceptions.
private emitDocumentWorker(document: Document, emitOptions: EmitOptions, emitter?: Emitter): Emitter {
var sourceUnit = document.sourceUnit();
Debug.assert(this._shouldEmit(document));
var typeScriptFileName = document.fileName;
if (!emitter) {
var javaScriptFileName = this.mapOutputFileName(document, emitOptions, TypeScriptCompiler.mapToJSFileName);
var outFile = new TextWriter(javaScriptFileName, this.writeByteOrderMarkForDocument(document), OutputFileType.JavaScript);
emitter = new Emitter(javaScriptFileName, outFile, emitOptions, this.semanticInfoChain);
if (this.compilationSettings().mapSourceFiles()) {
// We always create map files next to the jsFiles
var sourceMapFile = new TextWriter(javaScriptFileName + SourceMapper.MapFileExtension, /*writeByteOrderMark:*/ false, OutputFileType.SourceMap);
emitter.createSourceMapper(document, javaScriptFileName, outFile, sourceMapFile, emitOptions.resolvePath);
}
}
else if (this.compilationSettings().mapSourceFiles()) {
// Already emitting into js file, update the mapper for new source info
emitter.setSourceMapperNewSourceFile(document);
}
// Set location info
emitter.setDocument(document);
emitter.emitJavascript(sourceUnit, /*startLine:*/false);
return emitter;
}
// Private. only for use by compiler or CompilerIterator
public _emitDocument(
document: Document,
emitOptions: EmitOptions,
onSingleFileEmitComplete: (files: OutputFile[]) => void,
sharedEmitter: Emitter): Emitter {
var start = new Date().getTime();
// Emitting module or multiple files, always goes to single file
if (this._shouldEmit(document)) {
if (document.emitToOwnOutputFile()) {
// We're outputting to mulitple files. We don't want to reuse an emitter in that case.
var singleEmitter = this.emitDocumentWorker(document, emitOptions);
if (singleEmitter) {
onSingleFileEmitComplete(singleEmitter.getOutputFiles());
}
}
else {
// We're not outputting to multiple files. Keep using the same emitter and don't
// close until below.
sharedEmitter = this.emitDocumentWorker(document, emitOptions, sharedEmitter);
}
}
emitTime += new Date().getTime() - start;
return sharedEmitter;
}
// Will not throw exceptions.
public emitAll(resolvePath: (path: string) => string): EmitOutput {
var emitOutput = new EmitOutput();
var emitOptions = new EmitOptions(this, resolvePath);
if (emitOptions.diagnostic()) {
emitOutput.emitOutputResult = EmitOutputResult.FailedBecauseOfCompilerOptionsErrors;
return emitOutput;
}
var fileNames = this.fileNames();
var sharedEmitter: Emitter = null;
// Iterate through the files, as long as we don't get an error.
for (var i = 0, n = fileNames.length; i < n; i++) {
var fileName = fileNames[i];
var document = this.getDocument(fileName);
sharedEmitter = this._emitDocument(document, emitOptions,
files => emitOutput.outputFiles.push.apply(emitOutput.outputFiles, files),
sharedEmitter);
}
if (sharedEmitter) {
emitOutput.outputFiles.push.apply(emitOutput.outputFiles, sharedEmitter.getOutputFiles());
}
return emitOutput;
}
// Emit single file if outputMany is specified, else emit all
// Will not throw exceptions.
public emit(fileName: string, resolvePath: (path: string) => string): EmitOutput {
fileName = TypeScript.switchToForwardSlashes(fileName);
var emitOutput = new EmitOutput();
var emitOptions = new EmitOptions(this, resolvePath);
if (emitOptions.diagnostic()) {
emitOutput.emitOutputResult = EmitOutputResult.FailedBecauseOfCompilerOptionsErrors;
return emitOutput;
}
var document = this.getDocument(fileName);
// Emitting module or multiple files, always goes to single file
if (document.emitToOwnOutputFile()) {
this._emitDocument(document, emitOptions,
files => emitOutput.outputFiles.push.apply(emitOutput.outputFiles, files), /*sharedEmitter:*/ null);
return emitOutput;
}
else {
// In output Single file mode, emit everything
return this.emitAll(resolvePath);
}
}
// Returns an iterator that will stream compilation results from this compiler. Syntactic
// diagnostics will be returned first, then semantic diagnostics, then emit results, then
// declaration emit results.
//
// The continueOnDiagnostics flag governs whether or not iteration follows the batch compiler
// logic and doesn't perform further analysis once diagnostics are produced. For example,
// in batch compilation nothing is done if there are any syntactic diagnostics. Clients
// can override this if they still want to procede in those cases.
public compile(resolvePath: (path: string) => string, continueOnDiagnostics = false): Iterator<CompileResult> {
return new CompilerIterator(this, resolvePath, continueOnDiagnostics);
}
//
// Pull typecheck infrastructure
//
public getSyntacticDiagnostics(fileName: string): Diagnostic[] {
fileName = TypeScript.switchToForwardSlashes(fileName)
return this.getDocument(fileName).diagnostics();
}
/** Used for diagnostics in tests */
private getSyntaxTree(fileName: string): SyntaxTree {
return this.getDocument(fileName).syntaxTree();
}
private getSourceUnit(fileName: string): SourceUnitSyntax {
return this.getDocument(fileName).sourceUnit();
}
public getSemanticDiagnostics(fileName: string): Diagnostic[] {
fileName = TypeScript.switchToForwardSlashes(fileName);
var document = this.getDocument(fileName);
var startTime = (new Date()).getTime();
PullTypeResolver.typeCheck(this.compilationSettings(), this.semanticInfoChain, document)
var endTime = (new Date()).getTime();
typeCheckTime += endTime - startTime;
var errors = this.semanticInfoChain.getDiagnostics(fileName);
errors = ArrayUtilities.distinct(errors, Diagnostic.equals);
errors.sort((d1, d2) => {
if (d1.fileName() < d2.fileName()) {
return -1;
}
else if (d1.fileName() > d2.fileName()) {
return 1;
}
if (d1.start() < d2.start()) {
return -1;
}
else if (d1.start() > d2.start()) {
return 1;
}
// For multiple errors reported on the same file at the same position.
var code1 = diagnosticInformationMap[d1.diagnosticKey()].code;
var code2 = diagnosticInformationMap[d2.diagnosticKey()].code;
if (code1 < code2) {
return -1;
}
else if (code1 > code2) {
return 1;
}
return 0;
});
return errors;
}
public getCompilerOptionsDiagnostics(resolvePath: (path: string) => string): Diagnostic[] {
var emitOptions = new EmitOptions(this, resolvePath);
var emitDiagnostic = emitOptions.diagnostic();
if (emitDiagnostic) {
return [emitDiagnostic];
}
return sentinelEmptyArray;
}
public resolveAllFiles() {
var fileNames = this.fileNames();
for (var i = 0, n = fileNames.length; i < n; i++) {
this.getSemanticDiagnostics(fileNames[i]);
}
}
public getSymbolOfDeclaration(decl: PullDecl): PullSymbol {
if (!decl) {
return null;
}
var resolver = this.semanticInfoChain.getResolver();
var ast = this.semanticInfoChain.getASTForDecl(decl);
if (!ast) {
return null;
}
var enclosingDecl = resolver.getEnclosingDecl(decl);
if (ast.kind() === SyntaxKind.GetAccessor || ast.kind() === SyntaxKind.SetAccessor) {
return this.getSymbolOfDeclaration(enclosingDecl);
}
return resolver.resolveAST(ast, /*inContextuallyTypedAssignment:*/false, new PullTypeResolutionContext(resolver));
}
private extractResolutionContextFromAST(resolver: PullTypeResolver, ast: ISyntaxElement, document: Document, propagateContextualTypes: boolean): { ast: ISyntaxElement; enclosingDecl: PullDecl; resolutionContext: PullTypeResolutionContext; inContextuallyTypedAssignment: boolean; inWithBlock: boolean; } {
var scriptName = document.fileName;
var enclosingDecl: PullDecl = null;
var enclosingDeclAST: ISyntaxElement = null;
var inContextuallyTypedAssignment = false;
var inWithBlock = false;
var resolutionContext = new PullTypeResolutionContext(resolver);
if (!ast) {
return null;
}
var path = this.getASTPath(ast);
// Extract infromation from path
for (var i = 0 , n = path.length; i < n; i++) {
var current = path[i];
switch (current.kind()) {
case SyntaxKind.FunctionExpression:
case SyntaxKind.SimpleArrowFunctionExpression:
case SyntaxKind.ParenthesizedArrowFunctionExpression:
if (propagateContextualTypes) {
resolver.resolveAST(current, /*inContextuallyTypedAssignment*/ true, resolutionContext);
}
break;
//case SyntaxKind.Parameter:
// var parameter = <ParameterSyntax> current;
// inContextuallyTypedAssignment = parameter.typeExpr !== null;
// this.extractResolutionContextForVariable(inContextuallyTypedAssignment, propagateContextualTypes, resolver, resolutionContext, enclosingDecl, parameter, parameter.init);
// break;
case SyntaxKind.MemberVariableDeclaration:
var memberVariable = <MemberVariableDeclarationSyntax> current;
inContextuallyTypedAssignment = memberVariable.variableDeclarator.typeAnnotation !== null;
this.extractResolutionContextForVariable(inContextuallyTypedAssignment, propagateContextualTypes, resolver, resolutionContext, enclosingDecl, memberVariable, memberVariable.variableDeclarator.equalsValueClause);
break;
case SyntaxKind.VariableDeclarator:
var variableDeclarator = <VariableDeclaratorSyntax>current;
inContextuallyTypedAssignment = variableDeclarator.typeAnnotation !== null;
this.extractResolutionContextForVariable(inContextuallyTypedAssignment, propagateContextualTypes, resolver, resolutionContext, enclosingDecl, variableDeclarator, variableDeclarator.equalsValueClause);
break;
case SyntaxKind.InvocationExpression:
case SyntaxKind.ObjectCreationExpression:
if (propagateContextualTypes) {
var isNew = current.kind() === SyntaxKind.ObjectCreationExpression;
var callExpression = <IExpressionWithArgumentListSyntax>current;
var contextualType: PullTypeSymbol = null;
// Check if we are in an argumnt for a call, propagate the contextual typing
if ((i + 2 < n) && callExpression.argumentList === path[i + 1] && callExpression.argumentList.arguments === path[i + 2]) {
var callResolutionResults = new PullAdditionalCallResolutionData();
if (isNew) {
resolver.resolveObjectCreationExpression(<ObjectCreationExpressionSyntax>callExpression, resolutionContext, callResolutionResults);
}
else {
resolver.resolveInvocationExpression(<InvocationExpressionSyntax>callExpression, resolutionContext, callResolutionResults);
}
// Find the index in the arguments list
if (callResolutionResults.actualParametersContextTypeSymbols) {
var argExpression = path[i + 3];
if (argExpression) {
for (var j = 0, m = callExpression.argumentList.arguments.length; j < m; j++) {
if (callExpression.argumentList.arguments[j] === argExpression) {
var callContextualType = callResolutionResults.actualParametersContextTypeSymbols[j];
if (callContextualType) {
contextualType = callContextualType;
break;
}
}
}
}
}
}
else {
// Just resolve the call expression
if (isNew) {
resolver.resolveObjectCreationExpression(<ObjectCreationExpressionSyntax>callExpression, resolutionContext);
}
else {
resolver.resolveInvocationExpression(<InvocationExpressionSyntax>callExpression, resolutionContext);
}
}
resolutionContext.pushNewContextualType(contextualType);
}
break;
case SyntaxKind.ArrayLiteralExpression:
if (propagateContextualTypes) {
// Propagate the child element type
var contextualType: PullTypeSymbol = null;
var currentContextualType = resolutionContext.getContextualType();
if (currentContextualType && currentContextualType.isArrayNamedTypeReference()) {
contextualType = currentContextualType.getElementType();
}
resolutionContext.pushNewContextualType(contextualType);
}
break;
case SyntaxKind.ObjectLiteralExpression:
if (propagateContextualTypes) {
var objectLiteralExpression = <ObjectLiteralExpressionSyntax>current;
var objectLiteralResolutionContext = new PullAdditionalObjectLiteralResolutionData();
resolver.resolveObjectLiteralExpression(objectLiteralExpression, inContextuallyTypedAssignment, resolutionContext, objectLiteralResolutionContext);
// find the member in the path
var memeberAST = (path[i + 1] && path[i + 1].kind() === SyntaxKind.SeparatedList) ? path[i + 2] : path[i + 1];
if (memeberAST) {
// Propagate the member contextual type
var contextualType: PullTypeSymbol = null;
var memberDecls = objectLiteralExpression.propertyAssignments;
if (memberDecls && objectLiteralResolutionContext.membersContextTypeSymbols) {
for (var j = 0, m = memberDecls.length; j < m; j++) {
if (memberDecls[j] === memeberAST) {
var memberContextualType = objectLiteralResolutionContext.membersContextTypeSymbols[j];
if (memberContextualType) {
contextualType = memberContextualType;
break;
}
}
}
}
resolutionContext.pushNewContextualType(contextualType);
}
}
break;
case SyntaxKind.AssignmentExpression:
if (propagateContextualTypes) {
var assignmentExpression = <BinaryExpressionSyntax>current;
var contextualType: PullTypeSymbol = null;
if (path[i + 1] && path[i + 1] === assignmentExpression.right) {
// propagate the left hand side type as a contextual type
var leftType = resolver.resolveAST(assignmentExpression.left, inContextuallyTypedAssignment, resolutionContext).type;
if (leftType) {
inContextuallyTypedAssignment = true;
contextualType = leftType;
}
}
resolutionContext.pushNewContextualType(contextualType);
}
break;
case SyntaxKind.CastExpression:
var castExpression = <CastExpressionSyntax>current;
if (!(i + 1 < n && path[i + 1] === castExpression.type)) {
// We are outside the cast term
if (propagateContextualTypes) {
var contextualType: PullTypeSymbol = null;
var typeSymbol = resolver.resolveAST(castExpression, inContextuallyTypedAssignment, resolutionContext).type;
// Set the context type
if (typeSymbol) {
inContextuallyTypedAssignment = true;
contextualType = typeSymbol;
}
resolutionContext.pushNewContextualType(contextualType);
}
}
break;
case SyntaxKind.ReturnStatement:
if (propagateContextualTypes) {
var returnStatement = <ReturnStatementSyntax>current;
var contextualType: PullTypeSymbol = null;
if (enclosingDecl && (enclosingDecl.kind & PullElementKind.SomeFunction)) {
var typeAnnotation = ASTHelpers.getType(enclosingDeclAST);
if (typeAnnotation) {
// The containing function has a type annotation, propagate it as the contextual type