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/// <reference path="session.ts" />
module ts.server {
export interface SessionClientHost extends LanguageServiceHost {
writeMessage(message: string): void;
}
interface CompletionEntry extends CompletionInfo {
fileName: string;
position: number;
}
interface RenameEntry extends RenameInfo {
fileName: string;
position: number;
locations: RenameLocation[];
findInStrings: boolean;
findInComments: boolean;
}
export class SessionClient implements LanguageService {
private sequence: number = 0;
private fileMapping: ts.Map<string> = {};
private lineMaps: ts.Map<number[]> = {};
private messages: string[] = [];
private lastRenameEntry: RenameEntry;
constructor(private host: SessionClientHost) {
}
public onMessage(message: string): void {
this.messages.push(message);
}
private writeMessage(message: string): void {
this.host.writeMessage(message);
}
private getLineMap(fileName: string): number[] {
var lineMap = ts.lookUp(this.lineMaps, fileName);
if (!lineMap) {
var scriptSnapshot = this.host.getScriptSnapshot(fileName);
lineMap = this.lineMaps[fileName] = ts.computeLineStarts(scriptSnapshot.getText(0, scriptSnapshot.getLength()));
}
return lineMap;
}
private lineOffsetToPosition(fileName: string, lineOffset: protocol.Location): number {
return ts.computePositionOfLineAndCharacter(this.getLineMap(fileName), lineOffset.line - 1, lineOffset.offset - 1);
}
private positionToOneBasedLineOffset(fileName: string, position: number): protocol.Location {
var lineOffset = ts.computeLineAndCharacterOfPosition(this.getLineMap(fileName), position);
return {
line: lineOffset.line + 1,
offset: lineOffset.character + 1
};
}
private convertCodeEditsToTextChange(fileName: string, codeEdit: protocol.CodeEdit): ts.TextChange {
var start = this.lineOffsetToPosition(fileName, codeEdit.start);
var end = this.lineOffsetToPosition(fileName, codeEdit.end);
return {
span: ts.createTextSpanFromBounds(start, end),
newText: codeEdit.newText
};
}
private processRequest<T extends protocol.Request>(command: string, args?: any): T {
var request: protocol.Request = {
seq: this.sequence++,
type: "request",
arguments: args,
command
};
this.writeMessage(JSON.stringify(request));
return <T>request;
}
private processResponse<T extends protocol.Response>(request: protocol.Request): T {
var lastMessage = this.messages.shift();
Debug.assert(!!lastMessage, "Did not recieve any responses.");
// Read the content length
var contentLengthPrefix = "Content-Length: ";
var lines = lastMessage.split("\r\n");
Debug.assert(lines.length >= 2, "Malformed response: Expected 3 lines in the response.");
var contentLengthText = lines[0];
Debug.assert(contentLengthText.indexOf(contentLengthPrefix) === 0, "Malformed response: Response text did not contain content-length header.");
var contentLength = parseInt(contentLengthText.substring(contentLengthPrefix.length));
// Read the body
var responseBody = lines[2];
// Verify content length
Debug.assert(responseBody.length + 1 === contentLength, "Malformed response: Content length did not match the response's body length.");
try {
var response: T = JSON.parse(responseBody);
}
catch (e) {
throw new Error("Malformed response: Failed to parse server response: " + lastMessage + ". \r\n Error details: " + e.message);
}
// verify the sequence numbers
Debug.assert(response.request_seq === request.seq, "Malformed response: response sequance number did not match request sequence number.");
// unmarshal errors
if (!response.success) {
throw new Error("Error " + response.message);
}
Debug.assert(!!response.body, "Malformed response: Unexpected empty response body.");
return response;
}
openFile(fileName: string): void {
var args: protocol.FileRequestArgs = { file: fileName };
this.processRequest(CommandNames.Open, args);
}
closeFile(fileName: string): void {
var args: protocol.FileRequestArgs = { file: fileName };
this.processRequest(CommandNames.Close, args);
}
changeFile(fileName: string, start: number, end: number, newText: string): void {
// clear the line map after an edit
this.lineMaps[fileName] = undefined;
var lineOffset = this.positionToOneBasedLineOffset(fileName, start);
var endLineOffset = this.positionToOneBasedLineOffset(fileName, end);
var args: protocol.ChangeRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
endLine: endLineOffset.line,
endOffset: endLineOffset.offset,
insertString: newText
};
this.processRequest(CommandNames.Change, args);
}
getQuickInfoAtPosition(fileName: string, position: number): QuickInfo {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset
};
var request = this.processRequest<protocol.QuickInfoRequest>(CommandNames.Quickinfo, args);
var response = this.processResponse<protocol.QuickInfoResponse>(request);
var start = this.lineOffsetToPosition(fileName, response.body.start);
var end = this.lineOffsetToPosition(fileName, response.body.end);
return {
kind: response.body.kind,
kindModifiers: response.body.kindModifiers,
textSpan: ts.createTextSpanFromBounds(start, end),
displayParts: [{ kind: "text", text: response.body.displayString }],
documentation: [{ kind: "text", text: response.body.documentation }]
};
}
getCompletionsAtPosition(fileName: string, position: number): CompletionInfo {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.CompletionsRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
prefix: undefined
};
var request = this.processRequest<protocol.CompletionsRequest>(CommandNames.Completions, args);
var response = this.processResponse<protocol.CompletionsResponse>(request);
return {
isMemberCompletion: false,
isNewIdentifierLocation: false,
entries: response.body,
fileName: fileName,
position: position
};
}
getCompletionEntryDetails(fileName: string, position: number, entryName: string): CompletionEntryDetails {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.CompletionDetailsRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
entryNames: [entryName]
};
var request = this.processRequest<protocol.CompletionDetailsRequest>(CommandNames.CompletionDetails, args);
var response = this.processResponse<protocol.CompletionDetailsResponse>(request);
Debug.assert(response.body.length == 1, "Unexpected length of completion details response body.");
return response.body[0];
}
getNavigateToItems(searchValue: string): NavigateToItem[] {
var args: protocol.NavtoRequestArgs = {
searchValue,
file: this.host.getScriptFileNames()[0]
};
var request = this.processRequest<protocol.NavtoRequest>(CommandNames.Navto, args);
var response = this.processResponse<protocol.NavtoResponse>(request);
return response.body.map(entry => {
var fileName = entry.file;
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
name: entry.name,
containerName: entry.containerName || "",
containerKind: entry.containerKind || "",
kind: entry.kind,
kindModifiers: entry.kindModifiers,
matchKind: entry.matchKind,
isCaseSensitive: entry.isCaseSensitive,
fileName: fileName,
textSpan: ts.createTextSpanFromBounds(start, end)
};
});
}
getFormattingEditsForRange(fileName: string, start: number, end: number, options: ts.FormatCodeOptions): ts.TextChange[] {
var startLineOffset = this.positionToOneBasedLineOffset(fileName, start);
var endLineOffset = this.positionToOneBasedLineOffset(fileName, end);
var args: protocol.FormatRequestArgs = {
file: fileName,
line: startLineOffset.line,
offset: startLineOffset.offset,
endLine: endLineOffset.line,
endOffset: endLineOffset.offset,
};
// TODO: handle FormatCodeOptions
var request = this.processRequest<protocol.FormatRequest>(CommandNames.Format, args);
var response = this.processResponse<protocol.FormatResponse>(request);
return response.body.map(entry=> this.convertCodeEditsToTextChange(fileName, entry));
}
getFormattingEditsForDocument(fileName: string, options: ts.FormatCodeOptions): ts.TextChange[] {
return this.getFormattingEditsForRange(fileName, 0, this.host.getScriptSnapshot(fileName).getLength(), options);
}
getFormattingEditsAfterKeystroke(fileName: string, position: number, key: string, options: FormatCodeOptions): ts.TextChange[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FormatOnKeyRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
key: key
};
// TODO: handle FormatCodeOptions
var request = this.processRequest<protocol.FormatOnKeyRequest>(CommandNames.Formatonkey, args);
var response = this.processResponse<protocol.FormatResponse>(request);
return response.body.map(entry=> this.convertCodeEditsToTextChange(fileName, entry));
}
getDefinitionAtPosition(fileName: string, position: number): DefinitionInfo[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
};
var request = this.processRequest<protocol.DefinitionRequest>(CommandNames.Definition, args);
var response = this.processResponse<protocol.DefinitionResponse>(request);
return response.body.map(entry => {
var fileName = entry.file;
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
containerKind: "",
containerName: "",
fileName: fileName,
textSpan: ts.createTextSpanFromBounds(start, end),
kind: "",
name: ""
};
});
}
getTypeDefinitionAtPosition(fileName: string, position: number): DefinitionInfo[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
};
var request = this.processRequest<protocol.TypeDefinitionRequest>(CommandNames.TypeDefinition, args);
var response = this.processResponse<protocol.TypeDefinitionResponse>(request);
return response.body.map(entry => {
var fileName = entry.file;
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
containerKind: "",
containerName: "",
fileName: fileName,
textSpan: ts.createTextSpanFromBounds(start, end),
kind: "",
name: ""
};
});
}
findReferences(fileName: string, position: number): ReferencedSymbol[]{
// Not yet implemented.
return [];
}
getReferencesAtPosition(fileName: string, position: number): ReferenceEntry[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
};
var request = this.processRequest<protocol.ReferencesRequest>(CommandNames.References, args);
var response = this.processResponse<protocol.ReferencesResponse>(request);
return response.body.refs.map(entry => {
var fileName = entry.file;
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
fileName: fileName,
textSpan: ts.createTextSpanFromBounds(start, end),
isWriteAccess: entry.isWriteAccess,
};
});
}
getEmitOutput(fileName: string): EmitOutput {
throw new Error("Not Implemented Yet.");
}
getSyntacticDiagnostics(fileName: string): Diagnostic[] {
throw new Error("Not Implemented Yet.");
}
getSemanticDiagnostics(fileName: string): Diagnostic[] {
throw new Error("Not Implemented Yet.");
}
getCompilerOptionsDiagnostics(): Diagnostic[] {
throw new Error("Not Implemented Yet.");
}
getRenameInfo(fileName: string, position: number, findInStrings?: boolean, findInComments?: boolean): RenameInfo {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.RenameRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
findInStrings,
findInComments
};
var request = this.processRequest<protocol.RenameRequest>(CommandNames.Rename, args);
var response = this.processResponse<protocol.RenameResponse>(request);
var locations: RenameLocation[] = [];
response.body.locs.map((entry: protocol.SpanGroup) => {
var fileName = entry.file;
entry.locs.map((loc: protocol.TextSpan) => {
var start = this.lineOffsetToPosition(fileName, loc.start);
var end = this.lineOffsetToPosition(fileName, loc.end);
locations.push({
textSpan: ts.createTextSpanFromBounds(start, end),
fileName: fileName
});
});
});
return this.lastRenameEntry = {
canRename: response.body.info.canRename,
displayName: response.body.info.displayName,
fullDisplayName: response.body.info.fullDisplayName,
kind: response.body.info.kind,
kindModifiers: response.body.info.kindModifiers,
localizedErrorMessage: response.body.info.localizedErrorMessage,
triggerSpan: ts.createTextSpanFromBounds(position, position),
fileName: fileName,
position: position,
findInStrings: findInStrings,
findInComments: findInComments,
locations: locations
};
}
findRenameLocations(fileName: string, position: number, findInStrings: boolean, findInComments: boolean): RenameLocation[] {
if (!this.lastRenameEntry ||
this.lastRenameEntry.fileName !== fileName ||
this.lastRenameEntry.position !== position ||
this.lastRenameEntry.findInStrings != findInStrings ||
this.lastRenameEntry.findInComments != findInComments) {
this.getRenameInfo(fileName, position, findInStrings, findInComments);
}
return this.lastRenameEntry.locations;
}
decodeNavigationBarItems(items: protocol.NavigationBarItem[], fileName: string): NavigationBarItem[] {
if (!items) {
return [];
}
return items.map(item => ({
text: item.text,
kind: item.kind,
kindModifiers: item.kindModifiers || "",
spans: item.spans.map(span=> createTextSpanFromBounds(this.lineOffsetToPosition(fileName, span.start), this.lineOffsetToPosition(fileName, span.end))),
childItems: this.decodeNavigationBarItems(item.childItems, fileName),
indent: 0,
bolded: false,
grayed: false
}));
}
getNavigationBarItems(fileName: string): NavigationBarItem[] {
var args: protocol.FileRequestArgs = {
file: fileName
};
var request = this.processRequest<protocol.NavBarRequest>(CommandNames.NavBar, args);
var response = this.processResponse<protocol.NavBarResponse>(request);
return this.decodeNavigationBarItems(response.body, fileName);
}
getNameOrDottedNameSpan(fileName: string, startPos: number, endPos: number): TextSpan {
throw new Error("Not Implemented Yet.");
}
getBreakpointStatementAtPosition(fileName: string, position: number): TextSpan {
throw new Error("Not Implemented Yet.");
}
getSignatureHelpItems(fileName: string, position: number): SignatureHelpItems {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.SignatureHelpRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset
};
var request = this.processRequest<protocol.SignatureHelpRequest>(CommandNames.SignatureHelp, args);
var response = this.processResponse<protocol.SignatureHelpResponse>(request);
if (!response.body) {
return undefined;
}
var helpItems: protocol.SignatureHelpItems = response.body;
var span = helpItems.applicableSpan;
var start = this.lineOffsetToPosition(fileName, span.start);
var end = this.lineOffsetToPosition(fileName, span.end);
var result: SignatureHelpItems = {
items: helpItems.items,
applicableSpan: {
start: start,
length: end - start
},
selectedItemIndex: helpItems.selectedItemIndex,
argumentIndex: helpItems.argumentIndex,
argumentCount: helpItems.argumentCount,
}
return result;
}
getOccurrencesAtPosition(fileName: string, position: number): ReferenceEntry[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
};
var request = this.processRequest<protocol.OccurrencesRequest>(CommandNames.Occurrences, args);
var response = this.processResponse<protocol.OccurrencesResponse>(request);
return response.body.map(entry => {
var fileName = entry.file;
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
fileName,
textSpan: ts.createTextSpanFromBounds(start, end),
isWriteAccess: entry.isWriteAccess,
};
});
}
getDocumentHighlights(fileName: string, position: number): DocumentHighlights[] {
throw new Error("Not Implemented Yet.");
}
getOutliningSpans(fileName: string): OutliningSpan[] {
throw new Error("Not Implemented Yet.");
}
getTodoComments(fileName: string, descriptors: TodoCommentDescriptor[]): TodoComment[] {
throw new Error("Not Implemented Yet.");
}
getBraceMatchingAtPosition(fileName: string, position: number): TextSpan[] {
var lineOffset = this.positionToOneBasedLineOffset(fileName, position);
var args: protocol.FileLocationRequestArgs = {
file: fileName,
line: lineOffset.line,
offset: lineOffset.offset,
};
var request = this.processRequest<protocol.BraceRequest>(CommandNames.Brace, args);
var response = this.processResponse<protocol.BraceResponse>(request);
return response.body.map(entry => {
var start = this.lineOffsetToPosition(fileName, entry.start);
var end = this.lineOffsetToPosition(fileName, entry.end);
return {
start: start,
length: end - start,
};
});
}
getIndentationAtPosition(fileName: string, position: number, options: EditorOptions): number {
throw new Error("Not Implemented Yet.");
}
getSyntacticClassifications(fileName: string, span: TextSpan): ClassifiedSpan[] {
throw new Error("Not Implemented Yet.");
}
getSemanticClassifications(fileName: string, span: TextSpan): ClassifiedSpan[] {
throw new Error("Not Implemented Yet.");
}
getEncodedSyntacticClassifications(fileName: string, span: TextSpan): Classifications {
throw new Error("Not Implemented Yet.");
}
getEncodedSemanticClassifications(fileName: string, span: TextSpan): Classifications {
throw new Error("Not Implemented Yet.");
}
getProgram(): Program {
throw new Error("SourceFile objects are not serializable through the server protocol.");
}
getSourceFile(fileName: string): SourceFile {
throw new Error("SourceFile objects are not serializable through the server protocol.");
}
cleanupSemanticCache(): void {
throw new Error("cleanupSemanticCache is not available through the server layer.");
}
dispose(): void {
throw new Error("dispose is not available through the server layer.");
}
}
}
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