/// <summary>
/// Given a generated filename gets the source map from the .js file
/// </summary>
private ReverseSourceMap GetReverseSourceMap(string fileName)
{
ReverseSourceMap sourceMap;
if (!_generatedFileToSourceMap.TryGetValue(fileName, out sourceMap))
{
// See if we are using source maps for this file.
foreach (var keyValue in _originalFileToSourceMap)
{
foreach (var source in keyValue.Value.Map.Sources)
{
var path = GetFileRelativeToFile(keyValue.Key, source);
if (CommonUtils.IsSamePath(path, fileName))
{
return(_generatedFileToSourceMap[fileName] = new ReverseSourceMap(
keyValue.Value.Map,
keyValue.Key
));
}
}
}
// Fallback to TypeScript specific logic... This might be better for
// try and look next to the .js file...
string extension;
try {
extension = Path.GetExtension(fileName);
} catch (ArgumentException) {
extension = String.Empty;
}
if (!string.Equals(extension, NodejsConstants.JavaScriptExtension, StringComparison.OrdinalIgnoreCase))
{
string baseFile = fileName.Substring(0, fileName.Length - extension.Length);
string jsFile = baseFile + NodejsConstants.JavaScriptExtension;
if (File.Exists(jsFile) && File.Exists(jsFile + NodejsConstants.MapExtension))
{
// we're using source maps...
try {
using (StreamReader reader = new StreamReader(baseFile + NodejsConstants.JavaScriptExtension + NodejsConstants.MapExtension)) {
_generatedFileToSourceMap[fileName] = sourceMap = new ReverseSourceMap(
new SourceMap(reader),
jsFile
);
}
} catch (NotSupportedException) {
_generatedFileToSourceMap[fileName] = null;
} catch (InvalidOperationException) {
_generatedFileToSourceMap[fileName] = null;
}
}
else
{
_generatedFileToSourceMap[fileName] = null;
}
}
}
return(sourceMap);
}
/// <summary>
/// Maps a line number from the original code to the generated JavaScript.
/// Line numbers are zero based.
/// </summary>
internal bool MapToJavaScript(string requestedFileName, int requestedLineNo, int requestedColumnNo, out string fileName, out int lineNo, out int columnNo)
{
fileName = requestedFileName;
lineNo = requestedLineNo;
columnNo = requestedColumnNo;
ReverseSourceMap sourceMap = GetReverseSourceMap(requestedFileName);
if (sourceMap != null)
{
SourceMapInfo result;
if (sourceMap.Mapping.TryMapPointBack(requestedLineNo, requestedColumnNo, out result))
{
lineNo = result.Line;
columnNo = result.Column;
foreach (var source in sourceMap.Mapping.Sources)
{
// requestedFilename == projectdir\server.ts
// sourceMap.JavaScriptFile == projectdir\out\server.js
// source == ..\server.ts
//
var path = GetFileRelativeToFile(sourceMap.JavaScriptFile, source);
if (CommonUtils.IsSamePath(path, requestedFileName))
{
fileName = sourceMap.JavaScriptFile;
return(true);
}
}
try {
fileName = Path.Combine(Path.GetDirectoryName(fileName) ?? string.Empty, result.FileName);
} catch (ArgumentException) {
} catch (PathTooLongException) {
}
Debug.WriteLine("Mapped breakpoint from {0} {1} to {2} {3}", requestedFileName, requestedLineNo, fileName, lineNo);
}
return(true);
}
return(false);
}
/// <summary>
/// Given a generated filename gets the source map from the .js file
/// </summary>
private ReverseSourceMap GetReverseSourceMap(string fileName) {
ReverseSourceMap sourceMap;
if (!_generatedFileToSourceMap.TryGetValue(fileName, out sourceMap)) {
// See if we are using source maps for this file.
foreach(var keyValue in _originalFileToSourceMap) {
foreach (var source in keyValue.Value.Map.Sources) {
var path = GetFileRelativeToFile(keyValue.Key, source);
if (CommonUtils.IsSamePath(path, fileName)) {
return _generatedFileToSourceMap[fileName] = new ReverseSourceMap(
keyValue.Value.Map,
keyValue.Key
);
}
}
}
// Fallback to TypeScript specific logic... This might be better for
// try and look next to the .js file...
string extension;
try {
extension = Path.GetExtension(fileName);
} catch (ArgumentException) {
extension = String.Empty;
}
if (!string.Equals(extension, NodejsConstants.JavaScriptExtension, StringComparison.OrdinalIgnoreCase)) {
string baseFile = fileName.Substring(0, fileName.Length - extension.Length);
string jsFile = baseFile + NodejsConstants.JavaScriptExtension;
if (File.Exists(jsFile) && File.Exists(jsFile + NodejsConstants.MapExtension)) {
// we're using source maps...
try {
using (StreamReader reader = new StreamReader(baseFile + NodejsConstants.JavaScriptExtension + NodejsConstants.MapExtension)) {
_generatedFileToSourceMap[fileName] = sourceMap = new ReverseSourceMap(
new SourceMap(reader),
jsFile
);
}
} catch (NotSupportedException) {
_generatedFileToSourceMap[fileName] = null;
} catch (InvalidOperationException) {
_generatedFileToSourceMap[fileName] = null;
}
} else {
_generatedFileToSourceMap[fileName] = null;
}
}
}
return sourceMap;
}
