Prune the old deploy code. This CL does a few changes:

pkg/polymer/lib/src/compiler.dart

Index: pkg/polymer/lib/src/compiler.dart
diff --git a/pkg/polymer/lib/src/compiler.dart b/pkg/polymer/lib/src/compiler.dart
index 5e2c98f4238019f05062a9c45941b43928d780fe..0b90a2b3d7b0b2bcc815c52efbc62fbc7ec4ee68 100644
--- a/pkg/polymer/lib/src/compiler.dart
+++ b/pkg/polymer/lib/src/compiler.dart
@@ -12,7 +12,6 @@ import 'package:analyzer_experimental/src/generated/ast.dart' show Directive, Ur
 import 'package:csslib/visitor.dart' show StyleSheet, treeToDebugString;
 import 'package:html5lib/dom.dart';
 import 'package:html5lib/parser.dart';
-import 'package:observe/transform.dart' show transformObservables;
 import 'package:source_maps/span.dart' show Span;
 import 'package:source_maps/refactor.dart' show TextEditTransaction;
 import 'package:source_maps/printer.dart';
@@ -23,13 +22,11 @@ import 'css_analyzer.dart' show analyzeCss, findUrlsImported,
 import 'css_emitters.dart' show rewriteCssUris,
        emitComponentStyleSheet, emitOriginalCss, emitStyleSheet;
 import 'dart_parser.dart';
-import 'emitters.dart';
 import 'file_system.dart';
 import 'files.dart';
 import 'info.dart';
 import 'messages.dart';
 import 'compiler_options.dart';
-import 'paths.dart';
 import 'utils.dart';
 
 /**
@@ -57,12 +54,11 @@ class Compiler {
   final FileSystem fileSystem;
   final CompilerOptions options;
   final List<SourceFile> files = <SourceFile>[];
-  final List<OutputFile> output = <OutputFile>[];
 
   String _mainPath;
+  String _packageRoot;
   String _resetCssFile;
   StyleSheet _cssResetStyleSheet;
-  PathMapper _pathMapper;
   Messages _messages;
 
   FutureGroup _tasks;
@@ -79,8 +75,7 @@ class Compiler {
     _mainPath = options.inputFile;
     var mainDir = path.dirname(_mainPath);
     var baseDir = options.baseDir != null ? options.baseDir : mainDir;
-    var outputDir = options.outputDir != null ? options.outputDir : mainDir;
-    var packageRoot = options.packageRoot != null ? options.packageRoot
+    _packageRoot = options.packageRoot != null ? options.packageRoot
         : path.join(path.dirname(_mainPath), 'packages');
 
     if (options.resetCssFile != null) {
@@ -92,18 +87,14 @@ class Compiler {
     }
 
     // Normalize paths - all should be relative or absolute paths.
-    if (path.isAbsolute(_mainPath) || path.isAbsolute(baseDir) ||
-        path.isAbsolute(outputDir) || path.isAbsolute(packageRoot)) {
+    if (path.isAbsolute(_mainPath) || path.isAbsolute(baseDir)
+        || path.isAbsolute(_packageRoot)) {
       if (path.isRelative(_mainPath)) _mainPath = path.resolve(_mainPath);
       if (path.isRelative(baseDir)) baseDir = path.resolve(baseDir);
-      if (path.isRelative(outputDir)) outputDir = path.resolve(outputDir);
-      if (path.isRelative(packageRoot)) {
-        packageRoot = path.resolve(packageRoot);
+      if (path.isRelative(_packageRoot)) {
+        _packageRoot = path.resolve(_packageRoot);
       }
     }
-    _pathMapper = new PathMapper(
-        baseDir, outputDir, packageRoot, options.forceMangle,
-        options.rewriteUrls);
   }
 
   /** Compile the application starting from the given input file. */
@@ -118,15 +109,9 @@ class Compiler {
 
       // Analyze all CSS files.
       _time('Analyzed Style Sheets', '', () =>
-          analyzeCss(_pathMapper.packageRoot, files, info,
+          analyzeCss(_packageRoot, files, info,
               global.pseudoElements, _messages,
               warningsAsErrors: options.warningsAsErrors));
-
-      // TODO(jmesserly): need to go through our errors, and figure out if some
-      // of them should be warnings instead.
-      if (_messages.hasErrors || options.analysisOnly) return;
-      _transformDart();
-      _emit();
     });
   }
 
@@ -151,8 +136,8 @@ class Compiler {
     files.add(file);
 
     var fileInfo = _time('Analyzed definitions', inputUrl.url, () {
-      return analyzeDefinitions(global, inputUrl, file.document,
-        _pathMapper.packageRoot, _messages, isEntryPoint: isEntryPoint);
+      return analyzeDefinitions(global, inputUrl, file.document, _packageRoot,
+        _messages, isEntryPoint: isEntryPoint);
     });
     info[inputUrl.resolvedPath] = fileInfo;
 
@@ -162,7 +147,6 @@ class Compiler {
           null)));
     }
 
-    _setOutputFilenames(fileInfo);
     _processImports(fileInfo);
 
     // Load component files referenced by [file].
@@ -179,8 +163,8 @@ class Compiler {
     _loadFile(fileInfo.externalFile, _parseDartFile);
 
     // Process any @imports inside of a <style> tag.
-    var urlInfos = findUrlsImported(fileInfo, fileInfo.inputUrl,
-        _pathMapper.packageRoot, file.document, _messages, options);
+    var urlInfos = findUrlsImported(fileInfo, fileInfo.inputUrl, _packageRoot,
+        file.document, _messages, options);
     for (var urlInfo in urlInfos) {
       _loadFile(urlInfo, _parseCssFile);
     }
@@ -195,8 +179,8 @@ class Compiler {
 
       // Process any @imports inside of the <style> tag in a component.
       var urlInfos = findUrlsImported(component,
-          component.declaringFile.inputUrl, _pathMapper.packageRoot,
-          component.element, _messages, options);
+          component.declaringFile.inputUrl, _packageRoot, component.element,
+          _messages, options);
       for (var urlInfo in urlInfos) {
         _loadFile(urlInfo, _parseCssFile);
       }
@@ -216,36 +200,8 @@ class Compiler {
     }
   }
 
-  void _setOutputFilenames(FileInfo fileInfo) {
-    var filePath = fileInfo.dartCodeUrl.resolvedPath;
-    fileInfo.outputFilename = _pathMapper.mangle(path.basename(filePath),
-        '.dart', path.extension(filePath) == '.html');
-    for (var component in fileInfo.declaredComponents) {
-      var externalFile = component.externalFile;
-      var name = null;
-      if (externalFile != null) {
-        name = _pathMapper.mangle(
-            path.basename(externalFile.resolvedPath), '.dart');
-      } else {
-        var declaringFile = component.declaringFile;
-        var prefix = path.basename(declaringFile.inputUrl.resolvedPath);
-        if (declaringFile.declaredComponents.length == 1
-            && !declaringFile.codeAttached && !declaringFile.isEntryPoint) {
-          name = _pathMapper.mangle(prefix, '.dart', true);
-        } else {
-          var componentName = component.tagName.replaceAll('-', '_');
-          name = _pathMapper.mangle('${prefix}_$componentName', '.dart', true);
-        }
-      }
-      component.outputFilename = name;
-    }
-  }
-
   /** Parse an HTML file. */
   Future _parseHtmlFile(UrlInfo inputUrl) {
-    if (!_pathMapper.checkInputPath(inputUrl, _messages)) {
-      return new Future<SourceFile>.value(null);
-    }
     var filePath = inputUrl.resolvedPath;
     return fileSystem.readTextOrBytes(filePath)
         .catchError((e) => _readError(e, inputUrl))
@@ -260,9 +216,6 @@ class Compiler {
 
   /** Parse a Dart file. */
   Future _parseDartFile(UrlInfo inputUrl) {
-    if (!_pathMapper.checkInputPath(inputUrl, _messages)) {
-      return new Future<SourceFile>.value(null);
-    }
     var filePath = inputUrl.resolvedPath;
     return fileSystem.readText(filePath)
         .catchError((e) => _readError(e, inputUrl))
@@ -276,8 +229,7 @@ class Compiler {
 
   /** Parse a stylesheet file. */
   Future _parseCssFile(UrlInfo inputUrl) {
-    if (!options.emulateScopedCss ||
-        !_pathMapper.checkInputPath(inputUrl, _messages)) {
+    if (!options.emulateScopedCss) {
       return new Future<SourceFile>.value(null);
     }
     var filePath = inputUrl.resolvedPath;
@@ -314,9 +266,6 @@ class Compiler {
     var fileInfo = new FileInfo(inputUrl);
     info[resolvedPath] = fileInfo;
     fileInfo.inlinedCode = parseDartCode(resolvedPath, dartFile.code);
-    fileInfo.outputFilename =
-        _pathMapper.mangle(path.basename(resolvedPath), '.dart', false);
-
     _processImports(fileInfo);
   }
 
@@ -349,8 +298,7 @@ class Compiler {
   void _resolveStyleSheetImports(UrlInfo inputUrl, String processingFile,
       StyleSheet styleSheet) {
     var urlInfos = _time('CSS imports', processingFile, () =>
-        findImportsInStyleSheet(styleSheet, _pathMapper.packageRoot, inputUrl,
-            _messages));
+        findImportsInStyleSheet(styleSheet, _packageRoot, inputUrl, _messages));
 
     for (var urlInfo in urlInfos) {
       if (urlInfo == null) break;
@@ -374,39 +322,8 @@ class Compiler {
 
     var span = library.userCode.sourceFile.span(
         directive.offset, directive.end);
-    return UrlInfo.resolve(uri, library.dartCodeUrl, span,
-        _pathMapper.packageRoot, _messages);
-  }
-
-  /**
-   * Transform Dart source code.
-   * Currently, the only transformation is [transformObservables].
-   * Calls _emitModifiedDartFiles to write the transformed files.
-   */
-  void _transformDart() {
-    var libraries = _findAllDartLibraries();
-
-    var transformed = [];
-    for (var lib in libraries) {
-      var userCode = lib.userCode;
-      var transaction = transformObservables(userCode.compilationUnit,
-          userCode.sourceFile, userCode.code, _messages);
-      if (transaction != null) {
-        _edits[lib.userCode] = transaction;
-        if (transaction.hasEdits) {
-          transformed.add(lib);
-        } else if (lib.htmlFile != null) {
-          // All web components will be transformed too. Track that.
-          transformed.add(lib);
-        }
-      }
-    }
-
-    _findModifiedDartFiles(libraries, transformed);
-
-    libraries.forEach(_fixImports);
-
-    _emitModifiedDartFiles(libraries);
+    return UrlInfo.resolve(uri, library.dartCodeUrl, span, _packageRoot,
+        _messages);
   }
 
   /**
@@ -445,39 +362,6 @@ class Compiler {
   }
 
   /**
-   * Queue modified Dart files to be written.
-   * This will not write files that are handled by [WebComponentEmitter] and
-   * [EntryPointEmitter].
-   */
-  void _emitModifiedDartFiles(List<LibraryInfo> libraries) {
-    for (var lib in libraries) {
-      // Components will get emitted by WebComponentEmitter, and the
-      // entry point will get emitted by MainPageEmitter.
-      // So we only need to worry about other .dart files.
-      if (lib.modified && lib is FileInfo &&
-          lib.htmlFile == null && !lib.isEntryPoint) {
-        var transaction = _edits[lib.userCode];
-
-        // Save imports that were modified by _fixImports.
-        for (var d in lib.userCode.directives) {
-          transaction.edit(d.offset, d.end, d.toString());
-        }
-
-        if (!lib.userCode.isPart) {
-          var pos = lib.userCode.firstPartOffset;
-          // Note: we use a different prefix than "autogenerated" to make
-          // ChangeRecord unambiguous. Otherwise it would be imported by this
-          // and polymer, resulting in a collision.
-          // TODO(jmesserly): only generate this for libraries that need it.
-          transaction.edit(pos, pos, "\nimport "
-              "'package:observe/observe.dart' as __observe;\n");
-        }
-        _emitFileAndSourceMaps(lib, transaction.commit(), lib.dartCodeUrl);
-      }
-    }
-  }
-
-  /**
    * This method computes which Dart files have been modified, starting
    * from [transformed] and marking recursively through all files that import
    * the modified files.
@@ -516,30 +400,6 @@ class Compiler {
     }
   }
 
-  void _fixImports(LibraryInfo library) {
-    // Fix imports. Modified files must use the generated path, otherwise
-    // we need to make the path relative to the input.
-    for (var directive in library.userCode.directives) {
-      var importPath = _getDirectiveUrlInfo(library, directive);
-      if (importPath == null) continue;
-      var importInfo = info[importPath.resolvedPath];
-      if (importInfo == null) continue;
-
-      String newUri = null;
-      if (importInfo.modified) {
-        // Use the generated URI for this file.
-        newUri = _pathMapper.importUrlFor(library, importInfo);
-      } else if (options.rewriteUrls) {
-        // Get the relative path to the input file.
-        newUri = _pathMapper.transformUrl(
-            library.dartCodeUrl.resolvedPath, directive.uri.value);
-      }
-      if (newUri != null) {
-        directive.uri = createStringLiteral(newUri);
-      }
-    }
-  }
-
   /** Run the analyzer on every input html file. */
   void _analyze() {
     var uniqueIds = new IntIterator();
@@ -552,75 +412,6 @@ class Compiler {
     }
   }
 
-  /** Emit the generated code corresponding to each input file. */
-  void _emit() {
-    for (var file in files) {
-      if (file.isDart || file.isStyleSheet) continue;
-      _time('Codegen', file.path, () {
-        var fileInfo = info[file.path];
-        _emitComponents(fileInfo);
-      });
-    }
-
-    var entryPoint = files[0];
-    assert(info[entryPoint.path].isEntryPoint);
-    _emitMainDart(entryPoint);
-    _emitMainHtml(entryPoint);
-
-    assert(_unqiueOutputs());
-  }
-
-  bool _unqiueOutputs() {
-    var seen = new Set();
-    for (var file in output) {
-      if (seen.contains(file.path)) {
-        throw new StateError('internal error: '
-            'duplicate output file ${file.path}. Files were: $output');
-      }
-      seen.add(file.path);
-    }
-    return true;
-  }
-
-  /** Emit the main .dart file. */
-  void _emitMainDart(SourceFile file) {
-    var fileInfo = info[file.path];
-
-    var codeInfo = fileInfo.userCode;
-    if (codeInfo != null) {
-      var printer = new NestedPrinter(0);
-      if (codeInfo.libraryName == null) {
-        printer.addLine('library ${fileInfo.libraryName};');
-      }
-      printer.add(codeInfo.code);
-      _emitFileAndSourceMaps(fileInfo, printer, fileInfo.dartCodeUrl);
-    }
-  }
-
-  // TODO(jmesserly): refactor this out of Compiler.
-  /** Generate an html file with the (trimmed down) main html page. */
-  void _emitMainHtml(SourceFile file) {
-    var fileInfo = info[file.path];
-
-    var bootstrapName = '${path.basename(file.path)}_bootstrap.dart';
-    var bootstrapPath = path.join(path.dirname(file.path), bootstrapName);
-    var bootstrapOutPath = _pathMapper.outputPath(bootstrapPath, '');
-    var bootstrapOutName = path.basename(bootstrapOutPath);
-    var bootstrapInfo = new FileInfo(new UrlInfo('', bootstrapPath, null));
-    var printer = generateBootstrapCode(bootstrapInfo, fileInfo, global,
-        _pathMapper, options);
-    printer.build(bootstrapOutPath);
-    output.add(new OutputFile(
-          bootstrapOutPath, printer.text, source: file.path));
-
-    var document = file.document;
-    var hasCss = _emitAllCss();
-    transformMainHtml(document, fileInfo, _pathMapper, hasCss,
-        options.rewriteUrls, _messages, global, bootstrapOutName);
-    output.add(new OutputFile(_pathMapper.outputPath(file.path, '.html'),
-        document.outerHtml, source: file.path));
-  }
-
   // TODO(jmesserly): refactor this and other CSS related transforms out of
   // Compiler.
   /**
@@ -647,13 +438,6 @@ class Compiler {
           css.write(emitStyleSheet(styleSheet, fileInfo));
           css.write('\n\n');
         }
-
-        // Emit the linked style sheet in the output directory.
-        if (fileInfo.inputUrl.url != _resetCssFile) {
-          var outCss = _pathMapper.outputPath(fileInfo.inputUrl.resolvedPath,
-              '');
-          output.add(new OutputFile(outCss, css.toString()));
-        }
       }
     }
 
@@ -712,49 +496,6 @@ class Compiler {
     return true;
   }
 
-  /** Emits the Dart code for all components in [fileInfo]. */
-  void _emitComponents(FileInfo fileInfo) {
-    for (var component in fileInfo.declaredComponents) {
-      // TODO(terry): Handle more than one stylesheet per component
-      if (component.styleSheets.length > 1 && options.emulateScopedCss) {
-        var span = component.externalFile != null
-            ? component.externalFile.sourceSpan : null;
-        _messages.warning(
-            'Component has more than one stylesheet - first stylesheet used.',
-            span);
-      }
-      var printer = emitPolymerElement(
-          component, _pathMapper, _edits[component.userCode], options);
-      _emitFileAndSourceMaps(component, printer, component.externalFile);
-    }
-  }
-
-  /**
-   * Emits a file that was created using [NestedPrinter] and it's corresponding
-   * source map file.
-   */
-  void _emitFileAndSourceMaps(
-      LibraryInfo lib, NestedPrinter printer, UrlInfo dartCodeUrl) {
-    // Bail if we had an error generating the code for the file.
-    if (printer == null) return;
-
-    var libPath = _pathMapper.outputLibraryPath(lib);
-    var dir = path.dirname(libPath);
-    var filename = path.basename(libPath);
-    printer.add('\n//# sourceMappingURL=$filename.map');
-    printer.build(libPath);
-    var sourcePath = dartCodeUrl != null ? dartCodeUrl.resolvedPath : null;
-    output.add(new OutputFile(libPath, printer.text, source: sourcePath));
-    // Fix-up the paths in the source map file
-    var sourceMap = json.parse(printer.map);
-    var urls = sourceMap['sources'];
-    for (int i = 0; i < urls.length; i++) {
-      urls[i] = path.relative(urls[i], from: dir);
-    }
-    output.add(new OutputFile(path.join(dir, '$filename.map'),
-          json.stringify(sourceMap)));
-  }
-
   _time(String logMessage, String filePath, callback(),
       {bool printTime: false}) {
     var message = new StringBuffer();