Finish modifying analysis server to make use of code generation.

pkg/analysis_server/lib/src/protocol2.dart

Index: pkg/analysis_server/lib/src/protocol2.dart
diff --git a/pkg/analysis_server/lib/src/protocol2.dart b/pkg/analysis_server/lib/src/protocol2.dart
deleted file mode 100644
index 8817570731b9735b4850b677556899f60c8a2f17..0000000000000000000000000000000000000000
--- a/pkg/analysis_server/lib/src/protocol2.dart
+++ /dev/null
@@ -1,628 +0,0 @@
-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library protocol2;
-
-import 'dart:convert';
-
-import 'package:analysis_server/src/computer/element.dart' show
-    elementFromEngine;
-import 'package:analysis_server/src/services/correction/fix.dart' show Fix;
-import 'package:analysis_server/src/search/search_result.dart' show
-    searchResultFromMatch;
-import 'package:analysis_server/src/services/json.dart';
-import 'package:analysis_server/src/services/search/search_engine.dart' as
-    engine;
-import 'package:analyzer/src/generated/ast.dart' as engine;
-import 'package:analyzer/src/generated/element.dart' as engine;
-import 'package:analyzer/src/generated/engine.dart' as engine;
-import 'package:analyzer/src/generated/error.dart' as engine;
-import 'package:analyzer/src/generated/source.dart' as engine;
-
-import 'protocol.dart';
-
-part 'generated_protocol.dart';
-
-/**
- * Translate the input [map], applying [keyCallback] to all its keys, and
- * [valueCallback] to all its values.
- */
-mapMap(Map map, {dynamic keyCallback(key), dynamic valueCallback(value)}) {
-  Map result = {};
-  map.forEach((key, value) {
-    if (keyCallback != null) {
-      key = keyCallback(key);
-    }
-    if (valueCallback != null) {
-      value = valueCallback(value);
-    }
-    result[key] = value;
-  });
-  return result;
-}
-
-/**
- * Adds the given [sourceEdits] to the list in [sourceFileEdit].
- */
-void _addAllEditsForSource(SourceFileEdit sourceFileEdit,
-    Iterable<SourceEdit> edits) {
-  edits.forEach(sourceFileEdit.add);
-}
-
-/**
- * Adds the given [sourceEdit] to the list in [sourceFileEdit].
- */
-void _addEditForSource(SourceFileEdit sourceFileEdit, SourceEdit sourceEdit) {
-  List<SourceEdit> edits = sourceFileEdit.edits;
-  int index = 0;
-  while (index < edits.length && edits[index].offset > sourceEdit.offset) {
-    index++;
-  }
-  edits.insert(index, sourceEdit);
-}
-
-/**
- * Adds [edit] to the [FileEdit] for the given [file].
- */
-void _addEditToSourceChange(SourceChange change, String file, SourceEdit edit) {
-  SourceFileEdit fileEdit = change.getFileEdit(file);
-  if (fileEdit == null) {
-    fileEdit = new SourceFileEdit(file);
-    change.addFileEdit(fileEdit);
-  }
-  fileEdit.add(edit);
-}
-
-/**
- * Returns the [FileEdit] for the given [file], maybe `null`.
- */
-SourceFileEdit _getChangeFileEdit(SourceChange change, String file) {
-  for (SourceFileEdit fileEdit in change.edits) {
-    if (fileEdit.file == file) {
-      return fileEdit;
-    }
-  }
-  return null;
-}
-
-/**
- * Create an AnalysisError based on error information from the analyzer
- * engine.  Access via AnalysisError.fromEngine().
- */
-AnalysisError _analysisErrorFromEngine(engine.LineInfo lineInfo,
-    engine.AnalysisError error) {
-  engine.ErrorCode errorCode = error.errorCode;
-  // prepare location
-  Location location;
-  {
-    String file = error.source.fullName;
-    int offset = error.offset;
-    int length = error.length;
-    int startLine = -1;
-    int startColumn = -1;
-    if (lineInfo != null) {
-      engine.LineInfo_Location lineLocation = lineInfo.getLocation(offset);
-      if (lineLocation != null) {
-        startLine = lineLocation.lineNumber;
-        startColumn = lineLocation.columnNumber;
-      }
-    }
-    location = new Location(file, offset, length, startLine, startColumn);
-  }
-  // done
-  var severity = new ErrorSeverity(errorCode.errorSeverity.name);
-  var type = new ErrorType(errorCode.type.name);
-  String message = error.message;
-  String correction = error.correction;
-  return new AnalysisError(
-      severity,
-      type,
-      location,
-      message,
-      correction: correction);
-}
-
-/**
- * Returns a list of AnalysisErrors correponding to the given list of Engine
- * errors.  Access via AnalysisError.listFromEngine().
- */
-List<AnalysisError> _analysisErrorListFromEngine(engine.LineInfo lineInfo,
-    List<engine.AnalysisError> errors) {
-  return errors.map((engine.AnalysisError error) {
-    return new AnalysisError.fromEngine(lineInfo, error);
-  }).toList();
-}
-
-/**
- * Get the result of applying the edit to the given [code].  Access via
- * SourceEdit.apply().
- */
-String _applyEdit(String code, SourceEdit edit) {
-  return code.substring(0, edit.offset) +
-      edit.replacement +
-      code.substring(edit.end);
-}
-
-/**
- * Get the result of applying a set of [edits] to the given [code].  Edits
- * are applied in the order they appear in [edits].  Access via
- * SourceEdit.applySequence().
- */
-String _applySequence(String code, Iterable<SourceEdit> edits) {
-  edits.forEach((SourceEdit edit) {
-    code = edit.apply(code);
-  });
-  return code;
-}
-
-/**
- * Map an element kind from the analyzer engine to a [CompletionSuggestionKind].
- */
-CompletionSuggestionKind _completionSuggestionKindFromElementKind(engine.ElementKind kind) {
-  //    ElementKind.ANGULAR_FORMATTER,
-  //    ElementKind.ANGULAR_COMPONENT,
-  //    ElementKind.ANGULAR_CONTROLLER,
-  //    ElementKind.ANGULAR_DIRECTIVE,
-  //    ElementKind.ANGULAR_PROPERTY,
-  //    ElementKind.ANGULAR_SCOPE_PROPERTY,
-  //    ElementKind.ANGULAR_SELECTOR,
-  //    ElementKind.ANGULAR_VIEW,
-  if (kind == engine.ElementKind.CLASS) return CompletionSuggestionKind.CLASS;
-  //    ElementKind.COMPILATION_UNIT,
-  if (kind == engine.ElementKind.CONSTRUCTOR) return CompletionSuggestionKind.CONSTRUCTOR;
-  //    ElementKind.DYNAMIC,
-  //    ElementKind.EMBEDDED_HTML_SCRIPT,
-  //    ElementKind.ERROR,
-  //    ElementKind.EXPORT,
-  //    ElementKind.EXTERNAL_HTML_SCRIPT,
-  if (kind == engine.ElementKind.FIELD) return CompletionSuggestionKind.FIELD;
-  if (kind == engine.ElementKind.FUNCTION) return CompletionSuggestionKind.FUNCTION;
-  if (kind == engine.ElementKind.FUNCTION_TYPE_ALIAS) return CompletionSuggestionKind.FUNCTION_TYPE_ALIAS;
-  if (kind == engine.ElementKind.GETTER) return CompletionSuggestionKind.GETTER;
-  //    ElementKind.HTML,
-  if (kind == engine.ElementKind.IMPORT) return CompletionSuggestionKind.IMPORT;
-  //    ElementKind.LABEL,
-  //    ElementKind.LIBRARY,
-  if (kind == engine.ElementKind.LOCAL_VARIABLE) return CompletionSuggestionKind.LOCAL_VARIABLE;
-  if (kind == engine.ElementKind.METHOD) return CompletionSuggestionKind.METHOD;
-  //    ElementKind.NAME,
-  if (kind == engine.ElementKind.PARAMETER) return CompletionSuggestionKind.PARAMETER;
-  //    ElementKind.POLYMER_ATTRIBUTE,
-  //    ElementKind.POLYMER_TAG_DART,
-  //    ElementKind.POLYMER_TAG_HTML,
-  //    ElementKind.PREFIX,
-  if (kind == engine.ElementKind.SETTER) return CompletionSuggestionKind.SETTER;
-  if (kind == engine.ElementKind.TOP_LEVEL_VARIABLE) return CompletionSuggestionKind.TOP_LEVEL_VARIABLE;
-  //    ElementKind.TYPE_PARAMETER,
-  //    ElementKind.UNIVERSE
-  throw new ArgumentError('Unknown CompletionSuggestionKind for: $kind');
-}
-
-/**
- * Create an ElementKind based on a value from the analyzer engine.  Access
- * this function via new ElementKind.fromEngine().
- */
-ElementKind _elementKindFromEngine(engine.ElementKind kind) {
-  if (kind == engine.ElementKind.CLASS) {
-    return ElementKind.CLASS;
-  }
-  if (kind == engine.ElementKind.COMPILATION_UNIT) {
-    return ElementKind.COMPILATION_UNIT;
-  }
-  if (kind == engine.ElementKind.CONSTRUCTOR) {
-    return ElementKind.CONSTRUCTOR;
-  }
-  if (kind == engine.ElementKind.FIELD) {
-    return ElementKind.FIELD;
-  }
-  if (kind == engine.ElementKind.FUNCTION) {
-    return ElementKind.FUNCTION;
-  }
-  if (kind == engine.ElementKind.FUNCTION_TYPE_ALIAS) {
-    return ElementKind.FUNCTION_TYPE_ALIAS;
-  }
-  if (kind == engine.ElementKind.GETTER) {
-    return ElementKind.GETTER;
-  }
-  if (kind == engine.ElementKind.LIBRARY) {
-    return ElementKind.LIBRARY;
-  }
-  if (kind == engine.ElementKind.LOCAL_VARIABLE) {
-    return ElementKind.LOCAL_VARIABLE;
-  }
-  if (kind == engine.ElementKind.METHOD) {
-    return ElementKind.METHOD;
-  }
-  if (kind == engine.ElementKind.PARAMETER) {
-    return ElementKind.PARAMETER;
-  }
-  if (kind == engine.ElementKind.SETTER) {
-    return ElementKind.SETTER;
-  }
-  if (kind == engine.ElementKind.TOP_LEVEL_VARIABLE) {
-    return ElementKind.TOP_LEVEL_VARIABLE;
-  }
-  if (kind == engine.ElementKind.TYPE_PARAMETER) {
-    return ElementKind.TYPE_PARAMETER;
-  }
-  return ElementKind.UNKNOWN;
-}
-
-/**
- * Compare the lists [listA] and [listB], using [itemEqual] to compare
- * list elements.
- */
-bool _listEqual(List listA, List listB, bool itemEqual(a, b)) {
-  if (listA.length != listB.length) {
-    return false;
-  }
-  for (int i = 0; i < listA.length; i++) {
-    if (!itemEqual(listA[i], listB[i])) {
-      return false;
-    }
-  }
-  return true;
-}
-
-/**
- * Creates a new [Location].
- */
-Location _locationForArgs(engine.AnalysisContext context, engine.Source source,
-    engine.SourceRange range) {
-  int startLine = 0;
-  int startColumn = 0;
-  {
-    engine.LineInfo lineInfo = context.getLineInfo(source);
-    if (lineInfo != null) {
-      engine.LineInfo_Location offsetLocation =
-          lineInfo.getLocation(range.offset);
-      startLine = offsetLocation.lineNumber;
-      startColumn = offsetLocation.columnNumber;
-    }
-  }
-  return new Location(
-      source.fullName,
-      range.offset,
-      range.length,
-      startLine,
-      startColumn);
-}
-
-/**
- * Creates a new [Location] for the given [engine.Element].
- */
-Location _locationFromElement(engine.Element element) {
-  engine.AnalysisContext context = element.context;
-  engine.Source source = element.source;
-  String name = element.displayName;
-  int offset = element.nameOffset;
-  int length = name != null ? name.length : 0;
-  if (element is engine.CompilationUnitElement) {
-    offset = 0;
-    length = 0;
-  }
-  engine.SourceRange range = new engine.SourceRange(offset, length);
-  return _locationForArgs(context, source, range);
-}
-
-
-/**
- * Creates a new [Location] for the given [engine.SearchMatch].
- */
-Location _locationFromMatch(engine.SearchMatch match) {
-  engine.Element enclosingElement = match.element;
-  return _locationForArgs(
-      enclosingElement.context,
-      enclosingElement.source,
-      match.sourceRange);
-}
-
-
-/**
- * Creates a new [Location] for the given [engine.AstNode].
- */
-Location _locationFromNode(engine.AstNode node) {
-  engine.CompilationUnit unit =
-      node.getAncestor((node) => node is engine.CompilationUnit);
-  engine.CompilationUnitElement unitElement = unit.element;
-  engine.AnalysisContext context = unitElement.context;
-  engine.Source source = unitElement.source;
-  engine.SourceRange range = new engine.SourceRange(node.offset, node.length);
-  return _locationForArgs(context, source, range);
-}
-
-/**
- * Creates a new [Location] for the given [engine.CompilationUnit].
- */
-Location _locationFromUnit(engine.CompilationUnit unit,
-    engine.SourceRange range) {
-  engine.CompilationUnitElement unitElement = unit.element;
-  engine.AnalysisContext context = unitElement.context;
-  engine.Source source = unitElement.source;
-  return _locationForArgs(context, source, range);
-}
-
-
-/**
- * Compare the maps [mapA] and [mapB], using [valueEqual] to compare map
- * values.
- */
-bool _mapEqual(Map mapA, Map mapB, bool valueEqual(a, b)) {
-  if (mapA.length != mapB.length) {
-    return false;
-  }
-  for (var key in mapA.keys) {
-    if (!mapB.containsKey(key)) {
-      return false;
-    }
-    if (!valueEqual(mapA[key], mapB[key])) {
-      return false;
-    }
-  }
-  return true;
-}
-
-
-RefactoringProblemSeverity
-    _maxRefactoringProblemSeverity(RefactoringProblemSeverity a,
-    RefactoringProblemSeverity b) {
-  if (b == null) {
-    return a;
-  }
-  if (a == null) {
-    return b;
-  } else if (a == RefactoringProblemSeverity.INFO) {
-    return b;
-  } else if (a == RefactoringProblemSeverity.WARNING) {
-    if (b == RefactoringProblemSeverity.ERROR ||
-        b == RefactoringProblemSeverity.FATAL) {
-      return b;
-    }
-  } else if (a == RefactoringProblemSeverity.ERROR) {
-    if (b == RefactoringProblemSeverity.FATAL) {
-      return b;
-    }
-  }
-  return a;
-}
-
-/**
- * Create an OverriddenMember based on an element from the analyzer engine.
- */
-OverriddenMember _overriddenMemberFromEngine(engine.Element member) {
-  Element element = elementFromEngine(member);
-  String className = member.enclosingElement.displayName;
-  return new OverriddenMember(element, className);
-}
-
-/**
- * Create a SearchResultKind based on a value from the search engine.
- */
-SearchResultKind _searchResultKindFromEngine(engine.MatchKind kind) {
-  if (kind == engine.MatchKind.DECLARATION) {
-    return SearchResultKind.DECLARATION;
-  }
-  if (kind == engine.MatchKind.READ) {
-    return SearchResultKind.READ;
-  }
-  if (kind == engine.MatchKind.READ_WRITE) {
-    return SearchResultKind.READ_WRITE;
-  }
-  if (kind == engine.MatchKind.WRITE) {
-    return SearchResultKind.WRITE;
-  }
-  if (kind == engine.MatchKind.INVOCATION) {
-    return SearchResultKind.INVOCATION;
-  }
-  if (kind == engine.MatchKind.REFERENCE) {
-    return SearchResultKind.REFERENCE;
-  }
-  return SearchResultKind.UNKNOWN;
-}
-
-
-/**
- * Type of callbacks used to decode parts of JSON objects.  [jsonPath] is a
- * string describing the part of the JSON object being decoded, and [value] is
- * the part to decode.
- */
-typedef Object JsonDecoderCallback(String jsonPath, Object value);
-
-/**
- * Base class for decoding JSON objects.  The derived class must implement
- * error reporting logic.
- */
-abstract class JsonDecoder {
-  /**
-   * Create an exception to throw if the JSON object at [jsonPath] fails to
-   * match the API definition of [expected].
-   */
-  dynamic mismatch(String jsonPath, String expected);
-
-  /**
-   * Create an exception to throw if the JSON object at [jsonPath] is missing
-   * the key [key].
-   */
-  dynamic missingKey(String jsonPath, String key);
-
-  /**
-   * Decode a JSON object that is expected to be a boolean.  The strings "true"
-   * and "false" are also accepted.
-   */
-  bool _decodeBool(String jsonPath, Object json) {
-    if (json is bool) {
-      return json;
-    } else if (json == 'true') {
-      return true;
-    } else if (json == 'false') {
-      return false;
-    }
-    throw mismatch(jsonPath, 'bool');
-  }
-
-  /**
-   * Decode a JSON object that is expected to be an integer.  A string
-   * representation of an integer is also accepted.
-   */
-  int _decodeInt(String jsonPath, Object json) {
-    if (json is int) {
-      return json;
-    } else if (json is String) {
-      return int.parse(json, onError: (String value) {
-        throw mismatch(jsonPath, 'int');
-      });
-    }
-    throw mismatch(jsonPath, 'int');
-  }
-
-  /**
-   * Decode a JSON object that is expected to be a List.  [decoder] is used to
-   * decode the items in the list.
-   */
-  List _decodeList(String jsonPath, Object json,
-      [JsonDecoderCallback decoder]) {
-    if (json == null) {
-      return [];
-    } else if (json is List) {
-      List result = [];
-      for (int i = 0; i < json.length; i++) {
-        result.add(decoder('$jsonPath[$i]', json[i]));
-      }
-      return result;
-    } else {
-      throw mismatch(jsonPath, 'List');
-    }
-  }
-
-  /**
-   * Decode a JSON object that is expected to be a Map.  [keyDecoder] is used
-   * to decode the keys, and [valueDecoder] is used to decode the values.
-   */
-  Map _decodeMap(String jsonPath, Object json, {JsonDecoderCallback keyDecoder,
-      JsonDecoderCallback valueDecoder}) {
-    if (json == null) {
-      return {};
-    } else if (json is Map) {
-      Map result = {};
-      json.forEach((String key, value) {
-        Object decodedKey;
-        if (keyDecoder != null) {
-          decodedKey = keyDecoder('$jsonPath.key', key);
-        } else {
-          decodedKey = key;
-        }
-        if (valueDecoder != null) {
-          value = valueDecoder('$jsonPath[${JSON.encode(key)}]', value);
-        }
-        result[decodedKey] = value;
-      });
-      return result;
-    } else {
-      throw mismatch(jsonPath, 'Map');
-    }
-  }
-
-  /**
-   * Decode a JSON object that is expected to be a string.
-   */
-  String _decodeString(String jsonPath, Object json) {
-    if (json is String) {
-      return json;
-    } else {
-      throw mismatch(jsonPath, 'String');
-    }
-  }
-
-  /**
-   * Decode a JSON object that is expected to be one of several choices,
-   * where the choices are disambiguated by the contents of the field [field].
-   * [decoders] is a map from each possible string in the field to the decoder
-   * that should be used to decode the JSON object.
-   */
-  Object _decodeUnion(String jsonPath, Map json, String field, Map<String,
-      JsonDecoderCallback> decoders) {
-    if (json is Map) {
-      if (!json.containsKey(field)) {
-        throw missingKey(jsonPath, field);
-      }
-      var disambiguatorPath = '$jsonPath[${JSON.encode(field)}]';
-      String disambiguator = _decodeString(disambiguatorPath, json[field]);
-      if (!decoders.containsKey(disambiguator)) {
-        throw mismatch(disambiguatorPath, 'One of: ${decoders.keys.toList()}');
-      }
-      return decoders[disambiguator](jsonPath, json);
-    } else {
-      throw mismatch(jsonPath, 'Map');
-    }
-  }
-}
-
-/**
- * JsonDecoder for decoding requests.  Errors are reporting by throwing a
- * [RequestFailure].
- */
-class RequestDecoder extends JsonDecoder {
-  /**
-   * The request being deserialized.
-   */
-  final Request _request;
-
-  RequestDecoder(this._request);
-
-  @override
-  dynamic mismatch(String jsonPath, String expected) {
-    return new RequestFailure(
-        new Response.invalidParameter(_request, jsonPath, 'be $expected'));
-  }
-
-  @override
-  dynamic missingKey(String jsonPath, String key) {
-    return new RequestFailure(
-        new Response.invalidParameter(
-            _request,
-            jsonPath,
-            'contain key ${JSON.encode(key)}'));
-  }
-}
-
-/**
- * JsonDecoder for decoding responses from the server.  This is intended to be
- * used only for testing.  Errors are reported using bare [Exception] objects.
- */
-class ResponseDecoder extends JsonDecoder {
-  @override
-  dynamic mismatch(String jsonPath, String expected) {
-    return new Exception('Expected $expected at $jsonPath');
-  }
-
-  @override
-  dynamic missingKey(String jsonPath, String key) {
-    return new Exception('Missing key $key at $jsonPath');
-  }
-}
-
-/**
- * Jenkins hash function, optimized for small integers.  Borrowed from
- * sdk/lib/math/jenkins_smi_hash.dart.
- *
- * TODO(paulberry): Move to somewhere that can be shared with other code.
- */
-class _JenkinsSmiHash {
-  static int combine(int hash, int value) {
-    hash = 0x1fffffff & (hash + value);
-    hash = 0x1fffffff & (hash + ((0x0007ffff & hash) << 10));
-    return hash ^ (hash >> 6);
-  }
-
-  static int finish(int hash) {
-    hash = 0x1fffffff & (hash + ((0x03ffffff & hash) << 3));
-    hash = hash ^ (hash >> 11);
-    return 0x1fffffff & (hash + ((0x00003fff & hash) << 15));
-  }
-
-  static int hash2(a, b) => finish(combine(combine(0, a), b));
-
-  static int hash4(a, b, c, d) =>
-      finish(combine(combine(combine(combine(0, a), b), c), d));
-}