Remove some (but not all) unused methods in analyzer.

R=brianwilkerson@google.com
BUG=

Review URL: https://codereview.chromium.org//728513002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@41721 260f80e4-7a28-3924-810f-c04153c831b5

pkg/analyzer/lib/src/error.dart

@@ -6,7 +6,6 @@ library error;
 import 'dart:collection';
 
 import 'generated/error.dart';
-import 'generated/source.dart';
 
 /// The maximum line length when printing extracted source code when converting
 /// an [AnalyzerError] to a string.
@@ -92,13 +91,3 @@ class AnalyzerError implements Exception {
     return builder.toString();
   }
 }
-
-// A content receiver that collects all the content into a string.
-class _ContentReceiver implements Source_ContentReceiver {
-  final _buffer = new StringBuffer();
-
-  String get result => _buffer.toString();
-
-  void accept(String contents, _) =>
-    _buffer.write(contents.substring(0, contents.length));
-}

pkg/analyzer/lib/src/generated/constant.dart

@@ -1474,24 +1474,6 @@ class ConstantVisitor extends UnifyingAstVisitor<DartObjectImpl> {
     _error(node, null);
     return null;
   }
-
-  /**
-   * Return `true` if the given element represents the 'length' getter in class 'String'.
-   *
-   * @param element the element being tested.
-   * @return
-   */
-  bool _isStringLength(Element element) {
-    if (element is! PropertyAccessorElement) {
-      return false;
-    }
-    PropertyAccessorElement accessor = element as PropertyAccessorElement;
-    if (!accessor.isGetter || accessor.name != "length") {
-      return false;
-    }
-    Element parent = accessor.enclosingElement;
-    return parent == _typeProvider.stringType.element;
-  }
 }
 
 /**

pkg/analyzer/lib/src/generated/element.dart

@@ -6811,44 +6811,6 @@ class InterfaceTypeImpl extends TypeImpl implements InterfaceType {
     return new List.from(result);
   }
 
-  /**
-   * Return the "least upper bound" of the given types under the assumption that the types have the
-   * same element and differ only in terms of the type arguments. The resulting type is composed by
-   * comparing the corresponding type arguments, keeping those that are the same, and using
-   * 'dynamic' for those that are different.
-   *
-   * @param firstType the first type
-   * @param secondType the second type
-   * @return the "least upper bound" of the given types
-   */
-  static InterfaceType _leastUpperBound(InterfaceType firstType, InterfaceType secondType) {
-    if (firstType == secondType) {
-      return firstType;
-    }
-    List<DartType> firstArguments = firstType.typeArguments;
-    List<DartType> secondArguments = secondType.typeArguments;
-    int argumentCount = firstArguments.length;
-    if (argumentCount == 0) {
-      return firstType;
-    }
-    List<DartType> lubArguments = new List<DartType>(argumentCount);
-    for (int i = 0; i < argumentCount; i++) {
-      //
-      // Ideally we would take the least upper bound of the two argument types, but this can cause
-      // an infinite recursion (such as when finding the least upper bound of String and num).
-      //
-      if (firstArguments[i] == secondArguments[i]) {
-        lubArguments[i] = firstArguments[i];
-      }
-      if (lubArguments[i] == null) {
-        lubArguments[i] = DynamicTypeImpl.instance;
-      }
-    }
-    InterfaceTypeImpl lub = new InterfaceTypeImpl.con1(firstType.element);
-    lub.typeArguments = lubArguments;
-    return lub;
-  }
-
   /**
    * An array containing the actual types of the type arguments.
    */

pkg/analyzer/lib/src/generated/engine.dart

@@ -2804,15 +2804,6 @@ class AnalysisContextImpl implements InternalAnalysisContext {
     }
   }
 
-  /**
-   * Return a string with debugging information about the given source (the full name and
-   * modification stamp of the source).
-   *
-   * @param source the source for which a debugging string is to be produced
-   * @return debugging information about the given source
-   */
-  String _debuggingString(Source source) => "'${source.fullName}' [${getModificationStamp(source)}]";
-
   /**
    * Return an array containing all of the change notices that are waiting to be returned. If there
    * are no notices, then return either `null` or an empty array, depending on the value of
@@ -8586,25 +8577,6 @@ class DartEntry extends SourceEntry {
         || descriptor == RESOLVED_UNIT
         || descriptor == VERIFICATION_ERRORS;
   }
-
-  /**
-   * Given that the specified flag is being transitioned to the given state, set the value of the
-   * flag to the value that should be kept in the cache.
-   *
-   * @param index the index of the flag whose state is being set
-   * @param state the state to which the value is being transitioned
-   */
-  void _updateValueOfFlag(int index, CacheState state) {
-    if (state == CacheState.VALID) {
-      throw new IllegalArgumentException("Use setValue() to set the state to VALID");
-    } else if (state != CacheState.IN_PROCESS) {
-      //
-      // If the value is in process, we can leave the current value in the cache for any 'get'
-      // methods to access.
-      //
-      _setFlag(index, false);
-    }
-  }
 }
 
 /**
@@ -13138,15 +13110,6 @@ abstract class SourceEntry {
     return buffer.toString();
   }
 
-  /**
-   * Set the value of all of the flags with the given [indexes] to false.
-   */
-  void _clearFlags(List<int> indexes) {
-    for (int i = 0; i < indexes.length; i++) {
-      _flags = BooleanArray.set(_flags, indexes[i], false);
-    }
-  }
-
   /**
    * Flush the value of the data described by the [descriptor].
    */

pkg/analyzer/lib/src/generated/error_verifier.dart

@@ -5256,30 +5256,6 @@ class ErrorVerifier extends RecursiveAstVisitor<Object> {
     return false;
   }
 
-  /**
-   * Return `true` if the given type represents the class `Future` from the
-   * `dart:async` library.
-   *
-   * @param type the type to be tested
-   * @return `true` if the given type represents the class `Future` from the
-   *         `dart:async` library
-   */
-  bool _isFuture(DartType type) {
-    if (type is InterfaceType) {
-      InterfaceType interfaceType = type;
-      if (interfaceType.name == "Future") {
-        ClassElement element = interfaceType.element;
-        if (element != null) {
-          LibraryElement library = element.library;
-          if (library.name == "dart.async") {
-            return true;
-          }
-        }
-      }
-    }
-    return false;
-  }
-
   /**
    * Return `true` iff the passed [ClassElement] has a method, getter or setter that
    * matches the name of the passed [ExecutableElement] in either the class itself, or one of

pkg/analyzer/lib/src/generated/sdk_io.dart

@@ -511,13 +511,6 @@ class DirectoryBasedDartSdk implements DartSdk {
     }
   }
 
-  /**
-   * Ensure that the dart VM is executable. If it is not, make it executable and log that it was
-   * necessary for us to do so.
-   */
-  void _ensureVmIsExecutable() {
-  }
-
   /**
    * Return the name of the file containing the Dartium executable.
    *

pkg/analyzer/test/generated/all_the_rest.dart

@@ -10045,9 +10045,6 @@ $scriptBody
   XmlValidator_Tag _t(String tag, XmlValidator_Attributes attributes,
       String content, [List<XmlValidator_Tag> children = XmlValidator_Tag.EMPTY_LIST]) =>
       new XmlValidator_Tag(tag, attributes, content, children);
-  XmlValidator_Tag _t2(String tag, XmlValidator_Attributes attributes,
-      [List<XmlValidator_Tag> children = XmlValidator_Tag.EMPTY_LIST]) =>
-      new XmlValidator_Tag(tag, attributes, null, children);
   XmlValidator_Tag _t3(String tag, String content,
       [List<XmlValidator_Tag> children = XmlValidator_Tag.EMPTY_LIST]) =>
       new XmlValidator_Tag(tag, new XmlValidator_Attributes(), content, children);