pkg/docgen: moved model classes into minilibs

pkg/docgen/lib/src/models/variable.dart

+library docgen.models.variable;
+
+import '../exports/source_mirrors.dart';
+
+import '../library_helpers.dart';
+
+import 'class.dart';
+import 'doc_gen_type.dart';
+import 'dummy_mirror.dart';
+import 'indexable.dart';
+import 'owned_indexable.dart';
+
+
+/// A class containing properties of a Dart variable.
+class Variable extends OwnedIndexable {
+
+  bool isFinal;
+  bool isStatic;
+  bool isConst;
+  DocGenType type;
+  String _variableName;
+
+  factory Variable(String variableName, VariableMirror mirror,
+      Indexable owner) {
+    var variable = getDocgenObject(mirror);
+    if (variable is DummyMirror) {
+      return new Variable._(variableName, mirror, owner);
+    }
+    return variable;
+  }
+
+  Variable._(this._variableName, VariableMirror mirror, Indexable owner) :
+      super(mirror, owner) {
+    isFinal = mirror.isFinal;
+    isStatic = mirror.isStatic;
+    isConst = mirror.isConst;
+    type = new DocGenType(mirror.type, owner.owningLibrary);
+  }
+
+  String get name => _variableName;
+
+  /// Generates a map describing the [Variable] object.
+  Map toMap() => {
+    'name': name,
+    'qualifiedName': qualifiedName,
+    'comment': comment,
+    'final': isFinal,
+    'static': isStatic,
+    'constant': isConst,
+    'type': new List.filled(1, type.toMap()),
+    'annotations': annotations.map((a) => a.toMap()).toList()
+  };
+
+  String get typeName => 'property';
+
+  get comment {
+    if (commentField != null) return commentField;
+    if (owner is Class) {
+      (owner as Class).ensureComments();
+    }
+    return super.comment;
+  }
+
+  String findElementInScope(String name) {
+    var lookupFunc = determineLookupFunc(name);
+    var result = lookupFunc(mirror, name);
+    if (result != null) {
+      result = getDocgenObject(result);
+      if (result is DummyMirror) return packagePrefix + result.docName;
+      return result.packagePrefix + result.docName;
+    }
+
+    if (owner != null) {
+      var result = owner.findElementInScope(name);
+      if (result != null) {
+        return result;
+      }
+    }
+    return super.findElementInScope(name);
+  }
+
+  bool isValidMirror(DeclarationMirror mirror) => mirror is VariableMirror;
+}