Quick Assist for creating a constructor for selected final fields.

pkg/analysis_server/lib/src/services/correction/fix_internal.dart

Index: pkg/analysis_server/lib/src/services/correction/fix_internal.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
index a887ed69f0db5253e3c0d24a592a15292fc359bd..134dabc0406070ad4c1ae5e06820c4a28cfcdf89 100644
--- a/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
+++ b/pkg/analysis_server/lib/src/services/correction/fix_internal.dart
@@ -382,8 +382,8 @@ class FixProcessor {
     ClassElement targetElement = targetType.element as ClassElement;
     String targetFile = targetElement.source.fullName;
     ClassDeclaration targetClass = targetElement.node;
-    _ConstructorLocation targetLocation =
-        _prepareNewConstructorLocation(targetClass);
+    ConstructorLocation targetLocation =
+        utils.findNewConstructorLocation(targetClass);
     // build method source
     SourceBuilder sb = new SourceBuilder(targetFile, targetLocation.offset);
     {
@@ -436,8 +436,8 @@ class FixProcessor {
     ClassElement targetElement = targetType.element as ClassElement;
     String targetFile = targetElement.source.fullName;
     ClassDeclaration targetClass = targetElement.node;
-    _ConstructorLocation targetLocation =
-        _prepareNewConstructorLocation(targetClass);
+    ConstructorLocation targetLocation =
+        utils.findNewConstructorLocation(targetClass);
     // build method source
     SourceBuilder sb = new SourceBuilder(targetFile, targetLocation.offset);
     {
@@ -572,8 +572,8 @@ class FixProcessor {
         argumentsBuffer.append(parameterName);
       }
       // add proposal
-      _ConstructorLocation targetLocation =
-          _prepareNewConstructorLocation(targetClassNode);
+      ConstructorLocation targetLocation =
+          utils.findNewConstructorLocation(targetClassNode);
       SourceBuilder sb = new SourceBuilder(file, targetLocation.offset);
       {
         String indent = utils.getIndent(1);
@@ -2128,29 +2128,6 @@ class FixProcessor {
     return node is SimpleIdentifier && node.name == 'await';
   }
 
-  _ConstructorLocation _prepareNewConstructorLocation(
-      ClassDeclaration classDeclaration) {
-    List<ClassMember> members = classDeclaration.members;
-    // find the last field/constructor
-    ClassMember lastFieldOrConstructor = null;
-    for (ClassMember member in members) {
-      if (member is FieldDeclaration || member is ConstructorDeclaration) {
-        lastFieldOrConstructor = member;
-      } else {
-        break;
-      }
-    }
-    // after the last field/constructor
-    if (lastFieldOrConstructor != null) {
-      return new _ConstructorLocation(
-          eol + eol, lastFieldOrConstructor.end, '');
-    }
-    // at the beginning of the class
-    String suffix = members.isEmpty ? '' : eol;
-    return new _ConstructorLocation(
-        eol, classDeclaration.leftBracket.end, suffix);
-  }
-
   _FieldLocation _prepareNewFieldLocation(ClassDeclaration classDeclaration) {
     String indent = utils.getIndent(1);
     // find the last field
@@ -2305,17 +2282,6 @@ class _ClosestElementFinder {
 }
 
 /**
- * Describes the location for a newly created [ConstructorDeclaration].
- */
-class _ConstructorLocation {
-  final String prefix;
-  final int offset;
-  final String suffix;
-
-  _ConstructorLocation(this.prefix, this.offset, this.suffix);
-}
-
-/**
  * Describes the location for a newly created [FieldDeclaration].
  */
 class _FieldLocation {