suppress suggestions in string literals

pkg/analysis_server/lib/src/services/completion/local_computer.dart

 // 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 services.completion.computer.dart.local;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart' as protocol show Element,
     ElementKind;
@@ skipping 67 matching lines @@
               }
             });
           }
         }
       }
     });
     visitNode(node);
   }
 
   @override
-  visitCombinator(Combinator node) {
-    // Handled by ImportedComputer
-  }
-
-  @override
   visitCascadeExpression(CascadeExpression node) {
     Expression target = node.target;
     // This computer handles the expression
     // while InvocationComputer handles the cascade selector
     if (target != null && request.offset <= target.end) {
       visitNode(node);
     }
   }
 
   @override
   visitCatchClause(CatchClause node) {
     _addParamSuggestion(node.exceptionParameter, node.exceptionType);
     _addParamSuggestion(node.stackTraceParameter, STACKTRACE_TYPE);
     visitNode(node);
   }
 
   @override
   visitClassDeclaration(ClassDeclaration node) {
     node.members.forEach((ClassMember classMbr) {
       if (classMbr is FieldDeclaration) {
         _addFieldSuggestions(node, classMbr);
       } else if (classMbr is MethodDeclaration) {
         _addMethodSuggestion(node, classMbr);
       }
     });
     visitNode(node);
   }
 
   @override
+  visitCombinator(Combinator node) {
+    // Handled by ImportedComputer
+  }
+
+  @override
   visitCompilationUnit(CompilationUnit node) {
     node.declarations.forEach((Declaration declaration) {
       if (declaration is ClassDeclaration) {
         _addClassSuggestion(declaration);
       } else if (declaration is EnumDeclaration) {
 //        _addSuggestion(d.name, CompletionSuggestionKind.ENUM);
       } else if (declaration is FunctionDeclaration) {
         _addFunctionSuggestion(declaration);
       } else if (declaration is TopLevelVariableDeclaration) {
         _addTopLevelVarSuggestions(declaration.variables);
@@ skipping 60 matching lines @@
     visitNode(node);
   }
 
   @override
   visitFunctionExpression(FunctionExpression node) {
     _addParamListSuggestions(node.parameters);
     visitNode(node);
   }
 
   @override
+  visitInterpolationExpression(InterpolationExpression node) {
+    visitNode(node);
+  }
+
+  @override
   visitMethodDeclaration(MethodDeclaration node) {
     _addParamListSuggestions(node.parameters);
     visitNode(node);
   }
 
   @override
   visitNamespaceDirective(NamespaceDirective node) {
     // No suggestions
   }
 
   @override
   visitNode(AstNode node) {
     node.parent.accept(this);
   }
 
   @override
   visitPrefixedIdentifier(PrefixedIdentifier node) {
     // InvocationComputer adds suggestions for prefixed elements
     // but this computer adds suggestions for the prefix itself
     SimpleIdentifier prefix = node.prefix;
     if (prefix == null || request.offset <= prefix.end) {
       visitNode(node);
     }
   }
 
   @override
+  visitStringLiteral(StringLiteral node) {
+    // ignore
+  }
+
+  @override
   visitTypeName(TypeName node) {
     // If suggesting completions within a TypeName node
     // then limit suggestions to only types
     typesOnly = true;
     return visitNode(node);
   }
 
   @override
   visitVariableDeclaration(VariableDeclaration node) {
     // Do not add suggestions if editing the name in a var declaration
@@ skipping 243 matching lines @@
     if (name == null || name.length <= 0) {
       return DYNAMIC;
     }
     TypeArgumentList typeArgs = type.typeArguments;
     if (typeArgs != null) {
       //TODO (danrubel) include type arguments
     }
     return name;
   }
 }