Semantic highlight async/await/sync/yield.

pkg/analysis_server/lib/src/computer/computer_highlights.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 computer.highlights;
 
 import 'package:analysis_server/src/protocol.dart' hide Element;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/scanner.dart';
@@ skipping 353 matching lines @@
     return super.visitAsExpression(node);
   }
 
   @override
   Object visitAssertStatement(AssertStatement node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
     return super.visitAssertStatement(node);
   }
 
   @override
+  Object visitAwaitExpression(AwaitExpression node) {
+    computer._addRegion_token(node.awaitKeyword, HighlightRegionType.BUILT_IN);
+    return super.visitAwaitExpression(node);
+  }
+
+  @override
+  Object visitBlockFunctionBody(BlockFunctionBody node) {
+    _addRegions_functionBody(node);
+    return super.visitBlockFunctionBody(node);
+  }
+
+  @override
   Object visitBooleanLiteral(BooleanLiteral node) {
     computer._addRegion_node(node, HighlightRegionType.KEYWORD);
     computer._addRegion_node(node, HighlightRegionType.LITERAL_BOOLEAN);
     return super.visitBooleanLiteral(node);
   }
 
   @override
   Object visitBreakStatement(BreakStatement node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
     return super.visitBreakStatement(node);
@@ skipping 60 matching lines @@
   }
 
   @override
   Object visitExportDirective(ExportDirective node) {
     computer._addRegion_node(node, HighlightRegionType.DIRECTIVE);
     computer._addRegion_token(node.keyword, HighlightRegionType.BUILT_IN);
     return super.visitExportDirective(node);
   }
 
   @override
+  Object visitExpressionFunctionBody(ExpressionFunctionBody node) {
+    _addRegions_functionBody(node);
+    return super.visitExpressionFunctionBody(node);
+  }
+
+  @override
   Object visitFieldDeclaration(FieldDeclaration node) {
     computer._addRegion_token(node.staticKeyword, HighlightRegionType.BUILT_IN);
     return super.visitFieldDeclaration(node);
   }
 
   @override
   Object visitForEachStatement(ForEachStatement node) {
     computer._addRegion_token(node.forKeyword, HighlightRegionType.KEYWORD);
     computer._addRegion_token(node.inKeyword, HighlightRegionType.KEYWORD);
     return super.visitForEachStatement(node);
@@ skipping 223 matching lines @@
   Object visitWhileStatement(WhileStatement node) {
     computer._addRegion_token(node.keyword, HighlightRegionType.KEYWORD);
     return super.visitWhileStatement(node);
   }
 
   @override
   Object visitWithClause(WithClause node) {
     computer._addRegion_token(node.withKeyword, HighlightRegionType.KEYWORD);
     return super.visitWithClause(node);
   }
+
+  @override
+  Object visitYieldStatement(YieldStatement node) {
+    Token keyword = node.yieldKeyword;
+    Token star = node.star;
+    int offset = keyword.offset;
+    int end = star != null ? star.end : keyword.end;
+    computer._addRegion(offset, end - offset, HighlightRegionType.BUILT_IN);
+    return super.visitYieldStatement(node);
+  }
+
+  void _addRegions_functionBody(FunctionBody node) {
+    Token keyword = node.keyword;
+    if (keyword != null) {
+      Token star = node.star;
+      int offset = keyword.offset;
+      int end = star != null ? star.end : keyword.end;
+      computer._addRegion(offset, end - offset, HighlightRegionType.BUILT_IN);
+    }
+  }
 }