Handle prefix as expression in SendSet.

tests/compiler/dart2js/semantic_visitor_test_send_data.dart

Index: tests/compiler/dart2js/semantic_visitor_test_send_data.dart
diff --git a/tests/compiler/dart2js/semantic_visitor_test_send_data.dart b/tests/compiler/dart2js/semantic_visitor_test_send_data.dart
index cd03cd875fd0a0071127db16ee88ffac938b182c..a0fd164a36e954bf70e9ef46465e6f5fd2159dbd 100644
--- a/tests/compiler/dart2js/semantic_visitor_test_send_data.dart
+++ b/tests/compiler/dart2js/semantic_visitor_test_send_data.dart
@@ -803,6 +803,13 @@ const Map<String, List<Test>> SEND_TESTS = const {
         const Visit(VisitKind.VISIT_TOP_LEVEL_FIELD_SET,
                     element: 'field(o)',
                     rhs: '42')),
+    const Test.prefix(
+        '''
+        ''',
+        'm() { p = 42; }',
+        const Visit(VisitKind.ERROR_INVALID_SET,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    rhs: '42')),
     const Test(
         '''
         final o = 0;
@@ -851,6 +858,13 @@ const Map<String, List<Test>> SEND_TESTS = const {
         const Visit(VisitKind.VISIT_TOP_LEVEL_FIELD_INVOKE,
                     element: 'field(o)',
                     arguments: '(null,42)')),
+    const Test.prefix(
+        '''
+        ''',
+        'm() { p(null, 42); }',
+        const Visit(VisitKind.ERROR_INVALID_INVOKE,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    arguments: '(null,42)')),
     const Test(
         '''
         m() => o;
@@ -2414,6 +2428,16 @@ const Map<String, List<Test>> SEND_TESTS = const {
                     error: MessageKind.NO_INSTANCE_AVAILABLE,
                     operator: '+=',
                     rhs: '42')),
+    const Test.prefix(
+        '''
+        ''',
+        '''
+        m() { p += 42; }
+        ''',
+        const Visit(VisitKind.ERROR_INVALID_COMPOUND,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    operator: '+=',
+                    rhs: '42')),
     const Test(
         '''
         class C {
@@ -2933,6 +2957,15 @@ const Map<String, List<Test>> SEND_TESTS = const {
         const Visit(VisitKind.ERROR_INVALID_PREFIX,
                     error: MessageKind.NO_INSTANCE_AVAILABLE,
                     operator: '++')),
+    const Test.prefix(
+        '''
+        ''',
+        '''
+        m() { ++p; }
+        ''',
+        const Visit(VisitKind.ERROR_INVALID_PREFIX,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    operator: '++')),
     const Test(
         '''
         class C {
@@ -3318,6 +3351,15 @@ const Map<String, List<Test>> SEND_TESTS = const {
         const Visit(VisitKind.ERROR_INVALID_POSTFIX,
                     error: MessageKind.NO_INSTANCE_AVAILABLE,
                     operator: '--')),
+    const Test.prefix(
+        '''
+        ''',
+        '''
+        m() { p--; }
+        ''',
+        const Visit(VisitKind.ERROR_INVALID_POSTFIX,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    operator: '--')),
     const Test(
         '''
         class C {
@@ -4122,6 +4164,15 @@ const Map<String, List<Test>> SEND_TESTS = const {
         const Visit(VisitKind.ERROR_INVALID_SET_IF_NULL,
                     error: MessageKind.NO_INSTANCE_AVAILABLE,
                     rhs: '42')),
+    const Test.prefix(
+        '''
+        ''',
+        '''
+        m() { p ??= 42; }
+        ''',
+        const Visit(VisitKind.ERROR_INVALID_SET_IF_NULL,
+                    error: MessageKind.PREFIX_AS_EXPRESSION,
+                    rhs: '42')),
     const Test(
         '''
         class C {