Handle prefix as expression in SendSet.

tests/compiler/dart2js/semantic_visitor_test_send_data.dart

 // Copyright (c) 2015, 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.
 
 part of dart2js.semantics_visitor_test;
 
 const Map<String, List<Test>> SEND_TESTS = const {
   'Parameters': const [
     // Parameters
     const Test('m(o) => o;',
@@ skipping 785 matching lines @@
                     element: 'field(o)',
                     rhs: '42')),
     const Test.prefix(
         '''
         var o;
         ''',
         'm() { p.o = 42; }',
         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;
         m() { o = 42; }
         ''',
         const Visit(VisitKind.VISIT_FINAL_TOP_LEVEL_FIELD_SET,
                     element: 'field(o)',
                     rhs: '42')),
     const Test.prefix(
         '''
@@ skipping 28 matching lines @@
                     element: 'field(o)',
                     arguments: '(null,42)')),
     const Test.prefix(
         '''
         var o;
         ''',
         'm() { p.o(null, 42); }',
         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;
         ''',
         const Visit(VisitKind.VISIT_UNRESOLVED_GET,
                     name: 'o')),
     const Test(
         '''
         m() { o = 42; }
         ''',
@@ skipping 1543 matching lines @@
         '''
         class C {
           var o;
           static m() { o += 42; }
         }
         ''',
         const Visit(VisitKind.ERROR_INVALID_COMPOUND,
                     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 {
           static get a => 0;
           static set a(_) {}
         }
         m() => C.a += 42;
         ''',
         const Visit(VisitKind.VISIT_STATIC_GETTER_SETTER_COMPOUND,
             getter: 'getter(C#a)', setter: 'setter(C#a)',
@@ skipping 499 matching lines @@
     const Test.clazz(
         '''
         class C {
           var o;
           static m() { ++o; }
         }
         ''',
         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 {
           static get a => 0;
           static set a(_) {}
         }
         m() => ++C.a;
         ''',
         const Visit(VisitKind.VISIT_STATIC_GETTER_SETTER_PREFIX,
             getter: 'getter(C#a)', setter: 'setter(C#a)',
@@ skipping 365 matching lines @@
     const Test.clazz(
         '''
         class C {
           var o;
           static m() { o--; }
         }
         ''',
         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 {
           static get a => 0;
           static set a(_) {}
         }
         m() => C.a++;
         ''',
         const Visit(VisitKind.VISIT_STATIC_GETTER_SETTER_POSTFIX,
             getter: 'getter(C#a)', setter: 'setter(C#a)',
@@ skipping 784 matching lines @@
     const Test.clazz(
         '''
         class C {
           var o;
           static m() { o ??= 42; }
         }
         ''',
         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 {
           static get a => 0;
           static set a(_) {}
         }
         m() => C.a ??= 42;
         ''',
         const Visit(VisitKind.VISIT_STATIC_GETTER_SETTER_SET_IF_NULL,
             getter: 'getter(C#a)', setter: 'setter(C#a)',
@@ skipping 316 matching lines @@
             element: 'field(a)', rhs: '42')),
 
     const Test(
         '''
         m() => unresolved ??= 42;
         ''',
         const Visit(VisitKind.VISIT_UNRESOLVED_SET_IF_NULL,
             name: 'unresolved', rhs: '42')),
   ],
 };