Fix handling of identifier sequences starting with a function parameter.

pkg/analyzer/test/src/summary/summary_common.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.
 
 library analyzer.test.src.summary.summary_common;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/dart/scanner/reader.dart';
@@ skipping 7083 matching lines @@
 
   test_expr_inClosure_refersToParam() {
     if (skipNonConstInitializers) {
       return;
     }
     UnlinkedVariable variable = serializeVariableText('var v = (x) => x;');
     _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
         operators: [UnlinkedConstOperation.pushParameter], strings: ['x']);
   }
 
+  test_expr_inClosure_refersToParam_methodCall() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable = serializeVariableText('var v = (x) => x.f();');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        isValidConst: false,
+        operators: [
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.invokeMethod
+        ],
+        strings: [
+          'x',
+          'f'
+        ],
+        ints: [
+          0,
+          0
+        ]);
+  }
+
+  test_expr_inClosure_refersToParam_methodCall_prefixed() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable =
+        serializeVariableText('var v = (x) => x.y.f();');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        isValidConst: false,
+        operators: [
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.extractProperty,
+          UnlinkedConstOperation.invokeMethod
+        ],
+        strings: [
+          'x',
+          'y',
+          'f'
+        ],
+        ints: [
+          0,
+          0
+        ]);
+  }
+
   test_expr_inClosure_refersToParam_outOfScope() {
     if (skipNonConstInitializers) {
       return;
     }
     UnlinkedVariable variable =
         serializeVariableText('var x; var v = (b) => (b ? (x) => x : x);');
     _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
         isValidConst: false,
         operators: [
           UnlinkedConstOperation.pushParameter,
           UnlinkedConstOperation.pushLocalFunctionReference,
           UnlinkedConstOperation.pushReference,
           UnlinkedConstOperation.conditional,
         ],
         strings: [
           'b'
         ],
         ints: [
           0,
           0
         ],
         referenceValidators: [
           (EntityRef r) => checkTypeRef(r, null, null, 'x',
               expectedKind: ReferenceKind.topLevelPropertyAccessor)
         ]);
   }
 
+  test_expr_inClosure_refersToParam_prefixedIdentifier() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable = serializeVariableText('var v = (x) => x.y;');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        operators: [
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.extractProperty
+        ],
+        strings: [
+          'x',
+          'y'
+        ]);
+  }
+
+  test_expr_inClosure_refersToParam_prefixedIdentifier_assign() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable =
+        serializeVariableText('var v = (x) => x.y = null;');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        isValidConst: false,
+        operators: [
+          UnlinkedConstOperation.pushNull,
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.assignToProperty
+        ],
+        strings: [
+          'x',
+          'y'
+        ],
+        assignmentOperators: [
+          UnlinkedExprAssignOperator.assign
+        ]);
+  }
+
+  test_expr_inClosure_refersToParam_prefixedPrefixedIdentifier() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable = serializeVariableText('var v = (x) => x.y.z;');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        operators: [
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.extractProperty,
+          UnlinkedConstOperation.extractProperty
+        ],
+        strings: [
+          'x',
+          'y',
+          'z'
+        ]);
+  }
+
+  test_expr_inClosure_refersToParam_prefixedPrefixedIdentifier_assign() {
+    if (skipNonConstInitializers) {
+      return;
+    }
+    UnlinkedVariable variable =
+        serializeVariableText('var v = (x) => x.y.z = null;');
+    _assertUnlinkedConst(variable.initializer.localFunctions[0].bodyExpr,
+        isValidConst: false,
+        operators: [
+          UnlinkedConstOperation.pushNull,
+          UnlinkedConstOperation.pushParameter,
+          UnlinkedConstOperation.extractProperty,
+          UnlinkedConstOperation.assignToProperty
+        ],
+        strings: [
+          'x',
+          'y',
+          'z'
+        ],
+        assignmentOperators: [
+          UnlinkedExprAssignOperator.assign
+        ]);
+  }
+
   test_expr_invokeMethod_instance() {
     if (skipNonConstInitializers) {
       return;
     }
     UnlinkedVariable variable = serializeVariableText('''
 class C {
   int m(a, {b, c}) => 42;
 }
 final v = new C().m(1, b: 2, c: 3);
 ''');
@@ skipping 3188 matching lines @@
 class _PrefixExpectation {
   final ReferenceKind kind;
   final String name;
   final String absoluteUri;
   final String relativeUri;
   final int numTypeParameters;
 
   _PrefixExpectation(this.kind, this.name,
       {this.absoluteUri, this.relativeUri, this.numTypeParameters: 0});
 }