QmlJS: Introduce UnknownValue.

To distinguish known-to-be-undefined from a genuinely unknown value.

Change-Id: I606b4ea4d726f94553400b8950d3c0a4e76564a8
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@nokia.com>

1 files changed, 27 insertions, 16 deletions

diff --git a/tests/auto/qml/codemodel/check/equality-checks.qml b/tests/auto/qml/codemodel/check/equality-checks.qml
index 700331780f..e92b1c4cc1 100644
--- a/tests/auto/qml/codemodel/check/equality-checks.qml
+++ b/tests/auto/qml/codemodel/check/equality-checks.qml
@@ -1,11 +1,8 @@
 import Qt 4.7
 
 Rectangle {
-    onXChanged: {
-        if (0 == undefined) {} // 126 15 16
-    }
-
-    function foo() {
+    function foo(k) {
+        // k is a unknown value
         var s = ""
         var n = 0
         var N = null
@@ -16,45 +13,59 @@ Rectangle {
         if (s == s) {}
         if (s == n) {} // 126 15 16
         if (s == N) {} // ### should warn: always false
-        if (s == u) {} // 126 15 16
+        if (s == u) {} // ### should warn: always false
         if (s == b) {} // 126 15 16
         if (s == o) {} // 126 15 16
+        if (s == k) {} // 126 15 16
 
         if (n == s) {} // 126 15 16
         if (n == n) {}
         if (n == N) {} // ### should warn: always false
-        if (n == u) {} // 126 15 16
+        if (n == u) {} // ### should warn: always false
         if (n == b) {} // 126 15 16
         if (n == o) {} // 126 15 16
+        if (n == k) {} // 126 15 16
 
         if (N == s) {} // ### should warn: always false
         if (N == n) {} // ### should warn: always false
         if (N == N) {}
-        if (N == u) {} // 126 15 16
+        if (N == u) {} // ### should warn: always true
         // ### should warn: always false
         if (N == b) {} // 126 15 16
         if (N == o) {} // ### should warn: always false
+        if (N == k) {} // 126 15 16
 
-        if (u == s) {} // 126 15 16
-        if (u == n) {} // 126 15 16
-        if (u == N) {} // 126 15 16
-        if (u == u) {} // 126 15 16
-        if (u == b) {} // 126 15 16
-        if (u == o) {} // 126 15 16
+        if (u == s) {} // ### should warn: always false
+        if (u == n) {} // ### should warn: always false
+        if (u == N) {} // ### should warn: always true
+        if (u == u) {} // ### should warn: always true
+        if (u == b) {} // ### should warn: always false
+        if (u == o) {} // ### should warn: always false
+        if (u == k) {} // 126 15 16
 
         if (b == s) {} // 126 15 16
         if (b == n) {} // 126 15 16
         // ### should warn: always false
         if (b == N) {} // 126 15 16
-        if (b == u) {} // 126 15 16
+        if (b == u) {} // ### should warn: always false
         if (b == b) {}
         if (b == o) {} // 126 15 16
+        if (b == k) {} // 126 15 16
 
         if (o == s) {} // 126 15 16
         if (o == n) {} // 126 15 16
         if (o == N) {} // ### should warn: always false
-        if (o == u) {} // 126 15 16
+        if (o == u) {} // ### should warn: always false
         if (o == b) {} // 126 15 16
         if (o == o) {}
+        if (o == k) {} // 126 15 16
+
+        if (k == s) {} // 126 15 16
+        if (k == n) {} // 126 15 16
+        if (k == N) {} // 126 15 16
+        if (k == u) {} // 126 15 16
+        if (k == b) {} // 126 15 16
+        if (k == o) {} // 126 15 16
+        if (k == k) {} // 126 15 16
     }
 }