Make "on" syntax mandatory for value sources and interceptors

Where you would have written

   x: NumberAnimation {}
   y: Behavior {}

you now must write

   NumberAnimation on x {}
   Behavior on y {}

This change also makes the parser more strict with respect to multiple
assignments to a single property - they're no longer allowed.  For example
this

   x: 10
   x: 11

is now an error.

2 files changed, 6 insertions, 6 deletions

diff --git a/examples/declarative/animations/color-animation.qml b/examples/declarative/animations/color-animation.qml
index 7171a69..6740522 100644
--- a/examples/declarative/animations/color-animation.qml
+++ b/examples/declarative/animations/color-animation.qml
@@ -10,7 +10,7 @@ Item {
         gradient: Gradient {
             GradientStop {
                 position: 0.0
-                color: SequentialAnimation {
+                SequentialAnimation on color {
                     repeat: true
                     ColorAnimation { from: "DeepSkyBlue"; to: "#0E1533"; duration: 5000 }
                     ColorAnimation { from: "#0E1533"; to: "DeepSkyBlue"; duration: 5000 }
@@ -18,7 +18,7 @@ Item {
             }
             GradientStop {
                 position: 1.0
-                color: SequentialAnimation {
+                SequentialAnimation on color {
                     repeat: true
                     ColorAnimation { from: "SkyBlue"; to: "#437284"; duration: 5000 }
                     ColorAnimation { from: "#437284"; to: "SkyBlue"; duration: 5000 }
@@ -31,7 +31,7 @@ Item {
     Item {
         width: parent.width; height: 2 * parent.height
         transformOrigin: Item.Center
-        rotation: NumberAnimation { from: 0; to: 360; duration: 10000; repeat: true }
+        NumberAnimation on rotation { from: 0; to: 360; duration: 10000; repeat: true }
         Image {
             source: "images/sun.png"; y: 10; anchors.horizontalCenter: parent.horizontalCenter
             transformOrigin: Item.Center; rotation: -3 * parent.rotation
@@ -44,7 +44,7 @@ Item {
             x: 0; y: parent.height/2; width: parent.width; height: parent.height/2
             source: "images/star.png"; angleDeviation: 360; velocity: 0
             velocityDeviation: 0; count: parent.width / 10; fadeInDuration: 2800
-            opacity: SequentialAnimation {
+            SequentialAnimation on opacity {
                 repeat: true
                 NumberAnimation { from: 0; to: 1; duration: 5000 }
                 NumberAnimation { from: 1; to: 0; duration: 5000 }
@@ -58,7 +58,7 @@ Item {
         gradient: Gradient {
             GradientStop {
                 position: 0.0
-                color: SequentialAnimation {
+                SequentialAnimation on color {
                     repeat: true
                     ColorAnimation { from: "ForestGreen"; to: "#001600"; duration: 5000 }
                     ColorAnimation { from: "#001600"; to: "ForestGreen"; duration: 5000 }
diff --git a/examples/declarative/animations/property-animation.qml b/examples/declarative/animations/property-animation.qml
index 537ee26..4428f34 100644
--- a/examples/declarative/animations/property-animation.qml
+++ b/examples/declarative/animations/property-animation.qml
@@ -42,7 +42,7 @@ Item {
 
         // Animate the y property. Setting repeat to true makes the
         // animation repeat indefinitely, otherwise it would only run once.
-        y: SequentialAnimation {
+        SequentialAnimation on y {
             repeat: true
 
             // Move from minHeight to maxHeight in 300ms, using the OutExpo easing function