1.9

compiler/res/version.txt

@@ -1 +1 @@
-1.9-dev
+1.9

docs/source/programming.rst

@@ -361,8 +361,11 @@ You can also create loops by using the ``goto`` statement, but this should usual
     Loop variables that are declared inline are scoped in the loop body so they're not accessible at all after the loop finishes.
 
 
-Conditional Execution (IF)
---------------------------
+Conditional Execution
+---------------------
+
+if statements
+^^^^^^^^^^^^^
 
 Conditional execution means that the flow of execution changes based on certiain conditions,
 rather than having fixed gotos or subroutine calls::
@@ -413,11 +416,15 @@ So ``if_cc goto target`` will directly translate into the single CPU instruction
     Maybe in the future this will be a separate nested scope, but for now, that is
     only possible when defining a subroutine.
 
-When - statement (jumptable)
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+when statement (jumptable)
+^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 .. attention::
-   TODO: docs for this this must still be written
+    TODO: docs for this this must still be written.
+    TODO: the code generator for this is not yet working.
+
+    Use a ``when`` statement if you have a set of choices that each should result in a certain
+    action. It's more readable (and results in faster code) than using a lot of if / else statements.
 
 
 Assignments

docs/source/syntaxreference.rst

@@ -610,7 +610,28 @@ The XX corresponds to one of the eigth branching instructions so the possibiliti
 ``if_cs``, ``if_cc``, ``if_eq``, ``if_ne``, ``if_pl``, ``if_mi``, ``if_vs`` and ``if_vc``.
 It can also be one of the four aliases that are easier to read: ``if_z``, ``if_nz``, ``if_pos`` and ``if_neg``.
 
-**When - statement (jumptable)**
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+when statement (jumptable)
+^^^^^^^^^^^^^^^^^^^^^^^^^^
 .. attention::
-   TODO: docs for this this must still be written
+   TODO: docs for this this must still be written.
+   TODO: the code generator for this is not yet working.
+
+    The condition value can only be an integer datatype.
+    The choice values must be constant integer values.
+
+    code example::
+
+       when 4+A+Y {
+            10 -> {
+                c64scr.print("ten")
+            }
+            5 -> c64scr.print("five")
+            30 -> c64scr.print("thirty")
+            99 -> c64scr.print("nn")
+            55 -> {
+                ; will be optimized away
+            }
+            else -> {
+                c64scr.print("!??!\n")
+            }
+        }