defining the set of values included, and a list containing these values.
value-mask-type gives the type of the bitmask; this must be CARD16 or
CARD32. value-mask-name gives the field name of the bitmask, and
- value-list-name gives the field name of the list of values.
+ value-list-name gives the field name of the list of values. Please use
+ <switch> instead for new protocol definitions.
+<switch name="identifier"> switch expression
+ <bitcase> bitcase expression, fields </bitcase> </switch>
+
+ This element represents conditional inclusion of fields. It can be viewed
+ as sequence of multiple ifs: if ( switch expression & bitcase expression )
+ is equal to bitcase expression, bitcase fields are included in structure.
+ It can be used only as the last field of structure. New protocol definitions
+ should prefer to use this instead of <valueparam>.
Expressions
-----------
The bit element represents a literal bitmask value in an expression.
The integer must be in the range 0..31, expanding to (1<<n) in C.
+
+<enumref ref="identifier">enum item identifier</enumref>
+
+ This element represents a reference to item of enum.
+
+<unop op="operator">expression</unop>
+
+ This element represents a unary operator, with the op attribute specifying
+ which operator. The only supported operation so far is ~, and its semantic
+ is identical to the corresponding operator in C.
+
+<sumof ref="identifier" />
+
+ This element represents a sumation of the elements of the referenced list.
+
+<popcount>expression</popcount>
+
+ This element represents the number of bits set in the expression.
+