Package TWiki::If
Support for the conditions in %IF{} statements. Basically a simple
stack-based parser for infix expressions that generates a parse
tree that can subsequently be evaluated.
ClassMethod new (\%operators) -> \%factory
Construct a new if node factory.
-
\%operators reference to a hash of operators.
Each operator must have the following fields: prec (precedence) type (0 unary 1 binary) exec (ref to a function to execute). If not provided, the default set of boolean operations supported by %IF is used.
ObjectMethod evaluate ($twiki) -> $result
Execute the parse node.
!!!new!!!
-
$string - string containing an expression to parse
Construct a new search node by parsing the passed expression. Return
the new object.
