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.

Package TWiki::If

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!!!

ObjectMethod parse `($string) -> \$if`

$string - string containing an expression to parse

Construct a new search node by parsing the passed expression. Return the new object.

r1 - 01 Feb 2006 - 13:01:25 - TWikiContributor

Edit \| View raw \| Attach \| Ref-By \| History: r1 \| More \| Refresh cache
	Copyright © 1999-2008 by the contributing authors.

Package TWiki::If

ClassMethod new (\%operators) -> \%factory

ObjectMethod evaluate ($twiki) -> $result

ObjectMethod parse ($string) -> \$if

Package `TWiki::If`

ClassMethod new `(\%operators) -> \%factory`

ObjectMethod evaluate `($twiki) -> $result`

ObjectMethod parse `($string) -> \$if`