Class Puppet::Parser::AST::Selector
In: lib/puppet/parser/ast/selector.rb
Parent: AST::Branch

The inline conditional operator. Unlike CaseStatement, which executes code, we just return a value.

Methods

each   evaluate  

Attributes

param  [RW] 
values  [RW] 

Public Instance methods

each() {|child| ...}

[Source]

    # File lib/puppet/parser/ast/selector.rb, line 9
 9:         def each
10:             [@param,@values].each { |child| yield child }
11:         end
evaluate(scope)

Find the value that corresponds with the test.

[Source]

    # File lib/puppet/parser/ast/selector.rb, line 14
14:         def evaluate(scope)
15:             retvalue = nil
16:             found = nil
17: 
18:             # Get our parameter.
19:             paramvalue = @param.safeevaluate(scope)
20:             
21:             sensitive = Puppet[:casesensitive]
22:             
23:             if ! sensitive and paramvalue.respond_to?(:downcase)
24:                 paramvalue = paramvalue.downcase
25:             end
26: 
27:             default = nil
28: 
29:             unless @values.instance_of? AST::ASTArray or @values.instance_of? Array
30:                 @values = [@values]
31:             end
32: 
33:             # Then look for a match in the options.
34:             @values.each { |obj|
35:                 param = obj.param.safeevaluate(scope)
36:                 if ! sensitive && param.respond_to?(:downcase)
37:                     param = param.downcase
38:                 end
39:                 if param == paramvalue
40:                     # we found a matching option
41:                     retvalue = obj.value.safeevaluate(scope)
42:                     found = true
43:                     break
44:                 elsif obj.param.is_a?(Default)
45:                     # Store the default, in case it's necessary.
46:                     default = obj
47:                 end
48:             }
49: 
50:             # Unless we found something, look for the default.
51:             unless found
52:                 if default
53:                     retvalue = default.value.safeevaluate(scope)
54:                 else
55:                     self.fail Puppet::ParseError,
56:                         "No matching value for selector param '%s'" % paramvalue
57:                 end
58:             end
59: 
60:             return retvalue
61:         end

[Validate]