Class: Puppet::Parser::AST::ComparisonOperator

Inherits:
Branch show all
Defined in:
lib/puppet/parser/ast/comparison_operator.rb

Instance Attribute Summary collapse

Attributes inherited from Branch

#children, #pin

Instance Method Summary collapse

Constructor Details

#initialize(hash) ⇒ ComparisonOperator

Returns a new instance of ComparisonOperator.

Raises:

  • (ArgumentError) 


32
33
34
35
36
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 32

def initialize(hash)
  super

  raise ArgumentError, "Invalid comparison operator #{@operator}" unless %w{== != < > <= >=}.include?(@operator)
end

Instance Attribute Details

#lval ⇒ Object 



7
8
9
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 7

def lval
  @lval
end

#operator ⇒ Object 



7
8
9
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 7

def operator
  @operator
end

#rval ⇒ Object 



7
8
9
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 7

def rval
  @rval
end

Instance Method Details

#each ⇒ Object

Iterate across all of our children.



10
11
12
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 10

def each
  [@lval,@rval,@operator].each { |child| yield child }
end

#evaluate(scope) ⇒ Object

Returns a boolean which is the result of the boolean operation of lval and rval operands



16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
# File 'lib/puppet/parser/ast/comparison_operator.rb', line 16

def evaluate(scope)
  # evaluate the operands, should return a boolean value
  lval = @lval.safeevaluate(scope)

  case @operator
  when "==","!="
    @rval.evaluate_match(lval, scope) ? @operator == '==' : @operator == '!='
  else
    rval = @rval.safeevaluate(scope)
    rval = Puppet::Parser::Scope.number?(rval) || rval
    lval = Puppet::Parser::Scope.number?(lval) || lval

    lval.send(@operator,rval)
  end
end