Class: Puppet::Parser::AST::ASTArray

Inherits:
Branch show all
Includes:
Enumerable
Defined in:
lib/puppet/parser/ast/astarray.rb

Overview

The basic container class. This object behaves almost identically to a normal array except at initialization time. Note that its name is ‘AST::ASTArray’, rather than plain ‘AST::Array’; I had too many bugs when it was just ‘AST::Array’, because things like ‘object.is_a?(Array)’ never behaved as I expected.

Instance Attribute Summary

Attributes inherited from Branch

#children, #pin

Instance Method Summary collapse

Methods inherited from Branch

#each, #initialize

Constructor Details

This class inherits a constructor from Puppet::Parser::AST::Branch

Instance Method Details

#[](index) ⇒ Object

Return a child by index. Used (at least) by tests.



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# File 'lib/puppet/parser/ast/astarray.rb', line 13

def [](index)
  @children[index]
end

#evaluate(scope) ⇒ Object

Evaluate our children.



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# File 'lib/puppet/parser/ast/astarray.rb', line 18

def evaluate(scope)
  result = []
  @children.each do |child|
    # Skip things that respond to :instantiate (classes, nodes,
    # and definitions), because they have already been
    # instantiated.
    if !child.respond_to?(:instantiate)
      item = child.safeevaluate(scope)
      if !item.nil?
        # nil values are implicitly removed.
        result.push(item)
      end
    end
  end
  result
end

#push(*ary) ⇒ Object 



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# File 'lib/puppet/parser/ast/astarray.rb', line 35

def push(*ary)
  ary.each { |child|
    #Puppet.debug "adding %s(%s) of type %s to %s" %
    #    [child, child.object_id, child.class.to_s.sub(/.+::/,''),
    #    self.object_id]
    @children.push(child)
  }

  self
end

#to_s ⇒ Object 



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# File 'lib/puppet/parser/ast/astarray.rb', line 46

def to_s
  "[" + @children.collect { |c| c.to_s }.join(', ') + "]"
end