class Rake::InvocationChain

InvocationChain tracks the chain of task invocations to detect circular dependencies.

Constants

EMPTY

Public Class Methods

append(value, chain) click to toggle source

# File lib/rake/invocation_chain.rb, line 27
def self.append(value, chain)
  chain.append(value)
end

new(value, tail) click to toggle source

# File lib/rake/invocation_chain.rb, line 7
def initialize(value, tail)
  @value = value
  @tail = tail
end

Public Instance Methods

append(value) click to toggle source

# File lib/rake/invocation_chain.rb, line 16
def append(value)
  if member?(value)
    fail RuntimeError, "Circular dependency detected: #{to_s} => #{value}"
  end
  self.class.new(value, self)
end

member?(obj) click to toggle source

# File lib/rake/invocation_chain.rb, line 12
def member?(obj)
  @value == obj || @tail.member?(obj)
end

to_s() click to toggle source

# File lib/rake/invocation_chain.rb, line 23
def to_s
  "#{prefix}#{@value}"
end

Private Instance Methods

prefix() click to toggle source

# File lib/rake/invocation_chain.rb, line 33
def prefix
  "#{@tail.to_s} => "
end