Class: TapDance::DSL

Inherits:
Object
  • Object
show all
Defined in:
lib/tap_dance/dsl.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DSL

Returns a new instance of DSL.



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# File 'lib/tap_dance/dsl.rb', line 17

def initialize
  @groups = [] # Arg/filter groups
  @tap   = nil # Current tap scope

  @definition = Definition.new
end

Instance Attribute Details

#definition ⇒ Object (readonly)

Returns the value of attribute definition.



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# File 'lib/tap_dance/dsl.rb', line 9

def definition
  @definition
end

Class Method Details

.evaluate(brewfile, lockfile = nil, unlock = nil) ⇒ Object 



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# File 'lib/tap_dance/dsl.rb', line 11

def self.evaluate(brewfile, lockfile=nil, unlock=nil)
  builder = new
  builder.eval_brewfile(brewfile)
  builder.definition
end

Instance Method Details

#brew(name, version = nil, opts = nil) ⇒ Object 



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# File 'lib/tap_dance/dsl.rb', line 50

def brew(name, version=nil, opts=nil)
  # Was version omitted?
  if opts.nil? && version.is_a?(Hash)
    opts = version
    version = nil
  end
  opts ||= {}

  @definition.brew name, version, { :tap => @tap }.merge(opts)
end

#eval_brewfile(brewfile, contents = nil) ⇒ Object 



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# File 'lib/tap_dance/dsl.rb', line 24

def eval_brewfile(brewfile, contents = nil)
  contents ||= File.read File.expand_path(brewfile.to_s)
  instance_eval contents, brewfile.to_s, 1
rescue SyntaxError => e
  bt = e.message.split("\n")[1..-1]
  raise BrewfileError, ["Brewfile syntax error:", *bt].join("\n")
rescue ScriptError, RegexpError, NameError, ArgumentError => e
  e.backtrace[0] = "#{e.backtrace[0]}: #{e.message} (#{e.class})"
  TapDance.ui.warn e.backtrace.join("\n       ")
  raise BrewfileError, "There was an error in your Brewfile," \
    " and TapDance cannot continue."
end

#tap(name, url, opts = {}) ⇒ Object

DSL commands

Raises:



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# File 'lib/tap_dance/dsl.rb', line 38

def tap(name, url, opts={})
  # Can't nest taps; doesn't make sense
  raise BrewfileError, "You cannot nest taps!" unless @tap.nil?
  old_tap = @tap

  @tap = @definition.tap name, url, opts

  yield if block_given?

  @tap = old_tap
end