Class: Gloo::Verbs::Alert

Inherits:
Core::Verb show all
Defined in:
lib/gloo/verbs/alert.rb

Constant Summary collapse

KEYWORD = 
'alert'.freeze
KEYWORD_SHORT = 
'!'.freeze
MISSING_EXPR_ERR = 
'Missing Expression!'.freeze
NO_RESULT_ERR = 
'Expression evaluated with no result!'.freeze

Constants inherited from Core::Baseo

Core::Baseo::NOT_IMPLEMENTED_ERR

Instance Attribute Summary

Attributes inherited from Core::Verb

#params, #tokens

Attributes inherited from Core::Baseo

#name

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Core::Verb

#display_value, help, inherited, #initialize, #type_display

Methods inherited from Core::Baseo

#initialize, #type_display

Constructor Details

This class inherits a constructor from Gloo::Core::Verb

Class Method Details

.keyword ⇒ Object

Get the Verb’s keyword.



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# File 'lib/gloo/verbs/alert.rb', line 40

def self.keyword
  return KEYWORD
end

.keyword_shortcut ⇒ Object

Get the Verb’s keyword shortcut.



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# File 'lib/gloo/verbs/alert.rb', line 47

def self.keyword_shortcut
  return KEYWORD_SHORT
end

Instance Method Details

#run ⇒ Object

Run the verb.



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# File 'lib/gloo/verbs/alert.rb', line 20

def run
  unless @tokens.token_count > 1
    @engine.err MISSING_EXPR_ERR
    return
  end

  expr = Gloo::Expr::Expression.new( @engine, @tokens.params )
  result = expr.evaluate

  if result
    @engine.heap.it.set_to result
    post_alert result
  else
    @engine.err NO_RESULT_ERR
  end
end