Class: Datadog::DI::EL::Expression Private

Inherits:
Object
  • Object
show all
Defined in:
lib/datadog/di/el/expression.rb

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

Represents an Expression Language expression.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dsl_expr, compiled_expr) ⇒ Expression

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns a new instance of Expression.



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/datadog/di/el/expression.rb', line 10

def initialize(dsl_expr, compiled_expr)
  unless String === compiled_expr
    raise ArgumentError, "compiled_expr must be a string"
  end

  @dsl_expr = dsl_expr

  cls = Class.new(Evaluator)
  cls.class_exec do
    eval(<<-RUBY, Object.new.send(:binding), __FILE__, __LINE__ + 1) # standard:disable Security/Eval
      def evaluate(context)
        @context = context
        #{compiled_expr}
      end
    RUBY
  end
  @evaluator = cls.new
end

Instance Attribute Details

#dsl_expr ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



29
30
31
 
# File 'lib/datadog/di/el/expression.rb', line 29

def dsl_expr
  @dsl_expr
end

#evaluator ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



30
31
32
 
# File 'lib/datadog/di/el/expression.rb', line 30

def evaluator
  @evaluator
end

Instance Method Details

#evaluate(context) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



32
33
34
 
# File 'lib/datadog/di/el/expression.rb', line 32

def evaluate(context)
  @evaluator.evaluate(context)
end

#satisfied?(context) ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


36
37
38
 
# File 'lib/datadog/di/el/expression.rb', line 36

def satisfied?(context)
  !!evaluate(context)
end