Module: Roast::Workflow::ExpressionUtils

Included in:
BaseIterationStep, ExpressionEvaluator
Defined in:
lib/roast/workflow/expression_utils.rb

Overview

Shared utilities for detecting and extracting expressions

Instance Method Summary collapse

Instance Method Details

#bash_command?(input) ⇒ Boolean

Check if the input is a Bash command in $(…)

Returns:

  • (Boolean) 


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# File 'lib/roast/workflow/expression_utils.rb', line 15

def bash_command?(input)
  return false unless input.is_a?(String)

  input.strip.start_with?("$(") && input.strip.end_with?(")")
end

#extract_command(input) ⇒ Object

Extract the command from $(…)



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# File 'lib/roast/workflow/expression_utils.rb', line 29

def extract_command(input)
  return input unless bash_command?(input)

  input.strip[2...-1].strip
end

#extract_expression(input) ⇒ Object

Extract the expression from {…}



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# File 'lib/roast/workflow/expression_utils.rb', line 22

def extract_expression(input)
  return input unless ruby_expression?(input)

  input.strip[2...-2].strip
end

#ruby_expression?(input) ⇒ Boolean

Check if the input is a Ruby expression in {…}

Returns:

  • (Boolean) 


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# File 'lib/roast/workflow/expression_utils.rb', line 8

def ruby_expression?(input)
  return false unless input.is_a?(String)

  input.strip.start_with?("{{") && input.strip.end_with?("}}")
end