class Cucumber::CucumberExpressions::CombinatorialGeneratedExpressionFactory
Constants
- MAX_EXPRESSIONS
-
256 generated expressions ought to be enough for anybody
Public Class Methods
Source
# File lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb, line 8 def initialize(expression_template, parameter_type_combinations) @expression_template = expression_template @parameter_type_combinations = parameter_type_combinations end
Public Instance Methods
Source
# File lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb, line 13 def generate_expressions generated_expressions = [] generate_permutations(generated_expressions, 0, []) generated_expressions end
Source
# File lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb, line 22 def generate_permutations(generated_expressions, depth, current_parameter_types) return if generated_expressions.length >= MAX_EXPRESSIONS if depth == @parameter_type_combinations.length generated_expression = GeneratedExpression.new(@expression_template, current_parameter_types) generated_expressions.push(generated_expression) return end (0...@parameter_type_combinations[depth].length).each do |i| # Avoid recursion if no elements can be added. break if generated_expressions.length >= MAX_EXPRESSIONS new_current_parameter_types = current_parameter_types.dup # clone new_current_parameter_types.push(@parameter_type_combinations[depth][i]) generate_permutations(generated_expressions, depth + 1, new_current_parameter_types) end end