Class: Cucumber::CucumberExpressions::ParameterTypeRegistry

Inherits:
Object
  • Object
show all
Defined in:
lib/cucumber/cucumber_expressions/parameter_type_registry.rb

Constant Summary collapse

INTEGER_REGEXPS = 
[/-?\d+/, /\d+/]
FLOAT_REGEXP = 
/-?\d*\.\d+/
WORD_REGEXP = 
/\w+/
STRING_REGEXP = 
/"([^"\\]*(\\.[^"\\]*)*)"|'([^'\\]*(\\.[^'\\]*)*)'/

Instance Method Summary collapse

Constructor Details

#initialize ⇒ ParameterTypeRegistry

Returns a new instance of ParameterTypeRegistry.



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# File 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb', line 13

def initialize
  @parameter_type_by_name = {}
  @parameter_types_by_regexp = Hash.new {|hash, regexp| hash[regexp] = []}

  define_parameter_type(ParameterType.new('int', INTEGER_REGEXPS, Integer, lambda {|s| s.to_i}, true, true))
  define_parameter_type(ParameterType.new('float', FLOAT_REGEXP, Float, lambda {|s| s.to_f}, true, false))
  define_parameter_type(ParameterType.new('word', WORD_REGEXP, String, lambda {|s| s}, false, false))
  define_parameter_type(ParameterType.new('string', STRING_REGEXP, String, lambda {|s| s.gsub(/\\"/, '"').gsub(/\\'/, "'")}, true, false))
end

Instance Method Details

#define_parameter_type(parameter_type) ⇒ Object 



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# File 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb', line 44

def define_parameter_type(parameter_type)
  if @parameter_type_by_name.has_key?(parameter_type.name)
    raise CucumberExpressionError.new("There is already a parameter with name #{parameter_type.name}")
  end
  @parameter_type_by_name[parameter_type.name] = parameter_type

  parameter_type.regexps.each do |parameter_type_regexp|
    parameter_types = @parameter_types_by_regexp[parameter_type_regexp]
    if parameter_types.any? && parameter_types[0].prefer_for_regexp_match? && parameter_type.prefer_for_regexp_match?
      raise CucumberExpressionError.new("There can only be one preferential parameter type per regexp. The regexp /#{parameter_type_regexp}/ is used for two preferential parameter types, {#{parameter_types[0].name}} and {#{parameter_type.name}}")
    end
    parameter_types.push(parameter_type)
    parameter_types.sort!
  end
end

#lookup_by_regexp(parameter_type_regexp, expression_regexp, text) ⇒ Object 



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# File 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb', line 27

def lookup_by_regexp(parameter_type_regexp, expression_regexp, text)
  parameter_types = @parameter_types_by_regexp[parameter_type_regexp]
  return nil if parameter_types.nil?
  if parameter_types.length > 1 && !parameter_types[0].prefer_for_regexp_match?
    # We don't do this check on insertion because we only want to restrict
    # ambiguity when we look up by Regexp. Users of CucumberExpression should
    # not be restricted.
    generated_expressions = CucumberExpressionGenerator.new(self).generate_expressions(text)
    raise AmbiguousParameterTypeError.new(parameter_type_regexp, expression_regexp, parameter_types, generated_expressions)
  end
  parameter_types.first
end

#lookup_by_type_name(name) ⇒ Object 



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# File 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb', line 23

def lookup_by_type_name(name)
  @parameter_type_by_name[name]
end

#parameter_types ⇒ Object 



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# File 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb', line 40

def parameter_types
  @parameter_type_by_name.values
end