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Contents
module Turnip
class StepDefinition
class Match < Struct.new(:step_definition, :params, :block)
def expression; step_definition.expression; end
def method_name; step_definition.method_name; end
def called_from; step_definition.called_from; end
def trace
%{ - "#{expression}" (#{called_from})}
end
end
attr_reader :expression, :block, :method_name, :called_from
def initialize(expression, method_name=nil, called_from=nil, &block)
@expression = expression
@method_name = method_name || expression
@called_from = called_from
@block = block
end
def regexp
@regexp ||= compile_regexp
end
def match(description)
result = description.match(regexp)
if result
params = result.captures
@placeholder_names.each_with_index do |name, index|
params[index] = Turnip::Placeholder.apply(name.to_sym, params[index])
end
Match.new(self, params, block)
end
end
protected
OPTIONAL_WORD_REGEXP = /(\\\s)?\\\(([^)]+)\\\)(\\\s)?/
PLACEHOLDER_REGEXP = /:([\w]+)/
ALTERNATIVE_WORD_REGEXP = /([[:alpha:]]+)((\/[[:alpha:]]+)+)/
def compile_regexp
@placeholder_names = []
regexp = Regexp.escape(expression)
regexp.gsub!(PLACEHOLDER_REGEXP) do |_|
@placeholder_names << "#{$1}"
"(?<#{$1}>#{Placeholder.resolve($1.to_sym)})"
end
regexp.gsub!(OPTIONAL_WORD_REGEXP) do |_|
[$1, $2, $3].compact.map { |m| "(?:#{m})?" }.join
end
regexp.gsub!(ALTERNATIVE_WORD_REGEXP) do |_|
"(?:#{$1}#{$2.tr('/', '|')})"
end
Regexp.new("^#{regexp}$")
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems