Contents

require File.expand_path("../../helpers", __FILE__)

class ScannerRefCalls < Test::Unit::TestCase

  tests = {
    # Group back-references, named, numbered, and relative
    '(?<X>abc)\k<X>'  => [3, :backref, :name_ref_ab,        '\k<X>',      9, 14],
    "(?<X>abc)\\k'X'" => [3, :backref, :name_ref_sq,        "\\k'X'",     9, 14],

    '(abc)\k<1>'      => [3, :backref, :number_ref_ab,      '\k<1>',      5, 10],
    "(abc)\\k'1'"     => [3, :backref, :number_ref_sq,      "\\k'1'",     5, 10],

    '(abc)\k<-1>'     => [3, :backref, :number_rel_ref_ab,  '\k<-1>',     5, 11],
    "(abc)\\k'-1'"    => [3, :backref, :number_rel_ref_sq,  "\\k'-1'",    5, 11],

    # Sub-expression invocation, named, numbered, and relative
    '(?<X>abc)\g<X>'  => [3, :backref, :name_call_ab,        '\g<X>',      9, 14],
    "(?<X>abc)\\g'X'" => [3, :backref, :name_call_sq,        "\\g'X'",     9, 14],

    '(abc)\g<1>'      => [3, :backref, :number_call_ab,      '\g<1>',      5, 10],
    "(abc)\\g'1'"     => [3, :backref, :number_call_sq,      "\\g'1'",     5, 10],

    '(abc)\g<-1>'     => [3, :backref, :number_rel_call_ab,  '\g<-1>',     5, 11],
    "(abc)\\g'-1'"    => [3, :backref, :number_rel_call_sq,  "\\g'-1'",    5, 11],

    # Group back-references, with nesting level
    '(?<X>abc)\k<X-0>'  => [3, :backref, :name_nest_ref_ab,        '\k<X-0>',      9, 16],
    "(?<X>abc)\\k'X-0'" => [3, :backref, :name_nest_ref_sq,        "\\k'X-0'",     9, 16],

    '(abc)\k<1-0>'      => [3, :backref, :number_nest_ref_ab,      '\k<1-0>',      5, 12],
    "(abc)\\k'1-0'"     => [3, :backref, :number_nest_ref_sq,      "\\k'1-0'",     5, 12],
  }

  count = 0
  tests.each do |pattern, test|
    define_method "test_scan_#{test[1]}_#{test[2]}_#{count+=1}" do

      tokens = RS.scan(pattern)
      assert_equal( test[1,5], tokens[test[0]])
      assert_equal( test[3],   pattern[tokens[test[0]][3], tokens[test[0]][4]])

    end
  end

end

Version data entries

11 entries across 11 versions & 1 rubygems

Version	Path
regexp_parser-0.3.4	test/scanner/test_refcalls.rb
regexp_parser-0.3.3	test/scanner/test_refcalls.rb
regexp_parser-0.3.2	test/scanner/test_refcalls.rb
regexp_parser-0.3.1	test/scanner/test_refcalls.rb
regexp_parser-0.3.0	test/scanner/test_refcalls.rb
regexp_parser-0.2.1	test/scanner/test_refcalls.rb
regexp_parser-0.2.0	test/scanner/test_refcalls.rb
regexp_parser-0.1.6	test/scanner/test_refcalls.rb
regexp_parser-0.1.5	test/scanner/test_refcalls.rb
regexp_parser-0.1.1	test/scanner/test_refcalls.rb
regexp_parser-0.1.0	test/scanner/test_refcalls.rb