Class: MatchData

Inherits:
Object show all
Defined in:
opal/opal/corelib/marshal/write_buffer.rb,
opal/opal/corelib/regexp.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(regexp, match_groups, no_matchdata: false) ⇒ MatchData

Returns a new instance of MatchData.



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# File 'opal/opal/corelib/regexp.rb', line 297

def initialize(regexp, match_groups, no_matchdata: false)
  $~          = self unless no_matchdata
  @regexp     = regexp
  @begin      = `match_groups.index`
  @string     = `match_groups.input`
  @pre_match  = `match_groups.input.slice(0, match_groups.index)`
  @post_match = `match_groups.input.slice(match_groups.index + match_groups[0].length)`
  @matches    = []

  %x{
    for (var i = 0, length = match_groups.length; i < length; i++) {
      var group = match_groups[i];

      if (group == null) {
        #{@matches}.push(nil);
      }
      else {
        #{@matches}.push(group);
      }
    }
  }
end

Instance Attribute Details

#post_match ⇒ Object (readonly)

Returns the value of attribute post_match.



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# File 'opal/opal/corelib/regexp.rb', line 295

def post_match
  @post_match
end

#pre_match ⇒ Object (readonly)

Returns the value of attribute pre_match.



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# File 'opal/opal/corelib/regexp.rb', line 295

def pre_match
  @pre_match
end

#regexp ⇒ Object (readonly)

Returns the value of attribute regexp.



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# File 'opal/opal/corelib/regexp.rb', line 295

def regexp
  @regexp
end

#string ⇒ Object (readonly)

Returns the value of attribute string.



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# File 'opal/opal/corelib/regexp.rb', line 295

def string
  @string
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql? 



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# File 'opal/opal/corelib/regexp.rb', line 355

def ==(other)
  return false unless ::MatchData === other

  `self.string == other.string` &&
    `self.regexp.toString() == other.regexp.toString()` &&
    `self.pre_match == other.pre_match` &&
    `self.post_match == other.post_match` &&
    `self.begin == other.begin`
end

#[](*args) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 332

def [](*args)
  %x{
    if (args[0].$$is_string) {
      if (#{!regexp.names.include?(args[0])}) {
        #{::Kernel.raise ::IndexError, "undefined group name reference: #{args[0]}"}
      }
      return #{named_captures[args[0]]}
    }
    else {
      return #{@matches[*args]}
    }
  }
end

#__marshal__(buffer) ⇒ Object 



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# File 'opal/opal/corelib/marshal/write_buffer.rb', line 107

def __marshal__(buffer)
  ::Kernel.raise ::TypeError, "no _dump_data is defined for class #{self.class}"
end

#begin(n) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 365

def begin(n)
  %x{
    if (n !== 0) {
      #{::Kernel.raise ::ArgumentError, 'MatchData#begin only supports 0th element'}
    }
    return self.begin;
  }
end

#captures ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 383

def captures
  `#{@matches}.slice(1)`
end

#end(n) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 374

def end(n)
  %x{
    if (n !== 0) {
      #{::Kernel.raise ::ArgumentError, 'MatchData#end only supports 0th element'}
    }
    return self.begin + self.matches[n].length;
  }
end

#inspect ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 398

def inspect
  %x{
    var str = "#<MatchData " + #{`#{@matches}[0]`.inspect};

    if (#{regexp.names.empty?}) {
      for (var i = 1, length = #{@matches}.length; i < length; i++) {
        str += " " + i + ":" + #{`#{@matches}[i]`.inspect};
      }
    }
    else {
      #{ named_captures.each do |k, v|
           %x{
             str += " " + #{k} + ":" + #{v.inspect}
           }
         end }
    }

    return str + ">";
  }
end

#length ⇒ Object Also known as: size 



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# File 'opal/opal/corelib/regexp.rb', line 419

def length
  `#{@matches}.length`
end

#match(idx) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 320

def match(idx)
  if (match = self[idx])
    match
  elsif idx.is_a?(Integer) && idx >= length
    ::Kernel.raise ::IndexError, "index #{idx} out of matches"
  end
end

#match_length(idx) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 328

def match_length(idx)
  match(idx)&.length
end

#named_captures ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 387

def named_captures
  matches = captures
  regexp.named_captures.transform_values do |i|
    matches[i.last - 1]
  end
end

#names ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 394

def names
  regexp.names
end

#offset(n) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 346

def offset(n)
  %x{
    if (n !== 0) {
      #{::Kernel.raise ::ArgumentError, 'MatchData#offset only supports 0th element'}
    }
    return [self.begin, self.begin + self.matches[n].length];
  }
end

#to_a ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 423

def to_a
  @matches
end

#to_s ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 427

def to_s
  `#{@matches}[0]`
end

#values_at(*args) ⇒ Object 



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# File 'opal/opal/corelib/regexp.rb', line 431

def values_at(*args)
  %x{
    var i, a, index, values = [];

    for (i = 0; i < args.length; i++) {

      if (args[i].$$is_range) {
        a = #{`args[i]`.to_a};
        a.unshift(i, 1);
        Array.prototype.splice.apply(args, a);
      }

      index = #{::Opal.coerce_to!(`args[i]`, ::Integer, :to_int)};

      if (index < 0) {
        index += #{@matches}.length;
        if (index < 0) {
          values.push(nil);
          continue;
        }
      }

      values.push(#{@matches}[index]);
    }

    return values;
  }
end