Class: Regexp

Inherits:
Object
  • Object
show all
Defined in:
opal/opal/corelib/regexp.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.escape(string) ⇒ Object Also known as: quote

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# File 'opal/opal/corelib/regexp.rb', line 5

def escape(string)
  %x{
    return string.replace(/([-[\]\/{}()*+?.^$\\| ])/g, '\\$1')
                 .replace(/[\n]/g, '\\n')
                 .replace(/[\r]/g, '\\r')
                 .replace(/[\f]/g, '\\f')
                 .replace(/[\t]/g, '\\t');
  }
end

.last_match(n = nil) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 15

def last_match(n=nil)
  if n.nil?
    $~
  else
    $~[n]
  end
end

.new(regexp, options = undefined) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 29

def new(regexp, options = undefined)
  `new RegExp(regexp, options)`
end

.union(*parts) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 25

def union(*parts)
  `new RegExp(parts.join(''))`
end

Instance Method Details

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

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# File 'opal/opal/corelib/regexp.rb', line 34

def ==(other)
  `other.constructor == RegExp && self.toString() === other.toString()`
end

#===(str) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 38

def ===(str)
  %x{
    if (!str.$$is_string && #{str.respond_to?(:to_str)}) {
      #{str = str.to_str};
    }

    if (!str.$$is_string) {
      return false;
    }

    return self.test(str);
  }
end

#=~(string) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 52

def =~(string)
  if `string === nil`
    $~ = nil

    return
  end

  string = Opal.coerce_to(string, String, :to_str).to_s

  %x{
    var re = self;

    if (re.global) {
      // should we clear it afterwards too?
      re.lastIndex = 0;
    }
    else {
      // rewrite regular expression to add the global flag to capture pre/post match
      re = new RegExp(re.source, 'g' + (re.multiline ? 'm' : '') + (re.ignoreCase ? 'i' : ''));
    }

    var result = re.exec(string);

    if (result) {
      #{$~ = MatchData.new(`re`, `result`)};

      return result.index;
    }
    else {
      #{$~ = nil};
      return nil;
    }
  }
end

#inspect ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 89

def inspect
  `self.toString()`
end

#match(string, pos = undefined, &block) ⇒ Object

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# File 'opal/opal/corelib/regexp.rb', line 93

def match(string, pos = undefined, &block)
  if `string === nil`
    $~ = nil

    return
  end

  if `string.$$is_string == null`
    unless string.respond_to? :to_str
      raise TypeError, "no implicit conversion of #{string.class} into String"
    end

    string = string.to_str
  end

  %x{
    var re = self;

    if (re.global) {
      // should we clear it afterwards too?
      re.lastIndex = 0;
    }
    else {
      re = new RegExp(re.source, 'g' + (re.multiline ? 'm' : '') + (re.ignoreCase ? 'i' : ''));
    }

    var result = re.exec(string);

    if (result) {
      result = #{$~ = MatchData.new(`re`, `result`)};

      if (block === nil) {
        return result;
      }
      else {
        return #{block.call(`result`)};
      }
    }
    else {
      return #{$~ = nil};
    }
  }
end

#source ⇒ Object Also known as: to_s

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# File 'opal/opal/corelib/regexp.rb', line 137

def source
  `self.source`
end