Class: Date

Inherits:
Object show all
Defined in:
opal/stdlib/date.rb,
opal/stdlib/json.rb more...

Defined Under Namespace

Classes: Infinity

Constant Summary

JULIAN = 
Infinity.new
GREGORIAN = 
-Infinity.new
ITALY =

1582-10-15

2299161
ENGLAND =

1752-09-14

2361222
MONTHNAMES = 
[nil] + %w(January February March April May June July August September October November December)
DAYNAMES = 
%w(Sunday Monday Tuesday Wednesday Thursday Friday Saturday)
ABBR_DAYNAMES = 
%w(Sun Mon Tue Wed Thu Fri Sat)

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(year = -4712,, month = 1, day = 1, start = ITALY) ⇒ Date

Returns a new instance of Date

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# File 'opal/stdlib/date.rb', line 101

def initialize(year = -4712, month = 1, day = 1, start = ITALY)
  @date = `new Date(year, month - 1, day)`
end

Class Method Details

.parse(string) ⇒ Object

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# File 'opal/stdlib/date.rb', line 91

def parse(string)
  match = `/^(\d*)-(\d*)-(\d*)/.exec(string)`
  wrap `new Date(parseInt(match[1], 10), parseInt(match[2], 10) - 1, parseInt(match[3], 10))`
end

.today ⇒ Object

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# File 'opal/stdlib/date.rb', line 96

def today
  wrap `new Date()`
end

.wrap(native) ⇒ Object

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# File 'opal/stdlib/date.rb', line 85

def wrap(native)
  instance = allocate
  `#{instance}.date = #{native}`
  instance
end

Instance Method Details

#+(date) ⇒ Object

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# File 'opal/stdlib/date.rb', line 121

def +(date)
  %x{
    if (date.$$is_number) {
      var result = #{clone};
      result.date.setDate(#@date.getDate() + date);
      return result;
    }
    else {
      #{raise TypeError};
    }
  }
end

#-(date) ⇒ Object

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# File 'opal/stdlib/date.rb', line 105

def -(date)
  %x{
    if (date.$$is_number) {
      var result = #{clone};
      result.date.setDate(#@date.getDate() - date);
      return result;
    }
    else if (date.date) {
      return Math.round((#@date - #{date}.date) / (1000 * 60 * 60 * 24));
    }
    else {
      #{raise TypeError};
    }
  }
end

#<(other) ⇒ Object

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# File 'opal/stdlib/date.rb', line 134

def <(other)
  %x{
    var a = #@date, b = #{other}.date;
    a.setHours(0, 0, 0, 0);
    b.setHours(0, 0, 0, 0);
    return a < b;
  }
end

#<<(n) ⇒ Object

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# File 'opal/stdlib/date.rb', line 209

def <<(n)
  %x{
    if (!n.$$is_number) {
      #{raise TypeError};
    }

    return #{self >> `-n`};
  }
end

#<=(other) ⇒ Object

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# File 'opal/stdlib/date.rb', line 143

def <=(other)
  %x{
    var a = #@date, b = #{other}.date;
    a.setHours(0, 0, 0, 0);
    b.setHours(0, 0, 0, 0);
    return a <= b;
  }
end

#<=>(other) ⇒ Object

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# File 'opal/stdlib/date.rb', line 170

def <=>(other)
  %x{
    var a = #@date, b = #{other}.date;
    a.setHours(0, 0, 0, 0);
    b.setHours(0, 0, 0, 0);

    if (a < b) {
      return -1;
    }
    else if (a > b) {
      return 1;
    }
    else {
      return 0;
    }
  }
end

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

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# File 'opal/stdlib/date.rb', line 188

def ==(other)
  %x{
    var a = #@date, b = other.date;
    return (a.getFullYear() === b.getFullYear() && a.getMonth() === b.getMonth() && a.getDate() === b.getDate());
  }
end

#>(other) ⇒ Object

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# File 'opal/stdlib/date.rb', line 152

def >(other)
  %x{
    var a = #@date, b = #{other}.date;
    a.setHours(0, 0, 0, 0);
    b.setHours(0, 0, 0, 0);
    return a > b;
  }
end

#>=(other) ⇒ Object

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# File 'opal/stdlib/date.rb', line 161

def >=(other)
  %x{
    var a = #@date, b = #{other}.date;
    a.setHours(0, 0, 0, 0);
    b.setHours(0, 0, 0, 0);
    return a >= b;
  }
end

#>>(n) ⇒ Object

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# File 'opal/stdlib/date.rb', line 195

def >>(n)
  %x{
    if (!n.$$is_number) {
      #{raise TypeError};
    }

    var result = #{clone}, date = result.date, cur = date.getDate();
    date.setDate(1);
    date.setMonth(date.getMonth() + n);
    date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
    return result;
  }
end

#as_json ⇒ Object

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# File 'opal/stdlib/json.rb', line 191

def as_json
  to_s
end

#clone ⇒ Object

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# File 'opal/stdlib/date.rb', line 221

def clone
  Date.wrap(`new Date(#@date.getTime())`)
end

#day ⇒ Object

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# File 'opal/stdlib/date.rb', line 225

def day
  `#@date.getDate()`
end

#friday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 229

def friday?
  wday == 5
end

#jd ⇒ Object

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# File 'opal/stdlib/date.rb', line 233

def jd
  %x{
  //Adapted from http://www.physics.sfasu.edu/astro/javascript/julianday.html

  var mm = #@date.getMonth() + 1,
      dd = #@date.getDate(),
      yy = #@date.getFullYear(),
      hr = 12, mn = 0, sc = 0,
      ggg, s, a, j1, jd;

  hr = hr + (mn / 60) + (sc/3600);

  ggg = 1;
  if (yy <= 1585) {
    ggg = 0;
  }

  jd = -1 * Math.floor(7 * (Math.floor((mm + 9) / 12) + yy) / 4);

  s = 1;
  if ((mm - 9) < 0) {
    s =- 1;
  }

  a = Math.abs(mm - 9);
  j1 = Math.floor(yy + s * Math.floor(a / 7));
  j1 = -1 * Math.floor((Math.floor(j1 / 100) + 1) * 3 / 4);

  jd = jd + Math.floor(275 * mm / 9) + dd + (ggg * j1);
  jd = jd + 1721027 + 2 * ggg + 367 * yy - 0.5;
  jd = jd + (hr / 24);

  return jd;
  }
end

#julian? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 269

def julian?
  `#@date < new Date(1582, 10 - 1, 15, 12)`
end

#monday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 273

def monday?
  wday == 1
end

#month ⇒ Object

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# File 'opal/stdlib/date.rb', line 277

def month
  `#@date.getMonth() + 1`
end

#next ⇒ Object Also known as: succ

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# File 'opal/stdlib/date.rb', line 281

def next
  self + 1
end

#next_day(n = 1) ⇒ Object

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# File 'opal/stdlib/date.rb', line 285

def next_day(n=1)
  self + n
end

#next_month ⇒ Object

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# File 'opal/stdlib/date.rb', line 289

def next_month
  %x{
    var result = #{clone}, date = result.date, cur = date.getDate();
    date.setDate(1);
    date.setMonth(date.getMonth() + 1);
    date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
    return result;
  }
end

#prev_day(n = 1) ⇒ Object

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# File 'opal/stdlib/date.rb', line 299

def prev_day(n=1)
  self - n
end

#prev_month ⇒ Object

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# File 'opal/stdlib/date.rb', line 303

def prev_month
  %x{
    var result = #{clone}, date = result.date, cur = date.getDate();
    date.setDate(1);
    date.setMonth(date.getMonth() - 1);
    date.setDate(Math.min(cur, days_in_month(date.getFullYear(), date.getMonth())));
    return result;
  }
end

#saturday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 313

def saturday?
  wday == 6
end

#strftime(format = '') ⇒ Object

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# File 'opal/stdlib/date.rb', line 317

def strftime(format = '')
  %x{
    if (format == '') {
      return #{to_s};
    }

    return #@date.$strftime(#{format});
  }
end

#sunday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 329

def sunday?
  wday == 0
end

#thursday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 333

def thursday?
  wday == 4
end

#to_json ⇒ Object

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# File 'opal/stdlib/json.rb', line 187

def to_json
  to_s.to_json
end

#to_s ⇒ Object

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# File 'opal/stdlib/date.rb', line 337

def to_s
  %x{
    var d = #@date, year = d.getFullYear(), month = d.getMonth() + 1, day = d.getDate();
    if (month < 10) { month = '0' + month; }
    if (day < 10) { day = '0' + day; }
    return year + '-' + month + '-' + day;
  }
end

#tuesday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 346

def tuesday?
  wday == 2
end

#wday ⇒ Object

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# File 'opal/stdlib/date.rb', line 350

def wday
  `#@date.getDay()`
end

#wednesday? ⇒ Boolean

Returns:

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# File 'opal/stdlib/date.rb', line 354

def wednesday?
  wday == 3
end

#year ⇒ Object

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# File 'opal/stdlib/date.rb', line 358

def year
  `#@date.getFullYear()`
end