Class: Chronic::Scalar
- Inherits:
-
Tag
- Object
- Tag
- Chronic::Scalar
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- Defined in:
- lib/chronic/scalar.rb
Overview
Constant Summary
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- DAY_PORTIONS =
%w( am pm morning afternoon evening night )
Instance Attribute Summary
Attributes inherited from Tag
#type
Class Method Summary
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Instance Method Summary
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Methods inherited from Tag
#initialize, #start=
Constructor Details
This class inherits a constructor from Chronic::Tag
Class Method Details
.make_year(year, bias) ⇒ Object
Build a year from a 2 digit suffix
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# File 'lib/chronic/scalar.rb', line 52
def self.make_year(year, bias)
return year if year.to_s.size > 2
start_year = Chronic.time_class.now.year - bias
century = (start_year / 100) * 100
full_year = century + year
full_year += 100 if full_year < start_year
full_year
end
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.scan(tokens, options) ⇒ Object
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# File 'lib/chronic/scalar.rb', line 6
def self.scan(tokens, options)
tokens.each_index do |i|
if t = scan_for_scalars(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end
if t = scan_for_days(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end
if t = scan_for_months(tokens[i], tokens[i + 1]) then tokens[i].tag(t) end
if t = scan_for_years(tokens[i], tokens[i + 1], options) then tokens[i].tag(t) end
end
end
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.scan_for_days(token, post_token) ⇒ Object
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# File 'lib/chronic/scalar.rb', line 24
def self.scan_for_days(token, post_token)
if token.word =~ /^\d\d?$/
toi = token.word.to_i
unless toi > 31 || toi < 1 || (post_token && DAY_PORTIONS.include?(post_token.word))
return ScalarDay.new(toi)
end
end
end
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.scan_for_months(token, post_token) ⇒ Object
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# File 'lib/chronic/scalar.rb', line 33
def self.scan_for_months(token, post_token)
if token.word =~ /^\d\d?$/
toi = token.word.to_i
unless toi > 12 || toi < 1 || (post_token && DAY_PORTIONS.include?(post_token.word))
return ScalarMonth.new(toi)
end
end
end
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.scan_for_scalars(token, post_token) ⇒ Object
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# File 'lib/chronic/scalar.rb', line 16
def self.scan_for_scalars(token, post_token)
if token.word =~ /^\d*$/
unless post_token && DAY_PORTIONS.include?(post_token.word)
return Scalar.new(token.word.to_i)
end
end
end
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.scan_for_years(token, post_token, options) ⇒ Object
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# File 'lib/chronic/scalar.rb', line 42
def self.scan_for_years(token, post_token, options)
if token.word =~ /^([1-9]\d)?\d\d?$/
unless post_token && DAY_PORTIONS.include?(post_token.word)
year = make_year(token.word.to_i, options[:ambiguous_year_future_bias])
return ScalarYear.new(year.to_i)
end
end
end
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Instance Method Details
#to_s ⇒ Object
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# File 'lib/chronic/scalar.rb', line 61
def to_s
'scalar'
end
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