Class: Sass::Script::Number
- Defined in:
- lib/sass/script/number.rb
Overview
A SassScript object representing a number. SassScript numbers can have decimal values, and can also have units. For example, ‘12`, `1px`, and `10.45em` are all valid values.
Numbers can also have more complex units, such as ‘1px*em/in`. These cannot be inputted directly in Sass code at the moment.
Constant Summary collapse
- PRECISION =
The precision with which numbers will be printed to CSS files. For example, if this is ‘1000.0`, `3.1415926` will be printed as `3.142`.
1000.0
Instance Attribute Summary collapse
-
#denominator_units ⇒ Array<String>
readonly
A list of units in the denominator of the number.
-
#numerator_units ⇒ Array<String>
readonly
A list of units in the numerator of the number.
-
#value ⇒ Numeric
readonly
The Ruby value of the number.
Instance Method Summary collapse
-
#div(other) ⇒ Literal
The SassScript ‘/` operation.
-
#eq(other) ⇒ Boolean
The SassScript ‘==` operation.
-
#gt(other) ⇒ Boolean
The SassScript ‘>` operation.
-
#gte(other) ⇒ Boolean
The SassScript ‘>=` operation.
-
#initialize(value, numerator_units = [], denominator_units = []) ⇒ Number
constructor
A new instance of Number.
-
#inspect ⇒ String
Returns a readable representation of this number.
-
#int? ⇒ Boolean
Whether or not this number is an integer.
-
#legal_units? ⇒ Boolean
Whether or not this number has units that can be represented in CSS (that is, zero or one #numerator_units).
-
#lt(other) ⇒ Boolean
The SassScript ‘<` operation.
-
#lte(other) ⇒ Boolean
The SassScript ‘<=` operation.
-
#minus(other) ⇒ Literal
The SassScript binary ‘-` operation (e.g. `!a - !b`).
-
#mod(other) ⇒ Number
The SassScript ‘%` operation.
-
#plus(other) ⇒ Literal
The SassScript ‘+` operation.
-
#times(other) ⇒ Number, Color
The SassScript ‘*` operation.
-
#to_i ⇒ Fixnum
The integer value of the number.
-
#to_s ⇒ String
The CSS representation of this number.
-
#unary_minus ⇒ Number
The SassScript unary ‘-` operation (e.g. `-!a`).
-
#unitless? ⇒ Boolean
Whether or not this number has no units.
Methods inherited from Literal
#==, #and, #comma, #concat, #neq, #or, #perform, #to_bool, #unary_div, #unary_not
Methods inherited from Node
Constructor Details
#initialize(value, numerator_units = [], denominator_units = []) ⇒ Number
Returns a new instance of Number.
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# File 'lib/sass/script/number.rb', line 36 def initialize(value, numerator_units = [], denominator_units = []) super(value) @numerator_units = numerator_units @denominator_units = denominator_units normalize! end |
Instance Attribute Details
#denominator_units ⇒ Array<String> (readonly)
A list of units in the denominator of the number. For example, ‘1px*em/in*cm` would return `[“in”, “cm”]`
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# File 'lib/sass/script/number.rb', line 26 def denominator_units @denominator_units end |
#numerator_units ⇒ Array<String> (readonly)
A list of units in the numerator of the number. For example, ‘1px*em/in*cm` would return `[“px”, “em”]`
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# File 'lib/sass/script/number.rb', line 21 def numerator_units @numerator_units end |
#value ⇒ Numeric (readonly)
The Ruby value of the number.
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# File 'lib/sass/script/number.rb', line 16 def value @value end |
Instance Method Details
#div(other) ⇒ Literal
The SassScript ‘/` operation. Its functionality depends on the type of its argument:
Sass::Script::Number : Divides this number by the other, converting units appropriately.
Literal : See Literal#div.
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# File 'lib/sass/script/number.rb', line 128 def div(other) if other.is_a? Number operate(other, :/) else super end end |
#eq(other) ⇒ Boolean
The SassScript ‘==` operation.
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# File 'lib/sass/script/number.rb', line 157 def eq(other) Sass::Script::Bool.new(super.to_bool && self.numerator_units.sort == other.numerator_units.sort && self.denominator_units.sort == other.denominator_units.sort) end |
#gt(other) ⇒ Boolean
The SassScript ‘>` operation.
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# File 'lib/sass/script/number.rb', line 168 def gt(other) raise NoMethodError.new(nil, :gt) unless other.is_a?(Number) operate(other, :>) end |
#gte(other) ⇒ Boolean
The SassScript ‘>=` operation.
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# File 'lib/sass/script/number.rb', line 178 def gte(other) raise NoMethodError.new(nil, :gte) unless other.is_a?(Number) operate(other, :>=) end |
#inspect ⇒ String
Returns a readable representation of this number.
This representation is valid CSS (and valid SassScript) as long as there is only one unit.
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# File 'lib/sass/script/number.rb', line 217 def inspect value = if self.value.is_a?(Float) && (self.value.infinite? || self.value.nan?) self.value elsif int? self.value.to_i else (self.value * PRECISION).round / PRECISION end "#{value}#{unit_str}" end |
#int? ⇒ Boolean
Returns Whether or not this number is an integer.
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# File 'lib/sass/script/number.rb', line 237 def int? value % 1 == 0.0 end |
#legal_units? ⇒ Boolean
Returns Whether or not this number has units that can be represented in CSS (that is, zero or one #numerator_units).
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# File 'lib/sass/script/number.rb', line 248 def legal_units? (numerator_units.empty? || numerator_units.size == 1) && denominator_units.empty? end |
#lt(other) ⇒ Boolean
The SassScript ‘<` operation.
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# File 'lib/sass/script/number.rb', line 188 def lt(other) raise NoMethodError.new(nil, :lt) unless other.is_a?(Number) operate(other, :<) end |
#lte(other) ⇒ Boolean
The SassScript ‘<=` operation.
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# File 'lib/sass/script/number.rb', line 198 def lte(other) raise NoMethodError.new(nil, :lte) unless other.is_a?(Number) operate(other, :<=) end |
#minus(other) ⇒ Literal
The SassScript binary ‘-` operation (e.g. `!a - !b`). Its functionality depends on the type of its argument:
Sass::Script::Number : Subtracts this number from the other, converting units if possible.
Literal : See Literal#minus.
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# File 'lib/sass/script/number.rb', line 80 def minus(other) if other.is_a? Number operate(other, :-) else super end end |
#mod(other) ⇒ Number
The SassScript ‘%` operation.
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# File 'lib/sass/script/number.rb', line 142 def mod(other) if other.is_a?(Number) unless other.unitless? raise Sass::SyntaxError.new("Cannot modulo by a number with units: #{other.inspect}.") end operate(other, :%) else raise NoMethodError.new(nil, :mod) end end |
#plus(other) ⇒ Literal
The SassScript ‘+` operation. Its functionality depends on the type of its argument:
Sass::Script::Number : Adds the two numbers together, converting units if possible.
Color : Adds this number to each of the RGB color channels.
Literal : See Literal#plus.
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# File 'lib/sass/script/number.rb', line 58 def plus(other) if other.is_a? Number operate(other, :+) elsif other.is_a?(Color) other.plus(self) else super end end |
#times(other) ⇒ Number, Color
The SassScript ‘*` operation. Its functionality depends on the type of its argument:
Sass::Script::Number : Multiplies the two numbers together, converting units appropriately.
Color : Multiplies each of the RGB color channels by this number.
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# File 'lib/sass/script/number.rb', line 107 def times(other) if other.is_a? Number self.operate(other, :*) elsif other.is_a? Color other.times(self) else raise NoMethodError.new(nil, :times) end end |
#to_i ⇒ Fixnum
Returns The integer value of the number.
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# File 'lib/sass/script/number.rb', line 231 def to_i super unless int? return value end |
#to_s ⇒ String
Returns The CSS representation of this number.
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# File 'lib/sass/script/number.rb', line 206 def to_s raise Sass::SyntaxError.new("#{inspect} isn't a valid CSS value.") unless legal_units? inspect end |
#unary_minus ⇒ Number
The SassScript unary ‘-` operation (e.g. `-!a`).
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# File 'lib/sass/script/number.rb', line 91 def unary_minus Number.new(-value, numerator_units, denominator_units) end |
#unitless? ⇒ Boolean
Returns Whether or not this number has no units.
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# File 'lib/sass/script/number.rb', line 242 def unitless? numerator_units.empty? && denominator_units.empty? end |