Class: Dentaku::AST::RubyMath

Inherits:
Function show all
Defined in:
lib/dentaku/ast/functions/ruby_math.rb

Constant Summary collapse

ARRAY_RETURN_TYPES = 
[:frexp, :lgamma].freeze

Constants inherited from Function

Function::DIG

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Function

#deferred_args, #dependencies, get, #initialize, numeric, register, register_class, registry

Methods inherited from Node

#dependencies, peek, precedence

Constructor Details

This class inherits a constructor from Dentaku::AST::Function

Class Method Details

.[](method) ⇒ Object 



7
8
9
10
11
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 7

def self.[](method)
  klass = Class.new(self)
  klass.implement(method)
  klass
end

.arity ⇒ Object 



22
23
24
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 22

def self.arity
  @implementation.arity < 0 ? nil : @implementation.arity
end

.call(*args) ⇒ Object 



34
35
36
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 34

def self.call(*args)
  @implementation.call(*args)
end

.implement(method) ⇒ Object 



13
14
15
16
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 13

def self.implement(method)
  @name = method
  @implementation = Math.method(method)
end

.max_param_count ⇒ Object 



30
31
32
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 30

def self.max_param_count
  @implementation.parameters.select { |type, _name| type == :rest }.any? ? Float::INFINITY : @implementation.parameters.count
end

.min_param_count ⇒ Object 



26
27
28
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 26

def self.min_param_count
  @implementation.parameters.select { |type, _name| type == :req }.count
end

.name ⇒ Object 



18
19
20
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 18

def self.name
  @name
end

Instance Method Details

#type ⇒ Object 



45
46
47
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 45

def type
  ARRAY_RETURN_TYPES.include?(@name) ? :array : :numeric
end

#value(context = {}) ⇒ Object 



38
39
40
41
 
# File 'lib/dentaku/ast/functions/ruby_math.rb', line 38

def value(context = {})
  args = @args.flatten.map { |a| Dentaku::AST::Function.numeric(a.value(context)) }
  self.class.call(*args)
end