Class: Dentaku::AST::StringFunctions::Len

Inherits:

Base

• Object
• Node
• Function
• Base
• Dentaku::AST::StringFunctions::Len

Defined in:

lib/dentaku/ast/functions/string_functions.rb

Constant Summary

Constants inherited from Function

Function::DIG

Instance Attribute Summary

Attributes inherited from Function

#args

Class Method Summary

• .max_param_count ⇒ Object
• .min_param_count ⇒ Object

Instance Method Summary

• #initialize(*args) ⇒ Len constructor

  A new instance of Len.

• #type ⇒ Object
• #value(context = {}) ⇒ Object

Methods inherited from Base

#negative_argument_failure

Methods inherited from Function

#accept, #dependencies, get, numeric, register, register_class, registry

Methods inherited from Node

arity, #dependencies, #name, precedence, resolve_class

Constructor Details

#initialize(*args) ⇒ Len

Returns a new instance of Len.

# File 'lib/dentaku/ast/functions/string_functions.rb', line 96

def initialize(*args)
  super
  @string = @args[0]
end

Class Method Details

.max_param_count ⇒ Object

# File 'lib/dentaku/ast/functions/string_functions.rb', line 92

def self.max_param_count
  1
end

.min_param_count ⇒ Object

# File 'lib/dentaku/ast/functions/string_functions.rb', line 88

def self.min_param_count
  1
end

Instance Method Details

#type ⇒ Object

# File 'lib/dentaku/ast/functions/string_functions.rb', line 106

def type
  :numeric
end

#value(context = {}) ⇒ Object

# File 'lib/dentaku/ast/functions/string_functions.rb', line 101

def value(context = {})
  string = @string.value(context).to_s
  string.length
end