SetLen

The number of elements of a set.

Declaration

Syntax

SetLen(expr arg, ttype type, expr? value)

Arguments

Argument	Description
arg	the set.
type	the type of the expression.
value	the compile time value of the expression, when the frontend could fold it; nil otherwise.

Return values

The value of the expression.

Description

len(s).

Examples

(SetLen
  :arg (Var
    :v (SymbolRef 1 "s")
  )
  :type (Integer
    :kind 4
  )
  :value nil
)

It comes from this complete ASR text document:

(TranslationUnit
  :symtab (SymbolTable
    :id 0
    :symbols {
      "main" (Program
        :symtab (SymbolTable
          :id 1
          :symbols {
            "i" (Variable
              :parent_symtab 1
              :name "i"
              :dependencies []
              :intent :Local
              :symbolic_value nil
              :value nil
              :storage :Default
              :type (Integer
                :kind 4
              )
              :type_declaration nil
              :abi :Source
              :access :Public
              :presence :Required
              :value_attr false
              :target_attr false
              :contiguous_attr false
              :bindc_name nil
              :is_volatile false
              :is_protected false
              :pass_attr :NotMethod
              :self_argument nil
              :codims []
            )
            "p" (Variable
              :parent_symtab 1
              :name "p"
              :dependencies []
              :intent :Local
              :symbolic_value nil
              :value nil
              :storage :Default
              :type (Logical
                :kind 4
              )
              :type_declaration nil
              :abi :Source
              :access :Public
              :presence :Required
              :value_attr false
              :target_attr false
              :contiguous_attr false
              :bindc_name nil
              :is_volatile false
              :is_protected false
              :pass_attr :NotMethod
              :self_argument nil
              :codims []
            )
            "s" (Variable
              :parent_symtab 1
              :name "s"
              :dependencies []
              :intent :Local
              :symbolic_value nil
              :value nil
              :storage :Default
              :type (Set
                :type (Integer
                  :kind 4
                )
              )
              :type_declaration nil
              :abi :Source
              :access :Public
              :presence :Required
              :value_attr false
              :target_attr false
              :contiguous_attr false
              :bindc_name nil
              :is_volatile false
              :is_protected false
              :pass_attr :NotMethod
              :self_argument nil
              :codims []
            )
          }
        )
        :name "main"
        :dependencies []
        :body [
          (Assignment
            :target (Var
              :v (SymbolRef 1 "s")
            )
            :value (SetConstant
              :elements [
                (IntegerConstant
                  :n 1
                  :type (Integer
                    :kind 4
                  )
                  :intboz_type :Decimal
                )
                (IntegerConstant
                  :n 2
                  :type (Integer
                    :kind 4
                  )
                  :intboz_type :Decimal
                )
              ]
              :type (Set
                :type (Integer
                  :kind 4
                )
              )
            )
            :overloaded nil
            :realloc_lhs false
            :move_allocation false
          )
          (Assignment
            :target (Var
              :v (SymbolRef 1 "i")
            )
            :value (SetLen
              :arg (Var
                :v (SymbolRef 1 "s")
              )
              :type (Integer
                :kind 4
              )
              :value nil
            )
            :overloaded nil
            :realloc_lhs false
            :move_allocation false
          )
          (Assignment
            :target (Var
              :v (SymbolRef 1 "p")
            )
            :value (SetContains
              :left (Var
                :v (SymbolRef 1 "s")
              )
              :right (IntegerConstant
                :n 1
                :type (Integer
                  :kind 4
                )
                :intboz_type :Decimal
              )
              :type (Logical
                :kind 4
              )
              :value nil
            )
            :overloaded nil
            :realloc_lhs false
            :move_allocation false
          )
          (Assignment
            :target (Var
              :v (SymbolRef 1 "i")
            )
            :value (SetPop
              :a (Var
                :v (SymbolRef 1 "s")
              )
              :type (Integer
                :kind 4
              )
              :value nil
            )
            :overloaded nil
            :realloc_lhs false
            :move_allocation false
          )
          (SetInsert
            :a (Var
              :v (SymbolRef 1 "s")
            )
            :ele (IntegerConstant
              :n 3
              :type (Integer
                :kind 4
              )
              :intboz_type :Decimal
            )
          )
          (SetRemove
            :a (Var
              :v (SymbolRef 1 "s")
            )
            :ele (IntegerConstant
              :n 2
              :type (Integer
                :kind 4
              )
              :intboz_type :Decimal
            )
          )
          (SetClear
            :a (Var
              :v (SymbolRef 1 "s")
            )
          )
        ]
      )
    }
  )
  :items []
)

See Also

Set, ListLen