Class: Ree::Contracts::ArgContracts::RangeOf

Inherits:
Object
  • Object
show all
Extended by:
Squarable
Includes:
Truncatable
Defined in:
lib/ree/contracts/arg_contracts/range_of.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Squarable

[]

Methods included from Truncatable

#truncate

Constructor Details

#initialize(*contracts) ⇒ RangeOf

Returns a new instance of RangeOf.



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# File 'lib/ree/contracts/arg_contracts/range_of.rb', line 11

def initialize(*contracts)
  if contracts.size != 1
    raise BadContractError, 'RangeOf should accept exactly one contract'
  end

  @validator = Validators.fetch_for(contracts.first)
end

Instance Attribute Details

#validator ⇒ Object (readonly)

Returns the value of attribute validator.



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# File 'lib/ree/contracts/arg_contracts/range_of.rb', line 9

def validator
  @validator
end

Instance Method Details

#message(value, name, lvl = 1) ⇒ Object 



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# File 'lib/ree/contracts/arg_contracts/range_of.rb', line 29

def message(value, name, lvl = 1)
  unless value.is_a?(Range)
    return "expected Range, got #{value.class} => #{truncate(value.inspect)}"
  end

  errors = []
  sps = "  " * lvl

  unless validator.call(value.begin)
    msg = validator.message(value.begin, "#{name}.begin", lvl + 1)
    errors << "\n\t#{sps} - #{name}.begin: #{msg}"
  end

  unless validator.call(value.end)
    msg = validator.message(value.end, "#{name}.end", lvl + 1)
    errors << "\n\t#{sps} - #{name}.end: #{msg}"
  end

  errors.join
end

#to_s ⇒ Object 



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# File 'lib/ree/contracts/arg_contracts/range_of.rb', line 25

def to_s
  "RangeOf[#{validator.to_s}]"
end

#valid?(value) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ree/contracts/arg_contracts/range_of.rb', line 19

def valid?(value)
  value.is_a?(Range) &&
    validator.call(value.begin) &&
    validator.call(value.end)
end