Module: Cel::Macro

Defined in:
lib/cel/macro.rb

Class Method Summary collapse

Class Method Details

.all(collection, identifier, predicate, context:) ⇒ Object 



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# File 'lib/cel/macro.rb', line 45

def all(collection, identifier, predicate, context:)
  collection.all? do |element, *|
    Program.new(context.merge(identifier.to_sym => element)).evaluate(predicate).value
  end
end

.exists(collection, identifier, predicate, context:) ⇒ Object 



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# File 'lib/cel/macro.rb', line 51

def exists(collection, identifier, predicate, context:)
  collection.any? do |element, *|
    Program.new(context.merge(identifier.to_sym => element)).evaluate(predicate).value
  end
end

.exists_one(collection, identifier, predicate, context:) ⇒ Object 



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# File 'lib/cel/macro.rb', line 57

def exists_one(collection, identifier, predicate, context:)
  collection.one? do |element, *|
    Program.new(context.merge(identifier.to_sym => element)).evaluate(predicate).value
  end
end

.filter(collection, identifier, predicate, context:) ⇒ Object 



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# File 'lib/cel/macro.rb', line 63

def filter(collection, identifier, predicate, context:)
  collection.select do |element, *|
    Program.new(context.merge(identifier.to_sym => element)).evaluate(predicate).value
  end
end

.has(invoke) ⇒ Object

If e evaluates to a protocol buffers version 2 message and f is a defined field:

If f is a repeated field or map field, has(e.f) indicates whether the field is non-empty.
If f is a singular or oneof field, has(e.f) indicates whether the field is set.

If e evaluates to a protocol buffers version 3 message and f is a defined field:

If f is a repeated field or map field, has(e.f) indicates whether the field is non-empty.
If f is a oneof or singular message field, has(e.f) indicates whether the field is set.
If f is some other singular field, has(e.f) indicates whether the field's value is its default
  value (zero for numeric fields, false for booleans, empty for strings and bytes).



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# File 'lib/cel/macro.rb', line 15

def has(invoke)
  var = invoke.var
  func = invoke.func

  case var
  when Message
    # If e evaluates to a message and f is not a declared field for the message,
    # has(e.f) raises a no_such_field error.
    raise NoSuchFieldError.new(var, func) unless var.field?(func)

    Bool.new(!var.public_send(func).nil?)
  when Map
    # If e evaluates to a map, then has(e.f) indicates whether the string f
    # is a key in the map (note that f must syntactically be an identifier).
    Bool.new(var.respond_to?(func))
  else
    # In all other cases, has(e.f) evaluates to an error.
    raise EvaluateError, "#{invoke} is not supported"
  end
end

.map(collection, identifier, predicate, context:) ⇒ Object 



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# File 'lib/cel/macro.rb', line 69

def map(collection, identifier, predicate, context:)
  collection.map do |element, *|
    Program.new(context.merge(identifier.to_sym => element)).evaluate(predicate)
  end
end

.matches(string, pattern) ⇒ Object 



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# File 'lib/cel/macro.rb', line 40

def matches(string, pattern)
  pattern = Regexp.new(pattern)
  Bool.new(pattern.match?(string))
end

.size(literal) ⇒ Object 



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# File 'lib/cel/macro.rb', line 36

def size(literal)
  literal.size
end