Class: DSLCompose::Reader::ExecutionReader::ArgumentsReader

Inherits:
Object
  • Object
show all
Defined in:
lib/dsl_compose/reader/execution_reader/arguments_reader.rb

Overview

This class is part of a decorator for DSL executions.

Instance Method Summary collapse

Constructor Details

#initialize(arguments, argument_values) ⇒ ArgumentsReader

When instantiated, this class dynamically provides methods which corespiond to argument names and returns the argument value.

‘arguments` should be the DSL Arguments object, as this represents the possible arguments `argument_values` is a key/value object representing the actual values which were provided when the DSL was executed

This class is used to represent both DSL arguments, and dsl_method arguments



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# File 'lib/dsl_compose/reader/execution_reader/arguments_reader.rb', line 16

def initialize arguments, argument_values
  @arguments = arguments
  @argument_values = argument_values
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name) ⇒ Object

catch and process any method calls, if arguments exist with the same name as the method call, then return the appropriate value, otherwise raise an error



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# File 'lib/dsl_compose/reader/execution_reader/arguments_reader.rb', line 23

def method_missing method_name
  # fetch the argument to ensure it exists (this will raise an error if it does not)
  argument = @arguments.argument method_name
  # return the argument value, or nil if the argument was not used
  @argument_values.arguments[argument.name]
end

Instance Method Details

#has_argument?(argument_name) ⇒ Boolean

returns true if the DSL has an argument with the provided name

Returns:

  • (Boolean) 


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# File 'lib/dsl_compose/reader/execution_reader/arguments_reader.rb', line 31

def has_argument? argument_name
  @arguments.has_argument? argument_name
end

#respond_to_missing?(method_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dsl_compose/reader/execution_reader/arguments_reader.rb', line 35

def respond_to_missing? method_name
  @arguments.has_argument? method_name
end