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Contents
# File: placeholder.rb
# Purpose: Implementation of the Placeholder class.
require_relative 'unary-element' # Load the superclass
module Macros4Cuke # Module used as a namespace
# Module containing all classes implementing the simple template engine
# used internally in Macros4Cuke.
module Templating
# Class used internally by the template engine.
# Represents a named placeholder in a template, that is,
# a name placed between <..> in the template.
# At rendition, a placeholder is replaced by the text value
# that is associated with it.
class Placeholder < UnaryElement
public
# Render the placeholder given the passed arguments.
# This method has the same signature as the {Engine#render} method.
# @return [String] The text value assigned to the placeholder.
# Returns an empty string when no value is assigned to the placeholder.
def render(aContextObject, theLocals)
actual_value = retrieve_value_from(aContextObject, theLocals)
result = case actual_value
when NilClass
''
when Array
# TODO: Move away from hard-coded separator.
actual_value.join('<br/>')
when String
actual_value
else
actual_value.to_s
end
return result
end
end # class
end # module
end # module
# End of file
Version data entries
6 entries across 6 versions & 1 rubygems