require 'slim/logic_less'

SCOPE = {
  fn: ->(&block) { "<fn>#{block.call}</fn>" },
  string: "string variable",
  list: [ "list item 1", "list item 2", "list item 3" ],
}

def render(template_string)
  p Slim::Template.new { template_string }.render(SCOPE)
end


# Some example lambda calls

render %q{
== fn
  p literal
}
#=> "<fn><p>literal</p></fn>"

render %q{
== fn
  p = string
}
#=> "<fn><p>string variable</p></fn>"


# Some example list iterations

render %q{
- list
  p literal
}
#=> "<p>literal</p><p>literal</p><p>literal</p>"

render %q{
- list
  p = string
}
#=> "<p>string variable</p><p>string variable</p><p>string variable</p>"

render %q{
- list
  p = self
}
#=> "<p>list item 1</p><p>list item 2</p><p>list item 3</p>"


# Try to combine with the lambda wrapped in the list expressions, but all of these result
# in "undefined method `call' for nil:NilClass (NoMethodError)"

render %q{
- list
  == fn
    p literal
}
#=> raises NoMethodError
# Expected result:
#   "<fn><p>literal</p></fn><fn><p>literal</p></fn><fn><p>literal</p></fn>"

render %q{
- list
  == fn
    p = string
}
#=> raises NoMethodError
# Expected result:
#   "<fn><p>string variable</p></fn><fn><p>string variable</p></fn><fn><p>string variable</p></fn>"

render %q{
- list
  == fn
    p = self
}
#=> raises NoMethodError
# Expected result:
#   "<fn><p>list item 1</p></fn><fn><p>list item 2</p></fn><fn><p>list item 3</p></fn>"