Class: Teer::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/teer/parser.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/teer/parser.rb', line 5

def initialize
  @helpers = {}
end

Instance Method Details

#register_helper(func, &fn) ⇒ Object 



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# File 'lib/teer/parser.rb', line 9

def register_helper(func, &fn)
  @helpers[func.to_sym] = fn
end

#render(template = '', ctx = {}) ⇒ Object 



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# File 'lib/teer/parser.rb', line 13

def render(template = '', ctx = {})
  rendered_template = template.dup
  template.scan(/{{\s*[\w\. ]+\s*}}/).map do |substr|
    key, func = parse_func(substr)
    value = value_from_ctx(ctx, key)
    if func
      raise ArgumentError, "Missing helper: '#{func}'" if !@helpers[func.to_sym]
      value = @helpers[func.to_sym].call(ctx, value)
    end
    rendered_template[substr] = value.to_s
  end
  rendered_template
end