Class: Macrow

Inherits:
Object
  • Object
show all
Defined in:
lib/macrow.rb,
lib/macrow/error.rb,
lib/macrow/version.rb more...

Defined Under Namespace

Classes: ReplaceError

Constant Summary collapse

VERSION = 
"0.1.1"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.inherited(child) ⇒ Object

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# File 'lib/macrow.rb', line 6

def inherited(child)
  child.instance_variable_set(:@rule_words, rule_words.dup)
end

.macro_prefix(prefix) ⇒ Object

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# File 'lib/macrow.rb', line 18

def macro_prefix(prefix)
  @macro_prefix = prefix
end

.macro_suffix(suffix) ⇒ Object

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# File 'lib/macrow.rb', line 22

def macro_suffix(suffix)
  @macro_suffix = suffix
end

.replace_string(keyword) ⇒ Object

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# File 'lib/macrow.rb', line 41

def replace_string(keyword)
  "#{_macro_prefix}#{keyword}#{_macro_suffix}"
end

.rule(keyword, &block) ⇒ Object

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# File 'lib/macrow.rb', line 26

def rule(keyword, &block)
  rule_words << keyword

  define_method "apply_rule_for_#{keyword}!" do |str, object|
    if str.include? replace_string(keyword)
      begin
        str.gsub!(replace_string(keyword), block.call(object).to_s)
        str
      rescue NoMethodError => e
        fail Macrow::ReplaceError, "NoMethodError is raised on applying rule: '#{keyword}'. Please check your rule. Error message is '#{e.message}'"
      end
    end
  end
end

.rule_words ⇒ Object

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# File 'lib/macrow.rb', line 10

def rule_words
  @rule_words ||= []
end

.rules ⇒ Object

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# File 'lib/macrow.rb', line 14

def rules
  yield
end

Instance Method Details

#apply_all_rules(str, object = nil) ⇒ Object Also known as: apply

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# File 'lib/macrow.rb', line 56

def apply_all_rules(str, object = nil)
  return if str.nil? || !str.is_a?(String)

  dup_str = str.dup

  self.class.rule_words.each do |rule_word|
    apply_rule!(rule_word, dup_str, object)
  end

  dup_str
end

#apply_rule!(rule, str, object) ⇒ Object

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# File 'lib/macrow.rb', line 69

def apply_rule!(rule, str, object)
  __send__("apply_rule_for_#{rule}!", str, object)
end