Class: Cinch::Pattern Private

Inherits:

Object

• Object
• Cinch::Pattern

show all

Defined in:

lib/cinch/pattern.rb

Overview

Instance Attribute Summary (collapse)

• - (Object) pattern readonly private
• - (Object) prefix readonly private
• - (Object) suffix readonly private

Class Method Summary (collapse)

• + (Object) generate(type, argument) private
• + (Regexp^?) obj_to_r(obj, anchor = nil) private
• + (Object) resolve_proc(obj, msg = nil) private

Instance Method Summary (collapse)

• - (Pattern) initialize(prefix, pattern, suffix) constructor private

  A new instance of Pattern.

• - (Object) to_r(msg = nil) private

46
47
48

# File 'lib/cinch/pattern.rb', line 46

def initialize(prefix, pattern, suffix)
  @prefix, @pattern, @suffix = prefix, pattern, suffix
end

45
46
47

# File 'lib/cinch/pattern.rb', line 45

def pattern
  @pattern
end

43
44
45

# File 'lib/cinch/pattern.rb', line 43

def prefix
  @prefix
end

44
45
46

# File 'lib/cinch/pattern.rb', line 44

def suffix
  @suffix
end

34
35
36
37
38
39
40
41

# File 'lib/cinch/pattern.rb', line 34

def self.generate(type, argument)
  case type
  when :ctcp
    Pattern.new(/^/, /#{Regexp.escape(argument.to_s)}(?:$| .+)/, nil)
  else
    raise ArgumentError, "Unsupported type: #{type.inspect}"
  end
end

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

# File 'lib/cinch/pattern.rb', line 9

def self.obj_to_r(obj, anchor = nil)
  case obj
  when Regexp, NilClass
    return obj
  else
    escaped = Regexp.escape(obj.to_s)
    case anchor
    when :start
      return Regexp.new("^" + escaped)
    when :end
      return Regexp.new(escaped + "$")
    when nil
      return Regexp.new(Regexp.escape(obj.to_s))
    end
  end
end

26
27
28
29
30
31
32

# File 'lib/cinch/pattern.rb', line 26

def self.resolve_proc(obj, msg = nil)
  if obj.is_a?(Proc)
    return resolve_proc(obj.call(msg), msg)
  else
    return obj
  end
end

50
51
52
53
54
55
56
57
58
59
60
61
62
63

# File 'lib/cinch/pattern.rb', line 50

def to_r(msg = nil)
  pattern = Pattern.resolve_proc(@pattern, msg)

  case pattern
  when Regexp, NilClass
    prefix  = Pattern.obj_to_r(Pattern.resolve_proc(@prefix, msg), :start)
    suffix  = Pattern.obj_to_r(Pattern.resolve_proc(@suffix, msg), :end)
    /#{prefix}#{pattern}#{suffix}/
  else
    prefix  = Pattern.obj_to_r(Pattern.resolve_proc(@prefix, msg))
    suffix  = Pattern.obj_to_r(Pattern.resolve_proc(@suffix, msg))
    /^#{prefix}#{Pattern.obj_to_r(pattern)}#{suffix}$/
  end
end