Class: Unparser::Buffer

Inherits:
Object
  • Object
show all
Defined in:
lib/unparser/buffer.rb

Overview

Buffer used to emit into

Constant Summary collapse

NL = 
"\n".freeze

Instance Method Summary collapse

Constructor Details

#initialize ⇒ undefined

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize object



16
17
18
19
 
# File 'lib/unparser/buffer.rb', line 16

def initialize
  @content = +''
  @indent = 0
end

Instance Method Details

#append(string) ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Append string

Parameters:

  • string (String)

Returns:

  • (self) 


29
30
31
32
33
34
35
 
# File 'lib/unparser/buffer.rb', line 29

def append(string)
  if @content[-1].eql?(NL)
    prefix
  end
  write(string)
  self
end

#append_without_prefix(string) ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Append a string without an indentation prefix

Parameters:

  • string (String)

Returns:

  • (self) 


45
46
47
 
# File 'lib/unparser/buffer.rb', line 45

def append_without_prefix(string)
  write(string)
end

#content ⇒ String

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Return content of buffer

Returns:

  • (String) 


104
105
106
 
# File 'lib/unparser/buffer.rb', line 104

def content
  @content.dup.freeze
end

#fresh_line? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Test for a fresh line

Returns:

  • (Boolean) 


94
95
96
 
# File 'lib/unparser/buffer.rb', line 94

def fresh_line?
  @content.empty? || @content[-1].eql?(NL)
end

#indent ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Increase indent

Returns:

  • (self) 


55
56
57
58
 
# File 'lib/unparser/buffer.rb', line 55

def indent
  @indent += 1
  self
end

#nl ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Write newline

Returns:

  • (self) 


77
78
79
 
# File 'lib/unparser/buffer.rb', line 77

def nl
  write(NL)
end

#root_indent ⇒ Object 



81
82
83
84
85
86
 
# File 'lib/unparser/buffer.rb', line 81

def root_indent
  before = @indent
  @indent = 0
  yield
  @indent = before
end

#unindent ⇒ self

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Decrease indent

Returns:

  • (self) 


66
67
68
69
 
# File 'lib/unparser/buffer.rb', line 66

def unindent
  @indent -= 1
  self
end

#write(fragment) ⇒ self

Write raw fragment to buffer

Does not do indentation logic.

Parameters:

  • fragment (String)

Returns:

  • (self) 


115
116
117
118
 
# File 'lib/unparser/buffer.rb', line 115

def write(fragment)
  @content << fragment
  self
end