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



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# 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) 


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# 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) 


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

def append_without_prefix(string)
  write(string)
  self
end

#capture_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.

Capture the content written to the buffer within the block

Returns:

  • (String) 


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

def capture_content
  size_before = @content.size
  yield
  @content[size_before..-1]
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) 


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

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) 


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

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) 


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

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) 


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

def nl
  write(NL)
  self
end

#root_indent ⇒ Object 



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# File 'lib/unparser/buffer.rb', line 83

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) 


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

def unindent
  @indent -= 1
  self
end

#write(fragment) ⇒ self

Write raw fragment to buffer

Does not do indentation logic.

Parameters:

  • fragment (String)

Returns:

  • (self) 


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# File 'lib/unparser/buffer.rb', line 129

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