Class: ShowCode::Code

Inherits:
Object
  • Object
show all
Defined in:
lib/show_code/code.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(location) ⇒ Code

Returns a new instance of Code.



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# File 'lib/show_code/code.rb', line 6

def initialize(location)
  @file         = location.file
  file_lines    = File.readlines(@file) if @file

  related_lines = file_lines[(location.line - 1)..-1] || []
  codes         = extract_method_code related_lines
  @lines        = codes.count
  @content      = codes.join
end

Instance Attribute Details

#content ⇒ Object (readonly)

Returns the value of attribute content.



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# File 'lib/show_code/code.rb', line 4

def content
  @content
end

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/show_code/code.rb', line 4

def file
  @file
end

#lines ⇒ Object (readonly)

Returns the value of attribute lines.



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# File 'lib/show_code/code.rb', line 4

def lines
  @lines
end

#owner ⇒ Object (readonly)

Returns the value of attribute owner.



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# File 'lib/show_code/code.rb', line 4

def owner
  @owner
end

Instance Method Details

#expression_end?(codes) ⇒ Boolean

refer: gist.github.com/judofyr/1373383

Returns:

  • (Boolean) 


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# File 'lib/show_code/code.rb', line 26

def expression_end?(codes)
  str = codes.join

  catch(:valid) do
    eval("BEGIN{throw :valid}; #{str}")
  end

  # skip , or \
  str !~ /[,\\]\s*\z/
rescue SyntaxException
  false
end

#extract_method_code(related_lines) ⇒ Object

Raises:

  • (SyntaxError) 


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# File 'lib/show_code/code.rb', line 16

def extract_method_code(related_lines)
  codes = []
  related_lines.each do |value|
    codes << value
    return codes if expression_end?(codes)
  end
  raise SyntaxError, "unexpected $end"
end

#greet ⇒ Object

Example: ShowCode ‘ShowCode::Code.new.greet’



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# File 'lib/show_code/code.rb', line 40

def greet
  puts 'Hello ShowCode!'
end