Class: RackConsole::SourceFile

Inherits:
Object
  • Object
show all
Defined in:
lib/rack_console/source_file.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source_location) ⇒ SourceFile

Returns a new instance of SourceFile.



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# File 'lib/rack_console/source_file.rb', line 4

def initialize source_location
  @file, @line = Array(source_location)
end

Instance Attribute Details

#block_beg ⇒ Object (readonly)

Returns the value of attribute block_beg.



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# File 'lib/rack_console/source_file.rb', line 9

def block_beg
  @block_beg
end

#block_end ⇒ Object (readonly)

Returns the value of attribute block_end.



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# File 'lib/rack_console/source_file.rb', line 9

def block_end
  @block_end
end

#block_indent ⇒ Object (readonly)

Returns the value of attribute block_indent.



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# File 'lib/rack_console/source_file.rb', line 9

def block_indent
  @block_indent
end

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/rack_console/source_file.rb', line 3

def file
  @file
end

#line ⇒ Object (readonly)

Returns the value of attribute line.



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# File 'lib/rack_console/source_file.rb', line 3

def line
  @line
end

#lines ⇒ Object

Returns the value of attribute lines.



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# File 'lib/rack_console/source_file.rb', line 8

def lines
  @lines
end

Instance Method Details

#highlight_block! ⇒ Object 



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# File 'lib/rack_console/source_file.rb', line 32

def highlight_block!
  block_indent = last_line = nil
  @lines.each do | l |
    indent = (l[:str] =~ /^(\s*)\S/ && $1) || ''
    add_classes = block_finished = nil
    case
    when l[:line] == @line
      @block_beg = l
      add_classes = [ :block, :block_begin ]
      @block_indent = indent
      block_indent = indent.size
    when block_indent && (indent.size  > block_indent || l[:str] =~ /^(\s*)$/)
      add_classes = [ :block, :block_body ]
    when block_indent && (indent.size  < block_indent)
      add_classes = nil
      block_finished = true
    when block_indent &&  indent.size == block_indent
      if l[:str] =~ /^(\s*)(ensure|rescue)\b/
        add_classes = [ :block, :block_body ]
      else
        @block_end = l
        add_classes = [ :block, :block_end ]
        block_indent = nil
        block_finished = true
      end
      add_classes = [ :block, :block_body ]
    end
    if add_classes
      l[:class].concat(add_classes).delete(:unselected_line)
    end
    break if block_finished
  end
  self
end

#load! ⇒ Object 



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# File 'lib/rack_console/source_file.rb', line 11

def load!
  @lines ||= File.read(@file).split("\n")

  line = 0
  @lines.map! do | l |
    line += 1
    c = [ :source_line ]
    case @line
    when nil
      c << :normal_line
    when line
      c << :selected_line
    else
      c << :unselected_line
    end
    { index: line - 1, line: line, str: l, class: c }
  end
  highlight_block! if @line
  self
end

#narrow_to_block!(context_lines = 2) ⇒ Object 



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# File 'lib/rack_console/source_file.rb', line 67

def narrow_to_block! context_lines = 2
  if @block_beg
    lineno = @block_beg[:line] - context_lines
    @lines = @lines.select{|l| l[:line] >= lineno }
  end
  if @block_end
    lineno = @block_end[:line] + context_lines
    @lines = @lines.select{|l| l[:line] <= lineno }
  end
  self
end