Class: SyntaxTree::Mermaid::Link

Inherits:
Object
  • Object
show all
Defined in:
lib/syntax_tree/mermaid.rb

Overview

This class represents a link between two nodes in a flowchart. It is not meant to be interacted with directly, but rather used as a data structure by the FlowChart class.

Constant Summary collapse

TYPES = 
%i[directed dotted].freeze
COLORS = 
%i[green red].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(from, to, label, type, color) ⇒ Link

Returns a new instance of Link.



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# File 'lib/syntax_tree/mermaid.rb', line 84

def initialize(from, to, label, type, color)
  raise unless TYPES.include?(type)
  raise if color && !COLORS.include?(color)

  @from = from
  @to = to
  @label = label
  @type = type
  @color = color
end

Instance Attribute Details

#color ⇒ Object (readonly)

Returns the value of attribute color.



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# File 'lib/syntax_tree/mermaid.rb', line 82

def color
  @color
end

#from ⇒ Object (readonly)

Returns the value of attribute from.



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# File 'lib/syntax_tree/mermaid.rb', line 82

def from
  @from
end

#label ⇒ Object (readonly)

Returns the value of attribute label.



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# File 'lib/syntax_tree/mermaid.rb', line 82

def label
  @label
end

#to ⇒ Object (readonly)

Returns the value of attribute to.



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# File 'lib/syntax_tree/mermaid.rb', line 82

def to
  @to
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/syntax_tree/mermaid.rb', line 82

def type
  @type
end

Instance Method Details

#render ⇒ Object 



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# File 'lib/syntax_tree/mermaid.rb', line 95

def render
  left_side, right_side, full_side = sides

  if label
    escaped = Mermaid.escape(label)
    "#{from.id} #{left_side} #{escaped} #{right_side} #{to.id}"
  else
    "#{from.id} #{full_side} #{to.id}"
  end
end