Class: SyntaxTree::ConditionalFormatter

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

Overview

Formats an If or Unless node.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(keyword, node) ⇒ ConditionalFormatter

Returns a new instance of ConditionalFormatter.



5169
5170
5171
5172
 
# File 'lib/syntax_tree/node.rb', line 5169

def initialize(keyword, node)
  @keyword = keyword
  @node = node
end

Instance Attribute Details

#keyword ⇒ Object (readonly)

String

the keyword associated with this conditional



5164
5165
5166
 
# File 'lib/syntax_tree/node.rb', line 5164

def keyword
  @keyword
end

#node ⇒ Object (readonly)

If | Unless

the node that is being formatted



5167
5168
5169
 
# File 'lib/syntax_tree/node.rb', line 5167

def node
  @node
end

Instance Method Details

#format(q) ⇒ Object 



5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
 
# File 'lib/syntax_tree/node.rb', line 5174

def format(q)
  # If we can transform this node into a ternary, then we're going to print
  # a special version that uses the ternary operator if it fits on one line.
  if Ternaryable.call(q, node)
    format_ternary(q)
    return
  end

  # If the predicate of the conditional contains an assignment (in which
  # case we can't know for certain that that assignment doesn't impact the
  # statements inside the conditional) then we can't use the modifier form
  # and we must use the block form.
  if ContainsAssignment.call(node.predicate)
    format_break(q, force: true)
    return
  end

  if node.consequent || node.statements.empty? || contains_conditional?
    q.group { format_break(q, force: true) }
  else
    q.group do
      q
        .if_break { format_break(q, force: false) }
        .if_flat do
          Parentheses.flat(q) do
            q.format(node.statements)
            q.text(" #{keyword} ")
            q.format(node.predicate)
          end
        end
    end
  end
end