Class: SQLTree::Node::Variable

Inherits:
Base
  • Object
show all
Defined in:
lib/sql_tree/node/variable.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

[], #inspect, #quote_str, #quote_var

Constructor Details

#initialize(name) ⇒ Variable

Returns a new instance of Variable.



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# File 'lib/sql_tree/node/variable.rb', line 7

def initialize(name)
  @name = name
end

Instance Attribute Details

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/sql_tree/node/variable.rb', line 5

def name
  @name
end

Class Method Details

.parse(tokens) ⇒ Object 



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# File 'lib/sql_tree/node/variable.rb', line 19

def self.parse(tokens)
  if SQLTree::Token::Variable === tokens.peek
    if tokens.peek(2) == SQLTree::Token::DOT
      SQLTree::Node::Field.parse(tokens)
    else
      self.new(tokens.next.literal)
    end
  else
    raise SQLTree::Parser::UnexpectedToken.new(tokens.peek, :variable)
  end
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/sql_tree/node/variable.rb', line 15

def ==(other)
  other.name == self.name
end

#to_sql ⇒ Object 



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# File 'lib/sql_tree/node/variable.rb', line 11

def to_sql
  quote_var(@name)
end