Module: Minjs::ECMA262::BinaryOperation

Included in:
ExpAdd, ExpAnd, ExpComma, ExpDiv, ExpEq, ExpGt, ExpGtEq, ExpIn, ExpInstanceOf, ExpLShift, ExpLogicalAnd, ExpLogicalOr, ExpLt, ExpLtEq, ExpMod, ExpMul, ExpNotEq, ExpOr, ExpRShift, ExpStrictEq, ExpStrictNotEq, ExpSub, ExpURShift, ExpXor
Defined in:
lib/minjs/ecma262/expression.rb

Overview

Module of typically binary operation expression.

Typically binary operation expression has two values(val, val2) and operation symbol.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#val ⇒ Object (readonly)

Returns the value of attribute val.



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# File 'lib/minjs/ecma262/expression.rb', line 65

def val
  @val
end

#val2 ⇒ Object (readonly)

Returns the value of attribute val2.



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# File 'lib/minjs/ecma262/expression.rb', line 65

def val2
  @val2
end

Instance Method Details

#==(obj) ⇒ Object

compare object



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# File 'lib/minjs/ecma262/expression.rb', line 91

def ==(obj)
  self.class == obj.class and self.val == obj.val and self.val2 == obj.val2
end

#add_paren ⇒ Object

add parenthesis if need



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# File 'lib/minjs/ecma262/expression.rb', line 79

def add_paren
  if @val.priority > self.priority
    @val = ExpParen.new(@val)
  end
  if @val2.priority > self.priority
    @val2 = ExpParen.new(@val2)
  end

  self
end

#deep_dup ⇒ Object

duplicate object

See Also:



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# File 'lib/minjs/ecma262/expression.rb', line 97

def deep_dup
  self.class.new(@val.deep_dup, @val2.deep_dup)
end

#remove_paren ⇒ Object

remove parenthesis if possible



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# File 'lib/minjs/ecma262/expression.rb', line 68

def remove_paren
  if @val.kind_of? ExpParen and @val.val.priority <= self.priority
    @val = @val.val if @val.remove_paren?
  end
  if @val2.kind_of? ExpParen and @val2.val.priority < self.priority
    @val2 = @val2.val
  end
  self
end

#replace(from, to) ⇒ Object

Replaces children object.

See Also:



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# File 'lib/minjs/ecma262/expression.rb', line 103

def replace(from, to)
  if @val .eql? from
    @val = to
  elsif @val2 .eql? from
    @val2 = to
  end
end

#to_js(options = {}) ⇒ Object

Returns a ECMAScript string containg the representation of element.

See Also:



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# File 'lib/minjs/ecma262/expression.rb', line 121

def to_js(options = {})
  concat options, @val, sym, @val2
end

#traverse(parent) {|parent, _self| ... } ⇒ Object

Traverses this children and itself with given block.

Yields:

  • (parent, _self)

Yield Parameters:

See Also:



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# File 'lib/minjs/ecma262/expression.rb', line 113

def traverse(parent, &block)
  @val.traverse(self, &block)
  @val2.traverse(self, &block)
  yield parent, self
end