Class: Grammar::Ruby::Code::Or

Inherits:
List show all
Defined in:
lib/grammar/ruby/code.rb

Constant Summary

Constants inherited from Grammar::Ruby::Code

False, FalseTerminator, Implicit, Nil, Self, True

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from List

#_codes, #_lines, #_never, #_operator0, #_paren, #initialize

Methods inherited from Grammar::Ruby::Code

[], #_assign, #_classname, #_code_self, #_codes, #_data, #_def, #_dot, #_else, #_ensure, #_equal, #_immediate, #_inspect, #_lines, #_locals, #_never, #_not, #_question, #_rand, #_rcond, #_rescue, #_rstep, #_splat, #_step, #_to_block, #_unless, #_until, #_while, #initialize, #method_missing

Constructor Details

This class inherits a constructor from Grammar::Ruby::Code::List

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Grammar::Ruby::Code

Class Method Details

.new(operands) ⇒ Object 



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# File 'lib/grammar/ruby/code.rb', line 572

def self.new(operands)
    (operands.size==1) ? operands[0] : super
end

Instance Method Details

#_always ⇒ Object 



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# File 'lib/grammar/ruby/code.rb', line 578

def _always
    @operands.last._always
end

#_and ⇒ Object

:yield:



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# File 'lib/grammar/ruby/code.rb', line 590

def _and # :yield:
    after = yield
    last = @operands.last
    (!last._never||after._always) ? And.new(after._rand(operands = [self])) : 
    last._unless(
        (@operands.size==2) ? @operands.first : (@operands.pop;self),
        after)
end

#_mid(before) ⇒ Object 



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# File 'lib/grammar/ruby/code.rb', line 598

def _mid(before)
    @operands.pop._mid(@operands)
    if @operands.size==1
        @operands.first._mid(before)
    else
        before << self
    end
end

#_operator ⇒ Object 



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# File 'lib/grammar/ruby/code.rb', line 575

def _operator
    " || "
end

#_or ⇒ Object

:yield:



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# File 'lib/grammar/ruby/code.rb', line 581

def _or # :yield:
    _always ? self :
    (yield._ror(@operands); self)
end

#_ror(before) ⇒ Object 



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# File 'lib/grammar/ruby/code.rb', line 585

def _ror(before)
    @operands[0] = before.pop._step(@operands[0]) if
        before.last._never
    before.concat(@operands)
end