Class: CodeConcatenateInstruction
Instance Attribute Summary
Attributes inherited from Instruction
#context
Instance Method Summary
collapse
Methods inherited from Instruction
all_instructions, #go, inherited, #initialize, #needs, #pushes, to_nudgecode
Constructor Details
This class inherits a constructor from Instruction
Instance Method Details
#cleanup ⇒ Object
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# File 'lib/instructions/code/code_concatenate.rb', line 28
def cleanup
pushes :code, @result
end
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#derive ⇒ Object
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# File 'lib/instructions/code/code_concatenate.rb', line 9
def derive
t1 = NudgeProgram.new(@arg1)
t2 = NudgeProgram.new(@arg2)
if t1.parses? && t2.parses?
if t1.linked_code.kind_of?(CodeblockPoint)
if t2.linked_code.kind_of?(CodeblockPoint)
new_tree = t1[1].contents + t2[1].contents
else
new_tree = t1[1].contents << t2.linked_code
end
else
new_tree = [t1.linked_code, t2.linked_code]
end
listed = CodeblockPoint.new(new_tree).blueprint
@result = ValuePoint.new("code", listed)
else
@result = ValuePoint.new("code", "block {}")
end
end
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#preconditions? ⇒ Boolean
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# File 'lib/instructions/code/code_concatenate.rb', line 2
def preconditions?
needs :code, 2
end
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#setup ⇒ Object
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# File 'lib/instructions/code/code_concatenate.rb', line 5
def setup
@arg2 = @context.pop_value(:code)
@arg1 = @context.pop_value(:code)
end
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