22 lines
782 B
Ruby
22 lines
782 B
Ruby
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module Ast
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class ReturnExpression < Expression
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# attr_reader :expression
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def compile context
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into = context.function
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puts "compiling return expression #{expression}, now return in return_regsiter"
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expression_value = expression.compile(context)
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# copied from function expression: TODO make function
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return_reg = Vm::Integer.new(Vm::RegisterMachine.instance.return_register)
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if expression_value.is_a?(Vm::IntegerConstant) or expression_value.is_a?(Vm::ObjectConstant)
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return_reg.load into , expression_value
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else
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return_reg.move( into, expression_value ) if expression_value.register_symbol != return_reg.register_symbol
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end
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#function.set_return return_reg
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return return_reg
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end
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end
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end
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