48 lines
1.4 KiB
Ruby
48 lines
1.4 KiB
Ruby
module Bosl
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Compiler.class_eval do
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# function attr_reader :name, :params, :body , :receiver
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def on_function expression
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# puts expression.inspect
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return_type , name , parameters, kids , receiver = *expression
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name = name.to_a.first
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args = parameters.to_a.collect do |p|
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raise "error, argument must be a identifier, not #{p}" unless p.type == :parameter
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p[2]
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end
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if receiver
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# compiler will always return slot. with known value or not
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r = receiver.first
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if( r.is_a? Parfait::Class )
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class_name = r.value.name
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else
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if( r != :self)
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raise "unimplemented case in function #{r}"
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else
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r = Virtual::Self.new()
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class_name = method.for_class.name
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end
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end
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else
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r = Virtual::Self.new(:int)
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class_name = method.for_class.name
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end
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new_method = Virtual::MethodSource.create_method(class_name, return_type, name , args )
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new_method.source.receiver = r
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new_method.for_class.add_instance_method new_method
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old_method = @method
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@method = new_method
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#frame = frame.new_frame
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kids.to_a.each do |ex|
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return_type = process(ex)
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raise return_type.inspect if return_type.is_a? Virtual::Instruction
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end
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@method = old_method
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new_method.source.return_type = return_type
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Virtual::Return.new(return_type)
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end
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end
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end
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