43 lines
1.5 KiB
Ruby
43 lines
1.5 KiB
Ruby
module Soml
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Compiler.class_eval do
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def on_field_access statement
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#puts statement.inspect
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receiver_ast , field_ast = *statement
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receiver = receiver_ast.first_from(:name)
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field_name = field_ast.first_from(:name)
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case receiver
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when :self
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index = @clazz.object_layout.variable_index(field_name)
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raise "field access, but no such field:#{field_name} for class #{@clazz.name}" unless index
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value = use_reg(@clazz.name) #TODO incorrect, this is the self, but should be the type of variable at index
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add_code Register.get_slot(statement , :message , :receiver , value )
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# reuse the register for next move
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move = Register.get_slot(statement, value , index , value )
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add_code move
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when :message
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#message Slot
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raise "message not yet"
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else
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if( index = @method.has_arg(receiver)) #argument
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value = use_reg @method.arguments[index].type
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code = Register.get_slot(statement , :message , Parfait::Message.get_indexed(index), value)
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else # or a local so it is in the frame
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index = @method.has_local( receiver )
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if(index)
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value = use_reg @method.locals[index].type
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frame = use_reg :Frame
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add_code Register.get_slot(statement , :message , :frame , frame )
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code = Register.get_slot(statement ,frame , Parfait::Frame.get_indexed(index) , value )
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else
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raise "Variable not defined #{name}"
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end
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end
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end
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value
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end
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end
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end
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