rubyx/lib/soml/compiler/name_expression.rb
2015-10-23 14:22:55 +03:00

35 lines
1.3 KiB
Ruby

module Soml
Compiler.class_eval do
# attr_reader :name
# compiling name needs to check if it's a variable and if so resolve it
# otherwise it's a method without args and a send is issued.
# whichever way this goes the result is stored in the return slot (as all compiles)
def on_name statement
name = statement.to_a.first
if( name == :self)
ret = use_reg @clazz.name
add_code Register.get_slot(statement , :message , :receiver , ret )
return ret
end
# either an argument, so it's stored in message
if( index = @method.has_arg(name))
ret = use_reg @method.arguments[index].type
add_code Register.get_slot(statement , :message , index + Parfait::Message.offset , ret )
return ret
else # or a local so it is in the frame
index = @method.has_local( name )
if(index)
frame = use_reg :Frame
add_code Register.get_slot(statement , :message , :frame , frame )
ret = use_reg @method.locals[index].type
add_code Register.get_slot(statement , frame , index + Parfait::Frame.offset , ret )
return ret
end
end
raise "must define variable #{name} before using it"
end
end #module
end