80 lines
2.0 KiB
Ruby
80 lines
2.0 KiB
Ruby
# collection of the simple ones, int and strings and such
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module Ast
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class IntegerExpression < Expression
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# attr_reader :value
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def compile frame , method
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Virtual::IntegerConstant.new value
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end
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end
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class TrueExpression
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def compile frame , method
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Virtual::TrueValue.new
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end
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end
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class FalseExpression
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def compile frame , method
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Virtual::FalseValue.new
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end
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end
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class NilExpression
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def compile frame , method
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Virtual::NilValue.new
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end
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end
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class NameExpression < Expression
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# attr_reader :name
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# compiling name needs to check if it's a variable and if so resolve it
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# otherwise it's a method without args and a send is ussued.
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# this makes the namespace static, ie when eval and co are implemented method needs recompilation
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def compile frame , method
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return Virtual::SelfReference.new() if name == :self
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if method.has_var(name)
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frame.compile_get(method , name )
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else
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frame.compile_send( method , name )
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end
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end
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end
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class ModuleName < NameExpression
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def compile frame , method
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clazz = ::Virtual::Object.space.get_or_create_class name
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raise "uups #{clazz}.#{name}" unless clazz
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#class qualifier, means call from metaclass
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#clazz = clazz.meta_class
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clazz
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end
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end
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class StringExpression < Expression
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# attr_reader :string
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def compile frame , method
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value = Virtual::StringConstant.new(string)
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::Virtual::Object.space.add_object value
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value
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end
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end
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class AssignmentExpression < Expression
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#attr_reader :left, :right
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def compile frame , method
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raise "must assign to NameExpression , not #{left}" unless left.instance_of? NameExpression
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r = right.compile(frame,method)
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frame.compile_set( method , left.name , r )
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end
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end
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class VariableExpression < NameExpression
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def compile frame ,method
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method.add Virtual::ObjectGet.new(name)
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end
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end
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end |