42 lines
1.0 KiB
Ruby
42 lines
1.0 KiB
Ruby
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# 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 context
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Vm::IntegerConstant.new value
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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 a variable resolves it. if it wasn't defined, raise an exception
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def compile context
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raise "Undefined variable #{name}, defined locals #{context.locals.keys.join('-')}" unless context.locals.has_key?(name)
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context.locals[name]
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end
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end
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class ModuleName < NameExpression
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def compile context
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clazz = context.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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puts "CLAZZ #{clazz}"
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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 context
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value = Vm::StringConstant.new(string)
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context.object_space.add_object value
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value
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end
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end
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end
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