31 lines
770 B
Ruby
31 lines
770 B
Ruby
module Ast
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class WhileExpression < Expression
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attr_reader :condition, :body
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def initialize condition, body
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@condition , @body = condition , body
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end
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def inspect
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self.class.name + ".new(" + condition.inspect + ", " + body.inspect + " )"
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end
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def to_s
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"while(#{condition}) do\n" + body.join("\n") + "\nend\n"
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end
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def attributes
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[:condition, :body]
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end
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def compile context , into
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cond_val = condition.compile(context , into)
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#set up branches for bodies
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# jump to end if done
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last = nil
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body.each do |part|
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last = part.compile(context , into )
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puts "compiled in while #{last.inspect}"
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end
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#jump back to test
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return last
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end
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end
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end |