41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
# abstract syntax tree (ast)
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# This Layer is semi automagically created by parslet using the transform
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# It in turn is responsible for the transformation to the next layer, vm code
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# This happens in the compile function which must return a Vm::Code derivative
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# PS: compare is only for tests and should be factored out to there
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module Ast
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class Expression
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def eval
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raise "abstract #{self}"
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end
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def compile context
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raise "abstract #{self}"
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end
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def inspectt
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self.class.name + ".new(" + self.attributes.collect{|m| self.send(m).inspect }.join( ",") +")"
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end
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def attributes
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raise "abstract #{self}"
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end
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def == other
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return false unless other.class == self.class
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attributes.each do |a|
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left = send(a)
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right = other.send( a)
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return false unless left.class == right.class
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return false unless left == right
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end
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return true
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end
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end
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end
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require_relative "basic_expressions"
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require_relative "conditional_expression"
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require_relative "function_expression"
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require_relative "operator_expressions" |