33 lines
1015 B
Ruby
33 lines
1015 B
Ruby
module Ruby
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# Base class for all statements in the tree. Derived classes correspond to known language
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# constructs
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#
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# Compilers or compiler passes are written by implementing methods.
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#
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class Statement
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# Many statements exist in the vool layer in quite a similar arrangement
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# Especially for different types of assignment we can abstract the creation
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# of the vool, by using the right class to instantiate, the "vool_brother"
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# Ie same class_name, but in the Vool module
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def vool_brother
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eval "Vool::#{class_name}"
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end
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# return the class name without the module
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# used to evaluate the vool_brother
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def class_name
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self.class.name.split("::").last
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end
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# helper method for formatting source code
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# depth is the depth in the tree (os the ast)
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# and the string are the ones to be indented (2 spaces)
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def at_depth(depth , *strings)
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prefix = " " * 2 * depth
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strings.collect{|str| prefix + str}.join("\n")
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end
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end
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end
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