47 lines
1.5 KiB
Ruby
47 lines
1.5 KiB
Ruby
module Ruby
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class MethodStatement < Statement
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attr_reader :name, :args , :body
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def initialize( name , args , body)
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@name , @args , @body = name , args , body
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raise "no bod" unless @body
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end
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# At the moment normalizing means creating implicit returns for some cases
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# see replace_return for details.
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def normalized_body
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return replace_return( @body ) unless @body.is_a?(Statements)
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body = Statements.new( @body.statements.dup )
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body << replace_return( body.pop )
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end
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def to_vool
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body = normalized_body
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Vool::MethodExpression.new( @name , @args.dup , body.to_vool)
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end
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def replace_return(statement)
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case statement
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when SendStatement , YieldStatement, Variable , Constant
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return ReturnStatement.new( statement )
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when IvarAssignment
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ret = ReturnStatement.new( InstanceVariable.new(statement.name) )
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return Statements.new([statement , ret])
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when LocalAssignment
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ret = ReturnStatement.new( LocalVariable.new(statement.name) )
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return Statements.new([statement , ret])
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when ReturnStatement , IfStatement , WhileStatement ,RubyBlockStatement
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return statement
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else
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raise "Not implemented implicit return #{statement.class}"
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end
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end
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def to_s(depth = 0)
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arg_str = @args.collect{|a| a.to_s}.join(', ')
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at_depth(depth , "def #{name}(#{arg_str})" , @body.to_s(depth + 1) , "end")
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end
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end
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end
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