Rewrite code case

[rainmantsr]

I am using jruby-parser to rewrite code, but with some code is has some problems:
This:
require 'jruby-parser'

root = JRubyParser.parse( %q{
def log(severity)
case severity
when Severity::DEBUG
@logging_services.debug(msg.to_s)
when Severity::INFO
@logging_services.info(msg.to_s)
when Severity::WARNING
@logging_services.warn(msg.to_s)
else
@logging_services.error(msg.to_s)
end
end
} )

root.to_source

produces:
def log severity
case severity[
when Severity
@logging_services.debug(msg.to_s)
when Severity
@logging_services.info(msg.to_s)
when Severity
@logging_services.warn(msg.to_s)
else
@logging_services.error(msg.to_s),
when Severity
@logging_services.info(msg.to_s)
when Severity
@logging_services.warn(msg.to_s)
else
@logging_services.error(msg.to_s),
when Severity
@logging_services.warn(msg.to_s)
else
@logging_services.error(msg.to_s)]
end
end

Can I do something to avoid this behaviour?

[enebo]

rewriter definitely is broken in this case. It looks like two bugs in fact. All whens get the same 'else' added and also each case is only calling the first part of the constant (also referred to as Colon2 in this case).

[chirejaszy]

src/org/jrubyparser/ast/RootNode.java

[chirejaszy]

require 'jruby-parser'

root = JRubyParser.parse("b = foo(1)")
fcall = root.find_node(:fcall)
fcall.name = 'bar'
fcall.args[0] = true

Write out the new source

root.to_source # b = bar(true)