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module KDL
module StringDumper
class << self
def call(string)
%("#{string.each_char.map { |char| escape(char) }.join}")
end
def stringify_identifier(ident)
if bare_identifier?(ident)
ident
else
call(ident)
end
end
private
def print?(char)
' ' <= char && char <= '\x7e'
end
def escape(char)
case char
when "\n" then '\n'
when "\r" then '\r'
when "\t" then '\t'
when '\\' then '\\\\'
when '"' then '\"'
when "\b" then '\b'
when "\f" then '\f'
else char
end
end
def unicode_escape(char)
"\\u{#{char.codepoints.first.to_s(16)}}"
end
def bare_identifier?(name)
escape_chars = '\\\/(){}<>;\[\]=,"'
name =~ /^([^0-9\-+\s#{escape_chars}][^\s#{escape_chars}]*|[\-+](?!true|false|null)[^0-9\s#{escape_chars}][^\s#{escape_chars}]*)$/
end
end
end
end
|
