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ruby--ruby/sample/eval.rb
matz a8c748d277 * sample: replace TRUE, FALSE with true, false respectively.
a patch from Kazuhiro NISHIYAMA <zn at mbf.nifty.com>.
  [ruby-dev:30713]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12184 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2007-04-16 13:53:09 +00:00

41 lines
719 B
Ruby

line = ''
indent = 0
$stdout.sync = true
print "ruby> "
loop do
l = gets
if l.nil?
break if line.empty?
else
line += l
if l =~ /,\s*$/
print "ruby| "
next
end
if l =~ /^\s*(class|module|def|if|unless|case|while|until|for|begin)\b[^_]/
indent += 1
end
if l =~ /^\s*end\b[^_]/
indent -= 1
end
if l =~ /\{\s*(\|.*\|)?\s*$/
indent += 1
end
if l =~ /^\s*\}/
indent -= 1
end
if indent > 0
print "ruby| "
next
end
end
begin
print eval(line).inspect, "\n"
rescue ScriptError, StandardError
printf "ERR: %s\n", $! || 'exception raised'
end
break if l.nil?
line = ''
print "ruby> "
end
print "\n"