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-rw-r--r--sample/eval.rb42
1 files changed, 42 insertions, 0 deletions
diff --git a/sample/eval.rb b/sample/eval.rb
new file mode 100644
index 0000000000..216bf8ca39
--- /dev/null
+++ b/sample/eval.rb
@@ -0,0 +1,42 @@
+line = ''
+indent=0
+$stdout.sync = TRUE
+print "ruby> "
+while TRUE
+ l = gets
+ unless l
+ break if line == ''
+ else
+ line = line + l
+ if l =~ /,\s*$/
+ print "ruby| "
+ next
+ end
+ if l =~ /^\s*(class|module|def|if|case|while|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
+ $! = 'exception raised' unless $!
+ print "ERR: ", $!, "\n"
+ end
+ break if not l
+ line = ''
+ print "ruby> "
+end
+print "\n"