summaryrefslogtreecommitdiff
path: root/jni/ruby/lib/irb/ext/tracer.rb
diff options
context:
space:
mode:
authorJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-16 18:49:26 +0900
committerJari Vetoniemi <jari.vetoniemi@indooratlas.com>2020-03-30 00:39:06 +0900
commitfcbf63e62c627deae76c1b8cb8c0876c536ed811 (patch)
tree64cb17de3f41a2b6fef2368028fbd00349946994 /jni/ruby/lib/irb/ext/tracer.rb
Fresh start
Diffstat (limited to 'jni/ruby/lib/irb/ext/tracer.rb')
-rw-r--r--jni/ruby/lib/irb/ext/tracer.rb71
1 files changed, 71 insertions, 0 deletions
diff --git a/jni/ruby/lib/irb/ext/tracer.rb b/jni/ruby/lib/irb/ext/tracer.rb
new file mode 100644
index 0000000..691215a
--- /dev/null
+++ b/jni/ruby/lib/irb/ext/tracer.rb
@@ -0,0 +1,71 @@
+#
+# irb/lib/tracer.rb -
+# $Release Version: 0.9.6$
+# $Revision: 47112 $
+# by Keiju ISHITSUKA(keiju@ruby-lang.org)
+#
+# --
+#
+#
+#
+require "tracer"
+
+module IRB
+
+ # initialize tracing function
+ def IRB.initialize_tracer
+ Tracer.verbose = false
+ Tracer.add_filter {
+ |event, file, line, id, binding, *rests|
+ /^#{Regexp.quote(@CONF[:IRB_LIB_PATH])}/ !~ file and
+ File::basename(file) != "irb.rb"
+ }
+ end
+
+ class Context
+ # Whether Tracer is used when evaluating statements in this context.
+ #
+ # See +lib/tracer.rb+ for more information.
+ attr_reader :use_tracer
+ alias use_tracer? use_tracer
+
+ # Sets whether or not to use the Tracer library when evaluating statements
+ # in this context.
+ #
+ # See +lib/tracer.rb+ for more information.
+ def use_tracer=(opt)
+ if opt
+ Tracer.set_get_line_procs(@irb_path) {
+ |line_no, *rests|
+ @io.line(line_no)
+ }
+ elsif !opt && @use_tracer
+ Tracer.off
+ end
+ @use_tracer=opt
+ end
+ end
+
+ class WorkSpace
+ alias __evaluate__ evaluate
+ # Evaluate the context of this workspace and use the Tracer library to
+ # output the exact lines of code are being executed in chronological order.
+ #
+ # See +lib/tracer.rb+ for more information.
+ def evaluate(context, statements, file = nil, line = nil)
+ if context.use_tracer? && file != nil && line != nil
+ Tracer.on
+ begin
+ __evaluate__(context, statements, file, line)
+ ensure
+ Tracer.off
+ end
+ else
+ __evaluate__(context, statements, file || __FILE__, line || __LINE__)
+ end
+ end
+ end
+
+ IRB.initialize_tracer
+end
+