1 files changed, 28 insertions, 0 deletions
diff --git a/dist/s_label_loop.py b/dist/s_label_loop.py
new file mode 100644
index 00000000000..5cc222a4250
--- /dev/null
+++ b/dist/s_label_loop.py
@@ -0,0 +1,28 @@
+# Mark outer loop boundaries with {@ and }@ .  Nested loops are not marked.
+# Each input line is the content of a C function.
+import re, sys
+
+p = re.compile('((for |while |_FOREACH|FOREACH_BEGIN)\([^{)]*\)|do) {')
+for line in sys.stdin:
+    matched = 0
+    m = p.search(line)
+    while m != None:
+        matched = 1
+        pos = m.end()
+        out = line[:pos] + "@"
+        level = 1
+        length = len(line)
+        while level > 0 and pos < length:
+            c = line[pos:pos+1]
+            pos += 1
+            out += c
+            if c == "}":
+                level -= 1
+            elif c == "{":
+                level += 1
+        out += "@"
+        sys.stdout.write(out)
+        line = line[pos:]
+        m = p.search(line)
+    if matched != 0:
+        sys.stdout.write(line)