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-rw-r--r--layout/generic/frame-graph.py41
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diff --git a/layout/generic/frame-graph.py b/layout/generic/frame-graph.py
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+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+"""
+Take the *.framedata files from graph-frameclasses.js and combine them
+into a single graphviz file.
+
+stdin: a list of .framedata file names (e.g. from xargs)
+stdout: a graphviz file
+
+e.g. `find <objdir> -name "*.framedata" | python aggregate-frameclasses.py |
+ dot -Tpng -o frameclasses-graph.png -`
+"""
+
+import sys
+
+classdict = {}
+
+for line in sys.stdin:
+ file = line.strip()
+ fd = open(file)
+
+ output = None
+ for line in fd:
+ if line.startswith("CLASS-DEF: "):
+ cname = line[11:-1]
+ if cname not in classdict:
+ output = classdict[cname] = []
+ else:
+ output = None
+ elif output is not None:
+ output.append(line)
+
+sys.stdout.write("digraph g {\n")
+
+for olist in classdict.itervalues():
+ for line in olist:
+ sys.stdout.write(line)
+
+sys.stdout.write("}\n")