1 files changed, 63 insertions, 0 deletions
diff --git a/src/third_party/mozjs-60/extract/js/src/devtools/rootAnalysis/t/sixgill.py b/src/third_party/mozjs-60/extract/js/src/devtools/rootAnalysis/t/sixgill.py
new file mode 100644
index 00000000000..2bdf76a49b4
--- /dev/null
+++ b/src/third_party/mozjs-60/extract/js/src/devtools/rootAnalysis/t/sixgill.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+# 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/.
+
+from collections import defaultdict
+
+# Simplified version of the body info.
+class Body(dict):
+    def __init__(self, body):
+        self['BlockIdKind'] = body['BlockId']['Kind']
+        if 'Variable' in body['BlockId']:
+            self['BlockName'] = body['BlockId']['Variable']['Name'][0].split("$")[-1]
+        loc = body['Location']
+        self['LineRange'] = (loc[0]['Line'], loc[1]['Line'])
+        self['Filename'] = loc[0]['CacheString']
+        self['Edges'] = body.get('PEdge', [])
+        self['Points'] = { i: p['Location']['Line'] for i, p in enumerate(body['PPoint'], 1) }
+        self['Index'] = body['Index']
+        self['Variables'] = { x['Variable']['Name'][0].split("$")[-1]: x['Type'] for x in body['DefineVariable'] }
+
+        # Indexes
+        self['Line2Points'] = defaultdict(list)
+        for point, line in self['Points'].items():
+            self['Line2Points'][line].append(point)
+        self['SrcPoint2Edges'] = defaultdict(list)
+        for edge in self['Edges']:
+            src, dst = edge['Index']
+            self['SrcPoint2Edges'][src].append(edge)
+        self['Line2Edges'] = defaultdict(list)
+        for (src, edges) in self['SrcPoint2Edges'].items():
+            line = self['Points'][src]
+            self['Line2Edges'][line].extend(edges)
+
+    def edges_from_line(self, line):
+        return self['Line2Edges'][line]
+
+    def edge_from_line(self, line):
+        edges = self.edges_from_line(line)
+        assert(len(edges) == 1)
+        return edges[0]
+
+    def edges_from_point(self, point):
+        return self['SrcPoint2Edges'][point]
+
+    def edge_from_point(self, point):
+        edges = self.edges_from_point(point)
+        assert(len(edges) == 1)
+        return edges[0]
+
+    def assignment_point(self, varname):
+        for edge in self['Edges']:
+            if edge['Kind'] != 'Assign':
+                continue
+            dst = edge['Exp'][0]
+            if dst['Kind'] != 'Var':
+                continue
+            if dst['Variable']['Name'][0] == varname:
+                return edge['Index'][0]
+        raise Exception("assignment to variable %s not found" % varname)
+
+    def assignment_line(self, varname):
+        return self['Points'][self.assignment_point(varname)]