1 files changed, 86 insertions, 0 deletions
diff --git a/devtools/client/shared/thread-utils.js b/devtools/client/shared/thread-utils.js
new file mode 100644
index 0000000000..50228195f4
--- /dev/null
+++ b/devtools/client/shared/thread-utils.js
@@ -0,0 +1,86 @@
+/* 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/. */
+"use strict";
+
+const asyncStoreHelper = require("resource://devtools/client/shared/async-store-helper.js");
+const { validateBreakpointLocation } = ChromeUtils.import(
+  "resource://devtools/shared/validate-breakpoint.jsm"
+);
+
+const asyncStore = asyncStoreHelper("debugger", {
+  pendingBreakpoints: ["pending-breakpoints", {}],
+  tabs: ["tabs", []],
+  xhrBreakpoints: ["xhr-breakpoints", []],
+  eventListenerBreakpoints: ["event-listener-breakpoints", undefined],
+  blackboxedRanges: ["blackboxedRanges", {}],
+});
+exports.asyncStore = asyncStore;
+
+exports.getThreadOptions = async function () {
+  return {
+    pauseOnExceptions: Services.prefs.getBoolPref(
+      "devtools.debugger.pause-on-exceptions"
+    ),
+    ignoreCaughtExceptions: Services.prefs.getBoolPref(
+      "devtools.debugger.ignore-caught-exceptions"
+    ),
+    shouldIncludeSavedFrames: Services.prefs.getBoolPref(
+      "devtools.debugger.features.async-captured-stacks"
+    ),
+    shouldIncludeAsyncLiveFrames: Services.prefs.getBoolPref(
+      "devtools.debugger.features.async-live-stacks"
+    ),
+    skipBreakpoints: Services.prefs.getBoolPref(
+      "devtools.debugger.skip-pausing"
+    ),
+    logEventBreakpoints: Services.prefs.getBoolPref(
+      "devtools.debugger.log-event-breakpoints"
+    ),
+    // This option is always true. See Bug 1654590 for removal.
+    observeAsmJS: true,
+    breakpoints: sanitizeBreakpoints(await asyncStore.pendingBreakpoints),
+    // XXX: `event-listener-breakpoints` is a copy of the event-listeners state
+    // of the debugger panel. The `active` property is therefore linked to
+    // the `active` property of the state.
+    // See devtools/client/debugger/src/reducers/event-listeners.js
+    eventBreakpoints:
+      ((await asyncStore.eventListenerBreakpoints) || {}).active || [],
+  };
+};
+
+/**
+ * Bug 1720512 - We used to store invalid breakpoints, leading to blank debugger.
+ * Filter out only the one that look invalid.
+ */
+function sanitizeBreakpoints(breakpoints) {
+  if (typeof breakpoints != "object") {
+    return {};
+  }
+  // We are not doing any assertion against keys,
+  // as it looks like we are never using them anywhere in frontend, nor backend.
+  const validBreakpoints = {};
+  for (const key in breakpoints) {
+    const bp = breakpoints[key];
+    try {
+      if (!bp) {
+        throw new Error("Undefined breakpoint");
+      }
+      // Debugger's main.js's `syncBreakpoints` will only use generatedLocation
+      // when restoring breakpoints.
+      validateBreakpointLocation(bp.generatedLocation);
+      // But Toolbox will still pass location to thread actor's reconfigure
+      // for target that don't support watcher+BreakpointListActor
+      validateBreakpointLocation(bp.location);
+      validBreakpoints[key] = bp;
+    } catch (e) {
+      console.error(
+        "Ignore invalid breakpoint from debugger store",
+        bp,
+        e.message
+      );
+    }
+  }
+  return validBreakpoints;
+}
+exports.sanitizeBreakpoints = sanitizeBreakpoints;