1 files changed, 47 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/breakpoint/astBreakpointLocation.js b/devtools/client/debugger/src/utils/breakpoint/astBreakpointLocation.js
new file mode 100644
index 0000000000..6915ef74cc
--- /dev/null
+++ b/devtools/client/debugger/src/utils/breakpoint/astBreakpointLocation.js
@@ -0,0 +1,47 @@
+/* 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/>. */
+
+// @flow
+
+import { findClosestFunction } from "../ast";
+
+import type { SourceLocation, Source, ASTLocation } from "../../types";
+import type { Symbols } from "../../reducers/ast";
+
+export function getASTLocation(
+  source: Source,
+  symbols: ?Symbols,
+  location: SourceLocation
+): ASTLocation {
+  if (source.isWasm || !symbols || symbols.loading) {
+    return { name: undefined, offset: location, index: 0 };
+  }
+
+  const scope = findClosestFunction(symbols, location);
+  if (scope) {
+    // we only record the line, but at some point we may
+    // also do column offsets
+    const line = location.line - scope.location.start.line;
+    return {
+      name: scope.name,
+      offset: { line, column: undefined },
+      index: scope.index,
+    };
+  }
+  return { name: undefined, offset: location, index: 0 };
+}
+
+export function findFunctionByName(
+  symbols: Symbols,
+  name: ?string,
+  index: number
+) {
+  if (symbols.loading) {
+    return null;
+  }
+
+  return symbols.functions.find(
+    node => node.name === name && node.index === index
+  );
+}