Bug 1555518 - Fixes original stack display for wasm files, and ref to original source. r=jlast

- Fixes expandFrames() to ensure the thread property is set
- Refactors getSourceLocationFromMouseEvent to use fromEditorLine
- Replaces dwarf_to_json (for proper DWARF conversion)

Differential Revision: https://phabricator.services.mozilla.com/D33092

--HG--
extra : moz-landing-system : lando

devtools/client/debugger/packages/devtools-source-map/src/tests/wasm-source-map.js

@@ -68,7 +68,7 @@ describe("wasm source maps", () => {
     expect(pos3).toHaveLength(1);
     expect(pos3[0].line).toEqual(14);
     expect(pos3[0].column).toEqual(0);
-    expect(pos3[0].lastColumn).toEqual(Infinity);
+    expect(pos3[0].lastColumn).toEqual(0);
   });
 
   test("content presents", async () => {

devtools/client/debugger/packages/devtools-source-map/src/utils/wasmRemap.js

@@ -56,7 +56,7 @@ class WasmRemap {
       column: 0,
     };
     if (this._computeColumnSpans) {
-      generatedPosition.lastColumn = Infinity;
+      generatedPosition.lastColumn = 0;
     }
     return generatedPosition;
   }
@@ -95,6 +95,7 @@ class WasmRemap {
           source,
           generatedLine: generatedColumn,
           generatedColumn: 0,
+          lastGeneratedColumn: 0,
           originalLine,
           originalColumn,
           name,

devtools/client/debugger/src/actions/pause/mapFrames.js

@@ -136,7 +136,7 @@ async function expandFrames(
     };
 
     originalFrames.forEach((originalFrame, j) => {
-      if (!originalFrame.location || !originalFrame.thread) {
+      if (!originalFrame.location) {
         return;
       }
 
@@ -145,10 +145,10 @@ async function expandFrames(
       const id = j == 0 ? frame.id : `${frame.id}-originalFrame${j}`;
       result.push({
         id,
-        thread: originalFrame.thread,
         displayName: originalFrame.displayName,
         location: originalFrame.location,
         source: null,
+        thread: frame.thread,
         scope: frame.scope,
         this: frame.this,
         isOriginal: true,

devtools/client/debugger/src/utils/editor/index.js

@@ -224,11 +224,12 @@ export function getSourceLocationFromMouseEvent(
     left: e.clientX,
     top: e.clientY,
   });
+  const sourceId = source.id;
 
   return {
-    sourceId: source.id,
-    line: line + 1,
-    column: ch + 1,
+    sourceId,
+    line: fromEditorLine(sourceId, line),
+    column: isWasm(sourceId) ? 0 : ch + 1,
   };
 }