Add editor support for setting breakpoints using file suffix

[sgjesse]

The VM change done when resolving issue #21067 needs to be supported by the Dart Editor.

Maybe the Dart Editor can just always use relative paths starting at the project root to get the exact same behavior as before.

[clayberg]

cc @scheglov.
Set owner to @devoncarew.
Removed Type-Defect, Priority-Unassigned labels.
Added Type-Enhancement, Priority-Medium labels.

[sethladd]

Set owner to @scheglov.

[scheglov]

AFAIK Devon done it it https://codereview.chromium.org//669613006

---

Set owner to @devoncarew.

[sgjesse]

Setting breakpoints using a prefix works, but matching the stack at a breakpoint set with prefix with the actual code does not work.

Below is a trace of the communication between the debugger and the debugee inside a Docker container, where the Dart code in running off /app/bin/server.dart.

The change in https://codereview.chromium.org//669613006 does add the suffix support for setting breakpoints. I am now able to set a breakpoint when running in a Docker container ad described in issue #21067. This is command 6 in the trace below:

{"id":6,"command":"setBreakpoint","params":{"isolateId":703850198,"line":20,"url":"bin/server.dart"}}{ "id": 6, "result": { "breakpointId": 1 }}

However when the breakpoint is hit the editor says:

Source not available for <anonomous closure>().

I think this is due to the stack-trace from the VM having absolute URIs which are not matched by the editor. I think this is caused bu the handling of one or more of these commands in the trace below:

Command 7 is resume, and the result is a break in file:///app/bin/server.dart.

Command 8 is getting the stack, where the top frame is reported in file:///app/bin/server.dart

Command 9 is asking for script source for file:/app/bin/server.dart

Besides the top frame I can see the code for the other frames, but they are all in dart: libraries, e.g. dart:async/zone.dart.

{"id":7,"command":"resume","params":{"isolateId":703850198}}{ "id": 7 }{ "event": "breakpointResolved", "params": {"breakpointId": 1, "isolateId":703850198, "location":{"url":"file:///app/bin/server.dart","libraryId":13,"tokenOffset":163}}}{ "event": "paused", "params": { "reason": "breakpoint", "isolateId": 703850198,"breakpointId": 1,"location": { "url":"file:///app/bin/server.dart","libraryId":13,"tokenOffset":163}}}

{"id":8,"command":"getStackTrace","params":{"isolateId":703850198}}{ "id": 8, "result": {"callFrames" : [ {"functionName":"<anonymous closure>","location": { "url":"file:///app/bin/server.dart","libraryId":13,"tokenOffset":163},"locals":[{"name":"webFiles","value":{"objectId":0,"kind":"object","classId":1340,"text":"object of type VirtualDirectory"}},{"name":"request","value":{"objectId":1,"kind":"object","classId":1033,"text":"object of type _HttpRequest"}}]},{"functionName":"_rootRunUnary@687914314","location": { "url":"dart:async/zone.dart","libraryId":7,"tokenOffset":6511},"locals":[{"name":"self","value":{"objectId":2,"kind":"object","classId":467,"text":"object of type _RootZone"}},{"name":"parent","value":{"objectId":3,"kind":"object","text":"null"}},{"name":"zone","value":{"objectId":4,"kind":"object","classId":465,"text":"object of type _CustomZone"}},{"name":"f","value":{"objectId":5,"kind":"function","name":"main.<anonymous closure>.<anonymous closure>.<anonymous closure>","signature":"(dynamic) => dynamic","location": { "url":"file:///app/bin/server.dart","libraryId":13,"tokenOffset":64}}},{"name":"arg","value":{"objectId":1,"kind":"object","classId":1033,"text":"object of type _HttpRequest"}}]},
...

{"id":9,"command":"getScriptSource","params":{"libraryId":13,"isolateId":703850198,"url":"file:/app/bin/server.dart"}}{"id": 9, "error": "Error: Dart_ScriptGetSource: script 'file:/app/bin/server.dart' not found in library 'file:///app/bin/server.dart'"}

Here is the full trace of the communication between the debugger and the debugee:

{ "event": "isolate", "params": { "reason": "created", "id": 814077656 }}{"id":1,"command":"getLibraries","params":{"isolateId":814077656}}{ "event": "isolate", "params": { "reason": "created", "id": 703850198 }}{"id":2,"command":"getLibraries","params":{"isolateId":703850198}}{ "event": "paused", "params": { "reason": "breakpoint", "isolateId": 703850198,"location": { "url":"file:///app/bin/server.dart","libraryId":13,"tokenOffset":27}}}{ "id": 2, "result": { "libraries": [{"id":0,"url":"dart:core"}, {"id":1,"url":"dart:isolate"}, {"id":2,"url":"dart:mirrors"}, {"id":3,"url":"dart:collection"}, {"id":4,"url":"dart:profiler"}, {"id":5,"url":"dart:nativewrappers"}, {"id":6,"url":"dart:typed_data"}, {"id":7,"url":"dart:async"}, {"id":8,"url":"dart:convert"}, {"id":9,"url":"dart:_internal"}, {"id":10,"url":"dart:math"}, {"id":11,"url":"dart:_builtin"}, {"id":12,"url":"dart:io"}, {"id":13,"url":"file:///app/bin/server.dart"}, {"id":14,"url":"package:http_server/http_server.dart"}, {"id":15,"url":"package:mime/mime.dart"}, {"id":16,"url":"package:path/path.dart"}, {"id":17,"url":"package:mime/src/mime_multipart_transformer.dart"}, {"id":18,"url":"package:mime/src/mime_shared.dart"}, {"id":19,"url":"package:mime/src/mime_type.dart"}, {"id":20,"url":"package:path/src/context.dart"}, {"id":21,"url":"package:path/src/style.dart"}, {"id":22,"url":"package:path/src/path_exception.dart"}, {"id":23,"url":"package:mime/src/bound_multipart_stream.dart"}, {"id":24,"url":"package:mime/src/char_code.dart"}, {"id":25,"url":"package:mime/src/default_extension_map.dart"}, {"id":26,"url":"package:mime/src/magic_number.dart"}, {"id":27,"url":"package:path/src/internal_style.dart"}, {"id":28,"url":"package:path/src/parsed_path.dart"}, {"id":29,"url":"package:path/src/style/posix.dart"}, {"id":30,"url":"package:path/src/style/url.dart"}, {"id":31,"url":"package:path/src/style/windows.dart"}, {"id":32,"url":"package:path/src/characters.dart"}, {"id":33,"url":"package:path/src/utils.dart"}]}}{"id":3,"command":"getLineNumberTable","params":{"libraryId":13,"isolateId":703850198,"url":"file:///app/bin/server.dart"}}{"id":4,"command":"setPauseOnException","params":{"exceptions":"unhandled","isolateId":703850198}}{ "id": 3, "result": { "lines": [[4,3,1,4,8,5,20], [5,7,1,8,8,9,17], [7,12,1,13,8,14,46], [9,17,1,18,6,19,10,20,11,21,13], [10,23,3,24,7,25,16,26,18,27,22,28,38,29,39,30,44,31,45], [12,34,3,35,11,36,12,37,13,38,15], [13,40,5,41,15,42,16,43,20,44,21,45,30,46,32,47,36,48,37,49,38,51,42,52,43,53,44,55,50,56,52], [14,58,7,60,13,61,14,63,20,64,21,65,22,67,29,68,31], [15,70,11,71,14,72,15,74,22,75,23,77,26,78,27,80,32,81,35,83,38,84,40], [16,86,13,88,20,89,21,91,29,92,30,94,38,95,39,97,46,98,47,100,50,101,51,103,58,104,59,106,72,107,73,108,74], [17,110,11,111,13,112,18,113,21,114,22,116,29,117,30,119,33,120,34,122,39,123,42,125,52,126,54], [18,128,13,130,20,131,21,133,29,134,30,136,37,137,39,139,51,140,53,142,64,143,65,145,69], [19,147,13,149,20,150,21], [20,153,17,154,19,156,26,157,27,159,42,160,44,162,52,163,53,165,60,166,61,168,62], [21,170,17,171,19,173,26,174,27,176,45,177,47,179,55,180,56,182,66,183,67,185,68], [22,187,17,188,19,190,26,191,27], [23,194,27,196,28,197,30,199,38,200,39,202,58,203,59,205,60], [24,207,17,208,19,210,24,211,25,212,26], [25,214,11,215,13,216,18], [26,218,13,219,21,220,22,222,34,223,35,225,42,226,43], [27,228,11], [28,230,7,231,8,232,9], [29,234,5,235,6,236,7], [30,238,3,239,4], [31,241,3,243,10,244,12,245,13,247,14,248,16,250,26,251,28], [32,253,5,255,10,256,11,258,37,260,39,262,41,264,52,266,53,267,54], [33,269,3,270,4,271,5], [34,273,1]]}}{ "id": 4 }{"id":5,"command":"getStackTrace","params":{"isolateId":703850198}}{ "id": 5, "result": {"callFrames" : [ {"functionName":"main","location": { 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"url":"dart:isolate-patch/isolate_patch.dart","libraryId":1,"tokenOffset":649},"classId":54,"locals":[{"name":"handler","value":{"objectId":18,"kind":"function","name":"_handleTimeout","signature":"(dynamic) => void","location": { "url":"dart:io/timer_impl.dart","libraryId":12,"tokenOffset":1692}}},{"name":"message","value":{"objectId":3,"kind":"object","text":"null"}}]}]}}{"id":9,"command":"getScriptSource","params":{"libraryId":13,"isolateId":703850198,"url":"file:/app/bin/server.dart"}}{"id": 9, "error": "Error: Dart_ScriptGetSource: script 'file:/app/bin/server.dart' not found in library 'file:///app/bin/server.dart'"}{"id":10,"command":"getObjectProperties","params":{"objectId":0,"isolateId":703850198}}{"id":10, "result":{"classId": 1340,"kind":"object","fields":[{"name":"root","value":{"objectId":19,"kind":"string","text":""web""}},{"name":"allowDirectoryListing","value":{"objectId":8,"kind":"boolean","text":"false"}},{"name":"followLinks","value":{"objectId":20,"kind":"boolean","text":"true"}},{"name":"jailRoot","value":{"objectId":20,"kind":"boolean","text":"true"}},{"name":"_pathPrefixSegments@1026937714","value":{"objectId":21,"kind":"list","length":0,"text":"[]"}},{"name":"_invalidPathRegExp@1026937714","value":{"objectId":22,"kind":"object","classId":57,"text":"object of type _JSSyntaxRegExp"}},{"name":"_errorCallback@1026937714","value":{"objectId":3,"kind":"object","text":"null"}},{"name":"_dirCallback@1026937714","value":{"objectId":3,"kind":"object","text":"null"}}]}}{"id":11,"command":"getObjectProperties","params":{"objectId":1,"isolateId":703850198}}{"id":11, "result":{"classId": 1033,"kind":"object","fields":[{"name":"response","value":{"objectId":23,"kind":"object","classId":1036,"text":"object of 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"result":{"name":"_HttpRequest@497094340","superclassId":1032,"libraryId":12,"fields":[]}}{"id":14,"command":"resume","params":{"isolateId":703850198}}{ "id": 14 }

---

cc @mhausner.
Removed Type-Enhancement, Priority-Medium labels.
Added Type-Defect, Priority-High labels.

[devoncarew]

In progress here: https://codereview.chromium.org/753183003/, but needs some additional testing.

[devoncarew]

This has landed.

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Added Fixed label.

[clayberg]

Added this to the 1.8 milestone.