[Wip] Add a server analysis API to retrieve a mapping from 'dart:' URIs to 'file:' URIs.

[bleroux]

To register a proper breakpoint in SDK Code, IDEs needs to knows that a given source file is related to a dart: Uri.
The analysis server parses .yaml files and knows that a given files is mapped to a dart: URI. Exposing this with an API will avoid to find a workaround in each IDE.

Example using VSCode :

• Given this simple code : print('Dart');
• Before launching the VM, select print statement and 'go-to-definition'
• Add a breakpoint in print source code

The breakpoint is added with the file: URI that the IDE gets from the analysis server.

When launching the VM from the IDE, breakpoint will not be hit as the VM can't associate the file: URI to a dart: URI.
This can't be fixed properly at the VM level because the VM usually loads SDK librairies from snaphsot files so it can't resolve a file: URI.
To avoid duplicating .yaml parsing code or relating on hacks (guessing a file is from the SDK), it might be useful to add an API to the analysis server.

Related issues :

• Breakpoints in dart: libraries are not hit #47204
• Breakpoints in Dart SDK code are not hit Dart-Code/Dart-Code#3551

[scheglov]

We might have it already, see

sdk/pkg/analysis_server/doc/api.html

Line 2751 in e995cb5

</dd></dl></dd><dt class="request"><a name="request_execution.mapUri">execution.mapUri</a></dt><dd><div class="box"><pre>request: {

[bleroux]

@scheglov
Thank you for pointing out this Api !!! (My bad : I was to focused on the 'Analysis domain' when reading the API specification).

I tried it and it works nicely 👍

File to URI :

{"id": "4", "method": "execution.mapUri", "params": {"id": "1", "file":"/home/bruno/flutter/bin/cache/pkg/sky_engine/lib/core/core.dart"}}
{"id":"4","result":{"uri":"dart:core"}}

URI to file :

{"id": "5", "method": "execution.mapUri", "params": {"id": "1", "uri": "dart:core"}}
{"id":"5","result":{"file":"/home/bruno/flutter/bin/cache/pkg/sky_engine/lib/core/core.dart"}}