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[#1748] Fix mangled module names on hovering

Motivation and Context

Problem

If we hover over the imported module then we'll see something like Mangled_module__bla__bla__Module____mligo. It's kinda confusing. We need to show there something more proper.

Solution

Run a dependency_graph function on a given file, extract (filename * module_name) list from its result, pass it into scopes and substitute the file name instead of the mangled name if needed.

Related issues

Resolves #1748 (closed) .

Checklist for the LIGO Language Server

  • I checked whether I need to update the README.md file for the plugin and did so if necessary:
    • If I implemented a new LSP request, I added it to the list of supported features that may be disabled
    • If I implemented a new LSP method, I added it to the list of supported functionality
  • I checked that my changes work in Emacs, Vim, and Visual Studio Code
  • (Before merging) The commit history is squashed and prettified, and follows the Serokell commit policy, or the MR is set to squash the commits

Description

Component

  • compiler
  • website
  • webide
  • vscode-plugin
  • debugger

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to not work as expected)
  • Performance improvement (non-breaking change that improves performance)
  • None (change with no changelog)

Changelog

Fixed mangled module names on imports hovering. Now you can see the correct file paths like:

module K = "../A.mligo"

Checklist:

  • Changes follow the existing coding style (use dune @fmt to check).
  • Tests for the changes have been added (for bug fixes / feature).
  • Documentation has been updated.
  • Changelog description has been added (if appropriate).
  • Start titles under ## Changelog section with #### (if appropriate).
  • There is no image or uploaded file in changelog
  • Examples in changed behaviour have been added to the changelog (for breaking change / feature).

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