Import error diagnostic is incomplete.

[zong-zhe]

Enhancement

At present, the error diagnostic output about import in KCL is as follows.

KCL:

import math as m // `mt` is written as `m` here by mistake.

two = mt.log10(100)

The diagnositc:

KCL Compile Error[E2L23] : A complie error occurs during compiling
---> File /KCLVM/test/grammar/import/builtin_import_as/main.k:3:7
3 |two = mt.log10(100)
       7 ^  -> Failure
name 'mt' is not defined

This doesn't help much for helping the user find where the typo.
Maybe we should learn rust.
It is more useful to output such diagnostic information.

KCL Compile Error[E2L23] : A complie error occurs during compiling
---> File /KCLVM/test/grammar/import/builtin_import_as/main.k:3:7
3 |two = mt.log10(100)
       7 ^  -> Failure
name 'mt' is not defined

help: consider importing one of these items
   |
0  |    import math as mt 
   |
0  |    import mt

[zong-zhe]

At this stage, if the suggestions in KCL error message need to be pointed to the specific import statements, more semantic analysis is needed.

Because only rely on an incorrect name, cannot tell whether the incorrect name is an incorrect import statement name or an incorrect schema instance name, and so on.

This part of the work relies on more detailed semantic analysis, and we plan to leave it to the LSP to help the IDE display error messages more clearly. Therefore, I will add a suggestion to the error messages on the language side to help users better understand the error messages. like #715

[i-zhen]

Good choice

[Peefy]

Closed by #731