Global/Local Variables highlighting

Short introduction

This feature uses custom modifiers for SemanticTokenModifiers to mark global and local variables in the semanticTokens request.

Change description

We extend the SemanticTokenModifiers by adding extra modifiers:

• globalVariable: Marks a global variable. This refers to a variable whose lifetime is the same as the program itself (program-level visibility and duration). These variables are typically declared in the declarative part of a library-level package:

  • Library-level packages.

  • Nested packages, Protected Objects or Tasks that are themselves declared at the library level. .

  The variable exists for the entire program execution and is not local to any locally declared subprogram or block.

• localVariable: Marks a local variable. This refers to a variable whose name is declared within the nearest enclosing declarative part (e.g., within a subprogram body, a block statement). Their scope and lifetime are typically restricted to that specific program element.