Support slashes in #Использовать

[Copilot]

#Использовать oint/api/grpc is valid BSL syntax but the lexer rejected it because USE_LETTER only allowed letters and hyphens.

• Added a USE_SEGMENT fragment in BSLLexer.g4 and restructured USE_IDENTIFIER to use a segment-based pattern (USE_SEGMENT ('/' USE_SEGMENT)*), allowing / only as a separator between non-empty segments. This prevents the lexer from greedily consuming // line comments (e.g., #Использовать lib//comment correctly tokenizes lib as the identifier).
• Added corresponding lexer and parser tests, including an edge case test for // comment handling.

#Использовать oint/api/grpc

Original prompt

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This section details on the original issue you should resolve

<issue_title>Поддержка слэшей в #Использовать</issue_title>
<issue_description>```bsl
#Использовать oint/api/grpc

Это допустимый синтаксис. </issue_description>

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Поддержка слэшей в #Использовать #364

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[Copilot]

Pull request overview

This PR updates the BSL preprocessor #Использовать directive handling so that unquoted library identifiers may include / (e.g., oint/api/grpc), aligning the lexer behavior with valid BSL syntax and adding regression tests.

Changes:

• Expanded the lexer USE_LETTER fragment in BSLLexer.g4 to include / in USE_MODE.
• Added lexer test coverage to ensure Использовать oint/api/grpc tokenizes as PREPROC_IDENTIFIER.
• Added parser match coverage to ensure #Использовать oint/api/grpc is accepted by the use rule.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
src/main/antlr/BSLLexer.g4	Allows / in unquoted #Использовать identifiers via USE_MODE rules.
src/test/java/com/github/_1c_syntax/bsl/parser/BSLLexerTest.java	Adds a lexer regression test for slash-separated identifiers in Использовать.
src/test/java/com/github/_1c_syntax/bsl/parser/BSLParserMatchesTest.java	Adds a parser match test for #Использовать with slash-separated identifiers.

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud