fix #1791: проверка обращений к свойствам и индексам

[Mr-Rm]

Вместо IsDereferenceable можно сделать аналогично _lastDereferenceIsWritable
Возможно, следует уточнить сообщение об ошибке

Summary by CodeRabbit

• Bug Fixes
  • Corrected the position of the <<?>> marker in error messages so it points to the reported one-based column.
  • Improved syntax error reporting for member and index access on values that cannot be accessed that way, with clearer messages identifying the invalid value type.
  • Parsing now continues after these invalid access errors, allowing additional issues in the same code to be reported.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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• Run ID: e7c95f65-358d-48b4-8e4f-087c6fd901d8

📥 Commits

Reviewing files that changed from the base of the PR and between bb3bcb1 and a311bff.

📒 Files selected for processing: 1

• src/OneScript.Language/SyntaxAnalysis/DefaultBslParser.cs

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📝 Walkthrough

The change updates source-column marker placement in ScriptException.Message. It also adds checks for dot and index access targets and a localized error for targets that cannot be dereferenced.

Changes: Parser Access Validation

Layer / File(s)	Summary
Validate access targets src/OneScript.Language/SyntaxAnalysis/DefaultBslParser.cs, src/OneScript.Language/SyntaxAnalysis/LocalizedErrors.cs	The parser defines which node types support dot and index access. It reports a localized value-is-not-object error when either access follows another target type.

Source Position Marker

Layer / File(s)	Summary
Place the source marker src/OneScript.Language/ScriptException.cs	ScriptException.Message inserts the marker at ColumnNumber - 1 when ColumnNumber is positive.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Merge Risk: 🔵 Low · up to a311b

Some end-of-line errors, including unterminated strings, show the source marker before the final character instead of at the reported position. Correct the insertion boundary before merging.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		The title clearly identifies the main change: validation of property and index access. It is concise and directly matches the pull request changes.

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✨ Finishing Touches: 💡 1

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[coderabbitai]

Actionable comments posted: 2

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• 🪄 Fix comments: Fix CodeRabbit comments on this PR

🤖 Prompt to fix review comments

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
Review comments at @src/OneScript.Language/ScriptException.cs:
- Line 109: Update the ColumnNumber clamp in the ScriptException code-line
rendering so a one-based position immediately after the final character remains
valid; only clamp positions beyond codeLine.Length plus one, preserving the
marker after the line’s last character.

Review comments at @src/OneScript.Language/SyntaxAnalysis/DefaultBslParser.cs:
- Line 1438: In the dot-access and index-access parsing branches, return an
error node immediately after reporting an invalid access target, before
constructing the access node; update both affected sites in
src/OneScript.Language/SyntaxAnalysis/DefaultBslParser.cs at lines 1438-1438 and
1475-1475.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: defaults
• Review profile: CHILL
• Plan: Advanced
• Run ID: f6cf30c9-db64-4c52-8fee-86ad638e9cff

📥 Commits

Reviewing files that changed from the base of the PR and between 6f12dbd and bb3bcb1.

📒 Files selected for processing: 3

• src/OneScript.Language/ScriptException.cs
• src/OneScript.Language/SyntaxAnalysis/DefaultBslParser.cs
• src/OneScript.Language/SyntaxAnalysis/LocalizedErrors.cs

Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 3 remain after this review.