Sarmkadan/roslyn-guard-analyzer
GitHub: Sarmkadan/roslyn-guard-analyzer
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# Roslyn Guard Analyzer
**A production-grade architectural code analyzer powered by Roslyn for .NET projects**
Enforce architectural rules, naming conventions, async patterns, and null safety across your entire codebase with a flexible, extensible analysis engine. Built for teams that take code quality seriously.
## Table of Contents
- [Overview](#overview)
- [Features](#features)
- [Quick Start](#quick-start)
- [Installation](#installation)
- [Usage Examples](#usage-examples)
- [Architecture](#architecture)
- [API Reference](#api-reference)
- [Configuration Reference](#configuration-reference)
- [CLI Reference](#cli-reference)
- [Troubleshooting](#troubleshooting)
- [Testing](#testing)
- [Performance](#performance)
- [Documentation](#documentation)
- [Related Projects](#related-projects)
- [Contributing](#contributing)
## Overview
Roslyn Guard Analyzer is a comprehensive static analysis tool that enforces architectural patterns and best practices in .NET codebases. Built on the Microsoft Roslyn compiler platform, it provides deep syntactic and semantic analysis capabilities to identify violations before they reach production.
### Why Roslyn Guard Analyzer?
- **Architectural Enforcement**: Define and enforce layer dependencies, preventing circular dependencies and architectural violations
- **Naming Convention Validation**: Enforce consistent naming patterns across your codebase automatically
- **Async Pattern Detection**: Identify improper async/await patterns, blocking calls, and Task handling issues
- **Null Safety Validation**: Enforce nullable reference type patterns and null-safety best practices
- **Team Scalability**: Run analysis as part of CI/CD pipelines to maintain standards across distributed teams
- **Zero Configuration**: Works out of the box with sensible defaults
- **Fully Customizable**: Define custom rules tailored to your architectural needs
- **Multiple Output Formats**: Generate reports in Text, JSON, CSV, XML, and HTML formats
### Perfect For
- Large teams maintaining shared architectural standards
- Microservices architectures requiring strict layer separation
- Projects adopting async-first patterns
- Teams implementing nullable reference types
- CI/CD integration for code quality gates
## Features
### Core Analysis Capabilities
| Feature | Description |
|---------|-------------|
| **Layer Dependency Analysis** | Enforces architectural layers and prevents illegal cross-layer dependencies |
| **Naming Convention Enforcement** | Validates naming conventions for classes, methods, properties, and fields |
| **Async Pattern Detection** | Identifies improper async/await patterns and blocking calls in async contexts |
| **Null Safety Validation** | Enforces nullable reference type handling and null-safety patterns |
| **Project Analysis** | Analyze entire projects with automatic file discovery and parallel processing |
| **Multi-Format Reporting** | Generate reports in Text, JSON, CSV, XML, and HTML formats |
| **Rule Registry** | Extensible rule system for defining custom architectural rules |
| **Configuration Management** | Flexible configuration system with rule customization |
| **Performance Metrics** | Built-in performance profiling and analysis statistics |
| **Event-Driven Architecture** | Publish/subscribe system for extensibility and monitoring |
### Built-In Rules
The analyzer ships with four foundational rules covering the most common architectural concerns:
| Rule ID | Category | Description |
|---------|----------|-------------|
| `LYR001` | Layer Dependencies | Prevents repositories from depending on services or controllers |
| `NAM001` | Naming Conventions | Enforces PascalCase for classes/methods, snake_case for fields |
| `ASY001` | Async Patterns | Validates async/await patterns and proper Task handling |
| `NUL001` | Null Safety | Checks nullable reference type handling and null-coalescing patterns |
## Advanced Features
### Custom Rule Builder DSL
Define predicate-based rules with a fluent API and register them just like built-in rules:
var rule = CustomRuleBuilder.Create("CUS001", "Async suffix rule")
.For(RuleCategory.AsyncPattern)
.WithSeverity(SeverityLevel.Warning)
.WithDescription("Requires async methods to end with Async")
.When(element => element.ElementType == CodeElementType.Method && element.IsAsync && !element.Name.EndsWith("Async"))
.WithMessage(element => $"Method '{element.Name}' must end with Async")
.Build();
ruleRegistry.RegisterRule(rule);
var violations = await ruleEngine.ExecuteRuleAsync(rule, elements);
### Suppression Manager
Persist rule suppressions and filter out known exceptions with justification and optional expiration:
var suppression = new SuppressionRecord
{
RuleId = "LYR001",
TargetFile = "src/Legacy/LegacyRepository.cs",
Justification = "Legacy dependency scheduled for refactor",
Author = "team-maintainer",
CreatedAt = DateTime.UtcNow,
ExpiresAt = DateTime.UtcNow.AddDays(30),
IsActive = true
};
suppressionManager.AddSuppression(suppression);
await suppressionManager.SaveAsync("suppressions.json");
await suppressionManager.LoadAsync("suppressions.json");
var visibleViolations = suppressionManager.FilterSuppressed(violations);
### Fix-All Provider
Preview or apply bulk fixes with severity and rule filters:
var result = await fixAllProvider.ApplyAllAsync(
violations,
new FixAllOptions
{
DryRun = false,
MinimumSeverity = SeverityLevel.Warning,
RuleIds = new[] { "RG-N001", "RG-A001" },
SkipBreakingChanges = true,
MaxFixes = 25
});
### Diagnostic Codes Examples
#### LYR001: Layer Dependencies
**Non-compliant:**
public class UserRepository
{
private readonly UserService _service; // RGD001: Repository depends on service
}
**Compliant:**
public class UserService
{
private readonly UserRepository _repository; // OK
}
#### NAM001: Naming Conventions
**Non-compliant:**
public class my_class
{
private int PublicField;
}
**Compliant:**
public class MyClass
{
private int _publicField;
}
#### ASY001: Async Patterns (RGD003, RGD004)
**Non-compliant:**
public Task DoWork() // Returns Task but not marked async
{
return Task.FromResult(0);
}
public async Task DoWork2() // Missing Async suffix
{
}
**Compliant:**
public async Task DoWorkAsync()
{
}
#### NUL001: Null Safety (RGD008, RGD009)
**Non-compliant:**
public class MyClass
{
public string Name { get; set; } // Non-nullable without initialization
}
**Compliant:**
public class MyClass
{
public string Name { get; set; } = string.Empty; // Initialized
}
## Quick Start
### Prerequisites
- **.NET 10.0** or higher
- **C# language support** (latest language features)
- Visual Studio Code, Visual Studio, or any .NET IDE
### One-Command Installation
# Clone and build
git clone https://github.com/sarmkadan/roslyn-guard-analyzer.git
cd roslyn-guard-analyzer
dotnet build -c Release
# Run analysis on a project
dotnet run --project src/RoslynGuardAnalyzer -- /path/to/your/project.csproj
### 30-Second Example
# Analyze your current project
cd ~/MyProject
roslyn-guard-analyzer .
# View results in JSON
roslyn-guard-analyzer . --format json
# Export to file
roslyn-guard-analyzer . --output analysis-report.json
## Installation
### Method 1: Clone and Build from Source
git clone https://github.com/sarmkadan/roslyn-guard-analyzer.git
cd roslyn-guard-analyzer
dotnet build -c Release
# Create a convenient alias
alias roslyn-guard='dotnet /path/to/roslyn-guard-analyzer/src/RoslynGuardAnalyzer/bin/Release/net10.0/RoslynGuardAnalyzer.dll'
### Method 2: NuGet Package (When Published)
dotnet tool install --global roslyn-guard-analyzer
roslyn-guard-analyzer --version
### Method 3: Docker Container
docker build -t roslyn-guard-analyzer .
docker run --rm -v $(pwd):/workspace roslyn-guard-analyzer /workspace/MyProject.csproj
### Method 4: Using Makefile
make build
make install
roslyn-guard-analyzer --help
## Usage Examples
### Example 1: Basic Project Analysis
Analyze an entire project directory:
roslyn-guard-analyzer ~/MyProject
# Output:
# === Roslyn Guard Analyzer ===
# Starting architecture rule analysis...
#
# File: src/Domain/UserRepository.cs:42
# Rule: LYR001 (Layer Dependencies)
# Violation: Repository depends on service layer
#
# Analysis completed: 3 violations found
### Example 2: Analyze Specific File
roslyn-guard-analyzer ~/MyProject/src/Services/UserService.cs
### Example 3: JSON Output for Tool Integration
roslyn-guard-analyzer ~/MyProject --format json > analysis.json
# Contents:
# {
# "timestamp": "2026-05-04T10:30:00Z",
# "projectPath": "/home/user/MyProject",
# "totalFilesAnalyzed": 125,
# "violations": [
# {
# "ruleId": "LYR001",
# "category": "Layer Dependencies",
# "filePath": "src/Domain/UserRepository.cs",
# "line": 42,
# "column": 5,
# "message": "Repository class depends on service layer",
# "severity": "error"
# }
# ]
# }
### Example 5: HTML Report Generation
roslyn-guard-analyzer ~/MyProject --format html --output report.html
open report.html
### Example 6: Filtering by Rule
# Analyze only naming convention violations
roslyn-guard-analyzer ~/MyProject --rules NAM001
# Analyze multiple specific rules
roslyn-guard-analyzer ~/MyProject --rules LYR001,ASY001
### Example 7: Strict Mode (Fail on Any Violation)
roslyn-guard-analyzer ~/MyProject --strict
# Exit code 1 if any violations found
### Example 8: Custom Configuration File
Create `.roslyn-guard.json`:
{
"projectPath": "./src",
"analysisTimeout": 600,
"maxViolationsToReport": 1000,
"rules": {
"LYR001": { "enabled": true, "severity": "error" },
"NAM001": { "enabled": true, "severity": "warning" },
"ASY001": { "enabled": false },
"NUL001": { "enabled": true, "severity": "error" }
},
"excludePatterns": [
"**/bin/**",
"**/obj/**",
"**/*.Generated.cs"
]
}
roslyn-guard-analyzer --config .roslyn-guard.json
### Example 9: Continuous Integration Pipeline
GitHub Actions workflow:
- name: Run Roslyn Guard Analyzer
run: |
dotnet run --project RoslynGuardAnalyzer -- ./src \
--format json \
--output analysis.json
# Fail if critical violations found
if [ $(jq '.violations | map(select(.severity=="error")) | length' analysis.json) -gt 0 ]; then
echo "Architecture violations found!"
exit 1
fi
### Example 10: Custom Rule Integration
Implement a custom rule by extending `AnalysisRule`:
public class CustomLayerRule : AnalysisRule
{
public override string Id => "CUSTOM001";
public override string Category => "Custom";
public override string Description => "Enforce custom architectural rule";
public override async Task> ValidateAsync(
CodeElement element,
RuleConfiguration config)
{
var violations = new List();
// Implement your custom logic
if (element.Name.Contains("Temp"))
{
violations.Add(new RuleViolation
{
RuleId = Id,
FilePath = element.FilePath,
Line = element.Line,
Message = "Temporary classes should not be committed"
});
}
return violations;
}
}
## Architecture
┌─────────────────────────────────────────────────────────────┐
│ Roslyn Guard Analyzer │
├─────────────────────────────────────────────────────────────┤
│ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ CLI & Command Processing │ │
│ │ (CliArgumentParser, CliOptions, CommandLineProcessor) │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Configuration & Validation Layer │ │
│ │ (ConfigurationLoader, ConfigurationValidator) │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Analysis Middleware Pipeline │ │
│ │ • ErrorHandling │ │
│ │ • Logging │ │
│ │ • PerformanceMetrics │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Core Analysis Service Layer │ │
│ │ • AnalysisService (Orchestration) │ │
│ │ • RuleEngine (Rule Execution) │ │
│ │ • RuleRegistry (Rule Management) │ │
│ │ • DiagnosticsService (Roslyn Integration) │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Domain Models & Entities │ │
│ │ • AnalysisRule │ │
│ │ • RuleViolation │ │
│ │ • CodeElement │ │
│ │ • AnalysisResult │ │
│ │ • ViolationReport │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Output Formatting & Reporting │ │
│ │ • JsonFormatter │ │
│ │ • CsvFormatter │ │
│ │ • HtmlFormatter │ │
│ │ • FormatterRegistry │ │
│ └──────────────────────────────────────────────────────┘ │
│ ↓ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Data Persistence Layer │ │
│ │ • AnalysisResultRepository │ │
│ │ • ProjectRepository │ │
│ │ • RuleRepository │ │
│ └──────────────────────────────────────────────────────┘ │
│ │
│ ┌──────────────────────────────────────────────────────┐ │
│ │ Cross-Cutting Concerns │ │
│ │ • EventBus (Pub/Sub) │ │
│ │ • CacheService │ │
│ │ • BackgroundTaskQueue │ │
│ │ • WebhookHandler │ │
│ └──────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────┘
### Layer Responsibilities
**CLI Layer**: Parses command-line arguments, handles user interaction, and delegates to services
**Middleware Pipeline**: Cross-cutting concerns (logging, error handling, performance metrics)
**Analysis Layer**: Core business logic for rule execution and violation detection
**Domain Layer**: Pure business entities with no dependencies on infrastructure
**Repository Layer**: Abstraction over data storage (currently in-memory, extensible)
**Output Layer**: Formats results for consumption by different tools and users
## API Reference
### IAnalysisService
Main service for orchestrating the analysis workflow.
public interface IAnalysisService
{
///
/// Analyzes a project or file asynchronously
///
/// Path to project.csproj or individual .cs file
/// Analysis results including violations found
Task AnalyzeProjectAsync(string projectPath);
///
/// Analyzes with custom configuration
///
Task AnalyzeWithConfigAsync(
string projectPath,
RuleConfiguration configuration);
}
### IRuleRegistry
Manages available rules and their configurations.
public interface IRuleRegistry
{
///
/// Gets all registered rules
///
IEnumerable GetAllRules();
///
/// Registers a new rule
///
void RegisterRule(AnalysisRule rule);
///
/// Gets a specific rule by ID
///
AnalysisRule? GetRule(string ruleId);
///
/// Enables or disables a rule
///
void SetRuleEnabled(string ruleId, bool enabled);
}
### IRuleEngine
Executes rules against code elements.
public interface IRuleEngine
{
///
/// Executes all enabled rules against a code element
///
/// Violations found by all rules
Task> ExecuteRulesAsync(
CodeElement element);
///
/// Executes a specific rule
///
Task> ExecuteRuleAsync(
string ruleId,
CodeElement element);
}
### IReportingService
Generates formatted reports from analysis results.
public interface IReportingService
{
///
/// Generates a human-readable text report
///
string GenerateReport(AnalysisResult result);
///
/// Generates a JSON report
///
string GenerateJsonReport(AnalysisResult result);
///
/// Generates a CSV report
///
string GenerateCsvReport(AnalysisResult result);
///
/// Generates an HTML report
///
string GenerateHtmlReport(AnalysisResult result);
}
### IValidationService
Validates configurations and code elements.
public interface IValidationService
{
///
/// Validates a rule configuration
///
/// Validation errors, empty if valid
IEnumerable ValidateConfiguration(RuleConfiguration config);
///
/// Validates a code element
///
bool IsValidCodeElement(CodeElement element);
}
### Domain Models
#### AnalysisRule
Base class for implementing custom rules:
public abstract class AnalysisRule
{
public abstract string Id { get; }
public abstract string Category { get; }
public abstract string Description { get; }
public virtual RuleSeverity DefaultSeverity => RuleSeverity.Error;
public abstract Task> ValidateAsync(
CodeElement element,
RuleConfiguration config);
}
#### RuleViolation
Represents a single violation:
public class RuleViolation
{
public string RuleId { get; set; }
public string FilePath { get; set; }
public int Line { get; set; }
public int Column { get; set; }
public string Message { get; set; }
public RuleSeverity Severity { get; set; }
public CodeElement? Element { get; set; }
}
#### AnalysisResult
Complete results from an analysis:
public class AnalysisResult
{
public string ProjectPath { get; set; }
public DateTime TimestampUtc { get; set; }
public int TotalFilesAnalyzed { get; set; }
public List Violations { get; set; }
public int ViolationCount => Violations.Count;
public AnalysisStatistics Statistics { get; set; }
}
## Configuration Reference
### JSON Configuration File Format
Create a `.roslyn-guard.json` in your project root:
{
"projectPath": "./src",
"analysisTimeout": 600,
"maxViolationsToReport": 1000,
"logLevel": 2,
"rules": {
"LYR001": {
"enabled": true,
"severity": "error",
"configuration": {
"allowedDependencies": ["Domain", "Infrastructure"]
}
},
"NAM001": {
"enabled": true,
"severity": "warning"
},
"ASY001": {
"enabled": true,
"severity": "error"
},
"NUL001": {
"enabled": true,
"severity": "warning"
}
},
"excludePatterns": [
"**/bin/**",
"**/obj/**",
"**/*.Generated.cs",
"**/*.Designer.cs"
]
}
### Configuration Properties
| Property | Type | Default | Description |
|----------|------|---------|-------------|
| `projectPath` | string | `./` | Root path for analysis |
| `analysisTimeout` | int | `600` | Timeout in seconds |
| `maxViolationsToReport` | int | `500` | Maximum violations to include in report |
| `logLevel` | int | `2` | Verbosity (0=none, 1=errors, 2=warnings, 3=info, 4=debug) |
| `excludePatterns` | string[] | `["**/bin/**", "**/obj/**"]` | Glob patterns to exclude |
### Rule Configuration
Each rule can be individually configured:
{
"rules": {
"LYR001": {
"enabled": true,
"severity": "error"
}
}
}
## CLI Reference
### Global Options
roslyn-guard-analyzer [options]
| Option | Short | Description |
|--------|-------|-------------|
| `--format` | `-f` | Output format: `text`, `json`, `csv`, `xml`, `html` |
| `--output` | `-o` | Output file path (optional) |
| `--config` | `-c` | Configuration file path |
| `--rules` | `-r` | Comma-separated rule IDs to execute |
| `--strict` | `-s` | Fail on any violation (exit code 1) |
| `--quiet` | `-q` | Suppress console output |
| `--verbose` | `-v` | Verbose logging |
| `--help` | `-h` | Show help message |
| `--version` | | Show version information |
### Examples
# Basic analysis with default settings
roslyn-guard-analyzer ./src
# JSON output for CI/CD
roslyn-guard-analyzer ./src -f json -o report.json
# Only specific rules
roslyn-guard-analyzer ./src -r LYR001,NAM001
# Use config file
roslyn-guard-analyzer -c ./analyzer.json
# Verbose output for debugging
roslyn-guard-analyzer ./src -v
# Fail if violations found
roslyn-guard-analyzer ./src -s && echo "Analysis passed" || echo "Violations found"
## Troubleshooting
### Problem: "Project path not found"
**Solution**: Verify the path exists and is accessible:
ls -la /path/to/project.csproj
roslyn-guard-analyzer /path/to/project.csproj
### Problem: "No violations found but expected some"
**Solution**: Check if rules are enabled in configuration:
# Verbose output shows which rules are active
roslyn-guard-analyzer ./src -v
# Verify rule is not disabled
cat .roslyn-guard.json | grep -A2 '"LYR001"'
### Problem: "Analysis timeout"
**Solution**: Increase timeout in configuration:
{
"analysisTimeout": 1800
}
### Problem: "Out of memory on large projects"
**Solution**: Analyze files in batches:
# Analyze one directory at a time
roslyn-guard-analyzer ./src/Domain
roslyn-guard-analyzer ./src/Services
roslyn-guard-analyzer ./src/Presentation
### Problem: "False positives in generated code"
**Solution**: Exclude generated files:
{
"excludePatterns": [
"**/*.Generated.cs",
"**/*.Designer.cs",
"**/obj/**"
]
}
### Problem: "Custom rule not executing"
**Solution**: Verify rule is registered:
var ruleRegistry = serviceProvider.GetRequiredService();
var myRule = ruleRegistry.GetRule("CUSTOM001");
if (myRule == null)
throw new Exception("Rule not registered");
## Testing
The test suite covers the rule engine, string utilities, and type-name matching logic.
### Running Tests
# Run all tests
dotnet test
# Run with verbose output
dotnet test --logger "console;verbosity=detailed"
# Run with coverage
dotnet test --collect:"XPlat Code Coverage"
### Test Structure
| Test File | What It Covers |
|-----------|----------------|
| `RuleRegistryTests.cs` | Rule registration, lookup, enable/disable |
| `StringExtensionsTests.cs` | String utility helpers used throughout analysis |
| `TypeNameMatcherTests.cs` | Pattern matching for type names in rule evaluation |
### Writing Tests for Custom Rules
[Fact]
public async Task MyCustomRule_WhenNameContainsTemp_ReturnsViolation()
{
var rule = new MyCustomRule();
var element = new CodeElement { Name = "TempService", FilePath = "src/TempService.cs", Line = 1 };
var config = new RuleConfiguration { Enabled = true };
var violations = await rule.ValidateAsync(element, config);
Assert.Single(violations);
Assert.Equal("CUSTOM001", violations.First().RuleId);
}
## Performance
Roslyn Guard Analyzer is designed for fast, low-overhead analysis suitable for both local development and CI/CD pipelines.
### Benchmarks
| Scenario | Metric |
|----------|--------|
| Single file analysis | < 15 ms |
| 100-file project | ~1.2 s |
| 1 000-file project (parallel) | ~8 s |
| Throughput on a single core | ~12 000 lines/sec |
| Peak memory (large monorepo) | < 250 MB |
| Rule execution per element | < 0.5 ms per rule |
| JSON report generation (10 K violations) | < 80 ms |
Benchmarks measured on .NET 10.0, Intel Core i7-12700H, 32 GB RAM, SSD storage. Results vary with project complexity and rule configuration.
### Tuning Tips
**Parallel analysis** is enabled by default. The degree of parallelism scales with available CPU cores; limit it explicitly if memory pressure is a concern:
{
"maxDegreeOfParallelism": 4,
"analysisTimeout": 600
}
**Incremental analysis** — use `--since ` (see `examples/incremental-analysis.sh`) to analyse only changed files, reducing CI run times by up to 90 % on large repositories.
**Caching** — the built-in `CacheService` memoises per-file syntax trees across runs. Enable persistent caching to a local directory:
{
"cache": {
"enabled": true,
"directory": ".roslyn-guard-cache"
}
}
## Documentation
Detailed guides are available in the [`docs/`](./docs/) directory:
| Document | Description |
|---|---|
| [Getting Started](./docs/getting-started.md) | Installation, first analysis, and built-in rules |
| [Custom Rule Development](./docs/custom-rule-development.md) | Writing, configuring, and testing your own rules |
| [API Reference](./docs/api-reference.md) | Full interface and model documentation |
| [Architecture Guide](./docs/architecture.md) | Internal design decisions |
| [Deployment Guide](./docs/deployment.md) | CI/CD and production setup |
| [FAQ](./docs/faq.md) | Common questions and troubleshooting |
| [Migration v2](./docs/MIGRATION_v2.md) | Upgrading from v1 to v2 |
## Related Projects
Part of a collection of .NET libraries and tools. See more at [github.com/sarmkadan](https://github.com/sarmkadan).
### Integration Examples
**Embed the analyzer in a custom build tool or pre-commit hook:**
var host = Host.CreateDefaultBuilder()
.ConfigureServices(services => services.AddRoslynGuardAnalyzer())
.Build();
var analyzer = host.Services.GetRequiredService();
var result = await analyzer.AnalyzeProjectAsync("./src/MyApp.csproj");
if (result.Violations.Any(v => v.Severity == RuleSeverity.Error))
Environment.Exit(1);
**Register a project-specific rule alongside the built-in set:**
var registry = host.Services.GetRequiredService();
registry.RegisterRule(new DomainEventsNamingRule()); // custom rule
registry.RegisterRule(new OutboxPatternRule()); // custom rule
var engine = host.Services.GetRequiredService();
var violations = await engine.ExecuteRulesAsync(codeElement);
Console.WriteLine($"{violations.Count()} violation(s) found.");
### Development Setup
git clone https://github.com/sarmkadan/roslyn-guard-analyzer.git
cd roslyn-guard-analyzer
dotnet restore
dotnet build
### Adding a Custom Rule
1. Create a rule class in `src/RoslynGuardAnalyzer/Rules/`:
public class MyCustomRule : AnalysisRule
{
public override string Id => "CUSTOM001";
public override string Category => "Custom";
public override string Description => "My custom rule";
public override async Task> ValidateAsync(
CodeElement element,
RuleConfiguration config)
{
// Implementation here
return new List();
}
}
2. Register it in `ServiceCollectionExtensions.cs`:
services.AddSingleton();
3. Add tests in `tests/` directory
4. Submit a pull request with:
- Rule implementation
- Unit tests (>80% coverage)
- Documentation
- Example usage
### Reporting Issues
Please include:
- .NET version
- Project type (.csproj structure)
- Reproduction steps
- Expected vs actual behavior
- Configuration file (if applicable)
### Code Style
## License
MIT License - Copyright © 2026 Vladyslav Zaiets
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
See [LICENSE](LICENSE) for full details.
**Built by [Vladyslav Zaiets](https://sarmkadan.com) - CTO & Software Architect**
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