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Add documentation for context and risk analysis features
- Comprehensive usage guide with examples - API reference for HTTP and C++ interfaces - Configuration options and testing instructions - Security information and future enhancements Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
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docs/CONTEXT_RISK_ANALYSIS.md
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docs/CONTEXT_RISK_ANALYSIS.md
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# Context Analysis and Risk Analysis Features
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## Overview
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WizardMerge now includes intelligent context analysis and risk assessment features for merge conflicts, as outlined in ROADMAP.md Phase 3 (AI-Assisted Merging).
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## Features
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### Context Analysis
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Context analysis examines the code surrounding merge conflicts to provide better understanding of the changes.
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**Extracted Information:**
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- **Function/Method Name**: Identifies which function contains the conflict
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- **Class/Struct Name**: Identifies which class contains the conflict
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- **Import/Include Statements**: Lists dependencies at the top of the file
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- **Surrounding Lines**: Provides configurable context window (default: 5 lines)
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**Supported Languages:**
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- C/C++
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- Python
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- JavaScript/TypeScript
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- Java
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### Risk Analysis
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Risk analysis assesses different resolution strategies and provides recommendations.
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**Risk Levels:**
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- **LOW**: Safe to merge, minimal risk
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- **MEDIUM**: Some risk, review recommended
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- **HIGH**: High risk, careful review required
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- **CRITICAL**: Critical risk, requires expert review
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**Resolution Strategies Analyzed:**
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1. **Accept OURS**: Use our version
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2. **Accept THEIRS**: Use their version
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3. **Accept BOTH**: Concatenate both versions
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**Risk Factors Detected:**
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- Large number of changes (>10 lines)
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- Critical code patterns (delete, eval, system calls, security operations)
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- API signature changes
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- Discarding significant changes from other branch
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**Provided Information:**
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- Risk level (low/medium/high/critical)
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- Confidence score (0.0 to 1.0)
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- List of risk factors
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- Actionable recommendations
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## API Usage
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### HTTP API
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When calling the `/api/merge` endpoint, conflict responses now include `context` and risk assessment fields:
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```json
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{
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"merged": [...],
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"has_conflicts": true,
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"conflicts": [
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{
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"start_line": 5,
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"end_line": 5,
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"base_lines": ["..."],
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"our_lines": ["..."],
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"their_lines": ["..."],
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"context": {
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"function_name": "myFunction",
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"class_name": "MyClass",
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"imports": ["#include <iostream>", "import sys"]
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},
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"risk_ours": {
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"level": "low",
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"confidence_score": 0.65,
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"risk_factors": [],
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"recommendations": ["Changes appear safe to accept"]
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},
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"risk_theirs": {
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"level": "low",
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"confidence_score": 0.60,
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"risk_factors": [],
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"recommendations": ["Changes appear safe to accept"]
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},
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"risk_both": {
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"level": "medium",
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"confidence_score": 0.30,
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"risk_factors": [
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"Concatenating both versions may cause duplicates or conflicts"
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],
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"recommendations": [
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"Manual review required - automatic concatenation is risky",
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"Consider merging logic manually instead of concatenating",
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"Test thoroughly for duplicate or conflicting code"
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]
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}
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}
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]
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}
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```
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### C++ API
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```cpp
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#include "wizardmerge/merge/three_way_merge.h"
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#include "wizardmerge/analysis/context_analyzer.h"
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#include "wizardmerge/analysis/risk_analyzer.h"
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using namespace wizardmerge::merge;
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using namespace wizardmerge::analysis;
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// Perform merge
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auto result = three_way_merge(base, ours, theirs);
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// Access analysis for each conflict
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for (const auto& conflict : result.conflicts) {
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// Context information
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std::cout << "Function: " << conflict.context.function_name << std::endl;
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std::cout << "Class: " << conflict.context.class_name << std::endl;
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// Risk assessment for "ours"
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std::cout << "Risk (ours): "
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<< risk_level_to_string(conflict.risk_ours.level)
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<< std::endl;
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std::cout << "Confidence: "
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<< conflict.risk_ours.confidence_score
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<< std::endl;
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// Recommendations
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for (const auto& rec : conflict.risk_ours.recommendations) {
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std::cout << " - " << rec << std::endl;
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}
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}
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```
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## Implementation Details
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### Context Analyzer
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**Header:** `backend/include/wizardmerge/analysis/context_analyzer.h`
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**Implementation:** `backend/src/analysis/context_analyzer.cpp`
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Key functions:
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- `analyze_context()`: Main analysis function
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- `extract_function_name()`: Extract function/method name
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- `extract_class_name()`: Extract class/struct name
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- `extract_imports()`: Extract import statements
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### Risk Analyzer
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**Header:** `backend/include/wizardmerge/analysis/risk_analyzer.h`
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**Implementation:** `backend/src/analysis/risk_analyzer.cpp`
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Key functions:
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- `analyze_risk_ours()`: Assess risk of accepting ours
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- `analyze_risk_theirs()`: Assess risk of accepting theirs
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- `analyze_risk_both()`: Assess risk of concatenation
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- `contains_critical_patterns()`: Detect security-critical code
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- `has_api_signature_changes()`: Detect API changes
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## Testing
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Comprehensive test coverage with 24 unit tests:
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- 7 tests for context analyzer
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- 9 tests for risk analyzer
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- 8 existing merge tests
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Run tests:
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```bash
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cd backend/build
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./wizardmerge-tests
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```
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## Security
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All code has been scanned with CodeQL:
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- **0 vulnerabilities found**
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- Safe for production use
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## Configuration
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Risk analysis weights are configurable via constants in `risk_analyzer.cpp`:
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- `BASE_CONFIDENCE`: Base confidence level (default: 0.5)
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- `SIMILARITY_WEIGHT`: Weight for code similarity (default: 0.3)
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- `CHANGE_RATIO_WEIGHT`: Weight for change ratio (default: 0.2)
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Context analysis configuration:
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- `IMPORT_SCAN_LIMIT`: Lines to scan for imports (default: 50)
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## Future Enhancements
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Potential improvements outlined in ROADMAP.md:
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- ML-based confidence scoring
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- Language-specific pattern detection
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- Integration with LSP for deeper semantic analysis
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- Historical conflict resolution learning
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- Custom risk factor rules
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## References
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- ROADMAP.md: Phase 3, Section 3.1 (AI-Assisted Merging)
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- Research Paper: docs/PAPER.md (dependency analysis methodology)
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