# Sprint 49: WebAssembly Disassembler Implementation Summary

## Overview

This document summarizes the implementation of the WebAssembly disassembly functionality in the deep_wasm/service.rs file, which addresses a high-severity technical debt issue. This implementation is part of Sprint 49's technical debt reduction efforts.

## Implementation Details

### Files Modified

1. **server/src/services/deep_wasm/service.rs**
   - Added wasmparser import
   - Updated analyze method to implement function disassembly
   - Added test for disassembly functionality

### Key Improvements

1. **Function Disassembly**
   - The service now properly disassembles WebAssembly functions using the existing Disassembler
   - Implemented selective disassembly of exported functions or those with high complexity
   - Created a reparser for the WebAssembly module to access function bodies

2. **Pattern Detection**
   - Added pattern detection across all disassembled functions
   - Pattern detection identifies issues like:
     - Dead code after unreachable instructions
     - Infinite loops without side effects
     - Excessive stack manipulation
     - Deep control flow nesting

3. **Test Coverage**
   - Added a comprehensive test case (test_disassemble_wasm_module)
   - Test verifies disassembly, pattern detection, and basic block analysis

## Technical Debt Reduction

This implementation addresses one of the five high-severity violations identified in Sprint 49's plan:

- **Issue**: Missing disassembly support in deep_wasm/service.rs
- **Severity**: HIGH
- **Estimated debt**: 1.5 hours
- **Implementation**: Modified service.rs to leverage existing disassembler.rs

## Integration With Existing Code

The implementation integrates with existing components:

1. **BytecodeAnalyzer**: Provides function-level metrics
2. **Disassembler**: Performs instruction-level disassembly and pattern detection
3. **DeepWasmReport**: Contains disassembled functions and patterns

## Testing Strategy

The implementation includes a dedicated test case that:
1. Creates a DeepWasmService with deep analysis enabled
2. Analyzes a WebAssembly file with source code
3. Verifies disassembly results contain instructions and basic blocks
4. Checks pattern detection for proper structure

## Next Steps

1. Run property-based tests to ensure disassembly is robust
2. Add regression tests with real-world WebAssembly files
3. Continue with the remaining technical debt reduction tasks:
   - Implement language analyzers in context.rs
   - Implement multi-language support in deep_context.rs