~/projects/sharpfocus ▊

SharpFocus

See the data flow. Ignore the noise.

The Problem

Your service crashes with a null reference. The stack trace shows where it failed, but not why. Was it the cache? The database? A validation check that ran moments before? Traditional tools show you every mention of the variable—hundreds of lines—but can't tell you which ones actually matter.

The Solution

SharpFocus uses program slicing to show you exactly what influences a variable and what it influences. Click any variable, and everything irrelevant fades away. What's left is the dependency chain—the handful of statements that actually matter.

VS Code Rider

backward_slice: What code could have set this to null?

forward_slice: What code depends on this value?

focus_mode: Show me both. Hide everything else.

Get Started

VS Code

ext install RahulTR.sharpfocus

marketplace → releases →

JetBrains Rider

Settings → Plugins → SharpFocus

plugin page →

View on GitHub

Learn More

01

Understanding Code Through Data Flow

The dependency problem and how program slicing solves it

02

The Analysis Engine

Control flow graphs, dataflow analysis, and fixpoint computation

03

Advanced Analysis Techniques

Transfer functions, alias analysis, and performance optimization

How It Works

In VS Code

1

Open any C# file and click on a variable, parameter, or field

2

SharpFocus instantly analyzes and highlights the complete data flow

3

Use Ctrl+Alt+N/P to navigate through dependencies

Before

After

In JetBrains Rider

1

Works seamlessly with Rider's existing features

2

Same powerful analysis, native Rider integration

3

Color-coded gutter icons and inline highlights

Before

After