Swift Validator

This tool analyzes Swift source code to surface syntax errors and common semantic issues without performing a full build. It is designed for developers, students, and CI workflows who need rapid feedback on code blocks, snippets, or PR changes. Conceptually, the validator tokenizes the input, parses it against a Swift subset grammar, and runs a light semantic pass to identify mismatched braces, undeclared identifiers, and simple type inconsistencies that can be inferred statically. The result is a structured list of issues with line and column positions, severity, and suggested fixes where feasible. The tool supports configurable options such as strict mode and lint rules to enforce style and best practices. Its value lies in early error discovery, faster iteration cycles, and easier code reviews, especially when working with unfamiliar Swift constructs or new language features. Typical use cases include validating small functions, structs, or protocol conformance blocks before committing changes, validating code samples in tutorials, and integrating quick checks into CI pipelines. Unique differentiators include immediate, position-accurate diagnostics, version-targeted checks, and optional lint-style rules that go beyond mere syntax. Use cases span education, onboarding, code reviews, and lightweight pre-submit validation.