Imandra IDE

Provides intelligent code completion for ReasonML and OCaml by leveraging the Imandra reasoning engine's type inference system. The extension parses incomplete code expressions, infers their types using the underlying formal verification engine, and suggests completions that match the inferred type signature. This integrates with VS Code's IntelliSense API to deliver context-aware suggestions based on the full type environment of the current module.

Displays inferred types, function signatures, and proof-relevant metadata when hovering over code identifiers. The extension queries the Imandra reasoning engine to resolve the type of any expression, including polymorphic types, dependent types, and proof obligations. Hover information includes the fully-qualified type signature, module context, and links to formal specifications or proof states associated with the identifier.

Automatically invokes the Imandra reasoning engine to verify formal properties, invariants, and safety specifications whenever code is saved. The extension parses ReasonML/OCaml code, extracts formal specifications (written as comments or special annotations), and submits them to Imandra for automated reasoning. Results are displayed as inline diagnostics, highlighting code regions that violate properties or contain unproven obligations, with explanations of counterexamples or proof failures.

Provides an interactive Read-Eval-Print Loop (REPL) panel within VS Code where developers can evaluate ReasonML/OCaml expressions in the context of the current file or project. Expressions are sent to the Imandra reasoning engine for evaluation, which computes results and can also perform formal analysis (e.g., checking if an expression satisfies a property). The REPL maintains state across multiple evaluations and integrates with the file's module context.

Indexes all formal specifications, invariants, and proof obligations across the entire codebase and provides navigation features to jump between related specifications and implementations. The extension scans ReasonML/OCaml files for Imandra specification annotations, builds a searchable index, and enables 'Go to Definition' and 'Find References' operations that link code to its formal specifications. This allows developers to understand the formal contract of any function and see all code that depends on it.

Displays the current proof state and outstanding proof obligations in a sidebar panel, updated incrementally as code is edited. The extension tracks which functions have verified proofs, which have unproven obligations, and which have failed verification, with visual indicators (checkmarks, warnings, errors) in the editor gutter. Clicking on an obligation reveals details about what needs to be proven and suggestions for proof strategies or hints.