This module provides pretty-printing support for popular third-party crates that are not part of the Rust standard library.

Currently supported

• smol_str::SmolStr - Summary and synthetic provider
• smallvec::SmallVec<T, N> - Summary and synthetic provider

Features

SmolStr

The SmolStr type provides both a summary provider (for quick display) and a synthetic provider (for inspecting internal structure).

Summary Provider:

• Displays the string content in quotes, e.g., "hello"
• Works for all three internal variants (Inline, Static, Heap)

Synthetic Provider: Exposes the following child fields:

• variant - String showing the internal representation: "Inline", "Static", or "Heap"
• length - The string length as an unsigned integer
• content - The string content
• pointer - The memory address (only for Static and Heap variants)

Example:

(smol_str::SmolStr) inline_short = "hello" {
  variant = "Inline"
  length = 5
  content = "hello"
}

(smol_str::SmolStr) static_str = "static string" {
  variant = "Static"
  length = 13
  content = "static string"
  pointer = 0x000000010004197c
}

(smol_str::SmolStr) heap_long = "this is a very long string that will be heap allocated" {
  variant = "Heap"
  length = 54
  content = "this is a very long string that will be heap allocated"
  pointer = 0x00006000014640a0
}

SmallVec

The SmallVec type provides both a summary provider and synthetic provider for inspecting inline vs heap storage.

Usage:

To load this in LLDB, add to your .lldbinit or run in LLDB:

command script import "/path/to/your/project/rust_bonus_types.py"

Or create a .lldbinit in your project directory with:

command script import rust_bonus_types.py

Testing

A test crate is provided in debug_test/ with example values for all supported types. Build and run the tests with:

cd debug_test
cargo build
lldb -s lldb_scripts/test_smolstr_synthetic.lldb