Crate artichoke_core

This crate provides a set of traits that, when implemented, comprise a complete Ruby interpreter.

artichoke-core is no_std + alloc with an optional (enabled by default) std feature.

Interpreters implement the traits in Artichoke Core to indicate which capabilities they offer. Defining interpreters by their capabilities allows for interpreter agnostic implementations of Ruby Core and Standard Library.

Interpreter APIs

Artichoke Core defines traits for the following interpreter capabilities:

• DefineConstant: Define global, class, and module constants to be arbitrary Ruby Values.
• Eval: Execute Ruby source code on an interpreter from various sources.
• Globals: Get, set, and unset interpreter-level global variables.
• Intern: Intern bytestrings to a cheap to copy and compare symbol type.
• Io: External I/O APIs, such as writing to the standard output of the current process.
• LoadSources: Require source code from interpreter disk or File gems.
• Parser: Manipulate the parser state, e.g. setting the current filename.
• Prng: An interpreter-level pseudorandom number generator that is the backend for Random::DEFAULT.
• Regexp: Manipulate Regexp global state.
• ReleaseMetadata: Enable interpreters to describe themselves.
• TopSelf: Access to the root execution context.
• Warn: Emit warnings.

Artichoke Core also describes what capabilities a Ruby Value must have and how to convert between Ruby VM and Rust types.

Examples

artichoke-backend is one implementation of the artichoke-core traits.

To use all of the APIs defined in Artichoke Core, bring the traits into scope by importing the prelude:

use artichoke_core::prelude::*;

Crate features

All features are enabled by default:

• std: By default, artichoke-core is no_std + alloc. Enabling this feature adds several trait methods that depend on OsStr and Path as well as several implementations of std::error::Error.

Modules

coerce_to_numeric	Coerce Ruby values to native numerics.
constant	Define constants on an interpreter.
convert	Convert between Rust and Ruby objects.
debug	Routines for debugging and printing exception messages.
eval	Run code on an Artichoke interpreter.
file	File-backed Rust extensions for the Artichoke VM.
globals	Get and set global variables on an interpreter.
intern	Intern Symbols on an interpreter.
io	I/O read and write APIs.
load	Load Ruby and Rust sources into the VM.
parser	Parse code on an Artichoke interpreter.
prelude	A “prelude” for users of the artichoke-core crate.
prng	Interpreter global psuedorandom number generator.
regexp	Track Regexp global state.
release_metadata	Information about an Artichoke build.
top_self	Expose the global context, called top self, to the interpreter.
types	Ruby and Rust type mappings.
value	Types that implement Value can be represented in the Artichoke VM.
warn	Emit warnings during interpreter execution.