Module scheme 

Scheme interpreter (ported from OpenJade)

This module contains the Scheme R4RS interpreter ported from OpenJade’s style/ directory.

Architecture

Following OpenJade’s structure:

• value: Scheme value types (corresponds to ELObj hierarchy)
• environment: Variable bindings and lexical scoping (corresponds to Interpreter identifier tables)
• parser: Lexer and S-expression parser (corresponds to SchemeParser.cxx)
• evaluator: Core eval loop (corresponds to Interpreter.cxx)
• primitives/: Built-in Scheme procedures (corresponds to primitive.cxx)

OpenJade Correspondence

Dazzle Module	OpenJade File	Lines	Purpose
value.rs	style/ELObj.{h,cxx}	~1500	Value types & operations
environment.rs	style/Interpreter.cxx	~500	Variable bindings
parser.rs	style/SchemeParser.cxx	~2500	Tokenizer & parser
evaluator.rs	style/Interpreter.cxx	~2000	Eval loop & control flow
primitives/	style/primitive.cxx	~5700	236 built-in procedures

Total: ~12,200 lines C++ → estimated ~10,000 lines Rust

Re-exports

pub use environment::Environment;

pub use evaluator::EvalError;

pub use evaluator::EvalResult;

pub use evaluator::Evaluator;

pub use parser::ParseError;

pub use parser::Parser;

pub use parser::Position;

pub use parser::Tokenizer;

pub use value::PairData;

pub use value::Procedure;

pub use value::Value;

Modules

environment

Scheme environment (variable bindings and lexical scoping)

evaluator

Scheme evaluator (eval loop)

parser

Scheme parser (lexer + S-expression parser)

primitives

Scheme primitive procedures

value

Scheme value types