PikachuHy's Schemea scheme language implementation

A lightweight Scheme implementation in C++ (~14k LOC), designed to drive TeXmacs

Complete Type System

Unified SCM type supporting 19 data types including NONE, NIL, LIST, NUM, FLOAT, RATIO, CHAR, STR, SYM, BOOL, PROC, FUNC, CONT, MACRO, HASH_TABLE, VECTOR, PORT, PROMISE, MODULE

Continuation Support

Full continuation support implemented with setjmp/longjmp, including call/cc and dynamic-wind

Tail Recursion Optimization

Efficient tail call optimization using goto to reduce stack depth

Rich Built-in Functions

Comprehensive library including list operations, numeric functions (including gcd/lcm), string/char manipulation, hash tables, vectors, ports, lazy evaluation primitives (delay/force), and macro debugging utilities (macroexpand-1, macroexpand)

Modular Architecture

Clean modular design with separate files for each special form and built-in function category

Source Location Tracking

Complete source position tracking (file, line, column) with enhanced error reporting and call stack tracing