Here is a list of all files with brief descriptions:

[detail level 123456]

src
extensions
curl.c	Libcurl helpers and buffers used by HTTP-related VM opcodes
ini.c	Iniparser helpers for Fun VM INI-related opcodes (conditional build)
json.c	Json-c helpers for Fun VM JSON-related opcodes (conditional build)
kcgi.c	Thin kcgi integration helpers used by VM opcodes under src/vm/kcgi/
openssl.c	OpenSSL-based hashing helpers used by crypto-related VM opcodes
pcre2.c	PCRE2 helpers for Fun VM extension opcodes (conditional build)
pcsc.c	PC/SC smartcard helper registries and lookup utilities for VM opcodes
redis.c	Hiredis handle registry and reply mapping helpers for the Fun VM
sqlite.c	SQLite handle registry and helper utilities for the Fun VM extension
xml2.c	Libxml2 handle registries and helper utilities for the Fun VM extension
rust
target
debug
deps
hello_c_world-59126b87de693b23.d
hello_c_world-8cd0f8010404e25e.d
release
deps
hello_c_world-cfaa999f5d83d81b.d
libhello_c_world.d
eh_personality.c
array_utils.c	Utility functions for operating on Value arrays
bytecode.c	Bytecode container utilities: creation, mutation, dump helpers
bytecode.h	Definitions for the Fun VM bytecode: opcodes, instruction format, and bytecode container API
fun.c	Command-line interface and entry point for the Fun interpreter
fun_test.c	Minimal bytecode-level test harness for core VM operations
funstx.c	Syntax checker and auto-fixer tool for Fun source files
iter.c	Iterator-style helpers exposed as built-ins (enumerate, zip)
map.c	Simple string-keyed map implementation backing VAL_MAP Values
parser.c	Implements the Fun language parser that converts source code to bytecode
parser.h	Public API for parsing Fun source into bytecode
parser_utils.c	Low-level parsing helpers and include preprocessor for the Fun parser
repl.c	Interactive Read–Eval–Print Loop (REPL) for the Fun language
repl.h	Interactive Read-Eval-Print Loop (REPL) entry point
str_utils.c	Helpers for manipulating C strings and bridging with Value arrays
string.c	String built-ins wrappers used by VM opcodes
test_opcodes.c	Minimal executable exercising a subset of Fun VM opcodes
value.c	Implementation of the runtime Value type, including constructors, dynamic array/map utilities, copying, comparison, printing, and string conversion helpers
value.h	Defines the Value type and associated functions for the Fun VM
vm.c	Core virtual machine implementation and opcode dispatch for Fun
vm.h	Core virtual machine data structures and public VM API