git.delta.rocks / jrsonnet / refs/commits / 1d4b842070e4

1#![feature(custom_inner_attributes)]23pub mod import;4pub mod interop;5pub mod val_extract;6pub mod val_make;7pub mod val_modify;8pub mod vars_tlas;910use import::NativeImportResolver;11use jrsonnet_evaluator::{EvaluationState, ManifestFormat, Val};12use std::{13	alloc::Layout,14	ffi::{CStr, CString},15	os::raw::{c_char, c_double, c_int, c_uint},16	path::PathBuf,17	rc::Rc,18};1920/// WASM stub21#[cfg(target_arch = "wasm32")]22#[no_mangle]23pub extern "C" fn _start() {}2425#[no_mangle]26pub extern "C" fn jsonnet_version() -> &'static [u8; 8] {27	b"v0.16.0\0"28}2930#[no_mangle]31pub extern "C" fn jsonnet_make() -> *mut EvaluationState {32	let state = EvaluationState::default();33	state.with_stdlib();34	state.settings_mut().import_resolver = Box::new(NativeImportResolver::default());35	Box::into_raw(Box::new(state))36}3738/// # Safety39#[no_mangle]40#[allow(clippy::boxed_local)]41pub unsafe extern "C" fn jsonnet_destroy(vm: *mut EvaluationState) {42	Box::from_raw(vm);43}4445#[no_mangle]46pub extern "C" fn jsonnet_max_stack(vm: &EvaluationState, v: c_uint) {47	vm.settings_mut().max_stack = v as usize;48}4950// jrsonnet currently have no GC, so these functions is no-op51#[no_mangle]52pub extern "C" fn jsonnet_gc_min_objects(_vm: &EvaluationState, _v: c_uint) {}53#[no_mangle]54pub extern "C" fn jsonnet_gc_growth_trigger(_vm: &EvaluationState, _v: c_double) {}5556#[no_mangle]57pub extern "C" fn jsonnet_string_output(vm: &EvaluationState, v: c_int) {58	match v {59		1 => vm.set_manifest_format(ManifestFormat::None),60		0 => vm.set_manifest_format(ManifestFormat::Json(4)),61		_ => panic!("incorrect output format"),62	}63}6465/// # Safety66///67/// This function is most definitely broken, but it works somehow, see TODO inside68#[no_mangle]69pub unsafe extern "C" fn jsonnet_realloc(70	_vm: &EvaluationState,71	buf: *mut u8,72	sz: usize,73) -> *mut u8 {74	if buf.is_null() {75		assert!(sz != 0);76		return std::alloc::alloc(Layout::from_size_align(sz, std::mem::align_of::<u8>()).unwrap());77	}78	// TODO: Somehow store size of allocation, because its real size is probally not 16 :D79	// OR (Alternative way of fixing this TODO)80	// TODO: Standard allocator uses malloc, and it doesn't uses allocation size,81	// TODO: so it should work in normal cases. Maybe force allocator for this library?82	let old_layout = Layout::from_size_align(16, std::mem::align_of::<u8>()).unwrap();83	if sz == 0 {84		std::alloc::dealloc(buf, old_layout);85		return std::ptr::null_mut();86	}87	std::alloc::realloc(buf, old_layout, sz)88}8990/// # Safety91#[no_mangle]92#[allow(clippy::boxed_local)]93pub unsafe extern "C" fn jsonnet_json_destroy(_vm: &EvaluationState, v: *mut Val) {94	Box::from_raw(v);95}9697#[no_mangle]98pub extern "C" fn jsonnet_native_callback() {99	todo!()100}101102#[no_mangle]103pub extern "C" fn jsonnet_max_trace(vm: &EvaluationState, v: c_uint) {104	vm.set_max_trace(v as usize)105}106107/// # Safety108///109/// This function is safe, if received v is a pointer to normal C string110#[no_mangle]111pub unsafe extern "C" fn jsonnet_evaluate_file(112	vm: &EvaluationState,113	filename: *const c_char,114	error: &mut c_int,115) -> *const c_char {116	vm.run_in_state(|| {117		let filename = CStr::from_ptr(filename);118		match vm119			.evaluate_file_raw_nocwd(&PathBuf::from(filename.to_str().unwrap()))120			.and_then(|v| vm.with_tla(v))121			.and_then(|v| vm.manifest(v))122		{123			Ok(v) => {124				*error = 0;125				CString::new(&*v as &str).unwrap().into_raw()126			}127			Err(e) => {128				*error = 1;129				let out = vm.stringify_err(&e);130				CString::new(&out as &str).unwrap().into_raw()131			}132		}133	})134}135136/// # Safety137///138/// This function is safe, if received v is a pointer to normal C string139#[no_mangle]140pub unsafe extern "C" fn jsonnet_evaluate_snippet(141	vm: &EvaluationState,142	filename: *const c_char,143	snippet: *const c_char,144	error: &mut c_int,145) -> *const c_char {146	vm.run_in_state(|| {147		let filename = CStr::from_ptr(filename);148		let snippet = CStr::from_ptr(snippet);149		match vm150			.evaluate_snippet_raw(151				Rc::new(PathBuf::from(filename.to_str().unwrap())),152				snippet.to_str().unwrap().into(),153			)154			.and_then(|v| vm.with_tla(v))155			.and_then(|v| vm.manifest(v))156		{157			Ok(v) => {158				*error = 0;159				CString::new(&*v as &str).unwrap().into_raw()160			}161			Err(e) => {162				*error = 1;163				let out = vm.stringify_err(&e);164				CString::new(&out as &str).unwrap().into_raw()165			}166		}167	})168}169170#[no_mangle]171pub extern "C" fn jsonnet_evaluate_file_multi() {172	todo!()173}174#[no_mangle]175pub extern "C" fn jsonnet_evaluate_snippet_multi() {176	todo!()177}178#[no_mangle]179pub extern "C" fn jsonnet_evaluate_file_stream() {180	todo!()181}182#[no_mangle]183pub extern "C" fn jsonnet_evaluate_snippet_stream() {184	todo!()185}