git.delta.rocks / jrsonnet / refs/commits / 6e40dd49aa72

1pub mod import;2pub mod interop;3pub mod native;4pub mod val_extract;5pub mod val_make;6pub mod val_modify;7pub mod vars_tlas;89use import::NativeImportResolver;10use jrsonnet_evaluator::{EvaluationState, ManifestFormat, Val};11use std::{12	alloc::Layout,13	ffi::{CStr, CString},14	os::raw::{c_char, c_double, c_int, c_uint},15	path::PathBuf,16	rc::Rc,17};1819/// WASM stub20#[cfg(target_arch = "wasm32")]21#[no_mangle]22pub extern "C" fn _start() {}2324#[no_mangle]25pub extern "C" fn jsonnet_version() -> &'static [u8; 8] {26	b"v0.16.0\0"27}2829#[no_mangle]30pub extern "C" fn jsonnet_make() -> *mut EvaluationState {31	let state = EvaluationState::default();32	state.with_stdlib();33	state.settings_mut().import_resolver = Box::new(NativeImportResolver::default());34	Box::into_raw(Box::new(state))35}3637/// # Safety38#[no_mangle]39#[allow(clippy::boxed_local)]40pub unsafe extern "C" fn jsonnet_destroy(vm: *mut EvaluationState) {41	Box::from_raw(vm);42}4344#[no_mangle]45pub extern "C" fn jsonnet_max_stack(vm: &EvaluationState, v: c_uint) {46	vm.settings_mut().max_stack = v as usize;47}4849// jrsonnet currently have no GC, so these functions is no-op50#[no_mangle]51pub extern "C" fn jsonnet_gc_min_objects(_vm: &EvaluationState, _v: c_uint) {}52#[no_mangle]53pub extern "C" fn jsonnet_gc_growth_trigger(_vm: &EvaluationState, _v: c_double) {}5455#[no_mangle]56pub extern "C" fn jsonnet_string_output(vm: &EvaluationState, v: c_int) {57	match v {58		1 => vm.set_manifest_format(ManifestFormat::String),59		0 => vm.set_manifest_format(ManifestFormat::Json(4)),60		_ => panic!("incorrect output format"),61	}62}6364/// # Safety65///66/// This function is most definitely broken, but it works somehow, see TODO inside67#[no_mangle]68pub unsafe extern "C" fn jsonnet_realloc(69	_vm: &EvaluationState,70	buf: *mut u8,71	sz: usize,72) -> *mut u8 {73	if buf.is_null() {74		assert!(sz != 0);75		return std::alloc::alloc(Layout::from_size_align(sz, std::mem::align_of::<u8>()).unwrap());76	}77	// TODO: Somehow store size of allocation, because its real size is probally not 16 :D78	// OR (Alternative way of fixing this TODO)79	// TODO: Standard allocator uses malloc, and it doesn't uses allocation size,80	// TODO: so it should work in normal cases. Maybe force allocator for this library?81	let old_layout = Layout::from_size_align(16, std::mem::align_of::<u8>()).unwrap();82	if sz == 0 {83		std::alloc::dealloc(buf, old_layout);84		return std::ptr::null_mut();85	}86	std::alloc::realloc(buf, old_layout, sz)87}8889/// # Safety90#[no_mangle]91#[allow(clippy::boxed_local)]92pub unsafe extern "C" fn jsonnet_json_destroy(_vm: &EvaluationState, v: *mut Val) {93	Box::from_raw(v);94}9596#[no_mangle]97pub extern "C" fn jsonnet_max_trace(vm: &EvaluationState, v: c_uint) {98	vm.set_max_trace(v as usize)99}100101/// # Safety102///103/// This function is safe, if received v is a pointer to normal C string104#[no_mangle]105pub unsafe extern "C" fn jsonnet_evaluate_file(106	vm: &EvaluationState,107	filename: *const c_char,108	error: &mut c_int,109) -> *const c_char {110	vm.run_in_state(|| {111		let filename = CStr::from_ptr(filename);112		match vm113			.evaluate_file_raw_nocwd(&PathBuf::from(filename.to_str().unwrap()))114			.and_then(|v| vm.with_tla(v))115			.and_then(|v| vm.manifest(v))116		{117			Ok(v) => {118				*error = 0;119				CString::new(&*v as &str).unwrap().into_raw()120			}121			Err(e) => {122				*error = 1;123				let out = vm.stringify_err(&e);124				CString::new(&out as &str).unwrap().into_raw()125			}126		}127	})128}129130/// # Safety131///132/// This function is safe, if received v is a pointer to normal C string133#[no_mangle]134pub unsafe extern "C" fn jsonnet_evaluate_snippet(135	vm: &EvaluationState,136	filename: *const c_char,137	snippet: *const c_char,138	error: &mut c_int,139) -> *const c_char {140	vm.run_in_state(|| {141		let filename = CStr::from_ptr(filename);142		let snippet = CStr::from_ptr(snippet);143		match vm144			.evaluate_snippet_raw(145				Rc::new(PathBuf::from(filename.to_str().unwrap())),146				snippet.to_str().unwrap().into(),147			)148			.and_then(|v| vm.with_tla(v))149			.and_then(|v| vm.manifest(v))150		{151			Ok(v) => {152				*error = 0;153				CString::new(&*v as &str).unwrap().into_raw()154			}155			Err(e) => {156				*error = 1;157				let out = vm.stringify_err(&e);158				CString::new(&out as &str).unwrap().into_raw()159			}160		}161	})162}163164#[no_mangle]165pub extern "C" fn jsonnet_evaluate_file_multi() {166	todo!()167}168#[no_mangle]169pub extern "C" fn jsonnet_evaluate_snippet_multi() {170	todo!()171}172#[no_mangle]173pub extern "C" fn jsonnet_evaluate_file_stream() {174	todo!()175}176#[no_mangle]177pub extern "C" fn jsonnet_evaluate_snippet_stream() {178	todo!()179}