1#![cfg_attr(feature = "unstable", feature(stmt_expr_attributes))]2#![allow(macro_expanded_macro_exports_accessed_by_absolute_paths)]3#![warn(clippy::all, clippy::nursery)]45mod builtin;6mod ctx;7mod dynamic;8pub mod error;9mod evaluate;10mod function;11mod import;12mod integrations;13mod map;14pub mod native;15mod obj;16pub mod trace;17mod val;1819pub use ctx::*;20pub use dynamic::*;21use error::{Error::*, LocError, Result, StackTraceElement};22pub use evaluate::*;23pub use function::parse_function_call;24pub use import::*;25use jrsonnet_parser::*;26use native::NativeCallback;27pub use obj::*;28use std::{29 cell::{Ref, RefCell, RefMut},30 collections::HashMap,31 fmt::Debug,32 path::PathBuf,33 rc::Rc,34};35use trace::{offset_to_location, CodeLocation, CompactFormat, TraceFormat};36pub use val::*;3738type BindableFn = dyn Fn(Option<ObjValue>, Option<ObjValue>) -> Result<LazyVal>;39#[derive(Clone)]40pub enum LazyBinding {41 Bindable(Rc<BindableFn>),42 Bound(LazyVal),43}4445impl Debug for LazyBinding {46 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {47 write!(f, "LazyBinding")48 }49}50impl LazyBinding {51 pub fn evaluate(&self, this: Option<ObjValue>, super_obj: Option<ObjValue>) -> Result<LazyVal> {52 match self {53 Self::Bindable(v) => v(this, super_obj),54 Self::Bound(v) => Ok(v.clone()),55 }56 }57}5859pub struct EvaluationSettings {60 61 pub max_stack: usize,62 63 pub max_trace: usize,64 65 pub ext_vars: HashMap<Rc<str>, Val>,66 67 pub ext_natives: HashMap<Rc<str>, Rc<NativeCallback>>,68 69 pub tla_vars: HashMap<Rc<str>, Val>,70 71 pub globals: HashMap<Rc<str>, Val>,72 73 pub import_resolver: Box<dyn ImportResolver>,74 75 pub manifest_format: ManifestFormat,76 77 pub trace_format: Box<dyn TraceFormat>,78}79impl Default for EvaluationSettings {80 fn default() -> Self {81 Self {82 max_stack: 200,83 max_trace: 20,84 globals: Default::default(),85 ext_vars: Default::default(),86 ext_natives: Default::default(),87 tla_vars: Default::default(),88 import_resolver: Box::new(DummyImportResolver),89 manifest_format: ManifestFormat::Json(4),90 trace_format: Box::new(CompactFormat {91 padding: 4,92 resolver: trace::PathResolver::Absolute,93 }),94 }95 }96}9798#[derive(Default)]99struct EvaluationData {100 101 stack_depth: usize,102 103 files: HashMap<Rc<PathBuf>, FileData>,104 str_files: HashMap<Rc<PathBuf>, Rc<str>>,105}106107pub struct FileData {108 source_code: Rc<str>,109 parsed: LocExpr,110 evaluated: Option<Val>,111}112#[derive(Default)]113pub struct EvaluationStateInternals {114 115 data: RefCell<EvaluationData>,116 117 settings: RefCell<EvaluationSettings>,118}119120thread_local! {121 122 123 pub(crate) static EVAL_STATE: RefCell<Option<EvaluationState>> = RefCell::new(None)124}125pub(crate) fn with_state<T>(f: impl FnOnce(&EvaluationState) -> T) -> T {126 EVAL_STATE.with(|s| f(s.borrow().as_ref().unwrap()))127}128pub(crate) fn push<T>(129 e: &Option<ExprLocation>,130 frame_desc: impl FnOnce() -> String,131 f: impl FnOnce() -> Result<T>,132) -> Result<T> {133 if let Some(v) = e {134 with_state(|s| s.push(v, frame_desc, f))135 } else {136 f()137 }138}139140141#[derive(Default, Clone)]142pub struct EvaluationState(Rc<EvaluationStateInternals>);143144impl EvaluationState {145 146 pub fn add_file(&self, path: Rc<PathBuf>, source_code: Rc<str>) -> Result<()> {147 self.add_parsed_file(148 path.clone(),149 source_code.clone(),150 parse(151 &source_code,152 &ParserSettings {153 file_name: path.clone(),154 loc_data: true,155 },156 )157 .map_err(|error| ImportSyntaxError {158 error: Box::new(error),159 path,160 source_code,161 })?,162 )?;163164 Ok(())165 }166167 168 pub fn add_parsed_file(169 &self,170 name: Rc<PathBuf>,171 source_code: Rc<str>,172 parsed: LocExpr,173 ) -> Result<()> {174 self.data_mut().files.insert(175 name,176 FileData {177 source_code,178 parsed,179 evaluated: None,180 },181 );182183 Ok(())184 }185 pub fn get_source(&self, name: &PathBuf) -> Option<Rc<str>> {186 let ro_map = &self.data().files;187 ro_map.get(name).map(|value| value.source_code.clone())188 }189 pub fn map_source_locations(&self, file: &PathBuf, locs: &[usize]) -> Vec<CodeLocation> {190 offset_to_location(&self.get_source(file).unwrap(), locs)191 }192193 pub(crate) fn import_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Val> {194 let file_path = self.resolve_file(from, path)?;195 {196 let files = &self.data().files;197 if files.contains_key(&file_path) {198 return self.evaluate_loaded_file_raw(&file_path);199 }200 }201 let contents = self.load_file_contents(&file_path)?;202 self.add_file(file_path.clone(), contents)?;203 self.evaluate_loaded_file_raw(&file_path)204 }205 pub(crate) fn import_file_str(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<str>> {206 let path = self.resolve_file(from, path)?;207 if !self.data().str_files.contains_key(&path) {208 let file_str = self.load_file_contents(&path)?;209 self.data_mut().str_files.insert(path.clone(), file_str);210 }211 Ok(self.data().str_files.get(&path).cloned().unwrap())212 }213214 fn evaluate_loaded_file_raw(&self, name: &PathBuf) -> Result<Val> {215 let expr: LocExpr = {216 let ro_map = &self.data().files;217 let value = ro_map218 .get(name)219 .unwrap_or_else(|| panic!("file not added: {:?}", name));220 if let Some(ref evaluated) = value.evaluated {221 return Ok(evaluated.clone());222 }223 value.parsed.clone()224 };225 let value = evaluate(self.create_default_context()?, &expr)?;226 {227 self.data_mut()228 .files229 .get_mut(name)230 .unwrap()231 .evaluated232 .replace(value.clone());233 }234 Ok(value)235 }236237 238 pub fn with_stdlib(&self) -> &Self {239 use jrsonnet_stdlib::STDLIB_STR;240 let std_path = Rc::new(PathBuf::from("std.jsonnet"));241 self.run_in_state(|| {242 self.add_parsed_file(243 std_path.clone(),244 STDLIB_STR.to_owned().into(),245 builtin::get_parsed_stdlib(),246 )247 .unwrap();248 let val = self.evaluate_loaded_file_raw(&std_path).unwrap();249 self.settings_mut().globals.insert("std".into(), val);250 });251 self252 }253254 255 pub fn create_default_context(&self) -> Result<Context> {256 let globals = &self.settings().globals;257 let mut new_bindings: HashMap<Rc<str>, LazyBinding> = HashMap::new();258 for (name, value) in globals.iter() {259 new_bindings.insert(260 name.clone(),261 LazyBinding::Bound(resolved_lazy_val!(value.clone())),262 );263 }264 Context::new().extend_unbound(new_bindings, None, None, None)265 }266267 268 pub fn push<T>(269 &self,270 e: &ExprLocation,271 frame_desc: impl FnOnce() -> String,272 f: impl FnOnce() -> Result<T>,273 ) -> Result<T> {274 {275 let mut data = self.data_mut();276 let stack_depth = &mut data.stack_depth;277 if *stack_depth > self.max_stack() {278 279 drop(data);280 throw!(StackOverflow);281 } else {282 *stack_depth += 1;283 }284 }285 let result = f();286 self.data_mut().stack_depth -= 1;287 if let Err(mut err) = result {288 err.trace_mut().0.push(StackTraceElement {289 location: e.clone(),290 desc: frame_desc(),291 });292 return Err(err);293 }294 result295 }296297 298 pub fn run_in_state<T>(&self, f: impl FnOnce() -> T) -> T {299 EVAL_STATE.with(|v| {300 let has_state = v.borrow().is_some();301 if !has_state {302 v.borrow_mut().replace(self.clone());303 }304 let result = f();305 if !has_state {306 v.borrow_mut().take();307 }308 result309 })310 }311312 pub fn stringify_err(&self, e: &LocError) -> String {313 let mut out = String::new();314 self.settings()315 .trace_format316 .write_trace(&mut out, self, e)317 .unwrap();318 out319 }320321 pub fn manifest(&self, val: Val) -> Result<Rc<str>> {322 self.run_in_state(|| val.manifest(&self.manifest_format()))323 }324 pub fn manifest_multi(&self, val: Val) -> Result<Vec<(Rc<str>, Rc<str>)>> {325 self.run_in_state(|| val.manifest_multi(&self.manifest_format()))326 }327 pub fn manifest_stream(&self, val: Val) -> Result<Vec<Rc<str>>> {328 self.run_in_state(|| val.manifest_stream(&self.manifest_format()))329 }330331 332 pub fn with_tla(&self, val: Val) -> Result<Val> {333 self.run_in_state(|| {334 Ok(match val {335 Val::Func(func) => func.evaluate_map(336 self.create_default_context()?,337 &self.settings().tla_vars,338 true,339 )?,340 v => v,341 })342 })343 }344}345346347impl EvaluationState {348 fn data(&self) -> Ref<EvaluationData> {349 self.0.data.borrow()350 }351 fn data_mut(&self) -> RefMut<EvaluationData> {352 self.0.data.borrow_mut()353 }354 pub fn settings(&self) -> Ref<EvaluationSettings> {355 self.0.settings.borrow()356 }357 pub fn settings_mut(&self) -> RefMut<EvaluationSettings> {358 self.0.settings.borrow_mut()359 }360}361362363impl EvaluationState {364 pub fn evaluate_file_raw(&self, name: &PathBuf) -> Result<Val> {365 self.run_in_state(|| self.import_file(&std::env::current_dir().expect("cwd"), name))366 }367 pub fn evaluate_file_raw_nocwd(&self, name: &PathBuf) -> Result<Val> {368 self.run_in_state(|| self.import_file(&PathBuf::from("."), name))369 }370 371 pub fn evaluate_snippet_raw(&self, source: Rc<PathBuf>, code: Rc<str>) -> Result<Val> {372 let parsed = parse(373 &code,374 &ParserSettings {375 file_name: source.clone(),376 loc_data: true,377 },378 )379 .unwrap();380 self.add_parsed_file(source, code, parsed.clone())?;381 self.evaluate_expr_raw(parsed)382 }383 384 pub fn evaluate_expr_raw(&self, code: LocExpr) -> Result<Val> {385 self.run_in_state(|| evaluate(self.create_default_context()?, &code))386 }387}388389390impl EvaluationState {391 pub fn add_ext_var(&self, name: Rc<str>, value: Val) {392 self.settings_mut().ext_vars.insert(name, value);393 }394 pub fn add_ext_str(&self, name: Rc<str>, value: Rc<str>) {395 self.add_ext_var(name, Val::Str(value));396 }397 pub fn add_ext_code(&self, name: Rc<str>, code: Rc<str>) -> Result<()> {398 let value =399 self.evaluate_snippet_raw(Rc::new(PathBuf::from(format!("ext_code {}", name))), code)?;400 self.add_ext_var(name, value);401 Ok(())402 }403404 pub fn add_tla(&self, name: Rc<str>, value: Val) {405 self.settings_mut().tla_vars.insert(name, value);406 }407 pub fn add_tla_str(&self, name: Rc<str>, value: Rc<str>) {408 self.add_tla(name, Val::Str(value));409 }410 pub fn add_tla_code(&self, name: Rc<str>, code: Rc<str>) -> Result<()> {411 let value =412 self.evaluate_snippet_raw(Rc::new(PathBuf::from(format!("tla_code {}", name))), code)?;413 self.add_tla(name, value);414 Ok(())415 }416417 pub fn resolve_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<PathBuf>> {418 Ok(self.settings().import_resolver.resolve_file(from, path)?)419 }420 pub fn load_file_contents(&self, path: &PathBuf) -> Result<Rc<str>> {421 Ok(self.settings().import_resolver.load_file_contents(path)?)422 }423424 pub fn import_resolver(&self) -> Ref<dyn ImportResolver> {425 Ref::map(self.settings(), |s| &*s.import_resolver)426 }427 pub fn set_import_resolver(&self, resolver: Box<dyn ImportResolver>) {428 self.settings_mut().import_resolver = resolver;429 }430431 pub fn add_native(&self, name: Rc<str>, cb: Rc<NativeCallback>) {432 self.settings_mut().ext_natives.insert(name, cb);433 }434435 pub fn manifest_format(&self) -> ManifestFormat {436 self.settings().manifest_format.clone()437 }438 pub fn set_manifest_format(&self, format: ManifestFormat) {439 self.settings_mut().manifest_format = format;440 }441442 pub fn trace_format(&self) -> Ref<dyn TraceFormat> {443 Ref::map(self.settings(), |s| &*s.trace_format)444 }445 pub fn set_trace_format(&self, format: Box<dyn TraceFormat>) {446 self.settings_mut().trace_format = format;447 }448449 pub fn max_trace(&self) -> usize {450 self.settings().max_trace451 }452 pub fn set_max_trace(&self, trace: usize) {453 self.settings_mut().max_trace = trace;454 }455456 pub fn max_stack(&self) -> usize {457 self.settings().max_stack458 }459 pub fn set_max_stack(&self, trace: usize) {460 self.settings_mut().max_stack = trace;461 }462}463464#[cfg(test)]465pub mod tests {466 use super::Val;467 use crate::{error::Error::*, primitive_equals, EvaluationState};468 use jrsonnet_parser::*;469 use std::{path::PathBuf, rc::Rc};470471 #[test]472 #[should_panic]473 fn eval_state_stacktrace() {474 let state = EvaluationState::default();475 state.run_in_state(|| {476 state477 .push(478 &ExprLocation(Rc::new(PathBuf::from("test1.jsonnet")), 10, 20),479 || "outer".to_owned(),480 || {481 state.push(482 &ExprLocation(Rc::new(PathBuf::from("test2.jsonnet")), 30, 40),483 || "inner".to_owned(),484 || Err(RuntimeError("".into()).into()),485 )?;486 Ok(())487 },488 )489 .unwrap();490 });491 }492493 #[test]494 fn eval_state_standard() {495 let state = EvaluationState::default();496 state.with_stdlib();497 assert!(primitive_equals(498 &state499 .evaluate_snippet_raw(500 Rc::new(PathBuf::from("raw.jsonnet")),501 r#"std.assertEqual(std.base64("test"), "dGVzdA==")"#.into()502 )503 .unwrap(),504 &Val::Bool(true),505 )506 .unwrap());507 }508509 macro_rules! eval {510 ($str: expr) => {511 EvaluationState::default()512 .with_stdlib()513 .evaluate_snippet_raw(Rc::new(PathBuf::from("raw.jsonnet")), $str.into())514 .unwrap()515 };516 }517 macro_rules! eval_json {518 ($str: expr) => {{519 let evaluator = EvaluationState::default();520 evaluator.with_stdlib();521 evaluator.run_in_state(|| {522 evaluator523 .evaluate_snippet_raw(Rc::new(PathBuf::from("raw.jsonnet")), $str.into())524 .unwrap()525 .to_json(0)526 .unwrap()527 .replace("\n", "")528 })529 }};530 }531532 533 macro_rules! assert_eval {534 ($str: expr) => {535 assert!(primitive_equals(&eval!($str), &Val::Bool(true)).unwrap())536 };537 }538539 540 macro_rules! assert_eval_neg {541 ($str: expr) => {542 assert!(primitive_equals(&eval!($str), &Val::Bool(false)).unwrap())543 };544 }545 macro_rules! assert_json {546 ($str: expr, $out: expr) => {547 assert_eq!(eval_json!($str), $out.replace("\t", ""))548 };549 }550551 552 #[test]553 fn equality_operator() {554 assert_eval!("2 == 2");555 assert_eval_neg!("2 != 2");556 assert_eval!("2 != 3");557 assert_eval_neg!("2 == 3");558 assert_eval!("'Hello' == 'Hello'");559 assert_eval_neg!("'Hello' != 'Hello'");560 assert_eval!("'Hello' != 'World'");561 assert_eval_neg!("'Hello' == 'World'");562 }563564 #[test]565 fn math_evaluation() {566 assert_eval!("2 + 2 * 2 == 6");567 assert_eval!("3 + (2 + 2 * 2) == 9");568 }569570 #[test]571 fn string_concat() {572 assert_eval!("'Hello' + 'World' == 'HelloWorld'");573 assert_eval!("'Hello' * 3 == 'HelloHelloHello'");574 assert_eval!("'Hello' + 'World' * 3 == 'HelloWorldWorldWorld'");575 }576577 #[test]578 fn faster_join() {579 assert_eval!("std.join([0,0], [[1,2],[3,4],[5,6]]) == [1,2,0,0,3,4,0,0,5,6]");580 assert_eval!("std.join(',', ['1','2','3','4']) == '1,2,3,4'");581 }582583 #[test]584 fn function_contexts() {585 assert_eval!(586 r#"587 local k = {588 t(name = self.h): [self.h, name],589 h: 3,590 };591 local f = {592 t: k.t(),593 h: 4,594 };595 f.t[0] == f.t[1]596 "#597 );598 }599600 #[test]601 fn local() {602 assert_eval!("local a = 2; local b = 3; a + b == 5");603 assert_eval!("local a = 1, b = a + 1; a + b == 3");604 assert_eval!("local a = 1; local a = 2; a == 2");605 }606607 #[test]608 fn object_lazyness() {609 assert_json!("local a = {a:error 'test'}; {}", r#"{}"#);610 }611612 #[test]613 fn object_inheritance() {614 assert_json!("{a: self.b} + {b:3}", r#"{"a": 3,"b": 3}"#);615 }616617 #[test]618 fn object_assertion_success() {619 eval!("{assert \"a\" in self} + {a:2}");620 }621622 #[test]623 fn object_assertion_error() {624 eval!("{assert \"a\" in self}");625 }626627 #[test]628 fn lazy_args() {629 eval!("local test(a) = 2; test(error '3')");630 }631632 #[test]633 #[should_panic]634 fn tailstrict_args() {635 eval!("local test(a) = 2; test(error '3') tailstrict");636 }637638 #[test]639 #[should_panic]640 fn no_binding_error() {641 eval!("a");642 }643644 #[test]645 fn test_object() {646 assert_json!("{a:2}", r#"{"a": 2}"#);647 assert_json!("{a:2+2}", r#"{"a": 4}"#);648 assert_json!("{a:2}+{b:2}", r#"{"a": 2,"b": 2}"#);649 assert_json!("{b:3}+{b:2}", r#"{"b": 2}"#);650 assert_json!("{b:3}+{b+:2}", r#"{"b": 5}"#);651 assert_json!("local test='a'; {[test]:2}", r#"{"a": 2}"#);652 assert_json!(653 r#"654 {655 name: "Alice",656 welcome: "Hello " + self.name + "!",657 }658 "#,659 r#"{"name": "Alice","welcome": "Hello Alice!"}"#660 );661 assert_json!(662 r#"663 {664 name: "Alice",665 welcome: "Hello " + self.name + "!",666 } + {667 name: "Bob"668 }669 "#,670 r#"{"name": "Bob","welcome": "Hello Bob!"}"#671 );672 }673674 #[test]675 fn functions() {676 assert_json!(r#"local a = function(b, c = 2) b + c; a(2)"#, "4");677 assert_json!(678 r#"local a = function(b, c = "Dear") b + c + d, d = "World"; a("Hello")"#,679 r#""HelloDearWorld""#680 );681 }682683 #[test]684 fn local_methods() {685 assert_json!(r#"local a(b, c = 2) = b + c; a(2)"#, "4");686 assert_json!(687 r#"local a(b, c = "Dear") = b + c + d, d = "World"; a("Hello")"#,688 r#""HelloDearWorld""#689 );690 }691692 #[test]693 fn object_locals() {694 assert_json!(r#"{local a = 3, b: a}"#, r#"{"b": 3}"#);695 assert_json!(r#"{local a = 3, local c = a, b: c}"#, r#"{"b": 3}"#);696 assert_json!(697 r#"{local a = function (b) {[b]:4}, test: a("test")}"#,698 r#"{"test": {"test": 4}}"#699 );700 }701702 #[test]703 fn object_comp() {704 assert_json!(705 r#"{local t = "a", ["h"+i+"_"+z]: if "h"+(i-1)+"_"+z in self then t+1 else 0+t for i in [1,2,3] for z in [2,3,4] if z != i}"#,706 "{\"h1_2\": \"0a\",\"h1_3\": \"0a\",\"h1_4\": \"0a\",\"h2_3\": \"a1\",\"h2_4\": \"a1\",\"h3_2\": \"0a\",\"h3_4\": \"a1\"}"707 )708 }709710 #[test]711 fn direct_self() {712 println!(713 "{:#?}",714 eval!(715 r#"716 {717 local me = self,718 a: 3,719 b(): me.a,720 }721 "#722 )723 );724 }725726 #[test]727 fn indirect_self() {728 729 730 eval!(731 r#"{732 local me = self,733 a: 3,734 b: me.a,735 }.b"#736 );737 }738739 740 #[test]741 fn std_assert_ok() {742 eval!("std.assertEqual(4.5 << 2, 16)");743 }744745 #[test]746 #[should_panic]747 fn std_assert_failure() {748 eval!("std.assertEqual(4.5 << 2, 15)");749 }750751 #[test]752 fn string_is_string() {753 assert!(primitive_equals(754 &eval!("local arr = 'hello'; (!std.isArray(arr)) && (!std.isString(arr))"),755 &Val::Bool(false),756 )757 .unwrap());758 }759760 #[test]761 fn base64_works() {762 assert_json!(r#"std.base64("test")"#, r#""dGVzdA==""#);763 }764765 #[test]766 fn utf8_chars() {767 assert_json!(768 r#"local c="😎";{c:std.codepoint(c),l:std.length(c)}"#,769 r#"{"c": 128526,"l": 1}"#770 )771 }772773 #[test]774 fn json() {775 assert_json!(776 r#"std.manifestJsonEx({a:3, b:4, c:6},"")"#,777 r#""{\n\"a\": 3,\n\"b\": 4,\n\"c\": 6\n}""#778 );779 }780781 #[test]782 fn test() {783 assert_json!(784 r#"[[a, b] for a in [1,2,3] for b in [4,5,6]]"#,785 "[[1,4],[1,5],[1,6],[2,4],[2,5],[2,6],[3,4],[3,5],[3,6]]"786 );787 }788789 #[test]790 fn sjsonnet() {791 eval!(792 r#"793 local x0 = {k: 1};794 local x1 = {k: x0.k + x0.k};795 local x2 = {k: x1.k + x1.k};796 local x3 = {k: x2.k + x2.k};797 local x4 = {k: x3.k + x3.k};798 local x5 = {k: x4.k + x4.k};799 local x6 = {k: x5.k + x5.k};800 local x7 = {k: x6.k + x6.k};801 local x8 = {k: x7.k + x7.k};802 local x9 = {k: x8.k + x8.k};803 local x10 = {k: x9.k + x9.k};804 local x11 = {k: x10.k + x10.k};805 local x12 = {k: x11.k + x11.k};806 local x13 = {k: x12.k + x12.k};807 local x14 = {k: x13.k + x13.k};808 local x15 = {k: x14.k + x14.k};809 local x16 = {k: x15.k + x15.k};810 local x17 = {k: x16.k + x16.k};811 local x18 = {k: x17.k + x17.k};812 local x19 = {k: x18.k + x18.k};813 local x20 = {k: x19.k + x19.k};814 local x21 = {k: x20.k + x20.k};815 x21.k816 "#817 );818 }819820 821 822 823 824 825 826 827 828 829 830 831 832833 834835836837838839840841842843844845846847848849850851852853854855856857858859 #[test]860 fn equality() {861 println!(862 "{:?}",863 jrsonnet_parser::parse(864 "{ x: 1, y: 2 } == { x: 1, y: 2 }",865 &ParserSettings::default()866 )867 );868 assert_eval!("{ x: 1, y: 2 } == { x: 1, y: 2 }")869 }870871 #[test]872 fn native_ext() -> crate::error::Result<()> {873 use super::native::NativeCallback;874 let evaluator = EvaluationState::default();875876 evaluator.with_stdlib();877 evaluator.settings_mut().ext_natives.insert(878 "native_add".into(),879 Rc::new(NativeCallback::new(880 ParamsDesc(Rc::new(vec![881 Param("a".into(), None),882 Param("b".into(), None),883 ])),884 |args| match (&args[0], &args[1]) {885 (Val::Num(a), Val::Num(b)) => Ok(Val::Num(a + b)),886 (_, _) => todo!(),887 },888 )),889 );890 evaluator.evaluate_snippet_raw(891 Rc::new(PathBuf::from("test.jsonnet")),892 "std.assertEqual(std.native(\"native_add\")(1, 2), 3)".into(),893 )?;894 Ok(())895 }896897 #[test]898 fn constant_intrinsic() -> crate::error::Result<()> {899 assert_eval!(900 "local std2 = std; local std = std2 { primitiveEquals(a, b):: false }; 1 == 1"901 );902 Ok(())903 }904}