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 typed;18mod val;1920pub use ctx::*;21pub use dynamic::*;22use error::{Error::*, LocError, Result, StackTraceElement};23pub use evaluate::*;24pub use function::parse_function_call;25pub use import::*;26use jrsonnet_parser::*;27use native::NativeCallback;28pub use obj::*;29use std::{30 cell::{Ref, RefCell, RefMut},31 collections::HashMap,32 fmt::Debug,33 path::PathBuf,34 rc::Rc,35};36use trace::{offset_to_location, CodeLocation, CompactFormat, TraceFormat};37pub use val::*;3839type BindableFn = dyn Fn(Option<ObjValue>, Option<ObjValue>) -> Result<LazyVal>;40#[derive(Clone)]41pub enum LazyBinding {42 Bindable(Rc<BindableFn>),43 Bound(LazyVal),44}4546impl Debug for LazyBinding {47 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {48 write!(f, "LazyBinding")49 }50}51impl LazyBinding {52 pub fn evaluate(&self, this: Option<ObjValue>, super_obj: Option<ObjValue>) -> Result<LazyVal> {53 match self {54 Self::Bindable(v) => v(this, super_obj),55 Self::Bound(v) => Ok(v.clone()),56 }57 }58}5960pub struct EvaluationSettings {61 62 pub max_stack: usize,63 64 pub max_trace: usize,65 66 pub ext_vars: HashMap<Rc<str>, Val>,67 68 pub ext_natives: HashMap<Rc<str>, Rc<NativeCallback>>,69 70 pub tla_vars: HashMap<Rc<str>, Val>,71 72 pub globals: HashMap<Rc<str>, Val>,73 74 pub import_resolver: Box<dyn ImportResolver>,75 76 pub manifest_format: ManifestFormat,77 78 pub trace_format: Box<dyn TraceFormat>,79}80impl Default for EvaluationSettings {81 fn default() -> Self {82 Self {83 max_stack: 200,84 max_trace: 20,85 globals: Default::default(),86 ext_vars: Default::default(),87 ext_natives: Default::default(),88 tla_vars: Default::default(),89 import_resolver: Box::new(DummyImportResolver),90 manifest_format: ManifestFormat::Json(4),91 trace_format: Box::new(CompactFormat {92 padding: 4,93 resolver: trace::PathResolver::Absolute,94 }),95 }96 }97}9899#[derive(Default)]100struct EvaluationData {101 102 stack_depth: usize,103 104 files: HashMap<Rc<PathBuf>, FileData>,105 str_files: HashMap<Rc<PathBuf>, Rc<str>>,106}107108pub struct FileData {109 source_code: Rc<str>,110 parsed: LocExpr,111 evaluated: Option<Val>,112}113#[derive(Default)]114pub struct EvaluationStateInternals {115 116 data: RefCell<EvaluationData>,117 118 settings: RefCell<EvaluationSettings>,119}120121thread_local! {122 123 124 pub(crate) static EVAL_STATE: RefCell<Option<EvaluationState>> = RefCell::new(None)125}126pub(crate) fn with_state<T>(f: impl FnOnce(&EvaluationState) -> T) -> T {127 EVAL_STATE.with(|s| f(s.borrow().as_ref().unwrap()))128}129pub(crate) fn push<T>(130 e: &Option<ExprLocation>,131 frame_desc: impl FnOnce() -> String,132 f: impl FnOnce() -> Result<T>,133) -> Result<T> {134 if let Some(v) = e {135 with_state(|s| s.push(v, frame_desc, f))136 } else {137 f()138 }139}140141142#[derive(Default, Clone)]143pub struct EvaluationState(Rc<EvaluationStateInternals>);144145impl EvaluationState {146 147 pub fn add_file(&self, path: Rc<PathBuf>, source_code: Rc<str>) -> Result<()> {148 self.add_parsed_file(149 path.clone(),150 source_code.clone(),151 parse(152 &source_code,153 &ParserSettings {154 file_name: path.clone(),155 loc_data: true,156 },157 )158 .map_err(|error| ImportSyntaxError {159 error: Box::new(error),160 path,161 source_code,162 })?,163 )?;164165 Ok(())166 }167168 169 pub fn add_parsed_file(170 &self,171 name: Rc<PathBuf>,172 source_code: Rc<str>,173 parsed: LocExpr,174 ) -> Result<()> {175 self.data_mut().files.insert(176 name,177 FileData {178 source_code,179 parsed,180 evaluated: None,181 },182 );183184 Ok(())185 }186 pub fn get_source(&self, name: &PathBuf) -> Option<Rc<str>> {187 let ro_map = &self.data().files;188 ro_map.get(name).map(|value| value.source_code.clone())189 }190 pub fn map_source_locations(&self, file: &PathBuf, locs: &[usize]) -> Vec<CodeLocation> {191 offset_to_location(&self.get_source(file).unwrap(), locs)192 }193194 pub(crate) fn import_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Val> {195 let file_path = self.resolve_file(from, path)?;196 {197 let data = self.data();198 let files = &data.files;199 if files.contains_key(&file_path) {200 drop(data);201 return self.evaluate_loaded_file_raw(&file_path);202 }203 }204 let contents = self.load_file_contents(&file_path)?;205 self.add_file(file_path.clone(), contents)?;206 self.evaluate_loaded_file_raw(&file_path)207 }208 pub(crate) fn import_file_str(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<str>> {209 let path = self.resolve_file(from, path)?;210 if !self.data().str_files.contains_key(&path) {211 let file_str = self.load_file_contents(&path)?;212 self.data_mut().str_files.insert(path.clone(), file_str);213 }214 Ok(self.data().str_files.get(&path).cloned().unwrap())215 }216217 fn evaluate_loaded_file_raw(&self, name: &PathBuf) -> Result<Val> {218 let expr: LocExpr = {219 let ro_map = &self.data().files;220 let value = ro_map221 .get(name)222 .unwrap_or_else(|| panic!("file not added: {:?}", name));223 if let Some(ref evaluated) = value.evaluated {224 return Ok(evaluated.clone());225 }226 value.parsed.clone()227 };228 let value = evaluate(self.create_default_context()?, &expr)?;229 {230 self.data_mut()231 .files232 .get_mut(name)233 .unwrap()234 .evaluated235 .replace(value.clone());236 }237 Ok(value)238 }239240 241 pub fn with_stdlib(&self) -> &Self {242 use jrsonnet_stdlib::STDLIB_STR;243 let std_path = Rc::new(PathBuf::from("std.jsonnet"));244 self.run_in_state(|| {245 self.add_parsed_file(246 std_path.clone(),247 STDLIB_STR.to_owned().into(),248 builtin::get_parsed_stdlib(),249 )250 .unwrap();251 let val = self.evaluate_loaded_file_raw(&std_path).unwrap();252 self.settings_mut().globals.insert("std".into(), val);253 });254 self255 }256257 258 pub fn create_default_context(&self) -> Result<Context> {259 let globals = &self.settings().globals;260 let mut new_bindings: HashMap<Rc<str>, LazyBinding> = HashMap::new();261 for (name, value) in globals.iter() {262 new_bindings.insert(263 name.clone(),264 LazyBinding::Bound(resolved_lazy_val!(value.clone())),265 );266 }267 Context::new().extend_unbound(new_bindings, None, None, None)268 }269270 271 pub fn push<T>(272 &self,273 e: &ExprLocation,274 frame_desc: impl FnOnce() -> String,275 f: impl FnOnce() -> Result<T>,276 ) -> Result<T> {277 {278 let mut data = self.data_mut();279 let stack_depth = &mut data.stack_depth;280 if *stack_depth > self.max_stack() {281 282 drop(data);283 throw!(StackOverflow);284 } else {285 *stack_depth += 1;286 }287 }288 let result = f();289 self.data_mut().stack_depth -= 1;290 if let Err(mut err) = result {291 err.trace_mut().0.push(StackTraceElement {292 location: e.clone(),293 desc: frame_desc(),294 });295 return Err(err);296 }297 result298 }299300 301 pub fn run_in_state<T>(&self, f: impl FnOnce() -> T) -> T {302 EVAL_STATE.with(|v| {303 let has_state = v.borrow().is_some();304 if !has_state {305 v.borrow_mut().replace(self.clone());306 }307 let result = f();308 if !has_state {309 v.borrow_mut().take();310 }311 result312 })313 }314315 pub fn stringify_err(&self, e: &LocError) -> String {316 let mut out = String::new();317 self.settings()318 .trace_format319 .write_trace(&mut out, self, e)320 .unwrap();321 out322 }323324 pub fn manifest(&self, val: Val) -> Result<Rc<str>> {325 self.run_in_state(|| val.manifest(&self.manifest_format()))326 }327 pub fn manifest_multi(&self, val: Val) -> Result<Vec<(Rc<str>, Rc<str>)>> {328 self.run_in_state(|| val.manifest_multi(&self.manifest_format()))329 }330 pub fn manifest_stream(&self, val: Val) -> Result<Vec<Rc<str>>> {331 self.run_in_state(|| val.manifest_stream(&self.manifest_format()))332 }333334 335 pub fn with_tla(&self, val: Val) -> Result<Val> {336 self.run_in_state(|| {337 Ok(match val {338 Val::Func(func) => func.evaluate_map(339 self.create_default_context()?,340 &self.settings().tla_vars,341 true,342 )?,343 v => v,344 })345 })346 }347}348349350impl EvaluationState {351 fn data(&self) -> Ref<EvaluationData> {352 self.0.data.borrow()353 }354 fn data_mut(&self) -> RefMut<EvaluationData> {355 self.0.data.borrow_mut()356 }357 pub fn settings(&self) -> Ref<EvaluationSettings> {358 self.0.settings.borrow()359 }360 pub fn settings_mut(&self) -> RefMut<EvaluationSettings> {361 self.0.settings.borrow_mut()362 }363}364365366impl EvaluationState {367 pub fn evaluate_file_raw(&self, name: &PathBuf) -> Result<Val> {368 self.run_in_state(|| self.import_file(&std::env::current_dir().expect("cwd"), name))369 }370 pub fn evaluate_file_raw_nocwd(&self, name: &PathBuf) -> Result<Val> {371 self.run_in_state(|| self.import_file(&PathBuf::from("."), name))372 }373 374 pub fn evaluate_snippet_raw(&self, source: Rc<PathBuf>, code: Rc<str>) -> Result<Val> {375 let parsed = parse(376 &code,377 &ParserSettings {378 file_name: source.clone(),379 loc_data: true,380 },381 )382 .unwrap();383 self.add_parsed_file(source, code, parsed.clone())?;384 self.evaluate_expr_raw(parsed)385 }386 387 pub fn evaluate_expr_raw(&self, code: LocExpr) -> Result<Val> {388 self.run_in_state(|| evaluate(self.create_default_context()?, &code))389 }390}391392393impl EvaluationState {394 pub fn add_ext_var(&self, name: Rc<str>, value: Val) {395 self.settings_mut().ext_vars.insert(name, value);396 }397 pub fn add_ext_str(&self, name: Rc<str>, value: Rc<str>) {398 self.add_ext_var(name, Val::Str(value));399 }400 pub fn add_ext_code(&self, name: Rc<str>, code: Rc<str>) -> Result<()> {401 let value =402 self.evaluate_snippet_raw(Rc::new(PathBuf::from(format!("ext_code {}", name))), code)?;403 self.add_ext_var(name, value);404 Ok(())405 }406407 pub fn add_tla(&self, name: Rc<str>, value: Val) {408 self.settings_mut().tla_vars.insert(name, value);409 }410 pub fn add_tla_str(&self, name: Rc<str>, value: Rc<str>) {411 self.add_tla(name, Val::Str(value));412 }413 pub fn add_tla_code(&self, name: Rc<str>, code: Rc<str>) -> Result<()> {414 let value =415 self.evaluate_snippet_raw(Rc::new(PathBuf::from(format!("tla_code {}", name))), code)?;416 self.add_tla(name, value);417 Ok(())418 }419420 pub fn resolve_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<PathBuf>> {421 Ok(self.settings().import_resolver.resolve_file(from, path)?)422 }423 pub fn load_file_contents(&self, path: &PathBuf) -> Result<Rc<str>> {424 Ok(self.settings().import_resolver.load_file_contents(path)?)425 }426427 pub fn import_resolver(&self) -> Ref<dyn ImportResolver> {428 Ref::map(self.settings(), |s| &*s.import_resolver)429 }430 pub fn set_import_resolver(&self, resolver: Box<dyn ImportResolver>) {431 self.settings_mut().import_resolver = resolver;432 }433434 pub fn add_native(&self, name: Rc<str>, cb: Rc<NativeCallback>) {435 self.settings_mut().ext_natives.insert(name, cb);436 }437438 pub fn manifest_format(&self) -> ManifestFormat {439 self.settings().manifest_format.clone()440 }441 pub fn set_manifest_format(&self, format: ManifestFormat) {442 self.settings_mut().manifest_format = format;443 }444445 pub fn trace_format(&self) -> Ref<dyn TraceFormat> {446 Ref::map(self.settings(), |s| &*s.trace_format)447 }448 pub fn set_trace_format(&self, format: Box<dyn TraceFormat>) {449 self.settings_mut().trace_format = format;450 }451452 pub fn max_trace(&self) -> usize {453 self.settings().max_trace454 }455 pub fn set_max_trace(&self, trace: usize) {456 self.settings_mut().max_trace = trace;457 }458459 pub fn max_stack(&self) -> usize {460 self.settings().max_stack461 }462 pub fn set_max_stack(&self, trace: usize) {463 self.settings_mut().max_stack = trace;464 }465}466467#[cfg(test)]468pub mod tests {469 use super::Val;470 use crate::{error::Error::*, primitive_equals, EvaluationState};471 use jrsonnet_parser::*;472 use std::{path::PathBuf, rc::Rc};473474 #[test]475 #[should_panic]476 fn eval_state_stacktrace() {477 let state = EvaluationState::default();478 state.run_in_state(|| {479 state480 .push(481 &ExprLocation(Rc::new(PathBuf::from("test1.jsonnet")), 10, 20),482 || "outer".to_owned(),483 || {484 state.push(485 &ExprLocation(Rc::new(PathBuf::from("test2.jsonnet")), 30, 40),486 || "inner".to_owned(),487 || Err(RuntimeError("".into()).into()),488 )?;489 Ok(())490 },491 )492 .unwrap();493 });494 }495496 #[test]497 fn eval_state_standard() {498 let state = EvaluationState::default();499 state.with_stdlib();500 assert!(primitive_equals(501 &state502 .evaluate_snippet_raw(503 Rc::new(PathBuf::from("raw.jsonnet")),504 r#"std.assertEqual(std.base64("test"), "dGVzdA==")"#.into()505 )506 .unwrap(),507 &Val::Bool(true),508 )509 .unwrap());510 }511512 macro_rules! eval {513 ($str: expr) => {514 EvaluationState::default()515 .with_stdlib()516 .evaluate_snippet_raw(Rc::new(PathBuf::from("raw.jsonnet")), $str.into())517 .unwrap()518 };519 }520 macro_rules! eval_json {521 ($str: expr) => {{522 let evaluator = EvaluationState::default();523 evaluator.with_stdlib();524 evaluator.run_in_state(|| {525 evaluator526 .evaluate_snippet_raw(Rc::new(PathBuf::from("raw.jsonnet")), $str.into())527 .unwrap()528 .to_json(0)529 .unwrap()530 .replace("\n", "")531 })532 }};533 }534535 536 macro_rules! assert_eval {537 ($str: expr) => {538 assert!(primitive_equals(&eval!($str), &Val::Bool(true)).unwrap())539 };540 }541542 543 macro_rules! assert_eval_neg {544 ($str: expr) => {545 assert!(primitive_equals(&eval!($str), &Val::Bool(false)).unwrap())546 };547 }548 macro_rules! assert_json {549 ($str: expr, $out: expr) => {550 assert_eq!(eval_json!($str), $out.replace("\t", ""))551 };552 }553554 555 #[test]556 fn equality_operator() {557 assert_eval!("2 == 2");558 assert_eval_neg!("2 != 2");559 assert_eval!("2 != 3");560 assert_eval_neg!("2 == 3");561 assert_eval!("'Hello' == 'Hello'");562 assert_eval_neg!("'Hello' != 'Hello'");563 assert_eval!("'Hello' != 'World'");564 assert_eval_neg!("'Hello' == 'World'");565 }566567 #[test]568 fn math_evaluation() {569 assert_eval!("2 + 2 * 2 == 6");570 assert_eval!("3 + (2 + 2 * 2) == 9");571 }572573 #[test]574 fn string_concat() {575 assert_eval!("'Hello' + 'World' == 'HelloWorld'");576 assert_eval!("'Hello' * 3 == 'HelloHelloHello'");577 assert_eval!("'Hello' + 'World' * 3 == 'HelloWorldWorldWorld'");578 }579580 #[test]581 fn faster_join() {582 assert_eval!("std.join([0,0], [[1,2],[3,4],[5,6]]) == [1,2,0,0,3,4,0,0,5,6]");583 assert_eval!("std.join(',', ['1','2','3','4']) == '1,2,3,4'");584 }585586 #[test]587 fn function_contexts() {588 assert_eval!(589 r#"590 local k = {591 t(name = self.h): [self.h, name],592 h: 3,593 };594 local f = {595 t: k.t(),596 h: 4,597 };598 f.t[0] == f.t[1]599 "#600 );601 }602603 #[test]604 fn local() {605 assert_eval!("local a = 2; local b = 3; a + b == 5");606 assert_eval!("local a = 1, b = a + 1; a + b == 3");607 assert_eval!("local a = 1; local a = 2; a == 2");608 }609610 #[test]611 fn object_lazyness() {612 assert_json!("local a = {a:error 'test'}; {}", r#"{}"#);613 }614615 #[test]616 fn object_inheritance() {617 assert_json!("{a: self.b} + {b:3}", r#"{"a": 3,"b": 3}"#);618 }619620 #[test]621 fn object_assertion_success() {622 eval!("{assert \"a\" in self} + {a:2}");623 }624625 #[test]626 fn object_assertion_error() {627 eval!("{assert \"a\" in self}");628 }629630 #[test]631 fn lazy_args() {632 eval!("local test(a) = 2; test(error '3')");633 }634635 #[test]636 #[should_panic]637 fn tailstrict_args() {638 eval!("local test(a) = 2; test(error '3') tailstrict");639 }640641 #[test]642 #[should_panic]643 fn no_binding_error() {644 eval!("a");645 }646647 #[test]648 fn test_object() {649 assert_json!("{a:2}", r#"{"a": 2}"#);650 assert_json!("{a:2+2}", r#"{"a": 4}"#);651 assert_json!("{a:2}+{b:2}", r#"{"a": 2,"b": 2}"#);652 assert_json!("{b:3}+{b:2}", r#"{"b": 2}"#);653 assert_json!("{b:3}+{b+:2}", r#"{"b": 5}"#);654 assert_json!("local test='a'; {[test]:2}", r#"{"a": 2}"#);655 assert_json!(656 r#"657 {658 name: "Alice",659 welcome: "Hello " + self.name + "!",660 }661 "#,662 r#"{"name": "Alice","welcome": "Hello Alice!"}"#663 );664 assert_json!(665 r#"666 {667 name: "Alice",668 welcome: "Hello " + self.name + "!",669 } + {670 name: "Bob"671 }672 "#,673 r#"{"name": "Bob","welcome": "Hello Bob!"}"#674 );675 }676677 #[test]678 fn functions() {679 assert_json!(r#"local a = function(b, c = 2) b + c; a(2)"#, "4");680 assert_json!(681 r#"local a = function(b, c = "Dear") b + c + d, d = "World"; a("Hello")"#,682 r#""HelloDearWorld""#683 );684 }685686 #[test]687 fn local_methods() {688 assert_json!(r#"local a(b, c = 2) = b + c; a(2)"#, "4");689 assert_json!(690 r#"local a(b, c = "Dear") = b + c + d, d = "World"; a("Hello")"#,691 r#""HelloDearWorld""#692 );693 }694695 #[test]696 fn object_locals() {697 assert_json!(r#"{local a = 3, b: a}"#, r#"{"b": 3}"#);698 assert_json!(r#"{local a = 3, local c = a, b: c}"#, r#"{"b": 3}"#);699 assert_json!(700 r#"{local a = function (b) {[b]:4}, test: a("test")}"#,701 r#"{"test": {"test": 4}}"#702 );703 }704705 #[test]706 fn object_comp() {707 assert_json!(708 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}"#,709 "{\"h1_2\": \"0a\",\"h1_3\": \"0a\",\"h1_4\": \"0a\",\"h2_3\": \"a1\",\"h2_4\": \"a1\",\"h3_2\": \"0a\",\"h3_4\": \"a1\"}"710 )711 }712713 #[test]714 fn direct_self() {715 println!(716 "{:#?}",717 eval!(718 r#"719 {720 local me = self,721 a: 3,722 b(): me.a,723 }724 "#725 )726 );727 }728729 #[test]730 fn indirect_self() {731 732 733 eval!(734 r#"{735 local me = self,736 a: 3,737 b: me.a,738 }.b"#739 );740 }741742 743 #[test]744 fn std_assert_ok() {745 eval!("std.assertEqual(4.5 << 2, 16)");746 }747748 #[test]749 #[should_panic]750 fn std_assert_failure() {751 eval!("std.assertEqual(4.5 << 2, 15)");752 }753754 #[test]755 fn string_is_string() {756 assert!(primitive_equals(757 &eval!("local arr = 'hello'; (!std.isArray(arr)) && (!std.isString(arr))"),758 &Val::Bool(false),759 )760 .unwrap());761 }762763 #[test]764 fn base64_works() {765 assert_json!(r#"std.base64("test")"#, r#""dGVzdA==""#);766 }767768 #[test]769 fn utf8_chars() {770 assert_json!(771 r#"local c="😎";{c:std.codepoint(c),l:std.length(c)}"#,772 r#"{"c": 128526,"l": 1}"#773 )774 }775776 #[test]777 fn json() {778 assert_json!(779 r#"std.manifestJsonEx({a:3, b:4, c:6},"")"#,780 r#""{\n\"a\": 3,\n\"b\": 4,\n\"c\": 6\n}""#781 );782 }783784 #[test]785 fn test() {786 assert_json!(787 r#"[[a, b] for a in [1,2,3] for b in [4,5,6]]"#,788 "[[1,4],[1,5],[1,6],[2,4],[2,5],[2,6],[3,4],[3,5],[3,6]]"789 );790 }791792 #[test]793 fn sjsonnet() {794 eval!(795 r#"796 local x0 = {k: 1};797 local x1 = {k: x0.k + x0.k};798 local x2 = {k: x1.k + x1.k};799 local x3 = {k: x2.k + x2.k};800 local x4 = {k: x3.k + x3.k};801 local x5 = {k: x4.k + x4.k};802 local x6 = {k: x5.k + x5.k};803 local x7 = {k: x6.k + x6.k};804 local x8 = {k: x7.k + x7.k};805 local x9 = {k: x8.k + x8.k};806 local x10 = {k: x9.k + x9.k};807 local x11 = {k: x10.k + x10.k};808 local x12 = {k: x11.k + x11.k};809 local x13 = {k: x12.k + x12.k};810 local x14 = {k: x13.k + x13.k};811 local x15 = {k: x14.k + x14.k};812 local x16 = {k: x15.k + x15.k};813 local x17 = {k: x16.k + x16.k};814 local x18 = {k: x17.k + x17.k};815 local x19 = {k: x18.k + x18.k};816 local x20 = {k: x19.k + x19.k};817 local x21 = {k: x20.k + x20.k};818 x21.k819 "#820 );821 }822823 824 825 826 827 828 829 830 831 832 833 834 835836 837838839840841842843844845846847848849850851852853854855856857858859860861862 #[test]863 fn equality() {864 println!(865 "{:?}",866 jrsonnet_parser::parse(867 "{ x: 1, y: 2 } == { x: 1, y: 2 }",868 &ParserSettings::default()869 )870 );871 assert_eval!("{ x: 1, y: 2 } == { x: 1, y: 2 }")872 }873874 #[test]875 fn native_ext() -> crate::error::Result<()> {876 use super::native::NativeCallback;877 let evaluator = EvaluationState::default();878879 evaluator.with_stdlib();880 evaluator.settings_mut().ext_natives.insert(881 "native_add".into(),882 Rc::new(NativeCallback::new(883 ParamsDesc(Rc::new(vec![884 Param("a".into(), None),885 Param("b".into(), None),886 ])),887 |args| match (&args[0], &args[1]) {888 (Val::Num(a), Val::Num(b)) => Ok(Val::Num(a + b)),889 (_, _) => todo!(),890 },891 )),892 );893 evaluator.evaluate_snippet_raw(894 Rc::new(PathBuf::from("test.jsonnet")),895 "std.assertEqual(std.native(\"native_add\")(1, 2), 3)".into(),896 )?;897 Ok(())898 }899900 #[test]901 fn constant_intrinsic() -> crate::error::Result<()> {902 assert_eval!(903 "local std2 = std; local std = std2 { primitiveEquals(a, b):: false }; 1 == 1"904 );905 Ok(())906 }907908 struct TestImportResolver(Rc<str>);909 impl crate::import::ImportResolver for TestImportResolver {910 fn resolve_file(&self, _: &PathBuf, _: &PathBuf) -> crate::error::Result<Rc<PathBuf>> {911 Ok(Rc::new(PathBuf::from("/test")))912 }913914 fn load_file_contents(&self, _: &PathBuf) -> crate::error::Result<Rc<str>> {915 Ok(self.0.clone())916 }917918 unsafe fn as_any(&self) -> &dyn std::any::Any {919 panic!()920 }921 }922923 #[test]924 fn issue_23() {925 let state = EvaluationState::default();926 state.set_import_resolver(Box::new(TestImportResolver(r#"import "/test""#.into())));927 let _ = state.evaluate_file_raw(&PathBuf::from("/test"));928 }929}