git.delta.rocks / jrsonnet / refs/commits / 96d9345e6c0d

1#![feature(box_syntax, box_patterns)]2#![feature(type_alias_impl_trait)]3#![feature(debug_non_exhaustive)]4#![allow(macro_expanded_macro_exports_accessed_by_absolute_paths)]5mod ctx;6mod dynamic;7mod error;8mod evaluate;9mod obj;10mod val;1112use closure::closure;13pub use ctx::*;14pub use dynamic::*;15pub use error::*;16pub use evaluate::*;17use jsonnet_parser::*;18pub use obj::*;19use std::{cell::RefCell, collections::HashMap, path::PathBuf, rc::Rc};20pub use val::*;2122rc_fn_helper!(23	Binding,24	binding,25	dyn Fn(Option<ObjValue>, Option<ObjValue>) -> Result<Val>26);27rc_fn_helper!(28	LazyBinding,29	lazy_binding,30	dyn Fn(Option<ObjValue>, Option<ObjValue>) -> Result<LazyVal>31);32rc_fn_helper!(FunctionRhs, function_rhs, dyn Fn(Context) -> Result<Val>);33rc_fn_helper!(34	FunctionDefault,35	function_default,36	dyn Fn(Context, LocExpr) -> Result<Val>37);3839pub struct FileData(String, LocExpr, Option<Val>);40#[derive(Default)]41pub struct EvaluationStateInternals {42	/// Used for stack-overflows and stacktraces43	stack: RefCell<Vec<StackTraceElement>>,44	/// Contains file source codes and evaluated results for imports and pretty45	/// printing stacktraces46	files: RefCell<HashMap<PathBuf, FileData>>,47	globals: RefCell<HashMap<String, Val>>,48}4950thread_local! {51	pub static EVAL_STATE: RefCell<Option<EvaluationState>> = RefCell::new(None)52}53pub(crate) fn with_state<T>(f: impl FnOnce(&EvaluationState) -> T) -> T {54	EVAL_STATE.with(|s| f(s.borrow().as_ref().unwrap()))55}56pub(crate) fn create_error<T>(err: Error) -> Result<T> {57	with_state(|s| s.error(err))58}59pub(crate) fn push<T>(e: LocExpr, comment: String, f: impl FnOnce() -> Result<T>) -> Result<T> {60	with_state(|s| s.push(e, comment, f))61}6263#[derive(Default, Clone)]64pub struct EvaluationState(Rc<EvaluationStateInternals>);65impl EvaluationState {66	pub fn add_file(&self, name: PathBuf, code: String) -> std::result::Result<(), ParseError> {67		self.0.files.borrow_mut().insert(68			name.clone(),69			FileData(70				code.clone(),71				parse(72					&code,73					&ParserSettings {74						file_name: name,75						loc_data: true,76					},77				)?,78				None,79			),80		);8182		Ok(())83	}84	pub fn add_parsed_file(85		&self,86		name: PathBuf,87		code: String,88		parsed: LocExpr,89	) -> std::result::Result<(), ()> {90		self.091			.files92			.borrow_mut()93			.insert(name, FileData(code, parsed, None));9495		Ok(())96	}97	pub fn get_source(&self, name: &PathBuf) -> Option<String> {98		let ro_map = self.0.files.borrow();99		ro_map.get(name).map(|value| value.0.clone())100	}101	pub fn evaluate_file(&self, name: &PathBuf) -> Result<Val> {102		self.begin_state();103		let expr: LocExpr = {104			let ro_map = self.0.files.borrow();105			let value = ro_map106				.get(name)107				.unwrap_or_else(|| panic!("file not added: {:?}", name));108			if value.2.is_some() {109				return Ok(value.2.clone().unwrap());110			}111			value.1.clone()112		};113		let value = evaluate(self.create_default_context()?, &expr)?;114		{115			self.0116				.files117				.borrow_mut()118				.get_mut(name)119				.unwrap()120				.2121				.replace(value.clone());122		}123		self.end_state();124		Ok(value)125	}126127	pub fn parse_evaluate_raw(&self, code: &str) -> Result<Val> {128		let parsed = parse(129			&code,130			&ParserSettings {131				file_name: PathBuf::from("raw.jsonnet"),132				loc_data: true,133			},134		);135		self.begin_state();136		let value = evaluate(self.create_default_context()?, &parsed.unwrap());137		self.end_state();138		value139	}140141	pub fn add_global(&self, name: String, value: Val) {142		self.0.globals.borrow_mut().insert(name, value);143	}144145	pub fn add_stdlib(&self) {146		self.begin_state();147		use jsonnet_stdlib::STDLIB_STR;148		if cfg!(feature = "serialized-stdlib") {149			self.add_parsed_file(150				PathBuf::from("std.jsonnet"),151				STDLIB_STR.to_owned(),152				bincode::deserialize(include_bytes!(concat!(env!("OUT_DIR"), "/stdlib.bincode")))153					.expect("deserialize stdlib"),154			)155			.unwrap();156		} else {157			self.add_file(PathBuf::from("std.jsonnet"), STDLIB_STR.to_owned())158				.unwrap();159		}160		let val = self.evaluate_file(&PathBuf::from("std.jsonnet")).unwrap();161		self.add_global("std".to_owned(), val);162		self.end_state();163	}164165	pub fn create_default_context(&self) -> Result<Context> {166		let globals = self.0.globals.borrow();167		let mut new_bindings: HashMap<String, LazyBinding> = HashMap::new();168		for (name, value) in globals.iter() {169			new_bindings.insert(170				name.clone(),171				lazy_binding!(172					closure!(clone value, |_self, _super_obj| Ok(lazy_val!(closure!(clone value, ||Ok(value.clone())))))173				),174			);175		}176		Context::new().extend(new_bindings, None, None, None)177	}178179	pub fn push<T>(&self, e: LocExpr, comment: String, f: impl FnOnce() -> Result<T>) -> Result<T> {180		{181			let mut stack = self.0.stack.borrow_mut();182			if stack.len() > 5000 {183				drop(stack);184				return self.error(Error::StackOverflow);185			} else {186				stack.push(StackTraceElement(e, comment));187			}188		}189		let result = f();190		self.0.stack.borrow_mut().pop();191		result192	}193	pub fn print_stack_trace(&self) {194		for e in self.stack_trace().0 {195			println!("{:?} - {:?}", e.0, e.1)196		}197	}198	pub fn stack_trace(&self) -> StackTrace {199		StackTrace(self.0.stack.borrow().iter().rev().cloned().collect())200	}201	pub fn error<T>(&self, err: Error) -> Result<T> {202		Err(LocError(err, self.stack_trace()))203	}204205	fn begin_state(&self) {206		EVAL_STATE.with(|v| v.borrow_mut().replace(self.clone()));207	}208	fn end_state(&self) {209		EVAL_STATE.with(|v| v.borrow_mut().take());210	}211}212213#[cfg(test)]214pub mod tests {215	use super::Val;216	use crate::EvaluationState;217	use jsonnet_parser::*;218	use std::path::PathBuf;219220	#[test]221	fn eval_state_stacktrace() {222		let state = EvaluationState::default();223		state224			.push(225				loc_expr!(226					Expr::Num(0.0),227					true,228					(PathBuf::from("test1.jsonnet"), 10, 20)229				),230				"outer".to_owned(),231				|| {232					state.push(233						loc_expr!(234							Expr::Num(0.0),235							true,236							(PathBuf::from("test2.jsonnet"), 30, 40)237						),238						"inner".to_owned(),239						|| {240							state.print_stack_trace();241							Ok(())242						},243					)?;244					Ok(())245				},246			)247			.unwrap();248	}249250	#[test]251	fn eval_state_standard() {252		let state = EvaluationState::default();253		state.add_stdlib();254		assert_eq!(255			state256				.parse_evaluate_raw(r#"std.assertEqual(std.base64("test"), "dGVzdA==")"#)257				.unwrap(),258			Val::Bool(true)259		);260	}261262	macro_rules! eval {263		($str: expr) => {264			evaluate(265				Context::new(),266				EvaluationState::default(),267				&parse(268					$str,269					&ParserSettings {270						loc_data: true,271						file_name: "test.jsonnet".to_owned(),272					},273					)274				.unwrap(),275				)276		};277	}278279	macro_rules! eval_stdlib {280		($str: expr) => {{281			let std = "local std = ".to_owned() + jsonnet_stdlib::STDLIB_STR + ";";282			evaluate(283				Context::new(),284				EvaluationState::default(),285				&parse(286					&(std + $str),287					&ParserSettings {288						loc_data: true,289						file_name: "test.jsonnet".to_owned(),290					},291					)292				.unwrap(),293				)294			}};295	}296297	macro_rules! assert_eval {298		($str: expr) => {299			assert_eq!(300				evaluate(301					Context::new(),302					EvaluationState::default(),303					&parse(304						$str,305						&ParserSettings {306							loc_data: true,307							file_name: "test.jsonnet".to_owned(),308						}309						)310					.unwrap()311					),312				Val::Bool(true)313				)314		};315	}316	macro_rules! assert_json {317		($str: expr, $out: expr) => {318			assert_eq!(319				format!(320					"{}",321					evaluate(322						Context::new(),323						EvaluationState::default(),324						&parse(325							$str,326							&ParserSettings {327								loc_data: true,328								file_name: "test.jsonnet".to_owned(),329							}330						)331						.unwrap()332						)333					),334				$out335				)336		};337	}338	macro_rules! assert_json_stdlib {339		($str: expr, $out: expr) => {340			assert_eq!(format!("{}", eval_stdlib!($str)), $out)341		};342	}343	macro_rules! assert_eval_neg {344		($str: expr) => {345			assert_eq!(346				evaluate(347					Context::new(),348					EvaluationState::default(),349					&parse(350						$str,351						&ParserSettings {352							loc_data: true,353							file_name: "test.jsonnet".to_owned(),354						}355						)356					.unwrap()357					),358				Val::Bool(false)359				)360		};361	}362363	/*364	/// Sanity checking, before trusting to another tests365	#[test]366	fn equality_operator() {367		assert_eval!("2 == 2");368		assert_eval_neg!("2 != 2");369		assert_eval!("2 != 3");370		assert_eval_neg!("2 == 3");371		assert_eval!("'Hello' == 'Hello'");372		assert_eval_neg!("'Hello' != 'Hello'");373		assert_eval!("'Hello' != 'World'");374		assert_eval_neg!("'Hello' == 'World'");375	}376377	#[test]378	fn math_evaluation() {379		assert_eval!("2 + 2 * 2 == 6");380		assert_eval!("3 + (2 + 2 * 2) == 9");381	}382383	#[test]384	fn string_concat() {385		assert_eval!("'Hello' + 'World' == 'HelloWorld'");386		assert_eval!("'Hello' * 3 == 'HelloHelloHello'");387		assert_eval!("'Hello' + 'World' * 3 == 'HelloWorldWorldWorld'");388	}389390	#[test]391	fn local() {392		assert_eval!("local a = 2; local b = 3; a + b == 5");393		assert_eval!("local a = 1, b = a + 1; a + b == 3");394		assert_eval!("local a = 1; local a = 2; a == 2");395	}396397	#[test]398	fn object_lazyness() {399		assert_json!("local a = {a:error 'test'}; {}", r#"{}"#);400	}401402	#[test]403	fn object_inheritance() {404		assert_json!("{a: self.b} + {b:3}", r#"{"a":3,"b":3}"#);405	}406407	#[test]408	fn test_object() {409		assert_json!("{a:2}", r#"{"a":2}"#);410		assert_json!("{a:2+2}", r#"{"a":4}"#);411		assert_json!("{a:2}+{b:2}", r#"{"a":2,"b":2}"#);412		assert_json!("{b:3}+{b:2}", r#"{"b":2}"#);413		assert_json!("{b:3}+{b+:2}", r#"{"b":5}"#);414		assert_json!("local test='a'; {[test]:2}", r#"{"a":2}"#);415		assert_json!(416			r#"417				{418					name: "Alice",419					welcome: "Hello " + self.name + "!",420				}421			"#,422			r#"{"name":"Alice","welcome":"Hello Alice!"}"#423		);424		assert_json!(425			r#"426				{427					name: "Alice",428					welcome: "Hello " + self.name + "!",429				} + {430					name: "Bob"431				}432			"#,433			r#"{"name":"Bob","welcome":"Hello Bob!"}"#434		);435	}436437	#[test]438	fn functions() {439		assert_json!(r#"local a = function(b, c = 2) b + c; a(2)"#, "4");440		assert_json!(441			r#"local a = function(b, c = "Dear") b + c + d, d = "World"; a("Hello")"#,442			r#""HelloDearWorld""#443		);444	}445446	#[test]447	fn local_methods() {448		assert_json!(r#"local a(b, c = 2) = b + c; a(2)"#, "4");449		assert_json!(450			r#"local a(b, c = "Dear") = b + c + d, d = "World"; a("Hello")"#,451			r#""HelloDearWorld""#452		);453	}454455	#[test]456	fn object_locals() {457		assert_json!(r#"{local a = 3, b: a}"#, r#"{"b":3}"#);458		assert_json!(r#"{local a = 3, local c = a, b: c}"#, r#"{"b":3}"#);459		assert_json!(460			r#"{local a = function (b) {[b]:4}, test: a("test")}"#,461			r#"{"test":{"test":4}}"#462		);463	}464465	#[test]466	fn direct_self() {467		println!(468			"{:#?}",469			eval!(470				r#"471					{472						local me = self,473						a: 3,474						b(): me.a,475					}476				"#477			)478		);479	}480481	#[test]482	fn indirect_self() {483		// `self` assigned to `me` was lost when being484		// referenced from field485		eval_stdlib!(486			r#"{487				local me = self,488				a: 3,489				b: me.a,490			}.b"#491		);492	}493494	// We can't trust other tests (And official jsonnet testsuite), if assert is not working correctly495	#[test]496	fn std_assert_ok() {497		eval_stdlib!("std.assertEqual(4.5 << 2, 16)");498	}499500	#[test]501	#[should_panic]502	fn std_assert_failure() {503		eval_stdlib!("std.assertEqual(4.5 << 2, 15)");504	}505506	#[test]507	fn string_is_string() {508		assert_eq!(509			eval_stdlib!("local arr = 'hello'; (!std.isArray(arr)) && (!std.isString(arr))"),510			Val::Bool(false)511		);512	}513514	#[test]515	fn base64_works() {516		assert_json_stdlib!(r#"std.base64("test")"#, r#""dGVzdA==""#);517	}518519	#[test]520	fn utf8_chars() {521		assert_json_stdlib!(522			r#"local c="😎";{c:std.codepoint(c),l:std.length(c)}"#,523			r#"{"c":128526,"l":1}"#524		)525	}526527	#[test]528	fn json() {529		assert_json_stdlib!(530			r#"std.manifestJsonEx({a:3, b:4, c:6},"")"#,531			r#""{\n"a": 3,\n"b": 4,\n"c": 6\n}""#532		);533	}534535	#[test]536	fn test() {537		assert_json_stdlib!(538			r#"[[a, b] for a in [1,2,3] for b in [4,5,6]]"#,539			"[[1,4],[1,5],[1,6],[2,4],[2,5],[2,6],[3,4],[3,5],[3,6]]"540		);541	}542543	#[test]544	fn sjsonnet() {545		eval!(546			r#"547			local x0 = {k: 1};548			local x1 = {k: x0.k + x0.k};549			local x2 = {k: x1.k + x1.k};550			local x3 = {k: x2.k + x2.k};551			local x4 = {k: x3.k + x3.k};552			local x5 = {k: x4.k + x4.k};553			local x6 = {k: x5.k + x5.k};554			local x7 = {k: x6.k + x6.k};555			local x8 = {k: x7.k + x7.k};556			local x9 = {k: x8.k + x8.k};557			local x10 = {k: x9.k + x9.k};558			local x11 = {k: x10.k + x10.k};559			local x12 = {k: x11.k + x11.k};560			local x13 = {k: x12.k + x12.k};561			local x14 = {k: x13.k + x13.k};562			local x15 = {k: x14.k + x14.k};563			local x16 = {k: x15.k + x15.k};564			local x17 = {k: x16.k + x16.k};565			local x18 = {k: x17.k + x17.k};566			local x19 = {k: x18.k + x18.k};567			local x20 = {k: x19.k + x19.k};568			local x21 = {k: x20.k + x20.k};569			x21.k570		"#571		);572	}573	*/574}