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, rc::Rc};20pub use val::*;2122rc_fn_helper!(23 Binding,24 binding,25 dyn Fn(Option<ObjValue>, Option<ObjValue>) -> Val26);27rc_fn_helper!(28 LazyBinding,29 lazy_binding,30 dyn Fn(Option<ObjValue>, Option<ObjValue>) -> LazyVal31);32rc_fn_helper!(FunctionRhs, function_rhs, dyn Fn(Context) -> Val);33rc_fn_helper!(34 FunctionDefault,35 function_default,36 dyn Fn(Context, LocExpr) -> Val37);3839#[derive(Default)]40pub struct EvaluationStateInternals {41 42 stack: RefCell<Vec<(LocExpr, String)>>,43 44 files: RefCell<HashMap<String, (String, LocExpr, Option<Val>)>>,45 globals: RefCell<HashMap<String, Val>>,46}4748#[derive(Default, Clone)]49pub struct EvaluationState(Rc<EvaluationStateInternals>);50impl EvaluationState {51 pub fn add_file(&self, name: String, code: String) -> Result<(), Box<dyn std::error::Error>> {52 self.0.files.borrow_mut().insert(53 name.clone(),54 (55 code.clone(),56 parse(57 &code,58 &ParserSettings {59 file_name: name.clone(),60 loc_data: true,61 },62 )?,63 None,64 ),65 );6667 Ok(())68 }69 pub fn evaluate_file(&self, name: &str) -> Result<Val, Box<dyn std::error::Error>> {70 let expr: LocExpr = {71 let ro_map = self.0.files.borrow();72 let value = ro_map73 .get(name)74 .unwrap_or_else(|| panic!("file not added: {:?}", name));75 if value.2.is_some() {76 return Ok(value.2.clone().unwrap());77 }78 value.1.clone()79 };80 let value = evaluate(self.create_default_context(), self.clone(), &expr);81 {82 self.083 .files84 .borrow_mut()85 .get_mut(name)86 .unwrap()87 .288 .replace(value.clone());89 }90 Ok(value)91 }9293 pub fn parse_evaluate_raw(&self, code: &str) -> Val {94 let parsed = parse(95 &code,96 &ParserSettings {97 file_name: "raw.jsonnet".to_owned(),98 loc_data: true,99 },100 );101 evaluate(102 self.create_default_context(),103 self.clone(),104 &parsed.unwrap(),105 )106 }107108 pub fn add_stdlib(&self) {109 use jsonnet_stdlib::STDLIB_STR;110 self.add_file("std.jsonnet".to_owned(), STDLIB_STR.to_owned())111 .unwrap();112 let val = self.evaluate_file("std.jsonnet").unwrap();113 self.0.globals.borrow_mut().insert("std".to_owned(), val);114 }115116 pub fn create_default_context(&self) -> Context {117 let globals = self.0.globals.borrow();118 let mut new_bindings: HashMap<String, LazyBinding> = HashMap::new();119 for (name, value) in globals.iter() {120 new_bindings.insert(121 name.clone(),122 lazy_binding!(123 closure!(clone value, |_self, _super_obj| lazy_val!(closure!(clone value, ||value.clone())))124 ),125 );126 }127 Context::new().extend(new_bindings, None, None, None)128 }129130 pub fn push<T>(&self, e: LocExpr, comment: String, f: impl FnOnce() -> T) -> T {131 self.0.stack.borrow_mut().push((e, comment));132 let result = f();133 self.0.stack.borrow_mut().pop();134 result135 }136 pub fn print_stack_trace(&self) {137 for e in self.stack_trace() {138 println!("{:?} - {:?}", e.0, e.1)139 }140 }141 pub fn stack_trace(&self) -> Vec<(LocExpr, String)> {142 self.0143 .stack144 .borrow()145 .iter()146 .rev()147 .map(|e| e.clone())148 .collect()149 }150}151152#[cfg(test)]153pub mod tests {154 use super::{evaluate, Context, Val};155 use crate::EvaluationState;156 use jsonnet_parser::*;157158 #[test]159 fn eval_state_stacktrace() {160 let state = EvaluationState::default();161 state.push(162 loc_expr!(Expr::Num(0.0), true, ("test1.jsonnet".to_owned(), 10, 20)),163 "outer".to_owned(),164 || {165 state.push(166 loc_expr!(Expr::Num(0.0), true, ("test2.jsonnet".to_owned(), 30, 40)),167 "inner".to_owned(),168 || state.print_stack_trace(),169 );170 },171 );172 }173174 #[test]175 fn eval_state_standard() {176 let state = EvaluationState::default();177 state.add_stdlib();178 assert_eq!(179 state.parse_evaluate_raw(r#"std.base64("test") == "dGVzdA==""#),180 Val::Bool(true)181 );182 }183184 macro_rules! eval {185 ($str: expr) => {186 evaluate(187 Context::new(),188 EvaluationState::default(),189 &parse(190 $str,191 &ParserSettings {192 loc_data: true,193 file_name: "test.jsonnet".to_owned(),194 },195 )196 .unwrap(),197 )198 };199 }200201 macro_rules! eval_stdlib {202 ($str: expr) => {{203 let std = "local std = ".to_owned() + jsonnet_stdlib::STDLIB_STR + ";";204 evaluate(205 Context::new(),206 EvaluationState::default(),207 &parse(208 &(std + $str),209 &ParserSettings {210 loc_data: true,211 file_name: "test.jsonnet".to_owned(),212 },213 )214 .unwrap(),215 )216 }};217 }218219 macro_rules! assert_eval {220 ($str: expr) => {221 assert_eq!(222 evaluate(223 Context::new(),224 EvaluationState::default(),225 &parse(226 $str,227 &ParserSettings {228 loc_data: true,229 file_name: "test.jsonnet".to_owned(),230 }231 )232 .unwrap()233 ),234 Val::Bool(true)235 )236 };237 }238 macro_rules! assert_json {239 ($str: expr, $out: expr) => {240 assert_eq!(241 format!(242 "{}",243 evaluate(244 Context::new(),245 EvaluationState::default(),246 &parse(247 $str,248 &ParserSettings {249 loc_data: true,250 file_name: "test.jsonnet".to_owned(),251 }252 )253 .unwrap()254 )255 ),256 $out257 )258 };259 }260 macro_rules! assert_json_stdlib {261 ($str: expr, $out: expr) => {262 assert_eq!(format!("{}", eval_stdlib!($str)), $out)263 };264 }265 macro_rules! assert_eval_neg {266 ($str: expr) => {267 assert_eq!(268 evaluate(269 Context::new(),270 EvaluationState::default(),271 &parse(272 $str,273 &ParserSettings {274 loc_data: true,275 file_name: "test.jsonnet".to_owned(),276 }277 )278 .unwrap()279 ),280 Val::Bool(false)281 )282 };283 }284285 286 #[test]287 fn equality_operator() {288 assert_eval!("2 == 2");289 assert_eval_neg!("2 != 2");290 assert_eval!("2 != 3");291 assert_eval_neg!("2 == 3");292 assert_eval!("'Hello' == 'Hello'");293 assert_eval_neg!("'Hello' != 'Hello'");294 assert_eval!("'Hello' != 'World'");295 assert_eval_neg!("'Hello' == 'World'");296 }297298 #[test]299 fn math_evaluation() {300 assert_eval!("2 + 2 * 2 == 6");301 assert_eval!("3 + (2 + 2 * 2) == 9");302 }303304 #[test]305 fn string_concat() {306 assert_eval!("'Hello' + 'World' == 'HelloWorld'");307 assert_eval!("'Hello' * 3 == 'HelloHelloHello'");308 assert_eval!("'Hello' + 'World' * 3 == 'HelloWorldWorldWorld'");309 }310311 #[test]312 fn local() {313 assert_eval!("local a = 2; local b = 3; a + b == 5");314 assert_eval!("local a = 1, b = a + 1; a + b == 3");315 assert_eval!("local a = 1; local a = 2; a == 2");316 }317318 #[test]319 fn object_lazyness() {320 assert_json!("local a = {a:error 'test'}; {}", r#"{}"#);321 }322323 #[test]324 fn object_inheritance() {325 assert_json!("{a: self.b} + {b:3}", r#"{"a":3,"b":3}"#);326 }327328 #[test]329 fn test_object() {330 assert_json!("{a:2}", r#"{"a":2}"#);331 assert_json!("{a:2+2}", r#"{"a":4}"#);332 assert_json!("{a:2}+{b:2}", r#"{"a":2,"b":2}"#);333 assert_json!("{b:3}+{b:2}", r#"{"b":2}"#);334 assert_json!("{b:3}+{b+:2}", r#"{"b":5}"#);335 assert_json!("local test='a'; {[test]:2}", r#"{"a":2}"#);336 assert_json!(337 r#"338 {339 name: "Alice",340 welcome: "Hello " + self.name + "!",341 }342 "#,343 r#"{"name":"Alice","welcome":"Hello Alice!"}"#344 );345 assert_json!(346 r#"347 {348 name: "Alice",349 welcome: "Hello " + self.name + "!",350 } + {351 name: "Bob"352 }353 "#,354 r#"{"name":"Bob","welcome":"Hello Bob!"}"#355 );356 }357358 #[test]359 fn functions() {360 assert_json!(r#"local a = function(b, c = 2) b + c; a(2)"#, "4");361 assert_json!(362 r#"local a = function(b, c = "Dear") b + c + d, d = "World"; a("Hello")"#,363 r#""HelloDearWorld""#364 );365 }366367 #[test]368 fn local_methods() {369 assert_json!(r#"local a(b, c = 2) = b + c; a(2)"#, "4");370 assert_json!(371 r#"local a(b, c = "Dear") = b + c + d, d = "World"; a("Hello")"#,372 r#""HelloDearWorld""#373 );374 }375376 #[test]377 fn object_locals() {378 assert_json!(r#"{local a = 3, b: a}"#, r#"{"b":3}"#);379 assert_json!(r#"{local a = 3, local c = a, b: c}"#, r#"{"b":3}"#);380 assert_json!(381 r#"{local a = function (b) {[b]:4}, test: a("test")}"#,382 r#"{"test":{"test":4}}"#383 );384 }385386 #[test]387 fn direct_self() {388 println!(389 "{:#?}",390 eval!(391 r#"392 {393 local me = self,394 a: 3,395 b(): me.a,396 }397 "#398 )399 );400 }401402 #[test]403 fn indirect_self() {404 405 406 eval_stdlib!(407 r#"{408 local me = self,409 a: 3,410 b: me.a,411 }.b"#412 );413 }414415 416 #[test]417 fn std_assert_ok() {418 eval_stdlib!("std.assertEqual(4.5 << 2, 16)");419 }420421 #[test]422 #[should_panic]423 fn std_assert_failure() {424 eval_stdlib!("std.assertEqual(4.5 << 2, 15)");425 }426427 #[test]428 fn string_is_string() {429 assert_eq!(430 eval_stdlib!("local arr = 'hello'; (!std.isArray(arr)) && (!std.isString(arr))"),431 Val::Bool(false)432 );433 }434435 #[test]436 fn base64_works() {437 assert_json_stdlib!(r#"std.base64("test")"#, r#""dGVzdA==""#);438 }439440 #[test]441 fn utf8_chars() {442 assert_json_stdlib!(443 r#"local c="😎";{c:std.codepoint(c),l:std.length(c)}"#,444 r#"{"c":128526,"l":1}"#445 )446 }447448 #[test]449 fn json() {450 assert_json_stdlib!(451 r#"std.manifestJsonEx({a:3, b:4, c:6},"")"#,452 r#""{\n"a": 3,\n"b": 4,\n"c": 6\n}""#453 );454 }455456 #[test]457 fn test() {458 assert_json_stdlib!(459 r#"[[a, b] for a in [1,2,3] for b in [4,5,6]]"#,460 "[[1,4],[1,5],[1,6],[2,4],[2,5],[2,6],[3,4],[3,5],[3,6]]"461 );462 }463464 #[test]465 fn sjsonnet() {466 eval!(467 r#"468 local x0 = {k: 1};469 local x1 = {k: x0.k + x0.k};470 local x2 = {k: x1.k + x1.k};471 local x3 = {k: x2.k + x2.k};472 local x4 = {k: x3.k + x3.k};473 local x5 = {k: x4.k + x4.k};474 local x6 = {k: x5.k + x5.k};475 local x7 = {k: x6.k + x6.k};476 local x8 = {k: x7.k + x7.k};477 local x9 = {k: x8.k + x8.k};478 local x10 = {k: x9.k + x9.k};479 local x11 = {k: x10.k + x10.k};480 local x12 = {k: x11.k + x11.k};481 local x13 = {k: x12.k + x12.k};482 local x14 = {k: x13.k + x13.k};483 local x15 = {k: x14.k + x14.k};484 local x16 = {k: x15.k + x15.k};485 local x17 = {k: x16.k + x16.k};486 local x18 = {k: x17.k + x17.k};487 local x19 = {k: x18.k + x18.k};488 local x20 = {k: x19.k + x19.k};489 local x21 = {k: x20.k + x20.k};490 x21.k491 "#492 );493 }494}