git.delta.rocks / jrsonnet / refs/commits / 8d4d5b78bb8b

1#![allow(clippy::redundant_closure_call, clippy::derive_partial_eq_without_eq)]23use std::rc::Rc;45use peg::parser;6mod expr;7pub use expr::*;8pub use jrsonnet_interner::IStr;9pub use peg;10mod location;11mod source;12mod unescape;13pub use location::CodeLocation;14pub use source::{Source, SourceDirectory, SourceFile, SourcePath, SourcePathT, SourceVirtual};1516pub struct ParserSettings {17	pub source: Source,18}1920macro_rules! expr_bin {21	($a:ident $op:ident $b:ident) => {22		Expr::BinaryOp($a, $op, $b)23	};24}25macro_rules! expr_un {26	($op:ident $a:ident) => {27		Expr::UnaryOp($op, $a)28	};29}3031parser! {32	grammar jsonnet_parser() for str {33		use peg::ParseLiteral;3435		rule eof() = quiet!{![_]} / expected!("<eof>")36		rule eol() = "\n" / eof()3738		/// Standard C-like comments39		rule comment()40			= "//" (!eol()[_])* eol()41			/ "/*" ("\\*/" / "\\\\" / (!("*/")[_]))* "*/"42			/ "#" (!eol()[_])* eol()4344		rule single_whitespace() = quiet!{([' ' | '\r' | '\n' | '\t'] / comment())} / expected!("<whitespace>")45		rule _() = quiet!{([' ' | '\r' | '\n' | '\t']+) / comment()}* / expected!("<whitespace>")4647		/// For comma-delimited elements48		rule comma() = quiet!{_ "," _} / expected!("<comma>")49		rule alpha() -> char = c:$(['_' | 'a'..='z' | 'A'..='Z']) {c.chars().next().unwrap()}50		rule digit() -> char = d:$(['0'..='9']) {d.chars().next().unwrap()}51		rule end_of_ident() = !['0'..='9' | '_' | 'a'..='z' | 'A'..='Z']52		/// Sequence of digits53		rule uint_str() -> &'input str = a:$(digit()+) { a }54		/// Number in scientific notation format55		rule number() -> f64 = quiet!{a:$(uint_str() ("." uint_str())? (['e'|'E'] (s:['+'|'-'])? uint_str())?) {? a.parse().map_err(|_| "<number>") }} / expected!("<number>")5657		/// Reserved word followed by any non-alphanumberic58		rule reserved() = ("assert" / "else" / "error" / "false" / "for" / "function" / "if" / "import" / "importstr" / "importbin" / "in" / "local" / "null" / "tailstrict" / "then" / "self" / "super" / "true") end_of_ident()59		rule id() -> IStr = v:$(quiet!{ !reserved() alpha() (alpha() / digit())*} / expected!("<identifier>")) { v.into() }6061		rule keyword(id: &'static str) -> ()62			= ##parse_string_literal(id) end_of_ident()6364		pub rule param(s: &ParserSettings) -> expr::Param = name:destruct(s) expr:(_ "=" _ expr:expr(s){expr})? { expr::Param(name, expr) }65		pub rule params(s: &ParserSettings) -> expr::ParamsDesc66			= params:param(s) ** comma() comma()? { expr::ParamsDesc(Rc::new(params)) }67			/ { expr::ParamsDesc(Rc::new(Vec::new())) }6869		pub rule arg(s: &ParserSettings) -> (Option<IStr>, LocExpr)70			= name:(quiet! { (s:id() _ "=" !['='] _ {s})? } / expected!("<argument name>")) expr:expr(s) {(name, expr)}7172		pub rule args(s: &ParserSettings) -> expr::ArgsDesc73			= args:arg(s)**comma() comma()? {?74				let unnamed_count = args.iter().take_while(|(n, _)| n.is_none()).count();75				let mut unnamed = Vec::with_capacity(unnamed_count);76				let mut named = Vec::with_capacity(args.len() - unnamed_count);77				let mut named_started = false;78				for (name, value) in args {79					if let Some(name) = name {80						named_started = true;81						named.push((name, value));82					} else {83						if named_started {84							return Err("<named argument>")85						}86						unnamed.push(value);87					}88				}89				Ok(expr::ArgsDesc::new(unnamed, named))90			}9192		pub rule destruct_rest() -> expr::DestructRest93			= "..." into:(_ into:id() {into})? {if let Some(into) = into {94				expr::DestructRest::Keep(into)95			} else {expr::DestructRest::Drop}}96		pub rule destruct_array(s: &ParserSettings) -> expr::Destruct97			= "[" _ start:destruct(s)**comma() rest:(98				comma() _ rest:destruct_rest()? end:(99					comma() end:destruct(s)**comma() (_ comma())? {end}100					/ comma()? {Vec::new()}101				) {(rest, end)}102				/ comma()? {(None, Vec::new())}103			) _ "]" {?104				#[cfg(feature = "exp-destruct")] return Ok(expr::Destruct::Array {105					start,106					rest: rest.0,107					end: rest.1,108				});109				#[cfg(not(feature = "exp-destruct"))] Err("experimental destructuring was not enabled")110			}111		pub rule destruct_object(s: &ParserSettings) -> expr::Destruct112			= "{" _113				fields:(name:id() into:(_ ":" _ into:destruct(s) {into})? default:(_ "=" _ v:expr(s) {v})? {(name, into, default)})**comma()114				rest:(115					comma() rest:destruct_rest()? {rest}116					/ comma()? {None}117				)118			_ "}" {?119				#[cfg(feature = "exp-destruct")] return Ok(expr::Destruct::Object {120					fields,121					rest,122				});123				#[cfg(not(feature = "exp-destruct"))] Err("experimental destructuring was not enabled")124			}125		pub rule destruct(s: &ParserSettings) -> expr::Destruct126			= v:id() {expr::Destruct::Full(v)}127			/ "?" {?128				#[cfg(feature = "exp-destruct")] return Ok(expr::Destruct::Skip);129				#[cfg(not(feature = "exp-destruct"))] Err("experimental destructuring was not enabled")130			}131			/ arr:destruct_array(s) {arr}132			/ obj:destruct_object(s) {obj}133134		pub rule bind(s: &ParserSettings) -> expr::BindSpec135			= into:destruct(s) _ "=" _ expr:expr(s) {expr::BindSpec::Field{into, value: expr}}136			/ name:id() _ "(" _ params:params(s) _ ")" _ "=" _ expr:expr(s) {expr::BindSpec::Function{name, params, value: expr}}137138		pub rule assertion(s: &ParserSettings) -> expr::AssertStmt139			= keyword("assert") _ cond:expr(s) msg:(_ ":" _ e:expr(s) {e})? { expr::AssertStmt(cond, msg) }140141		pub rule whole_line() -> &'input str142			= str:$((!['\n'][_])* "\n") {str}143		pub rule string_block() -> String144			= "|||" (!['\n']single_whitespace())* "\n"145			  empty_lines:$(['\n']*)146			  prefix:[' ' | '\t']+ first_line:whole_line()147			  lines:("\n" {"\n"} / [' ' | '\t']*<{prefix.len()}> s:whole_line() {s})*148			  [' ' | '\t']*<, {prefix.len() - 1}> "|||"149			  {let mut l = empty_lines.to_owned(); l.push_str(first_line); l.extend(lines); l}150151		rule hex_char()152			= quiet! { ['0'..='9' | 'a'..='f' | 'A'..='F'] } / expected!("<hex char>")153154		rule string_char(c: rule<()>)155			= (!['\\']!c()[_])+156			/ "\\\\"157			/ "\\u" hex_char() hex_char() hex_char() hex_char()158			/ "\\x" hex_char() hex_char()159			/ ['\\'] (quiet! { ['b' | 'f' | 'n' | 'r' | 't' | '"' | '\''] } / expected!("<escape character>"))160		pub rule string() -> String161			= ['"'] str:$(string_char(<"\"">)*) ['"'] {? unescape::unescape(str).ok_or("<escaped string>")}162			/ ['\''] str:$(string_char(<"\'">)*) ['\''] {? unescape::unescape(str).ok_or("<escaped string>")}163			/ quiet!{ "@'" str:$(("''" / (!['\''][_]))*) "'" {str.replace("''", "'")}164			/ "@\"" str:$(("\"\"" / (!['"'][_]))*) "\"" {str.replace("\"\"", "\"")}165			/ string_block() } / expected!("<string>")166167		pub rule field_name(s: &ParserSettings) -> expr::FieldName168			= name:id() {expr::FieldName::Fixed(name)}169			/ name:string() {expr::FieldName::Fixed(name.into())}170			/ "[" _ expr:expr(s) _ "]" {expr::FieldName::Dyn(expr)}171		pub rule visibility() -> expr::Visibility172			= ":::" {expr::Visibility::Unhide}173			/ "::" {expr::Visibility::Hidden}174			/ ":" {expr::Visibility::Normal}175		pub rule field(s: &ParserSettings) -> expr::FieldMember176			= name:field_name(s) _ plus:"+"? _ visibility:visibility() _ value:expr(s) {expr::FieldMember{177				name,178				plus: plus.is_some(),179				params: None,180				visibility,181				value,182			}}183			/ name:field_name(s) _ "(" _ params:params(s) _ ")" _ visibility:visibility() _ value:expr(s) {expr::FieldMember{184				name,185				plus: false,186				params: Some(params),187				visibility,188				value,189			}}190		pub rule obj_local(s: &ParserSettings) -> BindSpec191			= keyword("local") _ bind:bind(s) {bind}192		pub rule member(s: &ParserSettings) -> expr::Member193			= bind:obj_local(s) {expr::Member::BindStmt(bind)}194			/ assertion:assertion(s) {expr::Member::AssertStmt(assertion)}195			/ field:field(s) {expr::Member::Field(field)}196		pub rule objinside(s: &ParserSettings) -> expr::ObjBody197			= pre_locals:(b: obj_local(s) comma() {b})* &"[" field:field(s) post_locals:(comma() b:obj_local(s) {b})* _ ("," _)? forspec:forspec(s) others:(_ rest:compspec(s) {rest})? {198				let mut compspecs = vec![CompSpec::ForSpec(forspec)];199				compspecs.extend(others.unwrap_or_default());200				expr::ObjBody::ObjComp(expr::ObjComp{201					pre_locals,202					field,203					post_locals,204					compspecs,205				})206			}207			/ members:(member(s) ** comma()) comma()? {expr::ObjBody::MemberList(members)}208		pub rule ifspec(s: &ParserSettings) -> IfSpecData209			= keyword("if") _ expr:expr(s) {IfSpecData(expr)}210		pub rule forspec(s: &ParserSettings) -> ForSpecData211			= keyword("for") _ id:destruct(s) _ keyword("in") _ cond:expr(s) {ForSpecData(id, cond)}212		pub rule compspec(s: &ParserSettings) -> Vec<expr::CompSpec>213			= s:(i:ifspec(s) { expr::CompSpec::IfSpec(i) } / f:forspec(s) {expr::CompSpec::ForSpec(f)} ) ** _ {s}214		pub rule local_expr(s: &ParserSettings) -> Expr215			= keyword("local") _ binds:bind(s) ** comma() (_ ",")? _ ";" _ expr:expr(s) { Expr::LocalExpr(binds, expr) }216		pub rule string_expr(s: &ParserSettings) -> Expr217			= s:string() {Expr::Str(s.into())}218		pub rule obj_expr(s: &ParserSettings) -> Expr219			= "{" _ body:objinside(s) _ "}" {Expr::Obj(body)}220		pub rule array_expr(s: &ParserSettings) -> Expr221			= "[" _ elems:(expr(s) ** comma()) _ comma()? "]" {Expr::Arr(elems)}222		pub rule array_comp_expr(s: &ParserSettings) -> Expr223			= "[" _ expr:expr(s) _ comma()? _ forspec:forspec(s) _ others:(others: compspec(s) _ {others})? "]" {224				let mut specs = vec![CompSpec::ForSpec(forspec)];225				specs.extend(others.unwrap_or_default());226				Expr::ArrComp(expr, specs)227			}228		pub rule number_expr(s: &ParserSettings) -> Expr229			= n:number() { expr::Expr::Num(n) }230		pub rule var_expr(s: &ParserSettings) -> Expr231			= n:id() { expr::Expr::Var(n) }232		pub rule id_loc(s: &ParserSettings) -> LocExpr233			= a:position!() n:id() b:position!() { LocExpr(Rc::new(expr::Expr::Str(n)), ExprLocation(s.source.clone(), a as u32,b as u32)) }234		pub rule if_then_else_expr(s: &ParserSettings) -> Expr235			= cond:ifspec(s) _ keyword("then") _ cond_then:expr(s) cond_else:(_ keyword("else") _ e:expr(s) {e})? {Expr::IfElse{236				cond,237				cond_then,238				cond_else,239			}}240241		pub rule literal(s: &ParserSettings) -> Expr242			= v:(243				keyword("null") {LiteralType::Null}244				/ keyword("true") {LiteralType::True}245				/ keyword("false") {LiteralType::False}246				/ keyword("self") {LiteralType::This}247				/ keyword("$") {LiteralType::Dollar}248				/ keyword("super") {LiteralType::Super}249			) {Expr::Literal(v)}250251		pub rule expr_basic(s: &ParserSettings) -> Expr252			= literal(s)253254			/ string_expr(s) / number_expr(s)255			/ array_expr(s)256			/ obj_expr(s)257			/ array_expr(s)258			/ array_comp_expr(s)259260			/ keyword("importstr") _ path:string() {Expr::ImportStr(path.into())}261			/ keyword("importbin") _ path:string() {Expr::ImportBin(path.into())}262			/ keyword("import") _ path:string() {Expr::Import(path.into())}263264			/ var_expr(s)265			/ local_expr(s)266			/ if_then_else_expr(s)267268			/ keyword("function") _ "(" _ params:params(s) _ ")" _ expr:expr(s) {Expr::Function(params, expr)}269			/ assertion:assertion(s) _ ";" _ expr:expr(s) { Expr::AssertExpr(assertion, expr) }270271			/ keyword("error") _ expr:expr(s) { Expr::ErrorStmt(expr) }272273		rule slice_part(s: &ParserSettings) -> Option<LocExpr>274			= _ e:(e:expr(s) _{e})? {e}275		pub rule slice_desc(s: &ParserSettings) -> SliceDesc276			= start:slice_part(s) ":" pair:(end:slice_part(s) step:(":" e:slice_part(s){e})? {(end, step.flatten())})? {277				let (end, step) = if let Some((end, step)) = pair {278					(end, step)279				}else{280					(None, None)281				};282283				SliceDesc { start, end, step }284			}285286		rule binop(x: rule<()>) -> ()287			= quiet!{ x() } / expected!("<binary op>")288		rule unaryop(x: rule<()>) -> ()289			= quiet!{ x() } / expected!("<unary op>")290291292		use BinaryOpType::*;293		use UnaryOpType::*;294		rule expr(s: &ParserSettings) -> LocExpr295			= precedence! {296				start:position!() v:@ end:position!() { LocExpr(Rc::new(v), ExprLocation(s.source.clone(), start as u32, end as u32)) }297				--298				a:(@) _ binop(<"||">) _ b:@ {expr_bin!(a Or b)}299				--300				a:(@) _ binop(<"&&">) _ b:@ {expr_bin!(a And b)}301				--302				a:(@) _ binop(<"|">) _ b:@ {expr_bin!(a BitOr b)}303				--304				a:@ _ binop(<"^">) _ b:(@) {expr_bin!(a BitXor b)}305				--306				a:(@) _ binop(<"&">) _ b:@ {expr_bin!(a BitAnd b)}307				--308				a:(@) _ binop(<"==">) _ b:@ {expr_bin!(a Eq b)}309				a:(@) _ binop(<"!=">) _ b:@ {expr_bin!(a Neq b)}310				--311				a:(@) _ binop(<"<">) _ b:@ {expr_bin!(a Lt b)}312				a:(@) _ binop(<">">) _ b:@ {expr_bin!(a Gt b)}313				a:(@) _ binop(<"<=">) _ b:@ {expr_bin!(a Lte b)}314				a:(@) _ binop(<">=">) _ b:@ {expr_bin!(a Gte b)}315				a:(@) _ binop(<keyword("in")>) _ b:@ {expr_bin!(a In b)}316				--317				a:(@) _ binop(<"<<">) _ b:@ {expr_bin!(a Lhs b)}318				a:(@) _ binop(<">>">) _ b:@ {expr_bin!(a Rhs b)}319				--320				a:(@) _ binop(<"+">) _ b:@ {expr_bin!(a Add b)}321				a:(@) _ binop(<"-">) _ b:@ {expr_bin!(a Sub b)}322				--323				a:(@) _ binop(<"*">) _ b:@ {expr_bin!(a Mul b)}324				a:(@) _ binop(<"/">) _ b:@ {expr_bin!(a Div b)}325				a:(@) _ binop(<"%">) _ b:@ {expr_bin!(a Mod b)}326				--327						unaryop(<"-">) _ b:@ {expr_un!(Minus b)}328						unaryop(<"!">) _ b:@ {expr_un!(Not b)}329						unaryop(<"~">) _ b:@ {expr_un!(BitNot b)}330				--331				a:(@) _ "[" _ e:slice_desc(s) _ "]" {Expr::Slice(a, e)}332				a:(@) _ "." _ a:position!() e:id_loc(s) b:position!() {Expr::Index(a, e)}333				a:(@) _ "[" _ e:expr(s) _ "]" {Expr::Index(a, e)}334				a:(@) _ "(" _ args:args(s) _ ")" ts:(_ keyword("tailstrict"))? {Expr::Apply(a, args, ts.is_some())}335				a:(@) _ "{" _ body:objinside(s) _ "}" {Expr::ObjExtend(a, body)}336				--337				e:expr_basic(s) {e}338				"(" _ e:expr(s) _ ")" {Expr::Parened(e)}339			}340341		pub rule jsonnet(s: &ParserSettings) -> LocExpr = _ e:expr(s) _ {e}342	}343}344345pub type ParseError = peg::error::ParseError<peg::str::LineCol>;346pub fn parse(str: &str, settings: &ParserSettings) -> Result<LocExpr, ParseError> {347	jsonnet_parser::jsonnet(str, settings)348}349/// Used for importstr values350pub fn string_to_expr(str: IStr, settings: &ParserSettings) -> LocExpr {351	let len = str.len();352	LocExpr(353		Rc::new(Expr::Str(str)),354		ExprLocation(settings.source.clone(), 0, len as u32),355	)356}357358#[cfg(test)]359pub mod tests {360	use jrsonnet_interner::IStr;361	use BinaryOpType::*;362363	use super::{expr::*, parse};364	use crate::{source::Source, ParserSettings};365366	macro_rules! parse {367		($s:expr) => {368			parse(369				$s,370				&ParserSettings {371					source: Source::new_virtual("<test>".into(), IStr::empty()),372				},373			)374			.unwrap()375		};376	}377378	macro_rules! el {379		($expr:expr, $from:expr, $to:expr$(,)?) => {380			LocExpr(381				std::rc::Rc::new($expr),382				ExprLocation(383					Source::new_virtual("<test>".into(), IStr::empty()),384					$from,385					$to,386				),387			)388		};389	}390391	#[test]392	fn multiline_string() {393		assert_eq!(394			parse!("|||\n    Hello world!\n     a\n|||"),395			el!(Expr::Str("Hello world!\n a\n".into()), 0, 31),396		);397		assert_eq!(398			parse!("|||\n  Hello world!\n   a\n|||"),399			el!(Expr::Str("Hello world!\n a\n".into()), 0, 27),400		);401		assert_eq!(402			parse!("|||\n\t\tHello world!\n\t\t\ta\n|||"),403			el!(Expr::Str("Hello world!\n\ta\n".into()), 0, 27),404		);405		assert_eq!(406			parse!("|||\n   Hello world!\n    a\n |||"),407			el!(Expr::Str("Hello world!\n a\n".into()), 0, 30),408		);409	}410411	#[test]412	fn slice() {413		parse!("a[1:]");414		parse!("a[1::]");415		parse!("a[:1:]");416		parse!("a[::1]");417		parse!("str[:len - 1]");418	}419420	#[test]421	fn string_escaping() {422		assert_eq!(423			parse!(r#""Hello, \"world\"!""#),424			el!(Expr::Str(r#"Hello, "world"!"#.into()), 0, 19),425		);426		assert_eq!(427			parse!(r#"'Hello \'world\'!'"#),428			el!(Expr::Str("Hello 'world'!".into()), 0, 18),429		);430		assert_eq!(parse!(r#"'\\\\'"#), el!(Expr::Str("\\\\".into()), 0, 6));431	}432433	#[test]434	fn string_unescaping() {435		assert_eq!(436			parse!(r#""Hello\nWorld""#),437			el!(Expr::Str("Hello\nWorld".into()), 0, 14),438		);439	}440441	#[test]442	fn string_verbantim() {443		assert_eq!(444			parse!(r#"@"Hello\n""World""""#),445			el!(Expr::Str("Hello\\n\"World\"".into()), 0, 19),446		);447	}448449	#[test]450	fn imports() {451		assert_eq!(452			parse!("import \"hello\""),453			el!(Expr::Import("hello".into()), 0, 14),454		);455		assert_eq!(456			parse!("importstr \"garnish.txt\""),457			el!(Expr::ImportStr("garnish.txt".into()), 0, 23)458		);459		assert_eq!(460			parse!("importbin \"garnish.bin\""),461			el!(Expr::ImportBin("garnish.bin".into()), 0, 23)462		);463	}464465	#[test]466	fn empty_object() {467		assert_eq!(468			parse!("{}"),469			el!(Expr::Obj(ObjBody::MemberList(vec![])), 0, 2)470		);471	}472473	#[test]474	fn basic_math() {475		assert_eq!(476			parse!("2+2*2"),477			el!(478				Expr::BinaryOp(479					el!(Expr::Num(2.0), 0, 1),480					Add,481					el!(482						Expr::BinaryOp(el!(Expr::Num(2.0), 2, 3), Mul, el!(Expr::Num(2.0), 4, 5)),483						2,484						5485					)486				),487				0,488				5489			)490		);491	}492493	#[test]494	fn basic_math_with_indents() {495		assert_eq!(496			parse!("2	+ 	  2	  *	2   	"),497			el!(498				Expr::BinaryOp(499					el!(Expr::Num(2.0), 0, 1),500					Add,501					el!(502						Expr::BinaryOp(el!(Expr::Num(2.0), 7, 8), Mul, el!(Expr::Num(2.0), 13, 14),),503						7,504						14505					),506				),507				0,508				14509			)510		);511	}512513	#[test]514	fn basic_math_parened() {515		assert_eq!(516			parse!("2+(2+2*2)"),517			el!(518				Expr::BinaryOp(519					el!(Expr::Num(2.0), 0, 1),520					Add,521					el!(522						Expr::Parened(el!(523							Expr::BinaryOp(524								el!(Expr::Num(2.0), 3, 4),525								Add,526								el!(527									Expr::BinaryOp(528										el!(Expr::Num(2.0), 5, 6),529										Mul,530										el!(Expr::Num(2.0), 7, 8),531									),532									5,533									8534								),535							),536							3,537							8538						)),539						2,540						9541					),542				),543				0,544				9545			)546		);547	}548549	/// Comments should not affect parsing550	#[test]551	fn comments() {552		assert_eq!(553			parse!("2//comment\n+//comment\n3/*test*/*/*test*/4"),554			el!(555				Expr::BinaryOp(556					el!(Expr::Num(2.0), 0, 1),557					Add,558					el!(559						Expr::BinaryOp(560							el!(Expr::Num(3.0), 22, 23),561							Mul,562							el!(Expr::Num(4.0), 40, 41)563						),564						22,565						41566					)567				),568				0,569				41570			)571		);572	}573574	/// Comments should be able to be escaped575	#[test]576	fn comment_escaping() {577		assert_eq!(578			parse!("2/*\\*/+*/ - 22"),579			el!(580				Expr::BinaryOp(el!(Expr::Num(2.0), 0, 1), Sub, el!(Expr::Num(22.0), 12, 14)),581				0,582				14583			)584		);585	}586587	#[test]588	fn suffix() {589		// assert_eq!(parse!("std.test"), el!(Expr::Num(2.2)));590		// assert_eq!(parse!("std(2)"), el!(Expr::Num(2.2)));591		// assert_eq!(parse!("std.test(2)"), el!(Expr::Num(2.2)));592		// assert_eq!(parse!("a[b]"), el!(Expr::Num(2.2)))593	}594595	#[test]596	fn array_comp() {597		use Expr::*;598		/*599		`ArrComp(Apply(Index(Var("std") from "test.jsonnet":1-4, Var("deepJoin") from "test.jsonnet":5-13) from "test.jsonnet":1-13, ArgsDesc { unnamed: [Var("x") from "test.jsonnet":14-15], named: [] }, false) from "test.jsonnet":1-16, [ForSpec(ForSpecData("x", Var("arr") from "test.jsonnet":26-29))]) from "test.jsonnet":0-30`,600		`ArrComp(Apply(Index(Var("std") from "test.jsonnet":1-4, Str("deepJoin") from "test.jsonnet":5-13) from "test.jsonnet":1-13, ArgsDesc { unnamed: [Var("x") from "test.jsonnet":14-15], named: [] }, false) from "test.jsonnet":1-16, [ForSpec(ForSpecData("x", Var("arr") from "test.jsonnet":26-29))]) from "test.jsonnet":0-30`601				*/602		assert_eq!(603			parse!("[std.deepJoin(x) for x in arr]"),604			el!(605				ArrComp(606					el!(607						Apply(608							el!(609								Index(610									el!(Var("std".into()), 1, 4),611									el!(Str("deepJoin".into()), 5, 13)612								),613								1,614								13615							),616							ArgsDesc::new(vec![el!(Var("x".into()), 14, 15)], vec![]),617							false,618						),619						1,620						16621					),622					vec![CompSpec::ForSpec(ForSpecData(623						Destruct::Full("x".into()),624						el!(Var("arr".into()), 26, 29)625					))]626				),627				0,628				30629			),630		)631	}632633	#[test]634	fn reserved() {635		use Expr::*;636		assert_eq!(parse!("null"), el!(Literal(LiteralType::Null), 0, 4));637		assert_eq!(parse!("nulla"), el!(Var("nulla".into()), 0, 5));638	}639640	#[test]641	fn multiple_args_buf() {642		parse!("a(b, null_fields)");643	}644645	#[test]646	fn infix_precedence() {647		use Expr::*;648		assert_eq!(649			parse!("!a && !b"),650			el!(651				BinaryOp(652					el!(UnaryOp(UnaryOpType::Not, el!(Var("a".into()), 1, 2)), 0, 2),653					And,654					el!(UnaryOp(UnaryOpType::Not, el!(Var("b".into()), 7, 8)), 6, 8)655				),656				0,657				8658			)659		);660	}661662	#[test]663	fn infix_precedence_division() {664		use Expr::*;665		assert_eq!(666			parse!("!a / !b"),667			el!(668				BinaryOp(669					el!(UnaryOp(UnaryOpType::Not, el!(Var("a".into()), 1, 2)), 0, 2),670					Div,671					el!(UnaryOp(UnaryOpType::Not, el!(Var("b".into()), 6, 7)), 5, 7)672				),673				0,674				7675			)676		);677	}678679	#[test]680	fn double_negation() {681		use Expr::*;682		assert_eq!(683			parse!("!!a"),684			el!(685				UnaryOp(686					UnaryOpType::Not,687					el!(UnaryOp(UnaryOpType::Not, el!(Var("a".into()), 2, 3)), 1, 3)688				),689				0,690				3691			)692		)693	}694695	#[test]696	fn array_test_error() {697		parse!("[a for a in b if c for e in f]");698		//                    ^^^^ failed code699	}700701	#[test]702	fn missing_newline_between_comment_and_eof() {703		parse!(704			"{a:1}705706			//+213"707		);708	}709710	#[test]711	fn default_param_before_nondefault() {712		parse!("local x(foo = 'foo', bar) = null; null");713	}714715	#[test]716	fn add_location_info_to_all_sub_expressions() {717		use Expr::*;718719		let file_name = Source::new_virtual("<test>".into(), IStr::empty());720		let expr = parse(721			"{} { local x = 1, x: x } + {}",722			&ParserSettings { source: file_name },723		)724		.unwrap();725		assert_eq!(726			expr,727			el!(728				BinaryOp(729					el!(730						ObjExtend(731							el!(Obj(ObjBody::MemberList(vec![])), 0, 2),732							ObjBody::MemberList(vec![733								Member::BindStmt(BindSpec::Field {734									into: Destruct::Full("x".into()),735									value: el!(Num(1.0), 15, 16)736								}),737								Member::Field(FieldMember {738									name: FieldName::Fixed("x".into()),739									plus: false,740									params: None,741									visibility: Visibility::Normal,742									value: el!(Var("x".into()), 21, 22),743								})744							])745						),746						0,747						24748					),749					BinaryOpType::Add,750					el!(Obj(ObjBody::MemberList(vec![])), 27, 29),751				),752				0,753				29754			),755		);756	}757}