git.delta.rocks / jrsonnet / refs/commits / 41ef1e2d3380

1use crate::{2	context_creator, create_error, escape_string_json, future_wrapper, lazy_val, manifest_json_ex,3	parse_args, push, with_state, Context, ContextCreator, Error, FuncDesc, LazyBinding, LazyVal,4	ObjMember, ObjValue, Result, Val, ValType,5};6use closure::closure;7use jsonnet_parser::{8	AssertStmt, BinaryOpType, BindSpec, CompSpec, Expr, FieldMember, ForSpecData, IfSpecData,9	LiteralType, LocExpr, Member, ObjBody, ParamsDesc, UnaryOpType, Visibility,10};11use std::{12	collections::{BTreeMap, HashMap},13	rc::Rc,14};1516pub fn evaluate_binding(b: &BindSpec, context_creator: ContextCreator) -> (Rc<str>, LazyBinding) {17	let b = b.clone();18	if let Some(params) = &b.params {19		let params = params.clone();20		(21			b.name.clone(),22			LazyBinding::Bindable(Rc::new(move |this, super_obj| {23				Ok(lazy_val!(24					closure!(clone b, clone params, clone context_creator, || Ok(evaluate_method(25						context_creator.0(this.clone(), super_obj.clone())?,26						params.clone(),27						b.value.clone(),28					)))29				))30			})),31		)32	} else {33		(34			b.name.clone(),35			LazyBinding::Bindable(Rc::new(move |this, super_obj| {36				Ok(lazy_val!(closure!(clone context_creator, clone b, ||37					push(&b.value.1, "thunk", ||{38						evaluate(39							context_creator.0(this.clone(), super_obj.clone())?,40							&b.value41						)42					})43				)))44			})),45		)46	}47}4849pub fn evaluate_method(ctx: Context, params: ParamsDesc, body: LocExpr) -> Val {50	Val::Func(FuncDesc { ctx, params, body })51}5253pub fn evaluate_field_name(54	context: Context,55	field_name: &jsonnet_parser::FieldName,56) -> Result<Option<Rc<str>>> {57	Ok(match field_name {58		jsonnet_parser::FieldName::Fixed(n) => Some(n.clone()),59		jsonnet_parser::FieldName::Dyn(expr) => {60			let lazy = evaluate(context, expr)?;61			let value = lazy.unwrap_if_lazy()?;62			if matches!(value, Val::Null) {63				None64			} else {65				Some(value.try_cast_str("dynamic field name")?)66			}67		}68	})69}7071pub fn evaluate_unary_op(op: UnaryOpType, b: &Val) -> Result<Val> {72	Ok(match (op, b) {73		(o, Val::Lazy(l)) => evaluate_unary_op(o, &l.evaluate()?)?,74		(UnaryOpType::Not, Val::Bool(v)) => Val::Bool(!v),75		(UnaryOpType::Minus, Val::Num(n)) => Val::Num(-*n),76		(UnaryOpType::BitNot, Val::Num(n)) => Val::Num(!(*n as i32) as f64),77		(op, o) => create_error(Error::UnaryOperatorDoesNotOperateOnType(78			op,79			o.value_type()?,80		))?,81	})82}8384pub(crate) fn evaluate_add_op(a: &Val, b: &Val) -> Result<Val> {85	Ok(match (a, b) {86		(Val::Str(v1), Val::Str(v2)) => Val::Str(((**v1).to_owned() + &v2).into()),8788		// Can't use generic json serialization way, because it depends on number to string concatenation (std.jsonnet:890)89		(Val::Num(n), Val::Str(o)) => Val::Str(format!("{}{}", n, o).into()),90		(Val::Str(o), Val::Num(n)) => Val::Str(format!("{}{}", o, n).into()),9192		(Val::Str(s), o) => Val::Str(format!("{}{}", s, o.clone().into_json(0)?).into()),93		(o, Val::Str(s)) => Val::Str(format!("{}{}", o.clone().into_json(0)?, s).into()),9495		(Val::Obj(v1), Val::Obj(v2)) => Val::Obj(v2.with_super(v1.clone())),96		(Val::Arr(a), Val::Arr(b)) => Val::Arr(Rc::new([&a[..], &b[..]].concat())),97		(Val::Num(v1), Val::Num(v2)) => Val::Num(v1 + v2),98		_ => create_error(Error::BinaryOperatorDoesNotOperateOnValues(99			BinaryOpType::Add,100			a.value_type()?,101			b.value_type()?,102		))?,103	})104}105106pub fn evaluate_binary_op_special(107	context: Context,108	a: &LocExpr,109	op: BinaryOpType,110	b: &LocExpr,111) -> Result<Val> {112	Ok(113		match (evaluate(context.clone(), &a)?.unwrap_if_lazy()?, op, b) {114			(Val::Bool(true), BinaryOpType::Or, _o) => Val::Bool(true),115			(Val::Bool(false), BinaryOpType::And, _o) => Val::Bool(false),116			(a, op, eb) => {117				evaluate_binary_op_normal(&a, op, &evaluate(context, eb)?.unwrap_if_lazy()?)?118			}119		},120	)121}122123pub fn evaluate_binary_op_normal(a: &Val, op: BinaryOpType, b: &Val) -> Result<Val> {124	Ok(match (a, op, b) {125		(a, BinaryOpType::Add, b) => evaluate_add_op(a, b)?,126127		(Val::Str(v1), BinaryOpType::Mul, Val::Num(v2)) => Val::Str(v1.repeat(*v2 as usize).into()),128129		// Bool X Bool130		(Val::Bool(a), BinaryOpType::And, Val::Bool(b)) => Val::Bool(*a && *b),131		(Val::Bool(a), BinaryOpType::Or, Val::Bool(b)) => Val::Bool(*a || *b),132133		// Str X Str134		(Val::Str(v1), BinaryOpType::Lt, Val::Str(v2)) => Val::Bool(v1 < v2),135		(Val::Str(v1), BinaryOpType::Gt, Val::Str(v2)) => Val::Bool(v1 > v2),136		(Val::Str(v1), BinaryOpType::Lte, Val::Str(v2)) => Val::Bool(v1 <= v2),137		(Val::Str(v1), BinaryOpType::Gte, Val::Str(v2)) => Val::Bool(v1 >= v2),138139		// Num X Num140		(Val::Num(v1), BinaryOpType::Mul, Val::Num(v2)) => Val::Num(v1 * v2),141		(Val::Num(v1), BinaryOpType::Div, Val::Num(v2)) => {142			if *v2 <= f64::EPSILON {143				create_error(crate::Error::DivisionByZero)?144			}145			Val::Num(v1 / v2)146		}147148		(Val::Num(v1), BinaryOpType::Sub, Val::Num(v2)) => Val::Num(v1 - v2),149150		(Val::Num(v1), BinaryOpType::Lt, Val::Num(v2)) => Val::Bool(v1 < v2),151		(Val::Num(v1), BinaryOpType::Gt, Val::Num(v2)) => Val::Bool(v1 > v2),152		(Val::Num(v1), BinaryOpType::Lte, Val::Num(v2)) => Val::Bool(v1 <= v2),153		(Val::Num(v1), BinaryOpType::Gte, Val::Num(v2)) => Val::Bool(v1 >= v2),154155		(Val::Num(v1), BinaryOpType::BitAnd, Val::Num(v2)) => {156			Val::Num(((*v1 as i32) & (*v2 as i32)) as f64)157		}158		(Val::Num(v1), BinaryOpType::BitOr, Val::Num(v2)) => {159			Val::Num(((*v1 as i32) | (*v2 as i32)) as f64)160		}161		(Val::Num(v1), BinaryOpType::BitXor, Val::Num(v2)) => {162			Val::Num(((*v1 as i32) ^ (*v2 as i32)) as f64)163		}164		(Val::Num(v1), BinaryOpType::Lhs, Val::Num(v2)) => {165			Val::Num(((*v1 as i32) << (*v2 as i32)) as f64)166		}167		(Val::Num(v1), BinaryOpType::Rhs, Val::Num(v2)) => {168			Val::Num(((*v1 as i32) >> (*v2 as i32)) as f64)169		}170171		_ => create_error(Error::BinaryOperatorDoesNotOperateOnValues(172			op,173			a.value_type()?,174			b.value_type()?,175		))?,176	})177}178179future_wrapper!(HashMap<Rc<str>, LazyBinding>, FutureNewBindings);180future_wrapper!(ObjValue, FutureObjValue);181182pub fn evaluate_comp<T>(183	context: Context,184	value: &impl Fn(Context) -> Result<T>,185	specs: &[CompSpec],186) -> Result<Option<Vec<T>>> {187	Ok(match specs.get(0) {188		None => Some(vec![value(context)?]),189		Some(CompSpec::IfSpec(IfSpecData(cond))) => {190			if evaluate(context.clone(), &cond)?.try_cast_bool("if spec")? {191				evaluate_comp(context, value, &specs[1..])?192			} else {193				None194			}195		}196		Some(CompSpec::ForSpec(ForSpecData(var, expr))) => {197			match evaluate(context.clone(), &expr)?.unwrap_if_lazy()? {198				Val::Arr(list) => {199					let mut out = Vec::new();200					for item in list.iter() {201						let item = item.unwrap_if_lazy()?;202						out.push(evaluate_comp(203							context.with_var(var.clone(), item.clone())?,204							value,205							&specs[1..],206						)?);207					}208					Some(out.into_iter().flatten().flatten().collect())209				}210				_ => panic!("for expression evaluated to non-iterable value"),211			}212		}213	})214}215216pub fn evaluate_member_list_object(context: Context, members: &[Member]) -> Result<ObjValue> {217	let new_bindings = FutureNewBindings::new();218	let future_this = FutureObjValue::new();219	let context_creator = context_creator!(220		closure!(clone context, clone new_bindings, |this: Option<ObjValue>, super_obj: Option<ObjValue>| {221			Ok(context.extend_unbound(222				new_bindings.clone().unwrap(),223				context.dollar().clone().or_else(||this.clone()),224				Some(this.unwrap()),225				super_obj226			)?)227		})228	);229	{230		let mut bindings: HashMap<Rc<str>, LazyBinding> = HashMap::new();231		for (n, b) in members232			.iter()233			.filter_map(|m| match m {234				Member::BindStmt(b) => Some(b.clone()),235				_ => None,236			})237			.map(|b| evaluate_binding(&b, context_creator.clone()))238		{239			bindings.insert(n, b);240		}241		new_bindings.fill(bindings);242	}243244	let mut new_members = BTreeMap::new();245	for member in members.iter() {246		match member {247			Member::Field(FieldMember {248				name,249				plus,250				params: None,251				visibility,252				value,253			}) => {254				let name = evaluate_field_name(context.clone(), &name)?;255				if name.is_none() {256					continue;257				}258				let name = name.unwrap();259				new_members.insert(260					name.clone(),261					ObjMember {262						add: *plus,263						visibility: *visibility,264						invoke: LazyBinding::Bindable(Rc::new(265							closure!(clone name, clone value, clone context_creator, |this, super_obj| {266								Ok(LazyVal::new_resolved(push(&value.1, "object field", ||{267									let context = context_creator.0(this, super_obj)?;268									evaluate(269										context,270										&value,271									)272								})?))273							}),274						)),275					},276				);277			}278			Member::Field(FieldMember {279				name,280				params: Some(params),281				value,282				..283			}) => {284				let name = evaluate_field_name(context.clone(), &name)?;285				if name.is_none() {286					continue;287				}288				let name = name.unwrap();289				new_members.insert(290					name,291					ObjMember {292						add: false,293						visibility: Visibility::Hidden,294						invoke: LazyBinding::Bindable(Rc::new(295							closure!(clone value, clone context_creator, clone params, |this, super_obj| {296								// TODO: Assert297								Ok(LazyVal::new_resolved(evaluate_method(298									context_creator.0(this, super_obj)?,299									params.clone(),300									value.clone(),301								)))302							}),303						)),304					},305				);306			}307			Member::BindStmt(_) => {}308			Member::AssertStmt(_) => {}309		}310	}311	Ok(future_this.fill(ObjValue::new(None, Rc::new(new_members))))312}313314pub fn evaluate_object(context: Context, object: &ObjBody) -> Result<ObjValue> {315	Ok(match object {316		ObjBody::MemberList(members) => evaluate_member_list_object(context, &members)?,317		ObjBody::ObjComp(obj) => {318			let future_this = FutureObjValue::new();319			let mut new_members = BTreeMap::new();320			for (k, v) in evaluate_comp(321				context.clone(),322				&|ctx| {323					let new_bindings = FutureNewBindings::new();324					let context_creator = context_creator!(325						closure!(clone context, clone new_bindings, |this: Option<ObjValue>, super_obj: Option<ObjValue>| {326							Ok(context.extend_unbound(327								new_bindings.clone().unwrap(),328								context.dollar().clone().or_else(||this.clone()),329								None,330								super_obj331							)?)332						})333					);334					let mut bindings: HashMap<Rc<str>, LazyBinding> = HashMap::new();335					for (n, b) in obj336						.pre_locals337						.iter()338						.chain(obj.post_locals.iter())339						.map(|b| evaluate_binding(b, context_creator.clone()))340					{341						bindings.insert(n, b);342					}343					let bindings = new_bindings.fill(bindings);344					let ctx = ctx.extend_unbound(bindings, None, None, None)?;345					let key = evaluate(ctx.clone(), &obj.key)?;346					let value = LazyBinding::Bindable(Rc::new(347						closure!(clone ctx, clone obj.value, |this, _super_obj| {348							Ok(LazyVal::new_resolved(evaluate(ctx.extend(HashMap::new(), None, this, None)?, &value)?))349						}),350					));351352					Ok((key, value))353				},354				&obj.compspecs,355			)?356			.unwrap()357			{358				match k {359					Val::Null => {}360					Val::Str(n) => {361						new_members.insert(362							n,363							ObjMember {364								add: false,365								visibility: Visibility::Normal,366								invoke: v,367							},368						);369					}370					v => create_error(Error::FieldMustBeStringGot(v.value_type()?))?,371				}372			}373374			future_this.fill(ObjValue::new(None, Rc::new(new_members)))375		}376	})377}378379pub fn evaluate(context: Context, expr: &LocExpr) -> Result<Val> {380	use Expr::*;381	let LocExpr(expr, loc) = expr;382	Ok(match &**expr {383		Literal(LiteralType::This) => Val::Obj(384			context385				.this()386				.clone()387				.unwrap_or_else(|| panic!("this not found")),388		),389		Literal(LiteralType::Dollar) => Val::Obj(390			context391				.dollar()392				.clone()393				.unwrap_or_else(|| panic!("dollar not found")),394		),395		Literal(LiteralType::True) => Val::Bool(true),396		Literal(LiteralType::False) => Val::Bool(false),397		Literal(LiteralType::Null) => Val::Null,398		Parened(e) => evaluate(context, e)?,399		Str(v) => Val::Str(v.clone()),400		Num(v) => Val::Num(*v),401		BinaryOp(v1, o, v2) => evaluate_binary_op_special(context, &v1, *o, &v2)?,402		UnaryOp(o, v) => evaluate_unary_op(*o, &evaluate(context, v)?)?,403		Var(name) => push(loc, "var", || {404			Ok(Val::Lazy(context.binding(name.clone())?).unwrap_if_lazy()?)405		})?,406		Index(LocExpr(v, _), index) if matches!(&**v, Expr::Literal(LiteralType::Super)) => {407			let name = evaluate(context.clone(), index)?.try_cast_str("object index")?;408			context409				.super_obj()410				.clone()411				.expect("no super found")412				.get_raw(&name, &context.this().clone().expect("no this found"))?413				.expect("value not found")414		}415		Index(value, index) => {416			match (417				evaluate(context.clone(), value)?.unwrap_if_lazy()?,418				evaluate(context, index)?,419			) {420				(Val::Obj(v), Val::Str(s)) => {421					if let Some(v) = v.get(s.clone())? {422						v.unwrap_if_lazy()?423					} else if let Some(Val::Str(n)) = v.get("__intristic_namespace__".into())? {424						Val::Intristic(n, s)425					} else {426						create_error(crate::Error::NoSuchField(s))?427					}428				}429				(Val::Obj(_), n) => create_error(crate::Error::ValueIndexMustBeTypeGot(430					ValType::Obj,431					ValType::Str,432					n.value_type()?,433				))?,434435				(Val::Arr(v), Val::Num(n)) => {436					if n.fract() > f64::EPSILON {437						create_error(crate::Error::FractionalIndex)?438					}439					v.get(n as usize)440						.unwrap_or_else(|| panic!("out of bounds"))441						.clone()442						.unwrap_if_lazy()?443				}444				(Val::Arr(_), Val::Str(n)) => {445					create_error(crate::Error::AttemptedIndexAnArrayWithString(n))?446				}447				(Val::Arr(_), n) => create_error(crate::Error::ValueIndexMustBeTypeGot(448					ValType::Arr,449					ValType::Num,450					n.value_type()?,451				))?,452453				(Val::Str(s), Val::Num(n)) => Val::Str(454					s.chars()455						.skip(n as usize)456						.take(1)457						.collect::<String>()458						.into(),459				),460				(Val::Str(_), n) => create_error(crate::Error::ValueIndexMustBeTypeGot(461					ValType::Str,462					ValType::Num,463					n.value_type()?,464				))?,465466				(v, _) => create_error(crate::Error::CantIndexInto(v.value_type()?))?,467			}468		}469		LocalExpr(bindings, returned) => {470			let mut new_bindings: HashMap<Rc<str>, LazyBinding> = HashMap::new();471			let future_context = Context::new_future();472473			let context_creator = context_creator!(474				closure!(clone future_context, |_, _| Ok(future_context.clone().unwrap()))475			);476477			for (k, v) in bindings478				.iter()479				.map(|b| evaluate_binding(b, context_creator.clone()))480			{481				new_bindings.insert(k, v);482			}483484			let context = context485				.extend_unbound(new_bindings, None, None, None)?486				.into_future(future_context);487			evaluate(context, &returned.clone())?488		}489		Arr(items) => {490			let mut out = Vec::with_capacity(items.len());491			for item in items {492				out.push(Val::Lazy(lazy_val!(493					closure!(clone context, clone item, || {494						evaluate(context.clone(), &item)495					})496				)));497			}498			Val::Arr(Rc::new(out))499		}500		ArrComp(expr, compspecs) => Val::Arr(501			// First compspec should be forspec, so no "None" possible here502			Rc::new(evaluate_comp(context, &|ctx| evaluate(ctx, expr), compspecs)?.unwrap()),503		),504		Obj(body) => Val::Obj(evaluate_object(context, body)?),505		ObjExtend(s, t) => evaluate_add_op(506			&evaluate(context.clone(), s)?,507			&Val::Obj(evaluate_object(context, t)?),508		)?,509		Apply(value, args, tailstrict) => {510			let lazy = evaluate(context.clone(), value)?;511			let value = lazy.unwrap_if_lazy()?;512			match value {513				Val::Intristic(ns, name) => match (&ns as &str, &name as &str) {514					// arr/string/function515					("std", "length") => parse_args!(context, "std.length", args, 1, [516						0, x: [Val::Str|Val::Arr|Val::Obj], vec![ValType::Str, ValType::Arr, ValType::Obj];517					], {518						match x {519							Val::Str(n) => Val::Num(n.chars().count() as f64),520							Val::Arr(i) => Val::Num(i.len() as f64),521							Val::Obj(o) => Val::Num(522								o.fields_visibility()523									.into_iter()524									.filter(|(_k, v)| *v)525									.count() as f64,526							),527							_ => unreachable!(),528						}529					}),530					// any531					("std", "type") => parse_args!(context, "std.type", args, 1, [532						0, x, vec![];533					], {534						Val::Str(x.value_type()?.name().into())535					}),536					// length, idx=>any537					("std", "makeArray") => parse_args!(context, "std.makeArray", args, 2, [538						0, sz: [Val::Num]!!Val::Num, vec![ValType::Num];539						1, func: [Val::Func]!!Val::Func, vec![ValType::Func];540					], {541						assert!(sz >= 0.0);542						let mut out = Vec::with_capacity(sz as usize);543						for i in 0..sz as usize {544							out.push(func.evaluate_values(545								Context::new(),546								&[Val::Num(i as f64)]547							)?)548						}549						Val::Arr(Rc::new(out))550					}),551					// string552					("std", "codepoint") => parse_args!(context, "std.codepoint", args, 1, [553						0, str: [Val::Str]!!Val::Str, vec![ValType::Str];554					], {555						assert!(556							str.chars().count() == 1,557							"std.codepoint should receive single char string"558						);559						Val::Num(str.chars().take(1).next().unwrap() as u32 as f64)560					}),561					// object, includeHidden562					("std", "objectFieldsEx") => {563						parse_args!(context, "std.objectFieldsEx",args, 2, [564							0, obj: [Val::Obj]!!Val::Obj, vec![ValType::Obj];565							1, inc_hidden: [Val::Bool]!!Val::Bool, vec![ValType::Bool];566						], {567							Val::Arr(Rc::new(568								obj.fields_visibility()569									.into_iter()570									.filter(|(_k, v)| *v || inc_hidden)571									.map(|(k, _v)| Val::Str(k))572									.collect(),573							))574						})575					}576					// object, field, includeHidden577					("std", "objectHasEx") => parse_args!(context, "std.objectHasEx", args, 3, [578						0, obj: [Val::Obj]!!Val::Obj, vec![ValType::Obj];579						1, f: [Val::Str]!!Val::Str, vec![ValType::Str];580						2, inc_hidden: [Val::Bool]!!Val::Bool, vec![ValType::Bool];581					], {582						Val::Bool(583							obj.fields_visibility()584								.into_iter()585								.filter(|(_k, v)| *v || inc_hidden)586								.any(|(k, _v)| *k == *f),587						)588					}),589					("std", "primitiveEquals") => {590						parse_args!(context, "std.primitiveEquals", args, 2, [591							0, a, vec![];592							1, b, vec![];593						], {594							Val::Bool(a == b)595						})596					}597					("std", "modulo") => parse_args!(context, "std.modulo", args, 2, [598						0, a: [Val::Num]!!Val::Num, vec![ValType::Num];599						1, b: [Val::Num]!!Val::Num, vec![ValType::Num];600					], {601						Val::Num(a % b)602					}),603					("std", "floor") => parse_args!(context, "std.floor", args, 1, [604						0, x: [Val::Num]!!Val::Num, vec![ValType::Num];605					], {606						Val::Num(x.floor())607					}),608					("std", "trace") => parse_args!(context, "std.trace", args, 2, [609						0, str: [Val::Str]!!Val::Str, vec![ValType::Str];610						1, rest, vec![];611					], {612						// TODO: Line numbers as in original jsonnet613						println!("TRACE: {}", str);614						rest615					}),616					("std", "pow") => parse_args!(context, "std.modulo", args, 2, [617						0, x: [Val::Num]!!Val::Num, vec![ValType::Num];618						1, n: [Val::Num]!!Val::Num, vec![ValType::Num];619					], {620						Val::Num(x.powf(n))621					}),622					("std", "extVar") => parse_args!(context, "std.extVar", args, 2, [623						0, x: [Val::Str]!!Val::Str, vec![ValType::Str];624					], {625						with_state(|s| s.0.ext_vars.borrow().get(&x).cloned()).ok_or_else(626							|| {627								create_error::<()>(crate::Error::UndefinedExternalVariable(x))628									.err()629									.unwrap()630							},631						)?632					}),633					("std", "filter") => parse_args!(context, "std.filter", args, 2, [634						0, func: [Val::Func]!!Val::Func, vec![ValType::Func];635						1, arr: [Val::Arr]!!Val::Arr, vec![ValType::Arr];636					], {637						Val::Arr(Rc::new(638							arr.iter()639								.cloned()640								.filter(|e| {641									func642										.evaluate_values(context.clone(), &[e.clone()])643										.unwrap()644										.try_cast_bool("filter predicate")645										.unwrap()646								})647								.collect(),648						))649					}),650					("std", "char") => parse_args!(context, "std.char", args, 1, [651						0, n: [Val::Num]!!Val::Num, vec![ValType::Num];652					], {653						let mut out = String::new();654						out.push(std::char::from_u32(n as u32).unwrap());655						Val::Str(out.into())656					}),657					("std", "encodeUTF8") => parse_args!(context, "std.encodeUtf8", args, 1, [658						0, str: [Val::Str]!!Val::Str, vec![ValType::Str];659					], {660						Val::Arr(Rc::new(str.bytes().map(|b| Val::Num(b as f64)).collect()))661					}),662					("std", "md5") => parse_args!(context, "std.md5", args, 1, [663						0, str: [Val::Str]!!Val::Str, vec![ValType::Str];664					], {665						Val::Str(format!("{:x}", md5::compute(str.as_bytes())).into())666					}),667					// faster668					("std", "join") => parse_args!(context, "std.join", args, 2, [669						0, sep: [Val::Str|Val::Arr], vec![ValType::Str, ValType::Arr];670						1, arr: [Val::Arr]!!Val::Arr, vec![ValType::Arr];671					], {672						match sep {673							Val::Arr(joiner_items) => {674								let mut out = Vec::new();675676								let mut first = true;677								for item in arr.iter().cloned() {678									if let Val::Arr(items) = item.unwrap_if_lazy()? {679										if !first {680											out.reserve(joiner_items.len());681											out.extend(joiner_items.iter().cloned());682										}683										first = false;684										out.reserve(items.len());685										out.extend(items.iter().cloned());686									} else {687										panic!("all array items should be arrays")688									}689								}690691								Val::Arr(Rc::new(out))692							},693							Val::Str(sep) => {694								let mut out = String::new();695696								let mut first = true;697								for item in arr.iter().cloned() {698									if let Val::Str(item) = item.unwrap_if_lazy()? {699										if !first {700											out += &sep;701										}702										first = false;703										out += &item;704									} else {705										panic!("all array items should be strings")706									}707								}708709								Val::Str(out.into())710							},711							_ => unreachable!()712						}713					}),714					// Faster715					("std", "escapeStringJson") => {716						parse_args!(context, "std.escapeStringJson", args, 1, [717							0, str_: [Val::Str]!!Val::Str, vec![ValType::Str];718						], {719							Val::Str(escape_string_json(&str_).into())720						})721					}722					// Faster723					("std", "manifestJsonEx") => {724						parse_args!(context, "std.manifestJsonEx", args, 2, [725							0, value, vec![];726							1, indent: [Val::Str]!!Val::Str, vec![ValType::Str];727						], {728							Val::Str(manifest_json_ex(&value, &indent)?.into())729						})730					}731					(ns, name) => create_error(crate::error::Error::IntristicNotFound(732						ns.into(),733						name.into(),734					))?,735				},736				Val::Func(f) => {737					let body = || f.evaluate(context, args, *tailstrict);738					if *tailstrict {739						body()?740					} else {741						push(loc, "function call", body)?742					}743				}744				v => create_error(crate::error::Error::OnlyFunctionsCanBeCalledGot(745					v.value_type()?,746				))?,747			}748		}749		Function(params, body) => evaluate_method(context, params.clone(), body.clone()),750		AssertExpr(AssertStmt(value, msg), returned) => {751			let assertion_result = push(&value.1, "assertion condition", || {752				evaluate(context.clone(), &value)?753					.try_cast_bool("assertion condition should be boolean")754			})?;755			if assertion_result {756				evaluate(context, returned)?757			} else if let Some(msg) = msg {758				panic!(759					"assertion failed ({:?}): {}",760					value,761					evaluate(context, msg)?.try_cast_str("assertion message should be string")?762				);763			} else {764				panic!("assertion failed ({:?}): no message", value);765			}766		}767		Error(e) => create_error(crate::Error::RuntimeError(768			evaluate(context, e)?.try_cast_str("error text should be string")?,769		))?,770		IfElse {771			cond,772			cond_then,773			cond_else,774		} => {775			if evaluate(context.clone(), &cond.0)?776				.try_cast_bool("if condition should be boolean")?777			{778				evaluate(context, cond_then)?779			} else {780				match cond_else {781					Some(v) => evaluate(context, v)?,782					None => Val::Null,783				}784			}785		}786		Import(path) => {787			let mut tmp = loc788				.clone()789				.expect("imports can't be used without loc_data")790				.0;791			let import_location = Rc::make_mut(&mut tmp);792			import_location.pop();793			with_state(|s| s.import_file(&import_location, path))?794		}795		ImportStr(path) => {796			let mut tmp = loc797				.clone()798				.expect("imports can't be used without loc_data")799				.0;800			let import_location = Rc::make_mut(&mut tmp);801			import_location.pop();802			Val::Str(with_state(|s| s.import_file_str(&import_location, path))?)803		}804		Literal(LiteralType::Super) => return create_error(crate::error::Error::StandaloneSuper),805	})806}