git.delta.rocks / jrsonnet / refs/commits / f44bc09e725c

difftreelog

docs cleanup evaluator's docs

progrm_jarvis2020-08-07parent: #e9a9036.patch.diff
in: master

7 files changed

modifiedcrates/jrsonnet-evaluator/src/builtin/stdlib.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/builtin/stdlib.rs
+++ b/crates/jrsonnet-evaluator/src/builtin/stdlib.rs
@@ -2,7 +2,7 @@
 use std::{path::PathBuf, rc::Rc};
 
 thread_local! {
-	/// To avoid parsing again when issued from same thread
+	/// To avoid parsing again when issued from the same thread
 	#[allow(unreachable_code)]
 	static PARSED_STDLIB: LocExpr = {
 		#[cfg(feature = "codegenerated-stdlib")]
modifiedcrates/jrsonnet-evaluator/src/evaluate.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/evaluate.rs
+++ b/crates/jrsonnet-evaluator/src/evaluate.rs
@@ -545,9 +545,9 @@
 			}
 			Val::Arr(Rc::new(out))
 		}
-		ArrComp(expr, compspecs) => Val::Arr(
-			// First compspec should be forspec, so no "None" possible here
-			Rc::new(evaluate_comp(context, &|ctx| evaluate(ctx, expr), compspecs)?.unwrap()),
+		ArrComp(expr, comp_specs) => Val::Arr(
+			// First comp_spec should be for_spec, so no "None" possible here
+			Rc::new(evaluate_comp(context, &|ctx| evaluate(ctx, expr), comp_specs)?.unwrap()),
 		),
 		Obj(body) => Val::Obj(evaluate_object(context, body)?),
 		ObjExtend(s, t) => evaluate_add_op(
@@ -564,7 +564,7 @@
 				|| "assertion condition".to_owned(),
 				|| {
 					evaluate(context.clone(), &value)?
-						.try_cast_bool("assertion condition should be boolean")
+						.try_cast_bool("assertion condition should be of type `boolean`")
 				},
 			)?;
 			if assertion_result {
@@ -580,7 +580,7 @@
 			|| "error statement".to_owned(),
 			|| {
 				throw!(RuntimeError(
-					evaluate(context, e)?.try_cast_str("error text should be string")?,
+					evaluate(context, e)?.try_cast_str("error text should be of type `string`")?,
 				))
 			},
 		)?,
@@ -590,7 +590,7 @@
 			cond_else,
 		} => {
 			if evaluate(context.clone(), &cond.0)?
-				.try_cast_bool("if condition should be boolean")?
+				.try_cast_bool("if condition should be of type `boolean`")?
 			{
 				evaluate(context, cond_then)?
 			} else {
@@ -603,7 +603,7 @@
 		Import(path) => {
 			let mut tmp = loc
 				.clone()
-				.expect("imports can't be used without loc_data")
+				.expect("imports cannot be used without loc_data")
 				.0;
 			let import_location = Rc::make_mut(&mut tmp);
 			import_location.pop();
@@ -616,7 +616,7 @@
 		ImportStr(path) => {
 			let mut tmp = loc
 				.clone()
-				.expect("imports can't be used without loc_data")
+				.expect("imports cannot be used without loc_data")
 				.0;
 			let import_location = Rc::make_mut(&mut tmp);
 			import_location.pop();
modifiedcrates/jrsonnet-evaluator/src/function.rsdiffbeforeafterboth
before · crates/jrsonnet-evaluator/src/function.rs
1use crate::{error::Error::*, evaluate, lazy_val, resolved_lazy_val, throw, Context, Result, Val};2use closure::closure;3use jrsonnet_parser::{ArgsDesc, ParamsDesc};4use rustc_hash::FxHashMap;5use std::{collections::HashMap, hash::BuildHasherDefault, rc::Rc};67const NO_DEFAULT_CONTEXT: &str =8	"no default context set for call with defined default parameter value";910/// Creates correct [context](Context) for function body evaluation, returning error on invalid call11///12/// * `ctx` used for passed argument expressions execution, and for body execution (if `body_ctx` is not set)13/// * `body_ctx` used for default parameter values execution, and for body execution (if set)14/// * `params` function parameters definition15/// * `args` passed function arguments16/// * `tailstruct` if true - function arguments is eager executed, otherwise - lazy17pub fn parse_function_call(18	ctx: Context,19	body_ctx: Option<Context>,20	params: &ParamsDesc,21	args: &ArgsDesc,22	tailstrict: bool,23) -> Result<Context> {24	let mut out = HashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());25	let mut positioned_args = vec![None; params.0.len()];26	for (id, arg) in args.iter().enumerate() {27		let idx = if let Some(name) = &arg.0 {28			params29				.iter()30				.position(|p| *p.0 == *name)31				.ok_or_else(|| UnknownFunctionParameter(name.clone()))?32		} else {33			id34		};3536		if idx >= params.len() {37			throw!(TooManyArgsFunctionHas(params.len()));38		}39		if positioned_args[idx].is_some() {40			throw!(BindingParameterASecondTime(params[idx].0.clone()));41		}42		positioned_args[idx] = Some(arg.1.clone());43	}44	// Fill defaults45	for (id, p) in params.iter().enumerate() {46		let (ctx, expr) = if let Some(arg) = &positioned_args[id] {47			(ctx.clone(), arg)48		} else if let Some(default) = &p.1 {49			(body_ctx.clone().expect(NO_DEFAULT_CONTEXT), default)50		} else {51			throw!(FunctionParameterNotBoundInCall(p.0.clone()));52		};53		let val = if tailstrict {54			resolved_lazy_val!(evaluate(ctx, expr)?)55		} else {56			lazy_val!(closure!(clone ctx, clone expr, ||evaluate(ctx.clone(), &expr)))57		};58		out.insert(p.0.clone(), val);59	}6061	Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))62}6364pub fn parse_function_call_map(65	ctx: Context,66	body_ctx: Option<Context>,67	params: &ParamsDesc,68	args: &HashMap<Rc<str>, Val>,69	tailstrict: bool,70) -> Result<Context> {71	let mut out = FxHashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());72	let mut positioned_args = vec![None; params.0.len()];73	for (name, val) in args.iter() {74		let idx = params75			.iter()76			.position(|p| *p.0 == **name)77			.ok_or_else(|| UnknownFunctionParameter((&name as &str).to_owned()))?;7879		if idx >= params.len() {80			throw!(TooManyArgsFunctionHas(params.len()));81		}82		if positioned_args[idx].is_some() {83			throw!(BindingParameterASecondTime(params[idx].0.clone()));84		}85		positioned_args[idx] = Some(val.clone());86	}87	// Fill defaults88	for (id, p) in params.iter().enumerate() {89		let val = if let Some(arg) = positioned_args[id].take() {90			resolved_lazy_val!(arg)91		} else if let Some(default) = &p.1 {92			if tailstrict {93				resolved_lazy_val!(evaluate(94					body_ctx.clone().expect(NO_DEFAULT_CONTEXT),95					default96				)?)97			} else {98				let body_ctx = body_ctx.clone();99				let default = default.clone();100				lazy_val!(move || {101					evaluate(body_ctx.clone().expect(NO_DEFAULT_CONTEXT), &default)102				})103			}104		} else {105			throw!(FunctionParameterNotBoundInCall(p.0.clone()));106		};107		out.insert(p.0.clone(), val);108	}109110	Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))111}112113pub(crate) fn place_args(114	ctx: Context,115	body_ctx: Option<Context>,116	params: &ParamsDesc,117	args: &[Val],118) -> Result<Context> {119	let mut out = FxHashMap::with_capacity_and_hasher(params.len(), BuildHasherDefault::default());120	let mut positioned_args = vec![None; params.0.len()];121	for (id, arg) in args.iter().enumerate() {122		if id >= params.len() {123			throw!(TooManyArgsFunctionHas(params.len()));124		}125		positioned_args[id] = Some(arg);126	}127	// Fill defaults128	for (id, p) in params.iter().enumerate() {129		let val = if let Some(arg) = &positioned_args[id] {130			(*arg).clone()131		} else if let Some(default) = &p.1 {132			evaluate(ctx.clone(), default)?133		} else {134			throw!(FunctionParameterNotBoundInCall(p.0.clone()));135		};136		out.insert(p.0.clone(), resolved_lazy_val!(val));137	}138139	Ok(body_ctx.unwrap_or(ctx).extend(out, None, None, None))140}141142#[macro_export]143macro_rules! parse_args {144	($ctx: expr, $fn_name: expr, $args: expr, $total_args: expr, [145		$($id: expr, $name: ident $(: [$($p: path)|+] $(!! $a: path)?)?, $nt: expr);+ $(;)?146	], $handler:block) => {{147		use crate::{throw, error::Error::*};148		let args = $args;149		if args.len() > $total_args {150			throw!(TooManyArgsFunctionHas($total_args));151		}152		$(153			if args.len() <= $id {154				throw!(FunctionParameterNotBoundInCall(stringify!($name).into()));155			}156			let $name = &args[$id];157			if $name.0.is_some() {158				if $name.0.as_ref().unwrap() != stringify!($name) {159					throw!(IntrinsicArgumentReorderingIsNotSupportedYet);160				}161			}162			let $name = evaluate($ctx.clone(), &$name.1)?;163			$(164				match $name {165					$($p(_))|+ => {},166					_ => throw!(TypeMismatch(167						concat!($fn_name, " ", stringify!($id), "nd (", stringify!($name), ") argument"),168						$nt, $name.value_type()?169					)),170				};171				$(172					let $name = match $name {173						$a(v) => v,174						_ =>throw!(TypeMismatch(concat!($fn_name, " ", stringify!($id), "nd (", stringify!($name), ") argument"), $nt, $name.value_type()?)),175					};176				)*177			)*178		)+179		($handler as crate::Result<_>)180	}};181}182183#[test]184fn test() -> Result<()> {185	use crate::val::ValType;186	use jrsonnet_parser::*;187	let state = crate::EvaluationState::default();188	let evaluator = state.with_stdlib();189	let ctx = evaluator.create_default_context()?;190	evaluator.run_in_state(|| {191		parse_args!(ctx, "test", ArgsDesc(vec![192			Arg(None, el!(Expr::Num(2.0))),193			Arg(Some("b".into()), el!(Expr::Num(1.0))),194		]), 2, [195			0, a: [Val::Num]!!Val::Num, vec![ValType::Num];196			1, b: [Val::Num]!!Val::Num, vec![ValType::Num];197		], {198			assert!((a - 2.0).abs() <= f64::EPSILON);199			assert!((b - 1.0).abs() <= f64::EPSILON);200			Ok(())201		})202		.unwrap();203		Ok(())204	})205}
modifiedcrates/jrsonnet-evaluator/src/import.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/import.rs
+++ b/crates/jrsonnet-evaluator/src/import.rs
@@ -9,17 +9,19 @@
 
 /// Implements file resolution logic for `import` and `importStr`
 pub trait ImportResolver {
-	/// Resolve real file path, i.e
-	/// `(/home/user/manifests, b.libsonnet)` can resolve to both `/home/user/manifests/b.libsonnet` and to `/home/user/vendor/b.libsonnet`
-	/// (Where vendor is a library path)
+	/// Resolves real file path, e.g. `(/home/user/manifests, b.libjsonnet)` can correspond
+	/// both to `/home/user/manifests/b.libjsonnet` and to `/home/user/${vendor}/b.libjsonnet`
+	/// where `${vendor}` is a library path.
 	fn resolve_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<PathBuf>>;
+
 	/// Reads file from filesystem, should be used only with path received from `resolve_file`
 	fn load_file_contents(&self, resolved: &PathBuf) -> Result<Rc<str>>;
+
 	/// # Safety
 	///
-	/// For use in bindings, do not try to use it elsewhere
-	/// Implementations, which are not intended to be
-	/// used in bindings, should panic in this method
+	/// For use only in bindings, should not be used elsewhere.
+	/// Implementations which are not intended to be used in bindings
+	/// should panic on call to this method.
 	unsafe fn as_any(&self) -> &dyn Any;
 }
 
@@ -29,12 +31,14 @@
 	fn resolve_file(&self, from: &PathBuf, path: &PathBuf) -> Result<Rc<PathBuf>> {
 		throw!(ImportNotSupported(from.clone(), path.clone()))
 	}
+
 	fn load_file_contents(&self, _resolved: &PathBuf) -> Result<Rc<str>> {
 		// Can be only caused by library direct consumer, not by supplied jsonnet
 		panic!("dummy resolver can't load any file")
 	}
+
 	unsafe fn as_any(&self) -> &dyn Any {
-		panic!("this resolver can't be used as any")
+		panic!("`as_any($self)` is not supported by dummy resolver")
 	}
 }
 impl Default for Box<dyn ImportResolver> {
@@ -46,8 +50,8 @@
 /// File resolver, can load file from both FS and library paths
 #[derive(Default)]
 pub struct FileImportResolver {
-	/// Library directories to search for file
-	/// In original jsonnet referred as jpath
+	/// Library directories to search for file.
+	/// Referred to as `jpath` in original jsonnet implementation.
 	pub library_paths: Vec<PathBuf>,
 }
 impl ImportResolver for FileImportResolver {
@@ -81,7 +85,7 @@
 
 type ResolutionData = (PathBuf, PathBuf);
 
-/// Caches results of underlying resolver implementation
+/// Caches results of the underlying resolver
 pub struct CachingImportResolver {
 	resolution_cache: RefCell<HashMap<ResolutionData, Result<Rc<PathBuf>>>>,
 	loading_cache: RefCell<HashMap<PathBuf, Result<Rc<str>>>>,
@@ -95,6 +99,7 @@
 			.or_insert_with(|| self.inner.resolve_file(from, path))
 			.clone()
 	}
+
 	fn load_file_contents(&self, resolved: &PathBuf) -> Result<Rc<str>> {
 		self.loading_cache
 			.borrow_mut()
modifiedcrates/jrsonnet-evaluator/src/lib.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/lib.rs
+++ b/crates/jrsonnet-evaluator/src/lib.rs
@@ -56,11 +56,11 @@
 }
 
 pub struct EvaluationSettings {
-	/// Limits recursion by limiting stack frames
+	/// Limits recursion by limiting the number of stack frames
 	pub max_stack: usize,
-	/// Limit amount of stack trace items preserved
+	/// Limits amount of stack trace items preserved
 	pub max_trace: usize,
-	/// Used for std.extVar
+	/// Used for s`td.extVar`
 	pub ext_vars: HashMap<Rc<str>, Val>,
 	/// Used for ext.native
 	pub ext_natives: HashMap<Rc<str>, Rc<NativeCallback>>,
@@ -96,10 +96,9 @@
 
 #[derive(Default)]
 struct EvaluationData {
-	/// Used for stack overflow detection, stacktrace is now populated on unwind
+	/// Used for stack overflow detection, stacktrace is populated on unwind
 	stack_depth: usize,
-	/// Contains file source codes and evaluated results for imports and pretty
-	/// printing stacktraces
+	/// Contains file source codes and evaluation results for imports and pretty-printed stacktraces
 	files: HashMap<Rc<PathBuf>, FileData>,
 	str_files: HashMap<Rc<PathBuf>, Rc<str>>,
 }
@@ -118,8 +117,8 @@
 }
 
 thread_local! {
-	/// Contains state for currently executing file
-	/// Global state is fine there
+	/// Contains the state for a currently executed file.
+	/// Global state is fine here.
 	pub(crate) static EVAL_STATE: RefCell<Option<EvaluationState>> = RefCell::new(None)
 }
 pub(crate) fn with_state<T>(f: impl FnOnce(&EvaluationState) -> T) -> T {
@@ -142,7 +141,7 @@
 pub struct EvaluationState(Rc<EvaluationStateInternals>);
 
 impl EvaluationState {
-	/// Parses and adds file to loaded
+	/// Parses and adds files as loaded
 	pub fn add_file(&self, path: Rc<PathBuf>, source_code: Rc<str>) -> Result<()> {
 		self.add_parsed_file(
 			path.clone(),
@@ -264,7 +263,7 @@
 		Context::new().extend_unbound(new_bindings, None, None, None)
 	}
 
-	/// Executes code, creating new stack frame
+	/// Executes code creating a new stack frame
 	pub fn push<T>(
 		&self,
 		e: &ExprLocation,
@@ -294,7 +293,7 @@
 		result
 	}
 
-	/// Runs passed function in state (required, if function needs to modify stack trace)
+	/// Runs passed function in state (required if function needs to modify stack trace)
 	pub fn run_in_state<T>(&self, f: impl FnOnce() -> T) -> T {
 		EVAL_STATE.with(|v| {
 			let has_state = v.borrow().is_some();
@@ -328,7 +327,7 @@
 		self.run_in_state(|| val.manifest_stream(&self.manifest_format()))
 	}
 
-	/// If passed value is function - call with set TLA
+	/// If passed value is function then call with set TLA
 	pub fn with_tla(&self, val: Val) -> Result<Val> {
 		Ok(match val {
 			Val::Func(func) => func.evaluate_map(
@@ -357,7 +356,7 @@
 	}
 }
 
-/// Raw methods evaluates passed values, but not performs TLA execution
+/// Raw methods evaluate passed values but don't perform TLA execution
 impl EvaluationState {
 	pub fn evaluate_file_raw(&self, name: &PathBuf) -> Result<Val> {
 		self.run_in_state(|| self.import_file(&std::env::current_dir().expect("cwd"), &name))
@@ -365,7 +364,7 @@
 	pub fn evaluate_file_raw_nocwd(&self, name: &PathBuf) -> Result<Val> {
 		self.run_in_state(|| self.import_file(&PathBuf::from("."), &name))
 	}
-	/// Parses and evaluates snippet
+	/// Parses and evaluates the given snippet
 	pub fn evaluate_snippet_raw(&self, source: Rc<PathBuf>, code: Rc<str>) -> Result<Val> {
 		let parsed = parse(
 			&code,
@@ -378,7 +377,7 @@
 		self.add_parsed_file(source, code, parsed.clone())?;
 		self.evaluate_expr_raw(parsed)
 	}
-	/// Evaluates parsed expression
+	/// Evaluates the parsed expression
 	pub fn evaluate_expr_raw(&self, code: LocExpr) -> Result<Val> {
 		self.run_in_state(|| evaluate(self.create_default_context()?, &code))
 	}
modifiedcrates/jrsonnet-evaluator/src/trace/mod.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/trace/mod.rs
+++ b/crates/jrsonnet-evaluator/src/trace/mod.rs
@@ -4,13 +4,13 @@
 pub use location::*;
 use std::path::PathBuf;
 
-/// How paths should be displayed
+/// The way paths should be displayed
 pub enum PathResolver {
-	/// Only filename will be shown
+	/// Only filename
 	FileName,
-	/// Absolute path of file
+	/// Absolute path
 	Absolute,
-	/// Relative path from base directory
+	/// Path relative to base directory
 	Relative(PathBuf),
 }
 
@@ -32,7 +32,7 @@
 	}
 }
 
-/// Implements trace to string pretty-printing
+/// Implements pretty-printing of traces
 pub trait TraceFormat {
 	fn write_trace(
 		&self,
@@ -73,7 +73,7 @@
 	Ok(())
 }
 
-/// vanilla jsonnet like formatting
+/// vanilla-like jsonnet formatting
 pub struct CompactFormat {
 	pub resolver: PathResolver,
 	pub padding: usize,
modifiedcrates/jrsonnet-evaluator/src/val.rsdiffbeforeafterboth
--- a/crates/jrsonnet-evaluator/src/val.rs
+++ b/crates/jrsonnet-evaluator/src/val.rs
@@ -225,7 +225,8 @@
 	};
 }
 impl Val {
-	/// Creates Val::Num after checking for overflow. As numbers are f64, we can just check for finity
+	/// Creates `Val::Num` after checking for numeric overflow.
+	/// As numbers are `f64`, we can just check for their finity.
 	pub fn new_checked_num(num: f64) -> Result<Val> {
 		if num.is_finite() {
 			Ok(Val::Num(num))
@@ -379,7 +380,7 @@
 		.map(|s| s.into())
 	}
 
-	/// Calls std.manifestJson
+	/// Calls `std.manifestJson`
 	#[cfg(feature = "faster")]
 	pub fn to_std_json(&self, padding: usize) -> Result<Rc<str>> {
 		manifest_json_ex(
@@ -392,7 +393,7 @@
 		.map(|s| s.into())
 	}
 
-	/// Calls std.manifestJson
+	/// Calls `std.manifestJson`
 	#[cfg(not(feature = "faster"))]
 	pub fn to_std_json(&self, padding: usize) -> Result<Rc<str>> {
 		with_state(|s| {
@@ -444,7 +445,7 @@
 	matches!(val, Val::Func(_))
 }
 
-/// Implements std.primitiveEquals builtin
+/// Native implementation of `std.primitiveEquals`
 pub fn primitive_equals(val_a: &Val, val_b: &Val) -> Result<bool> {
 	Ok(match (val_a.unwrap_if_lazy()?, val_b.unwrap_if_lazy()?) {
 		(Val::Bool(a), Val::Bool(b)) => a == b,
@@ -464,7 +465,7 @@
 	})
 }
 
-/// Native implementation of std.equals
+/// Native implementation of `std.equals`
 pub fn equals(val_a: &Val, val_b: &Val) -> Result<bool> {
 	let val_a = val_a.unwrap_if_lazy()?;
 	let val_b = val_b.unwrap_if_lazy()?;