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authorNadrieril2019-03-20 19:32:27 +0100
committerNadrieril2019-03-20 19:32:27 +0100
commit186eda565954f4b5a155374b9ba00c96cede439f (patch)
tree30fb713bd13ba185aba098c8517b56200b12ee76 /dhall_core
parent4cf23db82c37f4d24ea093e268bb96a1ae1afe3d (diff)
Restore parser performance
Diffstat (limited to 'dhall_core')
-rw-r--r--dhall_core/src/parser.rs392
1 files changed, 82 insertions, 310 deletions
diff --git a/dhall_core/src/parser.rs b/dhall_core/src/parser.rs
index 6718c00..30e3367 100644
--- a/dhall_core/src/parser.rs
+++ b/dhall_core/src/parser.rs
@@ -71,137 +71,7 @@ fn debug_pair(pair: Pair<Rule>) -> String {
s
}
-// #[derive(Debug)]
-// enum IterMatchError<T> {
-// NoMatchFound,
-// Other(T), // Allow other macros to inject their own errors
-// }
-
-// macro_rules! match_iter_typed {
-// // Collect untyped arguments to pass to match_iter!
-// (@collect, ($($vars:tt)*), ($($args:tt)*), ($($acc:tt)*), ($x:ident : $ty:ident, $($rest:tt)*)) => {
-// match_iter_typed!(@collect, ($($vars)*), ($($args)*), ($($acc)*, $x), ($($rest)*))
-// };
-// (@collect, ($($vars:tt)*), ($($args:tt)*), ($($acc:tt)*), ($x:ident.. : $ty:ident, $($rest:tt)*)) => {
-// match_iter_typed!(@collect, ($($vars)*), ($($args)*), ($($acc)*, $x..), ($($rest)*))
-// };
-// // Catch extra comma if exists
-// (@collect, ($($vars:tt)*), ($($args:tt)*), (,$($acc:tt)*), ($(,)*)) => {
-// match_iter_typed!(@collect, ($($vars)*), ($($args)*), ($($acc)*), ())
-// };
-// (@collect, ($iter:expr, $body:expr, $callback:ident, $error:ident), ($($args:tt)*), ($($acc:tt)*), ($(,)*)) => {
-// {
-// let res = iter_patterns::destructure_iter!($iter; [$($acc)*] => {
-// match_iter_typed!(@callback, $callback, $iter, $($args)*);
-// $body
-// });
-// res.ok_or(IterMatchError::NoMatchFound)
-// }
-// };
-
-// // Pass the matches through the callback
-// (@callback, $callback:ident, $iter:expr, $x:ident : $ty:ident $($rest:tt)*) => {
-// let $x = $callback!(@type_callback, $ty, $x);
-// #[allow(unused_mut)]
-// let mut $x = match $x {
-// Ok(x) => x,
-// Err(e) => break Err(IterMatchError::Other(e)),
-// };
-// match_iter_typed!(@callback, $callback, $iter $($rest)*);
-// };
-// (@callback, $callback: ident, $iter:expr, $x:ident.. : $ty:ident $($rest:tt)*) => {
-// let $x = $x.map(|x| $callback!(@type_callback, $ty, x)).collect();
-// let $x: Vec<_> = match $x {
-// Ok(x) => x,
-// Err(e) => break Err(IterMatchError::Other(e)),
-// };
-// #[allow(unused_mut)]
-// let mut $x = $x.into_iter();
-// match_iter_typed!(@callback, $callback, $iter $($rest)*);
-// };
-// (@callback, $callback:ident, $iter:expr $(,)*) => {};
-
-// ($callback:ident; $iter:expr; ($($args:tt)*) => $body:expr) => {
-// {
-// #[allow(unused_mut)]
-// let mut iter = $iter;
-// let res: Result<_, IterMatchError<_>> = loop {
-// break match_iter_typed!(@collect,
-// (iter, $body, $callback, last_error),
-// ($($args)*), (), ($($args)*,)
-// )
-// };
-// res
-// }
-// };
-// }
-
-// macro_rules! match_iter_branching {
-// (@noclone, $callback:ident; $arg:expr; $( $submac:ident!($($args:tt)*) => $body:expr ),* $(,)*) => {
-// {
-// #[allow(unused_assignments)]
-// let mut last_error = IterMatchError::NoMatchFound;
-// // Not a real loop; used for error handling
-// // Would use loop labels but they create warnings
-// #[allow(unreachable_code)]
-// loop {
-// $(
-// let matched: Result<_, IterMatchError<_>> =
-// $callback!(@branch_callback, $submac, $arg; ($($args)*) => $body);
-// #[allow(unused_assignments)]
-// match matched {
-// Ok(v) => break Ok(v),
-// Err(e) => last_error = e,
-// };
-// )*
-// break Err(last_error);
-// }
-// }
-// };
-// ($callback:ident; $iter:expr; $($args:tt)*) => {
-// {
-// #[allow(unused_mut)]
-// let mut iter = $iter;
-// match_iter_branching!(@noclone, $callback; iter.clone(); $($args)*)
-// }
-// };
-// }
-
macro_rules! match_pair {
- // // (@type_callback, parse_any_fast, $x:expr) => {
- // // ParseWrapped::parse_any_fast($x).map(Box::new)
- // // };
- // (@type_callback, $ty:ident, $x:expr) => {
- // ParseUnwrapped::$ty($x)
- // // ParseWrapped::$ty($x).map(|x| x.$ty())
- // // match ParseWrapped::parse_any($x) {
- // // match parse_any_fast($x.clone()) {
- // // // match ParseWrapped::$ty($x.clone()) {
- // // Ok(ParsedValue::$ty(x)) => Ok(x),
- // // // _ => ParseUnwrapped::$ty($x),
- // // _ => Err(custom_parse_error(&$x, format!("Total failure"))),
- // // }
- // };
- // (@branch_callback, children, $pair:expr; $($args:tt)*) => {
- // {
- // #[allow(unused_mut)]
- // let mut pairs = $pair.clone().into_inner();
- // match_iter_typed!(match_pair; pairs; $($args)*)
- // }
- // };
- // (@branch_callback, raw_pair, $pair:expr; ($x:ident) => $body:expr) => {
- // {
- // let $x = $pair.clone();
- // Ok($body)
- // }
- // };
- // (@branch_callback, captured_str, $pair:expr; ($x:ident) => $body:expr) => {
- // {
- // let $x = $pair.as_str();
- // Ok($body)
- // }
- // };
-
(@make_child_match, $pair:expr, ($($outer_acc:tt)*), ($($acc:tt)*), ($(,)* $x:ident : $ty:ident $($rest_of_match:tt)*) => $body:expr, $($rest:tt)*) => {
match_pair!(@make_child_match, $pair, ($($outer_acc)*), ($($acc)*, ParsedValue::$ty($x)), ($($rest_of_match)*) => $body, $($rest)*)
};
@@ -220,9 +90,6 @@ macro_rules! match_pair {
(@make_matches, $pair:expr, ($($acc:tt)*), children!($($args:tt)*) => $body:expr, $($rest:tt)*) => {
match_pair!(@make_child_match, $pair, ($($acc)*), (), ($($args)*) => $body, $($rest)*)
- // (@make_matches, $pair:expr, ($($acc:tt)*), children!($($x:ident : $ty:ident),*) => $body:expr, $($rest:tt)*) => {
- // match_pair!(@make_child_match, $pair, ($($acc)*), ($(, ParsedValue::$ty($x))*), () => $body, $($rest)*)
- // match_pair!(@make_matches, $pair, ([$(ParsedValue::$ty($x)),*] => { $body }, $($acc)*), $($rest)*)
};
(@make_matches, $pair:expr, ($($acc:tt)*), raw_pair!($x:ident) => $body:expr, $($rest:tt)*) => {
match_pair!(@make_matches, $pair, ([..] => {
@@ -249,27 +116,8 @@ macro_rules! match_pair {
}
};
- // ($pair:expr; $( children!($($x:ident : $ty:ident),*) => $body:expr ),* $(,)*) => {
- // match_pair!(@make_matches, $pair, (), $( children!($($x : $ty),*) => $body ),* ,)
- // ($pair:expr; $( children!($($args:tt)*) => $body:expr ),* $(,)*) => {
- // match_pair!(@make_matches, $pair, (), $( children!($($args)*) => $body ),* ,)
($pair:expr; $( $submac:ident!($($args:tt)*) => $body:expr ),* $(,)*) => {
match_pair!(@make_matches, $pair, (), $( $submac!($($args)*) => $body ),* ,)
- // ($pair:expr; $($args:tt)*) => {
- // match_pair!(@make_matches, $pair, (), $($args)*)
- // {
- // let pair = $pair;
- // let rule = pair.as_rule();
- // let err = custom_parse_error(&pair, "No match found".to_owned());
- // let parsed: Vec<_> = pair.into_inner().map(ParseWrapped::parse_any_fast).collect::<Result<_, _>>()?;
- // #[allow(unreachable_code)]
- // iter_patterns::match_vec!(parsed;
- // $(
- // [$(ParsedValue::$ty($x)),*] => { $body },
- // )*
- // [x..] => panic!("Unexpected children while parsing rule '{:?}': {:?}", rule, x.collect::<Vec<_>>()),
- // ).ok_or(err)
- // }
};
($pair:expr; $($args:tt)*) => {
{
@@ -285,11 +133,23 @@ macro_rules! match_pair {
macro_rules! make_parser {
(@branch_rules, $pair:expr, ($($acc:tt)*), rule!( $name:ident<$o:ty>; $($args:tt)* ); $($rest:tt)*) => (
- make_parser!(@branch_rules, $pair, ($($acc)* Rule::$name => ParseWrapped::$name($pair),), $($rest)*)
+ make_parser!(@branch_rules, $pair, ($($acc)* Rule::$name => {
+ ParseWrapped::$name($pair)
+ },), $($rest)*)
);
- (@branch_rules, $pair:expr, ($($acc:tt)*), rule_group!( $name:ident<$o:ty>; $($ty:ident),* ); $($rest:tt)*) => (
- make_parser!(@branch_rules, $pair, ($($acc)* $( Rule::$ty => ParseUnwrapped::$ty($pair).map(ParsedValue::$name),)* ), $($rest)*)
+ (@branch_rules, $pair:expr, ($($acc:tt)*), rule_in_group!( $name:ident<$o:ty>; $group:ident; $($args:tt)* ); $($rest:tt)*) => (
+ make_parser!(@branch_rules, $pair, ($($acc)* Rule::$name => {
+ ParseWrapped::$name($pair).map(|x| x.$name()).map(ParsedValue::$group)
+ },), $($rest)*)
);
+ (@branch_rules, $pair:expr, ($($acc:tt)*), binop!( $name:ident<$o:ty>; $op:ident ); $($rest:tt)*) => (
+ make_parser!(@branch_rules, $pair, ($($acc)* Rule::$name => {
+ parse_binop($pair, BinOp::$op).map(ParsedValue::expression)
+ },), $($rest)*)
+ );
+ // (@branch_rules, $pair:expr, ($($acc:tt)*), rule_group!( $name:ident<$o:ty>; $($ty:ident),* ); $($rest:tt)*) => (
+ // make_parser!(@branch_rules, $pair, ($($acc)* $( Rule::$ty => ParseUnwrapped::$ty($pair).map(ParsedValue::$name),)* ), $($rest)*)
+ // );
(@branch_rules, $pair:expr, ($($acc:tt)*), $submac:ident!( $name:ident<$o:ty>; $($args:tt)* ); $($rest:tt)*) => (
make_parser!(@branch_rules, $pair, ($($acc)*), $($rest)*)
);
@@ -298,7 +158,6 @@ macro_rules! make_parser {
match $pair.as_rule() {
$($acc)*
r => Err(custom_parse_error(&$pair, format!("parse_any_fast: Unexpected {:?}", r))),
- // [x..] => panic!("{:?}", x.collect::<Vec<_>>()),
}
);
($( $submac:ident!( $name:ident<$o:ty>; $($args:tt)* ); )*) => (
@@ -330,7 +189,6 @@ macro_rules! make_parser {
#[derive(Debug)]
enum ParsedValue<'a> {
$( $name($o), )*
- // parse_any(Box<ParsedValue<'a>>),
}
impl<'a> ParsedValue<'a> {
@@ -343,26 +201,8 @@ macro_rules! make_parser {
}
}
)*
- // #[allow(non_snake_case, dead_code)]
- // fn parse_any(self) -> Box<ParsedValue<'a>> {
- // match self {
- // ParsedValue::parse_any(x) => x,
- // x => Box::new(x),
- // }
- // }
- // #[allow(non_snake_case, dead_code)]
- // fn parse_any_fast(self) -> Box<ParsedValue<'a>> {
- // self.parse_any()
- // }
}
- // named!(parse_any<Box<ParsedValue<'a>>>;
- // // self!(x: parse_any_fast) => x,
- // $(
- // self!(x: $name) => Box::new(ParsedValue::$name(x)),
- // )*
- // );
-
impl ParseWrapped {
#[allow(non_snake_case, dead_code)]
fn parse_any_fast(pair: Pair<Rule>) -> ParseResult<ParsedValue> {
@@ -412,46 +252,23 @@ macro_rules! make_pest_parse_function {
);
}
-// macro_rules! named {
-// ($name:ident<$o:ty>; $($args:tt)*) => (
-// make_pest_parse_function!($name<$o>; match_pair!( $($args)* ));
-// );
-// }
-
macro_rules! rule {
($name:ident<$o:ty>; $($args:tt)*) => (
make_pest_parse_function!($name<$o>; match_pair!( $($args)* ));
- // make_pest_parse_function!($name<$o>; match_rule!(
- // Rule::$name => match_pair!( $($args)* ),
- // ));
);
}
-macro_rules! rule_group {
- ($name:ident<$o:ty>; $($ty:ident),*) => (
- // make_pest_parse_function!($name<$o>; match_rule!(
- // $(
- // Rule::$ty => match_pair!(raw_pair!(p) => ParseUnwrapped::$ty(p)?),
- // )*
- // ));
+macro_rules! rule_in_group {
+ ($name:ident<$o:ty>; $group:ident; $($args:tt)*) => (
+ make_pest_parse_function!($name<$o>; match_pair!( $($args)* ));
);
}
-// macro_rules! match_rule {
-// ($pair:expr; $($pat:pat => $submac:ident!( $($args:tt)* ),)*) => {
-// {
-// #[allow(unreachable_patterns)]
-// match $pair.as_rule() {
-// $(
-// $pat => $submac!($pair; $($args)*),
-// )*
-// r => Err(custom_parse_error(&$pair, format!("Unexpected {:?}", r))),
-// }
-// }
-// };
-// }
-
-// List of rules that can be shortcutted as implemented in binop!()
+macro_rules! rule_group {
+ ($name:ident<$o:ty>; $($ty:ident),*) => ();
+}
+
+// List of rules that can be shortcutted as implemented in parse_binop
fn can_be_shortcutted(rule: Rule) -> bool {
use Rule::*;
match rule {
@@ -474,42 +291,43 @@ fn can_be_shortcutted(rule: Rule) -> bool {
}
}
+fn parse_binop(pair: Pair<Rule>, o: BinOp) -> ParseResult<RcExpr> {
+ // This all could be a trivial fold, but to avoid stack explosion
+ // we try to cut down on the recursion level here, by consuming
+ // chains of blah_expression > ... > blih_expression in one go.
+ let mut pair = pair;
+ let mut pairs = pair.into_inner();
+ let first = pairs.next().unwrap();
+ let rest: Vec<_> = pairs.map(ParseUnwrapped::expression).collect::<Result<_, _>>()?;
+ if !rest.is_empty() {
+ // If there is more than one subexpression, handle it normally
+ let first = ParseUnwrapped::expression(first)?;
+ Ok(rest.into_iter().fold(first, |acc, e| bx(Expr::BinOp(o, acc, e))))
+ } else {
+ // Otherwise, consume short-cuttable rules as long as they contain only one subexpression.
+ // println!("short-cutting {}", debug_pair(pair.clone()));
+ pair = first;
+ while can_be_shortcutted(pair.as_rule()) {
+ let mut pairs = pair.clone().into_inner();
+ let first = pairs.next().unwrap();
+ let rest: Vec<_> = pairs.collect();
+ if !rest.is_empty() {
+ break;
+ }
+ pair = first;
+ }
+ // println!("short-cutted {}", debug_pair(pair.clone()));
+ // println!();
+ Ok(ParseUnwrapped::expression(pair)?)
+ }
+}
+
macro_rules! binop {
($rule:ident<$ty:ty>; $op:ident) => {
rule!($rule<$ty>;
raw_pair!(pair) => {
- // This all could be a trivial fold, but to avoid stack explosion
- // we try to cut down on the recursion level here, by consuming
- // chains of blah_expression > ... > blih_expression in one go.
- let mut pair = pair;
- let mut pairs = pair.into_inner();
- let first = pairs.next().unwrap();
- let rest: Vec<_> = pairs.map(ParseUnwrapped::expression).collect::<Result<_, _>>()?;
- if !rest.is_empty() {
- // If there is more than one subexpression, handle it normally
- let first = ParseUnwrapped::expression(first)?;
- rest.into_iter().fold(first, |acc, e| bx(Expr::BinOp(BinOp::$op, acc, e)))
- } else {
- // Otherwise, consume short-cuttable rules as long as they contain only one subexpression.
- // println!("short-cutting {}", debug_pair(pair.clone()));
- pair = first;
- while can_be_shortcutted(pair.as_rule()) {
- let mut pairs = pair.clone().into_inner();
- let first = pairs.next().unwrap();
- let rest: Vec<_> = pairs.collect();
- if !rest.is_empty() {
- break;
- }
- pair = first;
- }
- // println!("short-cutted {}", debug_pair(pair.clone()));
- // println!();
- ParseUnwrapped::expression(pair)?
- }
+ parse_binop(pair, BinOp::$op)?
}
- // children!(first: expression, rest..: expression) => {
- // rest.fold(first, |acc, e| bx(Expr::BinOp(BinOp::$op, acc, e)))
- // }
);
};
}
@@ -517,12 +335,6 @@ macro_rules! binop {
make_parser! {
rule!(EOI<()>; children!() => ());
-// named!(str<&'a str>; captured_str!(s) => s.trim());
-
-// named!(raw_str<&'a str>; captured_str!(s) => s);
-
-// named!(label<Label>; captured_str!(s) => Label::from(s.trim().to_owned()));
-
rule!(label_raw<Label>; captured_str!(s) => Label::from(s.trim().to_owned()));
rule!(double_quote_literal<ParsedText>;
@@ -638,26 +450,21 @@ rule!(path<PathBuf>;
captured_str!(s) => (".".to_owned() + s).into()
);
-rule_group!(local_raw<(FilePrefix, PathBuf)>;
- parent_path,
- here_path,
- home_path,
- absolute_path
-);
+rule_group!(local_raw<(FilePrefix, PathBuf)>;);
-rule!(parent_path<(FilePrefix, PathBuf)>;
+rule_in_group!(parent_path<(FilePrefix, PathBuf)>; local_raw;
children!(p: path) => (FilePrefix::Parent, p)
);
-rule!(here_path<(FilePrefix, PathBuf)>;
+rule_in_group!(here_path<(FilePrefix, PathBuf)>; local_raw;
children!(p: path) => (FilePrefix::Here, p)
);
-rule!(home_path<(FilePrefix, PathBuf)>;
+rule_in_group!(home_path<(FilePrefix, PathBuf)>; local_raw;
children!(p: path) => (FilePrefix::Home, p)
);
-rule!(absolute_path<(FilePrefix, PathBuf)>;
+rule_in_group!(absolute_path<(FilePrefix, PathBuf)>; local_raw;
children!(p: path) => (FilePrefix::Absolute, p)
);
@@ -685,44 +492,9 @@ rule!(import_hashed_raw<(ImportLocation, Option<()>)>;
}
);
-rule_group!(expression<RcExpr>;
- identifier_raw,
- lambda_expression,
- ifthenelse_expression,
- let_expression,
- forall_expression,
- arrow_expression,
- merge_expression,
- empty_collection,
- non_empty_optional,
-
- annotated_expression,
- import_alt_expression,
- or_expression,
- plus_expression,
- text_append_expression,
- list_append_expression,
- and_expression,
- combine_expression,
- prefer_expression,
- combine_types_expression,
- times_expression,
- equal_expression,
- not_equal_expression,
- application_expression,
-
- import_raw,
- selector_expression_raw,
- literal_expression_raw,
- empty_record_type,
- empty_record_literal,
- non_empty_record_type_or_literal,
- union_type_or_literal,
- non_empty_list_literal_raw,
- final_expression
-);
-
-rule!(import_raw<RcExpr>;
+rule_group!(expression<RcExpr>;);
+
+rule_in_group!(import_raw<RcExpr>; expression;
// TODO: handle "as Text"
children!(import: import_hashed_raw) => {
let (location, hash) = import;
@@ -734,19 +506,19 @@ rule!(import_raw<RcExpr>;
}
);
-rule!(lambda_expression<RcExpr>;
+rule_in_group!(lambda_expression<RcExpr>; expression;
children!(l: label_raw, typ: expression, body: expression) => {
bx(Expr::Lam(l, typ, body))
}
);
-rule!(ifthenelse_expression<RcExpr>;
+rule_in_group!(ifthenelse_expression<RcExpr>; expression;
children!(cond: expression, left: expression, right: expression) => {
bx(Expr::BoolIf(cond, left, right))
}
);
-rule!(let_expression<RcExpr>;
+rule_in_group!(let_expression<RcExpr>; expression;
children!(bindings..: let_binding, final_expr: expression) => {
bindings.fold(final_expr, |acc, x| bx(Expr::Let(x.0, x.1, x.2, acc)))
}
@@ -757,19 +529,19 @@ rule!(let_binding<(Label, Option<RcExpr>, RcExpr)>;
children!(name: label_raw, expr: expression) => (name, None, expr),
);
-rule!(forall_expression<RcExpr>;
+rule_in_group!(forall_expression<RcExpr>; expression;
children!(l: label_raw, typ: expression, body: expression) => {
bx(Expr::Pi(l, typ, body))
}
);
-rule!(arrow_expression<RcExpr>;
+rule_in_group!(arrow_expression<RcExpr>; expression;
children!(typ: expression, body: expression) => {
bx(Expr::Pi("_".into(), typ, body))
}
);
-rule!(merge_expression<RcExpr>;
+rule_in_group!(merge_expression<RcExpr>; expression;
children!(x: expression, y: expression, z: expression) => bx(Expr::Merge(x, y, Some(z))),
children!(x: expression, y: expression) => bx(Expr::Merge(x, y, None)),
);
@@ -777,7 +549,7 @@ rule!(merge_expression<RcExpr>;
rule!(List<()>; children!() => ());
rule!(Optional<()>; children!() => ());
-rule!(empty_collection<RcExpr>;
+rule_in_group!(empty_collection<RcExpr>; expression;
children!(_x: List, y: expression) => {
bx(Expr::EmptyListLit(y))
},
@@ -786,7 +558,7 @@ rule!(empty_collection<RcExpr>;
},
);
-rule!(non_empty_optional<RcExpr>;
+rule_in_group!(non_empty_optional<RcExpr>; expression;
children!(x: expression, _y: Optional, z: expression) => {
bx(Expr::OptionalLit(Some(z), Some(x)))
}
@@ -805,14 +577,14 @@ binop!(times_expression<RcExpr>; NaturalTimes);
binop!(equal_expression<RcExpr>; BoolEQ);
binop!(not_equal_expression<RcExpr>; BoolNE);
-rule!(annotated_expression<RcExpr>;
+rule_in_group!(annotated_expression<RcExpr>; expression;
children!(e: expression, annot: expression) => {
bx(Expr::Annot(e, annot))
},
children!(e: expression) => e,
);
-rule!(application_expression<RcExpr>;
+rule_in_group!(application_expression<RcExpr>; expression;
children!(first: expression, rest..: expression) => {
let rest: Vec<_> = rest.collect();
if rest.is_empty() {
@@ -823,7 +595,7 @@ rule!(application_expression<RcExpr>;
}
);
-rule!(selector_expression_raw<RcExpr>;
+rule_in_group!(selector_expression_raw<RcExpr>; expression;
children!(first: expression, rest..: selector_raw) => {
rest.fold(first, |acc, e| bx(Expr::Field(acc, e)))
}
@@ -836,7 +608,7 @@ rule!(selector_raw<Label>;
}
);
-rule!(literal_expression_raw<RcExpr>;
+rule_in_group!(literal_expression_raw<RcExpr>; expression;
children!(n: double_literal_raw) => bx(Expr::DoubleLit(n)),
children!(n: minus_infinity_literal) => bx(Expr::DoubleLit(std::f64::NEG_INFINITY)),
children!(n: plus_infinity_literal) => bx(Expr::DoubleLit(std::f64::INFINITY)),
@@ -848,7 +620,7 @@ rule!(literal_expression_raw<RcExpr>;
children!(e: expression) => e,
);
-rule!(identifier_raw<RcExpr>;
+rule_in_group!(identifier_raw<RcExpr>; expression;
children!(l: label_raw, idx: natural_literal_raw) => {
let name = String::from(l.clone());
match Builtin::parse(name.as_str()) {
@@ -877,15 +649,15 @@ rule!(identifier_raw<RcExpr>;
},
);
-rule!(empty_record_literal<RcExpr>;
+rule_in_group!(empty_record_literal<RcExpr>; expression;
children!() => bx(Expr::RecordLit(BTreeMap::new()))
);
-rule!(empty_record_type<RcExpr>;
+rule_in_group!(empty_record_type<RcExpr>; expression;
children!() => bx(Expr::Record(BTreeMap::new()))
);
-rule!(non_empty_record_type_or_literal<RcExpr>;
+rule_in_group!(non_empty_record_type_or_literal<RcExpr>; expression;
children!(first_label: label_raw, rest: non_empty_record_type) => {
let (first_expr, mut map) = rest;
map.insert(first_label, first_expr);
@@ -918,7 +690,7 @@ rule!(record_literal_entry<(Label, RcExpr)>;
children!(name: label_raw, expr: expression) => (name, expr)
);
-rule!(union_type_or_literal<RcExpr>;
+rule_in_group!(union_type_or_literal<RcExpr>; expression;
children!(_e: empty_union_type) => {
bx(Expr::Union(BTreeMap::new()))
},
@@ -959,13 +731,13 @@ rule!(union_type_entry<(Label, RcExpr)>;
children!(name: label_raw, expr: expression) => (name, expr)
);
-rule!(non_empty_list_literal_raw<RcExpr>;
+rule_in_group!(non_empty_list_literal_raw<RcExpr>; expression;
children!(items..: expression) => {
bx(Expr::NEListLit(items.collect()))
}
);
-rule!(final_expression<RcExpr>;
+rule_in_group!(final_expression<RcExpr>; expression;
children!(e: expression, _eoi: EOI) => e
);
}