Merging debian version 1.65.0+dfsg1-2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

17 files changed, 496 insertions, 335 deletions

diff --git a/vendor/pest_meta/.cargo-checksum.json b/vendor/pest_meta/.cargo-checksum.json
index f51cb5967..5a98eadb3 100644
--- a/vendor/pest_meta/.cargo-checksum.json
+++ b/vendor/pest_meta/.cargo-checksum.json
@@ -1 +1 @@
-{"files":{"Cargo.toml":"adf86f275ddc1ae02311ab5e1b51a165dc034edf466fc74dea6cbe63fe80d9b3","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","_README.md":"e9901b6c4d50403bfda7e08a92b5c395a8c51eba868c7bd07b03e00ccba702f3","src/ast.rs":"b2d0b054d66525b6c9ceed7a9b24cabcdd1074b525b230fc99a1a31019010f58","src/grammar.pest":"fac55bde3f3b59058293d220fec96ef033e61cb24fc032cad21d76aa6f963bc1","src/grammar.rs":"eb8f1f0c964467c081564de8830f3db4966499311868127342b9b651e8cee06f","src/lib.rs":"b248cf6bc5d4a8537f682c23f8d2c8910eb764ee5f1cc02b2c344b0b920943da","src/optimizer/concatenator.rs":"94c2a79d39ebeddbc413d30f2c20d0b50ae2c0e2e86bff90a029b70aa028e2fc","src/optimizer/factorizer.rs":"84df67d6e3f1b507b3e970cb8fba1ab9e2254c3ba778c4a0cf100452b36f1e08","src/optimizer/mod.rs":"69f25916112cbfa4b3d2225f8af463a03ebe706ae757d9c97be523c5601d7b3c","src/optimizer/restorer.rs":"182561b972752ec961fa45d0ca705a9852462010003e4e1ab646e5cd486bedd1","src/optimizer/rotater.rs":"e59f6c3e9197dc3cb4f21edf0c5ffb1a2638a81e4ce9b0373a2d2147a12a3bd5","src/optimizer/skipper.rs":"ab52c7a44a35aefcd1546da5e2084af642c472f07565dcb1be1bb3e2b5fc5a41","src/optimizer/unroller.rs":"99b4940906b0eb443a8b0bf6499130098d59a8141f2693ec50a653cb21c534d5","src/parser.rs":"04a93b2d36bcf199cbc5ab3e943a85cc1730529af83bb3f4a1a9f6b80e2eda4a","src/validator.rs":"5436c0cafc8fa91e45e4988e280220057c8f43ec7a796491abb8e9b22f80582d"},"package":"54be6e404f5317079812fc8f9f5279de376d8856929e21c184ecf6bbd692a11d"}
\ No newline at end of file
+{"files":{"Cargo.toml":"3673efe1bf8eb36b5ae86959a918a846040826779babf8729a2725d651a6d035","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","_README.md":"01ba71f02581f9f5018962e083ca77bc8e8af2b6f8a73111bfa04e847a6440e2","src/ast.rs":"782e31c3e3ad194209975d9515b5df42883f7b7e316cd342e4603bcd5b3ec8d6","src/grammar.pest":"697e32f6fee403c3199317404891481b13dee127b956d6c3ec5a6a6116d18921","src/grammar.rs":"ed08400f1d37fee264359077666a02df0b6ac0d52500040b1157957502ab04ad","src/lib.rs":"8773adeac67a4c7de66f129f0d88fcf88748acc9a44b32949d7e1a3bcd338448","src/optimizer/concatenator.rs":"b77e6ec1d4d79d5383c74435d86e888a048c134fc5cff250356de9405e0ecfab","src/optimizer/factorizer.rs":"ffe510cc8c33fdb89c2a4e575f4d54f7894f126e71e6ae010d9614679d26254e","src/optimizer/lister.rs":"706812c52df72753071bf2db039dffb1061c1a0f030e4c1af67302c632ff15cd","src/optimizer/mod.rs":"18daf1ee2e6789ee4c9afddd34e1081364c7b30b2163ca0c6bf843fee865420e","src/optimizer/restorer.rs":"8b65cfe7dfd4d812bee6ac3cdbcc3d0026e03fd2b456a7c866dd83e6fdbf26a7","src/optimizer/rotater.rs":"7256bc8c01a09c5489fdb8d1cc52461bcc5ccf826db478b1420b01473b9b6c62","src/optimizer/skipper.rs":"8a7cd27713c8ffc795a82471242225b5fbbecec221c75fe8ac48e878d5a6088e","src/optimizer/unroller.rs":"f4010f2bf3b2bb0740d17b04c73f772284f576bfb57b9cac16b98293168ffb7a","src/parser.rs":"11b030a345afb092d1a66cf1481c6653f3d192e585632fbe8fa5641b771e5236","src/validator.rs":"97be65d88cc064c0857deb3ab73c3373560882e454c6ed2cd6a4a9d8d773beaf"},"package":"1538eb784f07615c6d9a8ab061089c6c54a344c5b4301db51990ca1c241e8c04"}
\ No newline at end of file
diff --git a/vendor/pest_meta/Cargo.toml b/vendor/pest_meta/Cargo.toml
index 74f837745..347b7db37 100644
--- a/vendor/pest_meta/Cargo.toml
+++ b/vendor/pest_meta/Cargo.toml
@@ -3,40 +3,46 @@
 # When uploading crates to the registry Cargo will automatically
 # "normalize" Cargo.toml files for maximal compatibility
 # with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies
+# to registry (e.g., crates.io) dependencies.
 #
-# If you believe there's an error in this file please file an
-# issue against the rust-lang/cargo repository. If you're
-# editing this file be aware that the upstream Cargo.toml
-# will likely look very different (and much more reasonable)
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
 
 [package]
+edition = "2018"
+rust-version = "1.56"
 name = "pest_meta"
-version = "2.1.3"
+version = "2.3.0"
 authors = ["Dragoș Tiselice <dragostiselice@gmail.com>"]
 exclude = ["src/grammar.pest"]
-include = ["Cargo.toml", "src/**/*", "src/grammar.rs", "_README.md", "LICENSE-*"]
+include = [
+    "Cargo.toml",
+    "src/**/*",
+    "src/grammar.rs",
+    "_README.md",
+    "LICENSE-*",
+]
 description = "pest meta language parser and validator"
 homepage = "https://pest-parser.github.io/"
 documentation = "https://docs.rs/pest"
 readme = "_README.md"
-keywords = ["pest", "parser", "meta", "optimizer"]
+keywords = [
+    "pest",
+    "parser",
+    "meta",
+    "optimizer",
+]
 categories = ["parsing"]
 license = "MIT/Apache-2.0"
 repository = "https://github.com/pest-parser/pest"
-[dependencies.maplit]
-version = "1.0"
+
+[dependencies.once_cell]
+version = "1.8.0"
 
 [dependencies.pest]
-version = "2.1.0"
+version = "2.3.0"
+
 [build-dependencies.sha-1]
-version = "0.8"
+version = "0.10"
 default-features = false
-[badges.codecov]
-repository = "pest-parser/pest"
-
-[badges.maintenance]
-status = "actively-developed"
-
-[badges.travis-ci]
-repository = "pest-parser/pest"
diff --git a/vendor/pest_meta/_README.md b/vendor/pest_meta/_README.md
index 8e55f29a2..f91188ccb 100644
--- a/vendor/pest_meta/_README.md
+++ b/vendor/pest_meta/_README.md
@@ -1,3 +1,4 @@
+
 <p align="center">
   <img src="https://raw.github.com/pest-parser/pest/master/pest-logo.svg?sanitize=true" width="80%"/>
 </p>
@@ -8,9 +9,10 @@
 [![Book](https://img.shields.io/badge/book-WIP-4d76ae.svg)](https://pest-parser.github.io/book)
 [![Docs](https://docs.rs/pest/badge.svg)](https://docs.rs/pest)
 
-[![Build Status](https://travis-ci.org/pest-parser/pest.svg?branch=master)](https://travis-ci.org/pest-parser/pest)
+[![pest Continuous Integration](https://github.com/pest-parser/pest/actions/workflows/ci.yml/badge.svg)](https://github.com/pest-parser/pest/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/pest-parser/pest/branch/master/graph/badge.svg)](https://codecov.io/gh/pest-parser/pest)
-[![Fuzzit Status](https://app.fuzzit.dev/badge?org_id=pest-parser)](https://app.fuzzit.dev/orgs/pest-parser/dashboard)
+<a href="https://blog.rust-lang.org/2021/11/01/Rust-1.56.1.html"><img alt="Rustc Version 1.56.1+" src="https://img.shields.io/badge/rustc-1.56.1%2B-lightgrey.svg"/></a>
+
 [![Crates.io](https://img.shields.io/crates/d/pest.svg)](https://crates.io/crates/pest)
 [![Crates.io](https://img.shields.io/crates/v/pest.svg)](https://crates.io/crates/pest)
 
@@ -38,7 +40,7 @@ Other helpful resources:
 
 ## Example
 
-The following is an example of a grammar for a list of alpha-numeric identifiers
+The following is an example of a grammar for a list of alphanumeric identifiers
 where the first identifier does not start with a digit:
 
 ```rust
@@ -143,16 +145,18 @@ Digit:   2
 * [pest_meta](https://github.com/pest-parser/pest/blob/master/meta/src/grammar.pest) (bootstrapped)
 * [AshPaper](https://github.com/shnewto/ashpaper)
 * [brain](https://github.com/brain-lang/brain)
-* [Chelone](https://github.com/Aaronepower/chelone)
+* [cicada](https://github.com/mitnk/cicada)
 * [comrak](https://github.com/kivikakk/comrak)
 * [elastic-rs](https://github.com/cch123/elastic-rs)
 * [graphql-parser](https://github.com/Keats/graphql-parser)
 * [handlebars-rust](https://github.com/sunng87/handlebars-rust)
 * [hexdino](https://github.com/Luz/hexdino)
 * [Huia](https://gitlab.com/jimsy/huia/)
+* [insta](https://github.com/mitsuhiko/insta)
 * [jql](https://github.com/yamafaktory/jql)
 * [json5-rs](https://github.com/callum-oakley/json5-rs)
 * [mt940](https://github.com/svenstaro/mt940-rs)
+* [Myoxine](https://github.com/d3bate/myoxine)
 * [py_literal](https://github.com/jturner314/py_literal)
 * [rouler](https://github.com/jarcane/rouler)
 * [RuSh](https://github.com/lwandrebeck/RuSh)
@@ -162,6 +166,17 @@ Digit:   2
 * [ui_gen](https://github.com/emoon/ui_gen)
 * [ukhasnet-parser](https://github.com/adamgreig/ukhasnet-parser)
 * [ZoKrates](https://github.com/ZoKrates/ZoKrates)
+* [Vector](https://github.com/timberio/vector)
+* [AutoCorrect](https://github.com/huacnlee/autocorrect)
+* [yaml-peg](https://github.com/aofdev/yaml-peg)
+* [qubit](https://github.com/abhimanyu003/qubit)
+* [caith](https://github.com/Geobert/caith) (a dice roller crate)
+* [Melody](https://github.com/yoav-lavi/melody)
+
+## Minimum Supported Rust Version (MSRV)
+
+This library should always compile with default features on **Rust 1.56.1** 
+or **Rust 1.61** with `const_prec_climber`.
 
 ## Special thanks
 
diff --git a/vendor/pest_meta/src/ast.rs b/vendor/pest_meta/src/ast.rs
index b80c59630..da6ee5278 100644
--- a/vendor/pest_meta/src/ast.rs
+++ b/vendor/pest_meta/src/ast.rs
@@ -280,7 +280,7 @@ mod tests {
             Box::new(Expr::Str(String::from("a"))),
             Box::new(Expr::Str(String::from("b"))),
         );
-        let mut top_down = expr.clone().iter_top_down();
+        let mut top_down = expr.iter_top_down();
         assert_eq!(top_down.next(), Some(expr));
         assert_eq!(top_down.next(), Some(Expr::Str(String::from("a"))));
         assert_eq!(top_down.next(), Some(Expr::Str(String::from("b"))));
diff --git a/vendor/pest_meta/src/grammar.pest b/vendor/pest_meta/src/grammar.pest
index 0d03ba899..282ca35b8 100644
--- a/vendor/pest_meta/src/grammar.pest
+++ b/vendor/pest_meta/src/grammar.pest
@@ -34,7 +34,7 @@ atomic_modifier          = { "@" }
 compound_atomic_modifier = { "$" }
 non_atomic_modifier      = { "!" }
 
-expression =  { term ~ (infix_operator ~ term)* }
+expression =  { choice_operator? ~ term ~ (infix_operator ~ term)* }
 term       =  { prefix_operator* ~ node ~ postfix_operator* }
 node       = _{ opening_paren ~ expression ~ closing_paren | terminal }
 terminal   = _{ _push | peek_slice | identifier | string | insensitive_string | range }
diff --git a/vendor/pest_meta/src/grammar.rs b/vendor/pest_meta/src/grammar.rs
index bf94a1e3a..e42982b06 100644
--- a/vendor/pest_meta/src/grammar.rs
+++ b/vendor/pest_meta/src/grammar.rs
@@ -1,2 +1,2 @@
 pub struct PestParser;
-# [ allow ( dead_code , non_camel_case_types ) ] # [ derive ( Clone , Copy , Debug , Eq , Hash , Ord , PartialEq , PartialOrd ) ] pub enum Rule { EOI , grammar_rules , grammar_rule , assignment_operator , opening_brace , closing_brace , opening_paren , closing_paren , opening_brack , closing_brack , modifier , silent_modifier , atomic_modifier , compound_atomic_modifier , non_atomic_modifier , expression , term , node , terminal , prefix_operator , infix_operator , postfix_operator , positive_predicate_operator , negative_predicate_operator , sequence_operator , choice_operator , optional_operator , repeat_operator , repeat_once_operator , repeat_exact , repeat_min , repeat_max , repeat_min_max , number , integer , comma , _push , peek_slice , identifier , alpha , alpha_num , string , insensitive_string , range , character , inner_str , inner_chr , escape , code , unicode , hex_digit , quote , single_quote , range_operator , newline , WHITESPACE , block_comment , COMMENT } # [ allow ( clippy :: all ) ] impl :: pest :: Parser < Rule > for PestParser { fn parse < 'i > ( rule : Rule , input : & 'i str ) -> :: std :: result :: Result < :: pest :: iterators :: Pairs < 'i , Rule > , :: pest :: error :: Error < Rule > > { mod rules { pub mod hidden { use super :: super :: Rule ; # [ inline ] # [ allow ( dead_code , non_snake_case , unused_variables ) ] pub fn skip ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { if state . atomicity ( ) == :: pest :: Atomicity :: NonAtomic { state . sequence ( | state | { state . repeat ( | state | super :: visible :: WHITESPACE ( state ) ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: visible :: COMMENT ( state ) . and_then ( | state | { state . repeat ( | state | super :: visible :: WHITESPACE ( state ) ) } ) } ) } ) } ) } ) } else { Ok ( state ) } } } pub mod visible { use super :: super :: Rule ; # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn grammar_rules ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . sequence ( | state | { self :: SOI ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . sequence ( | state | { self :: grammar_rule ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . sequence ( | state | { state . optional ( | state | { self :: grammar_rule ( state ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: hidden :: skip ( state ) . and_then ( | state | { self :: grammar_rule ( state ) } ) } ) } ) } ) } ) } ) } ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: EOI ( state ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn grammar_rule ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: grammar_rule , | state | { state . sequence ( | state | { self :: identifier ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: assignment_operator ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . optional ( | state | { self :: modifier ( state ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: opening_brace ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: expression ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn assignment_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: assignment_operator , | state | { state . match_string ( "=" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn opening_brace ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: opening_brace , | state | { state . match_string ( "{" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn closing_brace ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: closing_brace , | state | { state . match_string ( "}" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn opening_paren ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: opening_paren , | state | { state . match_string ( "(" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn closing_paren ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: closing_paren , | state | { state . match_string ( ")" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn opening_brack ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: opening_brack , | state | { state . match_string ( "[" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn closing_brack ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: closing_brack , | state | { state . match_string ( "]" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn modifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: silent_modifier ( state ) . or_else ( | state | { self :: atomic_modifier ( state ) } ) . or_else ( | state | { self :: compound_atomic_modifier ( state ) } ) . or_else ( | state | { self :: non_atomic_modifier ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn silent_modifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: silent_modifier , | state | { state . match_string ( "_" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn atomic_modifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: atomic_modifier , | state | { state . match_string ( "@" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn compound_atomic_modifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: compound_atomic_modifier , | state | { state . match_string ( "$" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn non_atomic_modifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: non_atomic_modifier , | state | { state . match_string ( "!" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn expression ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: expression , | state | { state . sequence ( | state | { self :: term ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . sequence ( | state | { state . optional ( | state | { state . sequence ( | state | { self :: infix_operator ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: term ( state ) } ) } ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: hidden :: skip ( state ) . and_then ( | state | { state . sequence ( | state | { self :: infix_operator ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: term ( state ) } ) } ) } ) } ) } ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn term ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: term , | state | { state . sequence ( | state | { state . sequence ( | state | { state . optional ( | state | { self :: prefix_operator ( state ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: hidden :: skip ( state ) . and_then ( | state | { self :: prefix_operator ( state ) } ) } ) } ) } ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: node ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . sequence ( | state | { state . optional ( | state | { self :: postfix_operator ( state ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: hidden :: skip ( state ) . and_then ( | state | { self :: postfix_operator ( state ) } ) } ) } ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn node ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . sequence ( | state | { self :: opening_paren ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: expression ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_paren ( state ) } ) } ) . or_else ( | state | { self :: terminal ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn terminal ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: _push ( state ) . or_else ( | state | { self :: peek_slice ( state ) } ) . or_else ( | state | { self :: identifier ( state ) } ) . or_else ( | state | { self :: string ( state ) } ) . or_else ( | state | { self :: insensitive_string ( state ) } ) . or_else ( | state | { self :: range ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn prefix_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: positive_predicate_operator ( state ) . or_else ( | state | { self :: negative_predicate_operator ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn infix_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: sequence_operator ( state ) . or_else ( | state | { self :: choice_operator ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn postfix_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: optional_operator ( state ) . or_else ( | state | { self :: repeat_operator ( state ) } ) . or_else ( | state | { self :: repeat_once_operator ( state ) } ) . or_else ( | state | { self :: repeat_exact ( state ) } ) . or_else ( | state | { self :: repeat_min ( state ) } ) . or_else ( | state | { self :: repeat_max ( state ) } ) . or_else ( | state | { self :: repeat_min_max ( state ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn positive_predicate_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: positive_predicate_operator , | state | { state . match_string ( "&" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn negative_predicate_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: negative_predicate_operator , | state | { state . match_string ( "!" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn sequence_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: sequence_operator , | state | { state . match_string ( "~" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn choice_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: choice_operator , | state | { state . match_string ( "|" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn optional_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: optional_operator , | state | { state . match_string ( "?" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_operator , | state | { state . match_string ( "*" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_once_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_once_operator , | state | { state . match_string ( "+" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_exact ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_exact , | state | { state . sequence ( | state | { self :: opening_brace ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: number ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_min ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_min , | state | { state . sequence ( | state | { self :: opening_brace ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: number ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: comma ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_max ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_max , | state | { state . sequence ( | state | { self :: opening_brace ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: comma ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: number ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn repeat_min_max ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: repeat_min_max , | state | { state . sequence ( | state | { self :: opening_brace ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: number ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: comma ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: number ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn number ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: number , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { state . match_range ( '0' .. '9' ) . and_then ( | state | { state . repeat ( | state | { state . match_range ( '0' .. '9' ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn integer ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: integer , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { self :: number ( state ) . or_else ( | state | { state . sequence ( | state | { state . match_string ( "-" ) . and_then ( | state | { state . repeat ( | state | { state . match_string ( "0" ) } ) } ) . and_then ( | state | { state . match_range ( '1' .. '9' ) } ) . and_then ( | state | { state . optional ( | state | { self :: number ( state ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn comma ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: comma , | state | { state . match_string ( "," ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn _push ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: _push , | state | { state . sequence ( | state | { state . match_string ( "PUSH" ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: opening_paren ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: expression ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_paren ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn peek_slice ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: peek_slice , | state | { state . sequence ( | state | { state . match_string ( "PEEK" ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: opening_brack ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . optional ( | state | { self :: integer ( state ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: range_operator ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . optional ( | state | { self :: integer ( state ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: closing_brack ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn identifier ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: identifier , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { state . lookahead ( false , | state | { state . match_string ( "PUSH" ) } ) . and_then ( | state | { state . match_string ( "_" ) . or_else ( | state | { self :: alpha ( state ) } ) } ) . and_then ( | state | { state . repeat ( | state | { state . match_string ( "_" ) . or_else ( | state | { self :: alpha_num ( state ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn alpha ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . match_range ( 'a' .. 'z' ) . or_else ( | state | { state . match_range ( 'A' .. 'Z' ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn alpha_num ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { self :: alpha ( state ) . or_else ( | state | { state . match_range ( '0' .. '9' ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn string ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . atomic ( :: pest :: Atomicity :: CompoundAtomic , | state | { state . rule ( Rule :: string , | state | { state . sequence ( | state | { self :: quote ( state ) . and_then ( | state | { self :: inner_str ( state ) } ) . and_then ( | state | { self :: quote ( state ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn insensitive_string ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: insensitive_string , | state | { state . sequence ( | state | { state . match_string ( "^" ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: string ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn range ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: range , | state | { state . sequence ( | state | { self :: character ( state ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: range_operator ( state ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: character ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn character ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . atomic ( :: pest :: Atomicity :: CompoundAtomic , | state | { state . rule ( Rule :: character , | state | { state . sequence ( | state | { self :: single_quote ( state ) . and_then ( | state | { self :: inner_chr ( state ) } ) . and_then ( | state | { self :: single_quote ( state ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn inner_str ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: inner_str , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { let strings = [ "\"" , "\\" ] ; state . skip_until ( & strings ) . and_then ( | state | { state . optional ( | state | { state . sequence ( | state | { self :: escape ( state ) . and_then ( | state | { self :: inner_str ( state ) } ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn inner_chr ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: inner_chr , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { self :: escape ( state ) . or_else ( | state | { self :: ANY ( state ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn escape ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: escape , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { state . match_string ( "\\" ) . and_then ( | state | { state . match_string ( "\"" ) . or_else ( | state | { state . match_string ( "\\" ) } ) . or_else ( | state | { state . match_string ( "r" ) } ) . or_else ( | state | { state . match_string ( "n" ) } ) . or_else ( | state | { state . match_string ( "t" ) } ) . or_else ( | state | { state . match_string ( "0" ) } ) . or_else ( | state | { state . match_string ( "'" ) } ) . or_else ( | state | { self :: code ( state ) } ) . or_else ( | state | { self :: unicode ( state ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn code ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: code , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { state . match_string ( "x" ) . and_then ( | state | { self :: hex_digit ( state ) } ) . and_then ( | state | { self :: hex_digit ( state ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn unicode ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: unicode , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . sequence ( | state | { state . match_string ( "u" ) . and_then ( | state | { self :: opening_brace ( state ) } ) . and_then ( | state | { state . sequence ( | state | { self :: hex_digit ( state ) . and_then ( | state | { self :: hex_digit ( state ) } ) . and_then ( | state | { state . optional ( | state | { self :: hex_digit ( state ) } ) } ) . and_then ( | state | { state . optional ( | state | { self :: hex_digit ( state ) } ) } ) . and_then ( | state | { state . optional ( | state | { self :: hex_digit ( state ) } ) } ) . and_then ( | state | { state . optional ( | state | { self :: hex_digit ( state ) } ) } ) } ) } ) . and_then ( | state | { self :: closing_brace ( state ) } ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn hex_digit ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: hex_digit , | state | { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . match_range ( '0' .. '9' ) . or_else ( | state | { state . match_range ( 'a' .. 'f' ) } ) . or_else ( | state | { state . match_range ( 'A' .. 'F' ) } ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn quote ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: quote , | state | { state . match_string ( "\"" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn single_quote ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: single_quote , | state | { state . match_string ( "'" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn range_operator ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: range_operator , | state | { state . match_string ( ".." ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn newline ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . match_string ( "\n" ) . or_else ( | state | { state . match_string ( "\r\n" ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn WHITESPACE ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { state . match_string ( " " ) . or_else ( | state | { state . match_string ( "\t" ) } ) . or_else ( | state | { self :: newline ( state ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn block_comment ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . sequence ( | state | { state . match_string ( "/*" ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . sequence ( | state | { state . optional ( | state | { self :: block_comment ( state ) . or_else ( | state | { state . sequence ( | state | { state . lookahead ( false , | state | { state . match_string ( "*/" ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: ANY ( state ) } ) } ) } ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { super :: hidden :: skip ( state ) . and_then ( | state | { self :: block_comment ( state ) . or_else ( | state | { state . sequence ( | state | { state . lookahead ( false , | state | { state . match_string ( "*/" ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { self :: ANY ( state ) } ) } ) } ) } ) } ) } ) } ) } ) } ) } ) . and_then ( | state | { super :: hidden :: skip ( state ) } ) . and_then ( | state | { state . match_string ( "*/" ) } ) } ) } # [ inline ] # [ allow ( non_snake_case , unused_variables ) ] pub fn COMMENT ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . atomic ( :: pest :: Atomicity :: Atomic , | state | { self :: block_comment ( state ) . or_else ( | state | { state . sequence ( | state | { state . match_string ( "//" ) . and_then ( | state | { state . repeat ( | state | { state . sequence ( | state | { state . lookahead ( false , | state | { self :: newline ( state ) } ) . and_then ( | state | { self :: ANY ( state ) } ) } ) } ) } ) } ) } ) } ) } # [ inline ] # [ allow ( dead_code , non_snake_case , unused_variables ) ] pub fn SOI ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . start_of_input ( ) } # [ inline ] # [ allow ( dead_code , non_snake_case , unused_variables ) ] pub fn ANY ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . skip ( 1 ) } # [ inline ] # [ allow ( dead_code , non_snake_case , unused_variables ) ] pub fn EOI ( state : Box < :: pest :: ParserState < Rule >> ) -> :: pest :: ParseResult < Box < :: pest :: ParserState < Rule >> > { state . rule ( Rule :: EOI , | state | state . end_of_input ( ) ) } } pub use self :: visible :: * ; } :: pest :: state ( input , | state | { match rule { Rule :: grammar_rules => rules :: grammar_rules ( state ) , Rule :: grammar_rule => rules :: grammar_rule ( state ) , Rule :: assignment_operator => rules :: assignment_operator ( state ) , Rule :: opening_brace => rules :: opening_brace ( state ) , Rule :: closing_brace => rules :: closing_brace ( state ) , Rule :: opening_paren => rules :: opening_paren ( state ) , Rule :: closing_paren => rules :: closing_paren ( state ) , Rule :: opening_brack => rules :: opening_brack ( state ) , Rule :: closing_brack => rules :: closing_brack ( state ) , Rule :: modifier => rules :: modifier ( state ) , Rule :: silent_modifier => rules :: silent_modifier ( state ) , Rule :: atomic_modifier => rules :: atomic_modifier ( state ) , Rule :: compound_atomic_modifier => rules :: compound_atomic_modifier ( state ) , Rule :: non_atomic_modifier => rules :: non_atomic_modifier ( state ) , Rule :: expression => rules :: expression ( state ) , Rule :: term => rules :: term ( state ) , Rule :: node => rules :: node ( state ) , Rule :: terminal => rules :: terminal ( state ) , Rule :: prefix_operator => rules :: prefix_operator ( state ) , Rule :: infix_operator => rules :: infix_operator ( state ) , Rule :: postfix_operator => rules :: postfix_operator ( state ) , Rule :: positive_predicate_operator => rules :: positive_predicate_operator ( state ) , Rule :: negative_predicate_operator => rules :: negative_predicate_operator ( state ) , Rule :: sequence_operator => rules :: sequence_operator ( state ) , Rule :: choice_operator => rules :: choice_operator ( state ) , Rule :: optional_operator => rules :: optional_operator ( state ) , Rule :: repeat_operator => rules :: repeat_operator ( state ) , Rule :: repeat_once_operator => rules :: repeat_once_operator ( state ) , Rule :: repeat_exact => rules :: repeat_exact ( state ) , Rule :: repeat_min => rules :: repeat_min ( state ) , Rule :: repeat_max => rules :: repeat_max ( state ) , Rule :: repeat_min_max => rules :: repeat_min_max ( state ) , Rule :: number => rules :: number ( state ) , Rule :: integer => rules :: integer ( state ) , Rule :: comma => rules :: comma ( state ) , Rule :: _push => rules :: _push ( state ) , Rule :: peek_slice => rules :: peek_slice ( state ) , Rule :: identifier => rules :: identifier ( state ) , Rule :: alpha => rules :: alpha ( state ) , Rule :: alpha_num => rules :: alpha_num ( state ) , Rule :: string => rules :: string ( state ) , Rule :: insensitive_string => rules :: insensitive_string ( state ) , Rule :: range => rules :: range ( state ) , Rule :: character => rules :: character ( state ) , Rule :: inner_str => rules :: inner_str ( state ) , Rule :: inner_chr => rules :: inner_chr ( state ) , Rule :: escape => rules :: escape ( state ) , Rule :: code => rules :: code ( state ) , Rule :: unicode => rules :: unicode ( state ) , Rule :: hex_digit => rules :: hex_digit ( state ) , Rule :: quote => rules :: quote ( state ) , Rule :: single_quote => rules :: single_quote ( state ) , Rule :: range_operator => rules :: range_operator ( state ) , Rule :: newline => rules :: newline ( state ) , Rule :: WHITESPACE => rules :: WHITESPACE ( state ) , Rule :: block_comment => rules :: block_comment ( state ) , Rule :: COMMENT => rules :: COMMENT ( state ) , Rule :: EOI => rules :: EOI ( state ) } } ) } }
+# [allow (dead_code , non_camel_case_types , clippy :: upper_case_acronyms)] # [derive (Clone , Copy , Debug , Eq , Hash , Ord , PartialEq , PartialOrd)] pub enum Rule { EOI , grammar_rules , grammar_rule , assignment_operator , opening_brace , closing_brace , opening_paren , closing_paren , opening_brack , closing_brack , modifier , silent_modifier , atomic_modifier , compound_atomic_modifier , non_atomic_modifier , expression , term , node , terminal , prefix_operator , infix_operator , postfix_operator , positive_predicate_operator , negative_predicate_operator , sequence_operator , choice_operator , optional_operator , repeat_operator , repeat_once_operator , repeat_exact , repeat_min , repeat_max , repeat_min_max , number , integer , comma , _push , peek_slice , identifier , alpha , alpha_num , string , insensitive_string , range , character , inner_str , inner_chr , escape , code , unicode , hex_digit , quote , single_quote , range_operator , newline , WHITESPACE , block_comment , COMMENT } # [allow (clippy :: all)] impl :: pest :: Parser < Rule > for PestParser { fn parse < 'i > (rule : Rule , input : & 'i str) -> :: std :: result :: Result < :: pest :: iterators :: Pairs < 'i , Rule > , :: pest :: error :: Error < Rule > > { mod rules { # ! [allow (clippy :: upper_case_acronyms)] pub mod hidden { use super :: super :: Rule ; # [inline] # [allow (dead_code , non_snake_case , unused_variables)] pub fn skip (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { if state . atomicity () == :: pest :: Atomicity :: NonAtomic { state . sequence (| state | { state . repeat (| state | super :: visible :: WHITESPACE (state)) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: visible :: COMMENT (state) . and_then (| state | { state . repeat (| state | super :: visible :: WHITESPACE (state)) }) }) }) }) }) } else { Ok (state) } } } pub mod visible { use super :: super :: Rule ; # [inline] # [allow (non_snake_case , unused_variables)] pub fn grammar_rules (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . sequence (| state | { self :: SOI (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { self :: grammar_rule (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { state . optional (| state | { self :: grammar_rule (state) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { self :: grammar_rule (state) }) }) }) }) }) }) }) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: EOI (state) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn grammar_rule (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: grammar_rule , | state | { state . sequence (| state | { self :: identifier (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: assignment_operator (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . optional (| state | { self :: modifier (state) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: opening_brace (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: expression (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brace (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn assignment_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: assignment_operator , | state | { state . match_string ("=") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn opening_brace (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: opening_brace , | state | { state . match_string ("{") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn closing_brace (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: closing_brace , | state | { state . match_string ("}") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn opening_paren (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: opening_paren , | state | { state . match_string ("(") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn closing_paren (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: closing_paren , | state | { state . match_string (")") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn opening_brack (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: opening_brack , | state | { state . match_string ("[") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn closing_brack (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: closing_brack , | state | { state . match_string ("]") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn modifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: silent_modifier (state) . or_else (| state | { self :: atomic_modifier (state) }) . or_else (| state | { self :: compound_atomic_modifier (state) }) . or_else (| state | { self :: non_atomic_modifier (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn silent_modifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: silent_modifier , | state | { state . match_string ("_") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn atomic_modifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: atomic_modifier , | state | { state . match_string ("@") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn compound_atomic_modifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: compound_atomic_modifier , | state | { state . match_string ("$") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn non_atomic_modifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: non_atomic_modifier , | state | { state . match_string ("!") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn expression (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: expression , | state | { state . sequence (| state | { state . optional (| state | { self :: choice_operator (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: term (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { state . optional (| state | { state . sequence (| state | { self :: infix_operator (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: term (state) }) }) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { state . sequence (| state | { self :: infix_operator (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: term (state) }) }) }) }) }) }) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn term (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: term , | state | { state . sequence (| state | { state . sequence (| state | { state . optional (| state | { self :: prefix_operator (state) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { self :: prefix_operator (state) }) }) }) }) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: node (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { state . optional (| state | { self :: postfix_operator (state) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { self :: postfix_operator (state) }) }) }) }) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn node (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . sequence (| state | { self :: opening_paren (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: expression (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_paren (state) }) }) . or_else (| state | { self :: terminal (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn terminal (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: _push (state) . or_else (| state | { self :: peek_slice (state) }) . or_else (| state | { self :: identifier (state) }) . or_else (| state | { self :: string (state) }) . or_else (| state | { self :: insensitive_string (state) }) . or_else (| state | { self :: range (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn prefix_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: positive_predicate_operator (state) . or_else (| state | { self :: negative_predicate_operator (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn infix_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: sequence_operator (state) . or_else (| state | { self :: choice_operator (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn postfix_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: optional_operator (state) . or_else (| state | { self :: repeat_operator (state) }) . or_else (| state | { self :: repeat_once_operator (state) }) . or_else (| state | { self :: repeat_exact (state) }) . or_else (| state | { self :: repeat_min (state) }) . or_else (| state | { self :: repeat_max (state) }) . or_else (| state | { self :: repeat_min_max (state) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn positive_predicate_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: positive_predicate_operator , | state | { state . match_string ("&") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn negative_predicate_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: negative_predicate_operator , | state | { state . match_string ("!") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn sequence_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: sequence_operator , | state | { state . match_string ("~") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn choice_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: choice_operator , | state | { state . match_string ("|") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn optional_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: optional_operator , | state | { state . match_string ("?") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_operator , | state | { state . match_string ("*") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_once_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_once_operator , | state | { state . match_string ("+") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_exact (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_exact , | state | { state . sequence (| state | { self :: opening_brace (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: number (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brace (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_min (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_min , | state | { state . sequence (| state | { self :: opening_brace (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: number (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: comma (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brace (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_max (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_max , | state | { state . sequence (| state | { self :: opening_brace (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: comma (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: number (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brace (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn repeat_min_max (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: repeat_min_max , | state | { state . sequence (| state | { self :: opening_brace (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: number (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: comma (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: number (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brace (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn number (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: number , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { state . match_range ('0' .. '9') . and_then (| state | { state . repeat (| state | { state . match_range ('0' .. '9') }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn integer (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: integer , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { self :: number (state) . or_else (| state | { state . sequence (| state | { state . match_string ("-") . and_then (| state | { state . repeat (| state | { state . match_string ("0") }) }) . and_then (| state | { state . match_range ('1' .. '9') }) . and_then (| state | { state . optional (| state | { self :: number (state) }) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn comma (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: comma , | state | { state . match_string (",") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn _push (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: _push , | state | { state . sequence (| state | { state . match_string ("PUSH") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: opening_paren (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: expression (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_paren (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn peek_slice (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: peek_slice , | state | { state . sequence (| state | { state . match_string ("PEEK") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: opening_brack (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . optional (| state | { self :: integer (state) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: range_operator (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . optional (| state | { self :: integer (state) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: closing_brack (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn identifier (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: identifier , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { state . lookahead (false , | state | { state . match_string ("PUSH") }) . and_then (| state | { state . match_string ("_") . or_else (| state | { self :: alpha (state) }) }) . and_then (| state | { state . repeat (| state | { state . match_string ("_") . or_else (| state | { self :: alpha_num (state) }) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn alpha (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . match_range ('a' .. 'z') . or_else (| state | { state . match_range ('A' .. 'Z') }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn alpha_num (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { self :: alpha (state) . or_else (| state | { state . match_range ('0' .. '9') }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn string (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . atomic (:: pest :: Atomicity :: CompoundAtomic , | state | { state . rule (Rule :: string , | state | { state . sequence (| state | { self :: quote (state) . and_then (| state | { self :: inner_str (state) }) . and_then (| state | { self :: quote (state) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn insensitive_string (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: insensitive_string , | state | { state . sequence (| state | { state . match_string ("^") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: string (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn range (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: range , | state | { state . sequence (| state | { self :: character (state) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: range_operator (state) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: character (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn character (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . atomic (:: pest :: Atomicity :: CompoundAtomic , | state | { state . rule (Rule :: character , | state | { state . sequence (| state | { self :: single_quote (state) . and_then (| state | { self :: inner_chr (state) }) . and_then (| state | { self :: single_quote (state) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn inner_str (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: inner_str , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { let strings = ["\"" , "\\"] ; state . skip_until (& strings) . and_then (| state | { state . optional (| state | { state . sequence (| state | { self :: escape (state) . and_then (| state | { self :: inner_str (state) }) }) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn inner_chr (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: inner_chr , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { self :: escape (state) . or_else (| state | { self :: ANY (state) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn escape (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: escape , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { state . match_string ("\\") . and_then (| state | { state . match_string ("\"") . or_else (| state | { state . match_string ("\\") }) . or_else (| state | { state . match_string ("r") }) . or_else (| state | { state . match_string ("n") }) . or_else (| state | { state . match_string ("t") }) . or_else (| state | { state . match_string ("0") }) . or_else (| state | { state . match_string ("'") }) . or_else (| state | { self :: code (state) }) . or_else (| state | { self :: unicode (state) }) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn code (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: code , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { state . match_string ("x") . and_then (| state | { self :: hex_digit (state) }) . and_then (| state | { self :: hex_digit (state) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn unicode (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: unicode , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . sequence (| state | { state . match_string ("u") . and_then (| state | { self :: opening_brace (state) }) . and_then (| state | { state . sequence (| state | { self :: hex_digit (state) . and_then (| state | { self :: hex_digit (state) }) . and_then (| state | { state . optional (| state | { self :: hex_digit (state) }) }) . and_then (| state | { state . optional (| state | { self :: hex_digit (state) }) }) . and_then (| state | { state . optional (| state | { self :: hex_digit (state) }) }) . and_then (| state | { state . optional (| state | { self :: hex_digit (state) }) }) }) }) . and_then (| state | { self :: closing_brace (state) }) }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn hex_digit (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: hex_digit , | state | { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . match_range ('0' .. '9') . or_else (| state | { state . match_range ('a' .. 'f') }) . or_else (| state | { state . match_range ('A' .. 'F') }) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn quote (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: quote , | state | { state . match_string ("\"") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn single_quote (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: single_quote , | state | { state . match_string ("'") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn range_operator (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: range_operator , | state | { state . match_string ("..") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn newline (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . match_string ("\n") . or_else (| state | { state . match_string ("\r\n") }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn WHITESPACE (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . atomic (:: pest :: Atomicity :: Atomic , | state | { state . match_string (" ") . or_else (| state | { state . match_string ("\t") }) . or_else (| state | { self :: newline (state) }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn block_comment (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . sequence (| state | { state . match_string ("/*") . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . sequence (| state | { state . optional (| state | { self :: block_comment (state) . or_else (| state | { state . sequence (| state | { state . lookahead (false , | state | { state . match_string ("*/") }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: ANY (state) }) }) }) . and_then (| state | { state . repeat (| state | { state . sequence (| state | { super :: hidden :: skip (state) . and_then (| state | { self :: block_comment (state) . or_else (| state | { state . sequence (| state | { state . lookahead (false , | state | { state . match_string ("*/") }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { self :: ANY (state) }) }) }) }) }) }) }) }) }) }) . and_then (| state | { super :: hidden :: skip (state) }) . and_then (| state | { state . match_string ("*/") }) }) } # [inline] # [allow (non_snake_case , unused_variables)] pub fn COMMENT (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . atomic (:: pest :: Atomicity :: Atomic , | state | { self :: block_comment (state) . or_else (| state | { state . sequence (| state | { state . match_string ("//") . and_then (| state | { state . repeat (| state | { state . sequence (| state | { state . lookahead (false , | state | { self :: newline (state) }) . and_then (| state | { self :: ANY (state) }) }) }) }) }) }) }) } # [inline] # [allow (dead_code , non_snake_case , unused_variables)] pub fn ANY (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . skip (1) } # [inline] # [allow (dead_code , non_snake_case , unused_variables)] pub fn EOI (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . rule (Rule :: EOI , | state | state . end_of_input ()) } # [inline] # [allow (dead_code , non_snake_case , unused_variables)] pub fn SOI (state : :: std :: boxed :: Box < :: pest :: ParserState < Rule >>) -> :: pest :: ParseResult < :: std :: boxed :: Box < :: pest :: ParserState < Rule >> > { state . start_of_input () } } pub use self :: visible :: * ; } :: pest :: state (input , | state | { match rule { Rule :: grammar_rules => rules :: grammar_rules (state) , Rule :: grammar_rule => rules :: grammar_rule (state) , Rule :: assignment_operator => rules :: assignment_operator (state) , Rule :: opening_brace => rules :: opening_brace (state) , Rule :: closing_brace => rules :: closing_brace (state) , Rule :: opening_paren => rules :: opening_paren (state) , Rule :: closing_paren => rules :: closing_paren (state) , Rule :: opening_brack => rules :: opening_brack (state) , Rule :: closing_brack => rules :: closing_brack (state) , Rule :: modifier => rules :: modifier (state) , Rule :: silent_modifier => rules :: silent_modifier (state) , Rule :: atomic_modifier => rules :: atomic_modifier (state) , Rule :: compound_atomic_modifier => rules :: compound_atomic_modifier (state) , Rule :: non_atomic_modifier => rules :: non_atomic_modifier (state) , Rule :: expression => rules :: expression (state) , Rule :: term => rules :: term (state) , Rule :: node => rules :: node (state) , Rule :: terminal => rules :: terminal (state) , Rule :: prefix_operator => rules :: prefix_operator (state) , Rule :: infix_operator => rules :: infix_operator (state) , Rule :: postfix_operator => rules :: postfix_operator (state) , Rule :: positive_predicate_operator => rules :: positive_predicate_operator (state) , Rule :: negative_predicate_operator => rules :: negative_predicate_operator (state) , Rule :: sequence_operator => rules :: sequence_operator (state) , Rule :: choice_operator => rules :: choice_operator (state) , Rule :: optional_operator => rules :: optional_operator (state) , Rule :: repeat_operator => rules :: repeat_operator (state) , Rule :: repeat_once_operator => rules :: repeat_once_operator (state) , Rule :: repeat_exact => rules :: repeat_exact (state) , Rule :: repeat_min => rules :: repeat_min (state) , Rule :: repeat_max => rules :: repeat_max (state) , Rule :: repeat_min_max => rules :: repeat_min_max (state) , Rule :: number => rules :: number (state) , Rule :: integer => rules :: integer (state) , Rule :: comma => rules :: comma (state) , Rule :: _push => rules :: _push (state) , Rule :: peek_slice => rules :: peek_slice (state) , Rule :: identifier => rules :: identifier (state) , Rule :: alpha => rules :: alpha (state) , Rule :: alpha_num => rules :: alpha_num (state) , Rule :: string => rules :: string (state) , Rule :: insensitive_string => rules :: insensitive_string (state) , Rule :: range => rules :: range (state) , Rule :: character => rules :: character (state) , Rule :: inner_str => rules :: inner_str (state) , Rule :: inner_chr => rules :: inner_chr (state) , Rule :: escape => rules :: escape (state) , Rule :: code => rules :: code (state) , Rule :: unicode => rules :: unicode (state) , Rule :: hex_digit => rules :: hex_digit (state) , Rule :: quote => rules :: quote (state) , Rule :: single_quote => rules :: single_quote (state) , Rule :: range_operator => rules :: range_operator (state) , Rule :: newline => rules :: newline (state) , Rule :: WHITESPACE => rules :: WHITESPACE (state) , Rule :: block_comment => rules :: block_comment (state) , Rule :: COMMENT => rules :: COMMENT (state) , Rule :: EOI => rules :: EOI (state) } }) } }
diff --git a/vendor/pest_meta/src/lib.rs b/vendor/pest_meta/src/lib.rs
index 1f9c5bcb6..4e178be6f 100644
--- a/vendor/pest_meta/src/lib.rs
+++ b/vendor/pest_meta/src/lib.rs
@@ -7,9 +7,7 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-#![allow(clippy::range_plus_one)]
-
-extern crate maplit;
+extern crate once_cell;
 #[cfg(test)]
 #[macro_use]
 extern crate pest;
@@ -30,18 +28,19 @@ where
 {
     result.unwrap_or_else(|e| {
         panic!(
-            "grammar error\n\n".to_owned()
-                + &e.into_iter()
-                    .map(|error| format!("{}", error))
-                    .collect::<Vec<_>>()
-                    .join("\n\n")
+            "grammar error\n\n{}",
+            &e.into_iter()
+                .map(|error| format!("{}", error))
+                .collect::<Vec<_>>()
+                .join("\n\n")
         )
     })
 }
 
 #[doc(hidden)]
 pub static UNICODE_PROPERTY_NAMES: &[&str] = &[
-    /* BINARY */ "ALPHABETIC",
+    /* BINARY */
+    "ALPHABETIC",
     "BIDI_CONTROL",
     "CASE_IGNORABLE",
     "CASED",
@@ -93,7 +92,8 @@ pub static UNICODE_PROPERTY_NAMES: &[&str] = &[
     "WHITE_SPACE",
     "XID_CONTINUE",
     "XID_START",
-    /* CATEGORY */ "CASED_LETTER",
+    /* CATEGORY */
+    "CASED_LETTER",
     "CLOSE_PUNCTUATION",
     "CONNECTOR_PUNCTUATION",
     "CONTROL",
diff --git a/vendor/pest_meta/src/optimizer/concatenator.rs b/vendor/pest_meta/src/optimizer/concatenator.rs
index e0aab7bc1..31d3aa531 100644
--- a/vendor/pest_meta/src/optimizer/concatenator.rs
+++ b/vendor/pest_meta/src/optimizer/concatenator.rs
@@ -7,28 +7,27 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 
 pub fn concatenate(rule: Rule) -> Rule {
-    match rule {
-        Rule { name, ty, expr } => Rule {
-            name,
-            ty,
-            expr: expr.map_bottom_up(|expr| {
-                if ty == RuleType::Atomic {
-                    // TODO: Use box syntax when it gets stabilized.
-                    match expr {
-                        Expr::Seq(lhs, rhs) => match (*lhs, *rhs) {
-                            (Expr::Str(lhs), Expr::Str(rhs)) => Expr::Str(lhs + &rhs),
-                            (Expr::Insens(lhs), Expr::Insens(rhs)) => Expr::Insens(lhs + &rhs),
-                            (lhs, rhs) => Expr::Seq(Box::new(lhs), Box::new(rhs)),
-                        },
-                        expr => expr,
-                    }
-                } else {
-                    expr
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: expr.map_bottom_up(|expr| {
+            if ty == RuleType::Atomic {
+                // TODO: Use box syntax when it gets stabilized.
+                match expr {
+                    Expr::Seq(lhs, rhs) => match (*lhs, *rhs) {
+                        (Expr::Str(lhs), Expr::Str(rhs)) => Expr::Str(lhs + &rhs),
+                        (Expr::Insens(lhs), Expr::Insens(rhs)) => Expr::Insens(lhs + &rhs),
+                        (lhs, rhs) => Expr::Seq(Box::new(lhs), Box::new(rhs)),
+                    },
+                    expr => expr,
                 }
-            }),
-        },
+            } else {
+                expr
+            }
+        }),
     }
 }
diff --git a/vendor/pest_meta/src/optimizer/factorizer.rs b/vendor/pest_meta/src/optimizer/factorizer.rs
index 236289e14..5481870bf 100644
--- a/vendor/pest_meta/src/optimizer/factorizer.rs
+++ b/vendor/pest_meta/src/optimizer/factorizer.rs
@@ -7,32 +7,45 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 
 pub fn factor(rule: Rule) -> Rule {
-    match rule {
-        Rule { name, ty, expr } => Rule {
-            name,
-            ty,
-            expr: expr.map_top_down(|expr| {
-                // TODO: Use box syntax when it gets stabilized.
-                match expr {
-                    Expr::Choice(lhs, rhs) => match (*lhs, *rhs) {
-                        (Expr::Seq(l1, r1), Expr::Seq(l2, r2)) => {
-                            if l1 == l2 {
-                                Expr::Seq(l1, Box::new(Expr::Choice(r1, r2)))
-                            } else {
-                                Expr::Choice(
-                                    Box::new(Expr::Seq(l1, r1)),
-                                    Box::new(Expr::Seq(l2, r2)),
-                                )
-                            }
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: expr.map_top_down(|expr| {
+            // TODO: Use box syntax when it gets stabilized.
+            match expr {
+                Expr::Choice(lhs, rhs) => match (*lhs, *rhs) {
+                    (Expr::Seq(l1, r1), Expr::Seq(l2, r2)) => {
+                        if l1 == l2 {
+                            Expr::Seq(l1, Box::new(Expr::Choice(r1, r2)))
+                        } else {
+                            Expr::Choice(Box::new(Expr::Seq(l1, r1)), Box::new(Expr::Seq(l2, r2)))
                         }
-                        (lhs, rhs) => Expr::Choice(Box::new(lhs), Box::new(rhs)),
-                    },
-                    expr => expr,
-                }
-            }),
-        },
+                    }
+                    // Converts `(rule ~ rest) | rule` to `rule ~ rest?`, avoiding trying to match `rule` twice.
+                    (Expr::Seq(l1, l2), r) => {
+                        if *l1 == r {
+                            Expr::Seq(l1, Box::new(Expr::Opt(l2)))
+                        } else {
+                            Expr::Choice(Box::new(Expr::Seq(l1, l2)), Box::new(r))
+                        }
+                    }
+                    // Converts `rule | (rule ~ rest)` to `rule` since `(rule ~ rest)`
+                    // will never match if `rule` didn't.
+                    (l, Expr::Seq(r1, r2)) => {
+                        if l == *r1 {
+                            l
+                        } else {
+                            Expr::Choice(Box::new(l), Box::new(Expr::Seq(r1, r2)))
+                        }
+                    }
+                    (lhs, rhs) => Expr::Choice(Box::new(lhs), Box::new(rhs)),
+                },
+                expr => expr,
+            }
+        }),
     }
 }
diff --git a/vendor/pest_meta/src/optimizer/lister.rs b/vendor/pest_meta/src/optimizer/lister.rs
new file mode 100644
index 000000000..e19885032
--- /dev/null
+++ b/vendor/pest_meta/src/optimizer/lister.rs
@@ -0,0 +1,42 @@
+// pest. The Elegant Parser
+// Copyright (c) 2018 Dragoș Tiselice
+//
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT
+// license <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. All files in the project carrying such notice may not be copied,
+// modified, or distributed except according to those terms.
+
+use crate::ast::*;
+
+pub fn list(rule: Rule) -> Rule {
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: expr.map_bottom_up(|expr| {
+            // TODO: Use box syntax when it gets stabilized.
+            match expr {
+                Expr::Seq(l, r) => match *l {
+                    Expr::Rep(l) => {
+                        let l = *l;
+                        match l {
+                            Expr::Seq(l1, l2) => {
+                                // Converts `(rule ~ rest)* ~ rule` to `rule ~ (rest ~ rule)*`,
+                                // avoiding matching the last `rule` twice.
+                                if l1 == r {
+                                    Expr::Seq(l1, Box::new(Expr::Rep(Box::new(Expr::Seq(l2, r)))))
+                                } else {
+                                    Expr::Seq(Box::new(Expr::Rep(Box::new(Expr::Seq(l1, l2)))), r)
+                                }
+                            }
+                            expr => Expr::Seq(Box::new(Expr::Rep(Box::new(expr))), r),
+                        }
+                    }
+                    expr => Expr::Seq(Box::new(expr), r),
+                },
+                expr => expr,
+            }
+        }),
+    }
+}
diff --git a/vendor/pest_meta/src/optimizer/mod.rs b/vendor/pest_meta/src/optimizer/mod.rs
index 7013c43f9..e0cbdb0de 100644
--- a/vendor/pest_meta/src/optimizer/mod.rs
+++ b/vendor/pest_meta/src/optimizer/mod.rs
@@ -7,7 +7,7 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 use std::collections::HashMap;
 
 #[cfg(test)]
@@ -20,6 +20,7 @@ macro_rules! box_tree {
 
 mod concatenator;
 mod factorizer;
+mod lister;
 mod restorer;
 mod rotater;
 mod skipper;
@@ -33,6 +34,7 @@ pub fn optimize(rules: Vec<Rule>) -> Vec<OptimizedRule> {
         .map(unroller::unroll)
         .map(concatenator::concatenate)
         .map(factorizer::factor)
+        .map(lister::list)
         .map(rule_to_optimized_rule)
         .collect();
 
@@ -279,7 +281,7 @@ mod tests {
     #[test]
     fn rotate() {
         let rules = {
-            use ast::Expr::*;
+            use crate::ast::Expr::*;
             vec![Rule {
                 name: "rule".to_owned(),
                 ty: RuleType::Normal,
@@ -293,7 +295,7 @@ mod tests {
             }]
         };
         let rotated = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Normal,
@@ -313,7 +315,7 @@ mod tests {
     #[test]
     fn skip() {
         let rules = {
-            use ast::Expr::*;
+            use crate::ast::Expr::*;
             vec![Rule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -335,7 +337,7 @@ mod tests {
     #[test]
     fn concat_strings() {
         let rules = {
-            use ast::Expr::*;
+            use crate::ast::Expr::*;
             vec![Rule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -362,7 +364,7 @@ mod tests {
             expr: Expr::RepExact(Box::new(Expr::Ident(String::from("a"))), 3),
         }];
         let unrolled = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -384,7 +386,7 @@ mod tests {
             expr: Expr::RepMax(Box::new(Expr::Str("a".to_owned())), 3),
         }];
         let unrolled = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -406,7 +408,7 @@ mod tests {
             expr: Expr::RepMin(Box::new(Expr::Str("a".to_owned())), 2),
         }];
         let unrolled = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -428,7 +430,7 @@ mod tests {
             expr: Expr::RepMinMax(Box::new(Expr::Str("a".to_owned())), 2, 3),
         }];
         let unrolled = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -452,7 +454,7 @@ mod tests {
     #[test]
     fn concat_insensitive_strings() {
         let rules = {
-            use ast::Expr::*;
+            use crate::ast::Expr::*;
             vec![Rule {
                 name: "rule".to_owned(),
                 ty: RuleType::Atomic,
@@ -474,7 +476,7 @@ mod tests {
     #[test]
     fn long_common_sequence() {
         let rules = {
-            use ast::Expr::*;
+            use crate::ast::Expr::*;
             vec![Rule {
                 name: "rule".to_owned(),
                 ty: RuleType::Silent,
@@ -491,7 +493,7 @@ mod tests {
             }]
         };
         let optimized = {
-            use optimizer::OptimizedExpr::*;
+            use crate::optimizer::OptimizedExpr::*;
             vec![OptimizedRule {
                 name: "rule".to_owned(),
                 ty: RuleType::Silent,
@@ -507,4 +509,82 @@ mod tests {
 
         assert_eq!(optimize(rules), optimized);
     }
+
+    #[test]
+    fn short_common_sequence() {
+        let rules = {
+            use crate::ast::Expr::*;
+            vec![Rule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Choice(
+                    Seq(Ident(String::from("a")), Ident(String::from("b"))),
+                    Ident(String::from("a"))
+                )),
+            }]
+        };
+        let optimized = {
+            use crate::optimizer::OptimizedExpr::*;
+            vec![OptimizedRule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Seq(Ident(String::from("a")), Opt(Ident(String::from("b"))))),
+            }]
+        };
+
+        assert_eq!(optimize(rules), optimized);
+    }
+
+    #[test]
+    fn impossible_common_sequence() {
+        let rules = {
+            use crate::ast::Expr::*;
+            vec![Rule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Choice(
+                    Ident(String::from("a")),
+                    Seq(Ident(String::from("a")), Ident(String::from("b")))
+                )),
+            }]
+        };
+        let optimized = {
+            use crate::optimizer::OptimizedExpr::*;
+            vec![OptimizedRule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Ident(String::from("a"))),
+            }]
+        };
+
+        assert_eq!(optimize(rules), optimized);
+    }
+
+    #[test]
+    fn lister() {
+        let rules = {
+            use crate::ast::Expr::*;
+            vec![Rule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Seq(
+                    Rep(Seq(Ident(String::from("a")), Ident(String::from("b")))),
+                    Ident(String::from("a"))
+                )),
+            }]
+        };
+        let optimized = {
+            use crate::optimizer::OptimizedExpr::*;
+            vec![OptimizedRule {
+                name: "rule".to_owned(),
+                ty: RuleType::Silent,
+                expr: box_tree!(Seq(
+                    Ident(String::from("a")),
+                    Rep(Seq(Ident(String::from("b")), Ident(String::from("a"))))
+                )),
+            }]
+        };
+
+        assert_eq!(optimize(rules), optimized);
+    }
 }
diff --git a/vendor/pest_meta/src/optimizer/restorer.rs b/vendor/pest_meta/src/optimizer/restorer.rs
index 34a710eab..e128e03f1 100644
--- a/vendor/pest_meta/src/optimizer/restorer.rs
+++ b/vendor/pest_meta/src/optimizer/restorer.rs
@@ -8,19 +8,15 @@
 // modified, or distributed except according to those terms.
 use std::collections::HashMap;
 
-use optimizer::*;
+use crate::optimizer::*;
 
 pub fn restore_on_err(
     rule: OptimizedRule,
     rules: &HashMap<String, OptimizedExpr>,
 ) -> OptimizedRule {
-    match rule {
-        OptimizedRule { name, ty, expr } => {
-            let expr = expr.map_bottom_up(|expr| wrap_branching_exprs(expr, rules));
-
-            OptimizedRule { name, ty, expr }
-        }
-    }
+    let OptimizedRule { name, ty, expr } = rule;
+    let expr = expr.map_bottom_up(|expr| wrap_branching_exprs(expr, rules));
+    OptimizedRule { name, ty, expr }
 }
 
 fn wrap_branching_exprs(
@@ -96,7 +92,7 @@ fn child_modifies_state(
 #[cfg(test)]
 mod tests {
     use super::*;
-    use optimizer::OptimizedExpr::*;
+    use crate::optimizer::OptimizedExpr::*;
 
     #[test]
     fn restore_no_stack_children() {
diff --git a/vendor/pest_meta/src/optimizer/rotater.rs b/vendor/pest_meta/src/optimizer/rotater.rs
index 3588738ad..7a7d8fba4 100644
--- a/vendor/pest_meta/src/optimizer/rotater.rs
+++ b/vendor/pest_meta/src/optimizer/rotater.rs
@@ -7,7 +7,7 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 
 pub fn rotate(rule: Rule) -> Rule {
     fn rotate_internal(expr: Expr) -> Expr {
@@ -35,11 +35,10 @@ pub fn rotate(rule: Rule) -> Rule {
         }
     }
 
-    match rule {
-        Rule { name, ty, expr } => Rule {
-            name,
-            ty,
-            expr: expr.map_top_down(rotate_internal),
-        },
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: expr.map_top_down(rotate_internal),
     }
 }
diff --git a/vendor/pest_meta/src/optimizer/skipper.rs b/vendor/pest_meta/src/optimizer/skipper.rs
index f55edc06f..40bc5a16f 100644
--- a/vendor/pest_meta/src/optimizer/skipper.rs
+++ b/vendor/pest_meta/src/optimizer/skipper.rs
@@ -7,7 +7,7 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 
 pub fn skip(rule: Rule) -> Rule {
     fn populate_choices(expr: Expr, mut choices: Vec<String>) -> Option<Expr> {
@@ -28,30 +28,29 @@ pub fn skip(rule: Rule) -> Rule {
         }
     }
 
-    match rule {
-        Rule { name, ty, expr } => Rule {
-            name,
-            ty,
-            expr: if ty == RuleType::Atomic {
-                expr.map_top_down(|expr| {
-                    // TODO: Use box syntax when it gets stabilized.
-                    if let Expr::Rep(expr) = expr.clone() {
-                        if let Expr::Seq(lhs, rhs) = *expr.clone() {
-                            if let (Expr::NegPred(expr), Expr::Ident(ident)) = (*lhs, *rhs) {
-                                if ident == "ANY" {
-                                    if let Some(expr) = populate_choices(*expr, vec![]) {
-                                        return expr;
-                                    }
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: if ty == RuleType::Atomic {
+            expr.map_top_down(|expr| {
+                // TODO: Use box syntax when it gets stabilized.
+                if let Expr::Rep(expr) = expr.clone() {
+                    if let Expr::Seq(lhs, rhs) = *expr {
+                        if let (Expr::NegPred(expr), Expr::Ident(ident)) = (*lhs, *rhs) {
+                            if ident == "ANY" {
+                                if let Some(expr) = populate_choices(*expr, vec![]) {
+                                    return expr;
                                 }
                             }
                         }
-                    };
+                    }
+                };
 
-                    expr
-                })
-            } else {
                 expr
-            },
+            })
+        } else {
+            expr
         },
     }
 }
diff --git a/vendor/pest_meta/src/optimizer/unroller.rs b/vendor/pest_meta/src/optimizer/unroller.rs
index fff17336d..e3c360d90 100644
--- a/vendor/pest_meta/src/optimizer/unroller.rs
+++ b/vendor/pest_meta/src/optimizer/unroller.rs
@@ -7,61 +7,60 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
-use ast::*;
+use crate::ast::*;
 
 pub fn unroll(rule: Rule) -> Rule {
-    match rule {
-        Rule { name, ty, expr } => Rule {
-            name,
-            ty,
-            expr: expr.map_bottom_up(|expr| match expr {
-                Expr::RepOnce(expr) => Expr::Seq(expr.clone(), Box::new(Expr::Rep(expr))),
-                Expr::RepExact(expr, num) => (1..num + 1)
-                    .map(|_| *expr.clone())
-                    .rev()
-                    .fold(None, |rep, expr| match rep {
-                        None => Some(expr),
-                        Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
-                    })
-                    .unwrap(),
-                Expr::RepMin(expr, min) => (1..min + 2)
-                    .map(|i| {
-                        if i <= min {
-                            *expr.clone()
-                        } else {
-                            Expr::Rep(expr.clone())
-                        }
-                    })
-                    .rev()
-                    .fold(None, |rep, expr| match rep {
-                        None => Some(expr),
-                        Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
-                    })
-                    .unwrap(),
-                Expr::RepMax(expr, max) => (1..max + 1)
-                    .map(|_| Expr::Opt(expr.clone()))
-                    .rev()
-                    .fold(None, |rep, expr| match rep {
-                        None => Some(expr),
-                        Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
-                    })
-                    .unwrap(),
-                Expr::RepMinMax(expr, min, max) => (1..max + 1)
-                    .map(|i| {
-                        if i <= min {
-                            *expr.clone()
-                        } else {
-                            Expr::Opt(expr.clone())
-                        }
-                    })
-                    .rev()
-                    .fold(None, |rep, expr| match rep {
-                        None => Some(expr),
-                        Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
-                    })
-                    .unwrap(),
-                expr => expr,
-            }),
-        },
+    let Rule { name, ty, expr } = rule;
+    Rule {
+        name,
+        ty,
+        expr: expr.map_bottom_up(|expr| match expr {
+            Expr::RepOnce(expr) => Expr::Seq(expr.clone(), Box::new(Expr::Rep(expr))),
+            Expr::RepExact(expr, num) => (1..num + 1)
+                .map(|_| *expr.clone())
+                .rev()
+                .fold(None, |rep, expr| match rep {
+                    None => Some(expr),
+                    Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
+                })
+                .unwrap(),
+            Expr::RepMin(expr, min) => (1..min + 2)
+                .map(|i| {
+                    if i <= min {
+                        *expr.clone()
+                    } else {
+                        Expr::Rep(expr.clone())
+                    }
+                })
+                .rev()
+                .fold(None, |rep, expr| match rep {
+                    None => Some(expr),
+                    Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
+                })
+                .unwrap(),
+            Expr::RepMax(expr, max) => (1..max + 1)
+                .map(|_| Expr::Opt(expr.clone()))
+                .rev()
+                .fold(None, |rep, expr| match rep {
+                    None => Some(expr),
+                    Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
+                })
+                .unwrap(),
+            Expr::RepMinMax(expr, min, max) => (1..max + 1)
+                .map(|i| {
+                    if i <= min {
+                        *expr.clone()
+                    } else {
+                        Expr::Opt(expr.clone())
+                    }
+                })
+                .rev()
+                .fold(None, |rep, expr| match rep {
+                    None => Some(expr),
+                    Some(rep) => Some(Expr::Seq(Box::new(expr), Box::new(rep))),
+                })
+                .unwrap(),
+            expr => expr,
+        }),
     }
 }
diff --git a/vendor/pest_meta/src/parser.rs b/vendor/pest_meta/src/parser.rs
index 5f6f3b374..72abd810d 100644
--- a/vendor/pest_meta/src/parser.rs
+++ b/vendor/pest_meta/src/parser.rs
@@ -15,10 +15,14 @@ use pest::iterators::{Pair, Pairs};
 use pest::prec_climber::{Assoc, Operator, PrecClimber};
 use pest::{Parser, Span};
 
-use ast::{Expr, Rule as AstRule, RuleType};
-use validator;
+use crate::ast::{Expr, Rule as AstRule, RuleType};
+use crate::validator;
 
-include!("grammar.rs");
+mod grammar {
+    include!("grammar.rs");
+}
+
+pub use self::grammar::*;
 
 pub fn parse(rule: Rule, data: &str) -> Result<Pairs<Rule>, Error<Rule>> {
     PestParser::parse(rule, data)
@@ -125,13 +129,9 @@ pub enum ParserExpr<'i> {
 }
 
 fn convert_rule(rule: ParserRule) -> AstRule {
-    match rule {
-        ParserRule { name, ty, node, .. } => {
-            let expr = convert_node(node);
-
-            AstRule { name, ty, expr }
-        }
-    }
+    let ParserRule { name, ty, node, .. } = rule;
+    let expr = convert_node(node);
+    AstRule { name, ty, expr }
 }
 
 fn convert_node(node: ParserNode) -> Expr {
@@ -174,9 +174,7 @@ pub fn consume_rules(pairs: Pairs<Rule>) -> Result<Vec<AstRule>, Vec<Error<Rule>
     }
 }
 
-fn consume_rules_with_spans<'i>(
-    pairs: Pairs<'i, Rule>,
-) -> Result<Vec<ParserRule<'i>>, Vec<Error<Rule>>> {
+fn consume_rules_with_spans(pairs: Pairs<Rule>) -> Result<Vec<ParserRule>, Vec<Error<Rule>>> {
     let climber = PrecClimber::new(vec![
         Operator::new(Rule::choice_operator, Assoc::Left),
         Operator::new(Rule::sequence_operator, Assoc::Left),
@@ -206,7 +204,13 @@ fn consume_rules_with_spans<'i>(
 
             pairs.next().unwrap(); // opening_brace
 
-            let node = consume_expr(pairs.next().unwrap().into_inner().peekable(), &climber)?;
+            // skip initial infix operators
+            let mut inner_nodes = pairs.next().unwrap().into_inner().peekable();
+            if inner_nodes.peek().unwrap().as_rule() == Rule::choice_operator {
+                inner_nodes.next().unwrap();
+            }
+
+            let node = consume_expr(inner_nodes, &climber)?;
 
             Ok(ParserRule {
                 name,
@@ -617,6 +621,8 @@ fn unescape(string: &str) -> Option<String> {
 
 #[cfg(test)]
 mod tests {
+    use std::convert::TryInto;
+
     use super::super::unwrap_or_report;
     use super::*;
 
@@ -1073,7 +1079,7 @@ mod tests {
             parser: PestParser,
             input: "a = {}",
             rule: Rule::grammar_rules,
-            positives: vec![Rule::term],
+            positives: vec![Rule::expression],
             negatives: vec![],
             pos: 5
         };
@@ -1092,6 +1098,18 @@ mod tests {
     }
 
     #[test]
+    fn incorrect_prefix() {
+        fails_with! {
+            parser: PestParser,
+            input: "a = { ~ b}",
+            rule: Rule::grammar_rules,
+            positives: vec![Rule::expression],
+            negatives: vec![],
+            pos: 6
+        };
+    }
+
+    #[test]
     fn wrong_op() {
         fails_with! {
             parser: PestParser,
@@ -1228,7 +1246,7 @@ mod tests {
 
         let pairs = PestParser::parse(Rule::grammar_rules, input).unwrap();
         let ast = consume_rules_with_spans(pairs).unwrap();
-        let ast: Vec<_> = ast.into_iter().map(|rule| convert_rule(rule)).collect();
+        let ast: Vec<_> = ast.into_iter().map(convert_rule).collect();
 
         assert_eq!(
             ast,
@@ -1266,7 +1284,7 @@ mod tests {
 
         let pairs = PestParser::parse(Rule::grammar_rules, input).unwrap();
         let ast = consume_rules_with_spans(pairs).unwrap();
-        let ast: Vec<_> = ast.into_iter().map(|rule| convert_rule(rule)).collect();
+        let ast: Vec<_> = ast.into_iter().map(convert_rule).collect();
 
         assert_eq!(
             ast,
@@ -1485,4 +1503,45 @@ mod tests {
 
         assert_eq!(unescape(string), None);
     }
+
+    #[test]
+    fn handles_deep_nesting() {
+        let sample1 = include_str!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/resources/test/fuzzsample1.grammar"
+        ));
+        let sample2 = include_str!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/resources/test/fuzzsample2.grammar"
+        ));
+        let sample3 = include_str!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/resources/test/fuzzsample3.grammar"
+        ));
+        let sample4 = include_str!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/resources/test/fuzzsample4.grammar"
+        ));
+        let sample5 = include_str!(concat!(
+            env!("CARGO_MANIFEST_DIR"),
+            "/resources/test/fuzzsample5.grammar"
+        ));
+        const ERROR: &str = "call limit reached";
+        pest::set_call_limit(Some(5_000usize.try_into().unwrap()));
+        let s1 = crate::parser::parse(crate::parser::Rule::grammar_rules, sample1);
+        assert!(s1.is_err());
+        assert_eq!(s1.unwrap_err().variant.message(), ERROR);
+        let s2 = crate::parser::parse(crate::parser::Rule::grammar_rules, sample2);
+        assert!(s2.is_err());
+        assert_eq!(s2.unwrap_err().variant.message(), ERROR);
+        let s3 = crate::parser::parse(crate::parser::Rule::grammar_rules, sample3);
+        assert!(s3.is_err());
+        assert_eq!(s3.unwrap_err().variant.message(), ERROR);
+        let s4 = crate::parser::parse(crate::parser::Rule::grammar_rules, sample4);
+        assert!(s4.is_err());
+        assert_eq!(s4.unwrap_err().variant.message(), ERROR);
+        let s5 = crate::parser::parse(crate::parser::Rule::grammar_rules, sample5);
+        assert!(s5.is_err());
+        assert_eq!(s5.unwrap_err().variant.message(), ERROR);
+    }
 }
diff --git a/vendor/pest_meta/src/validator.rs b/vendor/pest_meta/src/validator.rs
index a358dbeec..5448c3bcd 100644
--- a/vendor/pest_meta/src/validator.rs
+++ b/vendor/pest_meta/src/validator.rs
@@ -7,105 +7,67 @@
 // option. All files in the project carrying such notice may not be copied,
 // modified, or distributed except according to those terms.
 
+use once_cell::sync::Lazy;
 use std::collections::{HashMap, HashSet};
 
 use pest::error::{Error, ErrorVariant, InputLocation};
 use pest::iterators::Pairs;
 use pest::Span;
 
-use parser::{ParserExpr, ParserNode, ParserRule, Rule};
-use UNICODE_PROPERTY_NAMES;
-
-#[allow(clippy::needless_pass_by_value)]
-pub fn validate_pairs<'i>(pairs: Pairs<'i, Rule>) -> Result<Vec<&'i str>, Vec<Error<Rule>>> {
-    let mut rust_keywords = HashSet::new();
-    rust_keywords.insert("abstract");
-    rust_keywords.insert("alignof");
-    rust_keywords.insert("as");
-    rust_keywords.insert("become");
-    rust_keywords.insert("box");
-    rust_keywords.insert("break");
-    rust_keywords.insert("const");
-    rust_keywords.insert("continue");
-    rust_keywords.insert("crate");
-    rust_keywords.insert("do");
-    rust_keywords.insert("else");
-    rust_keywords.insert("enum");
-    rust_keywords.insert("extern");
-    rust_keywords.insert("false");
-    rust_keywords.insert("final");
-    rust_keywords.insert("fn");
-    rust_keywords.insert("for");
-    rust_keywords.insert("if");
-    rust_keywords.insert("impl");
-    rust_keywords.insert("in");
-    rust_keywords.insert("let");
-    rust_keywords.insert("loop");
-    rust_keywords.insert("macro");
-    rust_keywords.insert("match");
-    rust_keywords.insert("mod");
-    rust_keywords.insert("move");
-    rust_keywords.insert("mut");
-    rust_keywords.insert("offsetof");
-    rust_keywords.insert("override");
-    rust_keywords.insert("priv");
-    rust_keywords.insert("proc");
-    rust_keywords.insert("pure");
-    rust_keywords.insert("pub");
-    rust_keywords.insert("ref");
-    rust_keywords.insert("return");
-    rust_keywords.insert("Self");
-    rust_keywords.insert("self");
-    rust_keywords.insert("sizeof");
-    rust_keywords.insert("static");
-    rust_keywords.insert("struct");
-    rust_keywords.insert("super");
-    rust_keywords.insert("trait");
-    rust_keywords.insert("true");
-    rust_keywords.insert("type");
-    rust_keywords.insert("typeof");
-    rust_keywords.insert("unsafe");
-    rust_keywords.insert("unsized");
-    rust_keywords.insert("use");
-    rust_keywords.insert("virtual");
-    rust_keywords.insert("where");
-    rust_keywords.insert("while");
-    rust_keywords.insert("yield");
-
-    let mut pest_keywords = HashSet::new();
-    pest_keywords.insert("_");
-    pest_keywords.insert("ANY");
-    pest_keywords.insert("DROP");
-    pest_keywords.insert("EOI");
-    pest_keywords.insert("PEEK");
-    pest_keywords.insert("PEEK_ALL");
-    pest_keywords.insert("POP");
-    pest_keywords.insert("POP_ALL");
-    pest_keywords.insert("PUSH");
-    pest_keywords.insert("SOI");
-
-    let mut builtins = HashSet::new();
-    builtins.insert("ANY");
-    builtins.insert("DROP");
-    builtins.insert("EOI");
-    builtins.insert("PEEK");
-    builtins.insert("PEEK_ALL");
-    builtins.insert("POP");
-    builtins.insert("POP_ALL");
-    builtins.insert("SOI");
-    builtins.insert("ASCII_DIGIT");
-    builtins.insert("ASCII_NONZERO_DIGIT");
-    builtins.insert("ASCII_BIN_DIGIT");
-    builtins.insert("ASCII_OCT_DIGIT");
-    builtins.insert("ASCII_HEX_DIGIT");
-    builtins.insert("ASCII_ALPHA_LOWER");
-    builtins.insert("ASCII_ALPHA_UPPER");
-    builtins.insert("ASCII_ALPHA");
-    builtins.insert("ASCII_ALPHANUMERIC");
-    builtins.insert("ASCII");
-    builtins.insert("NEWLINE");
-    builtins.extend(UNICODE_PROPERTY_NAMES);
-
+use crate::parser::{ParserExpr, ParserNode, ParserRule, Rule};
+use crate::UNICODE_PROPERTY_NAMES;
+
+static RUST_KEYWORDS: Lazy<HashSet<&'static str>> = Lazy::new(|| {
+    [
+        "abstract", "alignof", "as", "become", "box", "break", "const", "continue", "crate", "do",
+        "else", "enum", "extern", "false", "final", "fn", "for", "if", "impl", "in", "let", "loop",
+        "macro", "match", "mod", "move", "mut", "offsetof", "override", "priv", "proc", "pure",
+        "pub", "ref", "return", "Self", "self", "sizeof", "static", "struct", "super", "trait",
+        "true", "type", "typeof", "unsafe", "unsized", "use", "virtual", "where", "while", "yield",
+    ]
+    .iter()
+    .cloned()
+    .collect()
+});
+
+static PEST_KEYWORDS: Lazy<HashSet<&'static str>> = Lazy::new(|| {
+    [
+        "_", "ANY", "DROP", "EOI", "PEEK", "PEEK_ALL", "POP", "POP_ALL", "PUSH", "SOI",
+    ]
+    .iter()
+    .cloned()
+    .collect()
+});
+
+static BUILTINS: Lazy<HashSet<&'static str>> = Lazy::new(|| {
+    [
+        "ANY",
+        "DROP",
+        "EOI",
+        "PEEK",
+        "PEEK_ALL",
+        "POP",
+        "POP_ALL",
+        "SOI",
+        "ASCII_DIGIT",
+        "ASCII_NONZERO_DIGIT",
+        "ASCII_BIN_DIGIT",
+        "ASCII_OCT_DIGIT",
+        "ASCII_HEX_DIGIT",
+        "ASCII_ALPHA_LOWER",
+        "ASCII_ALPHA_UPPER",
+        "ASCII_ALPHA",
+        "ASCII_ALPHANUMERIC",
+        "ASCII",
+        "NEWLINE",
+    ]
+    .iter()
+    .cloned()
+    .chain(UNICODE_PROPERTY_NAMES.iter().cloned())
+    .collect::<HashSet<&str>>()
+});
+
+pub fn validate_pairs(pairs: Pairs<Rule>) -> Result<Vec<&str>, Vec<Error<Rule>>> {
     let definitions: Vec<_> = pairs
         .clone()
         .filter(|pair| pair.as_rule() == Rule::grammar_rule)
@@ -125,10 +87,10 @@ pub fn validate_pairs<'i>(pairs: Pairs<'i, Rule>) -> Result<Vec<&'i str>, Vec<Er
 
     let mut errors = vec![];
 
-    errors.extend(validate_rust_keywords(&definitions, &rust_keywords));
-    errors.extend(validate_pest_keywords(&definitions, &pest_keywords));
+    errors.extend(validate_rust_keywords(&definitions));
+    errors.extend(validate_pest_keywords(&definitions));
     errors.extend(validate_already_defined(&definitions));
-    errors.extend(validate_undefined(&definitions, &called_rules, &builtins));
+    errors.extend(validate_undefined(&definitions, &called_rules));
 
     if !errors.is_empty() {
         return Err(errors);
@@ -142,22 +104,19 @@ pub fn validate_pairs<'i>(pairs: Pairs<'i, Rule>) -> Result<Vec<&'i str>, Vec<Er
     Ok(defaults.cloned().collect())
 }
 
-#[allow(clippy::implicit_hasher, clippy::ptr_arg)]
-pub fn validate_rust_keywords<'i>(
-    definitions: &Vec<Span<'i>>,
-    rust_keywords: &HashSet<&str>,
-) -> Vec<Error<Rule>> {
+#[allow(clippy::ptr_arg)]
+pub fn validate_rust_keywords(definitions: &Vec<Span>) -> Vec<Error<Rule>> {
     let mut errors = vec![];
 
     for definition in definitions {
         let name = definition.as_str();
 
-        if rust_keywords.contains(name) {
+        if RUST_KEYWORDS.contains(name) {
             errors.push(Error::new_from_span(
                 ErrorVariant::CustomError {
                     message: format!("{} is a rust keyword", name),
                 },
-                definition.clone(),
+                *definition,
             ))
         }
     }
@@ -165,22 +124,19 @@ pub fn validate_rust_keywords<'i>(
     errors
 }
 
-#[allow(clippy::implicit_hasher, clippy::ptr_arg)]
-pub fn validate_pest_keywords<'i>(
-    definitions: &Vec<Span<'i>>,
-    pest_keywords: &HashSet<&str>,
-) -> Vec<Error<Rule>> {
+#[allow(clippy::ptr_arg)]
+pub fn validate_pest_keywords(definitions: &Vec<Span>) -> Vec<Error<Rule>> {
     let mut errors = vec![];
 
     for definition in definitions {
         let name = definition.as_str();
 
-        if pest_keywords.contains(name) {
+        if PEST_KEYWORDS.contains(name) {
             errors.push(Error::new_from_span(
                 ErrorVariant::CustomError {
                     message: format!("{} is a pest keyword", name),
                 },
-                definition.clone(),
+                *definition,
             ))
         }
     }
@@ -189,7 +145,7 @@ pub fn validate_pest_keywords<'i>(
 }
 
 #[allow(clippy::ptr_arg)]
-pub fn validate_already_defined<'i>(definitions: &Vec<Span<'i>>) -> Vec<Error<Rule>> {
+pub fn validate_already_defined(definitions: &Vec<Span>) -> Vec<Error<Rule>> {
     let mut errors = vec![];
     let mut defined = HashSet::new();
 
@@ -201,7 +157,7 @@ pub fn validate_already_defined<'i>(definitions: &Vec<Span<'i>>) -> Vec<Error<Ru
                 ErrorVariant::CustomError {
                     message: format!("rule {} already defined", name),
                 },
-                definition.clone(),
+                *definition,
             ))
         } else {
             defined.insert(name);
@@ -211,11 +167,10 @@ pub fn validate_already_defined<'i>(definitions: &Vec<Span<'i>>) -> Vec<Error<Ru
     errors
 }
 
-#[allow(clippy::implicit_hasher, clippy::ptr_arg)]
+#[allow(clippy::ptr_arg)]
 pub fn validate_undefined<'i>(
     definitions: &Vec<Span<'i>>,
     called_rules: &Vec<Span<'i>>,
-    builtins: &HashSet<&str>,
 ) -> Vec<Error<Rule>> {
     let mut errors = vec![];
     let definitions: HashSet<_> = definitions.iter().map(|span| span.as_str()).collect();
@@ -223,12 +178,12 @@ pub fn validate_undefined<'i>(
     for rule in called_rules {
         let name = rule.as_str();
 
-        if !definitions.contains(name) && !builtins.contains(name) {
+        if !definitions.contains(name) && !BUILTINS.contains(name) {
             errors.push(Error::new_from_span(
                 ErrorVariant::CustomError {
                     message: format!("rule {} is undefined", name),
                 },
-                rule.clone(),
+                *rule,
             ))
         }
     }
@@ -259,7 +214,7 @@ fn is_non_progressing<'i>(
     trace: &mut Vec<String>,
 ) -> bool {
     match *expr {
-        ParserExpr::Str(ref string) => string == "",
+        ParserExpr::Str(ref string) => string.is_empty(),
         ParserExpr::Ident(ref ident) => {
             if ident == "soi" || ident == "eoi" {
                 return true;
@@ -297,7 +252,7 @@ fn is_non_failing<'i>(
     trace: &mut Vec<String>,
 ) -> bool {
     match *expr {
-        ParserExpr::Str(ref string) => string == "",
+        ParserExpr::Str(ref string) => string.is_empty(),
         ParserExpr::Ident(ref ident) => {
             if !trace.contains(ident) {
                 if let Some(node) = rules.get(ident) {
@@ -342,7 +297,7 @@ fn validate_repetition<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> Vec<Error<Rul
                                      infinitely"
                                         .to_owned()
                             },
-                            node.span.clone()
+                            node.span
                         ))
                     } else if is_non_progressing(&other.expr, &map, &mut vec![]) {
                         Some(Error::new_from_span(
@@ -352,7 +307,7 @@ fn validate_repetition<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> Vec<Error<Rul
                                      infinitely"
                                         .to_owned(),
                             },
-                            node.span.clone()
+                            node.span
                         ))
                     } else {
                         None
@@ -389,7 +344,7 @@ fn validate_choices<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> Vec<Error<Rule>>
                                     "expression cannot fail; following choices cannot be reached"
                                         .to_owned(),
                             },
-                            node.span.clone(),
+                            node.span,
                         ))
                     } else {
                         None
@@ -419,7 +374,7 @@ fn validate_whitespace_comment<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> Vec<E
                                 &rule.name
                             ),
                         },
-                        rule.node.span.clone(),
+                        rule.node.span,
                     ))
                 } else if is_non_progressing(&rule.node.expr, &map, &mut vec![]) {
                     Some(Error::new_from_span(
@@ -429,7 +384,7 @@ fn validate_whitespace_comment<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> Vec<E
                                 &rule.name
                             ),
                         },
-                        rule.node.span.clone(),
+                        rule.node.span,
                     ))
                 } else {
                     None
@@ -449,7 +404,6 @@ fn to_hash_map<'a, 'i: 'a>(rules: &'a [ParserRule<'i>]) -> HashMap<String, &'a P
     rules.iter().map(|r| (r.name.clone(), &r.node)).collect()
 }
 
-#[allow(clippy::needless_pass_by_value)]
 fn left_recursion<'a, 'i: 'a>(rules: HashMap<String, &'a ParserNode<'i>>) -> Vec<Error<Rule>> {
     fn check_expr<'a, 'i: 'a>(
         node: &'a ParserNode<'i>,
@@ -475,7 +429,7 @@ fn left_recursion<'a, 'i: 'a>(rules: HashMap<String, &'a ParserNode<'i>>) -> Vec
                                 chain
                             )
                         },
-                        node.span.clone()
+                        node.span
                     ));
                 }
 
@@ -499,22 +453,22 @@ fn left_recursion<'a, 'i: 'a>(rules: HashMap<String, &'a ParserNode<'i>>) -> Vec
                 }
             }
             ParserExpr::Choice(ref lhs, ref rhs) => {
-                check_expr(&lhs, rules, trace).or_else(|| check_expr(&rhs, rules, trace))
+                check_expr(lhs, rules, trace).or_else(|| check_expr(rhs, rules, trace))
             }
-            ParserExpr::Rep(ref node) => check_expr(&node, rules, trace),
-            ParserExpr::RepOnce(ref node) => check_expr(&node, rules, trace),
-            ParserExpr::Opt(ref node) => check_expr(&node, rules, trace),
-            ParserExpr::PosPred(ref node) => check_expr(&node, rules, trace),
-            ParserExpr::NegPred(ref node) => check_expr(&node, rules, trace),
-            ParserExpr::Push(ref node) => check_expr(&node, rules, trace),
+            ParserExpr::Rep(ref node) => check_expr(node, rules, trace),
+            ParserExpr::RepOnce(ref node) => check_expr(node, rules, trace),
+            ParserExpr::Opt(ref node) => check_expr(node, rules, trace),
+            ParserExpr::PosPred(ref node) => check_expr(node, rules, trace),
+            ParserExpr::NegPred(ref node) => check_expr(node, rules, trace),
+            ParserExpr::Push(ref node) => check_expr(node, rules, trace),
             _ => None,
         }
     }
 
     let mut errors = vec![];
 
-    for (ref name, ref node) in &rules {
-        let name = (*name).clone();
+    for (name, node) in &rules {
+        let name = name.clone();
 
         if let Some(error) = check_expr(node, &rules, &mut vec![name]) {
             errors.push(error);