redid the parser, patched up the project too.

Cargo.lock

@@ -22,6 +22,12 @@ dependencies = [
  "version_check",
 ]
 
+[[package]]
+name = "autocfg"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -76,6 +82,12 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "either"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e78d4f1cc4ae33bbfc157ed5d5a5ef3bc29227303d595861deb238fcec4e9457"
+
 [[package]]
 name = "getrandom"
 version = "0.2.6"
@@ -96,6 +108,15 @@ dependencies = [
  "ahash 0.7.6",
 ]
 
+[[package]]
+name = "itertools"
+version = "0.10.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9a9d19fa1e79b6215ff29b9d6880b706147f16e9b1dbb1e4e5947b5b02bc5e3"
+dependencies = [
+ "either",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -108,6 +129,21 @@ version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
 
+[[package]]
+name = "mappable-rc"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b65e7f462b4fbfe1a3c857747c9d027dd55faffaeffbca68f70d0becfe7e93c5"
+
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.12.0"
@@ -121,9 +157,21 @@ dependencies = [
  "chumsky",
  "derivative",
  "hashbrown",
+ "itertools",
+ "mappable-rc",
+ "ordered-float",
  "thiserror",
 ]
 
+[[package]]
+name = "ordered-float"
+version = "3.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "96bcbab4bfea7a59c2c0fe47211a1ac4e3e96bea6eb446d704f310bc5c732ae2"
+dependencies = [
+ "num-traits",
+]
+
 [[package]]
 name = "proc-macro-hack"
 version = "0.5.19"