replace lexical-core with minimal-lexical

minimal-lexical is a smaller library (compile faster), has no
dependencies, and is faster than lexical-core 0.7 (0.8 will have the
same algorithm).

It requires a separate tokenization phase, done manually, but this will
give more flexibility in supporting different syntaxes

This commit removes the "lexical" feature, as there is no need now
tosupport a separate version without the crate

.github/workflows/ci.yml

@@ -25,7 +25,7 @@ jobs:
           - rust: stable
             features: ''
           - rust: stable
-            features: '--features "std lexical"'
+            features: '--features "std"'
           - rust: stable
             features: '--no-default-features'
           - rust: stable
@@ -127,7 +127,7 @@ jobs:
         uses: actions-rs/cargo@v1
         with:
           command: doc
-          args: --verbose --features "std lexical docsrs"
+          args: --verbose --features "std docsrs"
 
   fmt:
     name: Check formatting

Cargo.toml

@@ -30,18 +30,16 @@ include = [
 [features]
 alloc = []
 std = ["alloc", "memchr/use_std"]
-default = ["std", "lexical"]
-lexical = ["lexical-core"]
+default = ["std"]
 docsrs = []
 
+[dependencies]
+minimal-lexical = "0.1.2"
+
 [dependencies.memchr]
 version = "2.0"
 default-features = false
 
-[dependencies.lexical-core]
-version = "^0.7.5"
-optional = true
-
 [dev-dependencies]
 criterion = "0.3"
 jemallocator = "^0.3"

benches/json.rs

@@ -191,12 +191,35 @@ fn float_str(c: &mut Criterion) {
   });
 }
 
+use nom::ParseTo;
+use nom::Err;
+fn std_float(input: &[u8]) -> IResult<&[u8], f64, (&[u8], ErrorKind)> {
+    match recognize_float(input) {
+        Err(e) => Err(e),
+        Ok((i, s)) => match s.parse_to() {
+            Some(n) => Ok((i, n)),
+            None => Err(Err::Error((i, ErrorKind::Float))),
+        },
+    }
+}
+
+fn std_float_bytes(c: &mut Criterion) {
+  println!(
+    "std_float_bytes result: {:?}",
+    std_float(&b"-1.234E-12"[..])
+  );
+  c.bench_function("std_float bytes", |b| {
+    b.iter(|| std_float(&b"-1.234E-12"[..]));
+  });
+}
+
 criterion_group!(
   benches,
   json_bench,
   recognize_float_bytes,
   recognize_float_str,
   float_bytes,
+  std_float_bytes,
   float_str
 );
 criterion_main!(benches);

proptest-regressions/character/complete.txt

@@ -7,3 +7,4 @@
 cc cc9654fa1abddf4d6045e4c4977fea390903ee6e6469630b0bb17fdf69219b6d # shrinks to s = "𑵧"
 cc 7dcadb118055527708beb3c5eadd3e14202a8f70e019004c33e9696853691827 # shrinks to s = ""
 cc e8af68daccf860a49177b5aab0dfeecea24c7530fec6c88469ca0f820188c6b1 # shrinks to s = "-"
+cc c98c899dcd0a9359ddbf246e3a1edddb349e6dd7e1d166637e551e4dcf570db6 # shrinks to s = "+0"

proptest-regressions/character/streaming.txt

@@ -6,3 +6,5 @@
 # everyone who runs the test benefits from these saved cases.
 cc 82a575ed1f031825e7474bff3702d0c42017471b5ac845bdbdc00c1534dbc4cb # shrinks to s = ""
 cc 155f8f4b052941ba58b8b90a5f8fa7da78c04c1a451083a4a89a348c86226904 # shrinks to s = "0"
+cc c35a5a751223822dd0a94416d5ca3cc53b4a61cdc4f9422251bc2c72712ed844 # shrinks to s = "-0"
+cc 478373182b684c42ce3746ea62d57a35a9c764ef75943e0bb1dc08f88b295581 # shrinks to s = "- "

proptest-regressions/number/complete.txt

@@ -0,0 +1,13 @@
+# Seeds for failure cases proptest has generated in the past. It is
+# automatically read and these particular cases re-run before any
+# novel cases are generated.
+#
+# It is recommended to check this file in to source control so that
+# everyone who runs the test benefits from these saved cases.
+cc b4267e69b3f62d9bfbc8b9a11d9250a4cc78a2f329841190fd2740b1b3e236d6 # shrinks to s = ""
+cc cf51966684042789e64f4b99449551cb227309f9db61f0fdd4266b0b7b572ce4 # shrinks to s = "0"
+cc fc0d8df9f3a0ea46ec05ff021be24244fe2533c4b5d75e74a78191148e2d07bb # shrinks to s = "0"
+cc 15e795e3c045df60a2fa871336f9bf43ca9036aeda19e8e440b956866b031a65 # shrinks to s = "0e"
+cc 20b201c32f3f8314cf32133c3e6a58dd1e4409ae883f7910efa1147ba7c73b6c # shrinks to s = "e"
+cc 47f9c093d94bc952a3593a79adc2cafa75c9cca51bee8a77150cfaeb89acbaf7 # shrinks to s = "01"
+cc 9d65816e63ee5da410b64aeb5f7d44dbfa7d0773c053380e05bff0beb1bc8d92 # shrinks to s = ".0"