Try out dfa for numbers

src/test.cpp

@@ -12,6 +12,7 @@
 #include <simdjson.h>
 
 #include "callbacks.h"
+#include "parser3.h"
 #include "weaseljson.h"
 
 // This is the JSON grammar in McKeeman Form.
@@ -306,3 +307,21 @@ TEST_CASE("bench5") {
     bench.doNotOptimizeAway(doc);
   });
 }
+
+TEST_CASE("num dfa") {
+  parser3::NumDfa dfa;
+  std::string match = "-1231279127389127389127398127389712893791287389217327482"
+                      "374.0e69010101010101010101010101010101";
+  auto *buf = dfa.scan(match.data(), match.data() + match.size());
+  CHECK(buf == match.data() + match.size());
+  CHECK(dfa.accept());
+
+  ankerl::nanobench::Bench bench;
+  bench.batch(match.size());
+  bench.unit("byte");
+  bench.run("number dfa", [&]() {
+    dfa.reset();
+    bench.doNotOptimizeAway(
+        dfa.scan(match.data(), match.data() + match.size()));
+  });
+}