[Feat]: Refactor Diagnostics

[aacebo]

#10

diagnostics are a nightly proc macro feature and so we use proc-macro2-diagnostics to bridge the gap the same way we do with proc-macro2 vs proc-macro. This dependency is for some people unneeded and unwanted, and so here I feature gate it and when the feature is not enabled, we use a workaround so we can still use the same code paths without the dependency, via printing the diagnostics to the console.

[github-actions]

Bencher Report

Branch	aacebo/feature-flag-diagnostics
Testbed	ubuntu-latest

🚨 1 Alert

Benchmark	Measure Units	View	Benchmark Result (Result Δ%)	Upper Boundary (Limit %)
enum_extract_vanilla	Latency nanoseconds (ns)	📈 plot 🚷 threshold 🚨 alert (🔔)	284.10 ns (+18.37%) Baseline: 240.01 ns	272.43 ns (104.29%)

Click to view all benchmark results

Benchmark	Latency	Benchmark Result nanoseconds (ns) (Result Δ%)	Upper Boundary nanoseconds (ns) (Limit %)
attr_darling	📈 view plot 🚷 view threshold	3,497.58 ns (+0.47%) Baseline: 3,481.15 ns	3,711.23 ns (94.24%)
attr_parse	📈 view plot 🚷 view threshold	3,902.37 ns (+1.84%) Baseline: 3,831.93 ns	4,109.58 ns (94.96%)
attr_zyn	📈 view plot 🚷 view threshold	3,032.06 ns (-3.49%) Baseline: 3,141.72 ns	3,356.50 ns (90.33%)
camel_heck	📈 view plot 🚷 view threshold	381.76 ns (+1.48%) Baseline: 376.21 ns	407.32 ns (93.73%)
camel_zyn	📈 view plot 🚷 view threshold	46.65 ns (-33.92%) Baseline: 70.60 ns	172.89 ns (26.98%)
codegen_vanilla	📈 view plot 🚷 view threshold	7,730.47 ns (+1.52%) Baseline: 7,614.67 ns	7,998.41 ns (96.65%)
codegen_zyn	📈 view plot 🚷 view threshold	5,870.69 ns (-14.81%) Baseline: 6,891.41 ns	7,860.87 ns (74.68%)
enum_codegen_vanilla	📈 view plot 🚷 view threshold	9,271.74 ns (+2.36%) Baseline: 9,057.94 ns	9,608.68 ns (96.49%)
enum_codegen_zyn	📈 view plot 🚷 view threshold	9,342.42 ns (+1.68%) Baseline: 9,188.36 ns	9,669.56 ns (96.62%)
enum_extract_vanilla	📈 view plot 🚷 view threshold 🚨 view alert (🔔)	284.10 ns (+18.37%) Baseline: 240.01 ns	272.43 ns (104.29%)
enum_extract_zyn	📈 view plot 🚷 view threshold	266.17 ns (+0.08%) Baseline: 265.95 ns	302.47 ns (88.00%)
enum_full_vanilla	📈 view plot 🚷 view threshold	12,053.17 ns (+3.81%) Baseline: 11,610.27 ns	12,385.25 ns (97.32%)
enum_full_zyn	📈 view plot 🚷 view threshold	12,303.15 ns (+0.54%) Baseline: 12,236.48 ns	12,989.82 ns (94.71%)
enum_parse_vanilla	📈 view plot 🚷 view threshold	2,040.50 ns (-3.59%) Baseline: 2,116.51 ns	2,341.10 ns (87.16%)
enum_parse_zyn	📈 view plot 🚷 view threshold	2,137.37 ns (-4.04%) Baseline: 2,227.40 ns	2,472.30 ns (86.45%)
extract_vanilla	📈 view plot 🚷 view threshold	623.02 ns (+2.39%) Baseline: 608.49 ns	653.70 ns (95.31%)
extract_zyn	📈 view plot 🚷 view threshold	635.50 ns (+4.11%) Baseline: 610.40 ns	655.85 ns (96.90%)
full_vanilla	📈 view plot 🚷 view threshold	14,609.90 ns (+1.63%) Baseline: 14,375.77 ns	15,352.00 ns (95.17%)
full_zyn	📈 view plot 🚷 view threshold	15,013.15 ns (-0.22%) Baseline: 15,045.78 ns	16,733.35 ns (89.72%)
kebab_heck	📈 view plot 🚷 view threshold	382.91 ns (+2.16%) Baseline: 374.81 ns	401.96 ns (95.26%)
kebab_zyn	📈 view plot 🚷 view threshold	45.05 ns (+2.76%) Baseline: 43.84 ns	48.54 ns (92.82%)
parse_vanilla	📈 view plot 🚷 view threshold	6,020.47 ns (-0.75%) Baseline: 6,065.77 ns	6,620.97 ns (90.93%)
parse_zyn	📈 view plot 🚷 view threshold	6,243.79 ns (+1.13%) Baseline: 6,174.17 ns	6,718.94 ns (92.93%)
pascal_heck	📈 view plot 🚷 view threshold	379.91 ns (+2.01%) Baseline: 372.42 ns	401.39 ns (94.65%)
pascal_zyn	📈 view plot 🚷 view threshold	43.63 ns (-31.94%) Baseline: 64.10 ns	146.93 ns (29.69%)
screaming_heck	📈 view plot 🚷 view threshold	376.04 ns (+1.85%) Baseline: 369.20 ns	397.34 ns (94.64%)
screaming_zyn	📈 view plot 🚷 view threshold	45.07 ns (+1.43%) Baseline: 44.44 ns	48.71 ns (92.53%)
snake_heck	📈 view plot 🚷 view threshold	382.10 ns (+2.43%) Baseline: 373.02 ns	399.78 ns (95.58%)
snake_zyn	📈 view plot 🚷 view threshold	45.05 ns (-16.78%) Baseline: 54.14 ns	100.30 ns (44.91%)

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