Defer basic-string escape validation in tokenizer

[dduan]

Stop validating escape sequences while scanning double-quoted strings.
Validation remains in unpacking, reducing work during parsing of large inputs.

[github-actions]

Comparing results between 'main' and 'pull_request'

Host 'runnervmh13bl' with 4 'x86_64' processors with 15 GB memory, running:
#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025

TOMLDecoderBenchmarks

Decode toml.io example metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	70	71	71	72	84	124	280	6902
pull_request	70	71	71	72	76	91	172	7011
Δ	0	0	0	0	-8	-33	-108	109
Improvement %	0	0	0	0	10	27	39	109

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	624	624	624	624	624	624	624	6902
pull_request	625	625	625	625	625	625	625	7011
Δ	1	1	1	1	1	1	1	109
Improvement %	0	0	0	0	0	0	0	109

Parse toml.io example metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ns) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	6432	6583	6623	6663	6735	11823	62606	10000
pull_request	6423	6563	6603	6655	6763	10575	120824	10000
Δ	-9	-20	-20	-8	28	-1248	58218	0
Improvement %	0	0	0	0	0	11	-93	0

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	8	9	9	9	9	9	9	10000
pull_request	8	9	9	9	9	9	9	10000
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

decode canada.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	270	270	271	271	272	272	272	4
pull_request	268	268	269	270	270	270	270	4
Δ	-2	-2	-2	-1	-2	-2	-2	0
Improvement %	1	1	1	0	1	1	1	0

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	1674	1674	1674	1674	1674	1674	1674	4
pull_request	1674	1674	1674	1674	1674	1674	1674	4
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

decode twitter.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	9199	9306	9331	9380	9437	9716	9916	106
pull_request	9269	9331	9372	9429	9503	12804	14765	105
Δ	70	25	41	49	66	3088	4849	-1
Improvement %	-1	0	0	-1	-1	-32	-49	-1

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	66	66	66	66	66	66	66	106
pull_request	66	66	66	66	66	66	66	105
Δ	0	0	0	0	0	0	0	-1
Improvement %	0	0	0	0	0	0	0	-1

parse GitHub events archive metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	180	180	181	182	182	182	182	6
pull_request	179	181	181	182	182	182	182	6
Δ	-1	1	0	0	0	0	0	0
Improvement %	1	-1	0	0	0	0	0	0

Retains: results within specified thresholds, fold down for details.

Retains (K) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	77	77	77	77	77	77	77	6
pull_request	77	77	77	77	77	77	77	6
Δ	0	0	0	0	0	0	0	0
Improvement %	0	0	0	0	0	0	0	0

parse canada.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (ms) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	18	18	19	19	19	20	20	53
pull_request	16	17	17	18	18	19	19	58
Δ	-2	-1	-2	-1	-1	-1	-1	5
Improvement %	11	6	11	5	5	5	5	5

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	132	133	133	133	133	133	133	53
pull_request	132	133	133	133	133	133	133	58
Δ	0	0	0	0	0	0	0	5
Improvement %	0	0	0	0	0	0	0	5

parse twitter.toml metrics

Time (wall clock): results within specified thresholds, fold down for details.

Time (wall clock) (μs) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	2930	2968	2980	2996	3023	3293	3993	329
pull_request	2944	2990	3002	3015	3031	3154	3511	327
Δ	14	22	22	19	8	-139	-482	-2
Improvement %	0	-1	-1	-1	0	4	12	-2

Retains: results within specified thresholds, fold down for details.

Retains *	p0	p25	p50	p75	p90	p99	p100	Samples
main	1292	1293	1293	1293	1293	1293	1293	329
pull_request	1292	1293	1293	1293	1293	1293	1293	327
Δ	0	0	0	0	0	0	0	-2
Improvement %	0	0	0	0	0	0	0	-2