improve the "ASCReader" read performance. #672

Job	Run time
static-code-analysis	34s
docs	53s
build	22s
test (ubuntu-latest, false, 3.8)	2m 36s
format	14s
test (ubuntu-latest, false, 3.9)	2m 24s
test (ubuntu-latest, false, 3.10)	2m 33s
test (ubuntu-latest, false, 3.11)	2m 28s
test (ubuntu-latest, false, 3.12)	2m 35s
test (ubuntu-latest, false, pypy-3.8)	3m 4s
test (ubuntu-latest, false, pypy-3.9)	3m 5s
test (macos-latest, false, 3.8)	4m 44s
test (macos-latest, false, 3.9)	2m 14s
test (macos-latest, false, 3.10)	1m 38s
test (macos-latest, false, 3.11)	1m 38s
test (macos-latest, false, 3.12)	1m 38s
test (macos-latest, false, pypy-3.8)	3m 17s
test (macos-latest, false, pypy-3.9)	5m 21s
test (windows-latest, false, 3.8)	1m 50s
test (windows-latest, false, 3.9)	1m 41s
test (windows-latest, false, 3.10)	1m 38s
test (windows-latest, false, 3.11)	1m 47s
test (windows-latest, false, 3.12)	2m 31s
test (windows-latest, false, pypy-3.8)	5m 33s
test (windows-latest, false, pypy-3.9)	5m 48s
upload_pypi	0s
coveralls	8s
	1h 2m 14s

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