improve the "ASCReader" read performance. #661

Job	Run time
docs	56s
static-code-analysis	17s
build	24s
format	17s
test (ubuntu-latest, false, 3.8)	2m 44s
test (ubuntu-latest, false, 3.9)	3m 37s
test (ubuntu-latest, false, 3.10)	2m 45s
test (ubuntu-latest, false, 3.11)	2m 33s
test (ubuntu-latest, false, 3.12)	2m 38s
test (ubuntu-latest, false, pypy-3.8)	1m 32s
test (ubuntu-latest, false, pypy-3.9)	3m 15s
test (macos-latest, false, 3.8)	2m 59s
test (macos-latest, false, 3.9)	1m 34s
test (macos-latest, false, 3.10)	1m 42s
test (macos-latest, false, 3.11)	2m 6s
test (macos-latest, false, 3.12)	1m 40s
test (macos-latest, false, pypy-3.8)	3m 25s
test (macos-latest, false, pypy-3.9)	3m 34s
test (windows-latest, false, 3.8)	2m 13s
test (windows-latest, false, 3.9)	1m 36s
test (windows-latest, false, 3.10)	2m 3s
test (windows-latest, false, 3.11)	1m 46s
test (windows-latest, false, 3.12)	2m 23s
test (windows-latest, false, pypy-3.8)	5m 44s
test (windows-latest, false, pypy-3.9)	5m 56s
upload_pypi	0s
coveralls	0s
	59m 39s

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