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Use string scanner with baseparser (#105)
Using StringScanner reduces the string copying process and speeds up the process. And I removed unnecessary methods. https://github.com/ruby/rexml/actions/runs/7549990000/job/20554906140?pr=105 ``` ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux] Calculating ------------------------------------- rexml 3.2.6 master 3.2.6(YJIT) master(YJIT) dom 4.868 5.077 8.137 8.303 i/s - 100.000 times in 20.540529s 19.696590s 12.288900s 12.043666s sax 13.597 13.953 19.206 20.948 i/s - 100.000 times in 7.354343s 7.167142s 5.206745s 4.773765s pull 15.641 16.918 22.266 25.378 i/s - 100.000 times in 6.393424s 5.910955s 4.491201s 3.940471s stream 14.339 15.844 19.810 22.206 i/s - 100.000 times in 6.973856s 6.311350s 5.047957s 4.503244s Comparison: dom master(YJIT): 8.3 i/s 3.2.6(YJIT): 8.1 i/s - 1.02x slower master: 5.1 i/s - 1.64x slower rexml 3.2.6: 4.9 i/s - 1.71x slower sax master(YJIT): 20.9 i/s 3.2.6(YJIT): 19.2 i/s - 1.09x slower master: 14.0 i/s - 1.50x slower rexml 3.2.6: 13.6 i/s - 1.54x slower pull master(YJIT): 25.4 i/s 3.2.6(YJIT): 22.3 i/s - 1.14x slower master: 16.9 i/s - 1.50x slower rexml 3.2.6: 15.6 i/s - 1.62x slower stream master(YJIT): 22.2 i/s 3.2.6(YJIT): 19.8 i/s - 1.12x slower master: 15.8 i/s - 1.40x slower rexml 3.2.6: 14.3 i/s - 1.55x slower ``` - YJIT=ON : 1.02x - 1.14x faster - YJIT=OFF : 1.02x - 1.10x faster --------- Co-authored-by: Sutou Kouhei <kou@cozmixng.org>
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,36 @@ | ||
# frozen_string_literal: false | ||
require 'test/unit' | ||
require 'rexml/document' | ||
|
||
module REXMLTests | ||
class TestParseEntityDeclaration < Test::Unit::TestCase | ||
private | ||
def xml(internal_subset) | ||
<<-XML | ||
<!DOCTYPE r SYSTEM "urn:x-henrikmartensson:test" [ | ||
#{internal_subset} | ||
]> | ||
<r/> | ||
XML | ||
end | ||
|
||
def parse(internal_subset) | ||
REXML::Document.new(xml(internal_subset)).doctype | ||
end | ||
|
||
def test_empty | ||
exception = assert_raise(REXML::ParseException) do | ||
parse(<<-INTERNAL_SUBSET) | ||
<!ENTITY> | ||
INTERNAL_SUBSET | ||
end | ||
assert_equal(<<-DETAIL.chomp, exception.to_s) | ||
Malformed notation declaration: name is missing | ||
Line: 5 | ||
Position: 72 | ||
Last 80 unconsumed characters: | ||
<!ENTITY> ]> <r/> | ||
DETAIL | ||
end | ||
end | ||
end |
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