1 files changed, 54 insertions, 0 deletions
diff --git a/benchmark/string_gsub.yml b/benchmark/string_gsub.yml
new file mode 100644
index 0000000000..c26e1a6498
--- /dev/null
+++ b/benchmark/string_gsub.yml
@@ -0,0 +1,54 @@
+prelude: |
+  # frozen_string_literal: true
+  STR = ((("a" * 31) + "<") * 1000).freeze
+  STR_UNICODE = ((("a" * 30) + "\u2028") * 1000).freeze
+  ESCAPED_CHARS_BINARY = {
+    "\u2028".b => '\u2028'.b,
+    "\u2029".b => '\u2029'.b,
+    ">".b => '\u003e'.b.freeze,
+    "<".b => '\u003c'.b.freeze,
+    "&".b => '\u0026'.b.freeze,
+  }
+  BINARY_PATTERN = Regexp.union(ESCAPED_CHARS_BINARY.keys)
+
+  ESCAPED_CHARS = {
+    "\u2028" => '\u2028',
+    "\u2029" => '\u2029',
+    ">" => '\u003e',
+    "<" => '\u003c',
+    "&" => '\u0026',
+  }
+  ESCAPE_PATTERN = Regexp.union(ESCAPED_CHARS.keys)
+
+  NO_MATCH_SHARED_STRING = ("a" * 100_000).freeze
+
+benchmark:
+  gsub_no_match_shared: |
+    str = NO_MATCH_SHARED_STRING.dup
+    str.gsub!("z", "x")
+    str
+
+  sub_no_match_shared: |
+    str = NO_MATCH_SHARED_STRING.dup
+    str.sub!("z", "x")
+    str
+
+  escape: |
+    str = STR.dup
+    str.gsub!(ESCAPE_PATTERN, ESCAPED_CHARS)
+    str
+
+  escape_bin: |
+    str = STR.b
+    str.gsub!(BINARY_PATTERN, ESCAPED_CHARS_BINARY)
+    str.force_encoding(Encoding::UTF_8)
+
+  escape_utf8: |
+    str = STR_UNICODE.dup
+    str.gsub!(ESCAPE_PATTERN, ESCAPED_CHARS)
+    str
+
+  escape_utf8_bin: |
+    str = STR_UNICODE.b
+    str.gsub!(BINARY_PATTERN, ESCAPED_CHARS_BINARY)
+    str.force_encoding(Encoding::UTF_8)