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AK: Replace the mutable String::replace API with an immutable version

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This removes the awkward String::replace API which was the only String
API which mutated the String and replaces it with a new immutable
version that returns a new String with the replacements applied. This
also fixes a couple of UAFs that were caused by the use of this API.

As an optimization an equivalent StringView::replace API was also added
to remove an unnecessary String allocations in the format of:
`String { view }.replace(...);`
This commit is contained in:
Idan Horowitz 2021-09-11 02:15:44 +03:00
parent aba4c9579f
commit 6704961c82
26 changed files with 72 additions and 118 deletions
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5
Userland/Libraries/LibJS/Token.cpp
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@ -207,10 +207,7 @@ String Token::string_value(StringValueStatus& status) const
// 12.8.6.2 Static Semantics: TRV, https://tc39.es/ecma262/multipage/ecmascript-language-lexical-grammar.html#sec-static-semantics-trv
String Token::raw_template_value() const
{
String base = value().to_string();
base.replace("\r\n", "\n", true);
base.replace("\r", "\n", true);
return base;
return value().replace("\r\n", "\n", true).replace("\r", "\n", true);
}
bool Token::bool_value() const