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AK+Everywhere: Make UTF-16 to UTF-8 converter fallible

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This could fail to allocate the underlying storage needed to store the
UTF-8 data. Propagate this error.
This commit is contained in:
Timothy Flynn 2023-01-07 13:59:10 -05:00 • committed by Linus Groh
parent 1edb96376b
commit d793262beb
10 changed files with 25 additions and 22 deletions
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6
Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
View file

@ -1265,7 +1265,7 @@ ThrowCompletionOr<DeprecatedString> get_substitution(VM& vm, Utf16View const& ma
} else if (is_ascii_digit(next)) {
bool is_two_digits = (i + 2 < replace_view.length_in_code_units()) && is_ascii_digit(replace_view.code_unit_at(i + 2));
auto capture_position_string = replace_view.substring_view(i + 1, is_two_digits ? 2 : 1).to_utf8();
auto capture_position_string = TRY_OR_THROW_OOM(vm, replace_view.substring_view(i + 1, is_two_digits ? 2 : 1).to_utf8());
auto capture_position = capture_position_string.to_uint();
if (capture_position.has_value() && (*capture_position > 0) && (*capture_position <= captures.size())) {
@ -1295,7 +1295,7 @@ ThrowCompletionOr<DeprecatedString> get_substitution(VM& vm, Utf16View const& ma
result.append(curr);
} else {
auto group_name_view = replace_view.substring_view(start_position, *end_position - start_position);
auto group_name = group_name_view.to_utf8(Utf16View::AllowInvalidCodeUnits::Yes);
auto group_name = TRY_OR_THROW_OOM(vm, group_name_view.to_utf8(Utf16View::AllowInvalidCodeUnits::Yes));
auto capture = TRY(named_captures.as_object().get(group_name));
@ -1311,7 +1311,7 @@ ThrowCompletionOr<DeprecatedString> get_substitution(VM& vm, Utf16View const& ma
}
}
return Utf16String(move(result)).to_utf8();
return TRY_OR_THROW_OOM(vm, Utf16View { result }.to_utf8());
}
}

2
Userland/Libraries/LibJS/Runtime/Intl/DateTimeFormat.cpp
View file

@ -718,7 +718,7 @@ ThrowCompletionOr<Vector<PatternPartition>> format_date_time_pattern(VM& vm, Dat
if (formatted_value.length() > 2) {
Utf16String utf16_formatted_value { formatted_value };
if (utf16_formatted_value.length_in_code_units() > 2)
formatted_value = utf16_formatted_value.substring_view(utf16_formatted_value.length_in_code_units() - 2).to_utf8();
formatted_value = TRY_OR_THROW_OOM(vm, utf16_formatted_value.substring_view(utf16_formatted_value.length_in_code_units() - 2).to_utf8());
}
break;

3
Userland/Libraries/LibJS/Runtime/PrimitiveString.cpp
View file

@ -68,7 +68,8 @@ DeprecatedString const& PrimitiveString::deprecated_string() const
{
resolve_rope_if_needed();
if (!m_has_utf8_string) {
m_utf8_string = m_utf16_string.to_utf8();
// FIXME: Propagate this error.
m_utf8_string = MUST(m_utf16_string.to_utf8(vm()));
m_has_utf8_string = true;
}
return m_utf8_string;

5
Userland/Libraries/LibJS/Runtime/Utf16String.cpp
View file

@ -6,6 +6,7 @@
#include <AK/StringView.h>
#include <LibJS/Runtime/Utf16String.h>
#include <LibJS/Runtime/VM.h>
namespace JS {
namespace Detail {
@ -96,9 +97,9 @@ Utf16View Utf16String::substring_view(size_t code_unit_offset) const
return view().substring_view(code_unit_offset);
}
DeprecatedString Utf16String::to_utf8() const
ThrowCompletionOr<DeprecatedString> Utf16String::to_utf8(VM& vm) const
{
return view().to_utf8(Utf16View::AllowInvalidCodeUnits::Yes);
return TRY_OR_THROW_OOM(vm, view().to_utf8(Utf16View::AllowInvalidCodeUnits::Yes));
}
u16 Utf16String::code_unit_at(size_t index) const

3
Userland/Libraries/LibJS/Runtime/Utf16String.h
View file

@ -12,6 +12,7 @@
#include <AK/Types.h>
#include <AK/Utf16View.h>
#include <AK/Vector.h>
#include <LibJS/Runtime/Completion.h>
namespace JS {
namespace Detail {
@ -49,7 +50,7 @@ public:
Utf16View substring_view(size_t code_unit_offset, size_t code_unit_length) const;
Utf16View substring_view(size_t code_unit_offset) const;
DeprecatedString to_utf8() const;
ThrowCompletionOr<DeprecatedString> to_utf8(VM&) const;
u16 code_unit_at(size_t index) const;
size_t length_in_code_units() const;