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Everywhere: Use OOM-safe ByteBuffer APIs where possible

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If we can easily communicate failure, let's avoid asserting and report
failure instead.
This commit is contained in:
Ali Mohammad Pur
2021-09-06 03:28:46 +04:30
committed by Andreas Kling
parent 6606993432
commit 3a9f00c59b
22 changed files with 135 additions and 67 deletions
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18
AK/StringBuilder.cpp
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@@ -17,18 +17,18 @@
namespace AK {
inline void StringBuilder::will_append(size_t size)
inline bool StringBuilder::will_append(size_t size)
{
Checked<size_t> needed_capacity = m_buffer.size();
needed_capacity += size;
VERIFY(!needed_capacity.has_overflow());
// Prefer to completely use the existing capacity first
if (needed_capacity <= m_buffer.capacity())
return;
return true;
Checked<size_t> expanded_capacity = needed_capacity;
expanded_capacity *= 2;
VERIFY(!expanded_capacity.has_overflow());
m_buffer.ensure_capacity(expanded_capacity.value());
return m_buffer.try_ensure_capacity(expanded_capacity.value());
}
StringBuilder::StringBuilder(size_t initial_capacity)
@@ -40,8 +40,10 @@ void StringBuilder::append(StringView const& str)
{
if (str.is_empty())
return;
will_append(str.length());
m_buffer.append(str.characters_without_null_termination(), str.length());
auto ok = will_append(str.length());
VERIFY(ok);
ok = m_buffer.try_append(str.characters_without_null_termination(), str.length());
VERIFY(ok);
}
void StringBuilder::append(char const* characters, size_t length)
@@ -51,8 +53,10 @@ void StringBuilder::append(char const* characters, size_t length)
void StringBuilder::append(char ch)
{
will_append(1);
m_buffer.append(&ch, 1);
auto ok = will_append(1);
VERIFY(ok);
ok = m_buffer.try_append(&ch, 1);
VERIFY(ok);
}
void StringBuilder::appendvf(char const* fmt, va_list ap)