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AK: Remove the fallible constructor from FixedMemoryStream

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This commit is contained in:
Tim Schumacher 2023-01-30 11:05:43 +01:00 • committed by Linus Groh
parent 8b2f23d016
commit 220fbcaa7e
31 changed files with 185 additions and 209 deletions
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100
Tests/AK/TestLEB128.cpp
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@ -14,18 +14,18 @@ TEST_CASE(single_byte)
u32 output = {};
i32 output_signed = {};
u8 buf[] = { 0x00 };
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { buf, sizeof(buf) }));
FixedMemoryStream stream { ReadonlyBytes { buf, sizeof(buf) } };
// less than/eq 0b0011_1111, signed == unsigned == raw byte
for (u8 i = 0u; i <= 0x3F; ++i) {
buf[0] = i;
MUST(stream->seek(0));
output = MUST(stream->read_value<LEB128<u32>>());
MUST(stream.seek(0));
output = MUST(stream.read_value<LEB128<u32>>());
EXPECT_EQ(output, i);
MUST(stream->seek(0));
output_signed = MUST(stream->read_value<LEB128<i32>>());
MUST(stream.seek(0));
output_signed = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(output_signed, i);
}
@ -33,23 +33,23 @@ TEST_CASE(single_byte)
for (u8 i = 0x40u; i < 0x80; ++i) {
buf[0] = i;
MUST(stream->seek(0));
output = MUST(stream->read_value<LEB128<u32>>());
MUST(stream.seek(0));
output = MUST(stream.read_value<LEB128<u32>>());
EXPECT_EQ(output, i);
MUST(stream->seek(0));
output_signed = MUST(stream->read_value<LEB128<i32>>());
MUST(stream.seek(0));
output_signed = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(output_signed, (i | (-1 & (~0x3F))));
}
// MSB set, but input too short
for (u16 i = 0x80; i <= 0xFF; ++i) {
buf[0] = static_cast<u8>(i);
MUST(stream->seek(0));
EXPECT(stream->read_value<LEB128<u32>>().is_error());
MUST(stream.seek(0));
EXPECT(stream.read_value<LEB128<u32>>().is_error());
MUST(stream->seek(0));
EXPECT(stream->read_value<LEB128<i32>>().is_error());
MUST(stream.seek(0));
EXPECT(stream.read_value<LEB128<i32>>().is_error());
}
}
@ -58,7 +58,7 @@ TEST_CASE(two_bytes)
u32 output = {};
i32 output_signed = {};
u8 buf[] = { 0x00, 0x1 };
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { buf, sizeof(buf) }));
FixedMemoryStream stream { ReadonlyBytes { buf, sizeof(buf) } };
// Only test with first byte expecting more, otherwise equivalent to single byte case
for (u16 i = 0x80; i <= 0xFF; ++i) {
@ -68,12 +68,12 @@ TEST_CASE(two_bytes)
for (u8 j = 0u; j <= 0x3F; ++j) {
buf[1] = j;
MUST(stream->seek(0));
output = MUST(stream->read_value<LEB128<u32>>());
MUST(stream.seek(0));
output = MUST(stream.read_value<LEB128<u32>>());
EXPECT_EQ(output, (static_cast<u32>(j) << 7) + (i & 0x7F));
MUST(stream->seek(0));
output_signed = MUST(stream->read_value<LEB128<i32>>());
MUST(stream.seek(0));
output_signed = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(output_signed, (static_cast<i32>(j) << 7) + (i & 0x7F));
}
@ -81,12 +81,12 @@ TEST_CASE(two_bytes)
for (u8 j = 0x40u; j < 0x80; ++j) {
buf[1] = j;
MUST(stream->seek(0));
output = MUST(stream->read_value<LEB128<u32>>());
MUST(stream.seek(0));
output = MUST(stream.read_value<LEB128<u32>>());
EXPECT_EQ(output, (static_cast<u32>(j) << 7) + (i & 0x7F));
MUST(stream->seek(0));
output_signed = MUST(stream->read_value<LEB128<i32>>());
MUST(stream.seek(0));
output_signed = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(output_signed, ((static_cast<i32>(j) << 7) + (i & 0x7F)) | (-1 & (~0x3FFF)));
}
@ -94,11 +94,11 @@ TEST_CASE(two_bytes)
for (u16 j = 0x80; j <= 0xFF; ++j) {
buf[1] = static_cast<u8>(j);
MUST(stream->seek(0));
EXPECT(stream->read_value<LEB128<u32>>().is_error());
MUST(stream.seek(0));
EXPECT(stream.read_value<LEB128<u32>>().is_error());
MUST(stream->seek(0));
EXPECT(stream->read_value<LEB128<i32>>().is_error());
MUST(stream.seek(0));
EXPECT(stream.read_value<LEB128<i32>>().is_error());
}
}
}
@ -107,22 +107,22 @@ TEST_CASE(overflow_sizeof_output_unsigned)
{
u8 u32_max_plus_one[] = { 0x80, 0x80, 0x80, 0x80, 0x10 };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { u32_max_plus_one, sizeof(u32_max_plus_one) }));
EXPECT(stream->read_value<LEB128<u32>>().is_error());
FixedMemoryStream stream { ReadonlyBytes { u32_max_plus_one, sizeof(u32_max_plus_one) } };
EXPECT(stream.read_value<LEB128<u32>>().is_error());
MUST(stream->seek(0));
u64 out64 = MUST(stream->read_value<LEB128<u64>>());
MUST(stream.seek(0));
u64 out64 = MUST(stream.read_value<LEB128<u64>>());
EXPECT_EQ(out64, static_cast<u64>(NumericLimits<u32>::max()) + 1);
}
u8 u32_max[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x0F };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { u32_max, sizeof(u32_max) }));
u32 out = MUST(stream->read_value<LEB128<u32>>());
FixedMemoryStream stream { ReadonlyBytes { u32_max, sizeof(u32_max) } };
u32 out = MUST(stream.read_value<LEB128<u32>>());
EXPECT_EQ(out, NumericLimits<u32>::max());
MUST(stream->seek(0));
u64 out64 = MUST(stream->read_value<LEB128<u64>>());
MUST(stream.seek(0));
u64 out64 = MUST(stream.read_value<LEB128<u64>>());
EXPECT_EQ(out64, NumericLimits<u32>::max());
}
}
@ -131,43 +131,43 @@ TEST_CASE(overflow_sizeof_output_signed)
{
u8 i32_max_plus_one[] = { 0x80, 0x80, 0x80, 0x80, 0x08 };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { i32_max_plus_one, sizeof(i32_max_plus_one) }));
EXPECT(stream->read_value<LEB128<i32>>().is_error());
FixedMemoryStream stream { ReadonlyBytes { i32_max_plus_one, sizeof(i32_max_plus_one) } };
EXPECT(stream.read_value<LEB128<i32>>().is_error());
MUST(stream->seek(0));
i64 out64 = MUST(stream->read_value<LEB128<i64>>());
MUST(stream.seek(0));
i64 out64 = MUST(stream.read_value<LEB128<i64>>());
EXPECT_EQ(out64, static_cast<i64>(NumericLimits<i32>::max()) + 1);
}
u8 i32_max[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x07 };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { i32_max, sizeof(i32_max) }));
i32 out = MUST(stream->read_value<LEB128<i32>>());
FixedMemoryStream stream { ReadonlyBytes { i32_max, sizeof(i32_max) } };
i32 out = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(out, NumericLimits<i32>::max());
MUST(stream->seek(0));
i64 out64 = MUST(stream->read_value<LEB128<i64>>());
MUST(stream.seek(0));
i64 out64 = MUST(stream.read_value<LEB128<i64>>());
EXPECT_EQ(out64, NumericLimits<i32>::max());
}
u8 i32_min_minus_one[] = { 0xFF, 0xFF, 0xFF, 0xFF, 0x77 };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { i32_min_minus_one, sizeof(i32_min_minus_one) }));
EXPECT(stream->read_value<LEB128<i32>>().is_error());
FixedMemoryStream stream { ReadonlyBytes { i32_min_minus_one, sizeof(i32_min_minus_one) } };
EXPECT(stream.read_value<LEB128<i32>>().is_error());
MUST(stream->seek(0));
i64 out64 = MUST(stream->read_value<LEB128<i64>>());
MUST(stream.seek(0));
i64 out64 = MUST(stream.read_value<LEB128<i64>>());
EXPECT_EQ(out64, static_cast<i64>(NumericLimits<i32>::min()) - 1);
}
u8 i32_min[] = { 0x80, 0x80, 0x80, 0x80, 0x78 };
{
auto stream = MUST(FixedMemoryStream::construct(ReadonlyBytes { i32_min, sizeof(i32_min) }));
i32 out = MUST(stream->read_value<LEB128<i32>>());
FixedMemoryStream stream { ReadonlyBytes { i32_min, sizeof(i32_min) } };
i32 out = MUST(stream.read_value<LEB128<i32>>());
EXPECT_EQ(out, NumericLimits<i32>::min());
MUST(stream->seek(0));
i64 out64 = MUST(stream->read_value<LEB128<i64>>());
MUST(stream.seek(0));
i64 out64 = MUST(stream.read_value<LEB128<i64>>());
EXPECT_EQ(out64, NumericLimits<i32>::min());
}
}