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bytecode2 (#2)

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Reviewed-on: #2
This commit was merged in pull request #2.
This commit is contained in:
Andre Wagner
2026-04-28 19:50:48 -05:00
parent 3f097b0ba8
commit d8130272a0
11 changed files with 529 additions and 68 deletions
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67
src/bytecode/bytearray.cc
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@@ -4,7 +4,7 @@
namespace tyche {
void ByteArray::add_byte(uint32_t addr, uint8_t byte)
void ByteArray::set_byte(uint32_t addr, uint8_t byte)
{
try {
data_.at(addr) = byte;
@@ -14,31 +14,51 @@ void ByteArray::add_byte(uint32_t addr, uint8_t byte)
}
}
void ByteArray::add_int(uint32_t addr, int32_t value)
void ByteArray::set_int(uint32_t addr, int32_t value)
{
uint32_t zz = ((uint32_t)(value << 1)) ^ ((uint32_t)(value >> 31));
while (zz > 0x7F) {
add_byte(addr++, (zz & 0x7F) | 0x80);
set_byte(addr++, (zz & 0x7F) | 0x80);
zz >>= 7;
}
add_byte(addr, zz & 0x7F);
set_byte(addr, zz & 0x7F);
}
void ByteArray::add_float(uint32_t addr, float value)
void ByteArray::set_uint16(uint32_t addr, uint16_t value)
{
set_byte(addr, (uint8_t) (value));
set_byte(addr+1, (uint8_t) (value >> 8));
}
void ByteArray::set_uint32(uint32_t addr, uint32_t value)
{
set_byte(addr, (uint8_t) (value));
set_byte(addr+1, (uint8_t) (value >> 8));
set_byte(addr+2, (uint8_t) (value >> 16));
set_byte(addr+3, (uint8_t) (value >> 24));
}
void ByteArray::set_float(uint32_t addr, float value)
{
uint32_t bits;
std::memcpy(&bits, &value, 4);
add_byte(addr, (uint8_t)(bits));
add_byte(addr+1, (uint8_t)(bits >> 8));
add_byte(addr+2, (uint8_t)(bits >> 16));
add_byte(addr+3, (uint8_t)(bits >> 24));
set_byte(addr, (uint8_t) (bits));
set_byte(addr+1, (uint8_t) (bits >> 8));
set_byte(addr+2, (uint8_t) (bits >> 16));
set_byte(addr+3, (uint8_t) (bits >> 24));
}
void ByteArray::add_string(uint32_t addr, std::string const& str)
void ByteArray::set_string(uint32_t addr, std::string const& str)
{
for (uint8_t c: str)
add_byte(addr++, c);
add_byte(addr, 0);
set_byte(addr++, c);
set_byte(addr, 0);
}
void ByteArray::set_bytearray(uint32_t addr, ByteArray const& bytearray)
{
for (uint8_t byte: bytearray.data())
set_byte(addr++, byte);
}
uint8_t ByteArray::get_byte(uint32_t addr) const
@@ -46,6 +66,20 @@ uint8_t ByteArray::get_byte(uint32_t addr) const
return data_.at(addr);
}
uint16_t ByteArray::get_uint16(uint32_t addr) const
{
return (uint32_t) get_byte(addr)
| (uint32_t) get_byte(addr+1) << 8;
}
uint32_t ByteArray::get_uint32(uint32_t addr) const
{
return (uint32_t) get_byte(addr)
| (uint32_t) get_byte(addr+1) << 8
| (uint32_t) get_byte(addr+2) << 16
| (uint32_t) get_byte(addr+3) << 24;
}
std::pair<int32_t, size_t> ByteArray::get_int(uint32_t addr) const
{
uint32_t zz = 0;
@@ -62,7 +96,7 @@ std::pair<int32_t, size_t> ByteArray::get_int(uint32_t addr) const
throw BytecodeParsingError("Error parsing int32 at position " + std::to_string(addr));
}
std::pair<float, size_t> ByteArray::get_float(uint32_t addr) const
float ByteArray::get_float(uint32_t addr) const
{
uint32_t bits = (uint32_t) get_byte(addr)
| (uint32_t) get_byte(addr+1) << 8
@@ -70,7 +104,7 @@ std::pair<float, size_t> ByteArray::get_float(uint32_t addr) const
| (uint32_t) get_byte(addr+3) << 24;
float value;
std::memcpy(&value, &bits, 4);
return { value, 4 };
return value;
}
std::pair<std::string, size_t> ByteArray::get_string(uint32_t addr) const
@@ -81,4 +115,9 @@ std::pair<std::string, size_t> ByteArray::get_string(uint32_t addr) const
return { data, data.size() + 1 };
}
void ByteArray::append_bytearray(ByteArray const& bytearray)
{
data_.insert(data_.end(), bytearray.data().begin(), bytearray.data().end());
}
}