CodeGenpublic abstract class CodeGen extends Object implements com.vladium.jcd.opcodes.IOpcodes
| Constructors Summary |
|---|
private CodeGen()
|
| Methods Summary |
|---|
| public static void | load_local_object_var(com.vladium.util.ByteArrayOStream out, int index)
if (index <= 3)
{
out.write (_aload_0 + index); // aload_n
}
else if (index <= 0xFF)
{
out.write2 (_aload,
index); // indexbyte
}
else
{
out.write4 (_wide,
_aload,
index >>> 8, // indexbyte1
index); // indexbyte2
}
| | public static void | push_constant_index(com.vladium.util.ByteArrayOStream out, int index)
if (index <= 0xFF)
{
out.write2 (_ldc,
index); // indexbyte
}
else
{
out.write3 (_ldc_w,
index >>> 8, // indexbyte1
index); // indexbyte2
}
// [stack +1]
| | public static void | push_int_value(com.vladium.util.ByteArrayOStream out, com.vladium.jcd.cls.ClassDef cls, int value)
if ((-1 <= value) && (value <= 5))
{
out.write (_iconst_0 + value);
}
else if ((-128 <= value) && (value <= 127))
{
out.write2 (_bipush,
value); // byte1
}
else if ((-32768 <= value) && (value <= 32767))
{
out.write3 (_sipush,
value >>> 8, // byte1
value); // byte2
}
else // we have to create an Integer constant in the constant pool:
{
// TODO: check if it's already there
final int index = cls.getConstants ().add (new CONSTANT_Integer_info (value));
if (index <= 0xFF)
{
out.write2 (_ldc,
index); // index
}
else // must use ldc_w
{
out.write3 (_ldc_w,
index >>> 8, // indexbyte1
index); // indexbyte2
}
}
// [stack +1]
| | public static void | store_local_object_var(com.vladium.util.ByteArrayOStream out, int index)
if (index <= 3)
{
out.write (_astore_0 + index); // astore_n
}
else if (index <= 0xFF)
{
out.write2 (_astore,
index); // indexbyte
}
else
{
out.write4 (_wide,
_astore,
index >>> 8, // indexbyte1
index); // indexbyte2
}
// [stack -1]
|
|
