/**
* Read a single element_value structure.
*
* @param data
* @param cp
*/
private static Object readElementValue(ByteBuffer data, VmCP cp) {
final int tag = data.get() & 0xFF;
switch (tag) {
case 'B':
return (byte) cp.getInt(data.getChar());
case 'C':
return (char) cp.getInt(data.getChar());
case 'D':
return cp.getDouble(data.getChar());
case 'F':
return cp.getFloat(data.getChar());
case 'I':
return cp.getInt(data.getChar());
case 'J':
return cp.getLong(data.getChar());
case 'S':
return (short) cp.getInt(data.getChar());
case 'Z':
return cp.getInt(data.getChar()) != 0;
case 's':
return cp.getAny(data.getChar());
case 'e': // enum
{
final String typeDescr = cp.getUTF8(data.getChar());
final String constName = cp.getUTF8(data.getChar());
return new VmAnnotation.EnumValue(typeDescr, constName);
}
case 'c': // class
{
final String classDescr = cp.getUTF8(data.getChar());
return new VmAnnotation.ClassInfo(classDescr);
}
case '@': // annotation
return readAnnotation(data, cp, true);
case '[': // array
{
final int numValues = data.getChar();
final Object[] arr = new Object[numValues];
for (int i = 0; i < numValues; i++) {
arr[i] = readElementValue(data, cp);
}
return arr;
}
default:
throw new ClassFormatError("Unknown element_value tag '" + (char) tag + '\'');
}
}
/**
* Read the fields table
*
* @param data
* @param cp
* @param slotSize
* @param loader
*/
private static FieldData[] readFields(
ByteBuffer data, VmCP cp, int slotSize, VmClassLoader loader) {
final int fcount = data.getChar();
if (fcount > 0) {
final FieldData[] ftable = new FieldData[fcount];
for (int i = 0; i < fcount; i++) {
int modifiers = data.getChar();
final String name = cp.getUTF8(data.getChar());
final String signature = cp.getUTF8(data.getChar());
final boolean isstatic = ((modifiers & Modifier.ACC_STATIC) != 0);
// Read field attributes
final int acount = data.getChar();
VmAnnotation[] rVisAnn = null;
byte[] rawAnnotations = null;
Object constantValue = null;
for (int a = 0; a < acount; a++) {
final String attrName = cp.getUTF8(data.getChar());
final int length = data.getInt();
if (isstatic && VmArray.equals(ConstantValueAttrName, attrName)) {
constantValue = cp.getAny(data.getChar());
} else if (VmArray.equals(RuntimeVisibleAnnotationsAttrName, attrName)) {
rawAnnotations = new byte[length];
data.slice().get(rawAnnotations);
rVisAnn = readRuntimeAnnotations(data, cp, true, loader);
} else if (VmArray.equals(RuntimeInvisibleAnnotationsAttrName, attrName)) {
readRuntimeAnnotations(data, cp, false, loader);
} else {
skip(data, length);
}
}
ftable[i] =
new FieldData(name, signature, modifiers, constantValue, rVisAnn, rawAnnotations);
}
return ftable;
} else {
return null;
}
}
