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clean up Array.get(), Array.set(), and Method.invoke() implementations

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This commit is contained in:
Joel Dice
2007-08-18 11:53:30 -06:00
parent d169e4eadf
commit aa5e751e69
6 changed files with 170 additions and 157 deletions
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117
classpath/java/lang/reflect/Array.java
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@ -3,9 +3,86 @@ package java.lang.reflect;
public final class Array {
private Array() { }
public static native Object get(Object array, int index);
public static Object get(Object array, int index) {
String className = array.getClass().getName();
if (! className.startsWith("[")) {
throw new IllegalArgumentException();
}
public static native void set(Object array, int index, Object value);
switch (className.charAt(1)) {
case 'B':
return Byte.valueOf(((byte[]) array)[index]);
case 'C':
return Character.valueOf(((char[]) array)[index]);
case 'D':
return Double.valueOf(((double[]) array)[index]);
case 'F':
return Float.valueOf(((float[]) array)[index]);
case 'I':
return Integer.valueOf(((int[]) array)[index]);
case 'J':
return Long.valueOf(((long[]) array)[index]);
case 'S':
return Short.valueOf(((short[]) array)[index]);
case 'Z':
return Boolean.valueOf(((boolean[]) array)[index]);
case 'L':
case '[':
return getObject(array, index);
default:
throw new Error();
}
}
private static native Object getObject(Object array, int index);
public static void set(Object array, int index, Object value) {
String className = array.getClass().getName();
if (! className.startsWith("[")) {
throw new IllegalArgumentException();
}
switch (className.charAt(1)) {
case 'B':
((byte[]) array)[index] = (Byte) value;
break;
case 'C':
((char[]) array)[index] = (Character) value;
break;
case 'D':
((double[]) array)[index] = (Double) value;
break;
case 'F':
((float[]) array)[index] = (Float) value;
break;
case 'I':
((int[]) array)[index] = (Integer) value;
break;
case 'J':
((long[]) array)[index] = (Long) value;
break;
case 'S':
((short[]) array)[index] = (Short) value;
break;
case 'Z':
((boolean[]) array)[index] = (Boolean) value;
break;
case 'L':
case '[':
if (array.getClass().getComponentType().isInstance(value)) {
setObject(array, index, value);
} else {
throw new IllegalArgumentException();
}
break;
default:
throw new Error();
}
}
private static native void setObject(Object array, int index, Object value);
public static native int getLength(Object array);
@ -16,22 +93,26 @@ public final class Array {
throw new NegativeArraySizeException();
}
if (elementType.equals(boolean.class)) {
return new boolean[length];
} else if (elementType.equals(byte.class)) {
return new byte[length];
} else if (elementType.equals(char.class)) {
return new char[length];
} else if (elementType.equals(short.class)) {
return new short[length];
} else if (elementType.equals(int.class)) {
return new int[length];
} else if (elementType.equals(long.class)) {
return new long[length];
} else if (elementType.equals(float.class)) {
return new float[length];
} else if (elementType.equals(double.class)) {
return new double[length];
if (elementType.isPrimitive()) {
if (elementType.equals(boolean.class)) {
return new boolean[length];
} else if (elementType.equals(byte.class)) {
return new byte[length];
} else if (elementType.equals(char.class)) {
return new char[length];
} else if (elementType.equals(short.class)) {
return new short[length];
} else if (elementType.equals(int.class)) {
return new int[length];
} else if (elementType.equals(long.class)) {
return new long[length];
} else if (elementType.equals(float.class)) {
return new float[length];
} else if (elementType.equals(double.class)) {
return new double[length];
} else {
throw new IllegalArgumentException();
}
} else {
return makeObjectArray(elementType, length);
}