private static Object dereferenceArrayDims(
Interp interp, // Current
// interpreter.
Object arrayObj, // Array to dereference. Must be an array.
int numDerefDims, // Number of dimensions to dereference.
TclObject indexListObj) // Index to dereference in each dim.
throws TclException // May encounter bad array index or
// dereference a null array value.
{
// Before derefencing any dimensions, check that the indexList isn't too
// large--we want to return an array.
int numDims = JavaInfoCmd.getNumDimsFromClass(arrayObj.getClass());
if (numDims < numDerefDims) {
throw new TclException(
interp,
"bad indexList \""
+ indexListObj.toString()
+ "\": javaObj only has "
+ numDims
+ " dimension(s)");
}
Object subArrayObj = arrayObj;
for (int dim = 0; dim < numDerefDims - 1; dim++) {
int index = TclInteger.getInt(interp, TclList.index(interp, indexListObj, dim));
try {
subArrayObj = Array.get(subArrayObj, index);
} catch (ArrayIndexOutOfBoundsException e) {
int max = Array.getLength(subArrayObj) - 1;
throw new TclException(
interp, "array index \"" + index + "\" is out of bounds: must be between 0 and " + max);
}
if (subArrayObj == null) {
throw new TclException(
interp,
"null value in dimension " + dim + ": can't dereference " + numDims + " dimensions");
}
}
return subArrayObj;
}
public void cmdProc(
Interp interp, // Current interpreter.
TclObject argv[]) // Argument list.
throws TclException // If wrong number of args, a
// standard Tcl exception;
// If an exception is encountered
// during the invokation of the method,
// the Exception object will be stored
// in the errorCode of the interp.
{
boolean convert;
int optionIdx, numArgs;
Object subArrayObj;
Class subArrayClass;
int option, index, numDims, count;
TclObject indexListObj;
if (argv.length < 2) {
throw new TclNumArgsException(interp, 1, argv, "?-noconvert? option ?arg arg ...?");
}
String arg1 = argv[1].toString();
if ((arg1.length() >= 2) && (NOCONVERT.startsWith(arg1))) {
// numArgs is the number of optional arguments after the
// sub-command.
convert = false;
optionIdx = 2;
numArgs = argv.length - 3;
} else {
convert = true;
optionIdx = 1;
numArgs = argv.length - 2;
}
if (numArgs < 0) {
throw new TclNumArgsException(interp, 1, argv, "?-noconvert? option ?arg arg ...?");
}
// If the <option> argument to the array object command is one of the
// array sub-commands, then proceed to the switch statement below.
// Otherwise, the array object behaves as a reflect object by calling
// ReflectObject.cmdProc, and <option> will be treated as a method
// of the array object.
//
// We can be sure that there is no conflect between the array
// sub-commands and the method of the array object. This is
// because the array object is an instance of java.lang.Object,
// which has only the following methods (as of JDK 1.1): getClass,
// hashCode, equals, wait, toString, notify, notifyAll
try {
option = TclIndex.get(interp, argv[optionIdx], validCmds, "option", TCL.EXACT);
} catch (TclException e) {
try {
int startIdx = optionIdx + 1;
FuncSig.get(
interp, javaClass, argv[optionIdx], argv, startIdx, argv.length - startIdx, false);
} catch (TclException e1) {
throw new TclException(
interp,
"bad option \""
+ argv[optionIdx]
+ "\": must be length, get, getrange, "
+ "set, setrange, or a valid method signature");
}
super.cmdProc(interp, argv);
return;
}
switch (option) {
case OPT_LENGTH:
if (numArgs != 0) {
throw new TclNumArgsException(interp, optionIdx + 1, argv, "");
}
if (convert == false) {
throw new TclException(
interp, "-noconvert flag not allowed for the \"length\" sub-command");
}
interp.setResult(Array.getLength(javaObj));
return;
case OPT_GET:
if (numArgs != 1) {
throw new TclNumArgsException(interp, optionIdx + 1, argv, "indexList");
}
indexListObj = argv[optionIdx + 1];
numDims = TclList.getLength(interp, indexListObj);
if (numDims == 0) {
subArrayObj = javaObj;
subArrayClass = dereferenceClassDims(interp, javaClass, 1);
index = 0;
} else {
// Dereference all but the last dimension specified. Set
// the interpreter result to the index'th element of the
// "subArrayObj".
subArrayObj = dereferenceArrayDims(interp, javaObj, numDims, indexListObj);
subArrayClass = dereferenceClassDims(interp, javaClass, numDims);
index = TclInteger.getInt(interp, TclList.index(interp, indexListObj, numDims - 1));
}
// Set the interpreter result to a TclObject containing the index'th
// element of "subArrayObj".
interp.setResult(getArrayElt(interp, subArrayObj, subArrayClass, index, convert));
return;
case OPT_SET:
if (numArgs != 2) {
throw new TclNumArgsException(interp, optionIdx + 1, argv, "indexList value");
}
if (convert == false) {
throw new TclException(interp, "-noconvert flag not allowed for the \"set\" sub-command");
}
indexListObj = argv[optionIdx + 1];
numDims = TclList.getLength(interp, indexListObj);
if (numDims == 0) {
subArrayObj = javaObj;
subArrayClass = dereferenceClassDims(interp, javaClass, 1);
index = 0;
} else {
// Dereference all but the last dimension specified. Set
// the value of index'th element of the "subArrayObj" to
// the value in argv[optionIdx + 2].
subArrayObj = dereferenceArrayDims(interp, javaObj, numDims, indexListObj);
subArrayClass = dereferenceClassDims(interp, javaClass, numDims);
index = TclInteger.getInt(interp, TclList.index(interp, indexListObj, numDims - 1));
}
// Set the value of the index'th element of "subArrayObj" to the
// value
// in the TclObject argv[optionIdx + 2].
setArrayElt(interp, subArrayObj, subArrayClass, index, argv[optionIdx + 2]);
interp.resetResult();
return;
case OPT_GETRANGE:
if (numArgs > 2) {
throw new TclNumArgsException(interp, optionIdx + 1, argv, "?indexList ?count??");
}
// If an index list is specified, dereference all but the last
// dimension specified. If the index list is empty, getrange
// behaves as an identity function and returns argv[0].
subArrayObj = javaObj;
subArrayClass = dereferenceClassDims(interp, javaClass, 1);
index = 0;
if (numArgs > 0) {
indexListObj = argv[optionIdx + 1];
numDims = TclList.getLength(interp, indexListObj);
if (numDims > 0) {
subArrayObj = dereferenceArrayDims(interp, javaObj, numDims, indexListObj);
subArrayClass = dereferenceClassDims(interp, javaClass, numDims);
index = TclInteger.getInt(interp, TclList.index(interp, indexListObj, numDims - 1));
}
}
// The variable "count" represents the number of elements to
// return. The default is the array size less the first index
// (the remaining elements of the array). If a count is
// specified and is smaller than the default, the default is
// overridden.
count = Array.getLength(subArrayObj) - index;
if (numArgs > 1) {
count = Math.min(count, TclInteger.getInt(interp, argv[optionIdx + 2]));
}
// Set the interpreter result to a TclList containing "count"
// elements
// of the "subArrayObj", starting with the index'th element.
interp.setResult(getArrayElts(interp, subArrayObj, subArrayClass, index, count, convert));
return;
case OPT_SETRANGE:
if ((numArgs < 1) || (numArgs > 3)) {
throw new TclNumArgsException(
interp, optionIdx + 1, argv, "?indexList ?count?? valueList");
}
if (convert == false) {
throw new TclException(
interp, "-noconvert flag not allowed for the \"setrange\" sub-command");
}
TclObject tclValueListObj = argv[argv.length - 1];
// If an index list is specified, dereference all but the last
// dimension specified. If the index list is empty, setrange
// initialized the array object as it would in the java::new
// command.
subArrayObj = javaObj;
subArrayClass = dereferenceClassDims(interp, javaClass, 1);
index = 0;
if (numArgs > 1) {
indexListObj = argv[optionIdx + 1];
numDims = TclList.getLength(interp, indexListObj);
if (numDims > 0) {
subArrayObj = dereferenceArrayDims(interp, javaObj, numDims, indexListObj);
subArrayClass = dereferenceClassDims(interp, javaClass, numDims);
index = TclInteger.getInt(interp, TclList.index(interp, indexListObj, numDims - 1));
}
}
// "count" represents the number of elements to set. The
// default is the minimum of the valueList size and array size
// less the first index (the remaining elements of the array).
// If a count is specified and is smaller than the default,
// the default is overridden.
count =
Math.min(
TclList.getLength(interp, tclValueListObj), Array.getLength(subArrayObj) - index);
if (numArgs > 2) {
count = Math.min(count, TclInteger.getInt(interp, argv[optionIdx + 2]));
}
// Set the value of "count" elements of the "subArrayObj", starting
// with the index'th element, to the values in tclValueListObj.
setArrayElts(interp, subArrayObj, subArrayClass, index, count, tclValueListObj);
interp.resetResult();
return;
}
}
static Object initArray(
Interp interp, // Current interpreter.
TclObject sizeListObj, // List of dimension sizes.
int sizeListLen, // Size of sizeListObj.
int dim, // Current dimension.
int numDims, // Number of dimensions to allocate.
Class cls, // Type of Array.
TclObject valueListObj) // List to populate the Array.
throws TclException // May encounter TclList elt of wrong
// type in sizeListObj or valueListObj.
{
Class compCls = cls.getComponentType();
int valueListLen = 0;
if (valueListObj != null) {
valueListLen = TclList.getLength(interp, valueListObj);
}
// Set arrayLength to be the dim'th dimension size in sizeListObj. If
// sizeListObj doesn't contain dim elts, the array length is the length
// of valueListObj.
//
// Initialize the "arrayObj" to size "arrayLength".
int arrayLength;
if (dim < sizeListLen) {
arrayLength = TclInteger.getInt(interp, TclList.index(interp, sizeListObj, dim));
} else {
arrayLength = valueListLen;
}
if ((arrayLength == 0) && (dim < (numDims - 1))) {
throw new TclException(
interp,
"cannot initialize a "
+ numDims
+ " dimensional array with zero size in dimension "
+ dim);
}
Object arrayObj;
try {
arrayObj = Array.newInstance(compCls, arrayLength);
} catch (NegativeArraySizeException ex) {
throw new TclException(interp, "negative array size " + arrayLength);
}
if (compCls.isArray()) {
// Initialize each subArray "i" according to the dim+1'st elt in
// sizeListObj and i'th elt in valueListObj.
int nextDim = dim + 1;
for (int i = 0; i < arrayLength; i++) {
TclObject subValueListObj = null;
if (i < valueListLen) {
subValueListObj = TclList.index(interp, valueListObj, i);
}
Object subArrayObj =
initArray(interp, sizeListObj, sizeListLen, nextDim, numDims, compCls, subValueListObj);
Array.set(arrayObj, i, subArrayObj);
}
} else if (valueListLen > 0) {
// Set the value of "count" elements of the "subArrayObj", starting
// with the 0'th element, to the values in valueListObj.
int count = Math.min(arrayLength, valueListLen);
setArrayElts(interp, arrayObj, compCls, 0, count, valueListObj);
}
return arrayObj;
}