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;
}
