if (oa instanceof Set && ob instanceof Collection) {
Set result = new HashSet((Set) oa);
result.retainAll((Collection) ob);
return new ObjectToken(result);
} else {
throw new InterpreterException(
"Unknown object types: expected Set and Collection.");
}
} else {
return a.multiply(b);
}
} catch (Exception ex) {
throw new FunctionCallException("$mul", args[0], args[1],
ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$sub", _theContext.createFunction(new Function() {
// Compute the subtraction operation on scalar arguments,
// or the set subtraction operation on sets.
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
Token b = (Token) args[1];
if (a instanceof ObjectToken && b instanceof ObjectToken) {
Object oa = ((ObjectToken) a).getValue();
Object ob = ((ObjectToken) b).getValue();
if (oa instanceof Collection
&& ob instanceof Collection) {
Collection result;
if (oa instanceof Set) {
result = new HashSet((Set) oa);
} else if (oa instanceof List) {
result = new ArrayList((List) oa);
} else {
throw new Exception(
"Unknown object type: expected Set or List.");
}
result.removeAll((Collection) ob);
return new ObjectToken(result);
} else {
throw new InterpreterException(
"Unknown object types: expected Collection.");
}
} else {
return a.subtract(b);
}
} catch (Exception ex) {
throw new FunctionCallException("$sub", args[0], args[1],
ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$div", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
Token b = (Token) args[1];
return a.divide(b);
} catch (Exception ex) {
throw new FunctionCallException("$div", args[0], args[1],
ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$mod", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
Token b = (Token) args[1];
return a.modulo(b);
} catch (Exception ex) {
throw new FunctionCallException("$mod", args[0], args[1],
ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$size", _theContext.createFunction(new Function() {
// Compute the number of elements in the given set,
// list, or array.
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
if (a instanceof ObjectToken) {
Object oa = ((ObjectToken) a).getValue();
if (oa instanceof Collection) {
return new IntToken(((Collection) oa).size());
} else {
throw new InterpreterException(
"Unknown object type: expected Collection.");
}
} else if (a instanceof ArrayToken) {
return _theContext.createInteger(((ArrayToken) a)
.length());
} else {
throw new InterpreterException(
"Unknown type: expected Array, Set, or List");
}
} catch (Exception ex) {
throw new FunctionCallException("$size", args[0], ex);
}
}
public int arity() {
return 1;
}
}));
env.bind("$createList", _theContext.createFunction(new Function() {
// Create a list that contains the results of applying
// the second argument (a one argument function) to
// every element in the first argument (a collection).
public Object apply(Object[] args) {
try {
Collection c = _theContext.getCollection(args[0]);
FunctionToken f = (FunctionToken) args[1];
Object[] argument = new Object[1];
List res = new ArrayList();
for (Iterator i = c.iterator(); i.hasNext();) {
argument[0] = i.next();
Object listFragment = _theContext.applyFunction(f,
argument);
res.addAll(_theContext.getCollection(listFragment));
}
return _theContext.createList(res);
} catch (Exception ex) {
throw new FunctionCallException("Failed to create list.",
args[0], args[1], ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$createSet", _theContext.createFunction(new Function() {
// Create a set that contains the results of applying
// the second argument (a one argument function) to
// every element in the first argument (a collection).
public Object apply(Object[] args) {
try {
Collection c = _theContext.getCollection(args[0]);
FunctionToken f = (FunctionToken) args[1];
Object[] argument = new Object[1];
Set res = new HashSet();
for (Iterator i = c.iterator(); i.hasNext();) {
argument[0] = i.next();
Object setFragment = _theContext.applyFunction(f,
argument);
res.addAll(_theContext.getCollection(setFragment));
}
return _theContext.createSet(res);
} catch (Exception ex) {
throw new FunctionCallException("Failed to create set.",
args[0], args[1], ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$createMap", _theContext.createFunction(new Function() {
// Create a map that contains the results of applying
// the second argument (a one argument function) to
// every element in the first argument (a collection).
public Object apply(Object[] args) {
try {
Collection c = _theContext.getCollection(args[0]);
FunctionToken f = (FunctionToken) args[1];
Object[] argument = new Object[1];
Map res = new HashMap();
for (Iterator i = c.iterator(); i.hasNext();) {
argument[0] = i.next();
Object mapFragment = _theContext.applyFunction(f,
argument);
res.putAll(_theContext.getMap(mapFragment));
}
return _theContext.createMap(res);
} catch (Exception ex) {
throw new FunctionCallException("Failed to create map.",
args[0], args[1], ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("$iterate", _theContext.createProcedure(new Procedure() {
// Invoke the second argument (a one argument
// procedure) on every element of the first argument
// (a collection).
public void call(Object[] args) {
try {
Collection c = _theContext.getCollection(args[0]);
Object proc = args[1];
Object[] argument = new Object[1];
for (Iterator i = c.iterator(); i.hasNext();) {
argument[0] = i.next();
_theContext.callProcedure(proc, argument);
}
} catch (Exception ex) {
throw new FunctionCallException("Iteration failed.",
args[0], args[1], ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("listToArray", _theContext.createFunction(new Function() {
// Convert the given list to an array.
public Object apply(Object[] args) {
try {
ObjectToken input = (ObjectToken) args[0];
List inputList = (List) input.getValue();
Token[] tokens = new Token[inputList.size()];
tokens = (Token[]) inputList.toArray(tokens);
return new ArrayToken(tokens);
} catch (Exception ex) {
throw new FunctionCallException("listToArray", args[0], ex);
}
}
public int arity() {
return 1;
}
}));
env.bind("listToMatrix", _theContext.createFunction(new Function() {
// Convert the given list to an array.
public Object apply(Object[] args) {
try {
ObjectToken input = (ObjectToken) args[0];
List inputList = (List) input.getValue();
Token[] tokens = new Token[inputList.size()];
tokens = (Token[]) inputList.toArray(tokens);
int rows = _theContext.intValue(args[1]);
int columns = _theContext.intValue(args[2]);
return MatrixToken.arrayToMatrix(tokens, rows, columns);
} catch (Exception ex) {
throw new FunctionCallException("listToArray", args[0], ex);
}
}
public int arity() {
return 3;
}
}));
//
// Xilinx SystemBuilder
//
// constant YSCALE: INT19 := conv_signed( integer( 1.164 * 256), 19 );
// constant RSCALE: INT19 := conv_signed( integer( 1.596 * 256), 19 );
// constant GUSCALE: INT19 := conv_signed( integer(-0.392 * 256), 19 );
// constant GVSCALE: INT19 := conv_signed( integer(-0.813 * 256), 19 );
// constant BSCALE: INT19 := conv_signed( integer( 2.017 * 256), 19 );
// constant YOFFSET: INT19 := conv_signed( 16, 19 );
// constant UVOFFSET: INT19 := conv_signed( 128, 19 );
//
// constant UINT9_zero: UINT9 := (others => '0' );
//
// function INT19_mul( a: INT19; b: INT19 ) return INT19;
// function RGBCLIP( a: INT19 ) return UINT8;
env.bind("UINT9_zero", _theContext.createInteger(0));
env.bind("YSCALE", _theContext.createInteger((int) (1.164 * 256)));
env.bind("RSCALE", _theContext.createInteger((int) (1.596 * 256)));
env.bind("GUSCALE", _theContext.createInteger((int) (-0.392 * 256)));
env.bind("GVSCALE", _theContext.createInteger((int) (-0.813 * 256)));
env.bind("BSCALE", _theContext.createInteger((int) (2.017 * 256)));
env.bind("YOFFSET", _theContext.createInteger(16));
env.bind("UVOFFSET", _theContext.createInteger(128));
env.bind("INT19_mul", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
IntToken a = (IntToken) args[0];
IntToken b = (IntToken) args[1];
int res = (a.intValue() * b.intValue()); // & 0x7ffff;
return _theContext.createInteger(res);
} catch (Exception ex) {
throw new InterpreterException(
"Function 'RGBCLIP': Cannot apply.", ex);
}
}
public int arity() {
return 2;
}
}));
env.bind("RGBCLIP", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
if (a instanceof IntToken) {
int n = ((IntToken) a).intValue() / 256;
int res = (n > 255) ? 255 : ((n < 0) ? 0 : n);
return _theContext.createInteger(res);
} else {
throw new InterpreterException(
"RGBCLIP needs an IntToken.");
}
} catch (Exception ex) {
throw new InterpreterException(
"Function 'RGBCLIP': Cannot apply.", ex);
}
}
public int arity() {
return 1;
}
}));
env.bind("readByte", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
if (a instanceof ObjectToken) {
InputStream s = (InputStream) ((ObjectToken) a)
.getValue();
return _theContext.createInteger(s.read());
} else {
throw new InterpreterException("readByte needs a file.");
}
} catch (Exception ex) {
throw new InterpreterException(
"Function 'readByte': Cannot apply.", ex);
}
}
public int arity() {
return 1;
}
}));
env.bind("openFile", _theContext.createFunction(new Function() {
public Object apply(Object[] args) {
try {
Token a = (Token) args[0];
if (a instanceof StringToken) {
InputStream s = new FileInputStream(((StringToken) a)
.stringValue());
return new ObjectToken(s);
} else {
throw new InterpreterException(
"openFile needs a StringToken.");
}
} catch (Exception ex) {
throw new InterpreterException(
"Function 'openFile': Cannot apply.", ex);
}
}
public int arity() {