protected final void compute() {
size = inputList.size();
if (!inputList.isDefined()) {
outputList.setUndefined();
return;
}
outputList.setDefined(true);
outputList.clear();
if (size == 0) return;
// <Zbynek Konecny 2010-05-13>
/*
* If val is not numeric, we use the underlying Expression of the function and
* plug the list element as variable.
* Deep copy is needed so that we can plug the value repeatedly.
*/
FunctionVariable var = boolFun.getFunction().getFunctionVariable();
for (int i = 0; i < size; i++) {
GeoElement geo = inputList.get(i);
if (geo.isGeoNumeric()) {
if (boolFun.evaluateBoolean(((GeoNumeric) geo).getValue()))
outputList.add(geo.copyInternal(cons));
;
} else {
ExpressionNode ex = (ExpressionNode) boolFun.getFunction().getExpression().deepCopy(kernel);
ex.replaceAndWrap(var, geo.evaluate());
if (((MyBoolean) ex.evaluate()).getBoolean()) outputList.add(geo.copyInternal(cons));
;
}
}
// </Zbynek>
}
/**
* Parses given String str and tries to evaluate it to a double. Returns Double.NaN if something
* went wrong.
*/
public double evaluateToDouble(String str, boolean suppressErrors) {
try {
ValidExpression ve = parser.parseExpression(str);
ExpressionNode en = (ExpressionNode) ve;
en.resolveVariables();
NumberValue nv = (NumberValue) en.evaluate();
return nv.getDouble();
} catch (Exception e) {
e.printStackTrace();
if (!suppressErrors) app.showError("InvalidInput", str);
return Double.NaN;
} catch (MyError e) {
e.printStackTrace();
if (!suppressErrors) app.showError(e);
return Double.NaN;
} catch (Error e) {
e.printStackTrace();
if (!suppressErrors) app.showError("InvalidInput", str);
return Double.NaN;
}
}
// evaluate the current value of the arithmetic tree
protected final void compute() {
// get resulting list of ExpressionNodes
ExpressionValue evlist = root.evaluate();
MyList myList = (evlist instanceof MyList) ? (MyList) evlist : ((GeoList) evlist).getMyList();
int evalListSize = myList.size();
int cachedListSize = list.getCacheSize();
list.clear();
for (int i = 0; i < evalListSize; i++) {
ExpressionValue element = myList.getListElement(i).evaluate();
GeoElement geo = null;
// number result
if (element.isNumberValue()) {
double val = ((NumberValue) element).getDouble();
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a number: set value
if (cachedGeo.isGeoNumeric()) {
((GeoNumeric) cachedGeo).setValue(val);
geo = cachedGeo;
}
}
// no cached number: create new one
if (geo == null) {
geo = new GeoNumeric(cons, val);
}
// add number to list
list.add(geo);
}
// point
else if (element.isVectorValue()) {
GeoVec2D vec = ((VectorValue) element).getVector();
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoPoint()) {
((GeoPoint) cachedGeo).setCoords(vec);
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoPoint point = new GeoPoint(cons);
point.setCoords(vec);
geo = point;
}
// add point to list
list.add(geo);
}
// needed for matrix multiplication
// eg {{1,3,5},{2,4,6}}*{{11,14},{12,15},{13,a}}
else if (element instanceof MyList) {
MyList myList2 = (MyList) element;
GeoList list2 = new GeoList(cons);
list2.clear();
/* removed Michael Borcherds 20080602
* bug: 9PointCubic.ggb (matrix multiplication)
// try to use cached element of type GeoList
GeoList list2 = null;
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a number: set value
if (cachedGeo.isGeoList()) {
list2 = (GeoList) cachedGeo;
}
}
if (list2 == null) {
list2 = new GeoList(cons);
} */
for (int j = 0; j < myList2.size(); j++) {
ExpressionValue en = myList2.getListElement(j);
ExpressionValue ev = en.evaluate();
if (ev instanceof MyDouble) {
GeoNumeric geo2 = new GeoNumeric(cons);
geo2.setValue(((NumberValue) ev).getDouble());
list2.add(geo2);
}
}
list.add(list2);
} else if (element instanceof MyStringBuffer) {
MyStringBuffer str = (MyStringBuffer) element;
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoText()) {
((GeoText) cachedGeo).setTextString(str.toValueString());
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoText text = new GeoText(cons);
text.setTextString(str.toValueString());
geo = text;
}
// add point to list
list.add(geo);
} else if (element instanceof MyBoolean) {
MyBoolean bool = (MyBoolean) element;
// try to use cached element of same type
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoBoolean()) {
((GeoBoolean) cachedGeo).setValue(bool.getBoolean());
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoBoolean geoBool = new GeoBoolean(cons);
geoBool.setValue(bool.getBoolean());
geo = geoBool;
}
// add point to list
list.add(geo);
} else if (element instanceof GeoFunction) {
GeoFunction fun = (GeoFunction) element;
if (i < cachedListSize) {
GeoElement cachedGeo = list.getCached(i);
// the cached element is a point: set value
if (cachedGeo.isGeoFunction()) {
((GeoFunction) cachedGeo).set(fun);
geo = cachedGeo;
}
}
// no cached point: create new one
if (geo == null) {
GeoFunction geoFun = new GeoFunction(cons);
geoFun.set(fun);
geo = geoFun;
}
list.add(geo);
} else {
Application.debug("unsupported list addition: " + element.getClass() + "");
}
}
}
public GeoElement[] processExpressionNode(ExpressionNode n) throws MyError {
// command is leaf: process command
if (n.isLeaf()) {
ExpressionValue leaf = n.getLeft();
if (leaf instanceof Command) {
Command c = (Command) leaf;
c.setLabels(n.getLabels());
return cmdDispatcher.processCommand(c, true);
} else if (leaf instanceof Equation) {
Equation eqn = (Equation) leaf;
eqn.setLabels(n.getLabels());
return processEquation(eqn);
} else if (leaf instanceof Function) {
Function fun = (Function) leaf;
fun.setLabels(n.getLabels());
return processFunction(n, fun);
} else if (leaf instanceof FunctionNVar) {
FunctionNVar fun = (FunctionNVar) leaf;
fun.setLabels(n.getLabels());
return processFunctionNVar(n, fun);
}
}
// ELSE: resolve variables and evaluate expressionnode
n.resolveVariables();
eval = n.evaluate();
boolean dollarLabelFound = false;
ExpressionNode myNode = n;
if (myNode.isLeaf()) myNode = myNode.getLeftTree();
// leaf (no new label specified): just return the existing GeoElement
if (eval.isGeoElement()
&& n.getLabel() == null
&& !(n.operation.equals(Operation.ELEMENT_OF))) {
// take care of spreadsheet $ names: don't loose the wrapper ExpressionNode here
// check if we have a Variable
switch (myNode.getOperation()) {
case $VAR_COL:
case $VAR_ROW:
case $VAR_ROW_COL:
// don't do anything here: we need to keep the wrapper ExpressionNode
// and must not return the GeoElement here
dollarLabelFound = true;
break;
default:
// return the GeoElement
GeoElement[] ret = {(GeoElement) eval};
return ret;
}
}
if (eval.isBooleanValue()) return processBoolean(n, eval);
else if (eval.isNumberValue()) return processNumber(n, eval);
else if (eval.isVectorValue()) return processPointVector(n, eval);
else if (eval.isVector3DValue()) return processPointVector3D(n, eval);
else if (eval.isTextValue()) return processText(n, eval);
else if (eval instanceof MyList) {
return processList(n, (MyList) eval);
} else if (eval instanceof Function) {
return processFunction(n, (Function) eval);
} else if (eval instanceof FunctionNVar) {
return processFunctionNVar(n, (FunctionNVar) eval);
}
// we have to process list in case list=matrix1(1), but not when list=list2
else if (eval instanceof GeoList && myNode.hasOperations()) {
Application.debug("should work");
return processList(n, ((GeoList) eval).getMyList());
} else if (eval.isGeoElement()) {
// e.g. B1 = A1 where A1 is a GeoElement and B1 does not exist yet
// create a copy of A1
if (n.getLabel() != null || dollarLabelFound) {
return processGeoCopy(n.getLabel(), n);
}
}
// REMOVED due to issue 131: http://code.google.com/p/geogebra/issues/detail?id=131
// // expressions like 2 a (where a:x + y = 1)
// // A1=b doesn't work for these objects
// else if (eval instanceof GeoLine) {
// if (((GeoLine)eval).getParentAlgorithm() instanceof AlgoDependentLine) {
// GeoElement[] ret = {(GeoElement) eval };
// return ret;
// }
//
// }
// if we get here, nothing worked
Application.debug("Unhandled ExpressionNode: " + eval + ", " + eval.getClass());
return null;
}
