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java.lang.Objectorg.lsmp.djep.xjep.DoNothingVisitor
org.lsmp.djep.xjep.CommandVisitor
public class CommandVisitor
Executes commands like diff and eval embedded in expression trees. For example you could do
eval(diff(x^3,x),x,2)to differentiate x^3 and then substitute x=2 to get the value 12. To use do
JEP j = ...; Node in = ...; TreeUtils tu = new TreeUtils(j); CommandVisitor cv = new CommandVisitor(tu); Node out = cv.process(in);Commands to be executed must implement
CommandVisitorI and PostfixMathCommandI.
See Eval for an example of this.
See ParserVisitor for details on the VisitorPattern.
| Constructor Summary | |
|---|---|
CommandVisitor()
private default constructor to prevent init without a tree utils |
|
| Method Summary | |
|---|---|
Node |
process(Node node,
XJep xj)
Descends the tree processing all diff, eval and simplify options |
java.lang.Object |
visit(ASTFunNode node,
java.lang.Object data)
|
| Methods inherited from class org.lsmp.djep.xjep.DoNothingVisitor |
|---|
acceptChildrenAsArray, visit, visit, visit, visit |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public CommandVisitor()
| Method Detail |
|---|
public Node process(Node node,
XJep xj)
throws ParseException
ParseException
public java.lang.Object visit(ASTFunNode node,
java.lang.Object data)
throws ParseException
visit in interface ParserVisitorvisit in class DoNothingVisitorParseException
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