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package com.sun.tools.xjc.reader.xmlschema;
import com.sun.tools.xjc.model.Multiplicity;
import com.sun.xml.xsom.XSElementDecl;
import com.sun.xml.xsom.XSModelGroup;
import com.sun.xml.xsom.XSModelGroupDecl;
import com.sun.xml.xsom.XSParticle;
import com.sun.xml.xsom.XSWildcard;
import com.sun.xml.xsom.visitor.XSTermFunction;
import static com.sun.tools.xjc.model.Multiplicity.ONE;
import static com.sun.tools.xjc.model.Multiplicity.ZERO;
/**
* Counts {@link Multiplicity} for a particle/term.
*
* @author Kohsuke Kawaguchi
*/
public final class MultiplicityCounter implements XSTermFunction<Multiplicity> {
public static final MultiplicityCounter theInstance = new MultiplicityCounter();
private MultiplicityCounter() {}
public Multiplicity particle( XSParticle p ) {
Multiplicity m = p.getTerm().apply(this);
Integer max;
if(m.max==null || p.getMaxOccurs()==XSParticle.UNBOUNDED)
max=null;
else
max=p.getMaxOccurs();
return Multiplicity.multiply( m, Multiplicity.create(p.getMinOccurs(),max) );
}
public Multiplicity wildcard(XSWildcard wc) {
return ONE;
}
public Multiplicity modelGroupDecl(XSModelGroupDecl decl) {
return modelGroup(decl.getModelGroup());
}
public Multiplicity modelGroup(XSModelGroup group) {
boolean isChoice = group.getCompositor() == XSModelGroup.CHOICE;
Multiplicity r = ZERO;
for( XSParticle p : group.getChildren()) {
Multiplicity m = particle(p);
if(r==null) {
r=m;
continue;
}
if(isChoice) {
r = Multiplicity.choice(r,m);
} else {
r = Multiplicity.group(r,m);
}
}
return r;
}
public Multiplicity elementDecl(XSElementDecl decl) {
return ONE;
}
}