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package com.sun.tools.xjc.reader.relaxng;
import com.sun.tools.xjc.model.CBuiltinLeafInfo;
import com.sun.tools.xjc.model.TypeUse;
import com.sun.tools.xjc.model.TypeUseFactory;
import org.kohsuke.rngom.digested.DAttributePattern;
import org.kohsuke.rngom.digested.DChoicePattern;
import org.kohsuke.rngom.digested.DContainerPattern;
import org.kohsuke.rngom.digested.DDataPattern;
import org.kohsuke.rngom.digested.DElementPattern;
import org.kohsuke.rngom.digested.DEmptyPattern;
import org.kohsuke.rngom.digested.DGrammarPattern;
import org.kohsuke.rngom.digested.DGroupPattern;
import org.kohsuke.rngom.digested.DInterleavePattern;
import org.kohsuke.rngom.digested.DListPattern;
import org.kohsuke.rngom.digested.DMixedPattern;
import org.kohsuke.rngom.digested.DNotAllowedPattern;
import org.kohsuke.rngom.digested.DOneOrMorePattern;
import org.kohsuke.rngom.digested.DOptionalPattern;
import org.kohsuke.rngom.digested.DPattern;
import org.kohsuke.rngom.digested.DPatternVisitor;
import org.kohsuke.rngom.digested.DRefPattern;
import org.kohsuke.rngom.digested.DTextPattern;
import org.kohsuke.rngom.digested.DValuePattern;
import org.kohsuke.rngom.digested.DZeroOrMorePattern;
/**
* Walks the pattern tree and binds it to a {@link TypeUse}.
*
* The singleton instance is kept in {@link RELAXNGCompiler}.
*
* TODO: I should really normalize before process.
*
* @author Kohsuke Kawaguchi
*/
final class TypeUseBinder implements DPatternVisitor<TypeUse> {
private final RELAXNGCompiler compiler;
public TypeUseBinder(RELAXNGCompiler compiler) {
this.compiler = compiler;
}
public TypeUse onGrammar(DGrammarPattern p) {
return CBuiltinLeafInfo.STRING;
}
public TypeUse onChoice(DChoicePattern p) {
// can't support unions
return CBuiltinLeafInfo.STRING;
}
public TypeUse onData(DDataPattern p) {
return onDataType(p.getDatatypeLibrary(), p.getType());
}
public TypeUse onValue(DValuePattern p) {
return onDataType(p.getDatatypeLibrary(),p.getType());
}
private TypeUse onDataType(String datatypeLibrary, String type) {
DatatypeLib lib = compiler.datatypes.get(datatypeLibrary);
if(lib!=null) {
TypeUse use = lib.get(type);
if(use!=null)
return use;
}
// unknown
return CBuiltinLeafInfo.STRING;
}
public TypeUse onInterleave(DInterleavePattern p) {
return onContainer(p);
}
public TypeUse onGroup(DGroupPattern p) {
return onContainer(p);
}
private TypeUse onContainer(DContainerPattern p) {
TypeUse t=null;
for( DPattern child : p ) {
TypeUse s = child.accept(this);
if(t!=null && t!=s)
return CBuiltinLeafInfo.STRING; // heterogenous
t = s;
}
return t;
}
public TypeUse onNotAllowed(DNotAllowedPattern p) {
// TODO
return error();
}
public TypeUse onEmpty(DEmptyPattern p) {
return CBuiltinLeafInfo.STRING;
}
public TypeUse onList(DListPattern p) {
return p.getChild().accept(this);
}
public TypeUse onOneOrMore(DOneOrMorePattern p) {
return TypeUseFactory.makeCollection( p.getChild().accept(this) );
}
public TypeUse onZeroOrMore(DZeroOrMorePattern p) {
return TypeUseFactory.makeCollection( p.getChild().accept(this) );
}
public TypeUse onOptional(DOptionalPattern p) {
return CBuiltinLeafInfo.STRING;
}
public TypeUse onRef(DRefPattern p) {
// TODO: check for enums
return p.getTarget().getPattern().accept(this);
}
public TypeUse onText(DTextPattern p) {
return CBuiltinLeafInfo.STRING;
}
//
//
// Not allowed in this context
//
//
public TypeUse onAttribute(DAttributePattern p) {
return error();
}
public TypeUse onElement(DElementPattern p) {
return error();
}
public TypeUse onMixed(DMixedPattern p) {
return error();
}
private TypeUse error() {
throw new IllegalStateException();
}
}