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package com.sun.codemodel;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Collections;
import java.util.ArrayList;
/**
* Represents X<Y>.
*
* TODO: consider separating the decl and the use.
*
* @author
* Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
*/
class JNarrowedClass extends JClass {
/**
* A generic class with type parameters.
*/
final JClass basis;
/**
* Arguments to those parameters.
*/
private final List<JClass> args;
JNarrowedClass(JClass basis, JClass arg) {
this(basis,Collections.singletonList(arg));
}
JNarrowedClass(JClass basis, List<JClass> args) {
super(basis.owner());
this.basis = basis;
assert !(basis instanceof JNarrowedClass);
this.args = args;
}
@Override
public JClass narrow( JClass clazz ) {
List<JClass> newArgs = new ArrayList<JClass>(args);
newArgs.add(clazz);
return new JNarrowedClass(basis,newArgs);
}
@Override
public JClass narrow( JClass... clazz ) {
List<JClass> newArgs = new ArrayList<JClass>(args);
newArgs.addAll(Arrays.asList(clazz));
return new JNarrowedClass(basis,newArgs);
}
public String name() {
StringBuilder buf = new StringBuilder();
buf.append(basis.name());
buf.append('<');
boolean first = true;
for (JClass c : args) {
if(first)
first = false;
else
buf.append(',');
buf.append(c.name());
}
buf.append('>');
return buf.toString();
}
public String fullName() {
StringBuilder buf = new StringBuilder();
buf.append(basis.fullName());
buf.append('<');
boolean first = true;
for (JClass c : args) {
if(first)
first = false;
else
buf.append(',');
buf.append(c.fullName());
}
buf.append('>');
return buf.toString();
}
@Override
public String binaryName() {
StringBuilder buf = new StringBuilder();
buf.append(basis.binaryName());
buf.append('<');
boolean first = true;
for (JClass c : args) {
if(first)
first = false;
else
buf.append(',');
buf.append(c.binaryName());
}
buf.append('>');
return buf.toString();
}
@Override
public void generate(JFormatter f) {
f.t(basis).p('<').g(args).p(JFormatter.CLOSE_TYPE_ARGS);
}
@Override
void printLink(JFormatter f) {
basis.printLink(f);
f.p("{@code <}");
boolean first = true;
for( JClass c : args ) {
if(first)
first = false;
else
f.p(',');
c.printLink(f);
}
f.p("{@code >}");
}
public JPackage _package() {
return basis._package();
}
public JClass _extends() {
JClass base = basis._extends();
if(base==null) return base;
return base.substituteParams(basis.typeParams(),args);
}
public Iterator<JClass> _implements() {
return new Iterator<JClass>() {
private final Iterator<JClass> core = basis._implements();
public void remove() {
core.remove();
}
public JClass next() {
return core.next().substituteParams(basis.typeParams(),args);
}
public boolean hasNext() {
return core.hasNext();
}
};
}
@Override
public JClass erasure() {
return basis;
}
public boolean isInterface() {
return basis.isInterface();
}
public boolean isAbstract() {
return basis.isAbstract();
}
@Override
public boolean isArray() {
return false;
}
//
// Equality is based on value
//
@Override
public boolean equals(Object obj) {
if(!(obj instanceof JNarrowedClass)) return false;
return fullName().equals(((JClass)obj).fullName());
}
@Override
public int hashCode() {
return fullName().hashCode();
}
protected JClass substituteParams(JTypeVar[] variables, List<JClass> bindings) {
JClass b = basis.substituteParams(variables,bindings);
boolean different = b!=basis;
List<JClass> clazz = new ArrayList<JClass>(args.size());
for( int i=0; i<clazz.size(); i++ ) {
JClass c = args.get(i).substituteParams(variables,bindings);
clazz.set(i,c);
different |= c != args.get(i);
}
if(different)
return new JNarrowedClass(b,clazz);
else
return this;
}
@Override
public List<JClass> getTypeParameters() {
return args;
}
}