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package ftbsc.lll.proxies.impl;
import ftbsc.lll.proxies.AbstractProxy;
import ftbsc.lll.proxies.ProxyType;
import ftbsc.lll.proxies.QualifiableProxy;
import org.objectweb.asm.Type;
import java.lang.reflect.Field;
/**
* A container for information about class fields to be used
* in ASM patching.
* @since 0.3.0
*/
public class FieldProxy extends AbstractProxy {
/**
* Protected constructor, called only from the builder.
* @param name the name of the field
* @param descriptor the descriptor of the field
* @param modifiers the modifiers of the field
* @param parent the {@link QualifiableProxy} for the parent
*/
protected FieldProxy(String name, String descriptor, int modifiers, QualifiableProxy parent) {
super(name, descriptor, modifiers, parent, ProxyType.FIELD);
}
/**
* A public constructor, builds a proxy from a {@link Field}
* obtained from reflection.
* @param f the {@link Field} object corresponding to this.
*/
public FieldProxy(Field f) {
this(f.getName(), Type.getDescriptor(f.getType()), f.getModifiers(), TypeProxy.from(f.getDeclaringClass()));
}
/**
* Returns a new instance of {@link FieldProxy.Builder}.
* @param name the name of the field
* @return the builder object for field proxies
*/
public static Builder builder(String name) {
return new Builder(name);
}
/**
* Indicates whether the given object is a proxy for the same element as this.
* @param obj the object to perform
* @return true if it's equal
*/
@Override
public boolean equals(Object obj) {
return obj instanceof FieldProxy && super.equals(obj);
}
/**
* A builder object for {@link FieldProxy}.
*/
public static class Builder extends AbstractProxy.Builder<FieldProxy> {
/**
* The constructor of the builder, used only internally.
* @param name the name of the field
*/
Builder(String name) {
super(name);
}
/**
* Sets the parent class of this field to the one described by the
* fully qualified name and with the given modifiers.
* @param parentFQN the fully qualified name of the parent
* @param modifiers the modifiers of the parent
* @return the builder's state after the change
*/
public Builder setParent(String parentFQN, int modifiers) {
super.setParent(TypeProxy.from(parentFQN, 0, modifiers));
return this;
}
/**
* Sets the parent class of this field to the one described by the
* fully qualified name.
* @param parentFQN the fully qualified name of the parent
* @return the builder's state after the change
*/
public Builder setParent(String parentFQN) {
return this.setParent(parentFQN, 0);
}
/**
* Builds a {@link FieldProxy} of the given kind.
* @return the built {@link FieldProxy}
*/
@Override
public FieldProxy build() {
return new FieldProxy(this.name, this.descriptor, this.modifiers, this.parent);
}
}
}
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