gson-compile/gson-compile-processor/src/main/java/io/gitlab/jfronny/gson/compile/processor/adapter/DeclaredAdapter.java

71 lines
3.0 KiB
Java

package io.gitlab.jfronny.gson.compile.processor.adapter;
import com.squareup.javapoet.*;
import io.gitlab.jfronny.gson.compile.processor.*;
import io.gitlab.jfronny.gson.compile.processor.util.valueprocessor.Property;
import javax.lang.model.element.*;
import javax.lang.model.type.DeclaredType;
import javax.tools.Diagnostic;
import java.util.*;
public class DeclaredAdapter extends AdapterAdapter {
private DeclaredType typeAdapterClass;
@Override
public boolean applies() {
return typeAdapterClass != null;
}
@Override
public void hydrate(Property<?> property, TypeSpec.Builder klazz, CodeBlock.Builder code, List<TypeVariableName> typeVariables, Set<SerializableClass> other) {
super.hydrate(property, klazz, code, typeVariables, other);
this.typeAdapterClass = findTypeAdapterClass(property.getAnnotations());
}
@Override
public void dehydrate() {
super.dehydrate();
typeAdapterClass = null;
}
@Override
protected String createAdapter(String typeAdapterName) {
if (TypeHelper.isInstance(typeAdapterClass, Const.TYPE_ADAPTER.toString(), typeUtils)) {
klazz.addField(
FieldSpec.builder(TypeName.get(typeAdapterClass), typeAdapterName)
.addModifiers(Modifier.PRIVATE, Modifier.STATIC, Modifier.FINAL)
.initializer("new $T()", typeAdapterClass)
.build()
);
} else if (TypeHelper.isInstance(typeAdapterClass, Const.TYPE_ADAPTER_FACTORY.toString(), typeUtils)) {
TypeName typeAdapterType = ParameterizedTypeName.get(Const.TYPE_ADAPTER, TypeName.get(type).box());
CodeBlock.Builder block = CodeBlock.builder();
block.add("new $T().create($T.HOLDER.getGson(), ", typeAdapterClass, Const.CCORE);
appendFieldTypeToken(false);
block.add(")");
klazz.addField(
FieldSpec.builder(typeAdapterType, typeAdapterName)
.addModifiers(Modifier.PRIVATE, Modifier.STATIC, Modifier.FINAL)
.initializer(block.build())
.build()
);
} else message.printMessage(Diagnostic.Kind.ERROR, "@JsonAdapter value must by TypeAdapter or TypeAdapterFactory reference.", property.getElement());
return typeAdapterName;
}
private DeclaredType findTypeAdapterClass(List<? extends AnnotationMirror> annotations) {
for (AnnotationMirror annotation : annotations) {
String typeName = annotation.getAnnotationType().toString();
if (typeName.equals(Const.JSON_ADAPTER.toString())) {
Map<? extends ExecutableElement, ? extends AnnotationValue> elements = annotation.getElementValues();
if (!elements.isEmpty()) {
AnnotationValue value = elements.values().iterator().next();
return (DeclaredType) value.getValue();
}
}
}
return null;
}
}