Java JGenericType类代码示例

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
public JGenericTypeVisitor visitGenericType(JGenericType type) {
	// TODO Auto-generated method stub
	return null;
}
 

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
/**
 * <p>replaceType</p>
 *
 * @param logger a {@link com.google.gwt.core.ext.TreeLogger} object.
 * @param type a {@link com.google.gwt.core.ext.typeinfo.JType} object.
 * @param deserializeAs a {@link java.lang.annotation.Annotation} object.
 * @return a {@link com.google.gwt.core.ext.typeinfo.JType} object.
 * @throws com.google.gwt.core.ext.UnableToCompleteException if any.
 */
public JType replaceType( TreeLogger logger, JType type, Annotation deserializeAs ) throws UnableToCompleteException {
    JClassType classType = type.isClassOrInterface();
    if ( null == classType ) {
        return type;
    }

    Optional<JClassType> typeAs = getClassFromJsonDeserializeAnnotation( logger, deserializeAs, "as" );
    Optional<JClassType> keyAs = getClassFromJsonDeserializeAnnotation( logger, deserializeAs, "keyAs" );
    Optional<JClassType> contentAs = getClassFromJsonDeserializeAnnotation( logger, deserializeAs, "contentAs" );

    if ( !typeAs.isPresent() && !keyAs.isPresent() && !contentAs.isPresent() ) {
        return type;
    }

    JArrayType arrayType = type.isArray();
    if ( null != arrayType ) {
        if ( contentAs.isPresent() ) {
            return typeOracle.getArrayType( contentAs.get() );
        } else if ( typeAs.isPresent() ) {
            return typeOracle.getArrayType( typeAs.get() );
        } else {
            return classType;
        }
    }

    JParameterizedType parameterizedType = type.isParameterized();
    if ( null != parameterizedType ) {
        JGenericType genericType;
        if ( typeAs.isPresent() ) {
            genericType = typeAs.get().isGenericType();
        } else {
            genericType = parameterizedType.getBaseType();
        }

        if ( !keyAs.isPresent() && !contentAs.isPresent() ) {
            return typeOracle.getParameterizedType( genericType, parameterizedType.getTypeArgs() );
        } else if ( contentAs.isPresent() && isIterable( parameterizedType ) ) {
            return typeOracle.getParameterizedType( genericType, new JClassType[]{contentAs.get()} );
        } else if ( isMap( parameterizedType ) ) {
            JClassType key;
            if ( keyAs.isPresent() ) {
                key = keyAs.get();
            } else {
                key = parameterizedType.getTypeArgs()[0];
            }

            JClassType content;
            if ( contentAs.isPresent() ) {
                content = contentAs.get();
            } else {
                content = parameterizedType.getTypeArgs()[1];
            }

            return typeOracle.getParameterizedType( genericType, new JClassType[]{key, content} );
        }
    }

    if ( typeAs.isPresent() ) {
        return typeAs.get();
    }

    return type;
}
 

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
private ParameterizedTypeName genericName( JGenericType type ) {
    return ParameterizedTypeName.get( className( type ), typeName( true, type.getTypeParameters() ) );
}
 

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
@Override
public String generate(TreeLogger logger, GeneratorContext context,
    String typeName) throws UnableToCompleteException {
    logger.log(Type.INFO, "Generating codec for " + typeName);

    JClassType type = null;
    JClassType jsonCodec = null;

    try {
        type = context.getTypeOracle().getType(typeName);
        jsonCodec = context.getTypeOracle()
                           .getType(JSONCodec.class.getCanonicalName());
        this.collectionType = context.getTypeOracle()
                                     .getType(Collection.class.getCanonicalName());
        this.listType = context.getTypeOracle()
                               .getType(List.class.getCanonicalName());
        this.setType = context.getTypeOracle()
                              .getType(Set.class.getCanonicalName());
        this.numberType = context.getTypeOracle()
                                 .getType(Number.class.getCanonicalName());
    } catch (NotFoundException ex) {
        logger.log(TreeLogger.ERROR, typeName, ex);

        return null;
    }

    if (type.isClass() != null) { //Don't regenerate from Impls.

        return type.getQualifiedSourceName();
    }

    JClassType subtype = type.asParameterizationOf((JGenericType) jsonCodec)
                             .getTypeArgs()[0];
    this.types = this.getIntrospectableTypes(logger, context.getTypeOracle());

    BeanResolver thisType = findType(subtype);

    if (thisType == null) {
        logger.log(Type.ERROR,
            "Unable to find introspectable type " + subtype);
        throw new UnableToCompleteException();
    }

    this.writeClassSerializer(logger, context, thisType);

    this.writeTopSerializer(logger, context, type, subtype);

    return type.getQualifiedSourceName() + "_Impl";
}
 

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
private void write_doBindEventHandlers(JClassType target, TypeOracle typeOracle, SourceWriter writer, TreeLogger logger) {
    writer.println("protected List<HandlerRegistration> doBindEventHandlers(final %s target, IsWidget isWidget) {", target.getQualifiedSourceName());
    writer.indent();
    writer.println("List<HandlerRegistration> registrations = new LinkedList<HandlerRegistration>();");

    for (JMethod method : target.getMethods()) {
        DomEventHandler annotation = method.getAnnotation(DomEventHandler.class);
        if (annotation != null) {
            if (method.getParameters().length != 1)
                break;

            JType paramJType = method.getParameters()[0].getType();
            String paramTypeQualifiedSourceName = paramJType.getQualifiedSourceName();

            JClassType paramJClassType = typeOracle.findType(paramTypeQualifiedSourceName);

            if (!paramJClassType.isAssignableTo(typeOracle.findType(DomEvent.class.getCanonicalName())))
                break;

            JGenericType domEventJGenericType = typeOracle.findType(DomEvent.class.getCanonicalName()).isGenericType();
            JParameterizedType paramJParameterizedType = paramJClassType.asParameterizationOf(domEventJGenericType);

            JClassType handlerJClassType = paramJParameterizedType.getTypeArgs()[0];

            writer.println("registrations.add(isWidget.asWidget().addDomHandler(new " + paramJParameterizedType.getTypeArgs()[0].getParameterizedQualifiedSourceName() + "() {");
            writer.indent();
            writer.println(handlerJClassType.getOverridableMethods()[0].getReadableDeclaration(false, false, false, false, true) + " {");
            writer.indent();
            if (annotation.value().length > 0) {
                writer.println("Element targetElement = Element.as(event.getNativeEvent().getEventTarget());");
                if (annotation.value()[0].startsWith("!")) {
                    writer.println("if (targetElement != target." + annotation.value()[0].substring(1) + ") {");
                } else {
                    writer.println("if (targetElement == target." + annotation.value()[0] + ") {");
                }
                writer.indent();
                writer.println("target." + method.getName() + "(event);");
                writer.outdent();
                writer.println("}");
            } else {
                writer.println("target." + method.getName() + "(event);");
            }
            writer.outdent();
            writer.println("}");
            writer.outdent();
            writer.println("}, " + paramTypeQualifiedSourceName + ".getType()));");
        }
    }

    writer.println("return registrations;");
    writer.outdent();
    writer.println("}");
}
 

import com.google.gwt.core.ext.typeinfo.JGenericType; //导入依赖的package包/类
JGenericTypeVisitor visitGenericType(JGenericType type);