com.facebook.presto.bytecode.AnnotationDefinition Maven / Gradle / Ivy

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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.bytecode;

import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableSet;
import com.google.common.primitives.Primitives;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Type;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import static com.facebook.presto.bytecode.ParameterizedType.type;
import static java.util.Objects.requireNonNull;

public class AnnotationDefinition
{
    private static final Set> ALLOWED_TYPES = ImmutableSet.>builder()
            .addAll(Primitives.allWrapperTypes())
            .add(String.class)
            .add(Class.class)
            .add(ParameterizedType.class)
            .add(AnnotationDefinition.class)
            .add(Enum.class)
            .build();

    private final ParameterizedType type;
    private final Map values = new LinkedHashMap<>();

    public AnnotationDefinition(Class type)
    {
        this.type = type(type);
    }

    public AnnotationDefinition(ParameterizedType type)
    {
        this.type = type;
    }

    public AnnotationDefinition setValue(String name, Byte value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Boolean value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Character value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Short value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Integer value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Long value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Float value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Double value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, String value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Class value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, ParameterizedType value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, AnnotationDefinition value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, Enum value)
    {
        return setValueInternal(name, value);
    }

    public AnnotationDefinition setValue(String name, List value)
    {
        return setValueInternal(name, value);
    }

    private AnnotationDefinition setValueInternal(String name, Object value)
    {
        requireNonNull(name, "name is null");
        requireNonNull(value, "value is null");

        isValidType(value);

        values.put(name, value);
        return this;
    }

    public ParameterizedType getType()
    {
        return type;
    }

    public Map getValues()
    {
        // todo we need an unmodifiable view
        return values;
    }

    private static void isValidType(Object value)
    {
        if (value instanceof List) {
            // todo verify list contains single type
            for (Object v : (List