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package com.fasterxml.jackson.databind.ser.std;

import java.io.IOException;
import java.lang.reflect.Type;
import java.util.Map;

import com.fasterxml.jackson.annotation.JsonFormat;

import com.fasterxml.jackson.core.*;

import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.jsonFormatVisitors.JsonFormatVisitorWrapper;
import com.fasterxml.jackson.databind.jsontype.TypeSerializer;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;

/**
 * Container class for serializers used for handling standard JDK-provided
 * types.
 */
@SuppressWarnings("serial")
public class NumberSerializers {
    protected NumberSerializers() { }

    public static void addAll(Map> allDeserializers) {
        allDeserializers.put(Integer.class.getName(), new IntegerSerializer(Integer.class));
        allDeserializers.put(Integer.TYPE.getName(), new IntegerSerializer(Integer.TYPE));
        allDeserializers.put(Long.class.getName(), new LongSerializer(Long.class));
        allDeserializers.put(Long.TYPE.getName(), new LongSerializer(Long.TYPE));

        allDeserializers.put(Byte.class.getName(), IntLikeSerializer.instance);
        allDeserializers.put(Byte.TYPE.getName(), IntLikeSerializer.instance);
        allDeserializers.put(Short.class.getName(), ShortSerializer.instance);
        allDeserializers.put(Short.TYPE.getName(), ShortSerializer.instance);

        // Numbers, limited length floating point
        allDeserializers.put(Double.class.getName(), new DoubleSerializer(Double.class));
        allDeserializers.put(Double.TYPE.getName(), new DoubleSerializer(Double.TYPE));
        allDeserializers.put(Float.class.getName(), FloatSerializer.instance);
        allDeserializers.put(Float.TYPE.getName(), FloatSerializer.instance);
    }

    /*
    /**********************************************************
    /* Shared base class
    /**********************************************************
     */

    protected abstract static class Base extends StdScalarSerializer
            implements ContextualSerializer {
        protected final JsonParser.NumberType _numberType;
        protected final String _schemaType;
        protected final boolean _isInt;

        protected Base(Class cls, JsonParser.NumberType numberType,
                String schemaType) {
            super(cls, false);
            _numberType = numberType;
            _schemaType = schemaType;
            _isInt = (numberType == JsonParser.NumberType.INT)
                    || (numberType == JsonParser.NumberType.LONG)
                    || (numberType == JsonParser.NumberType.BIG_INTEGER);
        }

        @Override
        public JsonNode getSchema(SerializerProvider provider, Type typeHint) {
            return createSchemaNode(_schemaType, true);
        }

        @Override
        public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor,
                JavaType typeHint) throws JsonMappingException
        {
            if (_isInt) {
                visitIntFormat(visitor, typeHint, _numberType);
            } else {
                visitFloatFormat(visitor, typeHint, _numberType);
            }
        }

        @Override
        public JsonSerializer createContextual(SerializerProvider prov,
                BeanProperty property) throws JsonMappingException
        {
            JsonFormat.Value format = findFormatOverrides(prov, property, handledType());
            if (format != null) {
                switch (format.getShape()) {
                case STRING:
                    return ToStringSerializer.instance;
                default:
                }
            }
            return this;
        }
    }

    /*
     *************************************************************
     * Concrete serializers, numerics
     *************************************************************
     */

    @JacksonStdImpl
    public final static class ShortSerializer extends Base {
        final static ShortSerializer instance = new ShortSerializer();

        public ShortSerializer() {
            super(Short.class, JsonParser.NumberType.INT, "number");
        }

        @Override
        public void serialize(Object value, JsonGenerator gen,
                SerializerProvider provider) throws IOException {
            gen.writeNumber(((Short) value).shortValue());
        }
    }

    /**
     * This is the special serializer for regular {@link java.lang.Integer}s
     * (and primitive ints)
     * 

* Since this is one of "native" types, no type information is ever included * on serialization (unlike for most scalar types) *

* NOTE: as of 2.6, generic signature changed to Object, to avoid generation * of bridge methods. */ @JacksonStdImpl public final static class IntegerSerializer extends Base { public IntegerSerializer(Class type) { super(type, JsonParser.NumberType.INT, "integer"); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeNumber(((Integer) value).intValue()); } // IMPORTANT: copied from `NonTypedScalarSerializerBase` @Override public void serializeWithType(Object value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer) throws IOException { // no type info, just regular serialization serialize(value, gen, provider); } } /** * Similar to {@link IntegerSerializer}, but will not cast to Integer: * instead, cast is to {@link java.lang.Number}, and conversion is by * calling {@link java.lang.Number#intValue}. */ @JacksonStdImpl public final static class IntLikeSerializer extends Base { final static IntLikeSerializer instance = new IntLikeSerializer(); public IntLikeSerializer() { super(Number.class, JsonParser.NumberType.INT, "integer"); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeNumber(((Number) value).intValue()); } } @JacksonStdImpl public final static class LongSerializer extends Base { public LongSerializer(Class cls) { super(cls, JsonParser.NumberType.LONG, "number"); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeNumber(((Long) value).longValue()); } } @JacksonStdImpl public final static class FloatSerializer extends Base { final static FloatSerializer instance = new FloatSerializer(); public FloatSerializer() { super(Float.class, JsonParser.NumberType.FLOAT, "number"); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeNumber(((Float) value).floatValue()); } } /** * This is the special serializer for regular {@link java.lang.Double}s (and * primitive doubles) *

* Since this is one of "native" types, no type information is ever included * on serialization (unlike for most scalar types as of 1.5) */ @JacksonStdImpl public final static class DoubleSerializer extends Base { public DoubleSerializer(Class cls) { super(cls, JsonParser.NumberType.DOUBLE, "number"); } @Override public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { gen.writeNumber(((Double) value).doubleValue()); } // IMPORTANT: copied from `NonTypedScalarSerializerBase` @Override public void serializeWithType(Object value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer) throws IOException { // no type info, just regular serialization serialize(value, gen, provider); } } }