java/src/main/java/com/jsoniter/ReflectionEnumDecoder.java at master · baowchen/java · GitHub

33 lines (28 loc) · 912 Bytes

package com.jsoniter;

import com.jsoniter.spi.Decoder;

import com.jsoniter.spi.Slice;

import java.io.IOException;

import java.util.HashMap;

import java.util.Map;

class ReflectionEnumDecoder implements Decoder{

private final Map<Slice, Object> enumMap = new HashMap<Slice, Object>();

private Class clazz;

public ReflectionEnumDecoder(Class clazz) {

this.clazz = clazz;

for (Object e : clazz.getEnumConstants()) {

enumMap.put(Slice.make(e.toString()), e);

}

@Override

public Object decode(JsonIterator iter) throws IOException {

if (iter.readNull()) {

return null;

}

Slice slice = IterImpl.readSlice(iter);

Object e = enumMap.get(slice);

if (e == null) {

throw iter.reportError("ReflectionEnumDecoder", slice + " is not valid enum for " + clazz);

}

return e;

}

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