java/src/main/java/com/jsoniter/ReflectionArrayDecoder.java at master · Howeu/java · GitHub

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package com.jsoniter;

import com.jsoniter.spi.Decoder;

import com.jsoniter.spi.JsoniterSpi;

import com.jsoniter.spi.TypeLiteral;

import java.io.IOException;

import java.lang.reflect.Array;

class ReflectionArrayDecoder implements Decoder {

private final Class componentType;

private final Decoder compTypeDecoder;

public ReflectionArrayDecoder(Class clazz) {

componentType = clazz.getComponentType();

compTypeDecoder = Codegen.getDecoder(TypeLiteral.create(componentType).getDecoderCacheKey(), componentType);

}

@Override

public Object decode(JsonIterator iter) throws IOException {

CodegenAccess.resetExistingObject(iter);

if (iter.readNull()) {

return null;

}

if (!CodegenAccess.readArrayStart(iter)) {

return Array.newInstance(componentType, 0);

}

Object a1 = compTypeDecoder.decode(iter);

if (CodegenAccess.nextToken(iter) != ',') {

Object arr = Array.newInstance(componentType, 1);

Array.set(arr, 0, a1);

return arr;

}

Object a2 = compTypeDecoder.decode(iter);

if (CodegenAccess.nextToken(iter) != ',') {

Object arr = Array.newInstance(componentType, 2);

Array.set(arr, 0, a1);

Array.set(arr, 1, a2);

return arr;

}

Object a3 = compTypeDecoder.decode(iter);

if (CodegenAccess.nextToken(iter) != ',') {

Object arr = Array.newInstance(componentType, 3);

Array.set(arr, 0, a1);

Array.set(arr, 1, a2);

Array.set(arr, 2, a3);

return arr;

}

Object a4 = compTypeDecoder.decode(iter);

Object arr = Array.newInstance(componentType, 8);

Array.set(arr, 0, a1);

Array.set(arr, 1, a2);

Array.set(arr, 2, a3);

Array.set(arr, 3, a4);

int i = 4;

int arrLen = 8;

while (CodegenAccess.nextToken(iter) == ',') {

if (i == arrLen) {

Object newArr = Array.newInstance(componentType, 2 * arrLen);

System.arraycopy(arr, 0, newArr, 0, arrLen);

arr = newArr;

arrLen = 2 * arrLen;

}

Array.set(arr, i++, compTypeDecoder.decode(iter));

}

if (i == arrLen) {

return arr;

}

Object newArr = Array.newInstance(componentType, i);

System.arraycopy(arr, 0, newArr, 0, i);

return newArr;

}

java/src/main/java/com/jsoniter/ReflectionArrayDecoder.java at master · Howeu/java · GitHub

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