com.dslplatform.json.ObjectConverter Maven / Gradle / Ivy
package com.dslplatform.json;
import java.io.IOException;
import java.util.*;
public abstract class ObjectConverter {
private static final JsonReader.ReadObject> TypedMapReader = new JsonReader.ReadObject>() {
@Nullable
@Override
public Map read(JsonReader reader) throws IOException {
return reader.wasNull() ? null : deserializeMap(reader);
}
};
@SuppressWarnings("rawtypes")
static final JsonReader.ReadObject MapReader = new JsonReader.ReadObject() {
@Nullable
@Override
public LinkedHashMap read(JsonReader reader) throws IOException {
return reader.wasNull() ? null : deserializeMap(reader);
}
};
public static void serializeNullableMap(@Nullable final Map value, final JsonWriter sw) {
if (value == null) {
sw.writeNull();
} else {
serializeMap(value, sw);
}
}
public static void serializeMap(final Map value, final JsonWriter sw) {
sw.writeByte(JsonWriter.OBJECT_START);
final int size = value.size();
if (size > 0) {
final Iterator> iterator = value.entrySet().iterator();
Map.Entry kv = iterator.next();
sw.writeString(kv.getKey());
sw.writeByte(JsonWriter.SEMI);
sw.serializeObject(kv.getValue());
for (int i = 1; i < size; i++) {
sw.writeByte(JsonWriter.COMMA);
kv = iterator.next();
sw.writeString(kv.getKey());
sw.writeByte(JsonWriter.SEMI);
sw.serializeObject(kv.getValue());
}
}
sw.writeByte(JsonWriter.OBJECT_END);
}
public static void serializeObject(@Nullable final Object value, final JsonWriter sw) throws IOException {
sw.serializeObject(value);
}
@Nullable
public static Object deserializeObject(final JsonReader reader) throws IOException {
switch (reader.last()) {
case 'n':
if (!reader.wasNull()) {
throw reader.newParseErrorAt("Expecting 'null' for null constant", 0);
}
return null;
case 't':
if (!reader.wasTrue()) {
throw reader.newParseErrorAt("Expecting 'true' for true constant", 0);
}
return true;
case 'f':
if (!reader.wasFalse()) {
throw reader.newParseErrorAt("Expecting 'false' for false constant", 0);
}
return false;
case '"':
return reader.readString();
case '{':
return deserializeMap(reader);
case '[':
return deserializeList(reader);
default:
return NumberConverter.deserializeNumber(reader);
}
}
public static ArrayList