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CodegenAccess.java
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191 lines (162 loc) · 6.6 KB
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package com.jsoniter;
import com.jsoniter.spi.Decoder;
import com.jsoniter.spi.JsonException;
import com.jsoniter.spi.JsoniterSpi;
import com.jsoniter.spi.TypeLiteral;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
// only uesd by generated code to access decoder
public class CodegenAccess {
public static void addMissingField(List missingFields, long tracker, long mask, String fieldName) {
if ((tracker & mask) == 0) {
missingFields.add(fieldName);
}
}
public static <T extends Collection> T reuseCollection(T col) {
col.clear();
return col;
}
public static Object existingObject(JsonIterator iter) {
return iter.existingObject;
}
public static Object resetExistingObject(JsonIterator iter) {
Object obj = iter.existingObject;
iter.existingObject = null;
return obj;
}
public static void setExistingObject(JsonIterator iter, Object obj) {
iter.existingObject = obj;
}
public static byte nextToken(JsonIterator iter) throws IOException {
return IterImpl.nextToken(iter);
}
public static final <T> T read(JsonIterator iter, TypeLiteral<T> typeLiteral) throws IOException {
TypeLiteral.NativeType nativeType = typeLiteral.getNativeType();
if (nativeType != null) {
switch (nativeType) {
case FLOAT:
return (T) Float.valueOf(iter.readFloat());
case DOUBLE:
return (T) Double.valueOf(iter.readDouble());
case BOOLEAN:
return (T) Boolean.valueOf(iter.readBoolean());
case BYTE:
return (T) Byte.valueOf((byte) iter.readShort());
case SHORT:
return (T) Short.valueOf(iter.readShort());
case INT:
return (T) Integer.valueOf(iter.readInt());
case CHAR:
return (T) Character.valueOf((char) iter.readInt());
case LONG:
return (T) Long.valueOf(iter.readLong());
case BIG_DECIMAL:
return (T) iter.readBigDecimal();
case BIG_INTEGER:
return (T) iter.readBigInteger();
case STRING:
return (T) iter.readString();
case OBJECT:
return (T) iter.read();
case ANY:
return (T) iter.readAny();
default:
throw new JsonException("unsupported native type: " + nativeType);
}
} else {
return (T) Codegen.getDecoder(typeLiteral.getDecoderCacheKey(), typeLiteral.getType()).decode(iter);
}
}
public static final boolean readBoolean(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.BooleanDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeBoolean(iter);
}
public static final short readShort(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.ShortDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeShort(iter);
}
public static final int readInt(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.IntDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeInt(iter);
}
public static final long readLong(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.LongDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeLong(iter);
}
public static final float readFloat(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.FloatDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeFloat(iter);
}
public static final double readDouble(String cacheKey, JsonIterator iter) throws IOException {
return ((Decoder.DoubleDecoder) JsoniterSpi.getDecoder(cacheKey)).decodeDouble(iter);
}
public static final <T> T read(String cacheKey, JsonIterator iter) throws IOException {
return (T) Codegen.getDecoder(cacheKey, null).decode(iter);
}
public static boolean readArrayStart(JsonIterator iter) throws IOException {
byte c = IterImpl.nextToken(iter);
if (c == '[') {
c = IterImpl.nextToken(iter);
if (c == ']') {
return false;
}
iter.unreadByte();
return true;
}
throw iter.reportError("readArrayStart", "expect [ or n");
}
public static boolean readObjectStart(JsonIterator iter) throws IOException {
byte c = IterImpl.nextToken(iter);
if (c == '{') {
c = IterImpl.nextToken(iter);
if (c == '}') {
return false;
}
iter.unreadByte();
return true;
}
throw iter.reportError("readObjectStart", "expect { or n, found: " + (char) c);
}
public static void reportIncompleteObject(JsonIterator iter) {
throw iter.reportError("genObject", "expect }");
}
public static void reportIncompleteArray(JsonIterator iter) {
throw iter.reportError("genArray", "expect ]");
}
public static final String readObjectFieldAsString(JsonIterator iter) throws IOException {
String field = iter.readString();
if (IterImpl.nextToken(iter) != ':') {
throw iter.reportError("readObjectFieldAsString", "expect :");
}
return field;
}
public static final int readObjectFieldAsHash(JsonIterator iter) throws IOException {
return IterImpl.readObjectFieldAsHash(iter);
}
public static final Slice readObjectFieldAsSlice(JsonIterator iter) throws IOException {
return IterImpl.readObjectFieldAsSlice(iter);
}
public static final Slice readSlice(JsonIterator iter) throws IOException {
return IterImpl.readSlice(iter);
}
final static boolean skipWhitespacesWithoutLoadMore(JsonIterator iter) throws IOException {
for (int i = iter.head; i < iter.tail; i++) {
byte c = iter.buf[i];
switch (c) {
case ' ':
case '\n':
case '\t':
case '\r':
continue;
}
iter.head = i;
return false;
}
return true;
}
public static void staticGenDecoders(TypeLiteral[] typeLiterals) {
Codegen.staticGenDecoders(typeLiterals);
}
public static int head(JsonIterator iter) {
return iter.head;
}
public static void unreadByte(JsonIterator iter) throws IOException {
iter.unreadByte();
}
}