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651 lines (623 loc) · 29.7 KB
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package com.jsoniter;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.CtNewMethod;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.*;
class Codegen {
final static Map<String, String> NATIVE_READS = new HashMap<String, String>() {{
put("float", "iter.readFloat()");
put("double", "iter.readDouble()");
put("boolean", "iter.readBoolean()");
put("byte", "iter.readShort()");
put("short", "iter.readShort()");
put("int", "iter.readInt()");
put("char", "iter.readInt()");
put("long", "iter.readLong()");
put(Float.class.getName(), "Float.valueOf(iter.readFloat())");
put(Double.class.getName(), "Double.valueOf(iter.readDouble())");
put(Boolean.class.getName(), "Boolean.valueOf(iter.readBoolean())");
put(Byte.class.getName(), "Byte.valueOf((byte)iter.readShort())");
put(Character.class.getName(), "Character.valueOf((char)iter.readShort())");
put(Short.class.getName(), "Short.valueOf(iter.readShort())");
put(Integer.class.getName(), "Integer.valueOf(iter.readInt())");
put(Long.class.getName(), "Long.valueOf(iter.readLong())");
put(BigDecimal.class.getName(), "iter.readBigDecimal()");
put(BigInteger.class.getName(), "iter.readBigInteger()");
put(String.class.getName(), "iter.readString()");
put(Object.class.getName(), "iter.readAnyObject()");
put(Any.class.getName(), "iter.readAny()");
}};
final static Set<Class> WITH_CAPACITY_COLLECTION_CLASSES = new HashSet<Class>() {{
add(ArrayList.class);
add(HashSet.class);
add(Vector.class);
}};
static volatile Map<String, Decoder> cache = new HashMap<String, Decoder>();
static List<Extension> extensions = new ArrayList<Extension>();
static ClassPool pool = ClassPool.getDefault();
static Decoder getDecoder(String cacheKey, Type type, Type... typeArgs) {
Decoder decoder = cache.get(cacheKey);
if (decoder != null) {
return decoder;
}
return gen(cacheKey, type, typeArgs);
}
private synchronized static Decoder gen(String cacheKey, Type type, Type[] typeArgs) {
Decoder decoder = cache.get(cacheKey);
if (decoder != null) {
return decoder;
}
Class clazz;
if (type instanceof ParameterizedType) {
ParameterizedType pType = (ParameterizedType) type;
clazz = (Class) pType.getRawType();
typeArgs = pType.getActualTypeArguments();
} else {
clazz = (Class) type;
}
String source = genSource(cacheKey, clazz, typeArgs);
if ("true".equals(System.getenv("JSONITER_DEBUG"))) {
System.out.println(">>> " + cacheKey);
System.out.println(source);
}
try {
CtClass ctClass = pool.makeClass(cacheKey);
ctClass.setInterfaces(new CtClass[]{pool.get(Decoder.class.getName())});
CtMethod staticMethod = CtNewMethod.make(source, ctClass);
ctClass.addMethod(staticMethod);
CtMethod interfaceMethod = CtNewMethod.make("" +
"public Object decode(com.jsoniter.Jsoniter iter) {" +
"return decode_(iter);" +
"}", ctClass);
ctClass.addMethod(interfaceMethod);
decoder = (Decoder) ctClass.toClass().newInstance();
addNewDecoder(cacheKey, decoder);
return decoder;
} catch (Exception e) {
System.err.println("failed to generate encoder for: " + type + " with " + Arrays.toString(typeArgs));
System.err.println(source);
throw new RuntimeException(e);
}
}
private static String genSource(String cacheKey, Class clazz, Type[] typeArgs) {
if (NATIVE_READS.containsKey(clazz.getName())) {
return genNative(clazz.getName());
}
if (clazz.isArray()) {
return genArray(clazz);
}
if (Map.class.isAssignableFrom(clazz)) {
Type keyType = String.class;
Type valueType = Object.class;
if (typeArgs.length == 0) {
// default to Map<String, Object>
} else if (typeArgs.length == 2) {
keyType = typeArgs[0];
valueType = typeArgs[1];
} else {
throw new IllegalArgumentException(
"can not bind to generic collection without argument types, " +
"try syntax like TypeLiteral<Map<String, String>>{}");
}
if (keyType != String.class) {
throw new IllegalArgumentException("map key must be String");
}
if (clazz == Map.class) {
clazz = HashMap.class;
}
return genMap(clazz, valueType);
}
if (Collection.class.isAssignableFrom(clazz)) {
Type compType = Object.class;
if (typeArgs.length == 0) {
// default to List<Object>
} else if (typeArgs.length == 1) {
compType = typeArgs[0];
} else {
throw new IllegalArgumentException(
"can not bind to generic collection without argument types, " +
"try syntax like TypeLiteral<List<Integer>>{}");
}
if (clazz == List.class) {
clazz = ArrayList.class;
} else if (clazz == Set.class) {
clazz = HashSet.class;
}
if (WITH_CAPACITY_COLLECTION_CLASSES.contains(clazz)) {
return genCollectionWithCapacity(clazz, compType);
} else {
return genCollection(clazz, compType);
}
}
if (clazz.getFields().length == 0) {
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (iter.readNull()) { return null; }");
append(lines, "{{clazz}} obj = {{newInst}};");
append(lines, "iter.skip();");
append(lines, "return obj;");
append(lines, "}");
return lines.toString().replace("{{clazz}}", clazz.getCanonicalName()).replace("{{newInst}}", genNewInstCode(clazz));
}
return genObjectUsingHash(clazz, cacheKey);
}
private static String genMap(Class clazz, Type valueType) {
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "{{clazz}} map = new {{clazz}}();");
append(lines, "for (String field = iter.readObject(); field != null; field = iter.readObject()) {");
append(lines, "map.put(field, {{op}});");
append(lines, "}");
append(lines, "return map;");
append(lines, "}");
return lines.toString().replace("{{clazz}}", clazz.getName()).replace("{{op}}", genReadOp(valueType));
}
private static String genNative(String nativeReadKey) {
if ("boolean".equals(nativeReadKey)) {
nativeReadKey = Boolean.class.getName();
} else if ("byte".equals(nativeReadKey)) {
nativeReadKey = Byte.class.getName();
} else if ("char".equals(nativeReadKey)) {
nativeReadKey = Character.class.getName();
} else if ("short".equals(nativeReadKey)) {
nativeReadKey = Short.class.getName();
} else if ("int".equals(nativeReadKey)) {
nativeReadKey = Integer.class.getName();
} else if ("long".equals(nativeReadKey)) {
nativeReadKey = Long.class.getName();
} else if ("float".equals(nativeReadKey)) {
nativeReadKey = Float.class.getName();
} else if ("double".equals(nativeReadKey)) {
nativeReadKey = Double.class.getName();
}
String op = NATIVE_READS.get(nativeReadKey);
if (op == null) {
throw new RuntimeException("do not know how to read: " + nativeReadKey);
}
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "return " + op + ";");
append(lines, "}");
return lines.toString();
}
public static void addNewDecoder(String cacheKey, Decoder decoder) {
HashMap<String, Decoder> newCache = new HashMap<String, Decoder>(cache);
newCache.put(cacheKey, decoder);
cache = newCache;
}
private static String genObjectUsingHash(Class clazz, String cacheKey) {
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (iter.readNull()) { return null; }");
append(lines, "{{clazz}} obj = {{newInst}};");
append(lines, "if (!com.jsoniter.CodegenAccess.readObjectStart(iter)) { return obj; }");
append(lines, "switch (com.jsoniter.CodegenAccess.readObjectFieldAsHash(iter)) {");
HashSet<Integer> knownHashes = new HashSet<Integer>();
for (Field field : clazz.getFields()) {
long hash = 0x811c9dc5;
for (byte b : field.getName().getBytes()) {
hash ^= b;
hash *= 0x1000193;
}
int intHash = (int) hash;
if (intHash == 0) {
// hash collision, 0 can not be used as sentinel
return genObjectUsingSlice(clazz, cacheKey);
}
if (knownHashes.contains(intHash)) {
// hash collision with other field can not be used as sentinel
return genObjectUsingSlice(clazz, cacheKey);
}
knownHashes.add(intHash);
append(lines, "case " + intHash + ": ");
genField(lines, field, cacheKey);
append(lines, "break;");
}
append(lines, "default:");
append(lines, "iter.skip();");
append(lines, "}");
append(lines, "while (com.jsoniter.CodegenAccess.nextToken(iter) == ',') {");
append(lines, "switch (com.jsoniter.CodegenAccess.readObjectFieldAsHash(iter)) {");
for (Field field : clazz.getFields()) {
long hash = 0x811c9dc5;
for (byte b : field.getName().getBytes()) {
hash ^= b;
hash *= 0x1000193;
}
int intHash = (int) hash;
append(lines, "case " + intHash + ": ");
genField(lines, field, cacheKey);
append(lines, "continue;");
}
append(lines, "}");
append(lines, "iter.skip();");
append(lines, "}");
// append(lines, "if (c != '}') { com.jsoniter.CodegenAccess.reportIncompleteObject(iter); }");
append(lines, "return obj;");
append(lines, "}");
return lines.toString()
.replace("{{clazz}}", clazz.getCanonicalName())
.replace("{{newInst}}", genNewInstCode(clazz));
}
private static String genNewInstCode(Class clazz) {
String newInstanceCode = null;
for (Extension extension : extensions) {
newInstanceCode = extension.codegenNewInstance(clazz);
if (newInstanceCode != null) {
break;
}
}
if (newInstanceCode == null) {
newInstanceCode = "new " + clazz.getCanonicalName() + "()";
}
return newInstanceCode;
}
private static String genObjectUsingSlice(Class clazz, String cacheKey) {
Map<Integer, Object> trieTree = buildTriTree(clazz);
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (iter.readNull()) { return null; }");
append(lines, "{{clazz}} obj = {{newInst}};");
append(lines, "if (!com.jsoniter.CodegenAccess.readObjectStart(iter)) { return obj; }");
append(lines, "com.jsoniter.Slice field = com.jsoniter.CodegenAccess.readObjectFieldAsSlice(iter);");
append(lines, "boolean once = true;");
append(lines, "while (once) {");
append(lines, "once = false;");
append(lines, "switch (field.len) {");
for (Map.Entry<Integer, Object> entry : trieTree.entrySet()) {
Integer len = entry.getKey();
append(lines, "case " + len + ": ");
Map<Byte, Object> current = (Map<Byte, Object>) entry.getValue();
addFieldDispatch(lines, len, 0, current, cacheKey, new ArrayList<Byte>());
append(lines, "break;");
}
append(lines, "}"); // end of switch
append(lines, "iter.skip();");
append(lines, "}"); // end of while
append(lines, "while (com.jsoniter.CodegenAccess.nextToken(iter) == ',') {");
append(lines, "field = com.jsoniter.CodegenAccess.readObjectFieldAsSlice(iter);");
append(lines, "switch (field.len) {");
for (Map.Entry<Integer, Object> entry : trieTree.entrySet()) {
Integer len = entry.getKey();
append(lines, "case " + len + ": ");
Map<Byte, Object> current = (Map<Byte, Object>) entry.getValue();
addFieldDispatch(lines, len, 0, current, cacheKey, new ArrayList<Byte>());
append(lines, "break;");
}
append(lines, "}"); // end of switch
append(lines, "iter.skip();");
append(lines, "}"); // end of while
// append(lines, "if (c != '}') { com.jsoniter.CodegenAccess.reportIncompleteObject(iter); }");
append(lines, "return obj;");
append(lines, "}");
return lines.toString()
.replace("{{clazz}}", clazz.getCanonicalName())
.replace("{{newInst}}", genNewInstCode(clazz));
}
private static Map<Integer, Object> buildTriTree(Class clazz) {
Map<Integer, Object> trieTree = new HashMap<Integer, Object>();
for (Field field : clazz.getFields()) {
String[] alternativeFieldNames = null;
for (Extension extension : extensions) {
alternativeFieldNames = extension.getAlternativeFieldNames(field);
if (alternativeFieldNames != null) {
break;
}
}
if (alternativeFieldNames == null) {
alternativeFieldNames = new String[]{field.getName()};
}
for (String alternativeFieldName : alternativeFieldNames) {
byte[] fieldName = alternativeFieldName.getBytes();
Map<Byte, Object> current = (Map<Byte, Object>) trieTree.get(fieldName.length);
if (current == null) {
current = new HashMap<Byte, Object>();
trieTree.put(fieldName.length, current);
}
for (int i = 0; i < fieldName.length - 1; i++) {
byte b = fieldName[i];
Map<Byte, Object> next = (Map<Byte, Object>) current.get(b);
if (next == null) {
next = new HashMap<Byte, Object>();
current.put(b, next);
}
current = next;
}
current.put(fieldName[fieldName.length - 1], field);
}
}
return trieTree;
}
private static Decoder createFieldDecoder(String fieldCacheKey, Field field) {
for (Extension extension : extensions) {
Decoder decoder = extension.createDecoder(field);
if (decoder != null) {
addNewDecoder(fieldCacheKey, decoder);
break;
}
}
// the decoder can be just created by the factory
// or it can be registered directly
return cache.get(fieldCacheKey);
}
private static void addFieldDispatch(StringBuilder lines, int len, int i, Map<Byte, Object> current, String cacheKey, List<Byte> bytesToCompare) {
for (Map.Entry<Byte, Object> entry : current.entrySet()) {
Byte b = entry.getKey();
if (i == len - 1) {
append(lines, "if (");
for (int j = 0; j < bytesToCompare.size(); j++) {
Byte a = bytesToCompare.get(j);
append(lines, String.format("field.at(%d)==%s && ", i - bytesToCompare.size() + j, a));
}
append(lines, String.format("field.at(%d)==%s", i, b));
append(lines, ") {");
genField(lines, (Field) entry.getValue(), cacheKey);
append(lines, "continue;");
append(lines, "}");
continue;
}
Map<Byte, Object> next = (Map<Byte, Object>) entry.getValue();
if (next.size() == 1) {
ArrayList<Byte> nextBytesToCompare = new ArrayList<Byte>(bytesToCompare);
nextBytesToCompare.add(b);
addFieldDispatch(lines, len, i + 1, next, cacheKey, nextBytesToCompare);
continue;
}
append(lines, "if (");
for (int j = 0; j < bytesToCompare.size(); j++) {
Byte a = bytesToCompare.get(j);
append(lines, String.format("field.at(%d)==%s && ", i - bytesToCompare.size() + j, a));
}
append(lines, String.format("field.at(%d)==%s", i, b));
append(lines, ") {");
addFieldDispatch(lines, len, i + 1, next, cacheKey, new ArrayList<Byte>());
append(lines, "continue;");
append(lines, "}");
}
}
private static void genField(StringBuilder lines, Field field, String cacheKey) {
Class<?> fieldType = field.getType();
String fieldTypeName = fieldType.getCanonicalName();
String fieldCacheKey = field.getName() + "@" + cacheKey;
Decoder decoder = createFieldDecoder(fieldCacheKey, field);
if (decoder != null) {
if (fieldType == boolean.class) {
if (!(decoder instanceof Decoder.BooleanDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.BooleanDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readBoolean(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == byte.class) {
if (!(decoder instanceof Decoder.ShortDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.ShortDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readShort(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == short.class) {
if (!(decoder instanceof Decoder.ShortDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.ShortDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readShort(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == char.class) {
if (!(decoder instanceof Decoder.IntDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.IntDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readInt(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == int.class) {
if (!(decoder instanceof Decoder.IntDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.IntDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readInt(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == long.class) {
if (!(decoder instanceof Decoder.LongDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.LongDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readLong(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == float.class) {
if (!(decoder instanceof Decoder.FloatDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.FloatDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readFloat(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
if (fieldType == double.class) {
if (!(decoder instanceof Decoder.DoubleDecoder)) {
throw new RuntimeException("decoder for field " + field + "must implement Decoder.DoubleDecoder");
}
append(lines, String.format("obj.%s = com.jsoniter.CodegenAccess.readDouble(\"%s\", iter);", field.getName(), fieldCacheKey));
return;
}
getDecoder(fieldCacheKey, fieldType); // put decoder into cache
append(lines, String.format("obj.%s = (%s)com.jsoniter.CodegenAccess.read(\"%s\", iter);",
field.getName(), fieldTypeName, fieldCacheKey));
return;
}
append(lines, String.format("obj.%s = (%s)%s;", field.getName(), fieldTypeName, genReadOp(field.getGenericType())));
}
private static String genReadOp(Type type) {
if (type instanceof Class) {
Class clazz = (Class) type;
String nativeRead = NATIVE_READS.get(clazz.getCanonicalName());
if (nativeRead != null) {
return nativeRead;
}
}
String cacheKey = TypeLiteral.generateCacheKey(type);
getDecoder(cacheKey, type); // set the decoder to cache
return String.format("%s.decode_(iter)", cacheKey);
}
private static String genArray(Class clazz) {
Class compType = clazz.getComponentType();
if (compType.isArray()) {
throw new IllegalArgumentException("nested array not supported: " + clazz.getCanonicalName());
}
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (iter.readNull()) { return null; }");
append(lines, "if (!com.jsoniter.CodegenAccess.readArrayStart(iter)) {");
append(lines, "return new {{comp}}[0];");
append(lines, "}");
append(lines, "{{comp}} a1 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "return new {{comp}}[]{ a1 };");
append(lines, "}");
append(lines, "{{comp}} a2 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "return new {{comp}}[]{ a1, a2 };");
append(lines, "}");
append(lines, "{{comp}} a3 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "return new {{comp}}[]{ a1, a2, a3 };");
append(lines, "}");
append(lines, "{{comp}} a4 = ({{comp}}) {{op}};");
append(lines, "{{comp}}[] arr = new {{comp}}[8];");
append(lines, "arr[0] = a1;");
append(lines, "arr[1] = a2;");
append(lines, "arr[2] = a3;");
append(lines, "arr[3] = a4;");
append(lines, "int i = 4;");
append(lines, "while (com.jsoniter.CodegenAccess.nextToken(iter) == ',') {");
append(lines, "if (i == arr.length) {");
append(lines, "{{comp}}[] newArr = new {{comp}}[arr.length * 2];");
append(lines, "System.arraycopy(arr, 0, newArr, 0, arr.length);");
append(lines, "arr = newArr;");
append(lines, "}");
append(lines, "arr[i++] = {{op}};");
append(lines, "}");
// append(lines, "if (c != ']') { com.jsoniter.CodegenAccess.reportIncompleteArray(iter); }");
append(lines, "{{comp}}[] result = new {{comp}}[i];");
append(lines, "System.arraycopy(arr, 0, result, 0, i);");
append(lines, "return result;");
append(lines, "}");
return lines.toString().replace(
"{{comp}}", compType.getCanonicalName()).replace(
"{{op}}", genReadOp(compType));
}
private static String genCollectionWithCapacity(Class clazz, Type compType) {
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (!com.jsoniter.CodegenAccess.readArrayStart(iter)) {");
append(lines, "return new {{clazz}}(0);");
append(lines, "}");
append(lines, "Object a1 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}(1);");
append(lines, "obj.add(a1);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a2 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}(2);");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a3 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}(3);");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "obj.add(a3);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a4 = {{op}};");
append(lines, "{{clazz}} obj = new {{clazz}}(110);");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "obj.add(a3);");
append(lines, "obj.add(a4);");
append(lines, "while (com.jsoniter.CodegenAccess.nextToken(iter) == ',') {");
append(lines, "obj.add({{op}});");
append(lines, "}");
// append(lines, "if (c != ']') { com.jsoniter.CodegenAccess.reportIncompleteArray(iter); }");
append(lines, "return obj;");
append(lines, "}");
return lines.toString().replace(
"{{clazz}}", clazz.getName()).replace(
"{{op}}", genReadOp(compType));
}
private static String genCollection(Class clazz, Type compType) {
StringBuilder lines = new StringBuilder();
append(lines, "public static Object decode_(com.jsoniter.Jsoniter iter) {");
append(lines, "if (!com.jsoniter.CodegenAccess.readArrayStart(iter)) {");
append(lines, "return new {{clazz}}();");
append(lines, "}");
append(lines, "Object a1 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}();");
append(lines, "obj.add(a1);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a2 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}();");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a3 = {{op}};");
append(lines, "if (com.jsoniter.CodegenAccess.nextToken(iter) != ',') {");
append(lines, "{{clazz}} obj = new {{clazz}}();");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "obj.add(a3);");
append(lines, "return obj;");
append(lines, "}");
append(lines, "Object a4 = {{op}};");
append(lines, "{{clazz}} obj = new {{clazz}}();");
append(lines, "obj.add(a1);");
append(lines, "obj.add(a2);");
append(lines, "obj.add(a3);");
append(lines, "obj.add(a4);");
append(lines, "while (com.jsoniter.CodegenAccess.nextToken(iter) == ',') {");
append(lines, "obj.add({{op}});");
append(lines, "}");
// append(lines, "if (c != ']') { com.jsoniter.CodegenAccess.reportIncompleteArray(iter); }");
append(lines, "return obj;");
append(lines, "}");
return lines.toString().replace(
"{{clazz}}", clazz.getName()).replace(
"{{op}}", genReadOp(compType));
}
private static void append(StringBuilder lines, String str) {
lines.append(str);
lines.append("\n");
}
public static void registerExtension(Extension extension) {
extensions.add(extension);
}
public static Decoder.IntDecoder getIntDecoder(String cacheKey) {
return (Decoder.IntDecoder) cache.get(cacheKey);
}
public static Decoder.BooleanDecoder getBooleanDecoder(String cacheKey) {
return (Decoder.BooleanDecoder) cache.get(cacheKey);
}
public static Decoder.ShortDecoder getShortDecoder(String cacheKey) {
return (Decoder.ShortDecoder) cache.get(cacheKey);
}
public static Decoder.LongDecoder getLongDecoder(String cacheKey) {
return (Decoder.LongDecoder) cache.get(cacheKey);
}
public static Decoder.FloatDecoder getFloatDecoder(String cacheKey) {
return (Decoder.FloatDecoder) cache.get(cacheKey);
}
public static Decoder.DoubleDecoder getDoubleDecoder(String cacheKey) {
return (Decoder.DoubleDecoder) cache.get(cacheKey);
}
}
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