package com.alibaba.fastjson.parser.deserializer;
import static com.alibaba.fastjson.util.ASMUtils.getDesc;
import static com.alibaba.fastjson.util.ASMUtils.getType;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.TreeSet;
import java.util.concurrent.atomic.AtomicLong;
import com.alibaba.fastjson.asm.ASMException;
import com.alibaba.fastjson.asm.ClassWriter;
import com.alibaba.fastjson.asm.FieldVisitor;
import com.alibaba.fastjson.asm.Label;
import com.alibaba.fastjson.asm.MethodVisitor;
import com.alibaba.fastjson.asm.Opcodes;
import com.alibaba.fastjson.parser.DefaultJSONParser;
import com.alibaba.fastjson.parser.DefaultJSONParser.ResolveTask;
import com.alibaba.fastjson.parser.Feature;
import com.alibaba.fastjson.parser.JSONLexer;
import com.alibaba.fastjson.parser.JSONToken;
import com.alibaba.fastjson.parser.ParseContext;
import com.alibaba.fastjson.parser.ParserConfig;
import com.alibaba.fastjson.parser.SymbolTable;
import com.alibaba.fastjson.parser.deserializer.ASMJavaBeanDeserializer.InnerJavaBeanDeserializer;
import com.alibaba.fastjson.util.ASMClassLoader;
import com.alibaba.fastjson.util.ASMUtils;
import com.alibaba.fastjson.util.DeserializeBeanInfo;
import com.alibaba.fastjson.util.FieldInfo;
public class ASMDeserializerFactory implements Opcodes {
private static final ASMDeserializerFactory instance = new ASMDeserializerFactory();
private ASMClassLoader classLoader = new ASMClassLoader();
private final AtomicLong seed = new AtomicLong();
public String getGenClassName(Class<?> clazz) {
return "Fastjson_ASM_" + clazz.getSimpleName() + "_" + seed.incrementAndGet();
}
public String getGenFieldDeserializer(Class<?> clazz, FieldInfo fieldInfo) {
String name = "Fastjson_ASM__Field_" + clazz.getSimpleName();
name += "_" + fieldInfo.getName() + "_" + seed.incrementAndGet();
return name;
}
public ASMDeserializerFactory(){
}
public final static ASMDeserializerFactory getInstance() {
return instance;
}
public boolean isExternalClass(Class<?> clazz) {
return classLoader.isExternalClass(clazz);
}
public ObjectDeserializer createJavaBeanDeserializer(ParserConfig config, Class<?> clazz, Type type)
throws Exception {
if (clazz.isPrimitive()) {
throw new IllegalArgumentException("not support type :" + clazz.getName());
}
String className = getGenClassName(clazz);
ClassWriter cw = new ClassWriter();
cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, getType(ASMJavaBeanDeserializer.class), null);
DeserializeBeanInfo beanInfo = DeserializeBeanInfo.computeSetters(clazz, type);
_init(cw, new Context(className, config, beanInfo, 3));
_createInstance(cw, new Context(className, config, beanInfo, 3));
_deserialze(cw, new Context(className, config, beanInfo, 4));
byte[] code = cw.toByteArray();
// org.apache.commons.io.IOUtils.write(code, new java.io.FileOutputStream(
// "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
// + className + ".class"));
Class<?> exampleClass = classLoader.defineClassPublic(className, code, 0, code.length);
Constructor<?> constructor = exampleClass.getConstructor(ParserConfig.class, Class.class);
Object instance = constructor.newInstance(config, clazz);
return (ObjectDeserializer) instance;
}
void _setFlag(MethodVisitor mw, Context context, int i) {
String varName = "_asm_flag_" + (i / 32);
mw.visitVarInsn(ILOAD, context.var(varName));
mw.visitLdcInsn(1 << i);
mw.visitInsn(IOR);
mw.visitVarInsn(ISTORE, context.var(varName));
}
void _isFlag(MethodVisitor mw, Context context, int i, Label label) {
mw.visitVarInsn(ILOAD, context.var("_asm_flag_" + (i / 32)));
mw.visitLdcInsn(1 << i);
mw.visitInsn(IAND);
mw.visitJumpInsn(IFEQ, label);
}
void _deserialze(ClassWriter cw, Context context) {
if (context.getFieldInfoList().size() == 0) {
return;
}
for (FieldInfo fieldInfo : context.getFieldInfoList()) {
Class<?> fieldClass = fieldInfo.getFieldClass();
Type fieldType = fieldInfo.getFieldType();
if (fieldClass == char.class) {
return;
}
if (Collection.class.isAssignableFrom(fieldClass)) {
if (fieldType instanceof ParameterizedType) {
Type itemType = ((ParameterizedType) fieldType).getActualTypeArguments()[0];
if (itemType instanceof Class) {
continue;
} else {
return;
}
} else {
return;
}
}
}
Collections.sort(context.getFieldInfoList());
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "deserialze", "(" + getDesc(DefaultJSONParser.class)
+ getDesc(Type.class)
+ "Ljava/lang/Object;)Ljava/lang/Object;", null,
null);
Label reset_ = new Label();
Label super_ = new Label();
Label return_ = new Label();
Label end_ = new Label();
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getLexer", "()" + getDesc(JSONLexer.class));
mw.visitVarInsn(ASTORE, context.var("lexer"));
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETSTATIC, getType(Feature.class), "SortFeidFastMatch", "L" + getType(Feature.class) + ";");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "isEnabled", "(" + "L" + getType(Feature.class)
+ ";" + ")Z");
mw.visitJumpInsn(IFEQ, super_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(context.getClazz().getName());
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanType", "(Ljava/lang/String;)I");
mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "NOT_MATCH", "I");
mw.visitJumpInsn(IF_ICMPEQ, super_);
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
"()Lcom/alibaba/fastjson/parser/ParseContext;");
mw.visitVarInsn(ASTORE, context.var("mark_context"));
// ParseContext context = parser.getContext();
mw.visitInsn(ICONST_0);
mw.visitVarInsn(ISTORE, context.var("matchedCount"));
Constructor<?> defaultConstructor = context.getBeanInfo().getDefaultConstructor();
// create instance
if (Modifier.isPublic(defaultConstructor.getModifiers())) {
mw.visitTypeInsn(NEW, getType(context.getClazz()));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(context.getClazz()), "<init>", "()V");
mw.visitVarInsn(ASTORE, context.var("instance"));
} else {
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKESPECIAL, getType(ASMJavaBeanDeserializer.class), "createInstance",
"(" + getDesc(DefaultJSONParser.class) + ")Ljava/lang/Object;");
mw.visitTypeInsn(CHECKCAST, getType(context.getClazz())); // cast
mw.visitVarInsn(ASTORE, context.var("instance"));
}
{
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
"()" + ASMUtils.getDesc(ParseContext.class));
mw.visitVarInsn(ASTORE, context.var("context"));
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitVarInsn(ALOAD, context.var("context"));
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ALOAD, 3); // fieldName
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
"(" + ASMUtils.getDesc(ParseContext.class) + "Ljava/lang/Object;Ljava/lang/Object;)"
+ ASMUtils.getDesc(ParseContext.class));
mw.visitVarInsn(ASTORE, context.var("childContext"));
}
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "END", "I");
mw.visitJumpInsn(IF_ICMPEQ, return_);
mw.visitInsn(ICONST_0); // UNKOWN
mw.visitIntInsn(ISTORE, context.var("matchStat"));
int fieldListSize = context.getFieldInfoList().size();
for (int i = 0; i < fieldListSize; i += 32) {
mw.visitInsn(ICONST_0);
mw.visitVarInsn(ISTORE, context.var("_asm_flag_" + (i / 32)));
}
// declare and init
for (int i = 0; i < fieldListSize; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
Class<?> fieldClass = fieldInfo.getFieldClass();
if (fieldClass == boolean.class //
|| fieldClass == byte.class //
|| fieldClass == short.class //
|| fieldClass == int.class) {
mw.visitInsn(ICONST_0);
mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == long.class) {
mw.visitInsn(LCONST_0);
mw.visitVarInsn(LSTORE, context.var(fieldInfo.getName() + "_asm", 2));
} else if (fieldClass == float.class) {
mw.visitInsn(FCONST_0);
mw.visitVarInsn(FSTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == double.class) {
mw.visitInsn(DCONST_0);
mw.visitVarInsn(DSTORE, context.var(fieldInfo.getName() + "_asm", 2));
} else {
if (fieldClass == String.class) {
Label flagEnd_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETSTATIC, getType(Feature.class), "InitStringFieldAsEmpty",
"L" + getType(Feature.class) + ";");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "isEnabled", "(" + "L"
+ getType(Feature.class)
+ ";" + ")Z");
mw.visitJumpInsn(IFEQ, flagEnd_);
_setFlag(mw, context, i);
mw.visitLabel(flagEnd_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "stringDefaultValue",
"()Ljava/lang/String;");
} else {
mw.visitInsn(ACONST_NULL);
}
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
}
}
for (int i = 0; i < fieldListSize; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
Class<?> fieldClass = fieldInfo.getFieldClass();
Type fieldType = fieldInfo.getFieldType();
Label notMatch_ = new Label();
if (fieldClass == boolean.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldBoolean", "([C)Z");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == byte.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == short.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == int.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == long.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldLong", "([C)J");
mw.visitVarInsn(LSTORE, context.var(fieldInfo.getName() + "_asm", 2));
} else if (fieldClass == float.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldFloat", "([C)F");
mw.visitVarInsn(FSTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass == double.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldDouble", "([C)D");
mw.visitVarInsn(DSTORE, context.var(fieldInfo.getName() + "_asm", 2));
} else if (fieldClass == String.class) {
Label notEnd_ = new Label();
mw.visitIntInsn(ILOAD, context.var("matchStat"));
mw.visitInsn(ICONST_4); // END
mw.visitJumpInsn(IF_ICMPNE, notEnd_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "stringDefaultValue",
"()Ljava/lang/String;");
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitJumpInsn(GOTO, notMatch_);
mw.visitLabel(notEnd_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldString", "([C)Ljava/lang/String;");
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
} else if (fieldClass.isEnum()) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
Label enumNull_ = new Label();
mw.visitInsn(ACONST_NULL);
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getSymbolTable",
"()" + getDesc(SymbolTable.class));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldSymbol",
"([C" + getDesc(SymbolTable.class) + ")Ljava/lang/String;");
mw.visitInsn(DUP);
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm_enumName"));
mw.visitJumpInsn(IFNULL, enumNull_);
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm_enumName"));
mw.visitMethodInsn(INVOKESTATIC, getType(fieldClass), "valueOf", "(Ljava/lang/String;)"
+ getDesc(fieldClass));
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitLabel(enumNull_);
} else if (Collection.class.isAssignableFrom(fieldClass)) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
Type actualTypeArgument = ((ParameterizedType) fieldType).getActualTypeArguments()[0];
if (actualTypeArgument instanceof Class) {
Class<?> itemClass = (Class<?>) actualTypeArgument;
if (!Modifier.isPublic(itemClass.getModifiers())) {
throw new ASMException("can not create ASMParser");
}
if (itemClass == String.class) {
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldClass))); // cast
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldStringArray",
"([CLjava/lang/Class;)" + getDesc(Collection.class));
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
} else {
_deserialze_list_obj(context, mw, reset_, fieldInfo, fieldClass, itemClass, i);
if (i == fieldListSize - 1) {
_deserialize_endCheck(context, mw, reset_);
}
continue;
}
} else {
throw new ASMException("can not create ASMParser");
}
} else {
_deserialze_obj(context, mw, reset_, fieldInfo, fieldClass, i);
if (i == fieldListSize - 1) {
_deserialize_endCheck(context, mw, reset_);
}
continue;
}
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
Label flag_ = new Label();
// mw.visitInsn(DUP);
mw.visitJumpInsn(IFLE, flag_);
_setFlag(mw, context, i);
mw.visitLabel(flag_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
mw.visitInsn(DUP);
mw.visitVarInsn(ISTORE, context.var("matchStat"));
mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "NOT_MATCH", "I");
mw.visitJumpInsn(IF_ICMPEQ, reset_);
// mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
// mw.visitVarInsn(ALOAD, context.var("lexer"));
// mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
mw.visitJumpInsn(IFLE, notMatch_);
// increment matchedCount
mw.visitVarInsn(ILOAD, context.var("matchedCount"));
mw.visitInsn(ICONST_1);
mw.visitInsn(IADD);
mw.visitVarInsn(ISTORE, context.var("matchedCount"));
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "END", "I");
mw.visitJumpInsn(IF_ICMPEQ, end_);
// mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
// mw.visitVarInsn(ILOAD, context.var("matchedCount"));
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");
mw.visitLabel(notMatch_);
if (i == fieldListSize - 1) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "END", "I");
mw.visitJumpInsn(IF_ICMPNE, reset_);
}
} // endFor
mw.visitLabel(end_);
if (!context.getClazz().isInterface() && !Modifier.isAbstract(context.getClazz().getModifiers())) {
_batchSet(context, mw);
}
mw.visitLabel(return_);
_setContext(context, mw);
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitInsn(ARETURN);
mw.visitLabel(reset_);
_batchSet(context, mw);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ALOAD, 2);
mw.visitVarInsn(ALOAD, 3);
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ASMJavaBeanDeserializer.class), "parseRest",
"(" + getDesc(DefaultJSONParser.class) + getDesc(Type.class)
+ "Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
mw.visitTypeInsn(CHECKCAST, getType(context.getClazz())); // cast
mw.visitInsn(ARETURN);
mw.visitLabel(super_);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ALOAD, 2);
mw.visitVarInsn(ALOAD, 3);
mw.visitMethodInsn(INVOKESPECIAL, getType(ASMJavaBeanDeserializer.class), "deserialze",
"(" + getDesc(DefaultJSONParser.class) + getDesc(Type.class)
+ "Ljava/lang/Object;)Ljava/lang/Object;");
mw.visitInsn(ARETURN);
mw.visitMaxs(5, context.getVariantCount());
mw.visitEnd();
}
private void _batchSet(Context context, MethodVisitor mw) {
for (int i = 0, size = context.getFieldInfoList().size(); i < size; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
Class<?> fieldClass = fieldInfo.getFieldClass();
Type fieldType = fieldInfo.getFieldType();
Label notSet_ = new Label();
_isFlag(mw, context, i, notSet_);
if (fieldClass == boolean.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ILOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == byte.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ILOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == short.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ILOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == int.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ILOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == long.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(LLOAD, context.var(fieldInfo.getName() + "_asm", 2));
if (fieldInfo.getMethod() != null) {
mw.visitMethodInsn(INVOKEVIRTUAL, getType(context.getClazz()), fieldInfo.getMethod().getName(),
"(J)V");
} else {
mw.visitFieldInsn(PUTFIELD, getType(fieldInfo.getDeclaringClass()), fieldInfo.getField().getName(),
getDesc(fieldInfo.getFieldClass()));
}
} else if (fieldClass == float.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(FLOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == double.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(DLOAD, context.var(fieldInfo.getName() + "_asm", 2));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass == String.class) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (fieldClass.isEnum()) {
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
} else if (Collection.class.isAssignableFrom(fieldClass)) {
mw.visitVarInsn(ALOAD, context.var("instance"));
Type itemType = ((ParameterizedType) fieldType).getActualTypeArguments()[0];
if (itemType == String.class) {
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
} else {
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
}
_batchSetInvoke(context, mw, fieldInfo);
} else {
// mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
// mw.visitIntInsn(ILOAD, context.var(fieldInfo.getName() + "_asm_flag"));
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");
// _isFlag(mw, context, i, notSet_);
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
_batchSetInvoke(context, mw, fieldInfo);
}
mw.visitLabel(notSet_);
}
}
private void _batchSetInvoke(Context context, MethodVisitor mw, FieldInfo fieldInfo) {
if (fieldInfo.getMethod() != null) {
mw.visitMethodInsn(INVOKEVIRTUAL, getType(fieldInfo.getDeclaringClass()), fieldInfo.getMethod().getName(),
getDesc(fieldInfo.getMethod()));
if (!fieldInfo.getMethod().getReturnType().equals(Void.TYPE)) {
mw.visitInsn(POP);
}
} else {
mw.visitFieldInsn(PUTFIELD, getType(fieldInfo.getDeclaringClass()), fieldInfo.getField().getName(),
getDesc(fieldInfo.getFieldClass()));
}
}
private void _setContext(Context context, MethodVisitor mw) {
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitVarInsn(ALOAD, context.var("context"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
"(" + ASMUtils.getDesc(ParseContext.class) + ")V");
Label endIf_ = new Label();
mw.visitVarInsn(ALOAD, context.var("childContext"));
mw.visitJumpInsn(IFNULL, endIf_);
mw.visitVarInsn(ALOAD, context.var("childContext"));
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ParseContext.class), "setObject", "(Ljava/lang/Object;)V");
mw.visitLabel(endIf_);
}
private void _deserialize_endCheck(Context context, MethodVisitor mw, Label reset_) {
Label _end_if = new Label();
// Label nextToken_ = new Label();
// mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
// mw.visitIntInsn(ILOAD, context.var("matchedCount"));
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");
mw.visitIntInsn(ILOAD, context.var("matchedCount"));
mw.visitJumpInsn(IFLE, reset_);
// mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
// mw.visitVarInsn(ALOAD, context.var("lexer"));
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
// mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "RBRACE", "I");
mw.visitJumpInsn(IF_ICMPNE, reset_);
// mw.visitLabel(nextToken_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "COMMA", "I");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");
mw.visitLabel(_end_if);
}
private void _deserialze_list_obj(Context context, MethodVisitor mw, Label reset_, FieldInfo fieldInfo,
Class<?> fieldClass, Class<?> itemType, int i) {
Label matched_ = new Label();
Label _end_if = new Label();
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "matchField", "([C)Z");
mw.visitJumpInsn(IFNE, matched_);
mw.visitInsn(ACONST_NULL);
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitJumpInsn(GOTO, _end_if);
mw.visitLabel(matched_);
_setFlag(mw, context, i);
Label notNull_ = new Label();
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
getDesc(ObjectDeserializer.class));
mw.visitJumpInsn(IFNONNULL, notNull_);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getConfig", "()"
+ getDesc(ParserConfig.class));
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(itemType)));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ParserConfig.class), "getDeserializer",
"(" + getDesc(Type.class) + ")" + getDesc(ObjectDeserializer.class));
mw.visitFieldInsn(PUTFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
getDesc(ObjectDeserializer.class));
mw.visitLabel(notNull_);
Label valueNotNull_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "NULL", "I");
mw.visitJumpInsn(IF_ICMPNE, valueNotNull_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "COMMA", "I");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");
mw.visitInsn(ACONST_NULL);
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
// loop_end_
mw.visitLabel(valueNotNull_);
// if (lexer.token() != JSONToken.LBRACKET) reset
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "LBRACKET", "I");
mw.visitJumpInsn(IF_ICMPNE, reset_);
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
getDesc(ObjectDeserializer.class));
mw.visitMethodInsn(INVOKEINTERFACE, getType(ObjectDeserializer.class), "getFastMatchToken", "()I");
mw.visitVarInsn(ISTORE, context.var("fastMatchToken"));
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ILOAD, context.var("fastMatchToken"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");
if (fieldClass.isAssignableFrom(ArrayList.class)) {
mw.visitTypeInsn(NEW, getType(ArrayList.class));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(ArrayList.class), "<init>", "()V");
} else if (fieldClass.isAssignableFrom(LinkedList.class)) {
mw.visitTypeInsn(NEW, getType(LinkedList.class));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(LinkedList.class), "<init>", "()V");
} else if (fieldClass.isAssignableFrom(HashSet.class)) {
mw.visitTypeInsn(NEW, getType(HashSet.class));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(HashSet.class), "<init>", "()V");
} else if (fieldClass.isAssignableFrom(TreeSet.class)) {
mw.visitTypeInsn(NEW, getType(TreeSet.class));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(TreeSet.class), "<init>", "()V");
} else {
mw.visitTypeInsn(NEW, getType(fieldClass));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(fieldClass), "<init>", "()V");
}
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
{ // setContext
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
"()" + ASMUtils.getDesc(ParseContext.class));
mw.visitVarInsn(ASTORE, context.var("listContext"));
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
mw.visitLdcInsn(fieldInfo.getName());
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
"(Ljava/lang/Object;Ljava/lang/Object;)" + ASMUtils.getDesc(ParseContext.class));
mw.visitInsn(POP);
}
Label loop_ = new Label();
Label loop_end_ = new Label();
// for (;;) {
mw.visitInsn(ICONST_0);
mw.visitVarInsn(ISTORE, context.var("i"));
mw.visitLabel(loop_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "RBRACKET", "I");
mw.visitJumpInsn(IF_ICMPEQ, loop_end_);
// Object value = itemDeserializer.deserialze(parser, null);
// array.add(value);
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
getDesc(ObjectDeserializer.class));
mw.visitVarInsn(ALOAD, 1);
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(itemType)));
mw.visitVarInsn(ILOAD, context.var("i"));
mw.visitMethodInsn(INVOKESTATIC, getType(Integer.class), "valueOf", "(I)Ljava/lang/Integer;");
mw.visitMethodInsn(INVOKEINTERFACE, getType(ObjectDeserializer.class), "deserialze",
"(" + ASMUtils.getDesc(DefaultJSONParser.class)
+ "Ljava/lang/reflect/Type;Ljava/lang/Object;)Ljava/lang/Object;");
mw.visitVarInsn(ASTORE, context.var("list_item_value"));
mw.visitIincInsn(context.var("i"), 1);
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
mw.visitVarInsn(ALOAD, context.var("list_item_value"));
if (fieldClass.isInterface()) {
mw.visitMethodInsn(INVOKEINTERFACE, getType(fieldClass), "add", "(Ljava/lang/Object;)Z");
} else {
mw.visitMethodInsn(INVOKEVIRTUAL, getType(fieldClass), "add", "(Ljava/lang/Object;)Z");
}
mw.visitInsn(POP);
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "checkListResolve",
"(Ljava/util/Collection;)V");
// if (lexer.token() == JSONToken.COMMA) {
// lexer.nextToken(itemDeserializer.getFastMatchToken());
// continue;
// }
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "COMMA", "I");
mw.visitJumpInsn(IF_ICMPNE, loop_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ILOAD, context.var("fastMatchToken"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");
mw.visitJumpInsn(GOTO, loop_);
mw.visitLabel(loop_end_);
// mw.visitVarInsn(ASTORE, context.var("context"));
// parser.setContext(context);
{ // setContext
mw.visitVarInsn(ALOAD, 1); // parser
mw.visitVarInsn(ALOAD, context.var("listContext"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
"(" + ASMUtils.getDesc(ParseContext.class) + ")V");
}
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "RBRACKET", "I");
mw.visitJumpInsn(IF_ICMPNE, reset_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "COMMA", "I");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");
// lexer.nextToken(JSONToken.COMMA);
mw.visitLabel(_end_if);
}
private void _deserialze_obj(Context context, MethodVisitor mw, Label reset_, FieldInfo fieldInfo,
Class<?> fieldClass, int i) {
Label matched_ = new Label();
Label _end_if = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "matchField", "([C)Z");
mw.visitJumpInsn(IFNE, matched_);
mw.visitInsn(ACONST_NULL);
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitJumpInsn(GOTO, _end_if);
mw.visitLabel(matched_);
_setFlag(mw, context, i);
// increment matchedCount
mw.visitVarInsn(ILOAD, context.var("matchedCount"));
mw.visitInsn(ICONST_1);
mw.visitInsn(IADD);
mw.visitVarInsn(ISTORE, context.var("matchedCount"));
Label notNull_ = new Label();
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_deser__",
getDesc(ObjectDeserializer.class));
mw.visitJumpInsn(IFNONNULL, notNull_);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getConfig", "()"
+ getDesc(ParserConfig.class));
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldInfo.getFieldClass())));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ParserConfig.class), "getDeserializer",
"(" + getDesc(Type.class) + ")" + getDesc(ObjectDeserializer.class));
mw.visitFieldInsn(PUTFIELD, context.getClassName(), fieldInfo.getName() + "_asm_deser__",
getDesc(ObjectDeserializer.class));
mw.visitLabel(notNull_);
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_deser__",
getDesc(ObjectDeserializer.class));
mw.visitVarInsn(ALOAD, 1);
if (fieldInfo.getFieldType() instanceof Class) {
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldInfo.getFieldClass())));
} else {
mw.visitVarInsn(ALOAD, 0);
mw.visitLdcInsn(fieldInfo.getName());
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ASMJavaBeanDeserializer.class), "getFieldType",
"(Ljava/lang/String;)Ljava/lang/reflect/Type;");
}
mw.visitLdcInsn(fieldInfo.getName());
mw.visitMethodInsn(INVOKEINTERFACE, getType(ObjectDeserializer.class), "deserialze",
"(" + getDesc(DefaultJSONParser.class) + getDesc(Type.class)
+ "Ljava/lang/Object;)Ljava/lang/Object;");
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getResolveStatus", "()I");
mw.visitFieldInsn(GETSTATIC, getType(DefaultJSONParser.class), "NeedToResolve", "I");
mw.visitJumpInsn(IF_ICMPNE, _end_if);
// ResolveTask task = parser.getLastResolveTask();
// task.setFieldDeserializer(this);
// task.setOwnerContext(parser.getContext());
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getLastResolveTask",
"()" + getDesc(ResolveTask.class));
mw.visitVarInsn(ASTORE, context.var("resolveTask"));
mw.visitVarInsn(ALOAD, context.var("resolveTask"));
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext", "()"
+ getDesc(ParseContext.class));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ResolveTask.class), "setOwnerContext", "("
+ getDesc(ParseContext.class)
+ ")V");
mw.visitVarInsn(ALOAD, context.var("resolveTask"));
mw.visitVarInsn(ALOAD, 0);
mw.visitLdcInsn(fieldInfo.getName());
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ASMJavaBeanDeserializer.class), "getFieldDeserializer",
"(Ljava/lang/String;)" + getDesc(FieldDeserializer.class));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(ResolveTask.class), "setFieldDeserializer",
"(" + getDesc(FieldDeserializer.class) + ")V");
mw.visitVarInsn(ALOAD, 1);
mw.visitFieldInsn(GETSTATIC, getType(DefaultJSONParser.class), "NONE", "I");
mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setResolveStatus", "(I)V");
mw.visitLabel(_end_if);
}
public FieldDeserializer createFieldDeserializer(ParserConfig mapping, Class<?> clazz, FieldInfo fieldInfo)
throws Exception {
Class<?> fieldClass = fieldInfo.getFieldClass();
if (fieldClass == int.class || fieldClass == long.class || fieldClass == String.class) {
return createStringFieldDeserializer(mapping, clazz, fieldInfo);
}
FieldDeserializer fieldDeserializer = mapping.createFieldDeserializerWithoutASM(mapping, clazz, fieldInfo);
return fieldDeserializer;
}
public FieldDeserializer createStringFieldDeserializer(ParserConfig mapping, Class<?> clazz, FieldInfo fieldInfo)
throws Exception {
Class<?> fieldClass = fieldInfo.getFieldClass();
Method method = fieldInfo.getMethod();
String className = getGenFieldDeserializer(clazz, fieldInfo);
ClassWriter cw = new ClassWriter();
Class<?> superClass;
if (fieldClass == int.class) {
superClass = IntegerFieldDeserializer.class;
} else if (fieldClass == long.class) {
superClass = LongFieldDeserializer.class;
} else {
superClass = StringFieldDeserializer.class;
}
int INVAKE_TYPE;
if (clazz.isInterface()) {
INVAKE_TYPE = INVOKEINTERFACE;
} else {
INVAKE_TYPE = INVOKEVIRTUAL;
}
cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, getType(superClass), null);
{
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "(" + getDesc(ParserConfig.class)
+ getDesc(Class.class) + getDesc(FieldInfo.class)
+ ")V", null, null);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ALOAD, 2);
mw.visitVarInsn(ALOAD, 3);
mw.visitMethodInsn(INVOKESPECIAL, getType(superClass), "<init>", "(" + getDesc(ParserConfig.class)
+ getDesc(Class.class)
+ getDesc(FieldInfo.class) + ")V");
mw.visitInsn(RETURN);
mw.visitMaxs(4, 6);
mw.visitEnd();
}
if (method != null) {
if (fieldClass == int.class) {
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class) + "I)V", null,
null);
mw.visitVarInsn(ALOAD, 1);
mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
mw.visitVarInsn(ILOAD, 2);
mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(),
ASMUtils.getDesc(method));
mw.visitInsn(RETURN);
mw.visitMaxs(3, 3);
mw.visitEnd();
} else if (fieldClass == long.class) {
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class) + "J)V", null,
null);
mw.visitVarInsn(ALOAD, 1);
mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
mw.visitVarInsn(LLOAD, 2);
mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(),
ASMUtils.getDesc(method));
mw.visitInsn(RETURN);
mw.visitMaxs(3, 4);
mw.visitEnd();
} else {
// public void setValue(Object object, Object value)
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class)
+ getDesc(Object.class) + ")V", null, null);
mw.visitVarInsn(ALOAD, 1);
mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
mw.visitVarInsn(ALOAD, 2);
mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(),
ASMUtils.getDesc(method));
mw.visitInsn(RETURN);
mw.visitMaxs(3, 3);
mw.visitEnd();
}
}
byte[] code = cw.toByteArray();
Class<?> exampleClass = classLoader.defineClassPublic(className, code, 0, code.length);
Constructor<?> constructor = exampleClass.getConstructor(ParserConfig.class, Class.class, FieldInfo.class);
Object instance = constructor.newInstance(mapping, clazz, fieldInfo);
return (FieldDeserializer) instance;
}
static class Context {
private int variantIndex = 5;
private Map<String, Integer> variants = new HashMap<String, Integer>();
private Class<?> clazz;
private final DeserializeBeanInfo beanInfo;
private String className;
private List<FieldInfo> fieldInfoList;
public Context(String className, ParserConfig config, DeserializeBeanInfo beanInfo, int initVariantIndex){
this.className = className;
this.clazz = beanInfo.getClazz();
this.variantIndex = initVariantIndex;
this.beanInfo = beanInfo;
fieldInfoList = new ArrayList<FieldInfo>(beanInfo.getFieldList());
}
public String getClassName() {
return className;
}
public List<FieldInfo> getFieldInfoList() {
return fieldInfoList;
}
public DeserializeBeanInfo getBeanInfo() {
return beanInfo;
}
public Class<?> getClazz() {
return clazz;
}
public int getVariantCount() {
return variantIndex;
}
public int var(String name, int increment) {
Integer i = variants.get(name);
if (i == null) {
variants.put(name, variantIndex);
variantIndex += increment;
}
i = variants.get(name);
return i.intValue();
}
public int var(String name) {
Integer i = variants.get(name);
if (i == null) {
variants.put(name, variantIndex++);
}
i = variants.get(name);
return i.intValue();
}
}
private void _init(ClassWriter cw, Context context) {
for (int i = 0, size = context.getFieldInfoList().size(); i < size; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
// public FieldVisitor visitField(final int access, final String name, final String desc, final String
// signature, final Object value) {
FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_prefix__", "[C");
fw.visitEnd();
}
for (int i = 0, size = context.getFieldInfoList().size(); i < size; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
Class<?> fieldClass = fieldInfo.getFieldClass();
if (fieldClass.isPrimitive()) {
continue;
}
if (fieldClass.isEnum()) {
continue;
}
if (Collection.class.isAssignableFrom(fieldClass)) {
FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_list_item_deser__",
getDesc(ObjectDeserializer.class));
fw.visitEnd();
} else {
FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_deser__",
getDesc(ObjectDeserializer.class));
fw.visitEnd();
}
}
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "(" + getDesc(ParserConfig.class)
+ getDesc(Class.class) + ")V", null, null);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ALOAD, 2);
mw.visitMethodInsn(INVOKESPECIAL, getType(ASMJavaBeanDeserializer.class), "<init>",
"(" + getDesc(ParserConfig.class) + getDesc(Class.class) + ")V");
mw.visitVarInsn(ALOAD, 0);
mw.visitFieldInsn(GETFIELD, getType(ASMJavaBeanDeserializer.class), "serializer",
getDesc(InnerJavaBeanDeserializer.class));
mw.visitMethodInsn(INVOKEVIRTUAL, getType(JavaBeanDeserializer.class), "getFieldDeserializerMap",
"()" + getDesc(Map.class));
mw.visitInsn(POP);
// init fieldNamePrefix
for (int i = 0, size = context.getFieldInfoList().size(); i < size; ++i) {
FieldInfo fieldInfo = context.getFieldInfoList().get(i);
mw.visitVarInsn(ALOAD, 0);
mw.visitLdcInsn("\"" + fieldInfo.getName() + "\":"); // public char[] toCharArray()
mw.visitMethodInsn(INVOKEVIRTUAL, getType(String.class), "toCharArray", "()" + getDesc(char[].class));
mw.visitFieldInsn(PUTFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
}
mw.visitInsn(RETURN);
mw.visitMaxs(4, 4);
mw.visitEnd();
}
private void _createInstance(ClassWriter cw, Context context) {
MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "createInstance", "(" + getDesc(DefaultJSONParser.class)
+ getDesc(Type.class) + ")Ljava/lang/Object;",
null, null);
mw.visitTypeInsn(NEW, getType(context.getClazz()));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, getType(context.getClazz()), "<init>", "()V");
mw.visitInsn(ARETURN);
mw.visitMaxs(3, 3);
mw.visitEnd();
}
}