use of com.alibaba.fastjson.asm.MethodWriter in project fastjson by alibaba.
the class ASMDeserializerFactory method _deserialzeArrayMapping.
private void _deserialzeArrayMapping(ClassWriter cw, Context context) {
MethodVisitor mw = new MethodWriter(cw, ACC_PUBLIC, "deserialzeArrayMapping", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", null, null);
defineVarLexer(context, mw);
_createInstance(context, mw);
FieldInfo[] sortedFieldInfoList = context.beanInfo.sortedFields;
int fieldListSize = sortedFieldInfoList.length;
for (int i = 0; i < fieldListSize; ++i) {
final boolean last = (i == fieldListSize - 1);
final char seperator = last ? ']' : ',';
FieldInfo fieldInfo = sortedFieldInfoList[i];
Class<?> fieldClass = fieldInfo.fieldClass;
Type fieldType = fieldInfo.fieldType;
if (//
fieldClass == byte.class || //
fieldClass == short.class || fieldClass == int.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanInt", "(C)I");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
} else if (fieldClass == long.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanLong", "(C)J");
mw.visitVarInsn(LSTORE, context.var(fieldInfo.name + "_asm", 2));
} else if (fieldClass == boolean.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanBoolean", "(C)Z");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
} else if (fieldClass == float.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFloat", "(C)F");
mw.visitVarInsn(FSTORE, context.var(fieldInfo.name + "_asm"));
} else if (fieldClass == double.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanDouble", "(C)D");
mw.visitVarInsn(DSTORE, context.var(fieldInfo.name + "_asm", 2));
} else if (fieldClass == char.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanString", "(C)Ljava/lang/String;");
mw.visitInsn(ICONST_0);
mw.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "charAt", "(I)C");
mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
} else if (fieldClass == String.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanString", "(C)Ljava/lang/String;");
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
} else if (fieldClass.isEnum()) {
Label enumNumIf_ = new Label();
Label enumNumErr_ = new Label();
Label enumStore_ = new Label();
Label enumQuote_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "getCurrent", "()C");
mw.visitInsn(DUP);
mw.visitVarInsn(ISTORE, context.var("ch"));
mw.visitLdcInsn((int) 'n');
mw.visitJumpInsn(IF_ICMPEQ, enumQuote_);
mw.visitVarInsn(ILOAD, context.var("ch"));
mw.visitLdcInsn((int) '\"');
mw.visitJumpInsn(IF_ICMPNE, enumNumIf_);
mw.visitLabel(enumQuote_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(desc(fieldClass)));
mw.visitVarInsn(ALOAD, 1);
mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "getSymbolTable", "()" + desc(SymbolTable.class));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanEnum", "(Ljava/lang/Class;" + desc(SymbolTable.class) + "C)Ljava/lang/Enum;");
mw.visitJumpInsn(GOTO, enumStore_);
// (ch >= '0' && ch <= '9') {
mw.visitLabel(enumNumIf_);
mw.visitVarInsn(ILOAD, context.var("ch"));
mw.visitLdcInsn((int) '0');
mw.visitJumpInsn(IF_ICMPLT, enumNumErr_);
mw.visitVarInsn(ILOAD, context.var("ch"));
mw.visitLdcInsn((int) '9');
mw.visitJumpInsn(IF_ICMPGT, enumNumErr_);
_getFieldDeser(context, mw, fieldInfo);
// cast
mw.visitTypeInsn(CHECKCAST, type(EnumDeserializer.class));
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanInt", "(C)I");
mw.visitMethodInsn(INVOKEVIRTUAL, type(EnumDeserializer.class), "valueOf", "(I)Ljava/lang/Enum;");
mw.visitJumpInsn(GOTO, enumStore_);
mw.visitLabel(enumNumErr_);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, type(JavaBeanDeserializer.class), "scanEnum", "(L" + JSONLexerBase + ";C)Ljava/lang/Enum;");
mw.visitLabel(enumStore_);
// cast
mw.visitTypeInsn(CHECKCAST, type(fieldClass));
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
} else if (Collection.class.isAssignableFrom(fieldClass)) {
Class<?> itemClass = TypeUtils.getCollectionItemClass(fieldType);
if (itemClass == String.class) {
if (fieldClass == List.class || fieldClass == Collections.class || fieldClass == ArrayList.class) {
mw.visitTypeInsn(NEW, type(ArrayList.class));
mw.visitInsn(DUP);
mw.visitMethodInsn(INVOKESPECIAL, type(ArrayList.class), "<init>", "()V");
} else {
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(desc(fieldClass)));
mw.visitMethodInsn(INVOKESTATIC, type(TypeUtils.class), "createCollection", "(Ljava/lang/Class;)Ljava/util/Collection;");
}
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(ALOAD, context.var(fieldInfo.name + "_asm"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanStringArray", "(Ljava/util/Collection;C)V");
Label valueNullEnd_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.VALUE_NULL);
mw.visitJumpInsn(IF_ICMPNE, valueNullEnd_);
mw.visitInsn(ACONST_NULL);
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
mw.visitLabel(valueNullEnd_);
} else {
Label notError_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "token", "()I");
mw.visitVarInsn(ISTORE, context.var("token"));
mw.visitVarInsn(ILOAD, context.var("token"));
int token = i == 0 ? JSONToken.LBRACKET : JSONToken.COMMA;
mw.visitLdcInsn(token);
mw.visitJumpInsn(IF_ICMPEQ, notError_);
// DefaultJSONParser
mw.visitVarInsn(ALOAD, 1);
mw.visitVarInsn(ILOAD, context.var("token"));
mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "throwException", "(I)V");
mw.visitLabel(notError_);
Label quickElse_ = new Label(), quickEnd_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "getCurrent", "()C");
mw.visitVarInsn(BIPUSH, '[');
mw.visitJumpInsn(IF_ICMPNE, quickElse_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "next", "()C");
mw.visitInsn(POP);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.LBRACKET);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "setToken", "(I)V");
mw.visitJumpInsn(GOTO, quickEnd_);
mw.visitLabel(quickElse_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.LBRACKET);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "nextToken", "(I)V");
mw.visitLabel(quickEnd_);
_newCollection(mw, fieldClass, i, false);
mw.visitInsn(DUP);
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
_getCollectionFieldItemDeser(context, mw, fieldInfo, itemClass);
mw.visitVarInsn(ALOAD, 1);
mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(desc(itemClass)));
mw.visitVarInsn(ALOAD, 3);
mw.visitMethodInsn(INVOKESTATIC, type(JavaBeanDeserializer.class), "parseArray", //
"(Ljava/util/Collection;" + //
desc(ObjectDeserializer.class) + "L" + DefaultJSONParser + //
";" + "Ljava/lang/reflect/Type;Ljava/lang/Object;)V");
}
} else if (fieldClass.isArray()) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONToken.LBRACKET);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "nextToken", "(I)V");
mw.visitVarInsn(ALOAD, Context.parser);
mw.visitVarInsn(ALOAD, 0);
mw.visitLdcInsn(i);
mw.visitMethodInsn(INVOKEVIRTUAL, type(JavaBeanDeserializer.class), "getFieldType", "(I)Ljava/lang/reflect/Type;");
mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "parseObject", "(Ljava/lang/reflect/Type;)Ljava/lang/Object;");
// cast
mw.visitTypeInsn(CHECKCAST, type(fieldClass));
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
} else {
Label objElseIf_ = new Label();
Label objEndIf_ = new Label();
if (fieldClass == java.util.Date.class) {
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "getCurrent", "()C");
mw.visitLdcInsn((int) '1');
mw.visitJumpInsn(IF_ICMPNE, objElseIf_);
mw.visitTypeInsn(NEW, type(java.util.Date.class));
mw.visitInsn(DUP);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitVarInsn(BIPUSH, seperator);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanLong", "(C)J");
mw.visitMethodInsn(INVOKESPECIAL, type(java.util.Date.class), "<init>", "(J)V");
mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
mw.visitJumpInsn(GOTO, objEndIf_);
}
mw.visitLabel(objElseIf_);
_quickNextToken(context, mw, JSONToken.LBRACKET);
_deserObject(context, mw, fieldInfo, fieldClass, i);
mw.visitVarInsn(ALOAD, 0);
mw.visitVarInsn(ALOAD, context.var("lexer"));
if (!last) {
mw.visitLdcInsn(JSONToken.COMMA);
} else {
mw.visitLdcInsn(JSONToken.RBRACKET);
}
//
mw.visitMethodInsn(//
INVOKESPECIAL, //
type(JavaBeanDeserializer.class), "check", "(" + desc(JSONLexer.class) + "I)V");
mw.visitLabel(objEndIf_);
continue;
}
}
_batchSet(context, mw, false);
Label quickElse_ = new Label(), quickElseIf_ = new Label(), quickElseIfEOI_ = new Label(), quickEnd_ = new Label();
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "getCurrent", "()C");
mw.visitInsn(DUP);
mw.visitVarInsn(ISTORE, context.var("ch"));
mw.visitVarInsn(BIPUSH, ',');
mw.visitJumpInsn(IF_ICMPNE, quickElseIf_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "next", "()C");
mw.visitInsn(POP);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.COMMA);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "setToken", "(I)V");
mw.visitJumpInsn(GOTO, quickEnd_);
mw.visitLabel(quickElseIf_);
mw.visitVarInsn(ILOAD, context.var("ch"));
mw.visitVarInsn(BIPUSH, ']');
mw.visitJumpInsn(IF_ICMPNE, quickElseIfEOI_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "next", "()C");
mw.visitInsn(POP);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.RBRACKET);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "setToken", "(I)V");
mw.visitJumpInsn(GOTO, quickEnd_);
mw.visitLabel(quickElseIfEOI_);
mw.visitVarInsn(ILOAD, context.var("ch"));
mw.visitVarInsn(BIPUSH, (char) JSONLexer.EOI);
mw.visitJumpInsn(IF_ICMPNE, quickElse_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "next", "()C");
mw.visitInsn(POP);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.EOF);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "setToken", "(I)V");
mw.visitJumpInsn(GOTO, quickEnd_);
mw.visitLabel(quickElse_);
mw.visitVarInsn(ALOAD, context.var("lexer"));
mw.visitLdcInsn(JSONToken.COMMA);
mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "nextToken", "(I)V");
mw.visitLabel(quickEnd_);
mw.visitVarInsn(ALOAD, context.var("instance"));
mw.visitInsn(ARETURN);
mw.visitMaxs(5, context.variantIndex);
mw.visitEnd();
}
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