package cn.wensiqun.asmsupport.block.method.cinit;
import java.util.ArrayList;
import java.util.List;
import cn.wensiqun.asmsupport.Parameterized;
import cn.wensiqun.asmsupport.block.method.SuperMethodBody;
import cn.wensiqun.asmsupport.clazz.AClassFactory;
import cn.wensiqun.asmsupport.definition.value.Value;
import cn.wensiqun.asmsupport.definition.variable.GlobalVariable;
import cn.wensiqun.asmsupport.exception.ASMSupportException;
import cn.wensiqun.asmsupport.operators.array.ArrayValue;
import cn.wensiqun.asmsupport.operators.method.MethodInvoker;
import cn.wensiqun.asmsupport.utils.ModifierUtils;
/**
*
*
*/
public abstract class EnumCInitBody extends SuperMethodBody implements IEnumCInitBody {
private List<EnumConstructorInfo> enumArgumentsList;
protected List<String> enumNameList;
public void setEnumNameList(List<String> enumNameList) {
this.enumNameList = enumNameList;
}
@Override
protected void init() {
enumArgumentsList = new ArrayList<EnumConstructorInfo>(3);
return;
}
private class EnumConstructorInfo{
String name;
Parameterized[] argus;
private EnumConstructorInfo(String name, Parameterized[] argus) {
super();
this.name = name;
this.argus = argus;
}
}
@Override
public void newEnum(String name, Parameterized... argus){
if(!ModifierUtils.isEnum(getMethodOwner().getModifiers())){
throw new IllegalArgumentException("cannot create an enum constant cause by current class is not enum type");
}
GlobalVariable constant = getMethodOwner().getGlobalVariable(name);
if(!ModifierUtils.isEnum(constant.getGlobalVariableEntity().getModifiers())){
throw new IllegalArgumentException("cannot new an enum instant assign to non-enum type variable");
}
enumArgumentsList.add(new EnumConstructorInfo(name, argus));
}
/**
* 将构造枚举类型的操作添加到执行队列
*/
private void constructEachEnumConstant(){
constructEnumField();
if(getMethodOwner().getEnumNum() != enumArgumentsList.size()){
throw new ASMSupportException("exist unassign enum constant!");
}
Parameterized[] values = new Parameterized[getMethodOwner().getEnumNum()];
GlobalVariable enumConstant;
int i = 0;
for(EnumConstructorInfo enumArgu : enumArgumentsList){
enumConstant = getMethodOwner().getGlobalVariable(enumArgu.name);
values[i] = enumConstant;
String enumName = enumArgu.name;
Parameterized[] otherArgus = enumArgu.argus;
Parameterized[] enumArgus = new Parameterized[otherArgus.length + 2];
enumArgus[0] = Value.value(enumName);
enumArgus[1] = Value.value(i);
System.arraycopy(otherArgus, 0, enumArgus, 2, otherArgus.length);
MethodInvoker mi = invokeConstructor(getMethodOwner(), enumArgus);
assign(enumConstant, mi);
i++;
}
GlobalVariable gv = getMethodOwner().getGlobalVariable("ENUM$VALUES");
ArrayValue av = newArrayWithValue(AClassFactory.getArrayClass(getMethodOwner(), 1), values);
assign(gv, av);
}
@Override
public void generateBody() {
constructEachEnumConstant();
blockBody();
}
/**
* call newEnum method at this method.
* get some information about current enum type constructor
*
* 在此方法中调用newEnum方法， 获取构造枚举列表中每个枚举类型需要的参数信息，枚举类型名等信息。
*
*/
public abstract void constructEnumField();
/**
*
*/
public abstract void blockBody();
}