package midend.llvm.instr;

import java.util.ArrayList;

import midend.llvm.value.IrFuncValue;
import midend.llvm.value.IrValue;

public class CallInstr extends IrInstr {
    public CallInstr(String name, IrFuncValue func, ArrayList<IrValue> args) {
        super(func.getRetType(), name, IrInstrType.CALL);
        addUse(func);
        for (IrValue arg : args) {
            addUse(arg);
        }
    }

    public boolean callVoid() {
        return getType().isVoid();
    }

    public IrFuncValue getCalledFunc() {
        return (IrFuncValue) getUse(0);
    }

    public ArrayList<IrValue> getArgs() {
        ArrayList<IrValue> args = new ArrayList<>();
        for (int i = 1; i < getNumUses(); i++) {
            args.add(getUse(i));
        }
        return args;
    }

    public String toString() {
        StringBuilder sb = new StringBuilder();
        if (!callVoid()) {
            sb.append(getName() + " = ");
        }
        sb.append("call " + getType() + " " + getCalledFunc().getName() + "(");
        for (int i = 1; i < getNumUses(); i++) {
            sb.append(getUse(i).getType() + " " + getUse(i).getName());
            if (i < getNumUses() - 1) {
                sb.append(", ");
            }
        }
        sb.append(")");
        return sb.toString();
    }
}