package jode;
import sun.tools.java.Type;

public class IfThenElseOperator extends SimpleOperator {
    public IfThenElseOperator(int addr, int length, Type type) {
        super(addr,length, type, 0, 3);
        operandTypes[0] = Type.tBoolean;
    }
    
    public int getOperandCount() {
        return 3;
    }

    public int getPriority() {
        return 200;
    }

    public int getOperandPriority(int i) {
        switch (i) {
        case 0:
            return 201;
        case 1:
            return 0;
        case 2:
            return 200;
        default:
            throw new AssertError("ifthenelse with operand "+i);
        }
    }

    public void setOperandType(Type[] inputTypes) {
        super.setOperandType(inputTypes);
        Type operandType = 
            UnknownType.commonType(operandTypes[1],operandTypes[2]);
        type = operandTypes[1] = operandTypes[2] = operandType;
    }

    /**
     * Sets the return type of this operator.
     * @return true if the operand types changed
     */
    public boolean setType(Type newType) {
        Type operandType = 
            UnknownType.commonType(operandTypes[1], newType);
        if (type != operandType) {
            type = operandTypes[1] = operandTypes[2] = operandType;
            return true;
        }
        return false;
    }

    public String toString(CodeAnalyzer ca, String[] operands) {
        return operands[0] + " ? "+operands[1]+" : "+ operands[2];
    }
}