Java Type.BT_FLOAT属性代码示例

/**
 * Returns the appropriate {@code const} rop for the given
 * type. The result is a shared instance.
 *
 * @param type {@code non-null;} type of the constant
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opConst(TypeBearer type) {
    if (type.getType() == Type.KNOWN_NULL) {
        return CONST_OBJECT_NOTHROW;
    }

    switch (type.getBasicFrameType()) {
        case Type.BT_INT:    return CONST_INT;
        case Type.BT_LONG:   return CONST_LONG;
        case Type.BT_FLOAT:  return CONST_FLOAT;
        case Type.BT_DOUBLE: return CONST_DOUBLE;
        case Type.BT_OBJECT: return CONST_OBJECT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code aget} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} element type of array being accessed
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opAget(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_INT:     return AGET_INT;
        case Type.BT_LONG:    return AGET_LONG;
        case Type.BT_FLOAT:   return AGET_FLOAT;
        case Type.BT_DOUBLE:  return AGET_DOUBLE;
        case Type.BT_OBJECT:  return AGET_OBJECT;
        case Type.BT_BOOLEAN: return AGET_BOOLEAN;
        case Type.BT_BYTE:    return AGET_BYTE;
        case Type.BT_CHAR:    return AGET_CHAR;
        case Type.BT_SHORT:   return AGET_SHORT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code aput} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} element type of array being accessed
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opAput(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_INT:     return APUT_INT;
        case Type.BT_LONG:    return APUT_LONG;
        case Type.BT_FLOAT:   return APUT_FLOAT;
        case Type.BT_DOUBLE:  return APUT_DOUBLE;
        case Type.BT_OBJECT:  return APUT_OBJECT;
        case Type.BT_BOOLEAN: return APUT_BOOLEAN;
        case Type.BT_BYTE:    return APUT_BYTE;
        case Type.BT_CHAR:    return APUT_CHAR;
        case Type.BT_SHORT:   return APUT_SHORT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code get-field} rop for the given
 * type. The result is a shared instance.
 *
 * @param type {@code non-null;} type of the field in question
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opGetField(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_INT:     return GET_FIELD_INT;
        case Type.BT_LONG:    return GET_FIELD_LONG;
        case Type.BT_FLOAT:   return GET_FIELD_FLOAT;
        case Type.BT_DOUBLE:  return GET_FIELD_DOUBLE;
        case Type.BT_OBJECT:  return GET_FIELD_OBJECT;
        case Type.BT_BOOLEAN: return GET_FIELD_BOOLEAN;
        case Type.BT_BYTE:    return GET_FIELD_BYTE;
        case Type.BT_CHAR:    return GET_FIELD_CHAR;
        case Type.BT_SHORT:   return GET_FIELD_SHORT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code put-field} rop for the given
 * type. The result is a shared instance.
 *
 * @param type {@code non-null;} type of the field in question
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opPutField(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_INT:     return PUT_FIELD_INT;
        case Type.BT_LONG:    return PUT_FIELD_LONG;
        case Type.BT_FLOAT:   return PUT_FIELD_FLOAT;
        case Type.BT_DOUBLE:  return PUT_FIELD_DOUBLE;
        case Type.BT_OBJECT:  return PUT_FIELD_OBJECT;
        case Type.BT_BOOLEAN: return PUT_FIELD_BOOLEAN;
        case Type.BT_BYTE:    return PUT_FIELD_BYTE;
        case Type.BT_CHAR:    return PUT_FIELD_CHAR;
        case Type.BT_SHORT:   return PUT_FIELD_SHORT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code put-static} rop for the given
 * type. The result is a shared instance.
 *
 * @param type {@code non-null;} type of the field in question
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opPutStatic(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_INT:     return PUT_STATIC_INT;
        case Type.BT_LONG:    return PUT_STATIC_LONG;
        case Type.BT_FLOAT:   return PUT_STATIC_FLOAT;
        case Type.BT_DOUBLE:  return PUT_STATIC_DOUBLE;
        case Type.BT_OBJECT:  return PUT_STATIC_OBJECT;
        case Type.BT_BOOLEAN: return PUT_STATIC_BOOLEAN;
        case Type.BT_BYTE:    return PUT_STATIC_BYTE;
        case Type.BT_CHAR:    return PUT_STATIC_CHAR;
        case Type.BT_SHORT:   return PUT_STATIC_SHORT;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code move} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} type of value being moved
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opMove(TypeBearer type) {
    switch (type.getBasicFrameType()) {
        case Type.BT_INT:    return MOVE_INT;
        case Type.BT_LONG:   return MOVE_LONG;
        case Type.BT_FLOAT:  return MOVE_FLOAT;
        case Type.BT_DOUBLE: return MOVE_DOUBLE;
        case Type.BT_OBJECT: return MOVE_OBJECT;
        case Type.BT_ADDR:   return MOVE_RETURN_ADDRESS;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code return} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} type of value being returned
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opReturn(TypeBearer type) {
    switch (type.getBasicFrameType()) {
        case Type.BT_INT:    return RETURN_INT;
        case Type.BT_LONG:   return RETURN_LONG;
        case Type.BT_FLOAT:  return RETURN_FLOAT;
        case Type.BT_DOUBLE: return RETURN_DOUBLE;
        case Type.BT_OBJECT: return RETURN_OBJECT;
        case Type.BT_VOID:   return RETURN_VOID;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate binary arithmetic rop for the given type
 * and arguments. The result is a shared instance.
 *
 * @param types {@code non-null;} sources of the operation
 * @param int1 {@code non-null;} the int-to-constant rop
 * @param long1 {@code non-null;} the long-to-constant rop
 * @param float1 {@code null-ok;} the float-to-constant rop, if any
 * @param double1 {@code null-ok;} the double-to-constant rop, if any
 * @param int2 {@code non-null;} the int-to-int rop
 * @param long2 {@code non-null;} the long-to-long or long-to-int rop
 * @param float2 {@code null-ok;} the float-to-float rop, if any
 * @param double2 {@code null-ok;} the double-to-double rop, if any
 * @return {@code non-null;} an appropriate instance
 */
private static Rop pickBinaryOp(TypeList types, Rop int1, Rop long1,
                                Rop float1, Rop double1, Rop int2,
                                Rop long2, Rop float2, Rop double2) {
    int bt1 = types.getType(0).getBasicFrameType();
    Rop result = null;

    switch (types.size()) {
        case 1: {
            switch(bt1) {
                case Type.BT_INT:    return int1;
                case Type.BT_LONG:   return long1;
                case Type.BT_FLOAT:  result = float1; break;
                case Type.BT_DOUBLE: result = double1; break;
            }
            break;
        }
        case 2: {
            switch(bt1) {
                case Type.BT_INT:    return int2;
                case Type.BT_LONG:   return long2;
                case Type.BT_FLOAT:  result = float2; break;
                case Type.BT_DOUBLE: result = double2; break;
            }
            break;
        }
    }

    if (result == null) {
        return throwBadTypes(types);
    }

    return result;
}
 

/**
 * Returns the appropriate {@code neg} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} type of value being operated on
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opNeg(TypeBearer type) {
    switch (type.getBasicFrameType()) {
        case Type.BT_INT:    return NEG_INT;
        case Type.BT_LONG:   return NEG_LONG;
        case Type.BT_FLOAT:  return NEG_FLOAT;
        case Type.BT_DOUBLE: return NEG_DOUBLE;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code cmpl} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} type of value being compared
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opCmpl(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_LONG:   return CMPL_LONG;
        case Type.BT_FLOAT:  return CMPL_FLOAT;
        case Type.BT_DOUBLE: return CMPL_DOUBLE;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code cmpg} rop for the given type. The
 * result is a shared instance.
 *
 * @param type {@code non-null;} type of value being compared
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opCmpg(TypeBearer type) {
    switch (type.getBasicType()) {
        case Type.BT_FLOAT:  return CMPG_FLOAT;
        case Type.BT_DOUBLE: return CMPG_DOUBLE;
    }

    return throwBadType(type);
}
 

/**
 * Returns the appropriate {@code conv} rop for the given types. The
 * result is a shared instance.
 *
 * @param dest {@code non-null;} target value type
 * @param source {@code non-null;} source value type
 * @return {@code non-null;} an appropriate instance
 */
public static Rop opConv(TypeBearer dest, TypeBearer source) {
    int dbt = dest.getBasicFrameType();
    switch (source.getBasicFrameType()) {
        case Type.BT_INT: {
            switch (dbt) {
                case Type.BT_LONG:   return CONV_I2L;
                case Type.BT_FLOAT:  return CONV_I2F;
                case Type.BT_DOUBLE: return CONV_I2D;
                default:             break;
            }
        }
        case Type.BT_LONG: {
            switch (dbt) {
                case Type.BT_INT:    return CONV_L2I;
                case Type.BT_FLOAT:  return CONV_L2F;
                case Type.BT_DOUBLE: return CONV_L2D;
                default:             break;
            }
        }
        case Type.BT_FLOAT: {
            switch (dbt) {
                case Type.BT_INT:    return CONV_F2I;
                case Type.BT_LONG:   return CONV_F2L;
                case Type.BT_DOUBLE: return CONV_F2D;
                default:             break;
            }
        }
        case Type.BT_DOUBLE: {
            switch (dbt) {
                case Type.BT_INT:    return CONV_D2I;
                case Type.BT_LONG:   return CONV_D2L;
                case Type.BT_FLOAT:  return CONV_D2F;
                default:             break;
            }
        }
    }

    return throwBadTypes(StdTypeList.make(dest.getType(),
                                          source.getType()));
}