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// Copyright 2018 Grove Enterprises LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//use std::fmt;
//use std::ops::Add;
//use std::rc::Rc;
//
//use arrow::array::{Int32Array, Int64Array};
//use arrow::datatypes::DataType;
//
//use super::error::{ExecutionError, Result};
//impl ScalarValue {
// pub fn get_datatype(&self) -> DataType {
// match *self {
// ScalarValue::Boolean(_) => DataType::Boolean,
// ScalarValue::UInt8(_) => DataType::UInt8,
// ScalarValue::UInt16(_) => DataType::UInt16,
// ScalarValue::UInt32(_) => DataType::UInt32,
// ScalarValue::UInt64(_) => DataType::UInt64,
// ScalarValue::Int8(_) => DataType::Int8,
// ScalarValue::Int16(_) => DataType::Int16,
// ScalarValue::Int32(_) => DataType::Int32,
// ScalarValue::Int64(_) => DataType::Int64,
// ScalarValue::Float32(_) => DataType::Float32,
// ScalarValue::Float64(_) => DataType::Float64,
// ScalarValue::Utf8(_) => DataType::Utf8,
// ScalarValue::Struct(_) => unimplemented!(),
// ScalarValue::Null => unimplemented!(),
// }
// }
//}
//
//pub fn can_coerce_from(left: &DataType, other: &DataType) -> bool {
// use self::DataType::*;
// match left {
// Int8 => match other {
// Int8 => true,
// _ => false,
// },
// Int16 => match other {
// Int8 | Int16 => true,
// _ => false,
// },
// Int32 => match other {
// Int8 | Int16 | Int32 => true,
// _ => false,
// },
// Int64 => match other {
// Int8 | Int16 | Int32 | Int64 => true,
// _ => false,
// },
// UInt8 => match other {
// UInt8 => true,
// _ => false,
// },
// UInt16 => match other {
// UInt8 | UInt16 => true,
// _ => false,
// },
// UInt32 => match other {
// UInt8 | UInt16 | UInt32 => true,
// _ => false,
// },
// UInt64 => match other {
// UInt8 | UInt16 | UInt32 | UInt64 => true,
// _ => false,
// },
// Float32 => match other {
// Int8 | Int16 | Int32 | Int64 => true,
// UInt8 | UInt16 | UInt32 | UInt64 => true,
// Float32 => true,
// _ => false,
// },
// Float64 => match other {
// Int8 | Int16 | Int32 | Int64 => true,
// UInt8 | UInt16 | UInt32 | UInt64 => true,
// Float32 | Float64 => true,
// _ => false,
// },
// _ => false,
// }
//}
//
//macro_rules! primitive_accessor {
// ($NAME:ident, $VARIANT:ident, $TY:ty) => {
// pub fn $NAME(&self) -> Result<$TY> {
// match self {
// ScalarValue::$VARIANT(v) => Ok(*v),
// other => Err(ExecutionError::General(format!("Cannot access scalar value {:?} as {}", other, stringify!($VARIANT))))
// }
// }
// }
//}
//
//impl ScalarValue {
// primitive_accessor!(get_bool, Boolean, bool);
// primitive_accessor!(get_i8, Int8, i8);
// primitive_accessor!(get_i16, Int16, i16);
// primitive_accessor!(get_i32, Int32, i32);
// primitive_accessor!(get_i64, Int64, i64);
// primitive_accessor!(get_u8, UInt8, u8);
// primitive_accessor!(get_u16, UInt16, u16);
// primitive_accessor!(get_u32, UInt32, u32);
// primitive_accessor!(get_u64, UInt64, u64);
// primitive_accessor!(get_f32, Float32, f32);
// primitive_accessor!(get_f64, Float64, f64);
//
// pub fn get_string(&self) -> Result<&String> {
// match *self {
// ScalarValue::Utf8(ref v) => Ok(v),
// _ => Err(ExecutionError::from("TBD")),
// }
// }
//
// pub fn get_struct(&self) -> Result<&Vec<ScalarValue>> {
// match *self {
// ScalarValue::Struct(ref v) => Ok(v),
// _ => Err(ExecutionError::from("TBD")),
// }
// }
//}
//
//impl Add for ScalarValue {
// type Output = ScalarValue;
//
// fn add(self, rhs: ScalarValue) -> ScalarValue {
// assert_eq!(self.get_datatype(), rhs.get_datatype());
// match self {
// ScalarValue::UInt8(x) => ScalarValue::UInt8(x + rhs.get_u8().unwrap()),
// ScalarValue::UInt16(x) => ScalarValue::UInt16(x + rhs.get_u16().unwrap()),
// ScalarValue::UInt32(x) => ScalarValue::UInt32(x + rhs.get_u32().unwrap()),
// ScalarValue::UInt64(x) => ScalarValue::UInt64(x + rhs.get_u64().unwrap()),
// ScalarValue::Float32(x) => ScalarValue::Float32(x + rhs.get_f32().unwrap()),
// ScalarValue::Float64(x) => ScalarValue::Float64(x + rhs.get_f64().unwrap()),
// ScalarValue::Int8(x) => ScalarValue::Int8(x.saturating_add(rhs.get_i8().unwrap())),
// ScalarValue::Int16(x) => ScalarValue::Int16(x.saturating_add(rhs.get_i16().unwrap())),
// ScalarValue::Int32(x) => ScalarValue::Int32(x.saturating_add(rhs.get_i32().unwrap())),
// ScalarValue::Int64(x) => ScalarValue::Int64(x.saturating_add(rhs.get_i64().unwrap())),
// _ => panic!("Unsupported type for addition"),
// }
// }
//}
//
//impl fmt::Display for ScalarValue {
// fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
// match self {
// ScalarValue::Null => write!(f, "NULL"),
// ScalarValue::Boolean(v) => write!(f, "{}", v),
// ScalarValue::Int8(v) => write!(f, "{}", v),
// ScalarValue::Int16(v) => write!(f, "{}", v),
// ScalarValue::Int32(v) => write!(f, "{}", v),
// ScalarValue::Int64(v) => write!(f, "{}", v),
// ScalarValue::UInt8(v) => write!(f, "{}", v),
// ScalarValue::UInt16(v) => write!(f, "{}", v),
// ScalarValue::UInt32(v) => write!(f, "{}", v),
// ScalarValue::UInt64(v) => write!(f, "{}", v),
// ScalarValue::Float32(v) => write!(f, "{}", v),
// ScalarValue::Float64(v) => write!(f, "{}", v),
// ScalarValue::Utf8(ref v) => write!(f, "{}", v),
// ScalarValue::Struct(ref v) => {
// for i in 0..v.len() {
// if i > 0 {
// write!(f, ", ")?;
// }
// write!(f, "{}", v[i])?;
// }
// Ok(())
// }
// }
// }
//}