mech_core/
value.rs

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use crate::matrix::Matrix;
use crate::*;
use crate::nodes::Matrix as Mat;
use crate::{MechError, MechErrorKind, hash_str, nodes::Kind as NodeKind, nodes::*, humanize};

use na::{Vector3, DVector, Vector2, Vector4, RowDVector, Matrix1, Matrix3, Matrix4, RowVector3, RowVector4, RowVector2, DMatrix, Rotation3, Matrix2x3, Matrix3x2, Matrix6, Matrix2};
use std::hash::{Hash, Hasher};
use indexmap::set::IndexSet;
use indexmap::map::IndexMap;
use tabled::{
  builder::Builder,
  settings::{object::Rows,Panel, Span, Alignment, Modify, Style},
  Tabled,
};
use paste::paste;

macro_rules! impl_as_type {
  ($target_type:ty) => {
    paste!{
      pub fn [<as_ $target_type>](&self) -> Option<Ref<$target_type>> {
        match self {
          Value::U8(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::U16(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::U32(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::U64(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::U128(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::I8(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::I16(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::I32(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::I64(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::I128(v) => Some(new_ref(*v.borrow() as $target_type)),
          Value::F32(v) => Some(new_ref((*v.borrow()).0 as $target_type)),
          Value::F64(v) => Some(new_ref((*v.borrow()).0 as $target_type)),
          Value::MutableReference(val) => val.borrow().[<as_ $target_type>](),
          _ => None,
        }
      }
    }
  };
}

// Value ----------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub enum ValueKind {
  U8, U16, U32, U64, U128, I8, I16, I32, I64, I128, F32, F64, 
  String, Bool, Matrix(Box<ValueKind>,(usize,usize)), Enum(u64), Set, Map, Record, Table, Tuple, Id, Index, Reference(Box<ValueKind>), Atom(u64), Empty, Any
}

impl ValueKind {
  pub fn is_compatible(k1: ValueKind, k2: ValueKind) -> bool {
    match k1 {
      ValueKind::Reference(x) => {
        ValueKind::is_compatible(*x,k2)
      }
      ValueKind::Matrix(x,_) => {
        *x == k2
      }
      x => x == k2,
    }
  }
}

#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Value {
  U8(Ref<u8>),
  U16(Ref<u16>),
  U32(Ref<u32>),
  U64(Ref<u64>),
  U128(Ref<u128>),
  I8(Ref<i8>),
  I16(Ref<i16>),
  I32(Ref<i32>),
  I64(Ref<i64>),
  I128(Ref<i128>),
  F32(Ref<F32>),
  F64(Ref<F64>),
  String(String),
  Bool(Ref<bool>),
  Atom(u64),
  MatrixIndex(Matrix<usize>),
  MatrixBool(Matrix<bool>),
  MatrixU8(Matrix<u8>),
  MatrixU16(Matrix<u16>),
  MatrixU32(Matrix<u32>),
  MatrixU64(Matrix<u64>),
  MatrixU128(Matrix<u128>),
  MatrixI8(Matrix<i8>),
  MatrixI16(Matrix<i16>),
  MatrixI32(Matrix<i32>),
  MatrixI64(Matrix<i64>),
  MatrixI128(Matrix<i128>),
  MatrixF32(Matrix<F32>),
  MatrixF64(Matrix<F64>),
  MatrixValue(Matrix<Value>),
  Set(MechSet),
  Map(MechMap),
  Record(MechMap),
  Table(MechTable),
  Tuple(MechTuple),
  Enum(Box<MechEnum>),
  Id(u64),
  Index(Ref<usize>),
  MutableReference(MutableReference),
  Kind(ValueKind),
  IndexAll,
  Empty
}

impl Hash for Value {
  fn hash<H: Hasher>(&self, state: &mut H) {
    match self {
      Value::Id(x)   => x.hash(state),
      Value::Kind(x) => x.hash(state),
      Value::U8(x)   => x.borrow().hash(state),
      Value::U16(x)  => x.borrow().hash(state),
      Value::U32(x)  => x.borrow().hash(state),
      Value::U64(x)  => x.borrow().hash(state),
      Value::U128(x) => x.borrow().hash(state),
      Value::I8(x)   => x.borrow().hash(state),
      Value::I16(x)  => x.borrow().hash(state),
      Value::I32(x)  => x.borrow().hash(state),
      Value::I64(x)  => x.borrow().hash(state),
      Value::I128(x) => x.borrow().hash(state),
      Value::F32(x)  => x.borrow().hash(state),
      Value::F64(x)  => x.borrow().hash(state),
      Value::Index(x)=> x.borrow().hash(state),
      Value::Bool(x) => x.borrow().hash(state),
      Value::Atom(x) => x.hash(state),
      Value::Set(x)  => x.hash(state),
      Value::Map(x)  => x.hash(state),
      Value::Table(x) => x.hash(state),
      Value::Tuple(x) => x.hash(state),
      Value::Record(x) => x.hash(state),
      Value::Enum(x) => x.hash(state),
      Value::String(x) => x.hash(state),
      Value::MatrixBool(x) => x.hash(state),
      Value::MatrixIndex(x) => x.hash(state),
      Value::MatrixU8(x)   => x.hash(state),
      Value::MatrixU16(x)  => x.hash(state),
      Value::MatrixU32(x)  => x.hash(state),
      Value::MatrixU64(x)  => x.hash(state),
      Value::MatrixU128(x) => x.hash(state),
      Value::MatrixI8(x)   => x.hash(state),
      Value::MatrixI16(x)  => x.hash(state),
      Value::MatrixI32(x)  => x.hash(state),
      Value::MatrixI64(x)  => x.hash(state),
      Value::MatrixI128(x) => x.hash(state),
      Value::MatrixF32(x)  => x.hash(state),
      Value::MatrixF64(x)  => x.hash(state),
      Value::MatrixValue(x)  => x.hash(state),
      Value::MutableReference(x) => x.borrow().hash(state),
      Value::Empty => Value::Empty.hash(state),
      Value::IndexAll => Value::IndexAll.hash(state),
    }
  }
}

impl Value {

  pub fn pretty_print(&self) -> String {
    let mut builder = Builder::default();
    match self {
      Value::U8(x)   => {builder.push_record(vec!["u8"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::U16(x)  => {builder.push_record(vec!["u16"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::U32(x)  => {builder.push_record(vec!["u32"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::U64(x)  => {builder.push_record(vec!["u64"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::U128(x) => {builder.push_record(vec!["u128"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::I8(x)   => {builder.push_record(vec!["i8"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::I16(x)  => {builder.push_record(vec!["i16"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::I32(x)  => {builder.push_record(vec!["i32"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::I64(x)  => {builder.push_record(vec!["i64"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::I128(x) => {builder.push_record(vec!["i128"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::F32(x)  => {builder.push_record(vec!["f32"]); builder.push_record(vec![format!("{:?}",x.borrow().0)]);},
      Value::F64(x)  => {builder.push_record(vec!["f64"]); builder.push_record(vec![format!("{:?}",x.borrow().0)]);},
      Value::Bool(x) => {builder.push_record(vec!["bool"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::Index(x)  => {builder.push_record(vec!["ix"]); builder.push_record(vec![format!("{:?}",x.borrow())]);},
      Value::Atom(x) => {builder.push_record(vec!["atom"]); builder.push_record(vec![format!("{:?}",x)]);},
      Value::Set(x)  => builder.push_record(vec![format!("{:?}",x)]),
      Value::Map(x)  => {return x.pretty_print();}
      Value::String(x) => {builder.push_record(vec!["string"]); builder.push_record(vec![x])},
      Value::Table(x)  => {return x.pretty_print();},
      Value::Tuple(x)  => {return x.pretty_print();},
      Value::Record(x) => {return x.pretty_print();},
      Value::Enum(x) => {return x.pretty_print();},
      Value::MatrixIndex(x) => {return x.pretty_print();}
      Value::MatrixBool(x) => {return x.pretty_print();}
      Value::MatrixU8(x)   => {return x.pretty_print();},
      Value::MatrixU16(x)  => {return x.pretty_print();},
      Value::MatrixU32(x)  => {return x.pretty_print();},
      Value::MatrixU64(x)  => {return x.pretty_print();},
      Value::MatrixU128(x) => {return x.pretty_print();},
      Value::MatrixI8(x)   => {return x.pretty_print();},
      Value::MatrixI16(x)  => {return x.pretty_print();},
      Value::MatrixI32(x)  => {return x.pretty_print();},
      Value::MatrixI64(x)  => {return x.pretty_print();},
      Value::MatrixI128(x) => {return x.pretty_print();},
      Value::MatrixF32(x)  => {return x.pretty_print();},
      Value::MatrixF64(x)  => {return x.pretty_print();},
      Value::MatrixValue(x)  => {return x.pretty_print();},
      Value::MutableReference(x) => {return x.borrow().pretty_print();},
      Value::Empty => builder.push_record(vec!["_"]),
      Value::IndexAll => builder.push_record(vec![":"]),
      Value::Id(x) => builder.push_record(vec![format!("{:?}",humanize(x))]),
      Value::Kind(x) => builder.push_record(vec![format!("{:?}",x)]),
    };
    let mut table = builder.build();
    table.with(Style::modern());
    format!("{table}")
  }

  pub fn shape(&self) -> Vec<usize> {
    match self {
      Value::U8(x) => vec![1,1],
      Value::U16(x) => vec![1,1],
      Value::U32(x) => vec![1,1],
      Value::U64(x) => vec![1,1],
      Value::U128(x) => vec![1,1],
      Value::I8(x) => vec![1,1],
      Value::I16(x) => vec![1,1],
      Value::I32(x) => vec![1,1],
      Value::I64(x) => vec![1,1],
      Value::I128(x) => vec![1,1],
      Value::F32(x) => vec![1,1],
      Value::F64(x) => vec![1,1],
      Value::Index(x) => vec![1,1],
      Value::String(x) => vec![1,1],
      Value::Bool(x) => vec![1,1],
      Value::Atom(x) => vec![1,1],
      Value::MatrixIndex(x) => x.shape(),
      Value::MatrixBool(x) => x.shape(),
      Value::MatrixU8(x) => x.shape(),
      Value::MatrixU16(x) => x.shape(),
      Value::MatrixU32(x) => x.shape(),
      Value::MatrixU64(x) => x.shape(),
      Value::MatrixU128(x) => x.shape(),
      Value::MatrixI8(x) => x.shape(),
      Value::MatrixI16(x) => x.shape(),
      Value::MatrixI32(x) => x.shape(),
      Value::MatrixI64(x) => x.shape(),
      Value::MatrixI128(x) => x.shape(),
      Value::MatrixF32(x) => x.shape(),
      Value::MatrixF64(x) => x.shape(),
      Value::MatrixValue(x) => x.shape(),
      Value::Enum(x) => vec![1,1],
      Value::Table(x) => x.shape(),
      Value::Set(x) => vec![1,x.set.len()],
      Value::Map(x) => vec![1,x.map.len()],
      Value::Record(x) => vec![1,x.map.len()],
      Value::Tuple(x) => vec![1,x.size()],
      Value::MutableReference(x) => x.borrow().shape(),
      Value::Empty => vec![0,0],
      Value::IndexAll => vec![0,0],
      Value::Kind(_) => vec![0,0],
      Value::Id(x) => vec![0,0],
    }
  }

  pub fn kind(&self) -> ValueKind {
    match self {
      Value::U8(_) => ValueKind::U8,
      Value::U16(_) => ValueKind::U16,
      Value::U32(_) => ValueKind::U32,
      Value::U64(_) => ValueKind::U64,
      Value::U128(_) => ValueKind::U128,
      Value::I8(_) => ValueKind::I8,
      Value::I16(_) => ValueKind::I16,
      Value::I32(_) => ValueKind::I32,
      Value::I64(_) => ValueKind::I64,
      Value::I128(_) => ValueKind::I128,
      Value::F32(_) => ValueKind::F32,
      Value::F64(_) => ValueKind::F64,
      Value::String(_) => ValueKind::String,
      Value::Bool(_) => ValueKind::Bool,
      Value::Atom(x) => ValueKind::Atom(*x),
      Value::MatrixIndex(x) => ValueKind::Matrix(Box::new(ValueKind::Index),(x.shape()[0],x.shape()[1])),
      Value::MatrixBool(x) => ValueKind::Matrix(Box::new(ValueKind::Bool),(x.shape()[0],x.shape()[1])),
      Value::MatrixU8(x) => ValueKind::Matrix(Box::new(ValueKind::U8),(x.shape()[0],x.shape()[1])),
      Value::MatrixU16(x) => ValueKind::Matrix(Box::new(ValueKind::U16),(x.shape()[0],x.shape()[1])),
      Value::MatrixU32(x) => ValueKind::Matrix(Box::new(ValueKind::U32),(x.shape()[0],x.shape()[1])),
      Value::MatrixU64(x) => ValueKind::Matrix(Box::new(ValueKind::U64),(x.shape()[0],x.shape()[1])),
      Value::MatrixU128(x) => ValueKind::Matrix(Box::new(ValueKind::U128),(x.shape()[0],x.shape()[1])),
      Value::MatrixI8(x) => ValueKind::Matrix(Box::new(ValueKind::I8),(x.shape()[0],x.shape()[1])),
      Value::MatrixI16(x) => ValueKind::Matrix(Box::new(ValueKind::I16),(x.shape()[0],x.shape()[1])),
      Value::MatrixI32(x) => ValueKind::Matrix(Box::new(ValueKind::I32),(x.shape()[0],x.shape()[1])),
      Value::MatrixI64(x) => ValueKind::Matrix(Box::new(ValueKind::I64),(x.shape()[0],x.shape()[1])),
      Value::MatrixI128(x) => ValueKind::Matrix(Box::new(ValueKind::U128,),(x.shape()[0],x.shape()[1])),
      Value::MatrixF32(x) => ValueKind::Matrix(Box::new(ValueKind::F32),(x.shape()[0],x.shape()[1])),
      Value::MatrixF64(x) => ValueKind::Matrix(Box::new(ValueKind::F64),(x.shape()[0],x.shape()[1])),
      Value::MatrixValue(x) => ValueKind::Matrix(Box::new(ValueKind::Any),(x.shape()[0],x.shape()[1])),
      Value::Table(x) => ValueKind::Table,
      Value::Set(x) => ValueKind::Set,
      Value::Map(x) => ValueKind::Map,
      Value::Record(x) => ValueKind::Record,
      Value::Tuple(x) => ValueKind::Tuple,
      Value::Enum(x) => ValueKind::Enum(x.id),
      Value::MutableReference(x) => ValueKind::Reference(Box::new(x.borrow().kind())),
      Value::Empty => ValueKind::Empty,
      Value::IndexAll => ValueKind::Empty,
      Value::Id(x) => ValueKind::Id,
      Value::Index(x) => ValueKind::Index,
      Value::Kind(x) => x.clone(),
    }
  }

  pub fn is_scalar(&self) -> bool {
    match self {
      Value::U8(_)  | Value::U16(_) | Value::U32(_) | Value::U64(_) | Value::U128(_) | 
      Value::I8(_)  | Value::I16(_) | Value::I32(_) | Value::I64(_) | Value::I128(_) | 
      Value::F32(_) | Value::F64(_) | Value::String(_)  | Value::Bool(_) | Value::Atom(_) => true,
      _ => todo!(), 
      /*Value::MatrixIndex(x) => ValueKind::Matrix(Box::new(ValueKind::Index),(x.shape()[0],x.shape()[1])),
      Value::MatrixBool(x) => ValueKind::Matrix(Box::new(ValueKind::Bool),(x.shape()[0],x.shape()[1])),
      Value::MatrixU8(x) => ValueKind::Matrix(Box::new(ValueKind::U8),(x.shape()[0],x.shape()[1])),
      Value::MatrixU16(x) => ValueKind::Matrix(Box::new(ValueKind::U16),(x.shape()[0],x.shape()[1])),
      Value::MatrixU32(x) => ValueKind::Matrix(Box::new(ValueKind::U32),(x.shape()[0],x.shape()[1])),
      Value::MatrixU64(x) => ValueKind::Matrix(Box::new(ValueKind::U64),(x.shape()[0],x.shape()[1])),
      Value::MatrixU128(x) => ValueKind::Matrix(Box::new(ValueKind::U128),(x.shape()[0],x.shape()[1])),
      Value::MatrixI8(x) => ValueKind::Matrix(Box::new(ValueKind::I8),(x.shape()[0],x.shape()[1])),
      Value::MatrixI16(x) => ValueKind::Matrix(Box::new(ValueKind::I16),(x.shape()[0],x.shape()[1])),
      Value::MatrixI32(x) => ValueKind::Matrix(Box::new(ValueKind::I32),(x.shape()[0],x.shape()[1])),
      Value::MatrixI64(x) => ValueKind::Matrix(Box::new(ValueKind::I64),(x.shape()[0],x.shape()[1])),
      Value::MatrixI128(x) => ValueKind::Matrix(Box::new(ValueKind::U128,),(x.shape()[0],x.shape()[1])),
      Value::MatrixF32(x) => ValueKind::Matrix(Box::new(ValueKind::F32),(x.shape()[0],x.shape()[1])),
      Value::MatrixF64(x) => ValueKind::Matrix(Box::new(ValueKind::F64),(x.shape()[0],x.shape()[1])),
      Value::MatrixValue(x) => ValueKind::Matrix(Box::new(ValueKind::Any),(x.shape()[0],x.shape()[1])),
      Value::Table(x) => ValueKind::Table,
      Value::Set(x) => ValueKind::Set,
      Value::Map(x) => ValueKind::Map,
      Value::Record(x) => ValueKind::Record,
      Value::Tuple(x) => ValueKind::Tuple,
      Value::Enum(x) => ValueKind::Enum(x.id),
      Value::MutableReference(x) => ValueKind::Reference,
      Value::Empty => ValueKind::Empty,
      Value::IndexAll => ValueKind::Empty,
      Value::Id(x) => ValueKind::Id,
      Value::Index(x) => ValueKind::Index,
      Value::Kind(x) => x.clone(),*/
    }
  }

  pub fn as_bool(&self) -> Option<Ref<bool>> {if let Value::Bool(v) = self { Some(v.clone()) } else if let Value::MutableReference(val) = self { val.borrow().as_bool() } else { None }}
  
  impl_as_type!(i8);
  impl_as_type!(i16);
  impl_as_type!(i32);
  impl_as_type!(i64);
  impl_as_type!(i128);
  impl_as_type!(u8);
  impl_as_type!(u16);
  impl_as_type!(u32);
  impl_as_type!(u64);
  impl_as_type!(u128);

  pub fn as_f32(&self) -> Option<Ref<F32>> {
    match self {
      Value::U8(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::U16(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::U32(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::U64(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::U128(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::I8(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::I16(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::I32(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::I64(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::I128(v) => Some(new_ref(F32::new(*v.borrow() as f32))),
      Value::F32(v) => Some(new_ref(F32::new((*v.borrow()).0 as f32))),
      Value::F64(v) => Some(new_ref(F32::new((*v.borrow()).0 as f32))),
      Value::MutableReference(val) => val.borrow().as_f32(),
      _ => None,
    }
  }

  pub fn as_f64(&self) -> Option<Ref<F64>> {
    match self {
      Value::U8(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::U16(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::U32(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::U64(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::U128(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::I8(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::I16(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::I32(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::I64(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::I128(v) => Some(new_ref(F64::new(*v.borrow() as f64))),
      Value::F64(v) => Some(new_ref(F64::new((*v.borrow()).0 as f64))),
      Value::F64(v) => Some(new_ref(F64::new((*v.borrow()).0 as f64))),
      Value::MutableReference(val) => val.borrow().as_f64(),
      _ => None,
    }
  }

  pub fn as_vecbool(&self)   -> Option<Vec<bool>>  {if let Value::MatrixBool(v)  = self { Some(v.as_vec()) } else if let Value::Bool(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecbool()  } else { None }}
  pub fn as_vecf64(&self)   -> Option<Vec<F64>>  {if let Value::MatrixF64(v)  = self { Some(v.as_vec()) } else if let Value::F64(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecf64()  } else { None }}
  pub fn as_vecf32(&self)   -> Option<Vec<F32>>  {if let Value::MatrixF32(v)  = self { Some(v.as_vec()) } else if let Value::F32(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecf32()  } else { None }}

  pub fn as_vecu8(&self)   -> Option<Vec<u8>>  {if let Value::MatrixU8(v)  = self { Some(v.as_vec()) } else if let Value::U8(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecu8()  } else { None }}
  pub fn as_vecu16(&self)   -> Option<Vec<u16>>  {if let Value::MatrixU16(v)  = self { Some(v.as_vec()) } else if let Value::U16(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecu16()  } else { None }}
  pub fn as_vecu32(&self)   -> Option<Vec<u32>>  {if let Value::MatrixU32(v)  = self { Some(v.as_vec()) } else if let Value::U32(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecu32()  } else { None }}
  pub fn as_vecu64(&self)   -> Option<Vec<u64>>  {if let Value::MatrixU64(v)  = self { Some(v.as_vec()) } else if let Value::U64(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecu64()  } else { None }}
  pub fn as_vecu128(&self)   -> Option<Vec<u128>>  {if let Value::MatrixU128(v)  = self { Some(v.as_vec()) } else if let Value::U128(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_vecu128()  } else { None }}

  pub fn as_veci8(&self)   -> Option<Vec<i8>>  {if let Value::MatrixI8(v)  = self { Some(v.as_vec()) } else if let Value::I8(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_veci8()  } else { None }}
  pub fn as_veci16(&self)   -> Option<Vec<i16>>  {if let Value::MatrixI16(v)  = self { Some(v.as_vec()) } else if let Value::I16(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_veci16()  } else { None }}
  pub fn as_veci32(&self)   -> Option<Vec<i32>>  {if let Value::MatrixI32(v)  = self { Some(v.as_vec()) } else if let Value::I32(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_veci32()  } else { None }}
  pub fn as_veci64(&self)   -> Option<Vec<i64>>  {if let Value::MatrixI64(v)  = self { Some(v.as_vec()) } else if let Value::I64(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_veci64()  } else { None }}
  pub fn as_veci128(&self)   -> Option<Vec<i128>>  {if let Value::MatrixI128(v)  = self { Some(v.as_vec()) } else if let Value::I128(v) = self { Some(vec![v.borrow().clone()]) } else if let Value::MutableReference(val) = self { val.borrow().as_veci128()  } else { None }}

  pub fn as_vecusize(&self) -> Option<Vec<usize>> {
    match self {
      Value::MatrixIndex(v) => Some(v.as_vec()),
      Value::MatrixI64(v) => Some(v.as_vec().iter().map(|x| *x as usize).collect::<Vec<usize>>()),
      Value::MatrixF64(v) => Some(v.as_vec().iter().map(|x| (*x).0 as usize).collect::<Vec<usize>>()),
      Value::MutableReference(x) => x.borrow().as_vecusize(),
      Value::MatrixBool(_) => None,
      Value::Bool(_) => None,
      _ => todo!(),
    }
  }

  pub fn as_index(&self) -> MResult<Value> {
    match self.as_usize() {      
      Some(ix) => Ok(Value::Index(new_ref(ix))),
      None => match self.as_vecusize() {
        Some(x) => {
          let shape = self.shape();
          let out = Value::MatrixIndex(usize::to_matrix(x, shape[0] * shape[1],1 ));
          Ok(out)
        },
        None => match self.as_vecbool() {
          Some(x) => {
            let shape = self.shape();
            let out = match (shape[0], shape[1]) {
              (1,1) => Value::Bool(new_ref(x[0])),
              (1,n) => Value::MatrixBool(Matrix::DVector(new_ref(DVector::from_vec(x)))),
              (m,1) => Value::MatrixBool(Matrix::DVector(new_ref(DVector::from_vec(x)))),
              (m,n) => Value::MatrixBool(Matrix::DVector(new_ref(DVector::from_vec(x)))),
            };
            Ok(out)
          }
          None => match self.as_bool() {
            Some(x) => Ok(Value::Bool(x)),
            None => Err(MechError {tokens: vec![], msg: file!().to_string(), id: line!(), kind: MechErrorKind::UnhandledIndexKind}),
          }
        }
      }
    }
  }

  pub fn as_usize(&self) -> Option<usize> {
    match self {      
      Value::Index(v) => Some(*v.borrow()),
      Value::U8(v) => Some(*v.borrow() as usize),
      Value::U16(v) => Some(*v.borrow() as usize),
      Value::U32(v) => Some(*v.borrow() as usize),
      Value::U64(v) => Some(*v.borrow() as usize),
      Value::U128(v) => Some(*v.borrow() as usize),
      Value::I8(v) => Some(*v.borrow() as usize),
      Value::I16(v) => Some(*v.borrow() as usize),
      Value::I32(v) => Some(*v.borrow() as usize),
      Value::I64(v) => Some(*v.borrow() as usize),
      Value::I128(v) => Some(*v.borrow() as usize),
      Value::F32(v) => Some((*v.borrow()).0 as usize),
      Value::F64(v) => Some((*v.borrow()).0 as usize),
      Value::MutableReference(v) => v.borrow().as_usize(),
      _ => None,
    }
  }

}

pub trait ToIndex {
  fn to_index(&self) -> Value;
}

impl ToIndex for Ref<Vec<i64>> { fn to_index(&self) -> Value { (*self.borrow()).iter().map(|x| *x as usize).collect::<Vec<usize>>().to_value() } }

pub trait ToValue {
  fn to_value(&self) -> Value;
}

impl ToValue for Vec<usize> {
  fn to_value(&self) -> Value {
    match self.len() {
      1 => Value::Index(new_ref(self[0].clone())),
      //2 => Value::MatrixIndex(Matrix::RowVector2(new_ref(RowVector2::from_vec(self.clone())))),
      //3 => Value::MatrixIndex(Matrix::RowVector3(new_ref(RowVector3::from_vec(self.clone())))),
      //4 => Value::MatrixIndex(Matrix::RowVector4(new_ref(RowVector4::from_vec(self.clone())))),
      n => Value::MatrixIndex(Matrix::DVector(new_ref(DVector::from_vec(self.clone())))),
    }
  }
}

impl ToValue for Ref<usize> { fn to_value(&self) -> Value { Value::Index(self.clone()) } }
impl ToValue for Ref<u8>    { fn to_value(&self) -> Value { Value::U8(self.clone())    } }
impl ToValue for Ref<u16>   { fn to_value(&self) -> Value { Value::U16(self.clone())   } }
impl ToValue for Ref<u32>   { fn to_value(&self) -> Value { Value::U32(self.clone())   } }
impl ToValue for Ref<u64>   { fn to_value(&self) -> Value { Value::U64(self.clone())   } }
impl ToValue for Ref<u128>  { fn to_value(&self) -> Value { Value::U128(self.clone())  } }
impl ToValue for Ref<i8>    { fn to_value(&self) -> Value { Value::I8(self.clone())    } }
impl ToValue for Ref<i16>   { fn to_value(&self) -> Value { Value::I16(self.clone())   } }
impl ToValue for Ref<i32>   { fn to_value(&self) -> Value { Value::I32(self.clone())   } }
impl ToValue for Ref<i64>   { fn to_value(&self) -> Value { Value::I64(self.clone())   } }
impl ToValue for Ref<i128>  { fn to_value(&self) -> Value { Value::I128(self.clone())  } }
impl ToValue for Ref<F32>   { fn to_value(&self) -> Value { Value::F32(self.clone())   } }
impl ToValue for Ref<F64>   { fn to_value(&self) -> Value { Value::F64(self.clone())   } }
impl ToValue for Ref<bool>  { fn to_value(&self) -> Value { Value::Bool(self.clone())  } }

macro_rules! to_value_matrix {
  ($($nd_matrix_kind:ident, $matrix_kind:ident, $base_type:ty),+ $(,)?) => {
    $(
      impl ToValue for Ref<$nd_matrix_kind<$base_type>> {
        fn to_value(&self) -> Value {
          Value::$matrix_kind(Matrix::<$base_type>::$nd_matrix_kind(self.clone()))
        }
      }
    )+
  };}

macro_rules! impl_to_value_matrix {
  ($matrix_kind:ident) => {
    to_value_matrix!(
      $matrix_kind, MatrixIndex, usize,
      $matrix_kind, MatrixBool,  bool,
      $matrix_kind, MatrixI8,    i8,
      $matrix_kind, MatrixI16,   i16,
      $matrix_kind, MatrixI32,   i32,
      $matrix_kind, MatrixI64,   i64,
      $matrix_kind, MatrixI128,  i128,
      $matrix_kind, MatrixU8,    u8,
      $matrix_kind, MatrixU16,   u16,
      $matrix_kind, MatrixU32,   u32,
      $matrix_kind, MatrixU64,   u64,
      $matrix_kind, MatrixU128,  u128,
      $matrix_kind, MatrixF32,   F32,
      $matrix_kind, MatrixF64,   F64,
    );
  }
}

impl_to_value_matrix!(Matrix2x3);
impl_to_value_matrix!(Matrix3x2);
impl_to_value_matrix!(Matrix1);
impl_to_value_matrix!(Matrix2);
impl_to_value_matrix!(Matrix3);
impl_to_value_matrix!(Matrix4);
impl_to_value_matrix!(Vector2);
impl_to_value_matrix!(Vector3);
impl_to_value_matrix!(Vector4);
impl_to_value_matrix!(RowVector2);
impl_to_value_matrix!(RowVector3);
impl_to_value_matrix!(RowVector4);
impl_to_value_matrix!(RowDVector);
impl_to_value_matrix!(DVector);
impl_to_value_matrix!(DMatrix);

// Set --------------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct MechSet {
  pub set: IndexSet<Value>,
}

impl MechSet {
  pub fn from_vec(vec: Vec<Value>) -> MechSet {
    let mut set = IndexSet::new();
    for v in vec {
      set.insert(v);
    }
    MechSet{set}
  }
}

impl Hash for MechSet {
  fn hash<H: Hasher>(&self, state: &mut H) {
    for x in self.set.iter() {
      x.hash(state)
    }
  }
}

// Map ------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct MechMap {
  pub map: IndexMap<Value,Value>,
}

impl MechMap {

  pub fn pretty_print(&self) -> String {
    let mut builder = Builder::default();
    let mut element_strings = vec![];
    let mut key_strings = vec![];
    for (k,v) in self.map.iter() {
      element_strings.push(v.pretty_print());
      key_strings.push(k.pretty_print());
    }    
    builder.push_record(key_strings);
    builder.push_record(element_strings);
    let mut table = builder.build();
    table.with(Style::modern());
    format!("{table}")
  }

  pub fn from_vec(vec: Vec<(Value,Value)>) -> MechMap {
    let mut map = IndexMap::new();
    for (k,v) in vec {
      map.insert(k,v);
    }
    MechMap{map}
  }
}

impl Hash for MechMap {
  fn hash<H: Hasher>(&self, state: &mut H) {
    for x in self.map.iter() {
      x.hash(state)
    }
  }
}

// Table ------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct MechTable {
  pub rows: usize,
  pub cols: usize,
  pub data: IndexMap<Value,(ValueKind,Matrix<Value>)>,
}

impl MechTable {

  pub fn pretty_print(&self) -> String {
    let mut builder = Builder::default();
    for (k,(knd,val)) in &self.data {
      let mut col_string = vec![k.pretty_print(), val.pretty_print()];
      builder.push_column(col_string);
    }
    let mut table = builder.build();
    table.with(Style::modern());
    format!("{table}")
  }

  pub fn shape(&self) -> Vec<usize> {
    vec![self.rows,self.cols]
  }
}

impl Hash for MechTable {
  fn hash<H: Hasher>(&self, state: &mut H) {
    for (k,(knd,val)) in self.data.iter() {
      k.hash(state);
      knd.hash(state);
      val.hash(state);
    }
  }
}

// Tuple ----------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct MechTuple {
  pub elements: Vec<Box<Value>>
}

impl MechTuple {

  pub fn pretty_print(&self) -> String {
    let mut builder = Builder::default();
    let string_elements: Vec<String> = self.elements.iter().map(|e| e.pretty_print()).collect::<Vec<String>>();
    builder.push_record(string_elements);
    let mut table = builder.build();
    table.with(Style::modern());
    format!("{table}")
  }

  pub fn from_vec(elements: Vec<Value>) -> Self {
    MechTuple{elements: elements.iter().map(|m| Box::new(m.clone())).collect::<Vec<Box<Value>>>()}
  }

  pub fn size(&self) -> usize {
    self.elements.len()
  }

}

impl Hash for MechTuple {
  fn hash<H: Hasher>(&self, state: &mut H) {
    for x in self.elements.iter() {
        x.hash(state)
    }
  }
}

// Enum -----------------------------------------------------------------------

#[derive(Clone, Debug, PartialEq, Eq)]
pub struct MechEnum {
  pub id: u64,
  pub variants: Vec<(u64, Option<Value>)>,
}

impl MechEnum {

  pub fn pretty_print(&self) -> String {
    let mut builder = Builder::default();
    let string_elements: Vec<String> = vec![format!("{}{:?}",self.id,self.variants)];
    builder.push_record(string_elements);
    let mut table = builder.build();
    table.with(Style::modern());
    format!("{table}")
  }

}

impl Hash for MechEnum {
  fn hash<H: Hasher>(&self, state: &mut H) {
    self.id.hash(state);
    self.variants.hash(state);
  }
}