refactor(users/glittershark): Rename to grfn r/2485

Rename my //users directory and all places that refer to glittershark to
grfn, including nix references and documentation.

This may require some extra attention inside of gerrit's database after
it lands to allow me to actually push things.

Change-Id: I4728b7ec2c60024392c1c1fa6e0d4a59b3e266fa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2933
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: glittershark <grfn@gws.fyi>

2 files changed, 0 insertions, 767 deletions

diff --git a/users/glittershark/achilles/src/ast/hir.rs b/users/glittershark/achilles/src/ast/hir.rs
deleted file mode 100644
index 0d145d620bef..000000000000
--- a/users/glittershark/achilles/src/ast/hir.rs
+++ /dev/null
@@ -1,320 +0,0 @@
-use std::collections::HashMap;
-
-use itertools::Itertools;
-
-use super::{BinaryOperator, Ident, Literal, UnaryOperator};
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct Binding<'a, T> {
-    pub ident: Ident<'a>,
-    pub type_: T,
-    pub body: Expr<'a, T>,
-}
-
-impl<'a, T> Binding<'a, T> {
-    fn to_owned(&self) -> Binding<'static, T>
-    where
-        T: Clone,
-    {
-        Binding {
-            ident: self.ident.to_owned(),
-            type_: self.type_.clone(),
-            body: self.body.to_owned(),
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum Expr<'a, T> {
-    Ident(Ident<'a>, T),
-
-    Literal(Literal<'a>, T),
-
-    UnaryOp {
-        op: UnaryOperator,
-        rhs: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    BinaryOp {
-        lhs: Box<Expr<'a, T>>,
-        op: BinaryOperator,
-        rhs: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    Let {
-        bindings: Vec<Binding<'a, T>>,
-        body: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    If {
-        condition: Box<Expr<'a, T>>,
-        then: Box<Expr<'a, T>>,
-        else_: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    Fun {
-        type_args: Vec<Ident<'a>>,
-        args: Vec<(Ident<'a>, T)>,
-        body: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    Call {
-        fun: Box<Expr<'a, T>>,
-        type_args: HashMap<Ident<'a>, T>,
-        args: Vec<Expr<'a, T>>,
-        type_: T,
-    },
-}
-
-impl<'a, T> Expr<'a, T> {
-    pub fn type_(&self) -> &T {
-        match self {
-            Expr::Ident(_, t) => t,
-            Expr::Literal(_, t) => t,
-            Expr::UnaryOp { type_, .. } => type_,
-            Expr::BinaryOp { type_, .. } => type_,
-            Expr::Let { type_, .. } => type_,
-            Expr::If { type_, .. } => type_,
-            Expr::Fun { type_, .. } => type_,
-            Expr::Call { type_, .. } => type_,
-        }
-    }
-
-    pub fn traverse_type<F, U, E>(self, f: F) -> Result<Expr<'a, U>, E>
-    where
-        F: Fn(T) -> Result<U, E> + Clone,
-    {
-        match self {
-            Expr::Ident(id, t) => Ok(Expr::Ident(id, f(t)?)),
-            Expr::Literal(lit, t) => Ok(Expr::Literal(lit, f(t)?)),
-            Expr::UnaryOp { op, rhs, type_ } => Ok(Expr::UnaryOp {
-                op,
-                rhs: Box::new(rhs.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Expr::BinaryOp {
-                lhs,
-                op,
-                rhs,
-                type_,
-            } => Ok(Expr::BinaryOp {
-                lhs: Box::new(lhs.traverse_type(f.clone())?),
-                op,
-                rhs: Box::new(rhs.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Expr::Let {
-                bindings,
-                body,
-                type_,
-            } => Ok(Expr::Let {
-                bindings: bindings
-                    .into_iter()
-                    .map(|Binding { ident, type_, body }| {
-                        Ok(Binding {
-                            ident,
-                            type_: f(type_)?,
-                            body: body.traverse_type(f.clone())?,
-                        })
-                    })
-                    .collect::<Result<Vec<_>, E>>()?,
-                body: Box::new(body.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Expr::If {
-                condition,
-                then,
-                else_,
-                type_,
-            } => Ok(Expr::If {
-                condition: Box::new(condition.traverse_type(f.clone())?),
-                then: Box::new(then.traverse_type(f.clone())?),
-                else_: Box::new(else_.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Expr::Fun {
-                args,
-                type_args,
-                body,
-                type_,
-            } => Ok(Expr::Fun {
-                args: args
-                    .into_iter()
-                    .map(|(id, t)| Ok((id, f.clone()(t)?)))
-                    .collect::<Result<Vec<_>, E>>()?,
-                type_args,
-                body: Box::new(body.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Expr::Call {
-                fun,
-                type_args,
-                args,
-                type_,
-            } => Ok(Expr::Call {
-                fun: Box::new(fun.traverse_type(f.clone())?),
-                type_args: type_args
-                    .into_iter()
-                    .map(|(id, ty)| Ok((id, f.clone()(ty)?)))
-                    .collect::<Result<HashMap<_, _>, E>>()?,
-                args: args
-                    .into_iter()
-                    .map(|e| e.traverse_type(f.clone()))
-                    .collect::<Result<Vec<_>, E>>()?,
-                type_: f(type_)?,
-            }),
-        }
-    }
-
-    pub fn to_owned(&self) -> Expr<'static, T>
-    where
-        T: Clone,
-    {
-        match self {
-            Expr::Ident(id, t) => Expr::Ident(id.to_owned(), t.clone()),
-            Expr::Literal(lit, t) => Expr::Literal(lit.to_owned(), t.clone()),
-            Expr::UnaryOp { op, rhs, type_ } => Expr::UnaryOp {
-                op: *op,
-                rhs: Box::new((**rhs).to_owned()),
-                type_: type_.clone(),
-            },
-            Expr::BinaryOp {
-                lhs,
-                op,
-                rhs,
-                type_,
-            } => Expr::BinaryOp {
-                lhs: Box::new((**lhs).to_owned()),
-                op: *op,
-                rhs: Box::new((**rhs).to_owned()),
-                type_: type_.clone(),
-            },
-            Expr::Let {
-                bindings,
-                body,
-                type_,
-            } => Expr::Let {
-                bindings: bindings.iter().map(|b| b.to_owned()).collect(),
-                body: Box::new((**body).to_owned()),
-                type_: type_.clone(),
-            },
-            Expr::If {
-                condition,
-                then,
-                else_,
-                type_,
-            } => Expr::If {
-                condition: Box::new((**condition).to_owned()),
-                then: Box::new((**then).to_owned()),
-                else_: Box::new((**else_).to_owned()),
-                type_: type_.clone(),
-            },
-            Expr::Fun {
-                args,
-                type_args,
-                body,
-                type_,
-            } => Expr::Fun {
-                args: args
-                    .iter()
-                    .map(|(id, t)| (id.to_owned(), t.clone()))
-                    .collect(),
-                type_args: type_args.iter().map(|arg| arg.to_owned()).collect(),
-                body: Box::new((**body).to_owned()),
-                type_: type_.clone(),
-            },
-            Expr::Call {
-                fun,
-                type_args,
-                args,
-                type_,
-            } => Expr::Call {
-                fun: Box::new((**fun).to_owned()),
-                type_args: type_args
-                    .iter()
-                    .map(|(id, t)| (id.to_owned(), t.clone()))
-                    .collect(),
-                args: args.iter().map(|e| e.to_owned()).collect(),
-                type_: type_.clone(),
-            },
-        }
-    }
-}
-
-#[derive(Debug, Clone, PartialEq, Eq)]
-pub enum Decl<'a, T> {
-    Fun {
-        name: Ident<'a>,
-        type_args: Vec<Ident<'a>>,
-        args: Vec<(Ident<'a>, T)>,
-        body: Box<Expr<'a, T>>,
-        type_: T,
-    },
-
-    Extern {
-        name: Ident<'a>,
-        arg_types: Vec<T>,
-        ret_type: T,
-    },
-}
-
-impl<'a, T> Decl<'a, T> {
-    pub fn name(&self) -> &Ident<'a> {
-        match self {
-            Decl::Fun { name, .. } => name,
-            Decl::Extern { name, .. } => name,
-        }
-    }
-
-    pub fn set_name(&mut self, new_name: Ident<'a>) {
-        match self {
-            Decl::Fun { name, .. } => *name = new_name,
-            Decl::Extern { name, .. } => *name = new_name,
-        }
-    }
-
-    pub fn type_(&self) -> Option<&T> {
-        match self {
-            Decl::Fun { type_, .. } => Some(type_),
-            Decl::Extern { .. } => None,
-        }
-    }
-
-    pub fn traverse_type<F, U, E>(self, f: F) -> Result<Decl<'a, U>, E>
-    where
-        F: Fn(T) -> Result<U, E> + Clone,
-    {
-        match self {
-            Decl::Fun {
-                name,
-                type_args,
-                args,
-                body,
-                type_,
-            } => Ok(Decl::Fun {
-                name,
-                type_args,
-                args: args
-                    .into_iter()
-                    .map(|(id, t)| Ok((id, f(t)?)))
-                    .try_collect()?,
-                body: Box::new(body.traverse_type(f.clone())?),
-                type_: f(type_)?,
-            }),
-            Decl::Extern {
-                name,
-                arg_types,
-                ret_type,
-            } => Ok(Decl::Extern {
-                name,
-                arg_types: arg_types.into_iter().map(f.clone()).try_collect()?,
-                ret_type: f(ret_type)?,
-            }),
-        }
-    }
-}
diff --git a/users/glittershark/achilles/src/ast/mod.rs b/users/glittershark/achilles/src/ast/mod.rs
deleted file mode 100644
index 7dc2de895709..000000000000
--- a/users/glittershark/achilles/src/ast/mod.rs
+++ /dev/null
@@ -1,447 +0,0 @@
-pub(crate) mod hir;
-
-use std::borrow::Cow;
-use std::collections::HashMap;
-use std::convert::TryFrom;
-use std::fmt::{self, Display, Formatter};
-
-use itertools::Itertools;
-
-#[derive(Debug, PartialEq, Eq)]
-pub struct InvalidIdentifier<'a>(Cow<'a, str>);
-
-#[derive(Debug, PartialEq, Eq, Hash, Clone)]
-pub struct Ident<'a>(pub Cow<'a, str>);
-
-impl<'a> From<&'a Ident<'a>> for &'a str {
-    fn from(id: &'a Ident<'a>) -> Self {
-        id.0.as_ref()
-    }
-}
-
-impl<'a> Display for Ident<'a> {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "{}", self.0)
-    }
-}
-
-impl<'a> Ident<'a> {
-    pub fn to_owned(&self) -> Ident<'static> {
-        Ident(Cow::Owned(self.0.clone().into_owned()))
-    }
-
-    /// Construct an identifier from a &str without checking that it's a valid identifier
-    pub fn from_str_unchecked(s: &'a str) -> Self {
-        debug_assert!(is_valid_identifier(s));
-        Self(Cow::Borrowed(s))
-    }
-
-    pub fn from_string_unchecked(s: String) -> Self {
-        debug_assert!(is_valid_identifier(&s));
-        Self(Cow::Owned(s))
-    }
-}
-
-pub fn is_valid_identifier<S>(s: &S) -> bool
-where
-    S: AsRef<str> + ?Sized,
-{
-    s.as_ref()
-        .chars()
-        .any(|c| !c.is_alphanumeric() || !"_".contains(c))
-}
-
-impl<'a> TryFrom<&'a str> for Ident<'a> {
-    type Error = InvalidIdentifier<'a>;
-
-    fn try_from(s: &'a str) -> Result<Self, Self::Error> {
-        if is_valid_identifier(s) {
-            Ok(Ident(Cow::Borrowed(s)))
-        } else {
-            Err(InvalidIdentifier(Cow::Borrowed(s)))
-        }
-    }
-}
-
-impl<'a> TryFrom<String> for Ident<'a> {
-    type Error = InvalidIdentifier<'static>;
-
-    fn try_from(s: String) -> Result<Self, Self::Error> {
-        if is_valid_identifier(&s) {
-            Ok(Ident(Cow::Owned(s)))
-        } else {
-            Err(InvalidIdentifier(Cow::Owned(s)))
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Copy, Clone)]
-pub enum BinaryOperator {
-    /// `+`
-    Add,
-
-    /// `-`
-    Sub,
-
-    /// `*`
-    Mul,
-
-    /// `/`
-    Div,
-
-    /// `^`
-    Pow,
-
-    /// `==`
-    Equ,
-
-    /// `!=`
-    Neq,
-}
-
-#[derive(Debug, PartialEq, Eq, Copy, Clone)]
-pub enum UnaryOperator {
-    /// !
-    Not,
-
-    /// -
-    Neg,
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum Literal<'a> {
-    Unit,
-    Int(u64),
-    Bool(bool),
-    String(Cow<'a, str>),
-}
-
-impl<'a> Literal<'a> {
-    pub fn to_owned(&self) -> Literal<'static> {
-        match self {
-            Literal::Int(i) => Literal::Int(*i),
-            Literal::Bool(b) => Literal::Bool(*b),
-            Literal::String(s) => Literal::String(Cow::Owned(s.clone().into_owned())),
-            Literal::Unit => Literal::Unit,
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct Binding<'a> {
-    pub ident: Ident<'a>,
-    pub type_: Option<Type<'a>>,
-    pub body: Expr<'a>,
-}
-
-impl<'a> Binding<'a> {
-    fn to_owned(&self) -> Binding<'static> {
-        Binding {
-            ident: self.ident.to_owned(),
-            type_: self.type_.as_ref().map(|t| t.to_owned()),
-            body: self.body.to_owned(),
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum Expr<'a> {
-    Ident(Ident<'a>),
-
-    Literal(Literal<'a>),
-
-    UnaryOp {
-        op: UnaryOperator,
-        rhs: Box<Expr<'a>>,
-    },
-
-    BinaryOp {
-        lhs: Box<Expr<'a>>,
-        op: BinaryOperator,
-        rhs: Box<Expr<'a>>,
-    },
-
-    Let {
-        bindings: Vec<Binding<'a>>,
-        body: Box<Expr<'a>>,
-    },
-
-    If {
-        condition: Box<Expr<'a>>,
-        then: Box<Expr<'a>>,
-        else_: Box<Expr<'a>>,
-    },
-
-    Fun(Box<Fun<'a>>),
-
-    Call {
-        fun: Box<Expr<'a>>,
-        args: Vec<Expr<'a>>,
-    },
-
-    Ascription {
-        expr: Box<Expr<'a>>,
-        type_: Type<'a>,
-    },
-}
-
-impl<'a> Expr<'a> {
-    pub fn to_owned(&self) -> Expr<'static> {
-        match self {
-            Expr::Ident(ref id) => Expr::Ident(id.to_owned()),
-            Expr::Literal(ref lit) => Expr::Literal(lit.to_owned()),
-            Expr::UnaryOp { op, rhs } => Expr::UnaryOp {
-                op: *op,
-                rhs: Box::new((**rhs).to_owned()),
-            },
-            Expr::BinaryOp { lhs, op, rhs } => Expr::BinaryOp {
-                lhs: Box::new((**lhs).to_owned()),
-                op: *op,
-                rhs: Box::new((**rhs).to_owned()),
-            },
-            Expr::Let { bindings, body } => Expr::Let {
-                bindings: bindings.iter().map(|binding| binding.to_owned()).collect(),
-                body: Box::new((**body).to_owned()),
-            },
-            Expr::If {
-                condition,
-                then,
-                else_,
-            } => Expr::If {
-                condition: Box::new((**condition).to_owned()),
-                then: Box::new((**then).to_owned()),
-                else_: Box::new((**else_).to_owned()),
-            },
-            Expr::Fun(fun) => Expr::Fun(Box::new((**fun).to_owned())),
-            Expr::Call { fun, args } => Expr::Call {
-                fun: Box::new((**fun).to_owned()),
-                args: args.iter().map(|arg| arg.to_owned()).collect(),
-            },
-            Expr::Ascription { expr, type_ } => Expr::Ascription {
-                expr: Box::new((**expr).to_owned()),
-                type_: type_.to_owned(),
-            },
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct Arg<'a> {
-    pub ident: Ident<'a>,
-    pub type_: Option<Type<'a>>,
-}
-
-impl<'a> Arg<'a> {
-    pub fn to_owned(&self) -> Arg<'static> {
-        Arg {
-            ident: self.ident.to_owned(),
-            type_: self.type_.as_ref().map(Type::to_owned),
-        }
-    }
-}
-
-impl<'a> TryFrom<&'a str> for Arg<'a> {
-    type Error = <Ident<'a> as TryFrom<&'a str>>::Error;
-
-    fn try_from(value: &'a str) -> Result<Self, Self::Error> {
-        Ok(Arg {
-            ident: Ident::try_from(value)?,
-            type_: None,
-        })
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct Fun<'a> {
-    pub args: Vec<Arg<'a>>,
-    pub body: Expr<'a>,
-}
-
-impl<'a> Fun<'a> {
-    pub fn to_owned(&self) -> Fun<'static> {
-        Fun {
-            args: self.args.iter().map(|arg| arg.to_owned()).collect(),
-            body: self.body.to_owned(),
-        }
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum Decl<'a> {
-    Fun {
-        name: Ident<'a>,
-        body: Fun<'a>,
-    },
-    Ascription {
-        name: Ident<'a>,
-        type_: Type<'a>,
-    },
-    Extern {
-        name: Ident<'a>,
-        type_: FunctionType<'a>,
-    },
-}
-
-////
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub struct FunctionType<'a> {
-    pub args: Vec<Type<'a>>,
-    pub ret: Box<Type<'a>>,
-}
-
-impl<'a> FunctionType<'a> {
-    pub fn to_owned(&self) -> FunctionType<'static> {
-        FunctionType {
-            args: self.args.iter().map(|a| a.to_owned()).collect(),
-            ret: Box::new((*self.ret).to_owned()),
-        }
-    }
-}
-
-impl<'a> Display for FunctionType<'a> {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        write!(f, "fn {} -> {}", self.args.iter().join(", "), self.ret)
-    }
-}
-
-#[derive(Debug, PartialEq, Eq, Clone)]
-pub enum Type<'a> {
-    Int,
-    Float,
-    Bool,
-    CString,
-    Unit,
-    Var(Ident<'a>),
-    Function(FunctionType<'a>),
-}
-
-impl<'a> Type<'a> {
-    pub fn to_owned(&self) -> Type<'static> {
-        match self {
-            Type::Int => Type::Int,
-            Type::Float => Type::Float,
-            Type::Bool => Type::Bool,
-            Type::CString => Type::CString,
-            Type::Unit => Type::Unit,
-            Type::Var(v) => Type::Var(v.to_owned()),
-            Type::Function(f) => Type::Function(f.to_owned()),
-        }
-    }
-
-    pub fn alpha_equiv(&self, other: &Self) -> bool {
-        fn do_alpha_equiv<'a>(
-            substs: &mut HashMap<&'a Ident<'a>, &'a Ident<'a>>,
-            lhs: &'a Type,
-            rhs: &'a Type,
-        ) -> bool {
-            match (lhs, rhs) {
-                (Type::Var(v1), Type::Var(v2)) => substs.entry(v1).or_insert(v2) == &v2,
-                (
-                    Type::Function(FunctionType {
-                        args: args1,
-                        ret: ret1,
-                    }),
-                    Type::Function(FunctionType {
-                        args: args2,
-                        ret: ret2,
-                    }),
-                ) => {
-                    args1.len() == args2.len()
-                        && args1
-                            .iter()
-                            .zip(args2)
-                            .all(|(a1, a2)| do_alpha_equiv(substs, a1, a2))
-                        && do_alpha_equiv(substs, ret1, ret2)
-                }
-                _ => lhs == rhs,
-            }
-        }
-
-        let mut substs = HashMap::new();
-        do_alpha_equiv(&mut substs, self, other)
-    }
-
-    pub fn traverse_type_vars<'b, F>(self, mut f: F) -> Type<'b>
-    where
-        F: FnMut(Ident<'a>) -> Type<'b> + Clone,
-    {
-        match self {
-            Type::Var(tv) => f(tv),
-            Type::Function(FunctionType { args, ret }) => Type::Function(FunctionType {
-                args: args
-                    .into_iter()
-                    .map(|t| t.traverse_type_vars(f.clone()))
-                    .collect(),
-                ret: Box::new(ret.traverse_type_vars(f)),
-            }),
-            Type::Int => Type::Int,
-            Type::Float => Type::Float,
-            Type::Bool => Type::Bool,
-            Type::CString => Type::CString,
-            Type::Unit => Type::Unit,
-        }
-    }
-}
-
-impl<'a> Display for Type<'a> {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        match self {
-            Type::Int => f.write_str("int"),
-            Type::Float => f.write_str("float"),
-            Type::Bool => f.write_str("bool"),
-            Type::CString => f.write_str("cstring"),
-            Type::Unit => f.write_str("()"),
-            Type::Var(v) => v.fmt(f),
-            Type::Function(ft) => ft.fmt(f),
-        }
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    fn type_var(n: &str) -> Type<'static> {
-        Type::Var(Ident::try_from(n.to_owned()).unwrap())
-    }
-
-    mod alpha_equiv {
-        use super::*;
-
-        #[test]
-        fn trivial() {
-            assert!(Type::Int.alpha_equiv(&Type::Int));
-            assert!(!Type::Int.alpha_equiv(&Type::Bool));
-        }
-
-        #[test]
-        fn simple_type_var() {
-            assert!(type_var("a").alpha_equiv(&type_var("b")));
-        }
-
-        #[test]
-        fn function_with_type_vars_equiv() {
-            assert!(Type::Function(FunctionType {
-                args: vec![type_var("a")],
-                ret: Box::new(type_var("b")),
-            })
-            .alpha_equiv(&Type::Function(FunctionType {
-                args: vec![type_var("b")],
-                ret: Box::new(type_var("a")),
-            })))
-        }
-
-        #[test]
-        fn function_with_type_vars_non_equiv() {
-            assert!(!Type::Function(FunctionType {
-                args: vec![type_var("a")],
-                ret: Box::new(type_var("a")),
-            })
-            .alpha_equiv(&Type::Function(FunctionType {
-                args: vec![type_var("b")],
-                ret: Box::new(type_var("a")),
-            })))
-        }
-    }
-}