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>

1 files changed, 0 insertions, 645 deletions

diff --git a/users/glittershark/achilles/src/parser/expr.rs b/users/glittershark/achilles/src/parser/expr.rs
deleted file mode 100644
index 8a28d00984c9..000000000000
--- a/users/glittershark/achilles/src/parser/expr.rs
+++ /dev/null
@@ -1,645 +0,0 @@
-use std::borrow::Cow;
-
-use nom::alt;
-use nom::character::complete::{digit1, multispace0, multispace1};
-use nom::{
-    call, char, complete, delimited, do_parse, flat_map, many0, map, named, opt, parse_to,
-    preceded, separated_list0, separated_list1, tag, tuple,
-};
-use pratt::{Affix, Associativity, PrattParser, Precedence};
-
-use crate::ast::{BinaryOperator, Binding, Expr, Fun, Literal, UnaryOperator};
-use crate::parser::{arg, ident, type_};
-
-#[derive(Debug)]
-enum TokenTree<'a> {
-    Prefix(UnaryOperator),
-    // Postfix(char),
-    Infix(BinaryOperator),
-    Primary(Expr<'a>),
-    Group(Vec<TokenTree<'a>>),
-}
-
-named!(prefix(&str) -> TokenTree, map!(alt!(
-    complete!(char!('-')) => { |_| UnaryOperator::Neg } |
-    complete!(char!('!')) => { |_| UnaryOperator::Not }
-), TokenTree::Prefix));
-
-named!(infix(&str) -> TokenTree, map!(alt!(
-    complete!(tag!("==")) => { |_| BinaryOperator::Equ } |
-    complete!(tag!("!=")) => { |_| BinaryOperator::Neq } |
-    complete!(char!('+')) => { |_| BinaryOperator::Add } |
-    complete!(char!('-')) => { |_| BinaryOperator::Sub } |
-    complete!(char!('*')) => { |_| BinaryOperator::Mul } |
-    complete!(char!('/')) => { |_| BinaryOperator::Div } |
-    complete!(char!('^')) => { |_| BinaryOperator::Pow }
-), TokenTree::Infix));
-
-named!(primary(&str) -> TokenTree, alt!(
-    do_parse!(
-        multispace0 >>
-        char!('(') >>
-        multispace0 >>
-        group: group >>
-        multispace0 >>
-        char!(')') >>
-        multispace0 >>
-            (TokenTree::Group(group))
-    ) |
-    delimited!(multispace0, simple_expr, multispace0) => { |s| TokenTree::Primary(s) }
-));
-
-named!(
-    rest(&str) -> Vec<(TokenTree, Vec<TokenTree>, TokenTree)>,
-    many0!(tuple!(
-        infix,
-        delimited!(multispace0, many0!(prefix), multispace0),
-        primary
-        // many0!(postfix)
-    ))
-);
-
-named!(group(&str) -> Vec<TokenTree>, do_parse!(
-    prefix: many0!(prefix)
-        >> primary: primary
-        // >> postfix: many0!(postfix)
-        >> rest: rest
-        >> ({
-            let mut res = prefix;
-            res.push(primary);
-            // res.append(&mut postfix);
-            for (infix, mut prefix, primary/*, mut postfix*/) in rest {
-                res.push(infix);
-                res.append(&mut prefix);
-                res.push(primary);
-                // res.append(&mut postfix);
-            }
-            res
-        })
-));
-
-fn token_tree(i: &str) -> nom::IResult<&str, Vec<TokenTree>> {
-    group(i)
-}
-
-struct ExprParser;
-
-impl<'a, I> PrattParser<I> for ExprParser
-where
-    I: Iterator<Item = TokenTree<'a>>,
-{
-    type Error = pratt::NoError;
-    type Input = TokenTree<'a>;
-    type Output = Expr<'a>;
-
-    fn query(&mut self, input: &Self::Input) -> Result<Affix, Self::Error> {
-        use BinaryOperator::*;
-        use UnaryOperator::*;
-
-        Ok(match input {
-            TokenTree::Infix(Add) => Affix::Infix(Precedence(6), Associativity::Left),
-            TokenTree::Infix(Sub) => Affix::Infix(Precedence(6), Associativity::Left),
-            TokenTree::Infix(Mul) => Affix::Infix(Precedence(7), Associativity::Left),
-            TokenTree::Infix(Div) => Affix::Infix(Precedence(7), Associativity::Left),
-            TokenTree::Infix(Pow) => Affix::Infix(Precedence(8), Associativity::Right),
-            TokenTree::Infix(Equ) => Affix::Infix(Precedence(4), Associativity::Right),
-            TokenTree::Infix(Neq) => Affix::Infix(Precedence(4), Associativity::Right),
-            TokenTree::Prefix(Neg) => Affix::Prefix(Precedence(6)),
-            TokenTree::Prefix(Not) => Affix::Prefix(Precedence(6)),
-            TokenTree::Primary(_) => Affix::Nilfix,
-            TokenTree::Group(_) => Affix::Nilfix,
-        })
-    }
-
-    fn primary(&mut self, input: Self::Input) -> Result<Self::Output, Self::Error> {
-        Ok(match input {
-            TokenTree::Primary(expr) => expr,
-            TokenTree::Group(group) => self.parse(&mut group.into_iter()).unwrap(),
-            _ => unreachable!(),
-        })
-    }
-
-    fn infix(
-        &mut self,
-        lhs: Self::Output,
-        op: Self::Input,
-        rhs: Self::Output,
-    ) -> Result<Self::Output, Self::Error> {
-        let op = match op {
-            TokenTree::Infix(op) => op,
-            _ => unreachable!(),
-        };
-        Ok(Expr::BinaryOp {
-            lhs: Box::new(lhs),
-            op,
-            rhs: Box::new(rhs),
-        })
-    }
-
-    fn prefix(&mut self, op: Self::Input, rhs: Self::Output) -> Result<Self::Output, Self::Error> {
-        let op = match op {
-            TokenTree::Prefix(op) => op,
-            _ => unreachable!(),
-        };
-
-        Ok(Expr::UnaryOp {
-            op,
-            rhs: Box::new(rhs),
-        })
-    }
-
-    fn postfix(
-        &mut self,
-        _lhs: Self::Output,
-        _op: Self::Input,
-    ) -> Result<Self::Output, Self::Error> {
-        unreachable!()
-    }
-}
-
-named!(int(&str) -> Literal, map!(flat_map!(digit1, parse_to!(u64)), Literal::Int));
-
-named!(bool_(&str) -> Literal, alt!(
-    complete!(tag!("true")) => { |_| Literal::Bool(true) } |
-    complete!(tag!("false")) => { |_| Literal::Bool(false) }
-));
-
-fn string_internal(i: &str) -> nom::IResult<&str, Cow<'_, str>, nom::error::Error<&str>> {
-    // TODO(grfn): use String::split_once when that's stable
-    let (s, rem) = if let Some(pos) = i.find('"') {
-        (&i[..pos], &i[(pos + 1)..])
-    } else {
-        return Err(nom::Err::Error(nom::error::Error::new(
-            i,
-            nom::error::ErrorKind::Tag,
-        )));
-    };
-
-    Ok((rem, Cow::Borrowed(s)))
-}
-
-named!(string(&str) -> Literal, preceded!(
-    complete!(char!('"')),
-    map!(
-        string_internal,
-        |s| Literal::String(s)
-    )
-));
-
-named!(unit(&str) -> Literal, map!(complete!(tag!("()")), |_| Literal::Unit));
-
-named!(literal(&str) -> Literal, alt!(int | bool_ | string | unit));
-
-named!(literal_expr(&str) -> Expr, map!(literal, Expr::Literal));
-
-named!(binding(&str) -> Binding, do_parse!(
-    multispace0
-        >> ident: ident
-        >> multispace0
-        >> type_: opt!(preceded!(tuple!(tag!(":"), multispace0), type_))
-        >> multispace0
-        >> char!('=')
-        >> multispace0
-        >> body: expr
-        >> (Binding {
-            ident,
-            type_,
-            body
-        })
-));
-
-named!(let_(&str) -> Expr, do_parse!(
-    tag!("let")
-        >> multispace0
-        >> bindings: separated_list1!(alt!(char!(';') | char!('\n')), binding)
-        >> multispace0
-        >> tag!("in")
-        >> multispace0
-        >> body: expr
-        >> (Expr::Let {
-            bindings,
-            body: Box::new(body)
-        })
-));
-
-named!(if_(&str) -> Expr, do_parse! (
-    tag!("if")
-        >> multispace0
-        >> condition: expr
-        >> multispace0
-        >> tag!("then")
-        >> multispace0
-        >> then: expr
-        >> multispace0
-        >> tag!("else")
-        >> multispace0
-        >> else_: expr
-        >> (Expr::If {
-            condition: Box::new(condition),
-            then: Box::new(then),
-            else_: Box::new(else_)
-        })
-));
-
-named!(ident_expr(&str) -> Expr, map!(ident, Expr::Ident));
-
-fn ascripted<'a>(
-    p: impl Fn(&'a str) -> nom::IResult<&'a str, Expr, nom::error::Error<&'a str>> + 'a,
-) -> impl Fn(&'a str) -> nom::IResult<&str, Expr, nom::error::Error<&'a str>> {
-    move |i| {
-        do_parse!(
-            i,
-            expr: p
-                >> multispace0
-                >> complete!(tag!(":"))
-                >> multispace0
-                >> type_: type_
-                >> (Expr::Ascription {
-                    expr: Box::new(expr),
-                    type_
-                })
-        )
-    }
-}
-
-named!(paren_expr(&str) -> Expr,
-       delimited!(complete!(tag!("(")), expr, complete!(tag!(")"))));
-
-named!(funcref(&str) -> Expr, alt!(
-    ident_expr |
-    paren_expr
-));
-
-named!(no_arg_call(&str) -> Expr, do_parse!(
-    fun: funcref
-        >> complete!(tag!("()"))
-        >> (Expr::Call {
-            fun: Box::new(fun),
-            args: vec![],
-        })
-));
-
-named!(fun_expr(&str) -> Expr, do_parse!(
-    tag!("fn")
-        >> multispace1
-        >> args: separated_list0!(multispace1, arg)
-        >> multispace0
-        >> char!('=')
-        >> multispace0
-        >> body: expr
-        >> (Expr::Fun(Box::new(Fun {
-            args,
-            body
-        })))
-));
-
-named!(fn_arg(&str) -> Expr, alt!(
-    ident_expr |
-    literal_expr |
-    paren_expr
-));
-
-named!(call_with_args(&str) -> Expr, do_parse!(
-    fun: funcref
-        >> multispace1
-        >> args: separated_list1!(multispace1, fn_arg)
-        >> (Expr::Call {
-            fun: Box::new(fun),
-            args
-        })
-));
-
-named!(simple_expr_unascripted(&str) -> Expr, alt!(
-    let_ |
-    if_ |
-    fun_expr |
-    literal_expr |
-    ident_expr
-));
-
-named!(simple_expr(&str) -> Expr, alt!(
-    call!(ascripted(simple_expr_unascripted)) |
-    simple_expr_unascripted
-));
-
-named!(pub expr(&str) -> Expr, alt!(
-    no_arg_call |
-    call_with_args |
-    map!(token_tree, |tt| {
-        ExprParser.parse(&mut tt.into_iter()).unwrap()
-    }) |
-    simple_expr
-));
-
-#[cfg(test)]
-pub(crate) mod tests {
-    use super::*;
-    use crate::ast::{Arg, Ident, Type};
-    use std::convert::TryFrom;
-    use BinaryOperator::*;
-    use Expr::{BinaryOp, If, Let, UnaryOp};
-    use UnaryOperator::*;
-
-    pub(crate) fn ident_expr(s: &str) -> Box<Expr> {
-        Box::new(Expr::Ident(Ident::try_from(s).unwrap()))
-    }
-
-    mod operators {
-        use super::*;
-
-        #[test]
-        fn mul_plus() {
-            let (rem, res) = expr("x*y+z").unwrap();
-            assert!(rem.is_empty());
-            assert_eq!(
-                res,
-                BinaryOp {
-                    lhs: Box::new(BinaryOp {
-                        lhs: ident_expr("x"),
-                        op: Mul,
-                        rhs: ident_expr("y")
-                    }),
-                    op: Add,
-                    rhs: ident_expr("z")
-                }
-            )
-        }
-
-        #[test]
-        fn mul_plus_ws() {
-            let (rem, res) = expr("x * y    +    z").unwrap();
-            assert!(rem.is_empty(), "non-empty remainder: \"{}\"", rem);
-            assert_eq!(
-                res,
-                BinaryOp {
-                    lhs: Box::new(BinaryOp {
-                        lhs: ident_expr("x"),
-                        op: Mul,
-                        rhs: ident_expr("y")
-                    }),
-                    op: Add,
-                    rhs: ident_expr("z")
-                }
-            )
-        }
-
-        #[test]
-        fn unary() {
-            let (rem, res) = expr("x * -z").unwrap();
-            assert!(rem.is_empty(), "non-empty remainder: \"{}\"", rem);
-            assert_eq!(
-                res,
-                BinaryOp {
-                    lhs: ident_expr("x"),
-                    op: Mul,
-                    rhs: Box::new(UnaryOp {
-                        op: Neg,
-                        rhs: ident_expr("z"),
-                    })
-                }
-            )
-        }
-
-        #[test]
-        fn mul_literal() {
-            let (rem, res) = expr("x * 3").unwrap();
-            assert!(rem.is_empty());
-            assert_eq!(
-                res,
-                BinaryOp {
-                    lhs: ident_expr("x"),
-                    op: Mul,
-                    rhs: Box::new(Expr::Literal(Literal::Int(3))),
-                }
-            )
-        }
-
-        #[test]
-        fn equ() {
-            let res = test_parse!(expr, "x * 7 == 7");
-            assert_eq!(
-                res,
-                BinaryOp {
-                    lhs: Box::new(BinaryOp {
-                        lhs: ident_expr("x"),
-                        op: Mul,
-                        rhs: Box::new(Expr::Literal(Literal::Int(7)))
-                    }),
-                    op: Equ,
-                    rhs: Box::new(Expr::Literal(Literal::Int(7)))
-                }
-            )
-        }
-    }
-
-    #[test]
-    fn unit() {
-        assert_eq!(test_parse!(expr, "()"), Expr::Literal(Literal::Unit));
-    }
-
-    #[test]
-    fn bools() {
-        assert_eq!(
-            test_parse!(expr, "true"),
-            Expr::Literal(Literal::Bool(true))
-        );
-        assert_eq!(
-            test_parse!(expr, "false"),
-            Expr::Literal(Literal::Bool(false))
-        );
-    }
-
-    #[test]
-    fn simple_string_lit() {
-        assert_eq!(
-            test_parse!(expr, "\"foobar\""),
-            Expr::Literal(Literal::String(Cow::Borrowed("foobar")))
-        )
-    }
-
-    #[test]
-    fn let_complex() {
-        let res = test_parse!(expr, "let x = 1; y = x * 7 in (x + y) * 4");
-        assert_eq!(
-            res,
-            Let {
-                bindings: vec![
-                    Binding {
-                        ident: Ident::try_from("x").unwrap(),
-                        type_: None,
-                        body: Expr::Literal(Literal::Int(1))
-                    },
-                    Binding {
-                        ident: Ident::try_from("y").unwrap(),
-                        type_: None,
-                        body: Expr::BinaryOp {
-                            lhs: ident_expr("x"),
-                            op: Mul,
-                            rhs: Box::new(Expr::Literal(Literal::Int(7)))
-                        }
-                    }
-                ],
-                body: Box::new(Expr::BinaryOp {
-                    lhs: Box::new(Expr::BinaryOp {
-                        lhs: ident_expr("x"),
-                        op: Add,
-                        rhs: ident_expr("y"),
-                    }),
-                    op: Mul,
-                    rhs: Box::new(Expr::Literal(Literal::Int(4))),
-                })
-            }
-        )
-    }
-
-    #[test]
-    fn if_simple() {
-        let res = test_parse!(expr, "if x == 8 then 9 else 20");
-        assert_eq!(
-            res,
-            If {
-                condition: Box::new(BinaryOp {
-                    lhs: ident_expr("x"),
-                    op: Equ,
-                    rhs: Box::new(Expr::Literal(Literal::Int(8))),
-                }),
-                then: Box::new(Expr::Literal(Literal::Int(9))),
-                else_: Box::new(Expr::Literal(Literal::Int(20)))
-            }
-        )
-    }
-
-    #[test]
-    fn no_arg_call() {
-        let res = test_parse!(expr, "f()");
-        assert_eq!(
-            res,
-            Expr::Call {
-                fun: ident_expr("f"),
-                args: vec![]
-            }
-        );
-    }
-
-    #[test]
-    fn unit_call() {
-        let res = test_parse!(expr, "f ()");
-        assert_eq!(
-            res,
-            Expr::Call {
-                fun: ident_expr("f"),
-                args: vec![Expr::Literal(Literal::Unit)]
-            }
-        )
-    }
-
-    #[test]
-    fn call_with_args() {
-        let res = test_parse!(expr, "f x 1");
-        assert_eq!(
-            res,
-            Expr::Call {
-                fun: ident_expr("f"),
-                args: vec![*ident_expr("x"), Expr::Literal(Literal::Int(1))]
-            }
-        )
-    }
-
-    #[test]
-    fn call_funcref() {
-        let res = test_parse!(expr, "(let x = 1 in x) 2");
-        assert_eq!(
-            res,
-            Expr::Call {
-                fun: Box::new(Expr::Let {
-                    bindings: vec![Binding {
-                        ident: Ident::try_from("x").unwrap(),
-                        type_: None,
-                        body: Expr::Literal(Literal::Int(1))
-                    }],
-                    body: ident_expr("x")
-                }),
-                args: vec![Expr::Literal(Literal::Int(2))]
-            }
-        )
-    }
-
-    #[test]
-    fn anon_function() {
-        let res = test_parse!(expr, "let id = fn x = x in id 1");
-        assert_eq!(
-            res,
-            Expr::Let {
-                bindings: vec![Binding {
-                    ident: Ident::try_from("id").unwrap(),
-                    type_: None,
-                    body: Expr::Fun(Box::new(Fun {
-                        args: vec![Arg::try_from("x").unwrap()],
-                        body: *ident_expr("x")
-                    }))
-                }],
-                body: Box::new(Expr::Call {
-                    fun: ident_expr("id"),
-                    args: vec![Expr::Literal(Literal::Int(1))],
-                })
-            }
-        );
-    }
-
-    mod ascriptions {
-        use super::*;
-
-        #[test]
-        fn bare_ascription() {
-            let res = test_parse!(expr, "1: float");
-            assert_eq!(
-                res,
-                Expr::Ascription {
-                    expr: Box::new(Expr::Literal(Literal::Int(1))),
-                    type_: Type::Float
-                }
-            )
-        }
-
-        #[test]
-        fn fn_body_ascription() {
-            let res = test_parse!(expr, "let const_1 = fn x = 1: int in const_1 2");
-            assert_eq!(
-                res,
-                Expr::Let {
-                    bindings: vec![Binding {
-                        ident: Ident::try_from("const_1").unwrap(),
-                        type_: None,
-                        body: Expr::Fun(Box::new(Fun {
-                            args: vec![Arg::try_from("x").unwrap()],
-                            body: Expr::Ascription {
-                                expr: Box::new(Expr::Literal(Literal::Int(1))),
-                                type_: Type::Int,
-                            }
-                        }))
-                    }],
-                    body: Box::new(Expr::Call {
-                        fun: ident_expr("const_1"),
-                        args: vec![Expr::Literal(Literal::Int(2))]
-                    })
-                }
-            )
-        }
-
-        #[test]
-        fn let_binding_ascripted() {
-            let res = test_parse!(expr, "let x: int = 1 in x");
-            assert_eq!(
-                res,
-                Expr::Let {
-                    bindings: vec![Binding {
-                        ident: Ident::try_from("x").unwrap(),
-                        type_: Some(Type::Int),
-                        body: Expr::Literal(Literal::Int(1))
-                    }],
-                    body: ident_expr("x")
-                }
-            )
-        }
-    }
-}