graphix_compiler/typ/
tval.rs

1use super::{PrintFlag, Type};
2use crate::{env::Env, typ::format_with_flags, Rt, UserEvent};
3use fxhash::FxHashSet;
4use netidx::publisher::Value;
5use netidx_value::NakedValue;
6use poolshark::local::LPooled;
7use std::fmt;
8
9/// A value with it's type, used for formatting
10pub struct TVal<'a, R: Rt, E: UserEvent> {
11    pub env: &'a Env<R, E>,
12    pub typ: &'a Type,
13    pub v: &'a Value,
14}
15
16impl<'a, R: Rt, E: UserEvent> TVal<'a, R, E> {
17    fn fmt_int(
18        &self,
19        f: &mut fmt::Formatter<'_>,
20        hist: &mut FxHashSet<(usize, usize)>,
21    ) -> fmt::Result {
22        if !self.typ.is_a(&self.env, &self.v) {
23            return format_with_flags(PrintFlag::DerefTVars, || {
24                eprintln!("error, type {} does not match value {:?}", self.typ, self.v);
25                write!(f, "{}", NakedValue(self.v))
26            });
27        }
28        match (&self.typ, &self.v) {
29            (
30                Type::Primitive(_)
31                | Type::Bottom
32                | Type::Any
33                | Type::Fn(_)
34                | Type::Error(_),
35                v,
36            ) => {
37                write!(f, "{}", NakedValue(v))
38            }
39            (Type::Ref { .. }, v) => match self.typ.lookup_ref(&self.env) {
40                Err(e) => write!(f, "error, {e:?}"),
41                Ok(typ) => {
42                    let typ_addr = (typ as *const Type).addr();
43                    let v_addr = (self.v as *const Value).addr();
44                    if !hist.contains(&(typ_addr, v_addr)) {
45                        hist.insert((typ_addr, v_addr));
46                        Self { typ, env: self.env, v }.fmt_int(f, hist)?
47                    }
48                    Ok(())
49                }
50            },
51            (Type::Array(et), Value::Array(a)) => {
52                write!(f, "[")?;
53                for (i, v) in a.iter().enumerate() {
54                    Self { typ: et, env: self.env, v }.fmt_int(f, hist)?;
55                    if i < a.len() - 1 {
56                        write!(f, ", ")?
57                    }
58                }
59                write!(f, "]")
60            }
61            (Type::Array(_), v) => write!(f, "{}", NakedValue(v)),
62            (Type::Map { key, value }, Value::Map(m)) => {
63                write!(f, "{{")?;
64                for (i, (k, v)) in m.into_iter().enumerate() {
65                    Self { typ: key, env: self.env, v: k }.fmt_int(f, hist)?;
66                    write!(f, " => ")?;
67                    Self { typ: value, env: self.env, v: v }.fmt_int(f, hist)?;
68                    if i < m.len() - 1 {
69                        write!(f, ", ")?
70                    }
71                }
72                write!(f, "}}")
73            }
74            (Type::Map { .. }, v) => write!(f, "{}", NakedValue(v)),
75            (Type::ByRef(_), v) => write!(f, "{}", NakedValue(v)),
76            (Type::Struct(flds), Value::Array(a)) => {
77                write!(f, "{{")?;
78                for (i, ((n, et), v)) in flds.iter().zip(a.iter()).enumerate() {
79                    write!(f, "{n}: ")?;
80                    match v {
81                        Value::Array(a) if a.len() == 2 => {
82                            Self { typ: et, env: self.env, v: &a[1] }.fmt_int(f, hist)?
83                        }
84                        _ => write!(f, "err")?,
85                    }
86                    if i < flds.len() - 1 {
87                        write!(f, ", ")?
88                    }
89                }
90                write!(f, "}}")
91            }
92            (Type::Struct(_), v) => write!(f, "{}", NakedValue(v)),
93            (Type::Tuple(flds), Value::Array(a)) => {
94                write!(f, "(")?;
95                for (i, (t, v)) in flds.iter().zip(a.iter()).enumerate() {
96                    Self { typ: t, env: self.env, v }.fmt_int(f, hist)?;
97                    if i < flds.len() - 1 {
98                        write!(f, ", ")?
99                    }
100                }
101                write!(f, ")")
102            }
103            (Type::Tuple(_), v) => write!(f, "{}", NakedValue(v)),
104            (Type::TVar(tv), v) => match &*tv.read().typ.read() {
105                None => write!(f, "{}", NakedValue(v)),
106                Some(typ) => TVal { env: self.env, typ, v }.fmt_int(f, hist),
107            },
108            (Type::Variant(n, flds), Value::Array(a)) if a.len() >= 2 => {
109                write!(f, "`{n}(")?;
110                for (i, (t, v)) in flds.iter().zip(a[1..].iter()).enumerate() {
111                    Self { typ: t, env: self.env, v }.fmt_int(f, hist)?;
112                    if i < flds.len() - 1 {
113                        write!(f, ", ")?
114                    }
115                }
116                write!(f, ")")
117            }
118            (Type::Variant(_, _), Value::String(s)) => write!(f, "`{s}"),
119            (Type::Variant(_, _), v) => write!(f, "{}", NakedValue(v)),
120            (Type::Set(ts), v) => match ts.iter().find(|t| t.is_a(&self.env, v)) {
121                None => write!(f, "{}", NakedValue(v)),
122                Some(t) => Self { typ: t, env: self.env, v }.fmt_int(f, hist),
123            },
124        }
125    }
126}
127
128impl<'a, R: Rt, E: UserEvent> fmt::Display for TVal<'a, R, E> {
129    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
130        self.fmt_int(f, &mut LPooled::take())
131    }
132}
graphix_compiler/typ/tval.rs

graphix_compiler/typ/
tval.rs
