flux_syntax/
symbols.rs

1use flux_macros::symbols;
2use rustc_span::{Symbol, edition::Edition};
3
4symbols! {
5    Keywords {
6        Bitvec: "bitvec",
7        Exists: "exists",
8        Forall: "forall",
9        Hrn: "hrn",
10        Hdl: "hdl",
11        Requires: "requires",
12        Ensures: "ensures",
13        Property: "property",
14        Qualifier: "qualifier",
15        Sort: "sort",
16        Strg: "strg",
17        Trusted: "trusted",
18        Reft: "reft",
19        Invariant: "invariant",
20        RefinedBy: "refined_by",
21    }
22
23    Symbols {
24        Map,
25        Set,
26        addr,
27        base,
28        int,
29        no_panic,
30        no_panic_if,
31        real,
32    }
33}
34
35/// All Rust keywords plus extra Flux keywords.
36pub mod kw {
37    #![allow(non_upper_case_globals)]
38
39    use rustc_span::Symbol;
40    pub use rustc_span::symbol::kw::*;
41
42    pub use super::kw_generated::*;
43
44    // Predefined symbols in rustc that are not Rust keywords but are Flux keywords.
45    // Update this in tandem with `is_flux_reserved`
46    pub const Opaque: Symbol = rustc_span::symbol::sym::opaque;
47    pub const Local: Symbol = rustc_span::symbol::sym::local;
48}
49
50pub mod sym {
51    pub use rustc_span::sym::*;
52
53    pub use super::sym_generated::*;
54}
55
56pub fn is_reserved(sym: Symbol, edition: Edition) -> bool {
57    // FIXME: We should treat these as reserved and adjust the parser to be consistent with Rust.
58    if sym == kw::SelfLower || sym == kw::SelfUpper || sym == kw::Crate || sym == kw::Super {
59        return false;
60    }
61    sym.is_reserved(|| edition) || is_flux_reserved(sym)
62}
63
64// Update in tandem with predefined non-keyword symbols in `kw`
65fn is_flux_reserved(sym: Symbol) -> bool {
66    (kw::Bitvec <= sym && sym <= kw::Strg) || sym == kw::Opaque || sym == kw::Local
67}
flux_syntax/symbols.rs

flux_syntax/
symbols.rs
