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    }
18
19    Symbols {
20        Map,
21        Set,
22        hide,
23        int,
24        real,
25    }
26}
27
28/// All Rust keywords plus extra Flux keywords.
29pub mod kw {
30    #![allow(non_upper_case_globals)]
31
32    use rustc_span::Symbol;
33    pub use rustc_span::symbol::kw::*;
34
35    pub use super::kw_generated::*;
36
37    // Predefined symbols in rustc that are not Rust keywords but are Flux keywords.
38    // Update this in tandem with `is_flux_reserved`
39    pub const Opaque: Symbol = rustc_span::symbol::sym::opaque;
40    pub const Local: Symbol = rustc_span::symbol::sym::local;
41}
42
43pub mod sym {
44    pub use rustc_span::sym::*;
45
46    pub use super::sym_generated::*;
47}
48
49pub fn is_reserved(sym: Symbol, edition: Edition) -> bool {
50    // FIXME: We should treat these as reserved and adjust the parser to be consistent with Rust.
51    if sym == kw::SelfLower || sym == kw::SelfUpper || sym == kw::Crate {
52        return false;
53    }
54    sym.is_reserved(|| edition) || is_flux_reserved(sym)
55}
56
57// Update in tandem with predefined non-keyword symbols in `kw`
58fn is_flux_reserved(sym: Symbol) -> bool {
59    (kw::Bitvec <= sym && sym <= kw::Strg) || sym == kw::Opaque || sym == kw::Local
60}
flux_syntax/symbols.rs

flux_syntax/
symbols.rs
