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Seed RNG with package name and prepend string to full random name.

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Hugo van der Wijst 2019-01-22 15:23:16 -08:00 committed by Jorge Aparicio
parent 82c533cbf4
commit a654d13eef
1 changed files with 8 additions and 2 deletions
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10
macros/src/codegen.rs
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@ -1998,7 +1998,12 @@ struct IdentGenerator {
impl IdentGenerator { impl IdentGenerator {
fn new() -> IdentGenerator { fn new() -> IdentGenerator {
IdentGenerator { rng: rand::rngs::SmallRng::seed_from_u64(0) } let crate_name = env!("CARGO_PKG_NAME");
let seed = [0u8; 16];
for (i, b) in crate_name.bytes().enumerate() {
seed[i%seed.len()].wrapping_add(b);
}
IdentGenerator { rng: rand::rngs::SmallRng::from_seed(seed) }
} }
fn mk_ident(&mut self, name: Option<&str>) -> Ident { fn mk_ident(&mut self, name: Option<&str>) -> Ident {
@ -2007,8 +2012,9 @@ impl IdentGenerator {
n = 4; n = 4;
format!("{}_", name) format!("{}_", name)
} else { } else {
let crate_name = env!("CARGO_PKG_NAME").replace("-", "_").to_lowercase();
n = 16; n = 16;
String::new() format!("{}__internal__", crate_name)
}; };
for i in 0..n { for i in 0..n {