bjoernager/rust
bjoernager/rust
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Introduce ExprKind::IncludedBytes

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This commit is contained in:
clubby789 2022-10-31 18:30:09 +00:00
parent b7b7f2716e
commit b2da155a9a
19 changed files with 78 additions and 15 deletions
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8
compiler/rustc_ast/src/util/literal.rs
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@ -2,6 +2,7 @@
use crate::ast::{self, Lit, LitKind};
use crate::token::{self, Token};
use rustc_data_structures::sync::Lrc;
use rustc_lexer::unescape::{byte_from_char, unescape_byte, unescape_char, unescape_literal, Mode};
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::Span;
@ -231,6 +232,13 @@ impl Lit {
Lit { token_lit: kind.to_token_lit(), kind, span }
}
/// Recovers an AST literal from a string of bytes produced by `include_bytes!`.
/// This requires ASCII-escaping the string, which can result in poor performance
/// for very large strings of bytes.
pub fn from_included_bytes(bytes: &Lrc<[u8]>, span: Span) -> Lit {
Self::from_lit_kind(LitKind::ByteStr(bytes.clone()), span)
}
/// Losslessly convert an AST literal into a token.
pub fn to_token(&self) -> Token {
let kind = match self.token_lit.kind {