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lang: basic ast work

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Schrottkatze 2024-06-05 18:00:14 +02:00
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13 changed files with 560 additions and 58 deletions
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16
crates/lang/src/lst_parser/syntax_kind.rs
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@ -53,7 +53,6 @@ pub enum SyntaxKind {
LIST,
// either of a vec, a matrix or a list
COLLECTION_ITEM,
DECL,
PARENTHESIZED_EXPR,
EXPR,
LITERAL,
@ -130,7 +129,6 @@ pub enum SyntaxKind {
ROOT,
EOF,
TOMBSTONE,
ERROR,
}
pub type TokenSet = EnumSet<SyntaxKind>;
@ -140,17 +138,3 @@ impl From<SyntaxKind> for rowan::SyntaxKind {
Self(kind as u16)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Lang {}
impl rowan::Language for Lang {
type Kind = SyntaxKind;
#[allow(unsafe_code)]
fn kind_from_raw(raw: rowan::SyntaxKind) -> Self::Kind {
assert!(raw.0 <= SyntaxKind::ROOT as u16);
unsafe { std::mem::transmute::<u16, SyntaxKind>(raw.0) }
}
fn kind_to_raw(kind: Self::Kind) -> rowan::SyntaxKind {
kind.into()
}
}