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|
use ra_syntax::SmolStr;
use crate::macros::tt;
struct MacroRules {
rules: Vec<Rule>,
}
struct Rule {
lhs: TokenTree,
rhs: TokenTree,
}
enum TokenTree {
Leaf(Leaf),
Subtree(Subtree),
Repeat(Repeat),
}
enum Leaf {
Literal(Literal),
Punct(Punct),
Ident(Ident),
Var(Var),
}
struct Subtree {
delimiter: Delimiter,
token_trees: Vec<TokenTree>,
}
enum Delimiter {
Parenthesis,
Brace,
Bracket,
None,
}
struct Repeat {
subtree: Subtree,
kind: RepeatKind,
}
enum RepeatKind {
ZeroOrMore,
OneOrMore,
ZeroOrOne,
}
struct Literal {
text: SmolStr,
}
struct Punct {
char: char,
}
struct Ident {
text: SmolStr,
}
struct Var {
text: SmolStr,
}
fn parse(tt: tt::TokenTree) -> MacroRules {
MacroRules { rules: Vec::new() }
}
|
