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use crate::pagespec::{Expr, OpCode};
grammar;
pub Expr: Box<Expr> = {
Expr Op Term => Box::new(Expr::Op(<>)),
Term,
}
Term: Box<Expr> = {
Glob => Box::new(Expr::Glob(<>)),
"link" "(" <g:Glob> ")" => Box::new(Expr::LinksHereFunc(<>)),
"page" "(" <g:Glob> ")" => Box::new(Expr::PageFunc(<>)),
"tagged" "(" <g:Glob> ")" => Box::new(Expr::TaggedFunc(<>)),
"!" <t:Term> => Box::new(Expr::Negate(t)),
"(" <e:Expr> ")" => e,
}
Glob: String = {
// Ideally we would use \w below, instead of Latin letter ranges, but
// as of 2023-04-22 it fails to compile.
r"([a-zA-Z0-9._*?/-])+" => <>.to_string(),
}
Op: OpCode = {
"and" => OpCode::And,
"or" => OpCode::Or,
}
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