38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
// XIR predicates
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//
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// Copyright (C) 2014-2023 Ryan Specialty, LLC.
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//
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// This file is part of TAME.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//! Functional predicates for XIR token streams.
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use super::{QName, Token};
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#[inline]
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pub fn not<T>(mut f: impl FnMut(&T) -> bool) -> impl FnMut(&T) -> bool {
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move |x| !f(x)
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}
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#[inline]
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pub fn open(name: QName) -> impl FnMut(&Token) -> bool {
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move |tok| matches!(tok, Token::Open(tokname, _) if *tokname == name)
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}
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#[inline]
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pub fn close(name: QName) -> impl FnMut(&Token) -> bool {
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move |tok| matches!(tok, Token::Close(Some(tokname), _) if *tokname == name)
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}
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