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108 lines
3.3 KiB
Rust
108 lines
3.3 KiB
Rust
/*
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* Copyright (c) 2020-2023, Stalwart Labs Ltd.
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*
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* This file is part of the Stalwart Sieve Interpreter.
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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 Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (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 Affero General Public License for more details.
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* in the LICENSE file at the top-level directory of this distribution.
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* You can be released from the requirements of the AGPLv3 license by
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* purchasing a commercial license. Please contact licensing@stalw.art
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* for more details.
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*/
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pub mod string;
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pub mod tokenizer;
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pub mod word;
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use std::{borrow::Cow, fmt::Display};
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use self::word::Word;
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use super::{Number, Value};
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub(crate) enum Token {
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CurlyOpen,
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CurlyClose,
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BracketOpen,
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BracketClose,
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ParenthesisOpen,
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ParenthesisClose,
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Comma,
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Semicolon,
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StringConstant(StringConstant),
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StringVariable(Vec<u8>),
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Number(usize),
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Identifier(Word),
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Tag(Word),
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Unknown(String),
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Colon,
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}
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#[derive(Debug, Clone, PartialEq, Eq)]
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pub(crate) enum StringConstant {
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String(String),
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Number(Number),
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}
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impl StringConstant {
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pub fn to_string(&self) -> Cow<str> {
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match self {
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StringConstant::String(s) => s.as_str().into(),
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StringConstant::Number(n) => n.to_string().into(),
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}
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}
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pub fn into_string(self) -> String {
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match self {
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StringConstant::String(s) => s,
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StringConstant::Number(n) => n.to_string(),
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}
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}
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}
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impl From<StringConstant> for Value {
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fn from(value: StringConstant) -> Self {
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match value {
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StringConstant::String(s) => Value::Text(s),
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StringConstant::Number(n) => Value::Number(n),
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}
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}
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}
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impl Display for Token {
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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match self {
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Token::CurlyOpen => f.write_str("{"),
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Token::CurlyClose => f.write_str("}"),
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Token::BracketOpen => f.write_str("["),
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Token::BracketClose => f.write_str("]"),
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Token::ParenthesisOpen => f.write_str("("),
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Token::ParenthesisClose => f.write_str(")"),
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Token::Comma => f.write_str(","),
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Token::Semicolon => f.write_str(";"),
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Token::Colon => f.write_str(":"),
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Token::Number(n) => write!(f, "{n}"),
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Token::Identifier(w) => w.fmt(f),
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Token::Tag(t) => write!(f, ":{t}"),
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Token::Unknown(s) => f.write_str(s),
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Token::StringVariable(s) => f.write_str(&String::from_utf8_lossy(s)),
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Token::StringConstant(c) => match c {
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StringConstant::String(s) => f.write_str(s),
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StringConstant::Number(n) => write!(f, "{n}"),
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},
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}
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}
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}
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