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meli/melib/src/sieve/compiler/grammar/actions/action_flags.rs

91 lines
3.0 KiB
Rust

/*
* Copyright (c) 2020-2023, Stalwart Labs Ltd.
*
* This file is part of the Stalwart Sieve Interpreter.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
* in the LICENSE file at the top-level directory of this distribution.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* You can be released from the requirements of the AGPLv3 license by
* purchasing a commercial license. Please contact licensing@stalw.art
* for more details.
*/
use serde::{Deserialize, Serialize};
use crate::sieve::compiler::{
grammar::instruction::{CompilerState, Instruction},
lexer::{word::Word, Token},
CompileError, ErrorType, Value, VariableType,
};
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) struct EditFlags {
pub action: Action,
pub name: Option<VariableType>,
pub flags: Vec<Value>,
}
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub(crate) enum Action {
Set,
Add,
Remove,
}
impl<'x> CompilerState<'x> {
pub(crate) fn parse_flag_action(&mut self, word: Word) -> Result<(), CompileError> {
let token_info = self.tokens.unwrap_next()?;
let action = match word {
Word::SetFlag => Action::Set,
Word::AddFlag => Action::Add,
Word::RemoveFlag => Action::Remove,
_ => unreachable!(),
};
let instruction = Instruction::EditFlags(
match (
&token_info.token,
self.tokens.peek().map(|r| r.map(|t| &t.token)),
) {
(
Token::StringConstant(_),
Some(Ok(
Token::StringConstant(_) | Token::StringVariable(_) | Token::BracketOpen,
)),
) => EditFlags {
name: self.parse_variable_name(token_info, false)?.into(),
flags: self.parse_strings(false)?,
action,
},
(Token::BracketOpen, _)
| (
Token::StringConstant(_) | Token::StringVariable(_),
Some(Ok(Token::Semicolon)),
) => EditFlags {
name: None,
flags: self.parse_strings_token(token_info)?,
action,
},
_ => {
return Err(token_info.custom(ErrorType::InvalidArguments));
}
},
);
self.instructions.push(instruction);
Ok(())
}
}