leo_grammar/errors/
syntax.rs

1// Copyright (C) 2019-2020 Aleo Systems Inc.
2// This file is part of the Leo library.
3
4// The Leo library is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8
9// The Leo library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License
15// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
16
17use crate::ast::Rule;
18
19use pest::error::Error;
20
21#[derive(Debug, Error)]
22pub enum SyntaxError {
23    #[error("aborting due to syntax error")]
24    Error(Error<Rule>),
25}
26
27impl From<Error<Rule>> for SyntaxError {
28    fn from(mut error: Error<Rule>) -> Self {
29        error = error.renamed_rules(|rule| match *rule {
30            Rule::LINE_END => "`;`".to_owned(),
31            Rule::type_integer => "`u32`".to_owned(),
32            Rule::type_field => "`field`".to_owned(),
33            Rule::type_group => "`group`".to_owned(),
34            Rule::address => "an aleo address: `aleo1...`".to_owned(),
35            Rule::file => "an import, circuit, or function".to_owned(),
36            Rule::identifier => "a variable name".to_owned(),
37            Rule::type_ => "a type".to_owned(),
38            Rule::access => "`.`, `::`, `()`".to_owned(),
39
40            Rule::operation_and => "`&&`".to_owned(),
41            Rule::operation_or => "`||`".to_owned(),
42            Rule::operation_eq => "`==`".to_owned(),
43            Rule::operation_ne => "`!=`".to_owned(),
44            Rule::operation_ge => "`>=`".to_owned(),
45            Rule::operation_gt => "`>`".to_owned(),
46            Rule::operation_le => "`<=`".to_owned(),
47            Rule::operation_lt => "`<`".to_owned(),
48            Rule::operation_add => "`+`".to_owned(),
49            Rule::operation_sub => "`-`".to_owned(),
50            Rule::operation_mul => "`*`".to_owned(),
51            Rule::operation_div => "`/`".to_owned(),
52            Rule::operation_pow => "`**`".to_owned(),
53
54            Rule::package => "package. Check package and import names for errors.".to_owned(),
55            Rule::package_name => {
56                "package name. Please use lowercase letters, numbers, and dashes `-` only.".to_owned()
57            }
58
59            rule => format!("{:?}", rule),
60        });
61
62        SyntaxError::Error(error)
63    }
64}
leo_grammar/errors/syntax.rs

leo_grammar/errors/
syntax.rs
