1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
use thiserror::Error;

#[derive(Debug, PartialEq, Eq, Clone, Error)]
pub enum ParserError {
    #[error("Unexpected token: received {received} instead of {expected} at ({}, {})", span.0, span.1)]
    UnexpectedToken {
        expected: String,
        received: String,
        span: (u32, u32),
    },

    #[error("Failed to parse: {message} at ({}, {})", span.0, span.1)]
    FailedToParse { message: String, span: (u32, u32) },

    #[error("Unknown built in: {name} at ({}, {})", span.0, span.1)]
    UnknownBuiltIn { name: String, span: (u32, u32) },

    #[error("Unsupported built in: {name} at ({}, {})", span.0, span.1)]
    UnsupportedBuiltIn { name: String, span: (u32, u32) },

    #[error("Token out of bounds")]
    TokenOutOfBounds,

    #[error("Memory failure")]
    MemoryFailure,
}

pub(crate) type ParserResult<T> = Result<T, ParserError>;