sphinx/codegen/
errors.rs

1use core::fmt;
2use std::error::Error;
3
4use crate::utils;
5use crate::debug::{DebugSymbol, SourceError};
6
7
8pub type CompileResult<T> = Result<T, CompileError>;
9
10#[derive(Debug)]
11pub struct CompileError {
12    message: String,
13    symbol: Option<DebugSymbol>,
14    cause: Option<Box<dyn Error>>,
15}
16
17impl CompileError {
18    pub fn new(message: &str) -> Self {
19        Self { message: message.to_string(), symbol: None, cause: None }
20    }
21    
22    pub fn with_symbol(mut self, symbol: DebugSymbol) -> Self {
23        self.symbol.get_or_insert(symbol); self 
24    }
25    
26    pub fn caused_by(mut self, error: impl Error + 'static) -> Self {
27        self.cause.replace(Box::new(error)); self
28    }
29}
30
31impl<S> From<S> for CompileError where S: AsRef<str> {
32    fn from(message: S) -> Self {
33        Self::new(message.as_ref())
34    }
35}
36
37impl Error for CompileError {
38    fn source(&self) -> Option<&(dyn Error + 'static)> {
39        self.cause.as_ref().map(|o| o.as_ref())
40    }
41}
42
43impl SourceError for CompileError {
44    fn debug_symbol(&self) -> Option<&DebugSymbol> { self.symbol.as_ref() }
45}
46
47impl fmt::Display for CompileError {
48    fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> Result<(), fmt::Error> {
49        
50        // let message = match self.kind() {
51        //     ErrorKind::CantAssignImmutable => "can't assign to immutable local variable",
52        //     ErrorKind::CantAssignNonLocal => "can't assign to a non-local variable without the \"nonlocal\" keyword",
53        //     ErrorKind::TupleLenMismatch => "can't assign tuples of different lengths",
54        //     ErrorKind::CantUpdateAssignTuple => "can't use update-assigment when assigning to a tuple",
55            
56        //     ErrorKind::CantResolveBreak(label) => 
57        //         if label.is_some() { "can't find loop or block with matching label for \"break\"" }
58        //         else { "\"break\" outside of loop or block" },
59            
60        //     ErrorKind::CantResolveContinue(label) => 
61        //         if label.is_some() { "can't find loop with matching label for \"continue;\"" }
62        //         else { "\"continue\" outside of loop" },
63            
64        //     ErrorKind::InvalidBreakWithValue => "\"break\" with value outside of block expression",
65        //     ErrorKind::InvalidLValueModifier => "assignment modifier is not allowed here",
66        //     ErrorKind::InternalLimit(message) => message,
67        // };
68        
69        let message =
70            if self.message.is_empty() { None }
71            else { Some(self.message.as_str()) };
72        
73        utils::format_error(fmt, "Compile error", message, self.source())
74    }
75}
sphinx/codegen/errors.rs

sphinx/codegen/
errors.rs
