brainfuck interpreter
brainfuck
cli
rust
feat: added positional context to bracket error variants
+13
-11
+13
-11
src/parser.rs
+13
-11
src/parser.rs
···
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#[derive(Debug)]
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pub enum SyntaxError {
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-
MissingOpenBracket(usize),
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MissingClosingBracket(usize),
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MissingOpenBracket(usize, usize),
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MissingClosingBracket(usize, usize),
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}
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impl fmt::Display for SyntaxError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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SyntaxError::MissingClosingBracket(pos) => {
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write!(f, "for open bracket at {:?}", pos)
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SyntaxError::MissingClosingBracket(line, col) => {
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write!(f, "for open bracket at line {:?}, col {:?}", line, col)
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}
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SyntaxError::MissingOpenBracket(pos) => {
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write!(f, "for closing bracket at {:?}", pos)
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SyntaxError::MissingOpenBracket(line, col) => {
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write!(f, "for closing bracket at line {:?}, col {:?}", line, col)
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}
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}
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}
···
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jump_map[pop] = pos;
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}
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None => {
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return Err(SyntaxError::MissingOpenBracket(pos));
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return Err(SyntaxError::MissingOpenBracket(e.line, e.col));
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}
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}
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}
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}
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if let Some(&pos) = balance.last() {
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return Err(SyntaxError::MissingClosingBracket(pos));
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+
match balance.last() {
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Some(pos) => {
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let tok = &tokens[*pos];
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return Err(SyntaxError::MissingClosingBracket(tok.line, tok.col));
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}
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None => Ok(jump_map),
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}
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Ok(jump_map)
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}
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#[cfg(test)]