Method push

src/brace_stack.rs:9–33

(
        &mut self,
        brace: char,
    )

impl BraceStack {
    pub fn push(
        &mut self,
        brace: char,
    ) -> CsResult<()> {
        match brace {
            '(' | '[' | '{' => self.braces.push(brace),
            ')' => {
                if self.braces.pop() != Some('(') {
                    return Err(CsError::UnexpectedClosingBrace(brace));
                }
            }
            ']' => {
                if self.braces.pop() != Some('[') {
                    return Err(CsError::UnexpectedClosingBrace(brace));
                }
            }
            '}' => {
                if self.braces.pop() != Some('{') {
                    return Err(CsError::UnexpectedClosingBrace(brace));
                }
            }
            _ => panic!("unexpected brace: {}", brace),
        }
        Ok(())
    }
    pub fn depth(&self) -> usize {
        self.braces.len()
    }