Method start_pos

core/src/ast.rs:159–194

Returns the start position of the expression.

(&self)

impl Expr {
    /// Returns the start position of the expression.
    pub fn start_pos(&self) -> LineCol {
        let mut expr = self;
        loop {
            match expr {
                Expr::Boolean(span) => return span.pos,
                Expr::Double(span) => return span.pos,
                Expr::Integer(span) => return span.pos,
                Expr::Text(span) => return span.pos,

                Expr::Symbol(span) => return span.pos,

                Expr::Not(span) => return span.pos,
                Expr::Negate(span) => return span.pos,

                Expr::Call(span) => return span.vref_pos,

                Expr::Add(span)
                | Expr::And(span)
                | Expr::Divide(span)
                | Expr::Equal(span)
                | Expr::Greater(span)
                | Expr::GreaterEqual(span)
                | Expr::Less(span)
                | Expr::LessEqual(span)
                | Expr::Modulo(span)
                | Expr::Multiply(span)
                | Expr::NotEqual(span)
                | Expr::Or(span)
                | Expr::Power(span)
                | Expr::ShiftLeft(span)
                | Expr::ShiftRight(span)
                | Expr::Subtract(span)
                | Expr::Xor(span) => expr = &span.lhs,
            }
        }
    }
}

/// Represents type of an expression.