Struct IndentStack

pub struct IndentStack {
    pub allow_inconsistent_indents: bool,
    /* private fields */
}

Stores the indentation state of an off-side parser. The default state is where

Fields

allow_inconsistent_indents: bool

Implementations

impl IndentStack

pub fn default_inconsistent_indents() -> Self

pub fn accept(&mut self, input: &str) -> Result<isize, IndentError>

Mutates the state of the stack by applying an indent level. There is no restriction on the input characters, as long as they are identical.

The initial state is an empty indent. Passing a non-empty string the first time would immediately result in an indent.

Returns

• If an indentation error occurred, None is returned.
• Ok(1) implies that an indent is detected.
• Ok(0) implies that no indentation change is detected.
• Ok(x) where x < 0 implies that -x levels of dedents are detected.

Trait Implementations

impl Debug for IndentStack

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for IndentStack

fn default() -> IndentStack

Returns the “default value” for a type.