Struct Pragma 

pub struct Pragma {
    pub before: u32,
    pub tokens: Vec<Token>,
    pub span: Span,
}

One #pragma line, and where in the token stream it stood.

The line is kept beside the tokens rather than in them. A pragma can appear anywhere a line can, which is between any two tokens at all, so leaving it in the stream would mean every rule in the parser had to know about a token that is not part of any grammar. What a consumer needs instead is where it was, and Pragma::before is that.

Nothing acts on one yet. The record is here so that when something does, #pragma pack most likely, the position it has to be applied at has not already been thrown away.

Fields

before: u32

The index in Tokens::tokens of the token this line came before.

tokens: Vec<Token>

The tokens of the line, with the # and the pragma taken off.

span: Span

The #, which is where a diagnostic about the line points.

Trait Implementations

impl Clone for Pragma

fn clone(&self) -> Pragma

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Pragma

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

Formats the value using the given formatter.