yog-script-analyze 0.1.0

Yog Script (.ys, .yns) analyzed: its lexer, parser and syntax tree, names resolved, the class index model — what the build and the editors read a source with.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

//! `not`.

use crate::ast::{Expr, ExprKind, UnOp};
use crate::parser::{PResult, Parser};
use crate::words::{Role, Word};

pub static WORD: Word = Word {
    text: "not",
    doc: "Negates a condition: `not level.isFrozen` (or `!level.isFrozen`).",
    reserved: true,
    roles: &[Role::Prefix { starts: None, parse }],
};

fn parse(p: &mut Parser) -> PResult<Expr> {
    let start = p.bump().span;
    let expr = p.unary()?;
    let span = start.to(expr.span);
    Ok(Expr { kind: ExprKind::Unary { op: UnOp::Not, expr: Box::new(expr) }, span })
}