Method parse_expr

perro_source/core/perro_particle_math/src/lib.rs:416–431

(&mut self)

    fn parse_unary(&mut self) -> Result<(), CompileError> {
        self.skip_ws();
        if self.eat(b'+') {
            return self.parse_unary();
        }
        if self.eat(b'-') {
            self.parse_unary()?;
            self.ops.push(Op::Neg);
            return Ok(());
        }
        self.parse_primary()
    }

    fn parse_primary(&mut self) -> Result<(), CompileError> {
        self.skip_ws();
        if self.eat(b'(') {
            self.parse_expr()?;
            self.skip_ws();
            self.expect(b')')?;
            return Ok(());