Struct purr::write::Writer

pub struct Writer { /* fields omitted */ }

A Follower that builds a string SMILEs representation.

use purr::walk::Follower;
use purr::write::Writer;
use purr::feature::{ AtomKind, BondKind };
 
fn main() {
    let mut writer = Writer::new();
 
    writer.root(AtomKind::Star);
    writer.extend(BondKind::Double, AtomKind::Star);
 
    assert_eq!(writer.write(), "*=*")
}

Implementations

impl Writer

pub fn new() -> Self

pub fn write(self) -> String

Trait Implementations

impl Debug for Writer

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

Formats the value using the given formatter.

impl Follower for Writer

fn root(&mut self, root: AtomKind)

A root atom has been found. This occurs at the first atom of every connected component. As such, every use of Follower must begin with at least one call to root. But root can also be called after the first atom has been found, as in methane hydrate (C.O).

fn extend(&mut self, bond_kind: BondKind, atom_kind: AtomKind)

A bond between the current head atom and the next head atom has been found. Using this method implies the existence of a head atom, as in methanol (C-O or CO).

fn join(&mut self, bond_kind: BondKind, rnum: Rnum)

A bond between the current head atom and a ring closure digit has been found. Using this method implies the existence of a head atom, as in cyclopropane (C1CC1).

fn pop(&mut self, depth: usize)

Pop the stack by the indicated depth. As roots and extensions are encountered, Follower builds a working path. Branching removes one or more atoms from the head of this path, exposing a new head. The newly-exposed head will have previously been a head.

impl PartialEq<Writer> for Writer

fn eq(&self, other: &Writer) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Writer) -> bool

This method tests for !=.

impl StructuralPartialEq for Writer