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use std::collections::HashMap;
use crate::sage::Idea;
use crate::book::word::Word;
use crate::model::yaml::map;
use crate::model::yaml::seq;
use std::borrow::Cow;
pub struct Volume {
pub complete: bool,
pub gist: Vec<(Option<String>, usize, Word)>,
buff: Option<HashMap<usize, Idea>>,
}
impl Volume {
pub fn new() -> Volume {
Volume {
complete: false,
gist: Vec::with_capacity(0),
buff: Some(HashMap::with_capacity(256)),
}
}
pub fn complete(&mut self) {
if self.complete {
return;
}
let mut buff = self.buff.take().unwrap();
self.gist.reserve_exact(buff.len());
let mut border: usize = 0;
for ix in buff.keys() {
border = *ix;
break;
}
for ix in 2..border {
if buff.contains_key(&ix) {
border = ix;
break;
}
}
let mut ix = border;
for _ in 0..buff.len() {
loop {
if let Some(idea) = buff.remove(&ix) {
self.process(idea);
ix += 1;
break;
} else {
ix += 1;
continue;
}
}
}
self.complete = true;
}
fn process(&mut self, idea: Idea) {
match idea {
Idea::Error(id, value) => self
.gist
.push((None, id.level, Word::Err(Cow::from(value)))),
Idea::ReadError(id, _, string) => {
self.gist
.push((None, id.level, Word::Err(Cow::from(string))))
}
Idea::ReadWarning(id, _, string) => {
self.gist
.push((None, id.level, Word::Wrn(Cow::from(string))))
}
Idea::NodeLiteral(id, alias, value) => {
self.gist.push((alias, id.level, Word::Str(value)))
}
Idea::NodeScalar(id, alias, value) => {
self.gist
.push((alias, id.level, Word::extract_scalar(value)))
}
Idea::NodeSequence(id, alias, tag) => {
self.gist.push((alias, id.level, Word::Seq(Cow::from(tag))))
}
Idea::NodeMetaSeq(id, alias, None) => {
self.gist
.push((alias, id.level, Word::Seq(Cow::from(seq::TAG))))
}
Idea::NodeMetaSeq(id, alias, Some(tag)) => {
self.gist.push((alias, id.level, Word::Seq(Cow::from(tag))))
}
Idea::NodeDictionary(id, alias, _, firstborn_id) => {
self.gist
.push((alias, id.level, Word::Map(Cow::from(map::TAG))));
if firstborn_id.is_some() {
let ln = self.gist.len();
let mut firstborn = self.gist.swap_remove(ln - 2);
firstborn.1 += 1; self.gist.push(firstborn);
}
}
Idea::NodeMetaMap(id, alias, tag, firstborn_id) => {
if let Some(tag) = tag {
self.gist.push((alias, id.level, Word::Map(Cow::from(tag))));
} else {
self.gist
.push((alias, id.level, Word::Map(Cow::from(map::TAG))));
}
if firstborn_id.is_some() {
let ln = self.gist.len();
let mut firstborn = self.gist.swap_remove(ln - 2);
firstborn.1 += 1; self.gist.push(firstborn);
}
}
Idea::Alias(id, value) => {
let mut narr: Option<Word> = None;
for (ix, &(ref alias, _, _)) in self.gist.iter().enumerate().rev() {
if let Some(ref alias) = *alias {
if *alias == value {
narr = Some(Word::Alias(ix));
break;
}
}
}
if narr.is_some() {
self.gist.push((None, id.level, narr.take().unwrap()));
} else {
self.gist.push((None, id.level, Word::UnboundAlias(value)));
}
}
Idea::Done | Idea::Dawn | Idea::Dusk => unreachable!(),
};
}
pub fn stamp(&mut self, idea: Idea) {
if self.complete {
return;
}
let ix = match idea {
Idea::Alias(ref id, _) => id.index,
Idea::Error(ref id, _) => id.index,
Idea::NodeMetaMap(ref id, _, _, _) => id.index,
Idea::NodeMetaSeq(ref id, _, _) => id.index,
Idea::NodeDictionary(ref id, _, _, _) => id.index,
Idea::NodeSequence(ref id, _, _) => id.index,
Idea::NodeScalar(ref id, _, _) => id.index,
Idea::NodeLiteral(ref id, _, _) => id.index,
Idea::ReadError(ref id, _, _) => id.index,
Idea::ReadWarning(ref id, _, _) => id.index,
_ => 0,
};
if ix > 0 {
self.buff.as_mut().unwrap().insert(ix, idea);
}
}
pub fn unalias(&self, idx: usize) -> &Word {
let &(_, _, ref word) = &self.gist[idx];
match *word {
Word::Alias(idx) => self.unalias(idx),
_ => word,
}
}
}