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use crate::code_ast::types::CodeElem;
use crate::raw::{ArgumentVal, Child, ComposedMarkdown, Special};
use cdoc_base::node::{Attribute, Compound, Node, Script};
use lazy_static::lazy_static;
use pulldown_cmark::{Event, HeadingLevel, Parser as MdParser, Tag};
use regex::Regex;
use std::str::FromStr;
fn to_vec_element<T>(vec: Vec<T>) -> Vec<Node>
where
Node: From<T>,
{
vec.into_iter().map(Node::from).collect()
}
impl From<CodeElem> for Node {
fn from(value: CodeElem) -> Self {
match value {
CodeElem::Solution(s) => {
let mut children = vec![Node::Compound(Compound::new_with_children(
"solution",
None,
vec![Node::Plain(s.solution.to_string())],
))];
if let Some(placeholder) = s.placeholder {
children.push(Node::Compound(Compound::new_with_children(
"placeholder",
None,
vec![Node::Plain(placeholder.to_string())],
)))
}
Node::Compound(Compound::new_with_children(
"solution_block",
None,
children,
))
}
CodeElem::Src(s) => Node::Plain(s),
}
}
}
impl From<Child> for Node {
fn from(value: Child) -> Self {
let mut attributes = vec![];
match value.elem {
Special::Math { inner, is_block } => {
if is_block {
Node::Compound(Compound::new(
"math_block",
Some(value.label.as_str()),
attributes,
vec![Node::Plain(inner.to_string())],
))
} else {
Node::Compound(Compound::new(
"math",
Some(value.label.as_str()),
attributes,
vec![Node::Plain(inner.to_string())],
))
}
}
Special::Script { id, src, children } => {
let elements = children
.into_iter()
.map(|c| ComposedMarkdown::from(c).into())
.collect();
Node::Script(Script {
id,
src: src.to_string(),
elements,
})
}
Special::Command {
function,
parameters,
body,
} => {
let mut children = vec![];
for parameter in parameters {
match parameter.value {
ArgumentVal::Flag(f) => {
attributes.push((Some(f.to_string()), Attribute::Flag));
}
ArgumentVal::Content(c) => {
let composed = ComposedMarkdown::from(c);
let mut elems: Vec<Node> = composed.into();
let el = if elems.len() == 1 {
if let Node::Compound(n) = elems.remove(0) {
if n.type_id == "paragraph" {
n.children
} else {
vec![Node::Compound(n)]
}
} else {
elems
}
} else {
elems
};
attributes.push((
parameter.key.map(|k| k.to_string()),
Attribute::Compound(el),
));
// children.push(Element::Node(Node::new(
// format!("parameter:{}", parameter.key.as_ref().unwrap()),
// [(
// "name".to_string(),
// Attribute::String(parameter.key.unwrap().to_string()),
// )],
// composed.into(),
// )));
}
ArgumentVal::String(s) => attributes.push((
parameter.key.map(|k| k.to_string()),
Attribute::String(s.to_string()),
)),
ArgumentVal::Int(i) => attributes
.push((parameter.key.map(|k| k.to_string()), Attribute::Int(i))),
ArgumentVal::Float(f) => attributes
.push((parameter.key.map(|k| k.to_string()), Attribute::Float(f))),
}
}
if let Some(body) = body {
let composed = ComposedMarkdown::from(body);
let mut elems: Vec<Node> = composed.into();
let el = if elems.len() == 1 {
// TODO: Truly horrific
if let Node::Compound(n) = elems.remove(0) {
if n.type_id == "paragraph" {
n.children
} else {
vec![Node::Compound(n)]
}
} else {
elems
}
} else {
elems
};
children.extend(el);
}
Node::Compound(Compound::new(
function.to_string(),
Some(value.label.as_str()),
attributes,
children,
))
}
Special::CodeBlock {
inner,
attributes: attr,
..
} => {
if let Some(lang) = attr.get(0) {
attributes.push((
Some("language".to_string()),
Attribute::String(lang.to_string()),
));
}
if attr.get(1).is_some() {
attributes.push((Some("is_cell".to_string()), Attribute::Flag));
}
inner.meta.iter().for_each(|(k, v)| {
attributes.push((Some(k.to_string()), Attribute::String(v.to_string())))
});
Node::Compound(Compound::new(
"code_block",
Some(value.label.as_str()),
attributes,
inner.blocks.into_iter().map(|e| e.into()).collect(),
))
}
Special::CodeInline { inner } => Node::Compound(Compound::new_with_children(
"code",
Some(value.label.as_str()),
vec![Node::Plain(inner.to_string())],
)),
Special::Verbatim { inner } => Node::Plain(inner.to_string()),
}
}
}
lazy_static! {
static ref R: Regex = Regex::new(r"elem-([0-9]+)").expect("invalid regex expression");
}
impl From<ComposedMarkdown> for Vec<Node> {
fn from(value: ComposedMarkdown) -> Self {
let parser: MdParser = MdParser::new(&value.src);
let mut nodes = vec![Vec::new()];
for event in parser {
match event {
Event::Start(_) => nodes.push(Vec::new()),
Event::End(t) => {
let children = nodes.pop().expect("Missing children");
let current_node = nodes.last_mut().unwrap();
match t {
Tag::Paragraph => current_node.push(Node::Compound(
Compound::new_with_children("paragraph", None, children),
)),
Tag::Heading(level, label, _) => {
let mut attributes = vec![];
if let Some(label) = label {
attributes.push((
Some("label".to_string()),
Attribute::String(label.to_string()),
));
}
attributes.push((
Some("level".to_string()),
Attribute::Int(heading_to_lvl(level)),
));
current_node.push(Node::Compound(Compound::new(
"heading", None, attributes, children,
)))
}
Tag::List(idx) => current_node.push(Node::Compound(Compound::new(
"list",
None,
idx.map(|idx| {
vec![(Some("start_idx".to_string()), Attribute::Int(idx as i64))]
})
.unwrap_or_default(),
children,
))),
Tag::Item => current_node.push(Node::Compound(
Compound::new_with_children("list_item", None, children),
)),
Tag::Emphasis => current_node.push(Node::Compound(Compound::new(
"emphasis",
None,
[],
children,
))),
Tag::Strong => current_node.push(Node::Compound(Compound::new(
"strong",
None,
[],
children,
))),
Tag::Strikethrough => current_node.push(Node::Compound(Compound::new(
"strikethrough",
None,
[],
children,
))),
Tag::Link(_, url, alt) => current_node.push(Node::Compound(Compound::new(
"link",
None,
[
(Some("url".to_string()), Attribute::String(url.to_string())),
(Some("alt".to_string()), Attribute::String(alt.to_string())),
],
children,
))),
Tag::Image(_, url, alt) => {
current_node.push(Node::Compound(Compound::new(
"image",
None,
[
(Some("url".to_string()), Attribute::String(url.to_string())),
(Some("alt".to_string()), Attribute::String(alt.to_string())),
],
children,
)))
}
_ => {} // Missing on purpose/so far
}
}
Event::Html(src) => {
let is_insert = R.captures(src.as_ref()).and_then(|c| c.get(1));
if let Some(match_) = is_insert {
let idx = usize::from_str(match_.as_str()).unwrap();
let elem = value.children[idx].clone();
nodes.last_mut().unwrap().push(elem.into());
} else {
nodes.last_mut().unwrap().push(Node::Plain(src.to_string()));
}
}
Event::Text(text) => nodes
.last_mut()
.unwrap()
.push(Node::Plain(text.to_string())),
Event::SoftBreak => nodes
.last_mut()
.unwrap()
.push(Node::Compound(Compound::new_empty("soft_break", None))),
Event::HardBreak => nodes
.last_mut()
.unwrap()
.push(Node::Compound(Compound::new_empty("hard_break", None))),
Event::Rule => nodes
.last_mut()
.unwrap()
.push(Node::Compound(Compound::new_empty("rule", None))),
_ => {} // Missing on purpose
}
}
nodes.remove(0)
}
}
fn heading_to_lvl(value: HeadingLevel) -> i64 {
match value {
HeadingLevel::H1 => 1,
HeadingLevel::H2 => 2,
HeadingLevel::H3 => 3,
HeadingLevel::H4 => 4,
HeadingLevel::H5 => 5,
HeadingLevel::H6 => 6,
}
}