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use ltk_meta::PropertyKind;
use crate::{
ast::{
builder::Builder,
diagnostics::{Diagnostic as D, MaybeSpanDiag, TypeMismatch},
node::{Map, MapEntry},
resolve::literals::ExpectedType,
Property, Value,
},
cst::Kind,
ContainerType, Node, RitoType, ScalarType,
};
use crate::{rito, span::Span};
impl<'a> Builder<'a> {
/// Attempt to resolve a `Block`/`ListItemBlock` node to a value
pub(crate) fn resolve_block_value(
&mut self,
block: &Node,
hint: impl Into<RitoType>,
hint_span: Option<Span>,
) -> Result<Value, MaybeSpanDiag> {
self.resolve_block_value_inner(block, hint.into(), hint_span)
}
fn resolve_block_value_inner(
&mut self,
block: &Node,
hint: RitoType,
hint_span: Option<Span>,
) -> Result<Value, MaybeSpanDiag> {
use ContainerType as C;
use PropertyKind as K;
use ScalarType as S;
match hint {
RitoType::Scalar(S::Struct | S::Embedded) => {
self.push(
D::MissingClassName {
span: block.open_brace_span(self.cst),
expected: hint,
}
.unwrap(),
);
Ok(Value::Unresolved {
span: block.span,
kind: hint,
})
}
RitoType::Scalar(
hint @ (S::Vector2 | S::Vector3 | S::Vector4 | S::Color | S::Matrix44),
) => Ok(self.resolve_listlike(block, hint, hint_span)),
RitoType::Container(C::Map(types)) => {
let (key_kind, value_kind) = types.unwrap_or_default();
let entries = self.resolve_body_map_entries(block, hint, hint_span);
Ok(Map {
key_kind,
value_kind,
entries,
span: block.span,
}
.into())
}
RitoType::Container(C::Container(item_kind)) => Ok(Value::Container {
item_kind: item_kind.unwrap_or_default(),
items: self.resolve_body_items(block, hint, hint_span),
span: block.span,
}),
RitoType::Container(C::OrderedList(item_kind)) => Ok(Value::UnorderedContainer {
item_kind: item_kind.unwrap_or_default(),
items: self.resolve_body_items(block, hint, hint_span),
span: block.span,
}),
RitoType::Container(C::Optional(item_kind)) => {
let item_kind = item_kind.unwrap_or_default();
if matches!(
item_kind.kind(),
K::Vector2 | K::Vector3 | K::Vector4 | K::Color | K::Matrix44
) {
let content: Vec<&Node> = block
.children
.get(self.cst)
.iter()
.filter_map(|c| c.tree(self.cst))
.filter(|n| n.kind != Kind::Comment)
.collect();
// `option[vec3] = { { 0.5, 5.3, -0.2 } }` - the listlike wrapped in its own
// block, the same shape a listlike takes as a `list[vec3]` item.
if let [only] = content[..] {
if only.kind == Kind::ListItemBlock {
let inner = self.resolve_list_item_block(only, item_kind, hint_span)?;
return Ok(Value::Optional {
item_kind: Some(item_kind),
value: Some(Box::new(inner)),
span: block.span,
});
}
}
if content.is_empty() {
return Ok(Value::Optional {
item_kind: Some(item_kind),
value: None,
span: block.span,
});
}
// an optional listlike spells its components flat, same as a bare listlike
let inner = self.resolve_listlike(block, item_kind, hint_span);
return Ok(Value::Optional {
item_kind: Some(item_kind),
value: Some(Box::new(inner)),
span: block.span,
});
}
let mut value = None;
for child in block.children.get(self.cst).iter() {
let Some(node) = child.tree(self.cst) else {
continue;
};
match node.kind {
Kind::Comment | Kind::Annotation => continue,
Kind::ListItem => {
match self.resolve_value(
node,
Some(ExpectedType::from(item_kind)),
hint_span,
) {
Ok(v) => match v.try_coerce_to(item_kind) {
Ok(coerced) => value = Some(coerced),
Err(v) => self.push(D::unwrap(
TypeMismatch {
span: v.span(),
expected: item_kind.into(),
expected_span: hint_span,
got: v.rito_type().into(),
}
.into(),
)),
},
Err(e) => self.push(e.default_span(node.span)),
}
}
Kind::ListItemBlock => {
match self.resolve_list_item_block(node, item_kind, hint_span) {
Ok(v) => value = Some(v),
Err(e) => self.push(e.fallback(node.span)),
}
}
_ => self.push(
D::UnexpectedItem {
span: node.trimmed_span(self.cst),
parent: hint,
expected: crate::ItemShape::Value,
}
.unwrap(),
),
}
}
Ok(Value::Optional {
item_kind: Some(item_kind),
value: value.map(Box::new),
span: block.span,
})
}
_ => Err(D::UnexpectedContainerItem {
span: block.span,
expected: hint,
expected_span: hint_span,
}
.into()),
}
}
pub(crate) fn resolve_body_properties(
&mut self,
block: &Node,
hint: RitoType,
) -> Vec<Property> {
let mut properties = Vec::new();
for child in block.children.get(self.cst).iter() {
let Some(node) = child.tree(self.cst) else {
continue;
};
match node.kind {
Kind::Comment | Kind::Annotation => continue,
Kind::Entry => match self.resolve_entry(node, Some(hint), None) {
Ok(entry) => match entry.key.try_coerce_to_bin_hash() {
Ok(hash) => properties.push(Property {
name: hash,
type_expr: entry.type_expr,
value: entry.value,
}),
Err(value) => self.push(D::unwrap(
TypeMismatch {
span: value.span(),
expected: rito!(Hash).into(),
expected_span: None,
got: value.rito_type().into(),
}
.into(),
)),
},
Err(e) => self.push(e.fallback(node.span)),
},
_ => {
self.push(
D::UnexpectedItem {
span: node.trimmed_span(self.cst),
parent: hint,
expected: crate::ItemShape::Entry,
}
.unwrap(),
);
}
}
}
properties
}
fn resolve_body_map_entries(
&mut self,
block: &Node,
hint: RitoType,
hint_span: Option<Span>,
) -> Vec<MapEntry> {
let key_hint = hint.subtype(0).unwrap_or_default();
let value_kind = hint.subtype(1).unwrap_or_default();
let mut entries = Vec::new();
for child in block.children.get(self.cst).iter() {
let Some(node) = child.tree(self.cst) else {
continue;
};
match node.kind {
Kind::Comment | Kind::Annotation => continue,
Kind::Entry => match self.resolve_entry(node, Some(hint), hint_span) {
Ok(entry) => match entry.key.try_coerce_to(key_hint) {
Ok(key) => {
match entry.value.as_ref() {
Some(value)
if value.rito_type().is_some_and(|k| {
k != value_kind.with_default_hash_type()
}) =>
{
self.push(D::unwrap(
TypeMismatch {
span: value.span(),
expected: hint.subtype(1).into(),
expected_span: hint_span,
got: value.rito_type().into(),
}
.into(),
));
}
_ => {
// reporting the error for not having a value should be handled already
}
}
entries.push(MapEntry {
key,
value: entry.value,
});
}
Err(key) => self.push(D::unwrap(
TypeMismatch {
span: key.span(),
expected: key_hint.into(),
expected_span: hint_span,
got: key.rito_type().into(),
}
.into(),
)),
},
Err(e) => self.push(e.fallback(node.span)),
},
_ => {
self.push(
D::UnexpectedItem {
span: node.trimmed_span(self.cst),
parent: hint,
expected: crate::ItemShape::Entry,
}
.unwrap(),
);
}
}
}
entries
}
fn resolve_body_items(
&mut self,
block: &Node,
hint: RitoType,
hint_span: Option<Span>,
) -> Vec<Value> {
let item_kind = hint.subtype(0).unwrap_or_default();
let mut items = Vec::new();
for child in block.children.get(self.cst).iter() {
let Some(node) = child.tree(self.cst) else {
continue;
};
match node.kind {
Kind::Comment | Kind::Annotation => continue,
Kind::ListItem => {
match self
.resolve_value(node, Some(ExpectedType::from(item_kind)), hint_span)
.and_then(|value| {
value.try_coerce_to(item_kind).map_err(|value| {
TypeMismatch {
span: value.span(),
expected: item_kind.into(),
expected_span: hint_span,
got: value.rito_type().into(),
}
.into()
})
}) {
Ok(value) => {
items.push(value);
}
Err(e) => self.push(e.default_span(node.span)),
}
}
Kind::ListItemBlock => {
match self.resolve_list_item_block(node, item_kind, hint_span) {
Ok(v) => items.push(v),
Err(e) => self.push(e.fallback(node.span)),
}
}
_ => {
self.push(
D::UnexpectedItem {
span: node.trimmed_span(self.cst),
parent: hint,
expected: crate::ItemShape::Value,
}
.unwrap(),
);
}
}
}
items
}
}