refactor: remove general api to set cell kind and add pdf.(header|data)-cell

crates/typst-library/src/layout/grid/resolve.rs

@@ -22,7 +22,7 @@ use typst_syntax::Span;
 use typst_utils::NonZeroExt;
 
 use crate::introspection::SplitLocator;
-use crate::model::{TableCellKind, TableHeaderScope};
+use crate::pdf::{TableCellKind, TableHeaderScope};
 
 /// Convert a grid to a cell grid.
 #[typst_macros::time(span = elem.span())]
@@ -226,7 +226,7 @@ impl ResolvableCell for Packed<TableCell> {
         let breakable = cell.breakable(styles).unwrap_or(breakable);
         let fill = cell.fill(styles).unwrap_or_else(|| fill.clone());
 
-        let kind = cell.kind(styles).or(kind);
+        let kind = cell.kind().copied().unwrap_or_default().or(kind);
 
         let cell_stroke = cell.stroke(styles);
         let stroke_overridden =

crates/typst-library/src/model/table.rs

@@ -2,14 +2,13 @@ use std::num::{NonZeroU32, NonZeroUsize};
 use std::sync::Arc;
 
 use ecow::EcoString;
-use typst_macros::Cast;
 use typst_utils::NonZeroExt;
 
 use crate::diag::{bail, HintedStrResult, HintedString, SourceResult};
 use crate::engine::Engine;
 use crate::foundations::{
-    cast, dict, elem, scope, Content, Dict, NativeElement, Packed, Show, Smart,
+    cast, elem, scope, Content, NativeElement, Packed, Show, Smart, StyleChain,
-    StyleChain, TargetElem,
+    TargetElem,
 };
 use crate::html::{attr, tag, HtmlAttrs, HtmlElem, HtmlTag};
 use crate::introspection::{Locatable, Locator};
@@ -20,6 +19,7 @@ use crate::layout::{
     TrackSizings,
 };
 use crate::model::Figurable;
+use crate::pdf::TableCellKind;
 use crate::text::LocalName;
 use crate::visualize::{Paint, Stroke};
 
@@ -811,7 +811,8 @@ pub struct TableCell {
     #[fold]
     pub stroke: Sides<Option<Option<Arc<Stroke>>>>,
 
-    // TODO: feature gate
+    #[internal]
+    #[synthesized]
     pub kind: Smart<TableCellKind>,
 
     /// Whether rows spanned by this cell can be placed in different pages.
@@ -851,65 +852,3 @@ impl From<Content> for TableCell {
         value.unpack::<Self>().unwrap_or_else(Self::new)
     }
 }
-
-#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Hash)]
-pub enum TableCellKind {
-    Header(NonZeroU32, TableHeaderScope),
-    Footer,
-    #[default]
-    Data,
-}
-
-cast! {
-    TableCellKind,
-    self => match self {
-        Self::Header(level, scope) => dict! { "level" => level, "scope" => scope }.into_value(),
-        Self::Footer => "footer".into_value(),
-        Self::Data => "data".into_value(),
-    },
-    "header" => Self::Header(NonZeroU32::ONE, TableHeaderScope::default()),
-    "footer" => Self::Footer,
-    "data" => Self::Data,
-    mut dict: Dict => {
-        // TODO: have a `pdf.header` function instead?
-        #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, Cast)]
-        enum HeaderKind {
-            Header,
-        }
-        dict.take("kind")?.cast::<HeaderKind>()?;
-        let level = dict.take("level").ok().map(|v| v.cast()).transpose()?;
-        let scope = dict.take("scope").ok().map(|v| v.cast()).transpose()?;
-        dict.finish(&["kind", "level", "scope"])?;
-        Self::Header(level.unwrap_or(NonZeroU32::ONE), scope.unwrap_or_default())
-    },
-}
-
-/// The scope of a table header cell.
-#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Hash, Cast)]
-pub enum TableHeaderScope {
-    /// The header cell refers to both the row and the column.
-    Both,
-    /// The header cell refers to the column.
-    #[default]
-    Column,
-    /// The header cell refers to the row.
-    Row,
-}
-
-impl TableHeaderScope {
-    pub fn refers_to_column(&self) -> bool {
-        match self {
-            TableHeaderScope::Both => true,
-            TableHeaderScope::Column => true,
-            TableHeaderScope::Row => false,
-        }
-    }
-
-    pub fn refers_to_row(&self) -> bool {
-        match self {
-            TableHeaderScope::Both => true,
-            TableHeaderScope::Column => false,
-            TableHeaderScope::Row => true,
-        }
-    }
-}

crates/typst-library/src/pdf/accessibility.rs

@@ -1,11 +1,14 @@
+use std::num::NonZeroU32;
+
 use ecow::EcoString;
-use typst_macros::{cast, elem, Cast};
+use typst_macros::{cast, elem, func, Cast};
+use typst_utils::NonZeroExt;
 
 use crate::diag::SourceResult;
 use crate::engine::Engine;
-use crate::foundations::{Content, Packed, Show, StyleChain};
+use crate::foundations::{Content, NativeElement, Packed, Show, Smart, StyleChain};
 use crate::introspection::Locatable;
-use crate::model::TableHeaderScope;
+use crate::model::TableCell;
 
 // TODO: docs
 #[elem(Locatable, Show)]
@@ -210,3 +213,68 @@ impl Show for Packed<ArtifactElem> {
         Ok(self.body.clone())
     }
 }
+
+// TODO: feature gate
+/// Explicity define this cell as a header cell.
+#[func]
+pub fn header_cell(
+    #[named]
+    #[default(NonZeroU32::ONE)]
+    level: NonZeroU32,
+    #[named]
+    #[default]
+    scope: TableHeaderScope,
+    /// The table cell.
+    cell: TableCell,
+) -> Content {
+    cell.with_kind(Smart::Custom(TableCellKind::Header(level, scope)))
+        .pack()
+}
+
+// TODO: feature gate
+/// Explicity define this cell as a data cell.
+#[func]
+pub fn data_cell(
+    /// The table cell.
+    cell: TableCell,
+) -> Content {
+    cell.with_kind(Smart::Custom(TableCellKind::Data)).pack()
+}
+
+#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Hash)]
+pub enum TableCellKind {
+    Header(NonZeroU32, TableHeaderScope),
+    Footer,
+    #[default]
+    Data,
+}
+
+/// The scope of a table header cell.
+#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Hash, Cast)]
+pub enum TableHeaderScope {
+    /// The header cell refers to both the row and the column.
+    Both,
+    /// The header cell refers to the column.
+    #[default]
+    Column,
+    /// The header cell refers to the row.
+    Row,
+}
+
+impl TableHeaderScope {
+    pub fn refers_to_column(&self) -> bool {
+        match self {
+            TableHeaderScope::Both => true,
+            TableHeaderScope::Column => true,
+            TableHeaderScope::Row => false,
+        }
+    }
+
+    pub fn refers_to_row(&self) -> bool {
+        match self {
+            TableHeaderScope::Both => true,
+            TableHeaderScope::Column => false,
+            TableHeaderScope::Row => true,
+        }
+    }
+}

crates/typst-library/src/pdf/mod.rs

@@ -15,5 +15,7 @@ pub fn module() -> Module {
     pdf.define_elem::<EmbedElem>();
     pdf.define_elem::<PdfTagElem>();
     pdf.define_elem::<ArtifactElem>();
+    pdf.define_func::<header_cell>();
+    pdf.define_func::<data_cell>();
     Module::new("pdf", pdf)
 }

crates/typst-pdf/src/tags/mod.rs

@@ -181,7 +181,7 @@ pub(crate) fn handle_end(gc: &mut GlobalContext, loc: Location) {
                 return;
             };
 
-            table_ctx.insert(cell, entry.nodes);
+            table_ctx.insert(&cell, entry.nodes);
             return;
         }
         StackEntryKind::Link(_, link) => {

crates/typst-pdf/src/tags/table.rs

@@ -7,7 +7,8 @@ use krilla::tagging::{
 };
 use smallvec::SmallVec;
 use typst_library::foundations::{Packed, Smart, StyleChain};
-use typst_library::model::{TableCell, TableCellKind, TableHeaderScope};
+use typst_library::model::TableCell;
+use typst_library::pdf::{TableCellKind, TableHeaderScope};
 
 use crate::tags::{TableId, TagNode};
 
@@ -54,12 +55,12 @@ impl TableCtx {
         }
     }
 
-    pub(crate) fn insert(&mut self, cell: Packed<TableCell>, nodes: Vec<TagNode>) {
+    pub(crate) fn insert(&mut self, cell: &TableCell, nodes: Vec<TagNode>) {
         let x = cell.x(StyleChain::default()).unwrap_or_else(|| unreachable!());
         let y = cell.y(StyleChain::default()).unwrap_or_else(|| unreachable!());
         let rowspan = cell.rowspan(StyleChain::default());
         let colspan = cell.colspan(StyleChain::default());
-        let kind = cell.kind(StyleChain::default());
+        let kind = cell.kind().copied().expect("kind to be set after layouting");
 
         // Extend the table grid to fit this cell.
         let required_height = y + rowspan.get();
@@ -344,7 +345,7 @@ mod tests {
     fn table<const SIZE: usize>(cells: [TableCell; SIZE]) -> TableCtx {
         let mut table = TableCtx::new(TableId(324), Some("summary".into()));
         for cell in cells {
-            table.insert(Packed::new(cell), Vec::new());
+            table.insert(&cell, Vec::new());
         }
         table
     }