Reorganize library and tests

cli/src/main.rs

@@ -395,7 +395,7 @@ impl SystemWorld {
 
         Self {
             root,
-            library: Prehashed::new(typst_library::new()),
+            library: Prehashed::new(typst_library::build()),
             book: Prehashed::new(searcher.book),
             fonts: searcher.fonts,
             hashes: RefCell::default(),

library/src/basics/list.rs

@@ -1,7 +1,7 @@
-use crate::base::NumberingPattern;
-use crate::layout::{BlockNode, GridNode, HNode, Spacing, TrackSizing};
+use crate::compute::NumberingPattern;
+use crate::layout::{BlockNode, GridNode, HNode, ParNode, Spacing, TrackSizing};
 use crate::prelude::*;
-use crate::text::{ParNode, SpaceNode, TextNode};
+use crate::text::{SpaceNode, TextNode};
 
 /// An unordered (bulleted) or ordered (numbered) list.
 #[derive(Debug, Hash)]

library/src/basics/mod.rs

@@ -0,0 +1,9 @@
+//! Common document elements.
+
+mod heading;
+mod list;
+mod table;
+
+pub use self::heading::*;
+pub use self::list::*;
+pub use self::table::*;

library/src/compute/create.rs

@@ -106,12 +106,6 @@ pub fn str(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     }))
 }
 
-/// Create a blind text string.
-pub fn lorem(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let words: usize = args.expect("number of words")?;
-    Ok(Value::Str(lipsum::lipsum(words).into()))
-}
-
 /// Create a label from a string.
 pub fn label(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     Ok(Value::Label(Label(args.expect("string")?)))

library/src/compute/foundations.rs

@@ -1,20 +1,9 @@
-//! Foundational functions.
-
-mod calc;
-mod create;
-mod data;
-mod numbering;
-
-pub use self::calc::*;
-pub use self::create::*;
-pub use self::data::*;
-pub use self::numbering::*;
+use crate::prelude::*;
 
 use comemo::Track;
-use typst::model::{self, Route, Vm};
-use typst::syntax::Source;
 
-use crate::prelude::*;
+use typst::model;
+use typst::syntax::Source;
 
 /// The name of a value's type.
 pub fn type_(_: &Vm, args: &mut Args) -> SourceResult<Value> {
@@ -39,7 +28,7 @@ pub fn assert(_: &Vm, args: &mut Args) -> SourceResult<Value> {
 pub fn eval(vm: &Vm, args: &mut Args) -> SourceResult<Value> {
     let Spanned { v: text, span } = args.expect::<Spanned<String>>("source")?;
     let source = Source::synthesized(text, span);
-    let route = Route::default();
+    let route = model::Route::default();
     let module = model::eval(vm.world(), route.track(), &source)?;
     Ok(Value::Content(module.content))
 }

library/src/compute/mod.rs

@@ -0,0 +1,13 @@
+//! Computational functions.
+
+mod calc;
+mod create;
+mod data;
+mod foundations;
+mod utility;
+
+pub use self::calc::*;
+pub use self::create::*;
+pub use self::data::*;
+pub use self::foundations::*;
+pub use self::utility::*;

library/src/compute/utility.rs

@@ -4,6 +4,12 @@ use unscanny::Scanner;
 
 use crate::prelude::*;
 
+/// Create a blind text string.
+pub fn lorem(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let words: usize = args.expect("number of words")?;
+    Ok(Value::Str(lipsum::lipsum(words).into()))
+}
+
 /// Apply a numbering pattern to a number.
 pub fn numbering(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     let number = args.expect::<usize>("number")?;
@@ -11,7 +17,15 @@ pub fn numbering(_: &Vm, args: &mut Args) -> SourceResult<Value> {
     Ok(Value::Str(pattern.apply(number).into()))
 }
 
-/// A numbering pattern for lists or headings.
+/// How to turn a number into text.
+///
+/// A pattern consists of a prefix, followed by one of `1`, `a`, `A`, `i`, `I`
+/// or `*`, and then a suffix.
+///
+/// Examples of valid patterns:
+/// - `1)`
+/// - `a.`
+/// - `(I)`
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]
 pub struct NumberingPattern {
     prefix: EcoString,
@@ -60,7 +74,7 @@ castable! {
 
 /// Different kinds of numberings.
 #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
-pub enum NumberingKind {
+enum NumberingKind {
     Arabic,
     Letter,
     Roman,

library/src/layout/align.rs

@@ -1,5 +1,5 @@
+use super::{HorizontalAlign, ParNode};
 use crate::prelude::*;
-use crate::text::{HorizontalAlign, ParNode};
 
 /// Align content along the layouting axes.
 #[derive(Debug, Hash)]

library/src/layout/flow.rs

@@ -1,8 +1,7 @@
 use typst::model::Style;
 
-use super::{AlignNode, BlockNode, ColbreakNode, PlaceNode, Spacing, VNode};
+use super::{AlignNode, BlockNode, ColbreakNode, ParNode, PlaceNode, Spacing, VNode};
 use crate::prelude::*;
-use crate::text::ParNode;
 
 /// Arrange spacing, paragraphs and block-level nodes into a flow.
 ///

library/src/layout/mod.rs

@@ -5,9 +5,12 @@ mod columns;
 mod container;
 mod flow;
 mod grid;
+mod hide;
 mod pad;
 mod page;
+mod par;
 mod place;
+mod repeat;
 mod spacing;
 mod stack;
 mod transform;
@@ -17,9 +20,12 @@ pub use self::columns::*;
 pub use self::container::*;
 pub use self::flow::*;
 pub use self::grid::*;
+pub use self::hide::*;
 pub use self::pad::*;
 pub use self::page::*;
+pub use self::par::*;
 pub use self::place::*;
+pub use self::repeat::*;
 pub use self::spacing::*;
 pub use self::stack::*;
 pub use self::transform::*;
@@ -36,14 +42,11 @@ use typst::model::{
 };
 use typst::World;
 
+use crate::basics::{DescNode, EnumNode, ListItem, ListNode, DESC, ENUM, LIST};
+use crate::meta::DocumentNode;
 use crate::prelude::*;
 use crate::shared::BehavedBuilder;
-use crate::structure::{
-    DescNode, DocumentNode, EnumNode, ListItem, ListNode, DESC, ENUM, LIST,
-};
-use crate::text::{
-    LinebreakNode, ParNode, ParbreakNode, SmartQuoteNode, SpaceNode, TextNode,
-};
+use crate::text::{LinebreakNode, SmartQuoteNode, SpaceNode, TextNode};
 
 /// Root-level layout.
 #[capability]

library/src/layout/par.rs

@@ -4,12 +4,11 @@ use xi_unicode::LineBreakIterator;
 
 use typst::model::Key;
 
-use super::{
-    shape, Lang, LinebreakNode, Quoter, Quotes, ShapedText, SmartQuoteNode, SpaceNode,
-    TextNode,
-};
-use crate::layout::{HNode, Spacing};
+use super::{HNode, RepeatNode, Spacing};
 use crate::prelude::*;
+use crate::text::{
+    shape, LinebreakNode, Quoter, Quotes, ShapedText, SmartQuoteNode, SpaceNode, TextNode,
+};
 
 /// Arrange text, spacing and inline-level nodes into a paragraph.
 #[derive(Hash)]
@@ -129,30 +128,6 @@ impl ParbreakNode {
 
 impl Unlabellable for ParbreakNode {}
 
-/// Repeats content to fill a line.
-#[derive(Debug, Hash)]
-pub struct RepeatNode(pub Content);
-
-#[node(Layout, Inline)]
-impl RepeatNode {
-    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
-        Ok(Self(args.expect("body")?).pack())
-    }
-}
-
-impl Layout for RepeatNode {
-    fn layout(
-        &self,
-        world: Tracked<dyn World>,
-        styles: StyleChain,
-        regions: &Regions,
-    ) -> SourceResult<Fragment> {
-        self.0.layout(world, styles, regions)
-    }
-}
-
-impl Inline for RepeatNode {}
-
 /// Range of a substring of text.
 type Range = std::ops::Range<usize>;
 

library/src/layout/repeat.rs

@@ -0,0 +1,25 @@
+use crate::prelude::*;
+
+/// Repeats content to fill a line.
+#[derive(Debug, Hash)]
+pub struct RepeatNode(pub Content);
+
+#[node(Layout, Inline)]
+impl RepeatNode {
+    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
+        Ok(Self(args.expect("body")?).pack())
+    }
+}
+
+impl Layout for RepeatNode {
+    fn layout(
+        &self,
+        world: Tracked<dyn World>,
+        styles: StyleChain,
+        regions: &Regions,
+    ) -> SourceResult<Fragment> {
+        self.0.layout(world, styles, regions)
+    }
+}
+
+impl Inline for RepeatNode {}

library/src/layout/stack.rs

@@ -1,8 +1,7 @@
 use typst::model::StyledNode;
 
-use super::{AlignNode, Spacing};
+use super::{AlignNode, ParNode, Spacing};
 use crate::prelude::*;
-use crate::text::ParNode;
 
 /// Arrange content and spacing along an axis.
 #[derive(Debug, Hash)]

library/src/lib.rs

@@ -1,13 +1,14 @@
 //! Typst's standard library.
 
-pub mod base;
-pub mod graphics;
+pub mod basics;
+pub mod compute;
 pub mod layout;
 pub mod math;
+pub mod meta;
 pub mod prelude;
 pub mod shared;
-pub mod structure;
 pub mod text;
+pub mod visualize;
 
 use typst::geom::{Align, Color, Dir, GenAlign};
 use typst::model::{LangItems, Library, Node, NodeId, Scope, StyleMap};
@@ -15,7 +16,7 @@ use typst::model::{LangItems, Library, Node, NodeId, Scope, StyleMap};
 use self::layout::LayoutRoot;
 
 /// Construct the standard library.
-pub fn new() -> Library {
+pub fn build() -> Library {
     Library { scope: scope(), styles: styles(), items: items() }
 }
 
@@ -23,97 +24,102 @@ pub fn new() -> Library {
 fn scope() -> Scope {
     let mut std = Scope::new();
 
+    // Basics.
+    std.def_node::<basics::HeadingNode>("heading");
+    std.def_node::<basics::ListNode>("list");
+    std.def_node::<basics::EnumNode>("enum");
+    std.def_node::<basics::DescNode>("desc");
+    std.def_node::<basics::TableNode>("table");
+
     // Text.
+    std.def_node::<text::TextNode>("text");
     std.def_node::<text::LinebreakNode>("linebreak");
     std.def_node::<text::SmartQuoteNode>("smartquote");
-    std.def_node::<text::TextNode>("text");
-    std.def_node::<text::ParNode>("par");
-    std.def_node::<text::ParbreakNode>("parbreak");
     std.def_node::<text::StrongNode>("strong");
     std.def_node::<text::EmphNode>("emph");
-    std.def_node::<text::RawNode>("raw");
-    std.def_node::<text::UnderlineNode>("underline");
-    std.def_node::<text::StrikethroughNode>("strike");
-    std.def_node::<text::OverlineNode>("overline");
-    std.def_node::<text::SuperNode>("super");
-    std.def_node::<text::SubNode>("sub");
-    std.def_node::<text::LinkNode>("link");
-    std.def_node::<text::RepeatNode>("repeat");
     std.def_fn("lower", text::lower);
     std.def_fn("upper", text::upper);
     std.def_fn("smallcaps", text::smallcaps);
-
-    // Structure.
-    std.def_node::<structure::DocumentNode>("document");
-    std.def_node::<structure::RefNode>("ref");
-    std.def_node::<structure::HeadingNode>("heading");
-    std.def_node::<structure::ListNode>("list");
-    std.def_node::<structure::EnumNode>("enum");
-    std.def_node::<structure::DescNode>("desc");
-    std.def_node::<structure::TableNode>("table");
-
-    // Layout.
-    std.def_node::<layout::PageNode>("page");
-    std.def_node::<layout::PagebreakNode>("pagebreak");
-    std.def_node::<layout::HNode>("h");
-    std.def_node::<layout::VNode>("v");
-    std.def_node::<layout::BoxNode>("box");
-    std.def_node::<layout::BlockNode>("block");
-    std.def_node::<layout::AlignNode>("align");
-    std.def_node::<layout::PadNode>("pad");
-    std.def_node::<layout::StackNode>("stack");
-    std.def_node::<layout::GridNode>("grid");
-    std.def_node::<layout::ColumnsNode>("columns");
-    std.def_node::<layout::ColbreakNode>("colbreak");
-    std.def_node::<layout::PlaceNode>("place");
-    std.def_node::<layout::MoveNode>("move");
-    std.def_node::<layout::ScaleNode>("scale");
-    std.def_node::<layout::RotateNode>("rotate");
-
-    // Graphics.
-    std.def_node::<graphics::ImageNode>("image");
-    std.def_node::<graphics::LineNode>("line");
-    std.def_node::<graphics::RectNode>("rect");
-    std.def_node::<graphics::SquareNode>("square");
-    std.def_node::<graphics::EllipseNode>("ellipse");
-    std.def_node::<graphics::CircleNode>("circle");
-    std.def_node::<graphics::HideNode>("hide");
+    std.def_node::<text::SubNode>("sub");
+    std.def_node::<text::SuperNode>("super");
+    std.def_node::<text::UnderlineNode>("underline");
+    std.def_node::<text::StrikeNode>("strike");
+    std.def_node::<text::OverlineNode>("overline");
+    std.def_node::<text::RawNode>("raw");
 
     // Math.
     std.def_node::<math::MathNode>("math");
+    std.def_node::<math::AtomNode>("atom");
+    std.def_node::<math::FracNode>("frac");
     std.define("sum", "∑");
     std.define("in", "∈");
     std.define("arrow", "→");
     std.define("NN", "ℕ");
     std.define("RR", "ℝ");
 
-    // Base.
-    std.def_fn("type", base::type_);
-    std.def_fn("repr", base::repr);
-    std.def_fn("assert", base::assert);
-    std.def_fn("eval", base::eval);
-    std.def_fn("int", base::int);
-    std.def_fn("float", base::float);
-    std.def_fn("luma", base::luma);
-    std.def_fn("rgb", base::rgb);
-    std.def_fn("cmyk", base::cmyk);
-    std.def_fn("str", base::str);
-    std.def_fn("lorem", base::lorem);
-    std.def_fn("label", base::label);
-    std.def_fn("regex", base::regex);
-    std.def_fn("range", base::range);
-    std.def_fn("numbering", base::numbering);
-    std.def_fn("abs", base::abs);
-    std.def_fn("min", base::min);
-    std.def_fn("max", base::max);
-    std.def_fn("even", base::even);
-    std.def_fn("odd", base::odd);
-    std.def_fn("mod", base::mod_);
-    std.def_fn("csv", base::csv);
-    std.def_fn("json", base::json);
-    std.def_fn("xml", base::xml);
+    // Layout.
+    std.def_node::<layout::PageNode>("page");
+    std.def_node::<layout::PagebreakNode>("pagebreak");
+    std.def_node::<layout::FlowNode>("flow");
+    std.def_node::<layout::VNode>("v");
+    std.def_node::<layout::ParNode>("par");
+    std.def_node::<layout::ParbreakNode>("parbreak");
+    std.def_node::<layout::HNode>("h");
+    std.def_node::<layout::BoxNode>("box");
+    std.def_node::<layout::BlockNode>("block");
+    std.def_node::<layout::StackNode>("stack");
+    std.def_node::<layout::GridNode>("grid");
+    std.def_node::<layout::ColumnsNode>("columns");
+    std.def_node::<layout::ColbreakNode>("colbreak");
+    std.def_node::<layout::PlaceNode>("place");
+    std.def_node::<layout::AlignNode>("align");
+    std.def_node::<layout::PadNode>("pad");
+    std.def_node::<layout::RepeatNode>("repeat");
+    std.def_node::<layout::MoveNode>("move");
+    std.def_node::<layout::ScaleNode>("scale");
+    std.def_node::<layout::RotateNode>("rotate");
+    std.def_node::<layout::HideNode>("hide");
 
-    // Predefined colors.
+    // Visualize.
+    std.def_node::<visualize::ImageNode>("image");
+    std.def_node::<visualize::LineNode>("line");
+    std.def_node::<visualize::RectNode>("rect");
+    std.def_node::<visualize::SquareNode>("square");
+    std.def_node::<visualize::EllipseNode>("ellipse");
+    std.def_node::<visualize::CircleNode>("circle");
+
+    // Meta.
+    std.def_node::<meta::DocumentNode>("document");
+    std.def_node::<meta::RefNode>("ref");
+    std.def_node::<meta::LinkNode>("link");
+
+    // Compute.
+    std.def_fn("type", compute::type_);
+    std.def_fn("repr", compute::repr);
+    std.def_fn("assert", compute::assert);
+    std.def_fn("eval", compute::eval);
+    std.def_fn("int", compute::int);
+    std.def_fn("float", compute::float);
+    std.def_fn("luma", compute::luma);
+    std.def_fn("rgb", compute::rgb);
+    std.def_fn("cmyk", compute::cmyk);
+    std.def_fn("str", compute::str);
+    std.def_fn("label", compute::label);
+    std.def_fn("regex", compute::regex);
+    std.def_fn("range", compute::range);
+    std.def_fn("abs", compute::abs);
+    std.def_fn("min", compute::min);
+    std.def_fn("max", compute::max);
+    std.def_fn("even", compute::even);
+    std.def_fn("odd", compute::odd);
+    std.def_fn("mod", compute::mod_);
+    std.def_fn("csv", compute::csv);
+    std.def_fn("json", compute::json);
+    std.def_fn("xml", compute::xml);
+    std.def_fn("lorem", compute::lorem);
+    std.def_fn("numbering", compute::numbering);
+
+    // Colors.
     std.define("black", Color::BLACK);
     std.define("gray", Color::GRAY);
     std.define("silver", Color::SILVER);
@@ -167,7 +173,7 @@ fn items() -> LangItems {
         text_id: NodeId::of::<text::TextNode>(),
         text_str: |content| Some(&content.to::<text::TextNode>()?.0),
         smart_quote: |double| text::SmartQuoteNode { double }.pack(),
-        parbreak: || text::ParbreakNode.pack(),
+        parbreak: || layout::ParbreakNode.pack(),
         strong: |body| text::StrongNode(body).pack(),
         emph: |body| text::EmphNode(body).pack(),
         raw: |text, lang, block| {
@@ -177,15 +183,13 @@ fn items() -> LangItems {
                 None => content,
             }
         },
-        link: |url| text::LinkNode::from_url(url).pack(),
-        ref_: |target| structure::RefNode(target).pack(),
-        heading: |level, body| structure::HeadingNode { level, body }.pack(),
-        list_item: |body| structure::ListItem::List(Box::new(body)).pack(),
-        enum_item: |number, body| {
-            structure::ListItem::Enum(number, Box::new(body)).pack()
-        },
+        link: |url| meta::LinkNode::from_url(url).pack(),
+        ref_: |target| meta::RefNode(target).pack(),
+        heading: |level, body| basics::HeadingNode { level, body }.pack(),
+        list_item: |body| basics::ListItem::List(Box::new(body)).pack(),
+        enum_item: |number, body| basics::ListItem::Enum(number, Box::new(body)).pack(),
         desc_item: |term, body| {
-            structure::ListItem::Desc(Box::new(structure::DescItem { term, body })).pack()
+            basics::ListItem::Desc(Box::new(basics::DescItem { term, body })).pack()
         },
         math: |children, display| math::MathNode { children, display }.pack(),
         math_atom: |atom| math::AtomNode(atom).pack(),

library/src/meta/document.rs

@@ -1,7 +1,7 @@
 use crate::layout::{LayoutRoot, PageNode};
 use crate::prelude::*;
 
-/// The root node of the model.
+/// The root node that represents a full document.
 #[derive(Hash)]
 pub struct DocumentNode(pub StyleVec<PageNode>);
 

library/src/meta/link.rs

@@ -1,5 +1,5 @@
-use super::TextNode;
 use crate::prelude::*;
+use crate::text::TextNode;
 
 /// Link text and other elements to a destination.
 #[derive(Debug, Hash)]

library/src/meta/mod.rs

@@ -0,0 +1,9 @@
+//! Interaction between document parts.
+
+mod document;
+mod link;
+mod reference;
+
+pub use self::document::*;
+pub use self::link::*;
+pub use self::reference::*;

library/src/structure/mod.rs

@@ -1,13 +0,0 @@
-//! Document structuring.
-
-mod document;
-mod heading;
-mod list;
-mod reference;
-mod table;
-
-pub use self::document::*;
-pub use self::heading::*;
-pub use self::list::*;
-pub use self::reference::*;
-pub use self::table::*;

library/src/text/deco.rs

@@ -12,7 +12,7 @@ pub struct DecoNode<const L: DecoLine>(pub Content);
 pub type UnderlineNode = DecoNode<UNDERLINE>;
 
 /// Typeset stricken-through text.
-pub type StrikethroughNode = DecoNode<STRIKETHROUGH>;
+pub type StrikeNode = DecoNode<STRIKETHROUGH>;
 
 /// Typeset overlined text.
 pub type OverlineNode = DecoNode<OVERLINE>;
@@ -65,7 +65,7 @@ impl<const L: DecoLine> Show for DecoNode<L> {
 ///
 /// For more details, see [`DecoNode`].
 #[derive(Debug, Clone, Eq, PartialEq, Hash)]
-pub(super) struct Decoration {
+pub struct Decoration {
     pub line: DecoLine,
     pub stroke: PartialStroke<Abs>,
     pub offset: Smart<Abs>,

library/src/text/misc.rs

@@ -0,0 +1,146 @@
+use super::TextNode;
+use crate::prelude::*;
+
+/// A text space.
+#[derive(Debug, Hash)]
+pub struct SpaceNode;
+
+#[node(Unlabellable, Behave)]
+impl SpaceNode {
+    fn construct(_: &Vm, _: &mut Args) -> SourceResult<Content> {
+        Ok(Self.pack())
+    }
+}
+
+impl Unlabellable for SpaceNode {}
+
+impl Behave for SpaceNode {
+    fn behaviour(&self) -> Behaviour {
+        Behaviour::Weak(2)
+    }
+}
+
+/// A line break.
+#[derive(Debug, Hash)]
+pub struct LinebreakNode {
+    pub justify: bool,
+}
+
+#[node(Behave)]
+impl LinebreakNode {
+    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
+        let justify = args.named("justify")?.unwrap_or(false);
+        Ok(Self { justify }.pack())
+    }
+}
+
+impl Behave for LinebreakNode {
+    fn behaviour(&self) -> Behaviour {
+        Behaviour::Destructive
+    }
+}
+
+/// Strong content, rendered in boldface by default.
+#[derive(Debug, Hash)]
+pub struct StrongNode(pub Content);
+
+#[node(Show)]
+impl StrongNode {
+    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
+        Ok(Self(args.expect("body")?).pack())
+    }
+
+    fn field(&self, name: &str) -> Option<Value> {
+        match name {
+            "body" => Some(Value::Content(self.0.clone())),
+            _ => None,
+        }
+    }
+}
+
+impl Show for StrongNode {
+    fn show(&self, _: Tracked<dyn World>, _: StyleChain) -> Content {
+        self.0.clone().styled(TextNode::BOLD, Toggle)
+    }
+}
+
+/// Emphasized content, rendered with an italic font by default.
+#[derive(Debug, Hash)]
+pub struct EmphNode(pub Content);
+
+#[node(Show)]
+impl EmphNode {
+    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
+        Ok(Self(args.expect("body")?).pack())
+    }
+
+    fn field(&self, name: &str) -> Option<Value> {
+        match name {
+            "body" => Some(Value::Content(self.0.clone())),
+            _ => None,
+        }
+    }
+}
+
+impl Show for EmphNode {
+    fn show(&self, _: Tracked<dyn World>, _: StyleChain) -> Content {
+        self.0.clone().styled(TextNode::ITALIC, Toggle)
+    }
+}
+
+/// A toggle that turns on and off alternatingly if folded.
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+pub struct Toggle;
+
+impl Fold for Toggle {
+    type Output = bool;
+
+    fn fold(self, outer: Self::Output) -> Self::Output {
+        !outer
+    }
+}
+
+/// Convert a string or content to lowercase.
+pub fn lower(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    case(Case::Lower, args)
+}
+
+/// Convert a string or content to uppercase.
+pub fn upper(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    case(Case::Upper, args)
+}
+
+/// Change the case of text.
+fn case(case: Case, args: &mut Args) -> SourceResult<Value> {
+    let Spanned { v, span } = args.expect("string or content")?;
+    Ok(match v {
+        Value::Str(v) => Value::Str(case.apply(&v).into()),
+        Value::Content(v) => Value::Content(v.styled(TextNode::CASE, Some(case))),
+        v => bail!(span, "expected string or content, found {}", v.type_name()),
+    })
+}
+
+/// A case transformation on text.
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+pub enum Case {
+    /// Everything is lowercased.
+    Lower,
+    /// Everything is uppercased.
+    Upper,
+}
+
+impl Case {
+    /// Apply the case to a string.
+    pub fn apply(self, text: &str) -> String {
+        match self {
+            Self::Lower => text.to_lowercase(),
+            Self::Upper => text.to_uppercase(),
+        }
+    }
+}
+
+/// Display text in small capitals.
+pub fn smallcaps(_: &Vm, args: &mut Args) -> SourceResult<Value> {
+    let body: Content = args.expect("content")?;
+    Ok(Value::Content(body.styled(TextNode::SMALLCAPS, true)))
+}

library/src/text/mod.rs

@@ -1,16 +1,15 @@
-//! Text handling and paragraph layout.
+//! Text handling.
 
 mod deco;
-mod link;
-mod par;
+mod misc;
 mod quotes;
 mod raw;
 mod shaping;
 mod shift;
 
 pub use self::deco::*;
-pub use self::link::*;
-pub use self::par::*;
+pub use self::misc::*;
+pub use self::quotes::*;
 pub use self::raw::*;
 pub use self::shaping::*;
 pub use self::shift::*;
@@ -21,7 +20,7 @@ use rustybuzz::Tag;
 use typst::font::{FontMetrics, FontStretch, FontStyle, FontWeight, VerticalFontMetric};
 use typst::util::EcoString;
 
-use self::quotes::*;
+use crate::layout::ParNode;
 use crate::prelude::*;
 
 /// A single run of text with the same style.
@@ -114,19 +113,19 @@ impl TextNode {
 
     /// Whether the font weight should be increased by 300.
     #[property(skip, fold)]
-    const BOLD: Toggle = false;
+    pub const BOLD: Toggle = false;
     /// Whether the font style should be inverted.
     #[property(skip, fold)]
-    const ITALIC: Toggle = false;
+    pub const ITALIC: Toggle = false;
     /// A case transformation that should be applied to the text.
     #[property(skip)]
-    const CASE: Option<Case> = None;
+    pub const CASE: Option<Case> = None;
     /// Whether small capital glyphs should be used. ("smcp")
     #[property(skip)]
-    const SMALLCAPS: bool = false;
+    pub const SMALLCAPS: bool = false;
     /// Decorative lines.
     #[property(skip, fold)]
-    const DECO: Decoration = vec![];
+    pub const DECO: Decoration = vec![];
 
     fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
         // The text constructor is special: It doesn't create a text node.
@@ -409,161 +408,3 @@ impl Fold for FontFeatures {
         self
     }
 }
-
-/// A text space.
-#[derive(Debug, Hash)]
-pub struct SpaceNode;
-
-#[node(Unlabellable, Behave)]
-impl SpaceNode {
-    fn construct(_: &Vm, _: &mut Args) -> SourceResult<Content> {
-        Ok(Self.pack())
-    }
-}
-
-impl Unlabellable for SpaceNode {}
-
-impl Behave for SpaceNode {
-    fn behaviour(&self) -> Behaviour {
-        Behaviour::Weak(2)
-    }
-}
-
-/// A line break.
-#[derive(Debug, Hash)]
-pub struct LinebreakNode {
-    pub justify: bool,
-}
-
-#[node(Behave)]
-impl LinebreakNode {
-    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
-        let justify = args.named("justify")?.unwrap_or(false);
-        Ok(Self { justify }.pack())
-    }
-}
-
-impl Behave for LinebreakNode {
-    fn behaviour(&self) -> Behaviour {
-        Behaviour::Destructive
-    }
-}
-
-/// A smart quote.
-#[derive(Debug, Hash)]
-pub struct SmartQuoteNode {
-    pub double: bool,
-}
-
-#[node]
-impl SmartQuoteNode {
-    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
-        let double = args.named("double")?.unwrap_or(true);
-        Ok(Self { double }.pack())
-    }
-}
-
-/// Convert a string or content to lowercase.
-pub fn lower(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    case(Case::Lower, args)
-}
-
-/// Convert a string or content to uppercase.
-pub fn upper(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    case(Case::Upper, args)
-}
-
-/// Change the case of text.
-fn case(case: Case, args: &mut Args) -> SourceResult<Value> {
-    let Spanned { v, span } = args.expect("string or content")?;
-    Ok(match v {
-        Value::Str(v) => Value::Str(case.apply(&v).into()),
-        Value::Content(v) => Value::Content(v.styled(TextNode::CASE, Some(case))),
-        v => bail!(span, "expected string or content, found {}", v.type_name()),
-    })
-}
-
-/// A case transformation on text.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
-pub enum Case {
-    /// Everything is uppercased.
-    Upper,
-    /// Everything is lowercased.
-    Lower,
-}
-
-impl Case {
-    /// Apply the case to a string.
-    pub fn apply(self, text: &str) -> String {
-        match self {
-            Self::Upper => text.to_uppercase(),
-            Self::Lower => text.to_lowercase(),
-        }
-    }
-}
-
-/// Display text in small capitals.
-pub fn smallcaps(_: &Vm, args: &mut Args) -> SourceResult<Value> {
-    let body: Content = args.expect("content")?;
-    Ok(Value::Content(body.styled(TextNode::SMALLCAPS, true)))
-}
-
-/// Strong content, rendered in boldface by default.
-#[derive(Debug, Hash)]
-pub struct StrongNode(pub Content);
-
-#[node(Show)]
-impl StrongNode {
-    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
-        Ok(Self(args.expect("body")?).pack())
-    }
-
-    fn field(&self, name: &str) -> Option<Value> {
-        match name {
-            "body" => Some(Value::Content(self.0.clone())),
-            _ => None,
-        }
-    }
-}
-
-impl Show for StrongNode {
-    fn show(&self, _: Tracked<dyn World>, _: StyleChain) -> Content {
-        self.0.clone().styled(TextNode::BOLD, Toggle)
-    }
-}
-
-/// Emphasized content, rendered with an italic font by default.
-#[derive(Debug, Hash)]
-pub struct EmphNode(pub Content);
-
-#[node(Show)]
-impl EmphNode {
-    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
-        Ok(Self(args.expect("body")?).pack())
-    }
-
-    fn field(&self, name: &str) -> Option<Value> {
-        match name {
-            "body" => Some(Value::Content(self.0.clone())),
-            _ => None,
-        }
-    }
-}
-
-impl Show for EmphNode {
-    fn show(&self, _: Tracked<dyn World>, _: StyleChain) -> Content {
-        self.0.clone().styled(TextNode::ITALIC, Toggle)
-    }
-}
-
-/// A toggle that turns on and off alternatingly if folded.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
-pub struct Toggle;
-
-impl Fold for Toggle {
-    type Output = bool;
-
-    fn fold(self, outer: Self::Output) -> Self::Output {
-        !outer
-    }
-}

library/src/text/quotes.rs

@@ -1,10 +1,24 @@
 use typst::syntax::is_newline;
 
-use super::{Lang, Region};
+use crate::prelude::*;
+
+/// A smart quote.
+#[derive(Debug, Hash)]
+pub struct SmartQuoteNode {
+    pub double: bool,
+}
+
+#[node]
+impl SmartQuoteNode {
+    fn construct(_: &Vm, args: &mut Args) -> SourceResult<Content> {
+        let double = args.named("double")?.unwrap_or(true);
+        Ok(Self { double }.pack())
+    }
+}
 
 /// State machine for smart quote subtitution.
 #[derive(Debug, Clone)]
-pub(super) struct Quoter {
+pub struct Quoter {
     /// How many quotes have been opened.
     quote_depth: usize,
     /// Whether an opening quote might follow.
@@ -68,7 +82,7 @@ fn is_opening_bracket(c: char) -> bool {
 }
 
 /// Decides which quotes to subtitute smart quotes with.
-pub(super) struct Quotes<'s> {
+pub struct Quotes<'s> {
     /// The opening single quote.
     pub single_open: &'s str,
     /// The closing single quote.

library/src/text/shaping.rs

@@ -6,6 +6,7 @@ use typst::font::{Font, FontVariant};
 use typst::util::SliceExt;
 
 use super::*;
+use crate::meta::LinkNode;
 use crate::prelude::*;
 
 /// The result of shaping text.
@@ -13,7 +14,7 @@ use crate::prelude::*;
 /// This type contains owned or borrowed shaped text runs, which can be
 /// measured, used to reshape substrings more quickly and converted into a
 /// frame.
-pub(super) struct ShapedText<'a> {
+pub struct ShapedText<'a> {
     /// The text that was shaped.
     pub text: &'a str,
     /// The text direction.
@@ -32,7 +33,7 @@ pub(super) struct ShapedText<'a> {
 
 /// A single glyph resulting from shaping.
 #[derive(Debug, Clone)]
-pub(super) struct ShapedGlyph {
+pub struct ShapedGlyph {
     /// The font the glyph is contained in.
     pub font: Font,
     /// The glyph's index in the font.
@@ -314,7 +315,7 @@ struct ShapingContext<'a> {
 }
 
 /// Shape text into [`ShapedText`].
-pub(super) fn shape<'a>(
+pub fn shape<'a>(
     world: Tracked<dyn World>,
     text: &'a str,
     styles: StyleChain<'a>,

library/src/visualize/image.rs

@@ -2,8 +2,8 @@ use std::ffi::OsStr;
 
 use typst::image::{Image, ImageFormat, RasterFormat, VectorFormat};
 
+use crate::meta::LinkNode;
 use crate::prelude::*;
-use crate::text::LinkNode;
 
 /// Show a raster or vector graphic.
 #[derive(Debug, Hash)]

library/src/visualize/mod.rs

@@ -1,11 +1,9 @@
-//! Graphical elements and effects.
+//! Drawing and visualization.
 
-mod hide;
 mod image;
 mod line;
 mod shape;
 
-pub use self::hide::*;
 pub use self::image::*;
 pub use self::line::*;
 pub use self::shape::*;

library/src/visualize/shape.rs

@@ -1,7 +1,7 @@
 use std::f64::consts::SQRT_2;
 
+use crate::meta::LinkNode;
 use crate::prelude::*;
-use crate::text::LinkNode;
 
 /// A sizable and fillable shape with optional content.
 #[derive(Debug, Hash)]

src/model/mod.rs

@@ -1,4 +1,4 @@
-//! Document and computation model.
+//! Content and computation model.
 
 #[macro_use]
 mod library;

tests/README.md

@@ -3,7 +3,9 @@
 ## Directory structure
 Top level directory structure:
 - `src`: Testing code.
-- `typ`: Input files.
+- `typ`: Input files. The tests in `compiler` specifically test the compiler
+         while the others test the standard library (but also the compiler
+         indirectly).
 - `ref`: Reference images which the output is compared with to determine whether
          a test passed or failed.
 - `png`: PNG files produced by tests.