1 files changed, 105 insertions, 0 deletions
diff --git a/crates/typst-layout/src/inline/mod.rs b/crates/typst-layout/src/inline/mod.rs
new file mode 100644
index 00000000..658e3084
--- /dev/null
+++ b/crates/typst-layout/src/inline/mod.rs
@@ -0,0 +1,105 @@
+#[path = "box.rs"]
+mod box_;
+mod collect;
+mod deco;
+mod finalize;
+mod line;
+mod linebreak;
+mod prepare;
+mod shaping;
+
+pub use self::box_::layout_box;
+
+use comemo::{Track, Tracked, TrackedMut};
+use typst_library::diag::SourceResult;
+use typst_library::engine::{Engine, Route, Sink, Traced};
+use typst_library::foundations::{StyleChain, StyleVec};
+use typst_library::introspection::{Introspector, Locator, LocatorLink};
+use typst_library::layout::{Fragment, Size};
+use typst_library::model::ParElem;
+use typst_library::routines::Routines;
+use typst_library::World;
+
+use self::collect::{collect, Item, Segment, SpanMapper};
+use self::deco::decorate;
+use self::finalize::finalize;
+use self::line::{commit, line, Line};
+use self::linebreak::{linebreak, Breakpoint};
+use self::prepare::{prepare, Preparation};
+use self::shaping::{
+    cjk_punct_style, is_of_cj_script, shape_range, ShapedGlyph, ShapedText,
+    BEGIN_PUNCT_PAT, END_PUNCT_PAT,
+};
+
+/// Range of a substring of text.
+type Range = std::ops::Range<usize>;
+
+/// Layouts content inline.
+pub fn layout_inline(
+    engine: &mut Engine,
+    children: &StyleVec,
+    locator: Locator,
+    styles: StyleChain,
+    consecutive: bool,
+    region: Size,
+    expand: bool,
+) -> SourceResult<Fragment> {
+    layout_inline_impl(
+        children,
+        engine.routines,
+        engine.world,
+        engine.introspector,
+        engine.traced,
+        TrackedMut::reborrow_mut(&mut engine.sink),
+        engine.route.track(),
+        locator.track(),
+        styles,
+        consecutive,
+        region,
+        expand,
+    )
+}
+
+/// The internal, memoized implementation of `layout_inline`.
+#[comemo::memoize]
+#[allow(clippy::too_many_arguments)]
+fn layout_inline_impl(
+    children: &StyleVec,
+    routines: &Routines,
+    world: Tracked<dyn World + '_>,
+    introspector: Tracked<Introspector>,
+    traced: Tracked<Traced>,
+    sink: TrackedMut<Sink>,
+    route: Tracked<Route>,
+    locator: Tracked<Locator>,
+    styles: StyleChain,
+    consecutive: bool,
+    region: Size,
+    expand: bool,
+) -> SourceResult<Fragment> {
+    let link = LocatorLink::new(locator);
+    let locator = Locator::link(&link);
+    let mut engine = Engine {
+        routines,
+        world,
+        introspector,
+        traced,
+        sink,
+        route: Route::extend(route),
+    };
+
+    let mut locator = locator.split();
+
+    // Collect all text into one string for BiDi analysis.
+    let (text, segments, spans) =
+        collect(children, &mut engine, &mut locator, &styles, region, consecutive)?;
+
+    // Perform BiDi analysis and then prepares paragraph layout.
+    let p = prepare(&mut engine, children, &text, segments, spans, styles)?;
+
+    // Break the paragraph into lines.
+    let lines = linebreak(&engine, &p, region.x - p.hang);
+
+    // Turn the selected lines into frames.
+    finalize(&mut engine, &p, &lines, styles, region, expand, &mut locator)
+}