Remove Typesetter in favor of typeset function 🎯

benches/benchmarks.rs

@@ -3,10 +3,11 @@ use std::rc::Rc;
 
 use criterion::{criterion_group, criterion_main, Criterion};
 use fontdock::fs::{FsIndex, FsProvider};
+use futures_executor::block_on;
 
 use typstc::font::FontLoader;
 use typstc::parse::parse;
-use typstc::Typesetter;
+use typstc::typeset;
 
 const FONT_DIR: &str = "fonts";
 const COMA: &str = include_str!("../tests/coma.typ");
@@ -23,9 +24,11 @@ fn typesetting_benchmark(c: &mut Criterion) {
     let provider = FsProvider::new(files);
     let loader = FontLoader::new(Box::new(provider), descriptors);
     let loader = Rc::new(RefCell::new(loader));
-    let typesetter = Typesetter::new(loader.clone());
+
+    let style = Default::default();
+    let scope = typstc::library::_std();
     c.bench_function("typeset-coma", |b| {
-        b.iter(|| futures_executor::block_on(typesetter.typeset(COMA)))
+        b.iter(|| block_on(typeset(COMA, &style, &scope, Rc::clone(&loader))))
     });
 }
 

main/src/main.rs

@@ -10,7 +10,7 @@ use futures_executor::block_on;
 use typstc::export::pdf;
 use typstc::font::FontLoader;
 use typstc::parse::LineMap;
-use typstc::{Feedback, Pass, Typesetter};
+use typstc::{typeset, Feedback, Pass};
 
 fn main() {
     let args: Vec<_> = std::env::args().collect();
@@ -41,11 +41,12 @@ fn main() {
     let loader = FontLoader::new(Box::new(provider), descriptors);
     let loader = Rc::new(RefCell::new(loader));
 
-    let typesetter = Typesetter::new(loader.clone());
+    let style = Default::default();
+    let scope = typstc::library::_std();
     let Pass {
         output: layouts,
         feedback: Feedback { mut diagnostics, .. },
-    } = block_on(typesetter.typeset(&src));
+    } = block_on(typeset(&src, &style, &scope, Rc::clone(&loader)));
 
     if !diagnostics.is_empty() {
         diagnostics.sort();

src/export/pdf.rs

@@ -14,8 +14,7 @@ use tide::{PdfWriter, Rect, Ref, Trailer, Version};
 use ttf_parser::{name_id, GlyphId};
 
 use crate::font::FontLoader;
-use crate::layout::elements::LayoutElement;
-use crate::layout::BoxLayout;
+use crate::layout::{BoxLayout, LayoutElement};
 use crate::length::Length;
 
 /// Export a list of layouts into a _PDF_ document.

src/layout/line.rs

@@ -8,7 +8,6 @@
 //! Internally, the line layouter uses a stack layouter to stack the finished
 //! lines on top of each.
 
-use super::stack::{StackContext, StackLayouter};
 use super::*;
 
 /// Performs the line layouting.

src/layout/mod.rs

@@ -1,13 +1,17 @@
 //! Layouting of syntax trees into box layouts.
 
-pub mod elements;
-pub mod line;
 pub mod primitive;
-pub mod stack;
+
+mod elements;
+mod line;
+mod stack;
 mod tree;
 
+pub use elements::*;
+pub use line::*;
 pub use primitive::*;
-pub use tree::layout_tree as layout;
+pub use stack::*;
+pub use tree::*;
 
 use crate::geom::{Insets, Point, Rect, RectExt, Sides, Size, SizeExt};
 
@@ -15,8 +19,33 @@ use crate::eval::Scope;
 use crate::font::SharedFontLoader;
 use crate::style::{LayoutStyle, PageStyle, TextStyle};
 use crate::syntax::SynTree;
+use crate::Pass;
 
-use elements::LayoutElements;
+/// Layout a syntax tree and return the produced layout.
+pub async fn layout(
+    tree: &SynTree,
+    style: &LayoutStyle,
+    scope: &Scope,
+    loader: SharedFontLoader,
+) -> Pass<MultiLayout> {
+    let space = LayoutSpace {
+        size: style.page.size,
+        insets: style.page.insets(),
+        expansion: LayoutExpansion::new(true, true),
+    };
+    tree::layout_tree(&tree, LayoutContext {
+        loader,
+        scope,
+        style,
+        base: space.usable(),
+        spaces: vec![space],
+        repeat: true,
+        sys: LayoutSystem::new(Dir::LTR, Dir::TTB),
+        align: LayoutAlign::new(GenAlign::Start, GenAlign::Start),
+        root: true,
+    })
+    .await
+}
 
 /// A collection of layouts.
 pub type MultiLayout = Vec<BoxLayout>;
@@ -36,7 +65,7 @@ pub struct BoxLayout {
 #[derive(Debug, Clone)]
 pub struct LayoutContext<'a> {
     /// The font loader to query fonts from when typesetting text.
-    pub loader: &'a SharedFontLoader,
+    pub loader: SharedFontLoader,
     /// The function scope.
     pub scope: &'a Scope,
     /// The style for pages and text.

src/layout/tree.rs

@@ -1,6 +1,7 @@
 //! Layouting of syntax trees.
 
-use super::line::{LineContext, LineLayouter};
+use std::rc::Rc;
+
 use super::*;
 use crate::shaping;
 use crate::style::LayoutStyle;
@@ -9,7 +10,7 @@ use crate::syntax::{
 };
 use crate::{DynFuture, Feedback, Pass};
 
-/// Layout a syntax tree into a collection of boxes.
+/// Layout a syntax tree in a given context.
 pub async fn layout_tree(tree: &SynTree, ctx: LayoutContext<'_>) -> Pass<MultiLayout> {
     let mut layouter = TreeLayouter::new(ctx);
     layouter.layout_tree(tree).await;
@@ -159,6 +160,7 @@ impl<'a> TreeLayouter<'a> {
             style: &self.style,
             spaces: self.layouter.remaining(),
             root: false,
+            loader: Rc::clone(&self.ctx.loader),
             ..self.ctx
         };
 

src/lib.rs

@@ -46,78 +46,21 @@ use std::pin::Pin;
 use crate::diagnostic::Diagnostic;
 use crate::eval::{Scope, Value};
 use crate::font::SharedFontLoader;
-use crate::layout::{
-    layout, Commands, Dir, GenAlign, LayoutAlign, LayoutContext, LayoutExpansion,
-    LayoutSpace, LayoutSystem, MultiLayout,
-};
-use crate::style::{LayoutStyle, PageStyle, TextStyle};
-use crate::syntax::{Decoration, Offset, Pos, SpanVec, SynTree};
+use crate::layout::{Commands, MultiLayout};
+use crate::style::LayoutStyle;
+use crate::syntax::{Decoration, Offset, Pos, SpanVec};
 
-/// Transforms source code into typesetted layouts.
-///
-/// A typesetter can be configured through various methods.
-pub struct Typesetter {
-    /// The font loader shared by all typesetting processes.
+/// Process source code directly into a collection of layouts.
+pub async fn typeset(
+    src: &str,
+    style: &LayoutStyle,
+    scope: &Scope,
     loader: SharedFontLoader,
-    /// A scope that contains the standard library function definitions.
-    std: Scope,
-    /// The base layouting style.
-    style: LayoutStyle,
-}
-
-impl Typesetter {
-    /// Create a new typesetter.
-    pub fn new(loader: SharedFontLoader) -> Self {
-        Self {
-            loader,
-            std: crate::library::_std(),
-            style: LayoutStyle::default(),
-        }
-    }
-
-    /// Set the base text style.
-    pub fn set_text_style(&mut self, style: TextStyle) {
-        self.style.text = style;
-    }
-
-    /// Set the base page style.
-    pub fn set_page_style(&mut self, style: PageStyle) {
-        self.style.page = style;
-    }
-
-    /// Parse source code into a syntax tree.
-    pub fn parse(&self, src: &str) -> Pass<SynTree> {
-        parse::parse(src)
-    }
-
-    /// Layout a syntax tree and return the produced layout.
-    pub async fn layout(&self, tree: &SynTree) -> Pass<MultiLayout> {
-        let space = LayoutSpace {
-            size: self.style.page.size,
-            insets: self.style.page.insets(),
-            expansion: LayoutExpansion::new(true, true),
-        };
-        layout(&tree, LayoutContext {
-            loader: &self.loader,
-            scope: &self.std,
-            style: &self.style,
-            base: space.usable(),
-            spaces: vec![space],
-            repeat: true,
-            sys: LayoutSystem::new(Dir::LTR, Dir::TTB),
-            align: LayoutAlign::new(GenAlign::Start, GenAlign::Start),
-            root: true,
-        })
-        .await
-    }
-
-    /// Process source code directly into a collection of layouts.
-    pub async fn typeset(&self, src: &str) -> Pass<MultiLayout> {
-        let parsed = self.parse(src);
-        let layouted = self.layout(&parsed.output).await;
-        let feedback = Feedback::merge(parsed.feedback, layouted.feedback);
-        Pass::new(layouted.output, feedback)
-    }
+) -> Pass<MultiLayout> {
+    let parsed = parse::parse(src);
+    let layouted = layout::layout(&parsed.output, style, scope, loader).await;
+    let feedback = Feedback::merge(parsed.feedback, layouted.feedback);
+    Pass::new(layouted.output, feedback)
 }
 
 /// A dynamic future type which allows recursive invocation of async functions

src/library/boxed.rs

@@ -33,7 +33,7 @@ pub async fn boxed(
         ctx.spaces[0].expansion.vertical = true;
     }
 
-    let layouted = layout(&content, ctx).await;
+    let layouted = layout_tree(&content, ctx).await;
     let layout = layouted.output.into_iter().next().unwrap();
     f.extend(layouted.feedback);
 

src/prelude.rs

@@ -4,7 +4,7 @@
 pub use crate::eval::{Dict, DictValue, Value};
 pub use crate::layout::primitive::*;
 #[doc(no_inline)]
-pub use crate::layout::{layout, Command, Commands, LayoutContext};
+pub use crate::layout::{layout_tree, Command, Commands, LayoutContext};
 #[doc(no_inline)]
 pub use crate::syntax::{Span, Spanned, SynTree};
 pub use crate::{Feedback, Pass};

src/shaping.rs

@@ -9,8 +9,7 @@ use ttf_parser::GlyphId;
 
 use crate::font::FontLoader;
 use crate::geom::{Point, Size};
-use crate::layout::elements::{LayoutElement, LayoutElements, Shaped};
-use crate::layout::{BoxLayout, Dir, LayoutAlign};
+use crate::layout::{BoxLayout, Dir, LayoutAlign, LayoutElement, LayoutElements, Shaped};
 use crate::style::TextStyle;
 
 /// Shape text into a box.

tests/test_typeset.rs

@@ -13,14 +13,10 @@ use ttf_parser::OutlineBuilder;
 
 use typstc::export::pdf;
 use typstc::font::{FontLoader, SharedFontLoader};
-use typstc::geom::{Point, Sides, Size, Vec2};
-use typstc::layout::elements::{LayoutElement, Shaped};
-use typstc::layout::MultiLayout;
-use typstc::length::Length;
-use typstc::paper::PaperClass;
+use typstc::geom::{Point, Vec2};
+use typstc::layout::{LayoutElement, MultiLayout, Shaped};
 use typstc::parse::LineMap;
-use typstc::style::PageStyle;
-use typstc::{Feedback, Pass, Typesetter};
+use typstc::{typeset, Feedback, Pass};
 
 const TEST_DIR: &str = "tests";
 const OUT_DIR: &str = "tests/out";
@@ -65,32 +61,20 @@ fn main() {
     let loader = FontLoader::new(Box::new(provider), descriptors);
     let loader = Rc::new(RefCell::new(loader));
 
-    let mut typesetter = Typesetter::new(loader.clone());
-    let edge = Length::pt(250.0).as_raw();
-    typesetter.set_page_style(PageStyle {
-        class: PaperClass::Custom,
-        size: Size::new(edge, edge),
-        margins: Sides::uniform(None),
-    });
-
     for (name, path, src) in filtered {
-        test(&name, &src, &path, &mut typesetter, &loader)
+        test(&name, &src, &path, &loader)
     }
 }
 
-fn test(
-    name: &str,
-    src: &str,
-    src_path: &Path,
-    typesetter: &mut Typesetter,
-    loader: &SharedFontLoader,
-) {
+fn test(name: &str, src: &str, src_path: &Path, loader: &SharedFontLoader) {
     println!("Testing {}.", name);
 
+    let style = Default::default();
+    let scope = typstc::library::_std();
     let Pass {
         output: layouts,
         feedback: Feedback { mut diagnostics, .. },
-    } = block_on(typesetter.typeset(&src));
+    } = block_on(typeset(&src, &style, &scope, Rc::clone(loader)));
 
     if !diagnostics.is_empty() {
         diagnostics.sort();