Move binary into separate crate and tidy dependencies 🎭

12 files changed, 67 insertions, 35 deletions

diff --git a/Cargo.toml b/Cargo.toml
index e0563b5c..e0495df4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,27 +1,29 @@
 [package]
 name = "typstc"
 version = "0.1.0"
-authors = ["Laurenz Mädje <laurmaedje@gmail.com>"]
+authors = ["The Typst Project Developers"]
 edition = "2018"
 
+[workspace]
+members = ["main"]
+
 [dependencies]
 async-trait = "0.1"
 fontdock = { path = "../fontdock", features = ["fs", "serialize"] }
-serde = { version = "1", features = ["derive"] }
-serde_json = "1"
-smallvec = "1"
+serde = { version = "1", features = ["derive"], optional = true }
 tide = { path = "../tide" }
 ttf-parser = "0.8.2"
 unicode-xid = "0.2"
-futures-executor = { version = "0.3", optional = true }
 
-[[bin]]
-name = "typst"
-path = "src/bin/main.rs"
-required-features = ["futures-executor"]
+[features]
+serialize = []
+
+[dev-dependencies]
+futures-executor = "0.3"
+serde_json = "1"
 
 [[test]]
 name = "typeset"
 path = "tests/src/typeset.rs"
 harness = false
-required-features = ["futures-executor"]
+required-features = ["serialize"]
diff --git a/main/Cargo.toml b/main/Cargo.toml
new file mode 100644
index 00000000..dcb75981
--- /dev/null
+++ b/main/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "typstc-main"
+version = "0.1.0"
+authors = ["The Typst Project Developers"]
+edition = "2018"
+
+[dependencies]
+typstc = { path = ".." }
+fontdock = { path = "../../fontdock", features = ["fs"] }
+futures-executor = "0.3"
+
+[[bin]]
+name = "typstc-main"
+path = "main.rs"
diff --git a/src/bin/main.rs b/main/main.rs
index 6d115c1e..a04b163c 100644
--- a/src/bin/main.rs
+++ b/main/main.rs
@@ -22,9 +22,7 @@ fn main() {
 fn run() -> Result<(), Box<dyn Error>> {
     let args: Vec<String> = std::env::args().collect();
     if args.len() < 2 || args.len() > 3 {
-        println!("typst");
-        println!("usage: {} source [destination]",
-            args.first().map(|s| s.as_str()).unwrap_or("typst"));
+        println!("Usage: typst src.typ [out.pdf]");
         std::process::exit(0);
     }
 
diff --git a/src/diagnostic.rs b/src/diagnostic.rs
index a5c5d0b8..fc332aac 100644
--- a/src/diagnostic.rs
+++ b/src/diagnostic.rs
@@ -4,14 +4,17 @@
 //! layout. However, this is a best effort process and bad things will still
 //! generate errors and warnings.
 
+#[cfg(feature = "serialize")]
 use serde::Serialize;
+
 use crate::syntax::span::SpanVec;
 
 /// A list of spanned diagnostics.
 pub type Diagnostics = SpanVec<Diagnostic>;
 
 /// A diagnostic that arose in parsing or layouting.
-#[derive(Debug, Clone, Eq, PartialEq, Serialize)]
+#[derive(Debug, Clone, Eq, PartialEq)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Diagnostic {
     /// How severe / important the diagnostic is.
     pub level: Level,
@@ -20,8 +23,9 @@ pub struct Diagnostic {
 }
 
 /// How severe / important a diagnostic is.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize)]
-#[serde(rename_all = "camelCase")]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
+#[cfg_attr(feature = "serialize", serde(rename_all = "camelCase"))]
 pub enum Level {
     Warning,
     Error,
diff --git a/src/geom.rs b/src/geom.rs
index 557d244c..f5f818a4 100644
--- a/src/geom.rs
+++ b/src/geom.rs
@@ -3,11 +3,14 @@
 use std::fmt::{self, Debug, Formatter};
 use std::ops::*;
 
+#[cfg(feature = "serialize")]
 use serde::Serialize;
+
 use crate::layout::prelude::*;
 
 /// A value in two dimensions.
-#[derive(Default, Copy, Clone, Eq, PartialEq, Serialize)]
+#[derive(Default, Copy, Clone, Eq, PartialEq)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Value2<T> {
     /// The horizontal component.
     pub x: T,
@@ -176,7 +179,8 @@ impl Neg for Size {
 }
 
 /// A value in four dimensions.
-#[derive(Debug, Default, Copy, Clone, Eq, PartialEq, Serialize)]
+#[derive(Debug, Default, Copy, Clone, Eq, PartialEq)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Value4<T> {
     /// The left extent.
     pub left: T,
diff --git a/src/layout/actions.rs b/src/layout/actions.rs
index 89c10285..7a32a46a 100644
--- a/src/layout/actions.rs
+++ b/src/layout/actions.rs
@@ -1,9 +1,11 @@
 //! Drawing and configuration actions composing layouts.
 
 use std::fmt::{self, Debug, Formatter};
+
+#[cfg(feature = "serialize")]
 use serde::ser::{Serialize, Serializer, SerializeTuple};
-use fontdock::FaceId;
 
+use fontdock::FaceId;
 use crate::geom::Size;
 use super::Layout;
 use self::LayoutAction::*;
@@ -22,6 +24,7 @@ pub enum LayoutAction {
     DebugBox(Size),
 }
 
+#[cfg(feature = "serialize")]
 impl Serialize for LayoutAction {
     fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
         match self {
diff --git a/src/layout/mod.rs b/src/layout/mod.rs
index 510f504a..64a2825b 100644
--- a/src/layout/mod.rs
+++ b/src/layout/mod.rs
@@ -1,10 +1,11 @@
 //! Layouting types and engines.
 
 use std::fmt::{self, Display, Formatter};
-use smallvec::SmallVec;
+
+#[cfg(feature = "serialize")]
 use serde::Serialize;
-use fontdock::FaceId;
 
+use fontdock::FaceId;
 use crate::geom::{Size, Margins};
 use self::prelude::*;
 
@@ -31,12 +32,13 @@ pub mod prelude {
 pub type MultiLayout = Vec<Layout>;
 
 /// A finished box with content at fixed positions.
-#[derive(Debug, Clone, PartialEq, Serialize)]
+#[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Layout {
     /// The size of the box.
     pub dimensions: Size,
     /// How to align this layout in a parent container.
-    #[serde(skip)]
+    #[cfg_attr(feature = "serialize", serde(skip))]
     pub align: LayoutAlign,
     /// The actions composing this layout.
     pub actions: Vec<LayoutAction>,
@@ -59,7 +61,7 @@ impl Layout {
 
 /// A vector of layout spaces, that is stack allocated as long as it only
 /// contains at most 2 spaces.
-pub type LayoutSpaces = SmallVec<[LayoutSpace; 2]>;
+pub type LayoutSpaces = Vec<LayoutSpace>;
 
 /// The space into which content is laid out.
 #[derive(Debug, Copy, Clone, PartialEq)]
diff --git a/src/layout/model.rs b/src/layout/model.rs
index 08a9ec0e..bde451e6 100644
--- a/src/layout/model.rs
+++ b/src/layout/model.rs
@@ -4,7 +4,6 @@
 
 use std::future::Future;
 use std::pin::Pin;
-use smallvec::smallvec;
 
 use crate::{Pass, Feedback};
 use crate::SharedFontLoader;
@@ -271,7 +270,7 @@ impl<'a> ModelLayouter<'a> {
                     // new page style and update it within the layouter.
                     let margins = style.margins();
                     self.ctx.base = style.dimensions.unpadded(margins);
-                    self.layouter.set_spaces(smallvec![
+                    self.layouter.set_spaces(vec![
                         LayoutSpace {
                             dimensions: style.dimensions,
                             padding: margins,
diff --git a/src/layout/stack.rs b/src/layout/stack.rs
index e684a6ab..48c7b40a 100644
--- a/src/layout/stack.rs
+++ b/src/layout/stack.rs
@@ -21,7 +21,6 @@
 //! The position of the first aligned box thus depends on the length of the
 //! sentence in the second box.
 
-use smallvec::smallvec;
 use crate::geom::Value4;
 use super::*;
 
@@ -248,7 +247,7 @@ impl StackLayouter {
     pub fn remaining(&self) -> LayoutSpaces {
         let dimensions = self.usable();
 
-        let mut spaces = smallvec![LayoutSpace {
+        let mut spaces = vec![LayoutSpace {
             dimensions,
             padding: Margins::ZERO,
             expansion: LayoutExpansion::new(false, false),
diff --git a/src/lib.rs b/src/lib.rs
index a295e152..6f8ea074 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -17,7 +17,6 @@
 //!   serialized to pass it to a suitable renderer.
 
 use std::fmt::Debug;
-use smallvec::smallvec;
 
 use crate::diagnostic::Diagnostics;
 use crate::font::SharedFontLoader;
@@ -109,7 +108,7 @@ impl Typesetter {
                 loader: &self.loader,
                 style: &self.style,
                 base: self.style.page.dimensions.unpadded(margins),
-                spaces: smallvec![LayoutSpace {
+                spaces: vec![LayoutSpace {
                     dimensions: self.style.page.dimensions,
                     padding: margins,
                     expansion: LayoutExpansion::new(true, true),
diff --git a/src/syntax/decoration.rs b/src/syntax/decoration.rs
index ab327237..13a9ad36 100644
--- a/src/syntax/decoration.rs
+++ b/src/syntax/decoration.rs
@@ -1,14 +1,17 @@
 //! Decorations for semantic syntax highlighting.
 
+#[cfg(feature = "serialize")]
 use serde::Serialize;
+
 use super::span::SpanVec;
 
 /// A list of spanned decorations.
 pub type Decorations = SpanVec<Decoration>;
 
 /// Decorations for semantic syntax highlighting.
-#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash, Serialize)]
-#[serde(rename_all = "camelCase")]
+#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
+#[cfg_attr(feature = "serialize", serde(rename_all = "camelCase"))]
 pub enum Decoration {
     /// A valid function name.
     /// ```typst
diff --git a/src/syntax/span.rs b/src/syntax/span.rs
index 52b90cee..9b3c7d24 100644
--- a/src/syntax/span.rs
+++ b/src/syntax/span.rs
@@ -2,6 +2,8 @@
 
 use std::fmt::{self, Debug, Formatter};
 use std::ops::{Add, Sub};
+
+#[cfg(feature = "serialize")]
 use serde::Serialize;
 
 /// Span offsetting.
@@ -23,7 +25,8 @@ impl<T> Offset for SpanVec<T> {
 }
 
 /// A value with the span it corresponds to in the source code.
-#[derive(Copy, Clone, Eq, PartialEq, Hash, Serialize)]
+#[derive(Copy, Clone, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Spanned<T> {
     /// The value.
     pub v: T,
@@ -77,7 +80,8 @@ impl<T: Debug> Debug for Spanned<T> {
 }
 
 /// Locates a slice of source code.
-#[derive(Copy, Clone, Eq, PartialEq, Hash, Serialize)]
+#[derive(Copy, Clone, Eq, PartialEq, Hash)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Span {
     /// The inclusive start position.
     pub start: Pos,
@@ -129,7 +133,8 @@ impl Debug for Span {
 }
 
 /// Zero-indexed line-column position in source code.
-#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Serialize)]
+#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[cfg_attr(feature = "serialize", derive(Serialize))]
 pub struct Pos {
     /// The zero-indexed line.
     pub line: usize,