New raw theme & nicer debug representation

src/eval/func.rs

@@ -1,4 +1,4 @@
-use std::fmt::{self, Debug, Formatter, Write};
+use std::fmt::{self, Debug, Formatter};
 use std::hash::{Hash, Hasher};
 use std::sync::Arc;
 
@@ -119,12 +119,10 @@ impl Func {
 
 impl Debug for Func {
     fn fmt(&self, f: &mut Formatter) -> fmt::Result {
-        f.write_str("<function")?;
-        if let Some(name) = self.name() {
-            f.write_char(' ')?;
-            f.write_str(name)?;
+        match self.name() {
+            Some(name) => f.write_str(name),
+            None => f.write_str("(..) => {..}"),
         }
-        f.write_char('>')
     }
 }
 

src/eval/value.rs

@@ -122,8 +122,9 @@ impl Value {
             Value::Content(v) => v,
 
             // For values which can't be shown "naturally", we return the raw
-            // representation.
-            v => Content::show(RawNode { text: v.repr(), block: false }),
+            // representation with typst code syntax highlighting.
+            v => Content::show(RawNode { text: v.repr(), block: false })
+                .styled(RawNode::LANG, Some("typc".into())),
         }
     }
 }
@@ -149,7 +150,7 @@ impl Debug for Value {
             Self::Fraction(v) => Debug::fmt(v, f),
             Self::Color(v) => Debug::fmt(v, f),
             Self::Str(v) => Debug::fmt(v, f),
-            Self::Content(_) => f.pad("<content>"),
+            Self::Content(_) => f.pad("[...]"),
             Self::Array(v) => Debug::fmt(v, f),
             Self::Dict(v) => Debug::fmt(v, f),
             Self::Func(v) => Debug::fmt(v, f),
@@ -720,7 +721,10 @@ mod tests {
             "30% + 56.69pt",
         );
         test(Fraction::one() * 7.55, "7.55fr");
-        test(Color::Rgba(RgbaColor::new(1, 1, 1, 0xff)), "#010101");
+        test(
+            Color::Rgba(RgbaColor::new(1, 1, 1, 0xff)),
+            "rgb(\"#010101\")",
+        );
 
         // Collections.
         test("hello", r#""hello""#);
@@ -734,13 +738,9 @@ mod tests {
         test(dict!["one" => 1], "(one: 1)");
         test(dict!["two" => false, "one" => 1], "(one: 1, two: false)");
 
-        // Functions.
-        test(
-            Func::from_fn("nil", |_, _| Ok(Value::None)),
-            "<function nil>",
-        );
-
-        // Dynamics.
+        // Functions, content and dynamics.
+        test(Content::Text("a".into()), "[...]");
+        test(Func::from_fn("nil", |_, _| Ok(Value::None)), "nil");
         test(Dynamic::new(1), "1");
     }
 }

src/geom/paint.rs

@@ -154,7 +154,7 @@ impl FromStr for RgbaColor {
 
 impl From<SynColor> for RgbaColor {
     fn from(color: SynColor) -> Self {
-        Self::new(color.r, color.b, color.g, color.a)
+        Self::new(color.r, color.g, color.b, color.a)
     }
 }
 
@@ -167,10 +167,11 @@ impl Debug for RgbaColor {
                 self.r, self.g, self.b, self.a,
             )?;
         } else {
-            write!(f, "#{:02x}{:02x}{:02x}", self.r, self.g, self.b)?;
+            write!(f, "rgb(\"#{:02x}{:02x}{:02x}", self.r, self.g, self.b)?;
             if self.a != 255 {
                 write!(f, "{:02x}", self.a)?;
             }
+            write!(f, "\")")?;
         }
         Ok(())
     }

src/library/text/raw.rs

@@ -1,20 +1,17 @@
+use std::sync::Arc;
+
 use once_cell::sync::Lazy;
 use syntect::easy::HighlightLines;
-use syntect::highlighting::{FontStyle, Highlighter, Style, Theme, ThemeSet};
+use syntect::highlighting::{
+    Color, FontStyle, Highlighter, Style, StyleModifier, Theme, ThemeItem, ThemeSettings,
+};
 use syntect::parsing::SyntaxSet;
 
 use super::{FontFamily, Hyphenate, TextNode, Toggle};
 use crate::library::layout::BlockSpacing;
 use crate::library::prelude::*;
 use crate::source::SourceId;
-use crate::syntax::{self, RedNode};
-
-/// The lazily-loaded theme used for syntax highlighting.
-static THEME: Lazy<Theme> =
-    Lazy::new(|| ThemeSet::load_defaults().themes.remove("InspiredGitHub").unwrap());
-
-/// The lazily-loaded syntect syntax definitions.
-static SYNTAXES: Lazy<SyntaxSet> = Lazy::new(|| SyntaxSet::load_defaults_newlines());
+use crate::syntax::{self, GreenNode, NodeKind, RedNode};
 
 /// Monospaced text with optional syntax highlighting.
 #[derive(Debug, Hash)]
@@ -63,7 +60,7 @@ impl Show for RawNode {
     }
 
     fn realize(&self, _: &mut Context, styles: StyleChain) -> TypResult<Content> {
-        let lang = styles.get(Self::LANG).as_ref();
+        let lang = styles.get(Self::LANG).as_ref().map(|s| s.to_lowercase());
         let foreground = THEME
             .settings
             .foreground
@@ -71,15 +68,19 @@ impl Show for RawNode {
             .unwrap_or(Color::BLACK)
             .into();
 
-        let mut realized = if matches!(
-            lang.map(|s| s.to_lowercase()).as_deref(),
-            Some("typ" | "typst")
-        ) {
-            let mut seq = vec![];
-            let green = crate::parse::parse(&self.text);
-            let red = RedNode::from_root(green, SourceId::from_raw(0));
+        let mut realized = if matches!(lang.as_deref(), Some("typ" | "typst" | "typc")) {
+            let root = match lang.as_deref() {
+                Some("typc") => {
+                    let children = crate::parse::parse_code(&self.text);
+                    Arc::new(GreenNode::with_children(NodeKind::CodeBlock, children))
+                }
+                _ => crate::parse::parse(&self.text),
+            };
+
+            let red = RedNode::from_root(root, SourceId::from_raw(0));
             let highlighter = Highlighter::new(&THEME);
 
+            let mut seq = vec![];
             syntax::highlight_syntect(red.as_ref(), &highlighter, &mut |range, style| {
                 seq.push(styled(&self.text[range], foreground, style));
             });
@@ -159,3 +160,44 @@ fn styled(piece: &str, foreground: Paint, style: Style) -> Content {
 
     body.styled_with_map(styles)
 }
+
+/// The lazily-loaded syntect syntax definitions.
+static SYNTAXES: Lazy<SyntaxSet> = Lazy::new(|| SyntaxSet::load_defaults_newlines());
+
+/// The lazily-loaded theme used for syntax highlighting.
+#[rustfmt::skip]
+static THEME: Lazy<Theme> = Lazy::new(|| Theme {
+    name: Some("Typst Light".into()),
+    author: Some("The Typst Project Developers".into()),
+    settings: ThemeSettings::default(),
+    scopes: vec![
+        item("markup.bold", None, Some(FontStyle::BOLD)),
+        item("markup.italic", None, Some(FontStyle::ITALIC)),
+        item("markup.heading, entity.name.section", None, Some(FontStyle::BOLD)),
+        item("markup.raw", Some("#818181"), None),
+        item("markup.list", Some("#8b41b1"), None),
+        item("comment", Some("#8a8a8a"), None),
+        item("keyword, constant.language, variable.language", Some("#d73a49"), None),
+        item("storage.type, storage.modifier", Some("#d73a49"), None),
+        item("entity.other", Some("#8b41b1"), None),
+        item("entity.name, variable.function, support", Some("#4b69c6"), None),
+        item("support.macro", Some("#16718d"), None),
+        item("meta.annotation", Some("#301414"), None),
+        item("constant", Some("#b60157"), None),
+        item("string", Some("#298e0d"), None),
+        item("punctuation.shortcut", Some("#1d6c76"), None),
+        item("constant.character.escape", Some("#1d6c76"), None),
+    ],
+});
+
+/// Create a syntect theme item.
+fn item(scope: &str, color: Option<&str>, font_style: Option<FontStyle>) -> ThemeItem {
+    ThemeItem {
+        scope: scope.parse().unwrap(),
+        style: StyleModifier {
+            foreground: color.map(|s| s.parse().unwrap()),
+            background: None,
+            font_style,
+        },
+    }
+}

src/parse/mod.rs

@@ -26,6 +26,13 @@ pub fn parse(src: &str) -> Arc<GreenNode> {
     }
 }
 
+/// Parse code directly, only used for syntax highlighting.
+pub fn parse_code(src: &str) -> Vec<Green> {
+    let mut p = Parser::new(src, TokenMode::Code);
+    code(&mut p);
+    p.finish()
+}
+
 /// Reparse a code block.
 ///
 /// Returns `Some` if all of the input was consumed.
@@ -696,20 +703,25 @@ fn params(p: &mut Parser, marker: Marker) {
 fn code_block(p: &mut Parser) {
     p.perform(NodeKind::CodeBlock, |p| {
         p.start_group(Group::Brace);
-        while !p.eof() {
-            p.start_group(Group::Expr);
-            if expr(p).is_ok() && !p.eof() {
-                p.expected("semicolon or line break");
-            }
-            p.end_group();
-
-            // Forcefully skip over newlines since the group's contents can't.
-            p.eat_while(|t| matches!(t, NodeKind::Space(_)));
-        }
+        code(p);
         p.end_group();
     });
 }
 
+/// Parse expressions.
+fn code(p: &mut Parser) {
+    while !p.eof() {
+        p.start_group(Group::Expr);
+        if expr(p).is_ok() && !p.eof() {
+            p.expected("semicolon or line break");
+        }
+        p.end_group();
+
+        // Forcefully skip over newlines since the group's contents can't.
+        p.eat_while(|t| matches!(t, NodeKind::Space(_)));
+    }
+}
+
 // Parse a content block: `[...]`.
 fn content_block(p: &mut Parser) {
     p.perform(NodeKind::ContentBlock, |p| {

src/syntax/highlight.rs

@@ -95,7 +95,7 @@ pub enum Category {
     /// A function.
     Function,
     /// An interpolated variable in markup.
-    Variable,
+    Interpolated,
     /// An invalid node.
     Invalid,
 }
@@ -178,7 +178,7 @@ impl Category {
             NodeKind::None => Some(Category::None),
             NodeKind::Auto => Some(Category::Auto),
             NodeKind::Ident(_) => match parent.kind() {
-                NodeKind::Markup(_) => Some(Category::Variable),
+                NodeKind::Markup(_) => Some(Category::Interpolated),
                 NodeKind::FuncCall => Some(Category::Function),
                 NodeKind::MethodCall if i > 0 => Some(Category::Function),
                 NodeKind::ClosureExpr if i == 0 => Some(Category::Function),
@@ -263,7 +263,7 @@ impl Category {
             Self::Number => "constant.numeric.typst",
             Self::String => "string.quoted.double.typst",
             Self::Function => "entity.name.function.typst",
-            Self::Variable => "variable.parameter.typst",
+            Self::Interpolated => "entity.other.interpolated.typst",
             Self::Invalid => "invalid.typst",
         }
     }

tests/typ/code/array.typ

@@ -4,6 +4,8 @@
 ---
 // Ref: true
 
+#set page(width: 150pt)
+
 // Empty.
 {()}
 

tests/typ/code/call.typ

@@ -13,7 +13,6 @@
 #f(1)[2](3)
 
 // Don't parse this as a function.
-// Should output `<function test> (it)`.
 #test (it)
 
 #let f(body) = body

tests/typ/code/repr.typ

@@ -25,23 +25,24 @@
 {2.3fr}
 
 ---
-// Colors.
-#rgb("f7a20500") \
-{2pt + rgb("f7a20500")}
+// Colors and strokes.
+#set text(0.8em)
+#rgb("f7a205") \
+{2pt + rgb("f7a205")}
 
 ---
 // Strings and escaping.
-#repr("hi") \
+#raw(repr("hi"), lang: "typc") \
 #repr("a\n[]\"\u{1F680}string")
 
 ---
 // Content.
-#repr[*{"H" + "i"} there*]
+#raw(repr[*{"H" + "i"} there*])
 
 ---
 // Functions
 #let f(x) = x
 
-{() => none} \
 {f} \
-{rect}
+{rect} \
+{() => none} \

tests/typ/text/code.typ

@@ -0,0 +1,57 @@
+// Test code highlighting.
+
+---
+#set text(6pt)
+```typ
+= Chapter 1
+#lorem(100)
+
+#let hi = "Hello World"
+```
+
+---
+#set page(width: 180pt)
+#set text(6pt)
+
+```rust
+/// A carefully designed state machine.
+#[derive(Debug)]
+enum State<'a> { A(u8), B(&'a str) }
+
+fn advance(state: State<'_>) -> State<'_> {
+    unimplemented!("state machine")
+}
+```
+
+---
+#set text(6pt)
+```py
+import this
+
+def hi():
+  print("Hi!")
+```
+
+---
+#set page(width: 180pt)
+#set text(6pt)
+
+#rect(inset: (x: 4pt, y: 5pt), radius: 4pt, fill: rgb(239, 241, 243))[
+  ```html
+  <!DOCTYPE html>
+  <html>
+    <head>
+      <meta charset="utf-8">
+    </head>
+    <body>
+      <h1>Topic</h1>
+      <p>The Hypertext Markup Language.</p>
+      <script>
+        function foo(a, b) {
+          return a + b + "string";
+        }
+      </script>
+    </body>
+  </html>
+  ```
+]

tests/typ/text/microtype.typ

@@ -5,7 +5,7 @@
 #set page(width: 130pt, margins: 15pt)
 #set par(justify: true, linebreaks: "simple")
 #set text(size: 9pt)
-#rect(fill: rgb(repr(teal) + "00"), width: 100%)[
+#rect(fill: rgb(0, 0, 0, 0), width: 100%)[
   This is a little bit of text that builds up to
   hang-ing hyphens and dash---es and then, you know,
   some punctuation in the margin.

tests/typ/text/raw.typ

@@ -37,16 +37,6 @@ The keyword ```rust let```.
 <``` trimmed ```> \
 <``` trimmed```>
 
-// Multiline trimming and dedenting.
-#block[
-  ```py
-  import this
-
-  def hi():
-    print("Hi!")
-  ```
-]
-
 ---
 // First line is not dedented and leading space is still possible.
      ```   A

tools/support/typst.tmLanguage.json

@@ -179,7 +179,7 @@
           "patterns": [{ "include": "#arguments" }]
         },
         {
-          "name": "variable.interpolated.typst",
+          "name": "entity.other.interpolated.typst",
           "match": "(#)[[:alpha:]_][[:alnum:]_-]*",
           "captures": { "1": { "name": "punctuation.definition.variable.typst" } }
         }