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Library functions behave more imperatively

Browse Source 
- Templates scope state changes
- State-modifying function operate in place instead of returning a template
- Internal template representation contains actual owned nodes instead of a pointer to a syntax tree + an expression map
- No more wide calls
This commit is contained in:
Laurenz 2021-08-17 22:04:18 +02:00
parent c53d98a22f
commit 594809e35b
46 changed files with 945 additions and 1033 deletions
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45
bench/src/clock.rs
View File

@ -5,8 +5,7 @@ use std::rc::Rc;
use criterion::{criterion_group, criterion_main, Criterion};
use typst::diag::TypResult;
use typst::eval::{eval, Module};
use typst::exec::exec;
use typst::eval::{eval, Module, State};
use typst::export::pdf;
use typst::layout::{layout, Frame, LayoutTree};
use typst::loading::FsLoader;
@ -30,7 +29,7 @@ fn benchmarks(c: &mut Criterion) {
let case = Case::new(ctx.clone(), id);
macro_rules! bench {
($step:literal, setup = |$ctx:ident| $setup:expr, code = $code:expr $(,)?) => {
($step:literal, setup: |$ctx:ident| $setup:expr, code: $code:expr $(,)?) => {
c.bench_function(&format!("{}-{}", $step, name), |b| {
b.iter_batched(
|| {
@ -49,7 +48,7 @@ fn benchmarks(c: &mut Criterion) {
bench!("parse", case.parse());
bench!("eval", case.eval());
bench!("exec", case.exec());
bench!("build", case.build());
#[cfg(not(feature = "layout-cache"))]
{
@ -59,16 +58,8 @@ fn benchmarks(c: &mut Criterion) {
#[cfg(feature = "layout-cache")]
{
bench!(
"layout",
setup = |ctx| ctx.layouts.clear(),
code = case.layout(),
);
bench!(
"typeset",
setup = |ctx| ctx.layouts.clear(),
code = case.typeset(),
);
bench!("layout", setup: |ctx| ctx.layouts.clear(), code: case.layout());
bench!("typeset", setup: |ctx| ctx.layouts.clear(), code: case.typeset());
bench!("layout-cached", case.layout());
bench!("typeset-cached", case.typeset());
}
@ -80,8 +71,9 @@ fn benchmarks(c: &mut Criterion) {
/// A test case with prepared intermediate results.
struct Case {
ctx: Rc<RefCell<Context>>,
state: State,
id: SourceId,
ast: Rc<SyntaxTree>,
ast: SyntaxTree,
module: Module,
tree: LayoutTree,
frames: Vec<Rc<Frame>>,
@ -90,13 +82,22 @@ struct Case {
impl Case {
fn new(ctx: Rc<RefCell<Context>>, id: SourceId) -> Self {
let mut borrowed = ctx.borrow_mut();
let state = State::default();
let source = borrowed.sources.get(id);
let ast = Rc::new(parse(source).unwrap());
let module = eval(&mut borrowed, id, Rc::clone(&ast)).unwrap();
let tree = exec(&mut borrowed, &module.template);
let ast = parse(source).unwrap();
let module = eval(&mut borrowed, id, &ast).unwrap();
let tree = module.template.to_tree(&state);
let frames = layout(&mut borrowed, &tree);
drop(borrowed);
Self { ctx, id, ast, module, tree, frames }
Self {
ctx,
state,
id,
ast,
module,
tree,
frames,
}
}
fn parse(&self) -> SyntaxTree {
@ -104,11 +105,11 @@ impl Case {
}
fn eval(&self) -> TypResult<Module> {
eval(&mut self.ctx.borrow_mut(), self.id, Rc::clone(&self.ast))
eval(&mut self.ctx.borrow_mut(), self.id, &self.ast)
}
fn exec(&self) -> LayoutTree {
exec(&mut self.ctx.borrow_mut(), &self.module.template)
fn build(&self) -> LayoutTree {
self.module.template.to_tree(&self.state)
}
fn layout(&self) -> Vec<Rc<Frame>> {

201
src/eval/mod.rs
View File

@ -1,4 +1,4 @@
//! Evaluation of syntax trees.
//! Evaluation of syntax trees into modules.
#[macro_use]
mod array;
@ -10,6 +10,7 @@ mod capture;
mod function;
mod ops;
mod scope;
mod state;
mod str;
mod template;
@ -19,39 +20,38 @@ pub use capture::*;
pub use dict::*;
pub use function::*;
pub use scope::*;
pub use state::*;
pub use template::*;
pub use value::*;
use std::cell::RefMut;
use std::collections::HashMap;
use std::fmt::Write;
use std::io;
use std::mem;
use std::path::PathBuf;
use std::rc::Rc;
use crate::diag::{At, Error, StrResult, Trace, Tracepoint, TypResult};
use crate::geom::{Angle, Fractional, Length, Relative};
use crate::geom::{Angle, Fractional, Gen, Length, Relative};
use crate::image::ImageStore;
use crate::layout::{ParChild, ParNode, StackChild, StackNode};
use crate::loading::Loader;
use crate::parse::parse;
use crate::source::{SourceId, SourceStore};
use crate::syntax::visit::Visit;
use crate::syntax::*;
use crate::util::RefMutExt;
use crate::util::{EcoString, RefMutExt};
use crate::Context;
/// Evaluate a parsed source file into a module.
pub fn eval(
ctx: &mut Context,
source: SourceId,
ast: Rc<SyntaxTree>,
) -> TypResult<Module> {
pub fn eval(ctx: &mut Context, source: SourceId, ast: &SyntaxTree) -> TypResult<Module> {
let mut ctx = EvalContext::new(ctx, source);
let template = ast.eval(&mut ctx)?;
Ok(Module { scope: ctx.scopes.top, template })
}
/// An evaluated module, ready for importing or execution.
/// An evaluated module, ready for importing or instantiation.
#[derive(Debug, Clone, PartialEq)]
pub struct Module {
/// The top-level definitions that were bound in this module.
@ -74,8 +74,8 @@ pub struct EvalContext<'a> {
pub modules: HashMap<SourceId, Module>,
/// The active scopes.
pub scopes: Scopes<'a>,
/// The expression map for the currently built template.
pub map: ExprMap,
/// The currently built template.
pub template: Template,
}
impl<'a> EvalContext<'a> {
@ -88,7 +88,7 @@ impl<'a> EvalContext<'a> {
route: vec![source],
modules: HashMap::new(),
scopes: Scopes::new(Some(&ctx.std)),
map: ExprMap::new(),
template: Template::new(),
}
}
@ -158,17 +158,17 @@ pub trait Eval {
fn eval(&self, ctx: &mut EvalContext) -> TypResult<Self::Output>;
}
impl Eval for Rc<SyntaxTree> {
impl Eval for SyntaxTree {
type Output = Template;
fn eval(&self, ctx: &mut EvalContext) -> TypResult<Self::Output> {
let map = {
let prev = mem::take(&mut ctx.map);
Ok({
let prev = mem::take(&mut ctx.template);
ctx.template.save();
self.walk(ctx)?;
mem::replace(&mut ctx.map, prev)
};
Ok(TemplateTree { tree: Rc::clone(self), map }.into())
ctx.template.restore();
mem::replace(&mut ctx.template, prev)
})
}
}
@ -671,43 +671,6 @@ impl Eval for IncludeExpr {
}
}
/// Walk a node in a template, filling the context's expression map.
pub trait Walk {
/// Walk the node.
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()>;
}
impl Walk for SyntaxTree {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
for node in self.iter() {
node.walk(ctx)?;
}
Ok(())
}
}
impl Walk for SyntaxNode {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
match self {
Self::Space => {}
Self::Text(_) => {}
Self::Linebreak(_) => {}
Self::Parbreak(_) => {}
Self::Strong(_) => {}
Self::Emph(_) => {}
Self::Raw(_) => {}
Self::Heading(n) => n.body.walk(ctx)?,
Self::List(n) => n.body.walk(ctx)?,
Self::Enum(n) => n.body.walk(ctx)?,
Self::Expr(n) => {
let value = n.eval(ctx)?;
ctx.map.insert(n as *const _, value);
}
}
Ok(())
}
}
/// Try to mutably access the value an expression points to.
///
/// This only works if the expression is a valid lvalue.
@ -754,3 +717,129 @@ impl Access for CallExpr {
})
}
}
/// Walk a syntax node and fill the currently built template.
pub trait Walk {
/// Walk the node.
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()>;
}
impl Walk for SyntaxTree {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
for node in self.iter() {
node.walk(ctx)?;
}
Ok(())
}
}
impl Walk for SyntaxNode {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
match self {
Self::Space => ctx.template.space(),
Self::Linebreak(_) => ctx.template.linebreak(),
Self::Parbreak(_) => ctx.template.parbreak(),
Self::Strong(_) => {
ctx.template.modify(|state| state.font_mut().strong ^= true);
}
Self::Emph(_) => {
ctx.template.modify(|state| state.font_mut().emph ^= true);
}
Self::Text(text) => ctx.template.text(text),
Self::Raw(raw) => raw.walk(ctx)?,
Self::Heading(heading) => heading.walk(ctx)?,
Self::List(list) => list.walk(ctx)?,
Self::Enum(enum_) => enum_.walk(ctx)?,
Self::Expr(expr) => match expr.eval(ctx)? {
Value::None => {}
Value::Int(v) => ctx.template.text(v.to_string()),
Value::Float(v) => ctx.template.text(v.to_string()),
Value::Str(v) => ctx.template.text(v),
Value::Template(v) => ctx.template += v,
// For values which can't be shown "naturally", we print the
// representation in monospace.
other => ctx.template.monospace(other.to_string()),
},
}
Ok(())
}
}
impl Walk for RawNode {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
if self.block {
ctx.template.parbreak();
}
ctx.template.monospace(&self.text);
if self.block {
ctx.template.parbreak();
}
Ok(())
}
}
impl Walk for HeadingNode {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
let level = self.level;
let body = self.body.eval(ctx)?;
ctx.template.parbreak();
ctx.template.save();
ctx.template.modify(move |state| {
let font = state.font_mut();
let upscale = 1.6 - 0.1 * level as f64;
font.size *= upscale;
font.strong = true;
});
ctx.template += body;
ctx.template.restore();
ctx.template.parbreak();
Ok(())
}
}
impl Walk for ListItem {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
let body = self.body.eval(ctx)?;
walk_item(ctx, '•'.into(), body);
Ok(())
}
}
impl Walk for EnumItem {
fn walk(&self, ctx: &mut EvalContext) -> TypResult<()> {
let body = self.body.eval(ctx)?;
let mut label = EcoString::new();
write!(&mut label, "{}.", self.number.unwrap_or(1)).unwrap();
walk_item(ctx, label, body);
Ok(())
}
}
/// Walk a list or enum item, converting it into a stack.
fn walk_item(ctx: &mut EvalContext, label: EcoString, body: Template) {
ctx.template += Template::from_block(move |state| {
let label = ParNode {
dir: state.dirs.cross,
line_spacing: state.line_spacing(),
children: vec![ParChild::Text(
label.clone(),
state.aligns.cross,
Rc::clone(&state.font),
)],
};
StackNode {
dirs: Gen::new(state.dirs.main, state.dirs.cross),
aspect: None,
children: vec![
StackChild::Any(label.into(), Gen::default()),
StackChild::Spacing((state.font.size / 2.0).into()),
StackChild::Any(body.to_stack(&state).into(), Gen::default()),
],
}
});
}

33
src/exec/state.rs → src/eval/state.rs
View File

@ -8,18 +8,18 @@ use crate::geom::*;
use crate::layout::Paint;
use crate::paper::{PaperClass, PAPER_A4};
/// The execution state.
/// Defines an set of properties a template can be instantiated with.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct State {
/// The direction for text and other inline objects.
pub dirs: Gen<Dir>,
/// The current alignments of layouts in their parents.
/// The alignments of layouts in their parents.
pub aligns: Gen<Align>,
/// The current page settings.
/// The page settings.
pub page: Rc<PageState>,
/// The current paragraph settings.
/// The paragraph settings.
pub par: Rc<ParState>,
/// The current font settings.
/// The font settings.
pub font: Rc<FontState>,
}
@ -98,7 +98,7 @@ impl Default for PageState {
}
}
/// Style paragraph properties.
/// Defines paragraph properties.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct ParState {
/// The spacing between paragraphs (dependent on scaled font size).
@ -119,13 +119,12 @@ impl Default for ParState {
/// Defines font properties.
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
pub struct FontState {
/// Whether the strong toggle is active or inactive. This determines
/// whether the next `*` adds or removes font weight.
/// Whether 300 extra font weight should be added to what is defined by the
/// `variant`.
pub strong: bool,
/// Whether the emphasis toggle is active or inactive. This determines
/// whether the next `_` makes italic or non-italic.
/// Whether the the font style defined by the `variant` should be inverted.
pub emph: bool,
/// Whether the monospace toggle is active or inactive.
/// Whether a monospace font should be preferred.
pub monospace: bool,
/// The font size.
pub size: Length,
@ -176,11 +175,13 @@ impl FontState {
.then(|| self.families.monospace.as_slice())
.unwrap_or_default();
let core = self.families.list.iter().flat_map(move |family| match family {
FontFamily::Named(name) => std::slice::from_ref(name),
FontFamily::Serif => &self.families.serif,
FontFamily::SansSerif => &self.families.sans_serif,
FontFamily::Monospace => &self.families.monospace,
let core = self.families.list.iter().flat_map(move |family| {
match family {
FontFamily::Named(name) => std::slice::from_ref(name),
FontFamily::Serif => &self.families.serif,
FontFamily::SansSerif => &self.families.sans_serif,
FontFamily::Monospace => &self.families.monospace,
}
});
head.iter()

490
src/eval/template.rs
View File

@ -1,28 +1,145 @@
use std::collections::HashMap;
use std::convert::TryFrom;
use std::fmt::{self, Debug, Display, Formatter};
use std::ops::{Add, AddAssign, Deref};
use std::mem;
use std::ops::{Add, AddAssign};
use std::rc::Rc;
use super::{Str, Value};
use super::{State, Str};
use crate::diag::StrResult;
use crate::exec::ExecContext;
use crate::syntax::{Expr, SyntaxTree};
use crate::geom::{Align, Dir, Gen, GenAxis, Length, Linear, Sides, Size};
use crate::layout::{
LayoutNode, LayoutTree, PadNode, PageRun, ParChild, ParNode, StackChild, StackNode,
};
use crate::util::EcoString;
/// A template value: `[*Hi* there]`.
#[derive(Debug, Default, Clone)]
#[derive(Default, Clone)]
pub struct Template(Rc<Vec<TemplateNode>>);
/// One node in a template.
#[derive(Clone)]
enum TemplateNode {
/// A word space.
Space,
/// A line break.
Linebreak,
/// A paragraph break.
Parbreak,
/// A page break.
Pagebreak(bool),
/// Plain text.
Text(EcoString),
/// Spacing.
Spacing(GenAxis, Linear),
/// An inline node builder.
Inline(Rc<dyn Fn(&State) -> LayoutNode>),
/// An block node builder.
Block(Rc<dyn Fn(&State) -> LayoutNode>),
/// Save the current state.
Save,
/// Restore the last saved state.
Restore,
/// A function that can modify the current state.
Modify(Rc<dyn Fn(&mut State)>),
}
impl Template {
/// Create a new template from a vector of nodes.
pub fn new(nodes: Vec<TemplateNode>) -> Self {
Self(Rc::new(nodes))
/// Create a new, empty template.
pub fn new() -> Self {
Self(Rc::new(vec![]))
}
/// Iterate over the contained template nodes.
pub fn iter(&self) -> std::slice::Iter<TemplateNode> {
self.0.iter()
/// Create a template from a builder for an inline-level node.
pub fn from_inline<F, T>(f: F) -> Self
where
F: Fn(&State) -> T + 'static,
T: Into<LayoutNode>,
{
let node = TemplateNode::Inline(Rc::new(move |s| f(s).into()));
Self(Rc::new(vec![node]))
}
/// Create a template from a builder for a block-level node.
pub fn from_block<F, T>(f: F) -> Self
where
F: Fn(&State) -> T + 'static,
T: Into<LayoutNode>,
{
let node = TemplateNode::Block(Rc::new(move |s| f(s).into()));
Self(Rc::new(vec![node]))
}
/// Add a word space to the template.
pub fn space(&mut self) {
self.make_mut().push(TemplateNode::Space);
}
/// Add a line break to the template.
pub fn linebreak(&mut self) {
self.make_mut().push(TemplateNode::Linebreak);
}
/// Add a paragraph break to the template.
pub fn parbreak(&mut self) {
self.make_mut().push(TemplateNode::Parbreak);
}
/// Add a page break to the template.
pub fn pagebreak(&mut self, keep: bool) {
self.make_mut().push(TemplateNode::Pagebreak(keep));
}
/// Add text to the template.
pub fn text(&mut self, text: impl Into<EcoString>) {
self.make_mut().push(TemplateNode::Text(text.into()));
}
/// Add text, but in monospace.
pub fn monospace(&mut self, text: impl Into<EcoString>) {
self.save();
self.modify(|state| state.font_mut().monospace = true);
self.text(text);
self.restore();
}
/// Add spacing along an axis.
pub fn spacing(&mut self, axis: GenAxis, spacing: Linear) {
self.make_mut().push(TemplateNode::Spacing(axis, spacing));
}
/// Register a restorable snapshot.
pub fn save(&mut self) {
self.make_mut().push(TemplateNode::Save);
}
/// Ensure that later nodes are untouched by state modifications made since
/// the last snapshot.
pub fn restore(&mut self) {
self.make_mut().push(TemplateNode::Restore);
}
/// Modify the state.
pub fn modify<F>(&mut self, f: F)
where
F: Fn(&mut State) + 'static,
{
self.make_mut().push(TemplateNode::Modify(Rc::new(f)));
}
/// Build the stack node resulting from instantiating the template in the
/// given state.
pub fn to_stack(&self, state: &State) -> StackNode {
let mut builder = Builder::new(state, false);
builder.template(self);
builder.build_stack()
}
/// Build the layout tree resulting from instantiating the template in the
/// given state.
pub fn to_tree(&self, state: &State) -> LayoutTree {
let mut builder = Builder::new(state, true);
builder.template(self);
builder.build_tree()
}
/// Repeat this template `n` times.
@ -33,9 +150,14 @@ impl Template {
.ok_or_else(|| format!("cannot repeat this template {} times", n))?;
Ok(Self(Rc::new(
self.iter().cloned().cycle().take(count).collect(),
self.0.iter().cloned().cycle().take(count).collect(),
)))
}
/// Return a mutable reference to the inner vector.
fn make_mut(&mut self) -> &mut Vec<TemplateNode> {
Rc::make_mut(&mut self.0)
}
}
impl Display for Template {
@ -44,6 +166,12 @@ impl Display for Template {
}
}
impl Debug for Template {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
f.pad("Template { .. }")
}
}
impl PartialEq for Template {
fn eq(&self, other: &Self) -> bool {
Rc::ptr_eq(&self.0, &other.0)
@ -73,7 +201,7 @@ impl Add<Str> for Template {
type Output = Self;
fn add(mut self, rhs: Str) -> Self::Output {
Rc::make_mut(&mut self.0).push(TemplateNode::Str(rhs.into()));
Rc::make_mut(&mut self.0).push(TemplateNode::Text(rhs.into()));
self
}
}
@ -82,86 +210,306 @@ impl Add<Template> for Str {
type Output = Template;
fn add(self, mut rhs: Template) -> Self::Output {
Rc::make_mut(&mut rhs.0).insert(0, TemplateNode::Str(self.into()));
Rc::make_mut(&mut rhs.0).insert(0, TemplateNode::Text(self.into()));
rhs
}
}
impl From<TemplateTree> for Template {
fn from(tree: TemplateTree) -> Self {
Self::new(vec![TemplateNode::Tree(tree)])
/// Transforms from template to layout representation.
struct Builder {
/// The active state.
state: State,
/// Snapshots of the state.
snapshots: Vec<State>,
/// The tree of finished page runs.
tree: LayoutTree,
/// When we are building the top-level layout trees, this contains metrics
/// of the page. While building a stack, this is `None`.
page: Option<PageBuilder>,
/// The currently built stack of paragraphs.
stack: StackBuilder,
}
impl Builder {
/// Create a new builder with a base state.
fn new(state: &State, pages: bool) -> Self {
Self {
state: state.clone(),
snapshots: vec![],
tree: LayoutTree { runs: vec![] },
page: pages.then(|| PageBuilder::new(state, true)),
stack: StackBuilder::new(state),
}
}
/// Build a template.
fn template(&mut self, template: &Template) {
for node in template.0.iter() {
self.node(node);
}
}
/// Build a template node.
fn node(&mut self, node: &TemplateNode) {
match node {
TemplateNode::Save => self.snapshots.push(self.state.clone()),
TemplateNode::Restore => {
let state = self.snapshots.pop().unwrap();
let newpage = state.page != self.state.page;
self.state = state;
if newpage {
self.pagebreak(true, false);
}
}
TemplateNode::Space => self.space(),
TemplateNode::Linebreak => self.linebreak(),
TemplateNode::Parbreak => self.parbreak(),
TemplateNode::Pagebreak(keep) => self.pagebreak(*keep, true),
TemplateNode::Text(text) => self.text(text),
TemplateNode::Spacing(axis, amount) => self.spacing(*axis, *amount),
TemplateNode::Inline(f) => self.inline(f(&self.state)),
TemplateNode::Block(f) => self.block(f(&self.state)),
TemplateNode::Modify(f) => f(&mut self.state),
}
}
/// Push a word space into the active paragraph.
fn space(&mut self) {
self.stack.par.push_soft(self.make_text_node(' '));
}
/// Apply a forced line break.
fn linebreak(&mut self) {
self.stack.par.push_hard(self.make_text_node('\n'));
}
/// Apply a forced paragraph break.
fn parbreak(&mut self) {
let amount = self.state.par_spacing();
self.stack.finish_par(&self.state);
self.stack.push_soft(StackChild::Spacing(amount.into()));
}
/// Apply a forced page break.
fn pagebreak(&mut self, keep: bool, hard: bool) {
if let Some(builder) = &mut self.page {
let page = mem::replace(builder, PageBuilder::new(&self.state, hard));
let stack = mem::replace(&mut self.stack, StackBuilder::new(&self.state));
self.tree.runs.extend(page.build(stack.build(), keep));
}
}
/// Push text into the active paragraph.
///
/// The text is split into lines at newlines.
fn text(&mut self, text: impl Into<EcoString>) {
self.stack.par.push(self.make_text_node(text));
}
/// Push an inline node into the active paragraph.
fn inline(&mut self, node: impl Into<LayoutNode>) {
let align = self.state.aligns.cross;
self.stack.par.push(ParChild::Any(node.into(), align));
}
/// Push a block node into the active stack, finishing the active paragraph.
fn block(&mut self, node: impl Into<LayoutNode>) {
self.parbreak();
let aligns = self.state.aligns;
self.stack.push(StackChild::Any(node.into(), aligns));
self.parbreak();
}
/// Push spacing into the active paragraph or stack depending on the `axis`.
fn spacing(&mut self, axis: GenAxis, amount: Linear) {
match axis {
GenAxis::Main => {
self.stack.finish_par(&self.state);
self.stack.push_hard(StackChild::Spacing(amount));
}
GenAxis::Cross => {
self.stack.par.push_hard(ParChild::Spacing(amount));
}
}
}
/// Finish building and return the created stack.
fn build_stack(self) -> StackNode {
assert!(self.page.is_none());
self.stack.build()
}
/// Finish building and return the created layout tree.
fn build_tree(mut self) -> LayoutTree {
assert!(self.page.is_some());
self.pagebreak(true, false);
self.tree
}
/// Construct a text node with the given text and settings from the active
/// state.
fn make_text_node(&self, text: impl Into<EcoString>) -> ParChild {
ParChild::Text(
text.into(),
self.state.aligns.cross,
Rc::clone(&self.state.font),
)
}
}
impl From<TemplateFunc> for Template {
fn from(func: TemplateFunc) -> Self {
Self::new(vec![TemplateNode::Func(func)])
struct PageBuilder {
size: Size,
padding: Sides<Linear>,
hard: bool,
}
impl PageBuilder {
fn new(state: &State, hard: bool) -> Self {
Self {
size: state.page.size,
padding: state.page.margins(),
hard,
}
}
fn build(self, child: StackNode, keep: bool) -> Option<PageRun> {
let Self { size, padding, hard } = self;
(!child.children.is_empty() || (keep && hard)).then(|| PageRun {
size,
child: PadNode { padding, child: child.into() }.into(),
})
}
}
impl From<Str> for Template {
fn from(string: Str) -> Self {
Self::new(vec![TemplateNode::Str(string.into())])
struct StackBuilder {
dirs: Gen<Dir>,
children: Vec<StackChild>,
last: Last<StackChild>,
par: ParBuilder,
}
impl StackBuilder {
fn new(state: &State) -> Self {
Self {
dirs: state.dirs,
children: vec![],
last: Last::None,
par: ParBuilder::new(state),
}
}
fn push(&mut self, child: StackChild) {
self.children.extend(self.last.any());
self.children.push(child);
}
fn push_soft(&mut self, child: StackChild) {
self.last.soft(child);
}
fn push_hard(&mut self, child: StackChild) {
self.last.hard();
self.children.push(child);
}
fn finish_par(&mut self, state: &State) {
let par = mem::replace(&mut self.par, ParBuilder::new(state));
if let Some(par) = par.build() {
self.push(par);
}
}
fn build(self) -> StackNode {
let Self { dirs, mut children, par, mut last } = self;
if let Some(par) = par.build() {
children.extend(last.any());
children.push(par);
}
StackNode { dirs, aspect: None, children }
}
}
/// One node of a template.
///
/// Evaluating a template expression creates only a single node. Adding multiple
/// templates can yield multi-node templates.
#[derive(Debug, Clone)]
pub enum TemplateNode {
/// A template that was evaluated from a template expression.
Tree(TemplateTree),
/// A function template that can implement custom behaviour.
Func(TemplateFunc),
/// A template that was converted from a string.
Str(EcoString),
struct ParBuilder {
aligns: Gen<Align>,
dir: Dir,
line_spacing: Length,
children: Vec<ParChild>,
last: Last<ParChild>,
}
/// A template that consists of a syntax tree plus already evaluated
/// expressions.
#[derive(Debug, Clone)]
pub struct TemplateTree {
/// The syntax tree of the corresponding template expression.
pub tree: Rc<SyntaxTree>,
/// The evaluated expressions in the syntax tree.
pub map: ExprMap,
}
impl ParBuilder {
fn new(state: &State) -> Self {
Self {
aligns: state.aligns,
dir: state.dirs.cross,
line_spacing: state.line_spacing(),
children: vec![],
last: Last::None,
}
}
/// A map from expressions to the values they evaluated to.
///
/// The raw pointers point into the expressions contained in some
/// [`SyntaxTree`]. Since the lifetime is erased, the tree could go out of scope
/// while the hash map still lives. Although this could lead to lookup panics,
/// it is safe since the pointers are never dereferenced.
pub type ExprMap = HashMap<*const Expr, Value>;
fn push(&mut self, child: ParChild) {
if let Some(soft) = self.last.any() {
self.push_inner(soft);
}
self.push_inner(child);
}
/// A reference-counted dynamic template node that can implement custom
/// behaviour.
#[derive(Clone)]
pub struct TemplateFunc(Rc<dyn Fn(&mut ExecContext)>);
fn push_soft(&mut self, child: ParChild) {
self.last.soft(child);
}
impl TemplateFunc {
/// Create a new function template from a rust function or closure.
pub fn new<F>(f: F) -> Self
where
F: Fn(&mut ExecContext) + 'static,
{
Self(Rc::new(f))
fn push_hard(&mut self, child: ParChild) {
self.last.hard();
self.push_inner(child);
}
fn push_inner(&mut self, child: ParChild) {
if let ParChild::Text(curr_text, curr_props, curr_align) = &child {
if let Some(ParChild::Text(prev_text, prev_props, prev_align)) =
self.children.last_mut()
{
if prev_align == curr_align && prev_props == curr_props {
prev_text.push_str(&curr_text);
return;
}
}
}
self.children.push(child);
}
fn build(self) -> Option<StackChild> {
let Self { aligns, dir, line_spacing, children, .. } = self;
(!children.is_empty()).then(|| {
let node = ParNode { dir, line_spacing, children };
StackChild::Any(node.into(), aligns)
})
}
}
impl Debug for TemplateFunc {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
f.debug_struct("TemplateFunc").finish()
}
/// Finite state machine for spacing coalescing.
enum Last<N> {
None,
Any,
Soft(N),
}
impl Deref for TemplateFunc {
type Target = dyn Fn(&mut ExecContext);
impl<N> Last<N> {
fn any(&mut self) -> Option<N> {
match mem::replace(self, Self::Any) {
Self::Soft(soft) => Some(soft),
_ => None,
}
}
fn deref(&self) -> &Self::Target {
self.0.as_ref()
fn soft(&mut self, soft: N) {
if let Self::Any = self {
*self = Self::Soft(soft);
}
}
fn hard(&mut self) {
*self = Self::None;
}
}

11
src/eval/value.rs
View File

@ -3,10 +3,9 @@ use std::cmp::Ordering;
use std::fmt::{self, Debug, Display, Formatter};
use std::rc::Rc;
use super::{ops, Array, Dict, Function, Str, Template, TemplateFunc};
use super::{ops, Array, Dict, Function, Str, Template};
use crate::color::{Color, RgbaColor};
use crate::diag::StrResult;
use crate::exec::ExecContext;
use crate::geom::{Angle, Fractional, Length, Linear, Relative};
use crate::syntax::Spanned;
use crate::util::EcoString;
@ -51,14 +50,6 @@ pub enum Value {
}
impl Value {
/// Create a new template consisting of a single function node.
pub fn template<F>(f: F) -> Self
where
F: Fn(&mut ExecContext) + 'static,
{
Self::Template(TemplateFunc::new(f).into())
}
/// The name of the stored value's type.
pub fn type_name(&self) -> &'static str {
match self {

302
src/exec/context.rs
View File

@ -1,302 +0,0 @@
use std::mem;
use std::rc::Rc;
use super::{Exec, ExecWithMap, State};
use crate::eval::{ExprMap, Template};
use crate::geom::{Align, Dir, Gen, GenAxis, Length, Linear, Sides, Size};
use crate::layout::{
LayoutNode, LayoutTree, PadNode, PageRun, ParChild, ParNode, StackChild, StackNode,
};
use crate::syntax::SyntaxTree;
use crate::util::EcoString;
use crate::Context;
/// The context for execution.
pub struct ExecContext {
/// The active execution state.
pub state: State,
/// The tree of finished page runs.
tree: LayoutTree,
/// When we are building the top-level stack, this contains metrics of the
/// page. While building a group stack through `exec_group`, this is `None`.
page: Option<PageBuilder>,
/// The currently built stack of paragraphs.
stack: StackBuilder,
}
impl ExecContext {
/// Create a new execution context with a base state.
pub fn new(ctx: &mut Context) -> Self {
Self {
state: ctx.state.clone(),
tree: LayoutTree { runs: vec![] },
page: Some(PageBuilder::new(&ctx.state, true)),
stack: StackBuilder::new(&ctx.state),
}
}
/// Push a word space into the active paragraph.
pub fn space(&mut self) {
self.stack.par.push_soft(self.make_text_node(' '));
}
/// Apply a forced line break.
pub fn linebreak(&mut self) {
self.stack.par.push_hard(self.make_text_node('\n'));
}
/// Apply a forced paragraph break.
pub fn parbreak(&mut self) {
let amount = self.state.par_spacing();
self.stack.finish_par(&self.state);
self.stack.push_soft(StackChild::Spacing(amount.into()));
}
/// Apply a forced page break.
pub fn pagebreak(&mut self, keep: bool, hard: bool) {
if let Some(builder) = &mut self.page {
let page = mem::replace(builder, PageBuilder::new(&self.state, hard));
let stack = mem::replace(&mut self.stack, StackBuilder::new(&self.state));
self.tree.runs.extend(page.build(stack.build(), keep));
}
}
/// Push text into the active paragraph.
///
/// The text is split into lines at newlines.
pub fn text(&mut self, text: impl Into<EcoString>) {
self.stack.par.push(self.make_text_node(text));
}
/// Push text, but in monospace.
pub fn text_mono(&mut self, text: impl Into<EcoString>) {
let prev = Rc::clone(&self.state.font);
self.state.font_mut().monospace = true;
self.text(text);
self.state.font = prev;
}
/// Push an inline node into the active paragraph.
pub fn inline(&mut self, node: impl Into<LayoutNode>) {
let align = self.state.aligns.cross;
self.stack.par.push(ParChild::Any(node.into(), align));
}
/// Push a block node into the active stack, finishing the active paragraph.
pub fn block(&mut self, node: impl Into<LayoutNode>) {
self.parbreak();
let aligns = self.state.aligns;
self.stack.push(StackChild::Any(node.into(), aligns));
self.parbreak();
}
/// Push spacing into the active paragraph or stack depending on the `axis`.
pub fn spacing(&mut self, axis: GenAxis, amount: Linear) {
match axis {
GenAxis::Main => {
self.stack.finish_par(&self.state);
self.stack.push_hard(StackChild::Spacing(amount));
}
GenAxis::Cross => {
self.stack.par.push_hard(ParChild::Spacing(amount));
}
}
}
/// Execute a template and return the result as a stack node.
pub fn exec_template(&mut self, template: &Template) -> StackNode {
self.exec_to_stack(|ctx| template.exec(ctx))
}
/// Execute a syntax tree with a map and return the result as a stack node.
pub fn exec_tree(&mut self, tree: &SyntaxTree, map: &ExprMap) -> StackNode {
self.exec_to_stack(|ctx| tree.exec_with_map(ctx, map))
}
/// Execute something and return the result as a stack node.
pub fn exec_to_stack(&mut self, f: impl FnOnce(&mut Self)) -> StackNode {
let snapshot = self.state.clone();
let page = self.page.take();
let stack = mem::replace(&mut self.stack, StackBuilder::new(&self.state));
f(self);
self.state = snapshot;
self.page = page;
mem::replace(&mut self.stack, stack).build()
}
/// Finish execution and return the created layout tree.
pub fn finish(mut self) -> LayoutTree {
assert!(self.page.is_some());
self.pagebreak(true, false);
self.tree
}
/// Construct a text node with the given text and settings from the active
/// state.
fn make_text_node(&self, text: impl Into<EcoString>) -> ParChild {
ParChild::Text(
text.into(),
self.state.aligns.cross,
Rc::clone(&self.state.font),
)
}
}
struct PageBuilder {
size: Size,
padding: Sides<Linear>,
hard: bool,
}
impl PageBuilder {
fn new(state: &State, hard: bool) -> Self {
Self {
size: state.page.size,
padding: state.page.margins(),
hard,
}
}
fn build(self, child: StackNode, keep: bool) -> Option<PageRun> {
let Self { size, padding, hard } = self;
(!child.children.is_empty() || (keep && hard)).then(|| PageRun {
size,
child: PadNode { padding, child: child.into() }.into(),
})
}
}
struct StackBuilder {
dirs: Gen<Dir>,
children: Vec<StackChild>,
last: Last<StackChild>,
par: ParBuilder,
}
impl StackBuilder {
fn new(state: &State) -> Self {
Self {
dirs: state.dirs,
children: vec![],
last: Last::None,
par: ParBuilder::new(state),
}
}
fn push(&mut self, child: StackChild) {
self.children.extend(self.last.any());
self.children.push(child);
}
fn push_soft(&mut self, child: StackChild) {
self.last.soft(child);
}
fn push_hard(&mut self, child: StackChild) {
self.last.hard();
self.children.push(child);
}
fn finish_par(&mut self, state: &State) {
let par = mem::replace(&mut self.par, ParBuilder::new(state));
if let Some(par) = par.build() {
self.push(par);
}
}
fn build(self) -> StackNode {
let Self { dirs, mut children, par, mut last } = self;
if let Some(par) = par.build() {
children.extend(last.any());
children.push(par);
}
StackNode { dirs, aspect: None, children }
}
}
struct ParBuilder {
aligns: Gen<Align>,
dir: Dir,
line_spacing: Length,
children: Vec<ParChild>,
last: Last<ParChild>,
}
impl ParBuilder {
fn new(state: &State) -> Self {
Self {
aligns: state.aligns,
dir: state.dirs.cross,
line_spacing: state.line_spacing(),
children: vec![],
last: Last::None,
}
}
fn push(&mut self, child: ParChild) {
if let Some(soft) = self.last.any() {
self.push_inner(soft);
}
self.push_inner(child);
}
fn push_soft(&mut self, child: ParChild) {
self.last.soft(child);
}
fn push_hard(&mut self, child: ParChild) {
self.last.hard();
self.push_inner(child);
}
fn push_inner(&mut self, child: ParChild) {
if let ParChild::Text(curr_text, curr_props, curr_align) = &child {
if let Some(ParChild::Text(prev_text, prev_props, prev_align)) =
self.children.last_mut()
{
if prev_align == curr_align && prev_props == curr_props {
prev_text.push_str(&curr_text);
return;
}
}
}
self.children.push(child);
}
fn build(self) -> Option<StackChild> {
let Self { aligns, dir, line_spacing, children, .. } = self;
(!children.is_empty()).then(|| {
let node = ParNode { dir, line_spacing, children };
StackChild::Any(node.into(), aligns)
})
}
}
/// Finite state machine for spacing coalescing.
enum Last<N> {
None,
Any,
Soft(N),
}
impl<N> Last<N> {
fn any(&mut self) -> Option<N> {
match mem::replace(self, Self::Any) {
Self::Soft(soft) => Some(soft),
_ => None,
}
}
fn soft(&mut self, soft: N) {
if let Self::Any = self {
*self = Self::Soft(soft);
}
}
fn hard(&mut self) {
*self = Self::None;
}
}

173
src/exec/mod.rs
View File

@ -1,173 +0,0 @@
//! Execution of syntax trees.
mod context;
mod state;
pub use context::*;
pub use state::*;
use std::fmt::Write;
use crate::eval::{ExprMap, Template, TemplateFunc, TemplateNode, TemplateTree, Value};
use crate::geom::Gen;
use crate::layout::{LayoutTree, StackChild, StackNode};
use crate::syntax::*;
use crate::util::EcoString;
use crate::Context;
/// Execute a template to produce a layout tree.
pub fn exec(ctx: &mut Context, template: &Template) -> LayoutTree {
let mut ctx = ExecContext::new(ctx);
template.exec(&mut ctx);
ctx.finish()
}
/// Execute a node.
///
/// This manipulates active styling and document state and produces layout
/// nodes. Because syntax nodes and layout nodes do not correspond one-to-one,
/// constructed layout nodes are pushed into the context instead of returned.
/// The context takes care of reshaping the nodes into the correct tree
/// structure.
pub trait Exec {
/// Execute the node.
fn exec(&self, ctx: &mut ExecContext);
}
/// Execute a node with an expression map that applies to it.
pub trait ExecWithMap {
/// Execute the node.
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap);
}
impl ExecWithMap for SyntaxTree {
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap) {
for node in self {
node.exec_with_map(ctx, map);
}
}
}
impl ExecWithMap for SyntaxNode {
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap) {
match self {
Self::Space => ctx.space(),
Self::Text(text) => ctx.text(text),
Self::Linebreak(_) => ctx.linebreak(),
Self::Parbreak(_) => ctx.parbreak(),
Self::Strong(_) => ctx.state.font_mut().strong ^= true,
Self::Emph(_) => ctx.state.font_mut().emph ^= true,
Self::Raw(n) => n.exec(ctx),
Self::Heading(n) => n.exec_with_map(ctx, map),
Self::List(n) => n.exec_with_map(ctx, map),
Self::Enum(n) => n.exec_with_map(ctx, map),
Self::Expr(n) => map[&(n as *const _)].exec(ctx),
}
}
}
impl Exec for RawNode {
fn exec(&self, ctx: &mut ExecContext) {
if self.block {
ctx.parbreak();
}
ctx.text_mono(&self.text);
if self.block {
ctx.parbreak();
}
}
}
impl ExecWithMap for HeadingNode {
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap) {
ctx.parbreak();
let snapshot = ctx.state.clone();
let font = ctx.state.font_mut();
let upscale = 1.6 - 0.1 * self.level as f64;
font.size *= upscale;
font.strong = true;
self.body.exec_with_map(ctx, map);
ctx.state = snapshot;
ctx.parbreak();
}
}
impl ExecWithMap for ListItem {
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap) {
exec_item(ctx, '•'.into(), &self.body, map);
}
}
impl ExecWithMap for EnumItem {
fn exec_with_map(&self, ctx: &mut ExecContext, map: &ExprMap) {
let mut label = EcoString::new();
write!(&mut label, "{}.", self.number.unwrap_or(1)).unwrap();
exec_item(ctx, label, &self.body, map);
}
}
fn exec_item(ctx: &mut ExecContext, label: EcoString, body: &SyntaxTree, map: &ExprMap) {
let label = ctx.exec_to_stack(|ctx| ctx.text(label));
let body = ctx.exec_tree(body, map);
ctx.block(StackNode {
dirs: Gen::new(ctx.state.dirs.main, ctx.state.dirs.cross),
aspect: None,
children: vec![
StackChild::Any(label.into(), Gen::default()),
StackChild::Spacing((ctx.state.font.size / 2.0).into()),
StackChild::Any(body.into(), Gen::default()),
],
});
}
impl Exec for Value {
fn exec(&self, ctx: &mut ExecContext) {
match self {
Value::None => {}
Value::Int(v) => ctx.text(v.to_string()),
Value::Float(v) => ctx.text(v.to_string()),
Value::Str(v) => ctx.text(v),
Value::Template(v) => v.exec(ctx),
// For values which can't be shown "naturally", we print the
// representation in monospace.
other => ctx.text_mono(other.to_string()),
}
}
}
impl Exec for Template {
fn exec(&self, ctx: &mut ExecContext) {
for node in self.iter() {
node.exec(ctx);
}
}
}
impl Exec for TemplateNode {
fn exec(&self, ctx: &mut ExecContext) {
match self {
Self::Tree(v) => v.exec(ctx),
Self::Func(v) => v.exec(ctx),
Self::Str(v) => ctx.text(v),
}
}
}
impl Exec for TemplateTree {
fn exec(&self, ctx: &mut ExecContext) {
self.tree.exec_with_map(ctx, &self.map)
}
}
impl Exec for TemplateFunc {
fn exec(&self, ctx: &mut ExecContext) {
let snapshot = ctx.state.clone();
self(ctx);
ctx.state = snapshot;
}
}

2
src/layout/par.rs
View File

@ -5,7 +5,7 @@ use unicode_bidi::{BidiInfo, Level};
use xi_unicode::LineBreakIterator;
use super::*;
use crate::exec::FontState;
use crate::eval::FontState;
use crate::util::{EcoString, RangeExt, SliceExt};
type Range = std::ops::Range<usize>;

2
src/layout/shaping.rs
View File

@ -5,7 +5,7 @@ use std::ops::Range;
use rustybuzz::UnicodeBuffer;
use super::{Element, Frame, Glyph, LayoutContext, Text};
use crate::exec::{FontState, LineState};
use crate::eval::{FontState, LineState};
use crate::font::{Face, FaceId, FontVariant, LineMetrics};
use crate::geom::{Dir, Length, Point, Size};
use crate::layout::Geometry;

33
src/lib.rs
View File

@ -6,12 +6,12 @@
//! tree]. The structures describing the tree can be found in the [syntax]
//! module.
//! - **Evaluation:** The next step is to [evaluate] the syntax tree. This
//! computes the value of each node in the document and produces a [module].
//! - **Execution:** Now, we can [execute] the parsed and evaluated module. This
//! results in a [layout tree], a high-level, fully styled representation of
//! the document. The nodes of this tree are self-contained and
//! order-independent and thus much better suited for layouting than the
//! syntax tree.
//! produces a [module], consisting of a scope of values that were exported by
//! the module and a template with the contents of the module. This template
//! can be [instantiated] in a state to produce a layout tree, a high-level,
//! fully styled representation of the document. The nodes of this tree are
//! self-contained and order-independent and thus much better suited for
//! layouting than a syntax tree.
//! - **Layouting:** Next, the tree is [layouted] into a portable version of the
//! typeset document. The output of this is a collection of [`Frame`]s (one
//! per page), ready for exporting.
@ -23,7 +23,7 @@
//! [syntax tree]: syntax::SyntaxTree
//! [evaluate]: eval::eval
//! [module]: eval::Module
//! [execute]: exec::exec
//! [instantiated]: eval::Template::to_tree
//! [layout tree]: layout::LayoutTree
//! [layouted]: layout::layout
//! [PDF]: export::pdf
@ -33,7 +33,6 @@ pub mod diag;
#[macro_use]
pub mod eval;
pub mod color;
pub mod exec;
pub mod export;
pub mod font;
pub mod geom;
@ -50,13 +49,12 @@ pub mod util;
use std::rc::Rc;
use crate::diag::TypResult;
use crate::eval::Scope;
use crate::exec::State;
use crate::eval::{Scope, State};
use crate::font::FontStore;
use crate::image::ImageStore;
use crate::layout::Frame;
#[cfg(feature = "layout-cache")]
use crate::layout::LayoutCache;
use crate::layout::{Frame, LayoutTree};
use crate::loading::Loader;
use crate::source::{SourceId, SourceStore};
@ -90,16 +88,21 @@ impl Context {
ContextBuilder::default()
}
/// Execute a source file and produce the resulting layout tree.
pub fn execute(&mut self, id: SourceId) -> TypResult<LayoutTree> {
let source = self.sources.get(id);
let ast = parse::parse(source)?;
let module = eval::eval(self, id, &ast)?;
Ok(module.template.to_tree(&self.state))
}
/// Typeset a source file into a collection of layouted frames.
///
/// Returns either a vector of frames representing individual pages or
/// diagnostics in the form of a vector of error message with file and span
/// information.
pub fn typeset(&mut self, id: SourceId) -> TypResult<Vec<Rc<Frame>>> {
let source = self.sources.get(id);
let ast = parse::parse(source)?;
let module = eval::eval(self, id, Rc::new(ast))?;
let tree = exec::exec(self, &module.template);
let tree = self.execute(id)?;
let frames = layout::layout(self, &tree);
Ok(frames)
}

49
src/library/elements.rs
View File

@ -23,9 +23,11 @@ pub fn image(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
})
})?;
Ok(Value::template(move |ctx| {
ctx.inline(ImageNode { id, width, height })
}))
Ok(Value::Template(Template::from_inline(move |_| ImageNode {
id,
width,
height,
})))
}
/// `rect`: A rectangle with optional content.
@ -61,22 +63,23 @@ fn rect_impl(
fill: Option<Color>,
body: Template,
) -> Value {
Value::template(move |ctx| {
let mut stack = ctx.exec_template(&body);
Value::Template(Template::from_inline(move |state| {
let mut stack = body.to_stack(state);
stack.aspect = aspect;
let fixed = FixedNode { width, height, child: stack.into() };
let mut node = FixedNode { width, height, child: stack.into() }.into();
if let Some(fill) = fill {
ctx.inline(BackgroundNode {
node = BackgroundNode {
shape: BackgroundShape::Rect,
fill: Paint::Color(fill),
child: fixed.into(),
});
} else {
ctx.inline(fixed);
child: node,
}
.into();
}
})
node
}))
}
/// `ellipse`: An ellipse with optional content.
@ -112,15 +115,15 @@ fn ellipse_impl(
fill: Option<Color>,
body: Template,
) -> Value {
Value::template(move |ctx| {
Value::Template(Template::from_inline(move |state| {
// This padding ratio ensures that the rectangular padded region fits
// perfectly into the ellipse.
const PAD: f64 = 0.5 - SQRT_2 / 4.0;
let mut stack = ctx.exec_template(&body);
let mut stack = body.to_stack(state);
stack.aspect = aspect;
let fixed = FixedNode {
let mut node = FixedNode {
width,
height,
child: PadNode {
@ -128,16 +131,18 @@ fn ellipse_impl(
child: stack.into(),
}
.into(),
};
}
.into();
if let Some(fill) = fill {
ctx.inline(BackgroundNode {
node = BackgroundNode {
shape: BackgroundShape::Ellipse,
fill: Paint::Color(fill),
child: fixed.into(),
});
} else {
ctx.inline(fixed);
child: node,
}
.into();
}
})
node
}))
}

171
src/library/layout.rs
View File

@ -3,7 +3,7 @@ use crate::layout::{FixedNode, GridNode, PadNode, StackChild, StackNode, TrackSi
use crate::paper::{Paper, PaperClass};
/// `page`: Configure pages.
pub fn page(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn page(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let paper = match args.eat::<Spanned<Str>>() {
Some(name) => match Paper::from_name(&name.v) {
None => bail!(name.span, "invalid paper name"),
@ -20,87 +20,83 @@ pub fn page(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let right = args.named("right")?;
let bottom = args.named("bottom")?;
let flip = args.named("flip")?;
let body = args.expect::<Template>("body")?;
Ok(Value::template(move |ctx| {
let snapshot = ctx.state.clone();
let state = ctx.state.page_mut();
ctx.template.modify(move |state| {
let page = state.page_mut();
if let Some(paper) = paper {
state.class = paper.class();
state.size = paper.size();
page.class = paper.class();
page.size = paper.size();
}
if let Some(width) = width {
state.class = PaperClass::Custom;
state.size.width = width;
page.class = PaperClass::Custom;
page.size.width = width;
}
if let Some(height) = height {
state.class = PaperClass::Custom;
state.size.height = height;
page.class = PaperClass::Custom;
page.size.height = height;
}
if let Some(margins) = margins {
state.margins = Sides::splat(Some(margins));
page.margins = Sides::splat(Some(margins));
}
if let Some(left) = left {
state.margins.left = Some(left);
page.margins.left = Some(left);
}
if let Some(top) = top {
state.margins.top = Some(top);
page.margins.top = Some(top);
}
if let Some(right) = right {
state.margins.right = Some(right);
page.margins.right = Some(right);
}
if let Some(bottom) = bottom {
state.margins.bottom = Some(bottom);
page.margins.bottom = Some(bottom);
}
if flip.unwrap_or(false) {
std::mem::swap(&mut state.size.width, &mut state.size.height);
std::mem::swap(&mut page.size.width, &mut page.size.height);
}
});
ctx.pagebreak(false, true);
body.exec(ctx);
ctx.template.pagebreak(false);
ctx.state = snapshot;
ctx.pagebreak(true, false);
}))
Ok(Value::None)
}
/// `pagebreak`: Start a new page.
pub fn pagebreak(_: &mut EvalContext, _: &mut Arguments) -> TypResult<Value> {
Ok(Value::template(move |ctx| ctx.pagebreak(true, true)))
pub fn pagebreak(ctx: &mut EvalContext, _: &mut Arguments) -> TypResult<Value> {
ctx.template.pagebreak(true);
Ok(Value::None)
}
/// `h`: Horizontal spacing.
pub fn h(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn h(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let spacing = args.expect("spacing")?;
Ok(Value::template(move |ctx| {
ctx.spacing(GenAxis::Cross, spacing);
}))
ctx.template.spacing(GenAxis::Cross, spacing);
Ok(Value::None)
}
/// `v`: Vertical spacing.
pub fn v(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn v(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let spacing = args.expect("spacing")?;
Ok(Value::template(move |ctx| {
ctx.spacing(GenAxis::Main, spacing);
}))
ctx.template.spacing(GenAxis::Main, spacing);
Ok(Value::None)
}
/// `align`: Configure the alignment along the layouting axes.
pub fn align(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let mut horizontal = args.named("horizontal")?;
let mut vertical = args.named("vertical")?;
pub fn align(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let first = args.eat::<Align>();
let second = args.eat::<Align>();
let body = args.expect::<Template>("body")?;
let body = args.eat::<Template>();
let mut horizontal = args.named("horizontal")?;
let mut vertical = args.named("vertical")?;
for value in first.into_iter().chain(second) {
match value.axis() {
@ -114,38 +110,52 @@ pub fn align(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
}
}
Ok(Value::template(move |ctx| {
if let Some(horizontal) = horizontal {
ctx.state.aligns.cross = horizontal;
}
let realign = |template: &mut Template| {
template.modify(move |state| {
if let Some(horizontal) = horizontal {
state.aligns.cross = horizontal;
}
if let Some(vertical) = vertical {
ctx.state.aligns.main = vertical;
ctx.parbreak();
}
if let Some(vertical) = vertical {
state.aligns.main = vertical;
}
});
body.exec(ctx);
}))
if vertical.is_some() {
template.parbreak();
}
};
if let Some(body) = body {
let mut template = Template::new();
template.save();
realign(&mut template);
template += body;
template.restore();
Ok(Value::Template(template))
} else {
realign(&mut ctx.template);
Ok(Value::None)
}
}
/// `box`: Place content in a rectangular box.
pub fn boxed(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let width = args.named("width")?;
let height = args.named("height")?;
let body = args.eat().unwrap_or_default();
Ok(Value::template(move |ctx| {
let child = ctx.exec_template(&body).into();
ctx.inline(FixedNode { width, height, child });
}))
let body: Template = args.eat().unwrap_or_default();
Ok(Value::Template(Template::from_inline(move |state| {
let child = body.to_stack(state).into();
FixedNode { width, height, child }
})))
}
/// `block`: Place content in a block.
pub fn block(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let body = args.expect("body")?;
Ok(Value::template(move |ctx| {
let block = ctx.exec_template(&body);
ctx.block(block);
}))
let body: Template = args.expect("body")?;
Ok(Value::Template(Template::from_block(move |state| {
body.to_stack(state)
})))
}
/// `pad`: Pad content at the sides.
@ -155,7 +165,7 @@ pub fn pad(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let top = args.named("top")?;
let right = args.named("right")?;
let bottom = args.named("bottom")?;
let body = args.expect("body")?;
let body: Template = args.expect("body")?;
let padding = Sides::new(
left.or(all).unwrap_or_default(),
@ -164,36 +174,38 @@ pub fn pad(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
bottom.or(all).unwrap_or_default(),
);
Ok(Value::template(move |ctx| {
let child = ctx.exec_template(&body).into();
ctx.block(PadNode { padding, child });
}))
Ok(Value::Template(Template::from_block(move |state| {
PadNode {
padding,
child: body.to_stack(&state).into(),
}
})))
}
/// `stack`: Stack children along an axis.
pub fn stack(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let dir = args.named("dir")?;
let children: Vec<_> = args.all().collect();
let children: Vec<Template> = args.all().collect();
Ok(Value::template(move |ctx| {
Ok(Value::Template(Template::from_block(move |state| {
let children = children
.iter()
.map(|child| {
let child = ctx.exec_template(child).into();
StackChild::Any(child, ctx.state.aligns)
let child = child.to_stack(state).into();
StackChild::Any(child, state.aligns)
})
.collect();
let mut dirs = Gen::new(None, dir).unwrap_or(ctx.state.dirs);
let mut dirs = Gen::new(None, dir).unwrap_or(state.dirs);
// If the directions become aligned, fix up the cross direction since
// that's the one that is not user-defined.
if dirs.main.axis() == dirs.cross.axis() {
dirs.cross = ctx.state.dirs.main;
dirs.cross = state.dirs.main;
}
ctx.block(StackNode { dirs, aspect: None, children });
}))
StackNode { dirs, aspect: None, children }
})))
}
/// `grid`: Arrange children into a grid.
@ -211,7 +223,7 @@ pub fn grid(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let column_dir = args.named("column-dir")?;
let row_dir = args.named("row-dir")?;
let children: Vec<_> = args.all().collect();
let children: Vec<Template> = args.all().collect();
let tracks = Gen::new(columns, rows);
let gutter = Gen::new(
@ -219,14 +231,13 @@ pub fn grid(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
gutter_rows.unwrap_or(default),
);
Ok(Value::template(move |ctx| {
Ok(Value::Template(Template::from_block(move |state| {
let children =
children.iter().map(|child| ctx.exec_template(child).into()).collect();
let mut dirs = Gen::new(column_dir, row_dir).unwrap_or(ctx.state.dirs);
children.iter().map(|child| child.to_stack(&state).into()).collect();
// If the directions become aligned, try to fix up the direction which
// is not user-defined.
let mut dirs = Gen::new(column_dir, row_dir).unwrap_or(state.dirs);
if dirs.main.axis() == dirs.cross.axis() {
let target = if column_dir.is_some() {
&mut dirs.main
@ -234,20 +245,20 @@ pub fn grid(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
&mut dirs.cross
};
*target = if target.axis() == ctx.state.dirs.cross.axis() {
ctx.state.dirs.main
*target = if target.axis() == state.dirs.cross.axis() {
state.dirs.main
} else {
ctx.state.dirs.cross
state.dirs.cross
};
}
ctx.block(GridNode {
GridNode {
dirs,
tracks: tracks.clone(),
gutter: gutter.clone(),
children,
})
}))
}
})))
}
/// Defines size of rows and columns in a grid.

1
src/library/mod.rs
View File

@ -19,7 +19,6 @@ use std::rc::Rc;
use crate::color::{Color, RgbaColor};
use crate::diag::TypResult;
use crate::eval::{Arguments, EvalContext, Scope, Str, Template, Value};
use crate::exec::Exec;
use crate::font::{FontFamily, FontStretch, FontStyle, FontWeight, VerticalFontMetric};
use crate::geom::*;
use crate::syntax::Spanned;

114
src/library/text.rs
View File

@ -1,10 +1,15 @@
use crate::exec::{FontState, LineState};
use crate::eval::{FontState, LineState};
use crate::layout::Paint;
use super::*;
/// `font`: Configure the font.
pub fn font(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn font(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let list = args.named("family")?.or_else(|| {
let families: Vec<_> = args.all().collect();
(!families.is_empty()).then(|| FontDef(Rc::new(families)))
});
let size = args.named::<Linear>("size")?.or_else(|| args.eat());
let style = args.named("style")?;
let weight = args.named("weight")?;
@ -12,67 +17,59 @@ pub fn font(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let top_edge = args.named("top-edge")?;
let bottom_edge = args.named("bottom-edge")?;
let fill = args.named("fill")?;
let list = args.named("family")?.or_else(|| {
let families: Vec<_> = args.all().collect();
(!families.is_empty()).then(|| FontDef(Rc::new(families)))
});
let serif = args.named("serif")?;
let sans_serif = args.named("sans-serif")?;
let monospace = args.named("monospace")?;
let body = args.expect::<Template>("body")?;
Ok(Value::template(move |ctx| {
let state = ctx.state.font_mut();
ctx.template.modify(move |state| {
let font = state.font_mut();
if let Some(size) = size {
state.size = size.resolve(state.size);
font.size = size.resolve(font.size);
}
if let Some(style) = style {
state.variant.style = style;
font.variant.style = style;
}
if let Some(weight) = weight {
state.variant.weight = weight;
font.variant.weight = weight;
}
if let Some(stretch) = stretch {
state.variant.stretch = stretch;
font.variant.stretch = stretch;
}
if let Some(top_edge) = top_edge {
state.top_edge = top_edge;
font.top_edge = top_edge;
}
if let Some(bottom_edge) = bottom_edge {
state.bottom_edge = bottom_edge;
font.bottom_edge = bottom_edge;
}
if let Some(fill) = fill {
state.fill = Paint::Color(fill);
font.fill = Paint::Color(fill);
}
if let Some(FontDef(list)) = &list {
state.families_mut().list = list.clone();
font.families_mut().list = list.clone();
}
if let Some(FamilyDef(serif)) = &serif {
state.families_mut().serif = serif.clone();
font.families_mut().serif = serif.clone();
}
if let Some(FamilyDef(sans_serif)) = &sans_serif {
state.families_mut().sans_serif = sans_serif.clone();
font.families_mut().sans_serif = sans_serif.clone();
}
if let Some(FamilyDef(monospace)) = &monospace {
state.families_mut().monospace = monospace.clone();
font.families_mut().monospace = monospace.clone();
}
});
body.exec(ctx);
}))
Ok(Value::None)
}
struct FontDef(Rc<Vec<FontFamily>>);
@ -104,29 +101,29 @@ castable! {
}
/// `par`: Configure paragraphs.
pub fn par(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn par(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let par_spacing = args.named("spacing")?;
let line_spacing = args.named("leading")?;
let body = args.expect::<Template>("body")?;
Ok(Value::template(move |ctx| {
let state = ctx.state.par_mut();
ctx.template.modify(move |state| {
let par = state.par_mut();
if let Some(par_spacing) = par_spacing {
state.par_spacing = par_spacing;
par.par_spacing = par_spacing;
}
if let Some(line_spacing) = line_spacing {
state.line_spacing = line_spacing;
par.line_spacing = line_spacing;
}
});
ctx.parbreak();
body.exec(ctx);
}))
ctx.template.parbreak();
Ok(Value::None)
}
/// `lang`: Configure the language.
pub fn lang(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
pub fn lang(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
let iso = args.eat::<Str>();
let dir = if let Some(dir) = args.named::<Spanned<Dir>>("dir")? {
if dir.v.axis() == SpecAxis::Horizontal {
@ -138,16 +135,13 @@ pub fn lang(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
iso.as_deref().map(lang_dir)
};
let body = args.expect::<Template>("body")?;
if let Some(dir) = dir {
ctx.template.modify(move |state| state.dirs.cross = dir);
}
Ok(Value::template(move |ctx| {
if let Some(dir) = dir {
ctx.state.dirs.cross = dir;
}
ctx.template.parbreak();
ctx.parbreak();
body.exec(ctx);
}))
Ok(Value::None)
}
/// The default direction for the language identified by the given `iso` code.
@ -159,22 +153,23 @@ fn lang_dir(iso: &str) -> Dir {
}
}
/// `strike`: Enable striken-through text.
pub fn strike(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(args, |font| &mut font.strikethrough)
/// `strike`: Set striken-through text.
pub fn strike(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(ctx, args, |font| &mut font.strikethrough)
}
/// `underline`: Enable underlined text.
pub fn underline(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(args, |font| &mut font.underline)
/// `underline`: Set underlined text.
pub fn underline(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(ctx, args, |font| &mut font.underline)
}
/// `overline`: Add an overline above text.
pub fn overline(_: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(args, |font| &mut font.overline)
/// `overline`: Set text with an overline.
pub fn overline(ctx: &mut EvalContext, args: &mut Arguments) -> TypResult<Value> {
line_impl(ctx, args, |font| &mut font.overline)
}
fn line_impl(
_: &mut EvalContext,
args: &mut Arguments,
substate: fn(&mut FontState) -> &mut Option<Rc<LineState>>,
) -> TypResult<Value> {
@ -182,10 +177,10 @@ fn line_impl(
let thickness = args.named::<Linear>("thickness")?.or_else(|| args.eat());
let offset = args.named("offset")?;
let extent = args.named("extent")?.unwrap_or_default();
let body = args.expect::<Template>("body")?;
let body = args.expect("body")?;
// Suppress any existing strikethrough if strength is explicitly zero.
let state = thickness.map_or(true, |s| !s.is_zero()).then(|| {
let line = thickness.map_or(true, |s| !s.is_zero()).then(|| {
Rc::new(LineState {
stroke: stroke.map(Paint::Color),
thickness,
@ -194,8 +189,11 @@ fn line_impl(
})
});
Ok(Value::template(move |ctx| {
*substate(ctx.state.font_mut()) = state.clone();
body.exec(ctx);
}))
let mut template = Template::new();
template.save();
template.modify(move |state| *substate(state.font_mut()) = line.clone());
template += body;
template.restore();
Ok(Value::Template(template))
}

27
src/parse/mod.rs
View File

@ -57,23 +57,8 @@ where
// or template to know whether things like headings are allowed.
let mut tree = vec![];
while !p.eof() && f(p) {
if let Some(mut node) = node(p, &mut at_start) {
if let Some(node) = node(p, &mut at_start) {
at_start &= matches!(node, SyntaxNode::Space | SyntaxNode::Parbreak(_));
// Look for wide call.
if let SyntaxNode::Expr(Expr::Call(call)) = &mut node {
if call.wide {
let start = p.next_start();
let tree = tree_while(p, true, f);
call.args.items.push(CallArg::Pos(Expr::Template(Box::new(
TemplateExpr {
span: p.span_from(start),
tree: Rc::new(tree),
},
))));
}
}
tree.push(node);
}
}
@ -538,7 +523,7 @@ fn idents(p: &mut Parser, items: Vec<CallArg>) -> Vec<Ident> {
// Parse a template value: `[...]`.
fn template(p: &mut Parser) -> Expr {
p.start_group(Group::Bracket, TokenMode::Markup);
let tree = Rc::new(tree(p));
let tree = tree(p);
let span = p.end_group();
Expr::Template(Box::new(TemplateExpr { span, tree }))
}
@ -566,13 +551,6 @@ fn block(p: &mut Parser, scoping: bool) -> Expr {
/// Parse a function call.
fn call(p: &mut Parser, callee: Expr) -> Option<Expr> {
let mut wide = p.eat_if(Token::Excl);
if wide && p.outer_mode() == TokenMode::Code {
let span = p.span_from(callee.span().start);
p.error(span, "wide calls are only allowed directly in templates");
wide = false;
}
let mut args = match p.peek_direct() {
Some(Token::LeftParen) => args(p),
Some(Token::LeftBracket) => CallArgs {
@ -593,7 +571,6 @@ fn call(p: &mut Parser, callee: Expr) -> Option<Expr> {
Some(Expr::Call(Box::new(CallExpr {
span: p.span_from(callee.span().start),
callee,
wide,
args,
})))
}

4
src/syntax/expr.rs
View File

@ -170,7 +170,7 @@ pub struct TemplateExpr {
/// The source code location.
pub span: Span,
/// The contents of the template.
pub tree: Rc<SyntaxTree>,
pub tree: SyntaxTree,
}
/// A grouped expression: `(1 + 2)`.
@ -406,8 +406,6 @@ pub struct CallExpr {
pub span: Span,
/// The function to call.
pub callee: Expr,
/// Whether the call is wide, that is, capturing the template behind it.
pub wide: bool,
/// The arguments to the function.
pub args: CallArgs,
}

4
src/syntax/node.rs
View File

@ -5,8 +5,6 @@ use super::*;
pub enum SyntaxNode {
/// Whitespace containing less than two newlines.
Space,
/// Plain text.
Text(EcoString),
/// A forced line break: `\`.
Linebreak(Span),
/// A paragraph break: Two or more newlines.
@ -15,6 +13,8 @@ pub enum SyntaxNode {
Strong(Span),
/// Emphasized text was enabled / disabled: `_`.
Emph(Span),
/// Plain text.
Text(EcoString),
/// A raw block with optional syntax highlighting: `` `...` ``.
Raw(Box<RawNode>),
/// A section heading: `= Introduction`.

2
src/syntax/pretty.rs
View File

@ -88,11 +88,11 @@ impl Pretty for SyntaxNode {
match self {
// TODO: Handle escaping.
Self::Space => p.push(' '),
Self::Text(text) => p.push_str(text),
Self::Linebreak(_) => p.push_str(r"\"),
Self::Parbreak(_) => p.push_str("\n\n"),
Self::Strong(_) => p.push('*'),
Self::Emph(_) => p.push('_'),
Self::Text(text) => p.push_str(text),
Self::Raw(raw) => raw.pretty(p),
Self::Heading(n) => n.pretty(p),
Self::List(n) => n.pretty(p),

4
src/syntax/visit.rs
View File

@ -87,11 +87,11 @@ impl_visitors! {
visit_node(v, node: SyntaxNode) {
match node {
SyntaxNode::Space => {}
SyntaxNode::Text(_) => {}
SyntaxNode::Linebreak(_) => {}
SyntaxNode::Parbreak(_) => {}
SyntaxNode::Strong(_) => {}
SyntaxNode::Emph(_) => {}
SyntaxNode::Text(_) => {}
SyntaxNode::Raw(_) => {}
SyntaxNode::Heading(n) => v.visit_heading(n),
SyntaxNode::List(n) => v.visit_list(n),
@ -149,7 +149,7 @@ impl_visitors! {
visit_template(v, template: TemplateExpr) {
v.visit_enter();
v.visit_tree(r!(rc: template.tree));
v.visit_tree(r!(template.tree));
v.visit_exit();
}

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34
tests/typ/code/call.typ
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@ -5,7 +5,7 @@
// Ref: true
// Ommitted space.
#font(weight:bold)[Bold]
[#font(weight:bold)Bold]
// Call return value of function with body.
#let f(x, body) = (y) => [#x] + body + [#y]
@ -20,35 +20,6 @@
#f()[A]
#f([A])
---
// Ref: true
// Test multiple wide calls in separate expressions inside a template.
[
#font!(fill: eastern) - First
#font!(fill: forest) - Second
]
// Test wide call in heading.
= A #align!(right) B
C
---
// Test wide call in expression.
// Error: 2-4 wide calls are only allowed directly in templates
{f!()}
// Error: 5-7 wide calls are only allowed directly in templates
#g!(f!())
---
// Test wide call evaluation semantics.
#let x = 1
#let f(x, body) = test(x, 1)
#f!(x)
{ x = 2 }
---
// Trailing comma.
#test(1 + 1, 2,)
@ -90,9 +61,6 @@ C
#f[1](2)
---
// Error: 7 expected argument list
#func!
// Error: 7-8 expected expression, found colon
#func(:)

2
tests/typ/code/ops.typ
View File

@ -4,7 +4,7 @@
---
// Test template addition.
// Ref: true
{[*Hello ] + [world!*]}
{[*Hello ] + [world!]}
---
// Test math operators.

2
tests/typ/coma.typ
View File

@ -1,5 +1,5 @@
// Configuration with `page` and `font` functions.
#page!(width: 450pt, margins: 1cm)
#page(width: 450pt, margins: 1cm)
// There are variables and they can take normal values like strings, ...
#let city = "Berlin"

23
tests/typ/insert/circle.typ
View File

@ -5,23 +5,24 @@
Auto-sized circle. \
#circle(fill: rgb("eb5278"))[
#align!(center, center)
#align(center, center)
But, soft!
]
Center-aligned rect in auto-sized circle.
#circle(fill: forest)[
#align!(center, center)
#rect!(fill: conifer)
#pad!(5pt)
But, soft!
#align(center, center)
#rect(fill: conifer, pad(5pt)[
But, soft!
])
]
100%-width rect in auto-sized circle. \
#circle(fill: forest)[
#rect!(width: 100%, fill: conifer)
But, soft! what light through yonder window breaks?
]
#circle(fill: forest,
rect(width: 100%, fill: conifer)[
But, soft! what light through yonder window breaks?
]
)
Expanded by height.
#circle(fill: conifer)[A \ B \ C]
@ -29,8 +30,8 @@ Expanded by height.
---
// Test relative sizing.
#rect(width: 100%, height: 50pt, fill: rgb("aaa"))[
#align!(center, center)
#font!(fill: white)
#align(center, center)
#font(fill: white)
#circle(radius: 10pt, fill: eastern)[A]
#circle(height: 60%, fill: eastern)[B]
#circle(width: 20% + 20pt, fill: eastern)[C]

14
tests/typ/insert/ellipse.typ
View File

@ -2,12 +2,14 @@
---
100% rect in 100% ellipse in fixed rect. \
#rect(width: 3cm, height: 2cm, fill: rgb("2a631a"))[
#ellipse!(width: 100%, height: 100%, fill: forest)
#rect!(width: 100%, height: 100%, fill: conifer)
#align!(center, center)
Stuff inside an ellipse!
]
#rect(width: 3cm, height: 2cm, fill: rgb("2a631a"),
ellipse(width: 100%, height: 100%, fill: forest,
rect(width: 100%, height: 100%, fill: conifer)[
#align(center, center)
Stuff inside an ellipse!
]
)
)
Auto-sized ellipse. \
#ellipse(fill: conifer)[

8
tests/typ/insert/image.typ
View File

@ -17,7 +17,10 @@
#image("../../res/rhino.png")
// Fit to height of page.
#page(height: 40pt, image("../../res/rhino.png"))
[
#page(height: 40pt)
#image("../../res/rhino.png")
]
// Set width explicitly.
#image("../../res/rhino.png", width: 50pt)
@ -29,7 +32,8 @@
#image("../../res/rhino.png", width: 25pt, height: 50pt)
// Make sure the bounding-box of the image is correct.
#align(bottom, right, image("../../res/tiger.jpg", width: 60pt))
#align(bottom, right)
#image("../../res/tiger.jpg", width: 60pt)
---
// Error: 8-29 file not found

2
tests/typ/insert/rect.typ
View File

@ -3,7 +3,7 @@
---
// Test the `rect` function.
#page!(width: 150pt)
#page(width: 150pt)
// Fit to text.
#rect(fill: conifer)[Textbox]

11
tests/typ/insert/square.typ
View File

@ -3,22 +3,21 @@
---
Auto-sized square. \
#square(fill: eastern)[
#align!(center)
#pad!(5pt)
#font!(fill: white, weight: bold)
Typst
#font(fill: white, weight: bold)
#align(center)
#pad(5pt)[Typst]
]
---
// Test height overflow.
#page!(width: 75pt, height: 100pt)
#page(width: 75pt, height: 100pt)
#square(fill: conifer)[
But, soft! what light through yonder window breaks?
]
---
// Test width overflow.
#page!(width: 100pt, height: 75pt)
#page(width: 100pt, height: 75pt)
#square(fill: conifer)[
But, soft! what light through yonder window breaks?
]

2
tests/typ/layout/containers.typ
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@ -12,7 +12,7 @@ Apart
---
// Test block over multiple pages.
#page!(height: 60pt)
#page(height: 60pt)
First!
#block[

8
tests/typ/layout/grid-1.typ
View File

@ -3,7 +3,7 @@
---
#let rect(width, fill) = rect(width: width, height: 2cm, fill: fill)
#page!(width: 100pt, height: 140pt)
#page(width: 100pt, height: 140pt)
#grid(
columns: (auto, 1fr, 3fr, 0.25cm, 3%, 2mm + 10%),
rect(0.5cm, rgb("2a631a")),
@ -33,7 +33,7 @@
)
---
#page!(height: 3cm, width: 2cm)
#page(height: 3cm, width: 2cm)
#grid(
columns: (1fr, 1cm, 1fr, 1fr),
column-dir: ttb,
@ -46,8 +46,8 @@
)
---
#page!(height: 3cm, margins: 0pt)
#align!(center)
#page(height: 3cm, margins: 0pt)
#align(center)
#grid(
columns: (1fr,),
rows: (1fr, auto, 2fr),

2
tests/typ/layout/grid-2.typ
View File

@ -1,7 +1,7 @@
// Test using the `grid` function to create a finance table.
---
#page!(width: 12cm, height: 2.5cm)
#page(width: 12cm, height: 2.5cm)
#grid(
columns: 5,
gutter-columns: (2fr, 1fr, 1fr),

10
tests/typ/layout/grid-3.typ
View File

@ -1,7 +1,7 @@
// Test grid cells that overflow to the next region.
---
#page!(width: 5cm, height: 3cm)
#page(width: 5cm, height: 3cm)
#grid(
columns: 2,
gutter-rows: 3 * (8pt,),
@ -18,7 +18,7 @@
---
// Test a column that starts overflowing right after another row/column did
// that.
#page!(width: 5cm, height: 2cm)
#page(width: 5cm, height: 2cm)
#grid(
columns: 4 * (1fr,),
gutter-rows: (10pt,),
@ -32,7 +32,7 @@
---
// Test two columns in the same row overflowing by a different amount.
#page!(width: 5cm, height: 2cm)
#page(width: 5cm, height: 2cm)
#grid(
columns: 3 * (1fr,),
gutter-rows: (8pt,),
@ -48,7 +48,7 @@
---
// Test grid within a grid, overflowing.
#page!(width: 5cm, height: 2.25cm)
#page(width: 5cm, height: 2.25cm)
#grid(
columns: 4 * (1fr,),
gutter-rows: (10pt,),
@ -62,7 +62,7 @@
---
// Test partition of `fr` units before and after multi-region layout.
#page!(width: 5cm, height: 4cm)
#page(width: 5cm, height: 4cm)
#grid(
columns: 2 * (1fr,),
rows: (1fr, 2fr, auto, 1fr, 1cm),

11
tests/typ/layout/pad.typ
View File

@ -5,10 +5,11 @@
#pad(left: 10pt, [Indented!])
// All sides together.
#rect(fill: conifer)[
#pad!(10pt, right: 20pt)
#rect(width: 20pt, height: 20pt, fill: rgb("eb5278"))
]
#rect(fill: conifer,
pad(10pt, right: 20pt,
rect(width: 20pt, height: 20pt, fill: rgb("eb5278"))
)
)
Hi #box(pad(left: 10pt)[]) there
@ -27,7 +28,7 @@ Hi #box(pad(left: 10pt)[]) there
---
// Test that the pad node doesn't consume the whole region.
#page!(height: 6cm)
#page(height: 6cm)
#align(left)[Before]
#pad(10pt, image("../../res/tiger.jpg"))

37
tests/typ/layout/page.typ
View File

@ -2,44 +2,45 @@
---
// Set width and height.
#page!(width: 120pt, height: 120pt)
#page(width: 40pt)[High]
#page(height: 40pt)[Wide]
#page(width: 120pt, height: 120pt)
[#page(width: 40pt) High]
[#page(height: 40pt) Wide]
// Set all margins at once.
#page(margins: 30pt)[
[
#page(margins: 30pt)
#align(top, left)[TL]
#align(bottom, right)[BR]
]
// Set individual margins.
#page!(height: 40pt)
#page(left: 0pt, align(left)[Left])
#page(right: 0pt, align(right)[Right])
#page(top: 0pt, align(top)[Top])
#page(bottom: 0pt, align(bottom)[Bottom])
#page(height: 40pt)
[#page(left: 0pt) #align(left) Left]
[#page(right: 0pt) #align(right) Right]
[#page(top: 0pt) #align(top) Top]
[#page(bottom: 0pt) #align(bottom) Bottom]
// Ensure that specific margins override general margins.
#page(margins: 0pt, left: 20pt)[Overriden]
[#page(margins: 0pt, left: 20pt) Overriden]
// Flipped predefined paper.
#page("a11", flip: true)[Flipped A11]
[#page("a11", flip: true) Flipped A11]
// Flipped custom page size.
#page!(width: 40pt, height: 120pt)
#page!(flip: true)
#page(width: 40pt, height: 120pt)
#page(flip: true)
Wide
---
// Test a combination of pages with bodies and normal content.
#page!(height: 50pt)
#page(height: 50pt)
#page[First]
#page[Second]
[#page() First]
[#page() Second]
#pagebreak()
#pagebreak()
Fourth
#page[]
[#page(height: 25pt)]
Sixth
#page[Seventh and last]
[#page() Seventh and last]

4
tests/typ/layout/pagebreak.typ
View File

@ -3,7 +3,7 @@
---
First of two
#pagebreak()
#page!(height: 40pt)
#page(height: 40pt)
---
// Make sure that you can't do page related stuff in a container.
@ -11,7 +11,7 @@ A
#box[
B
#pagebreak()
#page("a4")[]
#page("a4")
]
C

2
tests/typ/text/basic.typ
View File

@ -1,7 +1,7 @@
// Test simple text.
---
#page!(width: 250pt, height: 110pt)
#page(width: 250pt, height: 110pt)
But, soft! what light through yonder window breaks? It is the east, and Juliet
is the sun. Arise, fair sun, and kill the envious moon, Who is already sick and

36
tests/typ/text/bidi.typ
View File

@ -3,54 +3,54 @@
---
// Test reordering with different top-level paragraph directions.
#let text = [Text טֶקסט]
#font!("EB Garamond", "Noto Serif Hebrew")
#lang!("he") {text}
#lang!("de") {text}
#font("EB Garamond", "Noto Serif Hebrew")
#lang("he") {text}
#lang("de") {text}
---
// Test that consecutive, embedded LTR runs stay LTR.
// Here, we have two runs: "A" and italic "B".
#let text = [أنت A_B_مطرC]
#font!("EB Garamond", "Noto Sans Arabic")
#lang!("ar") {text}
#lang!("de") {text}
#font("EB Garamond", "Noto Sans Arabic")
#lang("ar") {text}
#lang("de") {text}
---
// Test that consecutive, embedded RTL runs stay RTL.
// Here, we have three runs: "גֶ", bold "שֶׁ", and "ם".
#let text = [Aגֶ*שֶׁ*םB]
#font!("EB Garamond", "Noto Serif Hebrew")
#lang!("he") {text}
#lang!("de") {text}
#font("EB Garamond", "Noto Serif Hebrew")
#lang("he") {text}
#lang("de") {text}
---
// Test embedding up to level 4 with isolates.
#font!("EB Garamond", "Noto Serif Hebrew", "Twitter Color Emoji")
#lang!(dir: rtl)
#font("EB Garamond", "Noto Serif Hebrew", "Twitter Color Emoji")
#lang(dir: rtl)
א\u{2066}A\u{2067}Bב\u{2069}?
---
// Test hard line break (leads to two paragraphs in unicode-bidi).
#font!("Noto Sans Arabic", "EB Garamond")
#lang!("ar")
#font("Noto Sans Arabic", "EB Garamond")
#lang("ar")
Life المطر هو الحياة \
الحياة تمطر is rain.
---
// Test spacing.
#font!("EB Garamond", "Noto Serif Hebrew")
#font("EB Garamond", "Noto Serif Hebrew")
L #h(1cm) ריווחR \
Lריווח #h(1cm) R
---
// Test inline object.
#font!("Noto Serif Hebrew", "EB Garamond")
#lang!("he")
#font("Noto Serif Hebrew", "EB Garamond")
#lang("he")
קרנפיםRh#image("../../res/rhino.png", height: 11pt)inoחיים
---
// Test the `lang` function.
// Ref: false
// Error: 13-16 must be horizontal
#lang!(dir: ttb)
// Error: 12-15 must be horizontal
#lang(dir: ttb)

2
tests/typ/text/chinese.typ
View File

@ -1,7 +1,7 @@
// Test chinese text from Wikipedia.
---
#font!("Noto Serif CJK SC")
#font("Noto Serif CJK SC")
是美国广播公司电视剧《迷失》第3季的第22和23集，也是全剧的第71集和72集
由执行制作人戴蒙·林道夫和卡尔顿·库斯编剧，导演则是另一名执行制作人杰克·本德

10
tests/typ/text/decorations.typ
View File

@ -1,19 +1,19 @@
// Test text decorations.
---
#let red = rgb("fc0030")
// Basic strikethrough.
#strike[
Statements dreamt up by the utterly deranged.
]
#strike[Statements dreamt up by the utterly deranged.]
// Move underline down.
#underline(offset: 5pt)[Further below.]
// Different color.
#underline(rgb("fc0030"))[Critical information is conveyed here.]
#underline(red)[Critical information is conveyed here.]
// Inherits font color.
#font(fill: rgb("fc0030"), underline[Change with the wind.])
[#font(fill: red) #underline[Change with the wind.]]
// Both over- and underline.
#overline(underline[Running amongst the wolves.])

49
tests/typ/text/font.typ
View File

@ -2,42 +2,43 @@
---
// Set same font size in three different ways.
#font(22pt)[A]
#font(200%)[A]
#font(size: 16.5pt + 50%)[A]
[#font(22pt) A]
[#font(200%) A]
[#font(size: 16.5pt + 50%) A]
// Do nothing.
#font[Normal]
[#font() Normal]
// Set style (is available).
#font(style: italic)[Italic]
[#font(style: italic) Italic]
// Set weight (is available).
#font(weight: bold)[Bold]
[#font(weight: bold) Bold]
// Set stretch (not available, matching closest).
#font(stretch: 50%)[Condensed]
[#font(stretch: 50%) Condensed]
// Set family.
#font(family: "PT Sans")[Sans serif]
[#font(family: "PT Sans") Sans serif]
// Emoji.
Emoji: 🐪, 🌋, 🏞
// Math.
#font("Latin Modern Math")[
∫ 𝛼 + 3𝛽 d𝑡
]
[#font("Latin Modern Math") ∫ 𝛼 + 3𝛽 d𝑡]
// Colors.
#font(fill: eastern)[This is #font(fill: rgb("FA644B"))[way more] colorful.]
[
#font(fill: eastern)
This is [#font(fill: rgb("FA644B")) way more] colorful.
]
---
// Test top and bottom edge.
#page!(width: 170pt)
#page(width: 170pt)
#let try(top, bottom) = rect(fill: conifer)[
#font!(top-edge: top, bottom-edge: bottom)
#font(top-edge: top, bottom-edge: bottom)
`From `#top` to `#bottom
]
@ -48,31 +49,31 @@ Emoji: 🐪, 🌋, 🏞
---
// Test class definitions.
#font!(sans-serif: "PT Sans")
#font(family: sans-serif)[Sans-serif.] \
#font(monospace)[Monospace.] \
#font(monospace, monospace: ("Nope", "Latin Modern Math"))[Math.]
#font(sans-serif: "PT Sans")
[#font(family: sans-serif) Sans-serif.] \
[#font(monospace) Monospace.] \
[#font(monospace, monospace: ("Nope", "Latin Modern Math")) Math.]
---
// Error: 7-12 unexpected argument
#font(false)[]
#font(false)
---
// Error: 14-18 expected font style, found font weight
#font(style: bold, weight: "thin")[]
#font(style: bold, weight: "thin")
---
// Error: 14-15 expected string or array of strings, found integer
#font(serif: 0)[]
#font(serif: 0)
---
// Error: 19-23 unexpected argument
#font(size: 10pt, 12pt)[]
#font(size: 10pt, 12pt)
---
// Error: 28-35 unexpected argument
#font(family: "Helvetica", "Arial")[]
#font(family: "Helvetica", "Arial")
---
// Error: 7-27 unexpected argument
#font(something: "invalid")[]
#font(something: "invalid")

2
tests/typ/text/par.typ
View File

@ -1,7 +1,7 @@
// Test configuring paragraph properties.
---
#par!(spacing: 10pt, leading: 25%)
#par(spacing: 10pt, leading: 25%)
But, soft! what light through yonder window breaks? It is the east, and Juliet
is the sun.

10
tests/typ/text/shaping.typ
View File

@ -7,11 +7,11 @@
Le fira
// This should just shape nicely.
#font!("Noto Sans Arabic")
#font("Noto Sans Arabic")
دع النص يمطر عليك
// This should form a three-member family.
#font!("Twitter Color Emoji")
#font("Twitter Color Emoji")
👩‍👩‍👦 🤚🏿
// These two shouldn't be affected by a zero-width joiner.
@ -20,7 +20,7 @@ Le fira
---
// Test font fallback.
#font!("EB Garamond", "Noto Sans Arabic", "Twitter Color Emoji")
#font("EB Garamond", "Noto Sans Arabic", "Twitter Color Emoji")
// Font fallback for emoji.
A😀B
@ -40,6 +40,6 @@ A🐈中文B
---
// Test reshaping.
#font!("Noto Serif Hebrew")
#lang!("he")
#font("Noto Serif Hebrew")
#lang("he")
ס \ טֶ

4
tests/typ/text/whitespace.typ
View File

@ -30,11 +30,11 @@ A #for _ in (none,) {"B"}C
---
// Test that a run consisting only of whitespace isn't trimmed.
A#font("PT Sans")[ ]B
A[#font("PT Sans") ]B
---
// Test font change after space.
Left #font("PT Sans")[Right].
Left [#font("PT Sans")Right].
---
// Test that space at start of line is not trimmed.

25
tests/typeset.rs
View File

@ -10,15 +10,14 @@ use ttf_parser::{GlyphId, OutlineBuilder};
use walkdir::WalkDir;
use typst::color::Color;
use typst::diag::{Error, TypResult};
use typst::eval::{eval, Value};
use typst::exec::{exec, State};
use typst::diag::Error;
use typst::eval::{State, Value};
use typst::geom::{self, Length, PathElement, Point, Sides, Size};
use typst::image::ImageId;
use typst::layout::{layout, Element, Frame, Geometry, LayoutTree, Paint, Text};
use typst::loading::FsLoader;
use typst::parse::{parse, Scanner};
use typst::source::{SourceFile, SourceId};
use typst::parse::Scanner;
use typst::source::SourceFile;
use typst::syntax::{Pos, Span};
use typst::Context;
@ -225,11 +224,10 @@ fn test_part(
let compare_ref = local_compare_ref.unwrap_or(compare_ref);
let mut ok = true;
let (frames, mut errors) = match ctx.execute(id) {
Ok(tree) => {
let mut frames = layout(ctx, &tree);
let result = typeset(ctx, id);
let (frames, mut errors) = match result {
#[allow(unused_variables)]
Ok((tree, mut frames)) => {
#[cfg(feature = "layout-cache")]
(ok &= test_incremental(ctx, i, &tree, &frames));
@ -274,15 +272,6 @@ fn test_part(
(ok, compare_ref, frames)
}
fn typeset(ctx: &mut Context, id: SourceId) -> TypResult<(LayoutTree, Vec<Rc<Frame>>)> {
let source = ctx.sources.get(id);
let ast = parse(source)?;
let module = eval(ctx, id, Rc::new(ast))?;
let tree = exec(ctx, &module.template);
let frames = layout(ctx, &tree);
Ok((tree, frames))
}
#[cfg(feature = "layout-cache")]
fn test_incremental(
ctx: &mut Context,