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//! The compiler for the _Typst_ markup language.
//!
//! # Steps
//! - **Parsing:** The compiler first transforms a plain string into an
//! [iterator of tokens][tokens]. This token stream is [parsed] into a [syntax
//! tree]. The tree itself is untyped, but the [AST] module provides a typed
//! layer over it.
//! - **Evaluation:** The next step is to [evaluate] the markup. This produces a
//! [module], consisting of a scope of values that were exported by the code
//! and [content], a hierarchical, styled representation of what was written
//! in the source file. The nodes of the content tree are well structured and
//! order-independent and thus much better suited for further processing than
//! the raw markup.
//! - **Typesetting:** Next, the content is [typeset] into a [document]
//! containing one [frame] per page with elements and fixed positions.
//! - **Exporting:** These frames can finally be exported into an output format
//! (currently supported are [PDF] and [raster images]).
//!
//! [tokens]: syntax::Tokens
//! [parsed]: syntax::parse
//! [syntax tree]: syntax::SyntaxNode
//! [AST]: syntax::ast
//! [evaluate]: model::eval
//! [module]: model::Module
//! [content]: model::Content
//! [typeset]: model::typeset
//! [document]: doc::Document
//! [frame]: doc::Frame
//! [PDF]: export::pdf
//! [raster images]: export::render
#![recursion_limit = "1000"]
extern crate self as typst;
#[macro_use]
pub mod util;
#[macro_use]
pub mod geom;
#[macro_use]
pub mod diag;
#[macro_use]
pub mod model;
pub mod doc;
pub mod export;
pub mod font;
pub mod ide;
pub mod image;
pub mod syntax;
use std::path::Path;
use comemo::{Prehashed, Track};
use model::Tracer;
use crate::diag::{FileResult, SourceResult};
use crate::doc::Document;
use crate::font::{Font, FontBook};
use crate::model::{Library, Route};
use crate::syntax::{Source, SourceId};
use crate::util::Buffer;
/// Compile a source file into a fully layouted document.
pub fn compile(world: &(dyn World + 'static), source: &Source) -> SourceResult<Document> {
// Evaluate the source file into a module.
let route = Route::default();
let mut tracer = Tracer::default();
let module = model::eval(world.track(), route.track(), tracer.track_mut(), source)?;
// Typeset the module's contents.
model::typeset(world.track(), &module.content())
}
/// The environment in which typesetting occurs.
#[comemo::track]
pub trait World {
/// The path relative to which absolute paths are.
fn root(&self) -> &Path;
/// The standard library.
fn library(&self) -> &Prehashed<Library>;
/// Metadata about all known fonts.
fn book(&self) -> &Prehashed<FontBook>;
/// Try to access the font with the given id.
fn font(&self, id: usize) -> Option<Font>;
/// Try to access a file at a path.
fn file(&self, path: &Path) -> FileResult<Buffer>;
/// Try to resolve the unique id of a source file.
fn resolve(&self, path: &Path) -> FileResult<SourceId>;
/// Access a source file by id.
fn source(&self, id: SourceId) -> &Source;
}
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