135 lines
3.7 KiB
Rust
135 lines
3.7 KiB
Rust
//! The standard library.
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//!
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//! Call [`new`] to obtain a [`Scope`] containing all standard library
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//! definitions.
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mod elements;
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mod layout;
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mod text;
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mod utility;
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pub use elements::*;
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pub use layout::*;
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pub use text::*;
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pub use utility::*;
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use std::convert::TryFrom;
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use std::rc::Rc;
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use crate::color::{Color, RgbaColor};
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use crate::diag::TypResult;
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use crate::eval::{EvalContext, FuncArgs, Scope, Template, Type, Value};
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use crate::exec::Exec;
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use crate::font::{FontFamily, FontStretch, FontStyle, FontWeight, VerticalFontMetric};
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use crate::geom::*;
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use crate::syntax::Spanned;
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use crate::util::EcoString;
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/// Construct a scope containing all standard library definitions.
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pub fn new() -> Scope {
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let mut std = Scope::new();
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// Text.
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std.def_func("font", font);
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std.def_func("par", par);
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std.def_func("lang", lang);
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std.def_func("strike", strike);
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std.def_func("underline", underline);
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std.def_func("overline", overline);
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// Layout.
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std.def_func("page", page);
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std.def_func("pagebreak", pagebreak);
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std.def_func("h", h);
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std.def_func("v", v);
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std.def_func("align", align);
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std.def_func("box", boxed);
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std.def_func("block", block);
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std.def_func("pad", pad);
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std.def_func("stack", stack);
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std.def_func("grid", grid);
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// Elements.
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std.def_func("image", image);
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std.def_func("rect", rect);
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std.def_func("square", square);
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std.def_func("ellipse", ellipse);
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std.def_func("circle", circle);
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// Utility.
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std.def_func("type", type_);
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std.def_func("repr", repr);
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std.def_func("len", len);
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std.def_func("rgb", rgb);
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std.def_func("min", min);
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std.def_func("max", max);
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// Colors.
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std.def_const("white", RgbaColor::WHITE);
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std.def_const("black", RgbaColor::BLACK);
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std.def_const("eastern", RgbaColor::new(0x23, 0x9D, 0xAD, 0xFF));
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std.def_const("conifer", RgbaColor::new(0x9f, 0xEB, 0x52, 0xFF));
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std.def_const("forest", RgbaColor::new(0x43, 0xA1, 0x27, 0xFF));
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// Arbitrary constants.
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std.def_const("ltr", Dir::LTR);
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std.def_const("rtl", Dir::RTL);
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std.def_const("ttb", Dir::TTB);
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std.def_const("btt", Dir::BTT);
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std.def_const("start", Align::Start);
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std.def_const("center", Align::Center);
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std.def_const("end", Align::End);
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std.def_const("left", Align::Left);
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std.def_const("right", Align::Right);
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std.def_const("top", Align::Top);
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std.def_const("bottom", Align::Bottom);
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std.def_const("serif", FontFamily::Serif);
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std.def_const("sans-serif", FontFamily::SansSerif);
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std.def_const("monospace", FontFamily::Monospace);
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std.def_const("normal", FontStyle::Normal);
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std.def_const("italic", FontStyle::Italic);
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std.def_const("oblique", FontStyle::Oblique);
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std.def_const("regular", FontWeight::REGULAR);
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std.def_const("bold", FontWeight::BOLD);
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std.def_const("ascender", VerticalFontMetric::Ascender);
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std.def_const("cap-height", VerticalFontMetric::CapHeight);
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std.def_const("x-height", VerticalFontMetric::XHeight);
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std.def_const("baseline", VerticalFontMetric::Baseline);
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std.def_const("descender", VerticalFontMetric::Descender);
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std
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}
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dynamic! {
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Dir: "direction",
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}
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dynamic! {
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Align: "alignment",
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}
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dynamic! {
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FontFamily: "font family",
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Value::Str(string) => Self::Named(string.to_lowercase()),
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}
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dynamic! {
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FontStyle: "font style",
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}
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dynamic! {
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FontWeight: "font weight",
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Value::Int(number) => {
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u16::try_from(number).map_or(Self::BLACK, Self::from_number)
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},
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}
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dynamic! {
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FontStretch: "font stretch",
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Value::Relative(relative) => Self::from_ratio(relative.get() as f32),
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}
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dynamic! {
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VerticalFontMetric: "vertical font metric",
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}
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