Crate tour 

Tour Template

Tour Template is a compile-time templating library with support for runtime reload.

Runtime Reload

Given type with Template derive macro:

// main.rs
use tour::Template;

#[derive(Template)]
#[template(path = "index.html")]
struct Tasks {
    tasks: Vec<String>,
}

let result = Tasks { tasks: vec![] }.render().unwrap();
println!("{result}");

Templates are searched from templates directory from project root by default, so above example will search for templates/index.html.

<!-- templates/index.html -->
{{ for task in tasks }}
    Task: {{ task.get(1..6) }}
{{ else }}
    No Tasks
{{ endfor }}

In debug mode, changing non expression like No Tasks in the source file, will change the output with the new content on the next render without recompiling.

Note that changing expression like {{ for task in tasks }} still requires recompile. An attempt to render it without recompile, will change nothing and may result in error.

This is still better than require to recompile on every small changes. In practice, quick changes iteration is used for style changes.

Re-exports

pub use tour_core::Parser;

pub use tour_core::StaticVisitor;

pub use tour_macros::Template;

Structs

Debug

Wrap fmt::Debug to TemplDisplay.

Display

Wrap fmt::Display to TemplDisplay.

Escape

Wrap TemplWrite to escape input.

FmtTemplWrite

Wrap std::fmt::Write to TemplWrite.

IoTemplWrite

Wrap std::io::Write to TemplWrite.

TemplWriteFmt

Wrap TemplWrite to std::fmt::Write.

TemplWriteIo

Wrap TemplWrite to std::io::Write.

Enums

Error

An error that can occur during rendering.

Traits

TemplDisplay

Analogous to std::fmt::Display without the Formatter.

TemplWrite

Analogous to std::fmt::Write without the Formatter.

Template

A template content.

Type Aliases

Result

Result alias for Error.