Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 185 insertions, 0 deletions

diff --git a/third_party/rust/askama/src/lib.rs b/third_party/rust/askama/src/lib.rs
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+//! Askama implements a type-safe compiler for Jinja-like templates.
+//! It lets you write templates in a Jinja-like syntax,
+//! which are linked to a `struct` defining the template context.
+//! This is done using a custom derive implementation (implemented
+//! in [`askama_derive`](https://crates.io/crates/askama_derive)).
+//!
+//! For feature highlights and a quick start, please review the
+//! [README](https://github.com/djc/askama/blob/main/README.md).
+//!
+//! The primary documentation for this crate now lives in
+//! [the book](https://djc.github.io/askama/).
+//!
+//! # Creating Askama templates
+//!
+//! An Askama template is a `struct` definition which provides the template
+//! context combined with a UTF-8 encoded text file (or inline source, see
+//! below). Askama can be used to generate any kind of text-based format.
+//! The template file's extension may be used to provide content type hints.
+//!
+//! A template consists of **text contents**, which are passed through as-is,
+//! **expressions**, which get replaced with content while being rendered, and
+//! **tags**, which control the template's logic.
+//! The template syntax is very similar to [Jinja](http://jinja.pocoo.org/),
+//! as well as Jinja-derivatives like [Twig](http://twig.sensiolabs.org/) or
+//! [Tera](https://github.com/Keats/tera).
+//!
+//! ## The `template()` attribute
+//!
+//! Askama works by generating one or more trait implementations for any
+//! `struct` type decorated with the `#[derive(Template)]` attribute. The
+//! code generation process takes some options that can be specified through
+//! the `template()` attribute. The following sub-attributes are currently
+//! recognized:
+//!
+//! * `path` (as `path = "foo.html"`): sets the path to the template file. The
+//!   path is interpreted as relative to the configured template directories
+//!   (by default, this is a `templates` directory next to your `Cargo.toml`).
+//!   The file name extension is used to infer an escape mode (see below). In
+//!   web framework integrations, the path's extension may also be used to
+//!   infer the content type of the resulting response.
+//!   Cannot be used together with `source`.
+//! * `source` (as `source = "{{ foo }}"`): directly sets the template source.
+//!   This can be useful for test cases or short templates. The generated path
+//!   is undefined, which generally makes it impossible to refer to this
+//!   template from other templates. If `source` is specified, `ext` must also
+//!   be specified (see below). Cannot be used together with `path`.
+//! * `ext` (as `ext = "txt"`): lets you specify the content type as a file
+//!   extension. This is used to infer an escape mode (see below), and some
+//!   web framework integrations use it to determine the content type.
+//!   Cannot be used together with `path`.
+//! * `print` (as `print = "code"`): enable debugging by printing nothing
+//!   (`none`), the parsed syntax tree (`ast`), the generated code (`code`)
+//!   or `all` for both. The requested data will be printed to stdout at
+//!   compile time.
+//! * `escape` (as `escape = "none"`): override the template's extension used for
+//!   the purpose of determining the escaper for this template. See the section
+//!   on configuring custom escapers for more information.
+//! * `syntax` (as `syntax = "foo"`): set the syntax name for a parser defined
+//!   in the configuration file. The default syntax , "default",  is the one
+//!   provided by Askama.
+
+#![forbid(unsafe_code)]
+#![deny(elided_lifetimes_in_paths)]
+#![deny(unreachable_pub)]
+
+pub use askama_shared as shared;
+
+pub use askama_escape::{Html, Text};
+
+/// Main `Template` trait; implementations are generally derived
+///
+/// If you need an object-safe template, use [`DynTemplate`].
+pub trait Template {
+    /// Helper method which allocates a new `String` and renders into it
+    fn render(&self) -> Result<String> {
+        let mut buf = String::with_capacity(Self::SIZE_HINT);
+        self.render_into(&mut buf)?;
+        Ok(buf)
+    }
+
+    /// Renders the template to the given `writer` buffer
+    fn render_into(&self, writer: &mut (impl std::fmt::Write + ?Sized)) -> Result<()>;
+
+    /// The template's extension, if provided
+    const EXTENSION: Option<&'static str>;
+
+    /// Provides a conservative estimate of the expanded length of the rendered template
+    const SIZE_HINT: usize;
+
+    /// The MIME type (Content-Type) of the data that gets rendered by this Template
+    const MIME_TYPE: &'static str;
+}
+
+/// Object-safe wrapper trait around [`Template`] implementers
+///
+/// This trades reduced performance (mostly due to writing into `dyn Write`) for object safety.
+pub trait DynTemplate {
+    /// Helper method which allocates a new `String` and renders into it
+    fn dyn_render(&self) -> Result<String>;
+
+    /// Renders the template to the given `writer` buffer
+    fn dyn_render_into(&self, writer: &mut dyn std::fmt::Write) -> Result<()>;
+
+    /// Helper function to inspect the template's extension
+    fn extension(&self) -> Option<&'static str>;
+
+    /// Provides a conservative estimate of the expanded length of the rendered template
+    fn size_hint(&self) -> usize;
+
+    /// The MIME type (Content-Type) of the data that gets rendered by this Template
+    fn mime_type(&self) -> &'static str;
+}
+
+impl<T: Template> DynTemplate for T {
+    fn dyn_render(&self) -> Result<String> {
+        <Self as Template>::render(self)
+    }
+
+    fn dyn_render_into(&self, writer: &mut dyn std::fmt::Write) -> Result<()> {
+        <Self as Template>::render_into(self, writer)
+    }
+
+    fn extension(&self) -> Option<&'static str> {
+        Self::EXTENSION
+    }
+
+    fn size_hint(&self) -> usize {
+        Self::SIZE_HINT
+    }
+
+    fn mime_type(&self) -> &'static str {
+        Self::MIME_TYPE
+    }
+}
+
+pub use crate::shared::filters;
+pub use crate::shared::helpers;
+pub use crate::shared::{read_config_file, Error, MarkupDisplay, Result};
+pub use askama_derive::*;
+
+#[deprecated(since = "0.11.1", note = "The only function in this mod is deprecated")]
+pub mod mime {
+    #[cfg(all(feature = "mime_guess", feature = "mime"))]
+    #[deprecated(since = "0.11.1", note = "Use Template::MIME_TYPE instead")]
+    pub use crate::shared::extension_to_mime_type;
+}
+
+/// Old build script helper to rebuild crates if contained templates have changed
+///
+/// This function is now deprecated and does nothing.
+#[deprecated(
+    since = "0.8.1",
+    note = "file-level dependency tracking is handled automatically without build script"
+)]
+pub fn rerun_if_templates_changed() {}
+
+#[cfg(test)]
+mod tests {
+    use super::{DynTemplate, Template};
+
+    #[test]
+    fn dyn_template() {
+        struct Test;
+        impl Template for Test {
+            fn render_into(
+                &self,
+                writer: &mut (impl std::fmt::Write + ?Sized),
+            ) -> askama_shared::Result<()> {
+                Ok(writer.write_str("test")?)
+            }
+
+            const EXTENSION: Option<&'static str> = Some("txt");
+
+            const SIZE_HINT: usize = 4;
+
+            const MIME_TYPE: &'static str = "text/plain; charset=utf-8";
+        }
+
+        fn render(t: &dyn DynTemplate) -> String {
+            t.dyn_render().unwrap()
+        }
+
+        assert_eq!(render(&Test), "test");
+    }
+}