Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 108 insertions, 0 deletions

diff --git a/third_party/rust/fluent/src/lib.rs b/third_party/rust/fluent/src/lib.rs
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+++ b/third_party/rust/fluent/src/lib.rs
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+//! Fluent is a modern localization system designed to improve how software is translated.
+//!
+//! The Rust implementation provides the low level components for syntax operations, like parser
+//! and AST, and the core localization struct - [`FluentBundle`].
+//!
+//! [`FluentBundle`] is the low level container for storing and formatting localization messages
+//! in a single locale.
+//!
+//! This crate provides also a number of structures needed for a localization API such as [`FluentResource`],
+//! [`FluentMessage`], [`FluentArgs`], and [`FluentValue`].
+//!
+//! Together, they allow implementations to build higher-level APIs that use [`FluentBundle`]
+//! and add user friendly helpers, framework bindings, error fallbacking,
+//! language negotiation between user requested languages and available resources,
+//! and I/O for loading selected resources.
+//!
+//! # Example
+//!
+//! ```
+//! use fluent::{FluentBundle, FluentValue, FluentResource, FluentArgs};
+//!
+//! // Used to provide a locale for the bundle.
+//! use unic_langid::LanguageIdentifier;
+//!
+//! let ftl_string = String::from("
+//! hello-world = Hello, world!
+//! intro = Welcome, { $name }.
+//! ");
+//! let res = FluentResource::try_new(ftl_string)
+//!     .expect("Failed to parse an FTL string.");
+//!
+//! let langid_en: LanguageIdentifier = "en-US".parse().expect("Parsing failed");
+//! let mut bundle = FluentBundle::new(vec![langid_en]);
+//!
+//! bundle
+//!     .add_resource(res)
+//!     .expect("Failed to add FTL resources to the bundle.");
+//!
+//! let msg = bundle.get_message("hello-world")
+//!     .expect("Message doesn't exist.");
+//! let mut errors = vec![];
+//! let pattern = msg.value()
+//!     .expect("Message has no value.");
+//! let value = bundle.format_pattern(&pattern, None, &mut errors);
+//!
+//! assert_eq!(&value, "Hello, world!");
+//!
+//! let mut args = FluentArgs::new();
+//! args.set("name", FluentValue::from("John"));
+//!
+//! let msg = bundle.get_message("intro")
+//!     .expect("Message doesn't exist.");
+//! let mut errors = vec![];
+//! let pattern = msg.value().expect("Message has no value.");
+//! let value = bundle.format_pattern(&pattern, Some(&args), &mut errors);
+//!
+//! // The FSI/PDI isolation marks ensure that the direction of
+//! // the text from the variable is not affected by the translation.
+//! assert_eq!(value, "Welcome, \u{2068}John\u{2069}.");
+//! ```
+//!
+//! # Ergonomics & Higher Level APIs
+//!
+//! Reading the example, you may notice how verbose it feels.
+//! Many core methods are fallible, others accumulate errors, and there
+//! are intermediate structures used in operations.
+//!
+//! This is intentional as it serves as building blocks for variety of different
+//! scenarios allowing implementations to handle errors, cache and
+//! optimize results.
+//!
+//! At the moment it is expected that users will use
+//! the `fluent-bundle` crate directly, while the ecosystem
+//! matures and higher level APIs are being developed.
+//!
+//! [`FluentBundle`]: ./struct.FluentBundle.html
+//! [`FluentResource`]: ./struct.FluentResource.html
+//! [`FluentMessage`]: ./struct.FluentMessage.html
+//! [`FluentArgs`]: ./type.FluentArgs.html
+//! [`FluentValue`]: ./struct.FluentValue.html
+
+pub use fluent_bundle::*;
+
+/// A helper macro to simplify creation of FluentArgs.
+///
+/// # Example
+///
+/// ```
+/// use fluent::fluent_args;
+///
+/// let mut args = fluent_args![
+///     "name" => "John",
+///     "emailCount" => 5
+/// ];
+///
+/// ```
+#[macro_export]
+macro_rules! fluent_args {
+    ( $($key:expr => $value:expr),* ) => {
+        {
+            let mut args: $crate::FluentArgs = $crate::FluentArgs::new();
+            $(
+                args.set($key, $value);
+            )*
+            args
+        }
+    };
+}