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minijinja_lua/
lib.rs

1// SPDX-License-Identifier: MIT
2
3pub mod contrib;
4mod convert;
5mod environment;
6mod state;
7
8use mlua::LuaSerdeExt;
9
10use crate::convert::LuaSyntaxConfig;
11pub use crate::{
12    environment::LuaEnvironment,
13    state::{LuaStateMut, LuaStateRef},
14};
15
16/// Builds and returns the `minijinja` lua table.
17///
18/// The returned table has the following keys:
19///
20/// - [`Environment`](LuaEnvironment): `userdata` provides access to a [`minijinja::Environment`]
21/// - [`None`](mlua::Value::NULL): a nil-like `lightuserdata` that can be used without the downsides
22///   of `nil`. It maps to [`minijinja::value::ValueKind::None`]
23/// - `path_loader()`: creates a callback function which can be passed to `Environment:set_loader()`
24///   to load templates from the filesystem.
25/// - `type()`: a function to return types for minijinja-lua objects.
26#[cfg_attr(feature = "module", mlua::lua_module(name = "minijinja"))]
27pub fn minijinja_lua(lua: &mlua::Lua) -> mlua::Result<mlua::Table> {
28    let table = lua.create_table()?;
29
30    table.set("type", mlua::Function::wrap(contrib::minijinja_types))?;
31    table.set("path_loader", contrib::minijinja_path_loader(lua)?)?;
32
33    table.set("None", lua.null())?;
34    table.set("Environment", lua.create_proxy::<LuaEnvironment>()?)?;
35    table.set("SyntaxConfig", lua.create_proxy::<LuaSyntaxConfig>()?)?;
36
37    Ok(table)
38}