Get the engine in workable condition

Cargo.lock

@@ -2,6 +2,21 @@
 # It is not intended for manual editing.
 version = 3
 
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+
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@@ -77,6 +92,71 @@ version = "1.1.0"
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 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
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+ "async-trait",
+ "axum-core",
+ "bitflags",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "hyper",
+ "itoa",
+ "matchit",
+ "memchr",
+ "mime",
+ "percent-encoding",
+ "pin-project-lite",
+ "rustversion",
+ "serde",
+ "serde_json",
+ "serde_path_to_error",
+ "serde_urlencoded",
+ "sync_wrapper",
+ "tokio",
+ "tower",
+ "tower-http",
+ "tower-layer",
+ "tower-service",
+]
+
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+dependencies = [
+ "async-trait",
+ "bytes",
+ "futures-util",
+ "http",
+ "http-body",
+ "mime",
+ "rustversion",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
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+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "bevy_macro_utils"
 version = "0.8.1"
@@ -169,12 +249,51 @@ version = "3.12.0"
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 checksum = "0d261e256854913907f67ed06efbc3338dfe6179796deefc1ff763fc1aee5535"
 
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+
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+dependencies = [
+ "backtrace",
+ "color-spantrace",
+ "eyre",
+ "indenter",
+ "once_cell",
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+ "tracing-error",
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+
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+dependencies = [
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+ "owo-colors",
+ "tracing-core",
+ "tracing-error",
+]
+
 [[package]]
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@@ -244,6 +363,19 @@ dependencies = [
  "num_cpus",
 ]
 
+[[package]]
+name = "demo_hornbeam_project"
+version = "0.1.0"
+dependencies = [
+ "axum",
+ "color-eyre",
+ "eyre",
+ "hornbeam",
+ "tokio",
+ "tracing",
+ "tracing-subscriber",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.6"
@@ -298,6 +430,16 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c2b6b5a29c02cdc822728b7d7b8ae1bab3e3b05d44522770ddd49722eeac7eb"
+dependencies = [
+ "indenter",
+ "once_cell",
+]
+
 [[package]]
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@@ -396,6 +538,48 @@ version = "1.0.7"
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+dependencies = [
+ "futures-core",
+]
+
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+dependencies = [
+ "futures-core",
+ "futures-task",
+ "pin-project-lite",
+ "pin-utils",
+]
+
 [[package]]
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@@ -419,6 +603,12 @@ dependencies = [
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+[[package]]
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+
 [[package]]
 name = "globset"
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@@ -491,6 +681,7 @@ dependencies = [
  "itertools",
  "pollster",
  "thiserror",
+ "walkdir",
 ]
 
 [[package]]
@@ -518,6 +709,69 @@ dependencies = [
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+dependencies = [
+ "bytes",
+ "fnv",
+ "itoa",
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+dependencies = [
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+ "bytes",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "http",
+ "http-body",
+ "httparse",
+ "httpdate",
+ "itoa",
+ "pin-project-lite",
+ "socket2",
+ "tokio",
+ "tower-service",
+ "tracing",
+ "want",
+]
+
 [[package]]
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@@ -535,6 +789,12 @@ dependencies = [
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@@ -641,12 +901,64 @@ dependencies = [
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+dependencies = [
+ "regex-automata",
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+
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+dependencies = [
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+dependencies = [
+ "libc",
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+ "overload",
+ "winapi",
+]
+
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@@ -657,12 +969,33 @@ dependencies = [
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 ]
 
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "memchr",
+]
+
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+
 [[package]]
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@@ -686,6 +1019,12 @@ dependencies = [
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 ]
 
+[[package]]
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+
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@@ -752,12 +1091,38 @@ dependencies = [
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+[[package]]
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+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+
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@@ -808,18 +1173,39 @@ dependencies = [
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 ]
 
+[[package]]
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+dependencies = [
+ "regex-syntax",
+]
+
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+
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+
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@@ -878,6 +1264,27 @@ dependencies = [
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+[[package]]
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+version = "0.1.9"
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+ "form_urlencoded",
+ "itoa",
+ "ryu",
+ "serde",
+]
+
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@@ -889,6 +1296,24 @@ dependencies = [
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 ]
 
+[[package]]
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+ "lazy_static",
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+dependencies = [
+ "libc",
+]
+
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@@ -923,6 +1348,16 @@ dependencies = [
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+[[package]]
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+dependencies = [
+ "libc",
+ "winapi",
+]
+
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@@ -943,6 +1378,12 @@ dependencies = [
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 ]
 
+[[package]]
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+
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@@ -991,6 +1432,37 @@ dependencies = [
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+ "libc",
+ "memchr",
+ "mio",
+ "num_cpus",
+ "parking_lot",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "socket2",
+ "tokio-macros",
+ "windows-sys 0.42.0",
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+ "quote",
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@@ -1000,6 +1472,53 @@ dependencies = [
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+ "pin-project",
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+name = "tower-http"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5d1d42a9b3f3ec46ba828e8d376aec14592ea199f70a06a548587ecd1c4ab658"
+dependencies = [
+ "bitflags",
+ "bytes",
+ "futures-core",
+ "futures-util",
+ "http",
+ "http-body",
+ "http-range-header",
+ "pin-project-lite",
+ "tower",
+ "tower-layer",
+ "tower-service",
+]
+
+[[package]]
+name = "tower-layer"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c20c8dbed6283a09604c3e69b4b7eeb54e298b8a600d4d5ecb5ad39de609f1d0"
+
+[[package]]
+name = "tower-service"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6bc1c9ce2b5135ac7f93c72918fc37feb872bdc6a5533a8b85eb4b86bfdae52"
+
 [[package]]
 name = "tracing"
 version = "0.1.37"
@@ -1007,10 +1526,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ce8c33a8d48bd45d624a6e523445fd21ec13d3653cd51f681abf67418f54eb8"
 dependencies = [
  "cfg-if",
+ "log",
  "pin-project-lite",
+ "tracing-attributes",
  "tracing-core",
 ]
 
+[[package]]
+name = "tracing-attributes"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4017f8f45139870ca7e672686113917c71c7a6e02d4924eda67186083c03081a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "tracing-core"
 version = "0.1.30"
@@ -1018,8 +1550,54 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24eb03ba0eab1fd845050058ce5e616558e8f8d8fca633e6b163fe25c797213a"
 dependencies = [
  "once_cell",
+ "valuable",
 ]
 
+[[package]]
+name = "tracing-error"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d686ec1c0f384b1277f097b2f279a2ecc11afe8c133c1aabf036a27cb4cd206e"
+dependencies = [
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "tracing-log"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ddad33d2d10b1ed7eb9d1f518a5674713876e97e5bb9b7345a7984fbb4f922"
+dependencies = [
+ "lazy_static",
+ "log",
+ "tracing-core",
+]
+
+[[package]]
+name = "tracing-subscriber"
+version = "0.3.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6176eae26dd70d0c919749377897b54a9276bd7061339665dd68777926b5a70"
+dependencies = [
+ "matchers",
+ "nu-ansi-term",
+ "once_cell",
+ "regex",
+ "sharded-slab",
+ "smallvec",
+ "thread_local",
+ "tracing",
+ "tracing-core",
+ "tracing-log",
+]
+
+[[package]]
+name = "try-lock"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3528ecfd12c466c6f163363caf2d02a71161dd5e1cc6ae7b34207ea2d42d81ed"
+
 [[package]]
 name = "type-map"
 version = "0.4.0"
@@ -1106,6 +1684,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "valuable"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830b7e5d4d90034032940e4ace0d9a9a057e7a45cd94e6c007832e39edb82f6d"
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
@@ -1123,6 +1707,16 @@ dependencies = [
  "winapi-util",
 ]
 
+[[package]]
+name = "want"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ce8a968cb1cd110d136ff8b819a556d6fb6d919363c61534f6860c7eb172ba0"
+dependencies = [
+ "log",
+ "try-lock",
+]
+
 [[package]]
 name = "wasi"
 version = "0.11.0+wasi-snapshot-preview1"

Cargo.toml

@@ -4,7 +4,8 @@ members = [
     "hornbeam_ir",
     "hornbeam_interpreter",
     "hornbeam_macros",
-    "hornbeam"
+    "hornbeam",
+    "demo_hornbeam_project",
 ]
 
 

hornbeam_grammar/src/hornbeam.pest

@@ -78,7 +78,7 @@ ElementName = { componentName | htmlBuiltin }
 componentName = _{ ASCII_ALPHA_UPPER ~ ASCII_ALPHANUMERIC+ }
 
 // Built-in tag names
-htmlBuiltin = _{ "html" | "head" | "body" | "x" | "div" | "span" }
+htmlBuiltin = _{ "html" | "head" | "body" | "a" | "abbr" | "address" | "area" | "article" | "aside" | "audio" | "b" | "base" | "bdi" | "bdo" | "blockquote" | "br" | "button" | "canvas" | "caption" | "cite" | "code" | "col" | "colgroup" | "data" | "datalist" | "dd" | "del" | "details" | "dfn" | "dialog" | "div" | "dl" | "dt" | "em" | "embed" | "fieldset" | "figcaption" | "figure" | "footer" | "form" | "h1" | "h2" | "h3" | "h4" | "h5" | "h6" | "header" | "hgroup" | "hr" | "i" | "iframe" | "img" | "input" | "ins" | "kbd" | "label" | "legend" | "li" | "link" | "main" | "map" | "mark" | "math" | "menu" | "menuitem" | "meta" | "meter" | "nav" | "noscript" | "object" | "ol" | "optgroup" | "option" | "output" | "p" | "param" | "picture" | "pre" | "progress" | "q" | "rb" | "rp" | "rt" | "rtc" | "ruby" | "s" | "samp" | "script" | "section" | "select" | "slot" | "small" | "source" | "span" | "strong" | "style" | "sub" | "summary" | "sup" | "svg" | "table" | "tbody" | "td" | "template" | "textarea" | "tfoot" | "th" | "thead" | "time" | "title" | "tr" | "track" | "u" | "ul" | "var" | "video" | "wbr" }
 
 // We don't actually want to consume the EOI because then we'll get an annoying extra node in our parse...
 nlOrEoi = _{ NEWLINE | &EOI }

hornbeam_interpreter/Cargo.toml

@@ -13,6 +13,8 @@ fluent-templates = { version = "0.8.0", optional = true }
 bevy_reflect = { version = "0.8.1" }
 html-escape = "0.2.13"
 
+walkdir = "2.3.2"
+
 async-trait = "0.1.64"
 async-recursion = "1.0.2"
 thiserror = "1.0.38"

hornbeam_interpreter/src/engine.rs

@@ -66,7 +66,8 @@ lazy_static! {
 
 impl Value {
     pub fn from_reflect(reflect: Box<dyn Reflect>) -> Self {
-        let ti = reflect.type_id();
+        // Caution! Not `reflect.type_id()`
+        let ti = reflect.get_type_info().type_id();
         if ti == *U8_TYPEID {
             Value::Int(u8::from_reflect(reflect.deref()).unwrap() as i64)
         } else if ti == *U16_TYPEID {

hornbeam_interpreter/src/interface.rs

@@ -10,7 +10,9 @@ use std::convert::Infallible;
 use std::fmt::Debug;
 use std::io;
 use std::io::Write;
+use std::path::Path;
 use std::sync::Arc;
+use walkdir::WalkDir;
 
 /// A localisation system.
 /// If unused, can use `NoLocalisation`.
@@ -45,14 +47,16 @@ pub struct LoadedTemplates<LS> {
     localisation: Arc<LS>,
 }
 
+#[derive(Clone, Debug, Default)]
 pub struct Params {
     pub(crate) params: BTreeMap<String, Value>,
 }
 
 impl Params {
-    pub fn set(mut self, name: String, value: impl Reflect) {
+    pub fn set(mut self, name: impl Into<String>, value: impl Reflect) -> Self {
         self.params
-            .insert(name, Value::from_reflect(Box::new(value)));
+            .insert(name.into(), Value::from_reflect(Box::new(value)));
+        self
     }
 }
 
@@ -98,12 +102,53 @@ impl<'a, LS> LoadedTemplates<LS> {
         Ok(())
     }
 
+    /// Given the path to a directory, recursively walks the directory and loads all `.hnb` files
+    /// as templates.
+    ///
+    /// Fails if any template fails to be read, or we don't have enough permissions to enter all
+    /// directories.
+    pub fn load_templates_from_dir(
+        &mut self,
+        path: impl AsRef<Path>,
+    ) -> Result<(), InterpreterError<Infallible, Infallible>> {
+        let base_path = path.as_ref();
+        for file in WalkDir::new(base_path) {
+            let file = file.map_err(|e| InterpreterError::TemplateFindError(format!("{e:?}")))?;
+            let name = if let Some(name) = file.file_name().to_str() {
+                name
+            } else {
+                continue;
+            };
+            if name.len() < 5 || !name.to_lowercase().ends_with(".hnb") {
+                continue;
+            }
+
+            let relative_path = file
+                .path()
+                .strip_prefix(base_path)
+                .map_err(|e| InterpreterError::TemplateFindError(format!("{e:?}")))?;
+
+            let template_name = &name[..name.len() - 4];
+            let file_path = file.path();
+            let template_text = std::fs::read_to_string(file.path()).map_err(|e| {
+                InterpreterError::TemplateFindError(format!("failed to read {file_path:?}: {e:?}"))
+            })?;
+            self.load_template_from_str(
+                template_name,
+                &template_text,
+                &relative_path.to_string_lossy() as &str,
+            )?;
+        }
+
+        Ok(())
+    }
+
     pub fn prepare(
         &self,
         template_name: &str,
         fragment_name: Option<&str>,
         params: Params,
-    ) -> PreparedTemplate<'a, LS> {
+    ) -> PreparedTemplate<LS> {
         PreparedTemplate {
             all_instructions: Arc::new(self.template_functions.clone()),
             entrypoint: if let Some(frag) = fragment_name {
@@ -111,23 +156,20 @@ impl<'a, LS> LoadedTemplates<LS> {
             } else {
                 template_name.to_owned()
             },
-            scope: Scope {
+            variables: params,
-                variables: params.params,
-                slots: BTreeMap::new(),
-            },
             localisation: self.localisation.clone(),
         }
     }
 }
 
-pub struct PreparedTemplate<'a, LS> {
+pub struct PreparedTemplate<LS> {
     pub(crate) all_instructions: Arc<BTreeMap<String, Arc<Vec<Step>>>>,
     pub(crate) entrypoint: String,
-    pub(crate) scope: Scope<'a>,
+    pub(crate) variables: Params,
-    pub localisation: Arc<LS>,
+    pub(crate) localisation: Arc<LS>,
 }
 
-impl<'a, LS: LocalisationSystem + Sync + Send> PreparedTemplate<'a, LS> {
+impl<LS: LocalisationSystem + Sync + Send> PreparedTemplate<LS> {
     pub async fn render_to_output<O: OutputSystem + Send>(
         self,
         output: O,
@@ -137,7 +179,10 @@ impl<'a, LS: LocalisationSystem + Sync + Send> PreparedTemplate<'a, LS> {
             program: &self.all_instructions,
             output,
             localisation: self.localisation,
-            scopes: vec![self.scope],
+            scopes: vec![Scope {
+                variables: self.variables.params,
+                slots: Default::default(),
+            }],
         };
         interpreter.run().await?;
         Ok(())

hornbeam_interpreter/src/lib.rs

@@ -31,6 +31,9 @@ pub enum InterpreterError<LE: Debug + Clone, OE: Debug> {
 
     #[error("failed to process parsed template: ")]
     AstToIrError(#[from] AstToIrError),
+
+    #[error("error finding templates to load: {0}")]
+    TemplateFindError(String),
 }
 
-pub use interface::{LoadedTemplates, LocalisationSystem, OutputSystem, PreparedTemplate};
+pub use interface::{LoadedTemplates, LocalisationSystem, OutputSystem, Params, PreparedTemplate};

hornbeam_interpreter/src/localisation/fluent.rs

@@ -10,6 +10,9 @@ use fluent_templates::loader::langid;
 use fluent_templates::{ArcLoader, LanguageIdentifier, Loader};
 use std::borrow::Cow;
 use std::collections::{BTreeMap, HashMap};
+use std::io;
+use std::io::ErrorKind;
+use std::path::Path;
 
 use thiserror::Error;
 
@@ -37,7 +40,20 @@ pub struct FluentLocalisationSystem {
     pub fluent: ArcLoader,
 }
 
-impl FluentLocalisationSystem {}
+impl FluentLocalisationSystem {
+    pub fn new(
+        base_dir: &Path,
+        fallback_lang_code: &str,
+    ) -> Result<FluentLocalisationSystem, io::Error> {
+        let fallback_lang = LanguageIdentifier::from_bytes(fallback_lang_code.as_bytes())
+            .map_err(|e| io::Error::new(ErrorKind::InvalidInput, e))?;
+        let arc_loader = ArcLoader::builder(base_dir, fallback_lang)
+            .build()
+            .map_err(|e| io::Error::new(ErrorKind::InvalidInput, format!("{e:?}")))?;
+
+        Ok(FluentLocalisationSystem { fluent: arc_loader })
+    }
+}
 
 #[derive(Error, Clone, Debug)]
 pub enum FluentLocalisationError {

hornbeam_ir/src/ast_to_ir.rs

@@ -7,6 +7,13 @@ use std::collections::BTreeMap;
 use std::ops::Deref;
 use thiserror::Error;
 
+// TODO use the void tags
+/// List of all void (self-closing) HTML tags.
+const VOID_TAGS: &'static [&'static str] = &[
+    "area", "base", "br", "col", "embed", "hr", "img", "input", "link", "menuitem", "meta",
+    "param", "source", "track", "wbr",
+];
+
 #[derive(Error, Debug, Clone)]
 pub enum AstToIrError {
     #[error("semantic error: {message} @ {location:?}\n{description}")]