Merge pull request #313 from schungx/master
Revise packages terminology.
This commit is contained in:
Stephen Chung
GitHub
commit
a2220e7f23
@ -6,7 +6,7 @@ members = [
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[package]
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name = "rhai"
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version = "0.19.8"
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version = "0.19.9"
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edition = "2018"
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authors = ["Jonathan Turner", "Lukáš Hozda", "Stephen Chung", "jhwgh1968"]
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description = "Embedded scripting for Rust"
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27
RELEASES.md
27
RELEASES.md
@ -1,6 +1,20 @@
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Rhai Release Notes
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==================
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Version 0.19.9
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==============
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This version removes the confusing differences between _packages_ and _modules_
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by unifying the terminology and API under the global umbrella of _modules_.
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Breaking changes
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----------------
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* `Engine::load_package` is renamed `Engine::register_global_module` and now must explicitly pass a shared [`Module`].
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* `Engine::register_module` is renamed `Engine::register_static_module` and now must explicitly pass a shared [`Module`].
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* `Package::get` is renamed `Package::as_shared_module`.
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Version 0.19.8
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==============
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@ -14,13 +28,15 @@ A new API, `Engine::gen_fn_metadata_to_json` and `Engine::gen_fn_metadata_with_a
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paired with the new `metadata` feature, exports the full list of functions metadata
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(including those in an `AST`) as a JSON document.
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There are also a sizable number of bug fixes.
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Bug fixes
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---------
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* Unary prefix operators `-`, `+` and `!` now bind correctly when applied to an expression. Previously, `-x.len` is parsed as `(-x).len` which is obviously counter-intuitive.
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* Indexing of namespace-qualified variables now work properly, such as `path::to::var[x]`.
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* Constants are no longer propagated by the optimizer if shadowed by a non-constant variable.
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* Constants passed as the `this` parameter to Rhai functions now throws an error if assigned to.
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* A constant passed as the `this` parameter to Rhai functions now throws an error if assigned to.
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* Generic type parameter of `Engine::register_iterator` is `IntoIterator` instead of `Iterator`.
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* Fixes parsing of block comments ending with `**/` or inner blocks starting with `//*`.
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@ -37,8 +53,8 @@ New features
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* `AST::iter_functions` now returns `ScriptFnMetadata` which includes, among others, _doc-comments_ for functions prefixed by `///` or `/**`.
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* _Doc-comments_ can be enabled/disabled with the new `Engine::set_doc_comments` method.
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* A new feature `metadata` is added that pulls in `serde_json` and enables `Engine::gen_fn_metadata_to_json` and ``Engine::gen_fn_metadata_with_ast_to_json` which exports the full list of functions metadata (including those inside an `AST`) in JSON format.
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* `Engine::on_debug` provides two additional parameters: `source: Option<&str>` and `pos: Position`.
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* A new feature `metadata` is added that pulls in `serde_json` and enables `Engine::gen_fn_metadata_to_json` and `Engine::gen_fn_metadata_with_ast_to_json` which exports the full list of functions metadata (including those inside an `AST`) in JSON format.
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* `Engine::on_debug` provides two additional parameters: `source: Option<&str>` and `pos: Position`, containing the current source (if any) and position of the `debug` statement.
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* `NativeCallContext` and `EvalContext` both expose `source()` which returns the current source, if any.
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Enhancements
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@ -46,7 +62,6 @@ Enhancements
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* A functions lookup cache is added to make function call resolution faster.
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* Capturing a constant variable in a closure is now supported, with no cloning.
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* Provides position info for `debug` statements.
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* A _look-ahead_ symbol is provided to custom syntax parsers, which can be used to parse variable-length symbol streams.
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@ -98,7 +113,7 @@ New features
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* New `switch` statement.
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* New `do ... while` and `do ... until` statements.
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* New `Engine::gen_fn_signatures`, `Module::gen_fn_signatures` and `PackagesCollection::gen_fn_signatures` to generate a list of signatures for functions registered.
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* New `Engine::register_module` to register a module as a sub-module in the global namespace.
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* New `Engine::register_static_module` to register a module as a sub-module in the global namespace.
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* New `set_exported_global_fn!` macro to register a plugin function and expose it to the global namespace.
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* `Module::set_fn_XXX_mut` can expose a module function to the global namespace. This is convenient when registering an API for a custom type.
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* `Module::set_getter_fn`, `Module::set_setter_fn`, `Module::set_indexer_get_fn`, `Module::set_indexer_set_fn` all expose the function to the global namespace by default. This is convenient when registering an API for a custom type.
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@ -365,7 +380,7 @@ Breaking changes
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* `Engine::register_raw_fn_XXX` API shortcuts are removed.
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* `PackagesCollection::get_fn`, `PackagesCollection::contains_fn`, `Module::get_fn` and `Module::contains_fn` now take an additional `public_only` parameter indicating whether only public functions are accepted.
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* The iterator returned by `Scope::iter` now contains a clone of the `Dynamic` value (unshared).
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* `Engine::load_package` takes any type that is `Into<PackageLibrary>`.
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* `Engine::register_global_module` takes any type that is `Into<PackageLibrary>`.
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* Error in `Engine::register_custom_syntax` is no longer `Box`-ed.
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Housekeeping
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@ -23,7 +23,7 @@ fn bench_engine_new_raw_core(bench: &mut Bencher) {
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bench.iter(|| {
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let mut engine = Engine::new_raw();
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engine.load_package(package.get());
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engine.register_global_module(package.as_shared_module());
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});
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}
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@ -20,7 +20,7 @@ fn bench_eval_module(bench: &mut Bencher) {
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let module = Module::eval_ast_as_new(Default::default(), &ast, &engine).unwrap();
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engine.register_module("testing", module);
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engine.register_static_module("testing", module.into());
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let ast = engine
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.compile(
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@ -160,7 +160,7 @@ pub fn export_fn(
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///
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/// let module = exported_module!(my_plugin_module);
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///
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/// engine.load_package(module);
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/// engine.register_global_module(module.into());
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///
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/// assert_eq!(engine.eval::<i64>("foo(bar())")?, 42);
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/// # Ok(())
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@ -203,7 +203,7 @@ pub fn export_module(
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///
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/// let module = exported_module!(my_plugin_module);
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///
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/// engine.load_package(module);
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/// engine.register_global_module(module.into());
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///
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/// assert_eq!(engine.eval::<i64>("foo(bar())")?, 42);
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/// # Ok(())
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@ -250,7 +250,7 @@ pub fn exported_module(module_path: proc_macro::TokenStream) -> proc_macro::Toke
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/// let mut module = Module::new();
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/// combine_with_exported_module!(&mut module, "my_plugin_module_ID", my_plugin_module);
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///
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/// engine.load_package(module);
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/// engine.register_global_module(module.into());
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///
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/// assert_eq!(engine.eval::<i64>("foo(bar())")?, 42);
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/// # Ok(())
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@ -324,7 +324,7 @@ pub fn register_exported_fn(args: proc_macro::TokenStream) -> proc_macro::TokenS
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/// let mut module = Module::new();
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/// set_exported_fn!(module, "func", my_plugin_function);
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///
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/// engine.load_package(module);
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/// engine.register_global_module(module.into());
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///
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/// assert_eq!(engine.eval::<i64>("func(21)")?, 42);
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/// # Ok(())
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@ -366,7 +366,7 @@ pub fn set_exported_fn(args: proc_macro::TokenStream) -> proc_macro::TokenStream
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/// let mut module = Module::new();
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/// set_exported_global_fn!(module, "func", my_plugin_function);
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///
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/// engine.register_module("test", module);
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/// engine.register_static_module("test", module.into());
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///
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/// assert_eq!(engine.eval::<i64>("func(21)")?, 42);
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/// # Ok(())
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@ -257,7 +257,7 @@ mod multiple_fn_rename {
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fn multiple_fn_rename_test() -> Result<(), Box<EvalAltResult>> {
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let mut engine = Engine::new();
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let m = rhai::exported_module!(crate::multiple_fn_rename::my_adds);
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engine.load_package(m);
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engine.register_global_module(m.into());
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let output_array = engine.eval::<Array>(
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r#"
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@ -41,18 +41,17 @@ The Rhai Scripting Language
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2. [Indexers](rust/indexers.md)
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3. [Disable Custom Types](rust/disable-custom.md)
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4. [Printing Custom Types](rust/print-custom.md)
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9. [Packages](rust/packages/index.md)
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1. [Built-in Packages](rust/packages/builtin.md)
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2. [Load a Plugin Module as a Package](rust/packages/plugin.md)
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3. [Manually Create a Custom Package](rust/packages/create.md)
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10. [Modules](rust/modules/index.md)
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9. [Modules](rust/modules/index.md)
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1. [Create from Rust](rust/modules/create.md)
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2. [Create from AST](rust/modules/ast.md)
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3. [Module Resolvers](rust/modules/resolvers.md)
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1. [Custom Implementation](rust/modules/imp-resolver.md)
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11. [Plugins](plugins/index.md)
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1. [Custom Module Resolvers](rust/modules/imp-resolver.md)
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10. [Plugins](plugins/index.md)
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1. [Export a Rust Module](plugins/module.md)
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2. [Export a Rust Function](plugins/function.md)
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11. [Packages](rust/packages/index.md)
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1. [Built-in Packages](rust/packages/builtin.md)
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2. [Custom Packages](rust/packages/create.md)
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5. [Rhai Language Reference](language/index.md)
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1. [Comments](language/comments.md)
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1. [Doc-Comments](language/doc-comments.md)
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@ -128,18 +127,18 @@ The Rhai Scripting Language
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7. [One Engine Instance Per Call](patterns/parallel.md)
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8. [Scriptable Event Handler with State](patterns/events.md)
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9. [Dynamic Constants Provider](patterns/dynamic-const.md)
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9. [Advanced Topics](advanced.md)
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1. [Capture Scope for Function Call](language/fn-capture.md)
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2. [Low-Level API](rust/register-raw.md)
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3. [Variable Resolver](engine/var.md)
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4. [Use as DSL](engine/dsl.md)
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9. [Advanced Topics](advanced.md)
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10. [Capture Scope for Function Call](language/fn-capture.md)
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11. [Low-Level API](rust/register-raw.md)
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12. [Variable Resolver](engine/var.md)
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13. [Use as DSL](engine/dsl.md)
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1. [Disable Keywords and/or Operators](engine/disable.md)
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2. [Custom Operators](engine/custom-op.md)
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3. [Extending with Custom Syntax](engine/custom-syntax.md)
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5. [Multiple Instantiation](patterns/multiple.md)
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6. [Functions Metadata](engine/metadata/index.md)
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1. [Generate Function Signatures](engine/metadata/gen_fn_sig.md)
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2. [Export Metadata to JSON](engine/metadata/export_to_json.md)
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14. [Multiple Instantiation](patterns/multiple.md)
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15. [Functions Metadata](engine/metadata/index.md)
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4. [Generate Function Signatures](engine/metadata/gen_fn_sig.md)
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5. [Export Metadata to JSON](engine/metadata/export_to_json.md)
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10. [Appendix](appendix/index.md)
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1. [Keywords](appendix/keywords.md)
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2. [Operators and Symbols](appendix/operators.md)
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@ -1,5 +1,5 @@
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{
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"version": "0.19.8",
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"version": "0.19.9",
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"repoHome": "https://github.com/jonathandturner/rhai/blob/master",
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"repoTree": "https://github.com/jonathandturner/rhai/tree/master",
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"rootUrl": "",
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@ -4,24 +4,25 @@ Export Functions Metadata to JSON
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{{#include ../../links.md}}
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`Engine::gen_fn_metadata_to_json`
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--------------------------------
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`Engine::gen_fn_metadata_to_json`<br/>`Engine::gen_fn_metadata_with_ast_to_json`
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------------------------------------------------------------------------------
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As part of a _reflections_ API, `Engine::gen_fn_metadata_to_json` exports the full list
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of [functions metadata] in JSON format.
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As part of a _reflections_ API, `Engine::gen_fn_metadata_to_json` and the corresponding
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`Engine::gen_fn_metadata_with_ast_to_json` export the full list of [functions metadata]
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in JSON format.
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The [`metadata`] feature must be used to turn on this method, which requires
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The [`metadata`] feature must be used to turn on this API, which requires
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the [`serde_json`](https://crates.io/crates/serde_json) crate.
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### Sources
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Functions from the following sources are included:
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1) Script-defined functions in an [`AST`], if provided
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1) Script-defined functions in an [`AST`] (for `Engine::gen_fn_metadata_with_ast_to_json`)
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2) Native Rust functions registered into the global namespace via the `Engine::register_XXX` API
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3) _Public_ (i.e. non-[`private`]) functions (native Rust or Rhai scripted) in global sub-modules registered via
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[`Engine::register_module`]({{rootUrl}}/rust/modules/create.md)
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4) Native Rust functions in registered [packages] (optional)
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3) _Public_ (i.e. non-[`private`]) functions (native Rust or Rhai scripted) in static modules
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registered via `Engine::register_static_module`
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4) Native Rust functions in global modules registered via `Engine::register_global_module` (optional)
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Notice that if a function has been [overloaded][function overloading], only the overriding function's
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metadata is included.
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@ -17,9 +17,9 @@ As part of a _reflections_ API, `Engine::gen_fn_signatures` returns a list of fu
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Functions from the following sources are included, in order:
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1) Native Rust functions registered into the global namespace via the `Engine::register_XXX` API
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2) _Public_ (i.e. non-[`private`]) functions (native Rust or Rhai scripted) in global sub-modules registered via
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[`Engine::register_module`]({{rootUrl}}/rust/modules/create.md)
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3) Native Rust functions in registered [packages] (optional)
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2) _Public_ (i.e. non-[`private`]) functions (native Rust or Rhai scripted) in global sub-modules
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registered via `Engine::register_static_module`.
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3) Native Rust functions in global modules registered via `Engine::register_global_module` (optional)
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Functions Metadata
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@ -1,6 +1,8 @@
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Doc-Comments
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============
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{{#include ../links.md}}
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Similar to Rust, comments starting with `///` (three slashes) or `/**` (two asterisks) are
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_doc-comments_.
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@ -56,7 +58,6 @@ This is consistent with popular comment block styles for C-like languages.
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```
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Using Doc-Comments
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------------------
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@ -15,18 +15,20 @@ allow combining all functions in one [`AST`] into another, forming a new, unifie
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In general, there are two types of _namespaces_ where functions are looked up:
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| Namespace | How Many | Source | Lookup method | Sub-modules? | Variables? |
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| --------- | :------: | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------- | :----------: | :--------: |
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| Global | One | 1) [`AST`] being evaluated<br/>2) `Engine::register_XXX` API<br/>3) [packages] loaded<br/>4) functions in [modules] loaded via `Engine::register_module` and marked _global_ | simple function name | ignored | ignored |
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| Module | Many | [`Module`] | namespace-qualified function name | yes | yes |
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| Namespace | How Many | Source | Lookup | Sub-modules? | Variables? |
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| --------- | :------: | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------ | :----------: | :--------: |
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| Global | One | 1) [`AST`] being evaluated<br/>2) `Engine::register_XXX` API<br/>3) global [modules] registered via `Engine::register_global_module`<br/>4) functions in static [modules] registered via `Engine::register_static_module` and marked _global_ | simple name | ignored | ignored |
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| Module | Many | 1) [Module] registered via `Engine::register_static_module`<br/>2) [Module] loaded via [`import`] statement | namespace-qualified name | yes | yes |
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Module Namespace
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----------------
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Module Namespaces
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-----------------
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There can be multiple module namespaces at any time during a script evaluation, loaded via the
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There can be multiple module namespaces at any time during a script evaluation, usually loaded via the
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[`import`] statement.
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_Static_ module namespaces can also be registered into an [`Engine`] via `Engine::register_static_module`.
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Functions and variables in module namespaces are isolated and encapsulated within their own environments.
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They must be called or accessed in a _namespace-qualified_ manner.
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@ -52,10 +54,11 @@ There is one _global_ namespace for every [`Engine`], which includes (in the fol
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* All native Rust functions and iterators registered via the `Engine::register_XXX` API.
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* All functions and iterators defined in [packages] that are loaded into the [`Engine`].
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* All functions and iterators defined in global [modules] that are registered into the [`Engine`] via
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`Engine::register_global_module`.
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* Functions defined in [modules] loaded via `Engine::register_module` that are specifically marked
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for exposure to the global namespace (e.g. via the `#[rhai(global)]` attribute in a [plugin module]).
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* Functions defined in [modules] registered via `Engine::register_static_module` that are specifically
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marked for exposure to the global namespace (e.g. via the `#[rhai(global)]` attribute in a [plugin module]).
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Anywhere in a Rhai script, when a function call is made, the function is searched within the
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global namespace, in the above search order.
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@ -172,7 +172,7 @@ Functions from the following sources are returned, in order:
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1) Encapsulated script environment (e.g. when loading a [module] from a script file),
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2) Current script,
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3) [Modules] imported via the [`import`] statement (latest imports first),
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4) [Modules] added via [`Engine::register_module`]({{rootUrl}}/rust/modules/create.md) (latest registrations first)
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4) [Modules] added via [`Engine::register_static_module`]({{rootUrl}}/rust/modules/create.md) (latest registrations first)
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The return value is an [array] of [object maps] (so `get_fn_metadata_list` is not available under
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[`no_index`] or [`no_object`]), containing the following fields:
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@ -4,7 +4,7 @@ Export Variables, Functions and Sub-Modules in Module
|
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{{#include ../../links.md}}
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The easiest way to expose a package of functions as a self-contained [module] is to do it via a Rhai script itself.
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The easiest way to expose a collection of functions as a self-contained [module] is to do it via a Rhai script itself.
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See the section on [_Creating a Module from AST_]({{rootUrl}}/rust/modules/ast.md) for more details.
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@ -116,7 +116,7 @@ let mut engine = Engine::new();
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// Load the module as the module namespace "MyEnum"
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engine
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.register_type_with_name::<MyEnum>("MyEnum")
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.register_module("MyEnum", exported_module!(MyEnumModule));
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.register_static_module("MyEnum", exported_module!(MyEnumModule).into());
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```
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With this API in place, working with enums feels almost the same as in Rust:
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@ -100,7 +100,7 @@ impl Handler {
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// Register custom types and API's
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engine
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.register_type_with_name::<SomeType>("SomeType")
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.load_package(exported_module!(SomeTypeAPI));
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.register_global_module(exported_module!(SomeTypeAPI));
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// Create a custom 'Scope' to hold state
|
||||
let mut scope = Scope::new();
|
||||
|
||||
@ -20,7 +20,8 @@ Usage Scenario
|
||||
Key Concepts
|
||||
------------
|
||||
|
||||
* Create a single instance of each standard [package] required. To duplicate `Engine::new`, create a [`StandardPackage`]({{rootUrl}}/rust/packages/builtin.md).
|
||||
* Create a single instance of each standard [package] required.
|
||||
To duplicate `Engine::new`, create a [`StandardPackage`]({{rootUrl}}/rust/packages/builtin.md).
|
||||
|
||||
* Gather up all common custom functions into a [custom package].
|
||||
|
||||
@ -29,10 +30,14 @@ Key Concepts
|
||||
* Always use `Engine::new_raw` to create a [raw `Engine`], instead of `Engine::new` which is _much_ more expensive.
|
||||
A [raw `Engine`] is _extremely_ cheap to create.
|
||||
|
||||
Loading the [`StandardPackage`]({{rootUrl}}/rust/packages/builtin.md) into a [raw `Engine`] via `Engine::load_package` is essentially the same as `Engine::new`.
|
||||
But because packages are shared, loading an existing package is _much cheaper_ than registering all the functions one by one.
|
||||
Registering the [`StandardPackage`]({{rootUrl}}/rust/packages/builtin.md) into a [raw `Engine`] via
|
||||
`Engine::register_global_module` is essentially the same as `Engine::new`.
|
||||
|
||||
However, because packages are shared, using existing package is _much cheaper_ than
|
||||
registering all the functions one by one.
|
||||
|
||||
* Load the required packages into the [raw `Engine`] via `Engine::load_package`, using `Package::get` to obtain a shared copy.
|
||||
* Register the required packages with the [raw `Engine`] via `Engine::register_global_module`,
|
||||
using `Package::as_shared_module` to obtain a shared [module].
|
||||
|
||||
|
||||
Examples
|
||||
@ -46,17 +51,17 @@ let std_pkg = StandardPackage::new();
|
||||
let custom_pkg = MyCustomPackage::new();
|
||||
|
||||
let make_call = |x: i64| -> Result<(), Box<EvalAltResult>> {
|
||||
// Create a raw Engine - extremely cheap.
|
||||
// Create a raw Engine - extremely cheap
|
||||
let mut engine = Engine::new_raw();
|
||||
|
||||
// Load packages - cheap.
|
||||
engine.load_package(std_pkg.get());
|
||||
engine.load_package(custom_pkg.get());
|
||||
// Register packages as global modules - cheap
|
||||
engine.register_global_module(std_pkg.as_shared_module());
|
||||
engine.register_global_module(custom_pkg.as_shared_module());
|
||||
|
||||
// Create custom scope - cheap.
|
||||
// Create custom scope - cheap
|
||||
let mut scope = Scope::new();
|
||||
|
||||
// Push variable into scope - relatively cheap.
|
||||
// Push variable into scope - relatively cheap
|
||||
scope.push("x", x);
|
||||
|
||||
// Evaluate script.
|
||||
|
||||
@ -146,7 +146,7 @@ pub mod bunny_api {
|
||||
}
|
||||
}
|
||||
|
||||
engine.load_package(exported_module!(bunny_api));
|
||||
engine.register_global_module(exported_module!(bunny_api).into());
|
||||
```
|
||||
|
||||
### Push Constant Command Object into Custom Scope
|
||||
|
||||
@ -28,11 +28,11 @@ and is custom fit to each exported item.
|
||||
All `pub` functions become registered functions, all `pub` constants become [module] constant variables,
|
||||
and all sub-modules become Rhai sub-modules.
|
||||
|
||||
This Rust module can then either be loaded into an [`Engine`] as a normal [module] or
|
||||
registered as a [package]. This is done by using the `exported_module!` macro.
|
||||
This Rust module can then be registered into an [`Engine`] as a normal [module].
|
||||
This is done via the `exported_module!` macro.
|
||||
|
||||
The macro `combine_with_exported_module!` can also be used to _combine_ all the functions
|
||||
and variables into an existing module, _flattening_ the namespace - i.e. all sub-modules
|
||||
The macro `combine_with_exported_module!` can be used to _combine_ all the functions
|
||||
and variables into an existing [module], _flattening_ the namespace - i.e. all sub-modules
|
||||
are eliminated and their contents promoted to the top level. This is typical for
|
||||
developing [custom packages].
|
||||
|
||||
@ -42,7 +42,7 @@ use rhai::plugin::*; // a "prelude" import for macros
|
||||
#[export_module]
|
||||
mod my_module {
|
||||
// This constant will be registered as the constant variable 'MY_NUMBER'.
|
||||
// Ignored when loaded as a package.
|
||||
// Ignored when registered as a global module.
|
||||
pub const MY_NUMBER: i64 = 42;
|
||||
|
||||
// This function will be registered as 'greet'.
|
||||
@ -64,9 +64,9 @@ mod my_module {
|
||||
42
|
||||
}
|
||||
|
||||
// Sub-modules are ignored when the Module is loaded as a package.
|
||||
// Sub-modules are ignored when the module is registered globally.
|
||||
pub mod my_sub_module {
|
||||
// This function is ignored when loaded as a package.
|
||||
// This function is ignored when registered globally.
|
||||
// Otherwise it is a valid registered function under a sub-module.
|
||||
pub fn get_info() -> String {
|
||||
"hello".to_string()
|
||||
@ -78,7 +78,7 @@ mod my_module {
|
||||
// This is currently a limitation of the plugin procedural macros.
|
||||
#[cfg(feature = "advanced_functions")]
|
||||
pub mod advanced {
|
||||
// This function is ignored when loaded as a package.
|
||||
// This function is ignored when registered globally.
|
||||
// Otherwise it is a valid registered function under a sub-module
|
||||
// which only exists when the 'advanced_functions' feature is used.
|
||||
pub fn advanced_calc(input: i64) -> i64 {
|
||||
@ -88,10 +88,10 @@ mod my_module {
|
||||
}
|
||||
```
|
||||
|
||||
### Use `Engine::load_package`
|
||||
### Use `Engine::register_global_module`
|
||||
|
||||
The simplest way to load this into an [`Engine`] is to first use the `exported_module!` macro
|
||||
to turn it into a normal Rhai [module], then use the `Engine::load_package` method on it:
|
||||
The simplest way to register this into an [`Engine`] is to first use the `exported_module!` macro
|
||||
to turn it into a normal Rhai [module], then use the `Engine::register_global_module` method on it:
|
||||
|
||||
```rust
|
||||
fn main() {
|
||||
@ -100,13 +100,13 @@ fn main() {
|
||||
// The macro call creates a Rhai module from the plugin module.
|
||||
let module = exported_module!(my_module);
|
||||
|
||||
// A module can simply be loaded, registering all public functions.
|
||||
engine.load_package(module);
|
||||
// A module can simply be registered into the global namespace.
|
||||
engine.register_global_module(module.into());
|
||||
}
|
||||
```
|
||||
|
||||
The functions contained within the module definition (i.e. `greet`, `get_num` and `increment`)
|
||||
are automatically registered into the [`Engine`] when `Engine::load_package` is called.
|
||||
are automatically registered into the [`Engine`] when `Engine::register_global_module` is called.
|
||||
|
||||
```rust
|
||||
let x = greet("world");
|
||||
@ -123,12 +123,14 @@ x == 43;
|
||||
```
|
||||
|
||||
Notice that, when using a [module] as a [package], only functions registered at the _top level_
|
||||
can be accessed. Variables as well as sub-modules are ignored.
|
||||
can be accessed.
|
||||
|
||||
### Use `Engine::register_module`
|
||||
Variables as well as sub-modules are **ignored**.
|
||||
|
||||
Another simple way to load this into an [`Engine`] is, again, to use the `exported_module!` macro
|
||||
to turn it into a normal Rhai [module], then use the `Engine::register_module` method on it:
|
||||
### Use `Engine::register_static_module`
|
||||
|
||||
Another simple way to register this into an [`Engine`] is, again, to use the `exported_module!` macro
|
||||
to turn it into a normal Rhai [module], then use the `Engine::register_static_module` method on it:
|
||||
|
||||
```rust
|
||||
fn main() {
|
||||
@ -137,13 +139,13 @@ fn main() {
|
||||
// The macro call creates a Rhai module from the plugin module.
|
||||
let module = exported_module!(my_module);
|
||||
|
||||
// A module can simply be loaded as a globally-available module.
|
||||
engine.register_module("service", module);
|
||||
// A module can simply be registered as a static module namespace.
|
||||
engine.register_static_module("service", module.into());
|
||||
}
|
||||
```
|
||||
|
||||
The functions contained within the module definition (i.e. `greet`, `get_num` and `increment`),
|
||||
plus the constant `MY_NUMBER`, are automatically loaded under the module namespace `service`:
|
||||
plus the constant `MY_NUMBER`, are automatically registered under the module namespace `service`:
|
||||
|
||||
```rust
|
||||
let x = service::greet("world");
|
||||
@ -178,14 +180,14 @@ x.increment();
|
||||
x == 43;
|
||||
```
|
||||
|
||||
### Use as loadable `Module`
|
||||
### Use Dynamically
|
||||
|
||||
Using this directly as a dynamically-loadable Rhai [module] is almost the same, except that a
|
||||
[module resolver] must be used to serve the module, and the module is loaded via `import` statements.
|
||||
|
||||
See the [module] section for more information.
|
||||
|
||||
### Use as custom package
|
||||
### Combine into Custom Package
|
||||
|
||||
Finally the plugin module can also be used to develop a [custom package],
|
||||
using `combine_with_exported_module!`:
|
||||
|
||||
@ -19,14 +19,16 @@ Manually creating a [module] is possible via the `Module` API.
|
||||
For the complete `Module` API, refer to the [documentation](https://docs.rs/rhai/{{version}}/rhai/struct.Module.html) online.
|
||||
|
||||
|
||||
Make the `Module` Available to the `Engine`
|
||||
------------------------------------------
|
||||
Use Case 1 - Make the `Module` Globally Available
|
||||
------------------------------------------------
|
||||
|
||||
`Engine::load_package` supports loading a [module] as a [package].
|
||||
`Engine::register_global_module` registers a shared [module] into the _global_ namespace.
|
||||
|
||||
Since it acts as a [package], all functions will be registered into the _global_ namespace
|
||||
and can be accessed without _namespace qualifiers_. This is by far the easiest way to expose
|
||||
a module's functionalities to Rhai.
|
||||
All [functions] and [type iterators] can be accessed without _namespace qualifiers_.
|
||||
|
||||
Variables and sub-modules are **ignored**.
|
||||
|
||||
This is by far the easiest way to expose a module's functionalities to Rhai.
|
||||
|
||||
```rust
|
||||
use rhai::{Engine, Module};
|
||||
@ -40,18 +42,18 @@ let hash = module.set_fn_1("inc", |x: i64| Ok(x+1));
|
||||
// 'set_fn_XXX' by default does not set function metadata.
|
||||
module.update_fn_metadata(hash, ["x: i64", "i64"]);
|
||||
|
||||
// Load the module into the Engine as a new package.
|
||||
// Register the module into the global namespace of the Engine.
|
||||
let mut engine = Engine::new();
|
||||
engine.load_package(module);
|
||||
engine.register_global_module(module.into());
|
||||
|
||||
engine.eval::<i64>("inc(41)")? == 42; // no need to import module
|
||||
```
|
||||
|
||||
|
||||
Make the `Module` a Global Module
|
||||
------------------------------------
|
||||
Use Case 2 - Make the `Module` a Static Module
|
||||
---------------------------------------------
|
||||
|
||||
`Engine::register_module` loads a [module] and makes it available globally under a specific namespace.
|
||||
`Engine::register_static_module` registers a [module] and under a specific module namespace.
|
||||
|
||||
```rust
|
||||
use rhai::{Engine, Module};
|
||||
@ -65,17 +67,20 @@ let hash = module.set_fn_1("inc", |x: i64| Ok(x+1));
|
||||
// 'set_fn_XXX' by default does not set function metadata.
|
||||
module.update_fn_metadata(hash, ["x: i64", "i64"]);
|
||||
|
||||
// Load the module into the Engine as a sub-module named 'calc'
|
||||
// Register the module into the Engine as a static module namespace 'calc'
|
||||
let mut engine = Engine::new();
|
||||
engine.register_module("calc", module);
|
||||
engine.register_static_module("calc", module.into());
|
||||
|
||||
engine.eval::<i64>("calc::inc(41)")? == 42; // refer to the 'Calc' module
|
||||
```
|
||||
|
||||
`Module::set_fn_XXX_mut` can expose functions (usually _methods_) in the module
|
||||
to the _global_ namespace, so [getters/setters] and [indexers] for [custom types] can work as expected.
|
||||
### Expose Functions to the Global Namespace
|
||||
|
||||
[Type iterators], because of their special nature, are always exposed to the _global_ namespace.
|
||||
`Module::set_fn_mut` and `Module::set_fn_XXX_mut` can optionally expose functions (usually _methods_)
|
||||
in the module to the _global_ namespace, so [getters/setters] and [indexers] for [custom types]
|
||||
can work as expected.
|
||||
|
||||
[Type iterators], because of their special nature, are _always_ exposed to the _global_ namespace.
|
||||
|
||||
```rust
|
||||
use rhai::{Engine, Module, FnNamespace};
|
||||
@ -89,17 +94,17 @@ let hash = module.set_fn_1_mut("inc", FnNamespace::Global, |x: &mut i64| Ok(x+1)
|
||||
// 'set_fn_XXX' by default does not set function metadata.
|
||||
module.update_fn_metadata(hash, ["x: &mut i64", "i64"]);
|
||||
|
||||
// Load the module into the Engine as a sub-module named 'calc'
|
||||
// Register the module into the Engine as a static module namespace 'calc'
|
||||
let mut engine = Engine::new();
|
||||
engine.register_module("calc", module);
|
||||
engine.register_static_module("calc", module.into());
|
||||
|
||||
// The method 'inc' works as expected because it is exposed to the global namespace
|
||||
engine.eval::<i64>("let x = 41; x.inc()")? == 42;
|
||||
```
|
||||
|
||||
|
||||
Make the `Module` Dynamically Loadable
|
||||
-------------------------------------
|
||||
Use Case 3 - Make the `Module` Dynamically Loadable
|
||||
--------------------------------------------------
|
||||
|
||||
In order to dynamically load a custom module, there must be a [module resolver] which serves
|
||||
the module when loaded via `import` statements.
|
||||
|
||||
@ -3,12 +3,27 @@ Modules
|
||||
|
||||
{{#include ../../links.md}}
|
||||
|
||||
Rhai allows organizing code (functions, both Rust-based or script-based, and variables) into _modules_.
|
||||
Modules can be disabled via the [`no_module`] feature.
|
||||
Rhai allows organizing functionalities (functions, both Rust-based or script-based, and variables)
|
||||
into independent _modules_. Modules can be disabled via the [`no_module`] feature.
|
||||
|
||||
A module is of the type `Module` and holds a collection of functions, variables, [type iterators] and sub-modules.
|
||||
It may be created entirely from Rust functions, or it may encapsulate a Rhai script together with the functions
|
||||
and variables defined by that script.
|
||||
A module is of the type `Module` and holds a collection of functions, variables,
|
||||
[type iterators] and sub-modules.
|
||||
|
||||
It may be created entirely from Rust functions, or it may encapsulate a Rhai script together
|
||||
with the functions and variables defined by that script.
|
||||
|
||||
Other scripts can then load this module and use the functions and variables exported
|
||||
as if they were defined inside the same script.
|
||||
|
||||
Alternatively, modules can be registered directly into an [`Engine`] and made available
|
||||
to scripts either globally or under individual static module [_namespaces_][function namespaces].
|
||||
|
||||
|
||||
Usage Patterns
|
||||
--------------
|
||||
|
||||
| Usage | API | Lookup | Sub-modules? | Variables? |
|
||||
| -------------- | :-------------------------------: | :----------------------: | :----------: | :--------: |
|
||||
| Global module | `Engine:: register_global_module` | simple name | ignored | ignored |
|
||||
| Static module | `Engine:: register_static_module` | namespace-qualified name | yes | yes |
|
||||
| Dynamic module | [`import`] statement | namespace-qualified name | yes | yes |
|
||||
|
||||
@ -23,10 +23,10 @@ Built-In Packages
|
||||
| `StandardPackage` | standard library (default for `Engine::new`) | no | yes |
|
||||
|
||||
|
||||
Load the `CorePackage`
|
||||
---------------------
|
||||
`CorePackage`
|
||||
-------------
|
||||
|
||||
If only minimal functionalities is required, load the `CorePackage` instead:
|
||||
If only minimal functionalities are required, register the `CorePackage` instead:
|
||||
|
||||
```rust
|
||||
use rhai::Engine;
|
||||
@ -35,5 +35,6 @@ use rhai::packages::{Package, CorePackage};
|
||||
let mut engine = Engine::new_raw();
|
||||
let package = CorePackage::new();
|
||||
|
||||
engine.load_package(package.get());
|
||||
// Register the package into the 'Engine' by converting it into a shared module.
|
||||
engine.register_global_module(package.as_shared_module());
|
||||
```
|
||||
|
||||
@ -1,35 +1,33 @@
|
||||
Manually Create a Custom Package
|
||||
===============================
|
||||
Create a Custom Package
|
||||
=======================
|
||||
|
||||
{{#include ../../links.md}}
|
||||
|
||||
Sometimes specific functionalities are needed, so custom packages can be created.
|
||||
|
||||
A custom package is a convenient means to gather up a number of functions for later use.
|
||||
An [`Engine`] only needs to `Engine::load_package` the custom package once to gain access
|
||||
to the entire set of functions within.
|
||||
The macro `def_package!` can be used to create a custom [package].
|
||||
|
||||
Loading a package into an [`Engine`] is functionally equivalent to calling `Engine::register_fn` etc.
|
||||
on _each_ of the functions inside the package. But because packages are _shared_, loading an existing
|
||||
package is _much_ cheaper than registering all the functions one by one.
|
||||
|
||||
The macro `rhai::def_package!` can be used to create a new custom package.
|
||||
A custom package can aggregate many other packages into a single self-contained unit.
|
||||
More functions can be added on top of others.
|
||||
|
||||
|
||||
Macro Parameters
|
||||
---------------
|
||||
`def_package!`
|
||||
--------------
|
||||
|
||||
`def_package!(root:package_name:description, variable, block)`
|
||||
> `def_package!(root:package_name:description, variable, block)`
|
||||
|
||||
* `root` - root namespace, usually `"rhai"`.
|
||||
where:
|
||||
|
||||
* `package_name` - name of the package, usually ending in `Package`.
|
||||
| Parameter | Description |
|
||||
| :------------: | ----------------------------------------------------------------------------------------------- |
|
||||
| `root` | root namespace, usually `rhai` |
|
||||
| `package_name` | name of the package, usually ending in `...Package` |
|
||||
| `description` | doc-comment for the package |
|
||||
| `variable` | a variable name holding a reference to the [module] (`&mut Module`) that is to form the package |
|
||||
| `block` | a code block that initializes the package |
|
||||
|
||||
* `description` - doc comment for the package.
|
||||
|
||||
* `variable` - a variable name holding a reference to the [module] that is to form the package.
|
||||
|
||||
* `block` - a code block that initializes the package.
|
||||
Examples
|
||||
--------
|
||||
|
||||
```rust
|
||||
// Import necessary types and traits.
|
||||
@ -43,7 +41,7 @@ use rhai::{
|
||||
|
||||
// Define the package 'MyPackage'.
|
||||
def_package!(rhai:MyPackage:"My own personal super package", module, {
|
||||
// Aggregate existing packages simply by calling 'init' on each.
|
||||
// Aggregate other packages simply by calling 'init' on each.
|
||||
ArithmeticPackage::init(module);
|
||||
LogicPackage::init(module);
|
||||
BasicArrayPackage::init(module);
|
||||
@ -64,14 +62,14 @@ def_package!(rhai:MyPackage:"My own personal super package", module, {
|
||||
Create a Custom Package from a Plugin Module
|
||||
-------------------------------------------
|
||||
|
||||
By far the easiest way to create a custom module is to call `rhai::plugin::combine_with_exported_module!`
|
||||
from within `rhai::def_package!` which simply merges in all the functions defined within a [plugin module].
|
||||
By far the easiest way to create a custom module is to call `plugin::combine_with_exported_module!`
|
||||
from within `def_package!` which simply merges in all the functions defined within a [plugin module].
|
||||
|
||||
In fact, this exactly is how Rhai's built-in packages, such as `BasicMathPackage`, are implemented.
|
||||
|
||||
Because of the specific requirements of a [package], all sub-modules are _flattened_
|
||||
(i.e. all functions defined within sub-modules are pulled up and registered at the top level instead)
|
||||
and so there will not be any sub-modules added to the package.
|
||||
Due to specific requirements of a [package], `plugin::combine_with_exported_module!`
|
||||
_flattens_ all sub-modules (i.e. all functions and [type iterators] defined within sub-modules
|
||||
are pulled up to the top level instead) and so there will not be any sub-modules added to the package.
|
||||
|
||||
Variables in the [plugin module] are ignored.
|
||||
|
||||
@ -107,7 +105,7 @@ mod my_module {
|
||||
|
||||
// Define the package 'MyPackage'.
|
||||
def_package!(rhai:MyPackage:"My own personal super package", module, {
|
||||
// Aggregate existing packages simply by calling 'init' on each.
|
||||
// Aggregate other packages simply by calling 'init' on each.
|
||||
ArithmeticPackage::init(module);
|
||||
LogicPackage::init(module);
|
||||
BasicArrayPackage::init(module);
|
||||
|
||||
@ -3,61 +3,56 @@ Packages
|
||||
|
||||
{{#include ../../links.md}}
|
||||
|
||||
Standard built-in Rhai features are provided in various _packages_ that can be loaded via a call to `Engine::load_package`.
|
||||
The built-in library of Rhai is provided as various _packages_ that can be
|
||||
turned into _shared_ [modules], which in turn can be registered into the
|
||||
_global namespace_ of an [`Engine`] via `Engine::register_global_module`.
|
||||
|
||||
Packages reside under `rhai::packages::*` and the trait `rhai::packages::Package` must be loaded in order for
|
||||
packages to be used.
|
||||
Packages reside under `rhai::packages::*` and the trait `rhai::packages::Package`
|
||||
must be loaded in order for packages to be used.
|
||||
|
||||
### Packages _are_ Modules
|
||||
|
||||
Internally, a _package_ is a _newtype_ wrapping a pre-defined [module],
|
||||
with some conveniences to make it easier to define and use as a standard
|
||||
_library_ for an [`Engine`].
|
||||
|
||||
Packages typically contain Rust functions that are callable within a Rhai script.
|
||||
All functions registered in a package is loaded under the _global namespace_
|
||||
All _top-level_ functions in a package are available under the _global namespace_
|
||||
(i.e. they're available without namespace qualifiers).
|
||||
|
||||
Once a package is created (e.g. via `Package::new`), it can be _shared_ (via `Package::get`)
|
||||
among multiple instances of [`Engine`], even across threads (under [`sync`]).
|
||||
Therefore, a package only has to be created _once_.
|
||||
Sub-modules and variables are ignored in packages.
|
||||
|
||||
|
||||
Share a Package Among Multiple `Engine`'s
|
||||
----------------------------------------
|
||||
|
||||
`Engine::register_global_module` and `Engine::register_static_module` both require _shared_ [modules].
|
||||
|
||||
Once a package is created (e.g. via `Package::new`), it can create _shared_ [modules]
|
||||
(via `Package::as_shared_module`) and register them into multiple instances of [`Engine`],
|
||||
even across threads (under the [`sync`] feature).
|
||||
|
||||
Therefore, a package only has to be created _once_ and essentially shared among multiple
|
||||
[`Engine`] instances. This is particular useful when spawning large number of [raw `Engine`'s][raw `Engine`].
|
||||
|
||||
```rust
|
||||
use rhai::Engine;
|
||||
use rhai::packages::Package // load the 'Package' trait to use packages
|
||||
use rhai::packages::CorePackage; // the 'core' package contains basic functionalities (e.g. arithmetic)
|
||||
|
||||
let mut engine = Engine::new_raw(); // create a 'raw' Engine
|
||||
let package = CorePackage::new(); // create a package - can be shared among multiple `Engine` instances
|
||||
// Create a package - can be shared among multiple 'Engine' instances
|
||||
let package = CorePackage::new();
|
||||
|
||||
engine.load_package(package.get()); // load the package manually. 'get' returns a reference to the shared package
|
||||
let mut engines_collection: Vec<Engine> = Vec::new();
|
||||
|
||||
// Create 100 'raw' Engines
|
||||
for _ in 0..100 {
|
||||
let mut engine = Engine::new_raw();
|
||||
|
||||
// Register the package into the global namespace.
|
||||
// 'Package::as_shared_module' converts the package into a shared module.
|
||||
engine.register_global_module(package.as_shared_module());
|
||||
|
||||
engines_collection.push(engine);
|
||||
}
|
||||
```
|
||||
|
||||
|
||||
Difference Between a Package and a Module
|
||||
----------------------------------------
|
||||
|
||||
Packages are internally implemented as [modules], so they share a lot of behavior and characteristics.
|
||||
|
||||
The main difference is that a package loads under the _global_ namespace, while a module loads under its own
|
||||
namespace alias specified in an [`import`] statement (see also [modules]).
|
||||
|
||||
A package is _static_ (i.e. pre-loaded into an [`Engine`]), while a module is _dynamic_ (i.e. loaded with
|
||||
the `import` statement).
|
||||
|
||||
Sub-modules in a package are _flattened_, meaning that functions from them must be pulled up to the root level.
|
||||
In other words, there can be no sub-modules in a package, and everything should reside in one, flat namespace.
|
||||
|
||||
Only functions matter for a package. Constant variables registered in a package are ignored.
|
||||
|
||||
|
||||
Load a Module as a Package
|
||||
--------------------------
|
||||
|
||||
Stand-alone [modules] can be loaded directly into an [`Engine`] as a package via the same `Engine::load_package` API.
|
||||
|
||||
```rust
|
||||
let mut module = Module::new();
|
||||
:
|
||||
// add functions into module
|
||||
:
|
||||
|
||||
engine.load_package(module);
|
||||
```
|
||||
|
||||
[Modules], however, are not _shared_, so use a [custom package] if it must be shared among multiple
|
||||
instances of [`Engine`].
|
||||
|
||||
@ -1,42 +0,0 @@
|
||||
Load a Plugin Module as a Package
|
||||
================================
|
||||
|
||||
{{#include ../../links.md}}
|
||||
|
||||
[Plugin modules] can be loaded as a package just like a normal [module]
|
||||
via the `exported_module!` macro.
|
||||
|
||||
```rust
|
||||
use rhai::Engine;
|
||||
use rhai::plugin::*;
|
||||
|
||||
// Define plugin module.
|
||||
#[export_module]
|
||||
mod my_module {
|
||||
pub fn greet(name: &str) -> String {
|
||||
format!("hello, {}!", name)
|
||||
}
|
||||
pub fn get_num() -> i64 {
|
||||
42
|
||||
}
|
||||
}
|
||||
|
||||
fn main() {
|
||||
let mut engine = Engine::new();
|
||||
|
||||
// Create plugin module.
|
||||
let module = exported_module!(my_module);
|
||||
|
||||
// Make the 'greet' and 'get_num' functions available to scripts.
|
||||
engine.load_package(module);
|
||||
}
|
||||
```
|
||||
|
||||
|
||||
Share a Package Among `Engine`s
|
||||
------------------------------
|
||||
|
||||
Loading a [module] via `Engine::load_package` consumes the module and it cannot be used again.
|
||||
|
||||
If the functions are needed for multiple instances of [`Engine`], create a [custom package] from the
|
||||
[plugin module], which can then be shared with `Package::get`.
|
||||
@ -49,6 +49,6 @@ Use a Raw [`Engine`]
|
||||
A _raw_ engine supports, out of the box, only a very [restricted set]({{rootUrl}}/engine/raw.md#built-in-operators)
|
||||
of basic arithmetic and logical operators.
|
||||
|
||||
Selectively include other necessary functionalities by loading specific [packages] to minimize the footprint.
|
||||
Selectively include other necessary functionalities by picking specific [packages] to minimize the footprint.
|
||||
|
||||
Packages are sharable (even across threads via the [`sync`] feature), so they only have to be created once.
|
||||
Packages are shared (even across threads via the [`sync`] feature), so they only have to be created once.
|
||||
|
||||
62
src/ast.rs
62
src/ast.rs
@ -228,7 +228,7 @@ impl AST {
|
||||
/// _(INTERNALS)_ Get the statements.
|
||||
/// Exported under the `internals` feature only.
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this method is volatile and may change")]
|
||||
#[deprecated = "this method is volatile and may change"]
|
||||
#[inline(always)]
|
||||
pub fn statements(&self) -> &[Stmt] {
|
||||
&self.statements
|
||||
@ -255,7 +255,7 @@ impl AST {
|
||||
/// _(INTERNALS)_ Get the internal [`Module`] containing all script-defined functions.
|
||||
/// Exported under the `internals` feature only.
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this method is volatile and may change")]
|
||||
#[deprecated = "this method is volatile and may change"]
|
||||
#[inline(always)]
|
||||
pub fn lib(&self) -> &Module {
|
||||
&self.functions
|
||||
@ -640,25 +640,6 @@ impl AsRef<Module> for AST {
|
||||
}
|
||||
}
|
||||
|
||||
/// _(INTERNALS)_ An identifier containing a [string][String] name and a [position][Position].
|
||||
/// Exported under the `internals` feature only.
|
||||
///
|
||||
/// ## WARNING
|
||||
///
|
||||
/// This type is volatile and may change.
|
||||
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
|
||||
pub struct Ident {
|
||||
pub name: String,
|
||||
pub pos: Position,
|
||||
}
|
||||
|
||||
impl Ident {
|
||||
/// Create a new `Identifier`.
|
||||
pub fn new(name: String, pos: Position) -> Self {
|
||||
Self { name, pos }
|
||||
}
|
||||
}
|
||||
|
||||
/// _(INTERNALS)_ An identifier containing an [immutable string][ImmutableString] name and a [position][Position].
|
||||
/// Exported under the `internals` feature only.
|
||||
///
|
||||
@ -666,30 +647,13 @@ impl Ident {
|
||||
///
|
||||
/// This type is volatile and may change.
|
||||
#[derive(Debug, Clone, Eq, PartialEq, Hash)]
|
||||
pub struct IdentX {
|
||||
pub struct Ident {
|
||||
/// Identifier name.
|
||||
pub name: ImmutableString,
|
||||
/// Declaration position.
|
||||
pub pos: Position,
|
||||
}
|
||||
|
||||
impl From<Ident> for IdentX {
|
||||
fn from(value: Ident) -> Self {
|
||||
Self {
|
||||
name: value.name.into(),
|
||||
pos: value.pos,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl IdentX {
|
||||
/// Create a new `Identifier`.
|
||||
pub fn new(name: impl Into<ImmutableString>, pos: Position) -> Self {
|
||||
Self {
|
||||
name: name.into(),
|
||||
pos,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// _(INTERNALS)_ A type encapsulating the mode of a `return`/`throw` statement.
|
||||
/// Exported under the `internals` feature only.
|
||||
///
|
||||
@ -729,9 +693,9 @@ pub enum Stmt {
|
||||
/// `for` id `in` expr `{` stmt `}`
|
||||
For(Expr, Box<(String, Stmt)>, Position),
|
||||
/// \[`export`\] `let` id `=` expr
|
||||
Let(Box<IdentX>, Option<Expr>, bool, Position),
|
||||
Let(Box<Ident>, Option<Expr>, bool, Position),
|
||||
/// \[`export`\] `const` id `=` expr
|
||||
Const(Box<IdentX>, Option<Expr>, bool, Position),
|
||||
Const(Box<Ident>, Option<Expr>, bool, Position),
|
||||
/// expr op`=` expr
|
||||
Assignment(Box<(Expr, Cow<'static, str>, Expr)>, Position),
|
||||
/// `{` stmt`;` ... `}`
|
||||
@ -748,13 +712,13 @@ pub enum Stmt {
|
||||
Return((ReturnType, Position), Option<Expr>, Position),
|
||||
/// `import` expr `as` var
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
Import(Expr, Option<Box<IdentX>>, Position),
|
||||
Import(Expr, Option<Box<Ident>>, Position),
|
||||
/// `export` var `as` var `,` ...
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
Export(Vec<(IdentX, Option<IdentX>)>, Position),
|
||||
Export(Vec<(Ident, Option<Ident>)>, Position),
|
||||
/// Convert a variable to shared.
|
||||
#[cfg(not(feature = "no_closure"))]
|
||||
Share(IdentX),
|
||||
Share(Ident),
|
||||
}
|
||||
|
||||
impl Default for Stmt {
|
||||
@ -996,13 +960,13 @@ pub enum Expr {
|
||||
/// [ expr, ... ]
|
||||
Array(Box<StaticVec<Expr>>, Position),
|
||||
/// #{ name:expr, ... }
|
||||
Map(Box<StaticVec<(IdentX, Expr)>>, Position),
|
||||
Map(Box<StaticVec<(Ident, Expr)>>, Position),
|
||||
/// ()
|
||||
Unit(Position),
|
||||
/// Variable access - (optional index, optional modules, hash, variable name)
|
||||
Variable(Box<(Option<NonZeroUsize>, Option<Box<NamespaceRef>>, u64, IdentX)>),
|
||||
Variable(Box<(Option<NonZeroUsize>, Option<Box<NamespaceRef>>, u64, Ident)>),
|
||||
/// Property access - (getter, setter), prop
|
||||
Property(Box<((ImmutableString, ImmutableString), IdentX)>),
|
||||
Property(Box<((ImmutableString, ImmutableString), Ident)>),
|
||||
/// { [statement][Stmt] }
|
||||
Stmt(Box<StaticVec<Stmt>>, Position),
|
||||
/// Wrapped [expression][`Expr`] - should not be optimized away.
|
||||
|
||||
130
src/engine.rs
130
src/engine.rs
@ -1,6 +1,6 @@
|
||||
//! Main module defining the script evaluation [`Engine`].
|
||||
|
||||
use crate::ast::{Expr, FnCallExpr, Ident, IdentX, ReturnType, Stmt};
|
||||
use crate::ast::{Expr, FnCallExpr, Ident, ReturnType, Stmt};
|
||||
use crate::dynamic::{map_std_type_name, AccessMode, Union, Variant};
|
||||
use crate::fn_call::run_builtin_op_assignment;
|
||||
use crate::fn_native::{
|
||||
@ -9,7 +9,7 @@ use crate::fn_native::{
|
||||
};
|
||||
use crate::module::NamespaceRef;
|
||||
use crate::optimize::OptimizationLevel;
|
||||
use crate::packages::{Package, PackagesCollection, StandardPackage};
|
||||
use crate::packages::{Package, StandardPackage};
|
||||
use crate::r#unsafe::unsafe_cast_var_name_to_lifetime;
|
||||
use crate::stdlib::{
|
||||
any::{type_name, TypeId},
|
||||
@ -55,74 +55,60 @@ pub const TYPICAL_MAP_SIZE: usize = 8; // Small maps are typical
|
||||
// the module name will live beyond the AST of the eval script text.
|
||||
// The best we can do is a shared reference.
|
||||
#[derive(Debug, Clone, Default)]
|
||||
pub struct Imports(Option<StaticVec<(ImmutableString, Shared<Module>)>>);
|
||||
pub struct Imports(StaticVec<(ImmutableString, Shared<Module>)>);
|
||||
|
||||
impl Imports {
|
||||
/// Get the length of this stack of imported [modules][Module].
|
||||
pub fn len(&self) -> usize {
|
||||
self.0.as_ref().map_or(0, StaticVec::len)
|
||||
self.0.len()
|
||||
}
|
||||
/// Is this stack of imported [modules][Module] empty?
|
||||
pub fn is_empty(&self) -> bool {
|
||||
self.0.as_ref().map_or(true, StaticVec::is_empty)
|
||||
self.0.is_empty()
|
||||
}
|
||||
/// Get the imported [modules][Module] at a particular index.
|
||||
pub fn get(&self, index: usize) -> Option<Shared<Module>> {
|
||||
self.0
|
||||
.as_ref()
|
||||
.and_then(|x| x.get(index))
|
||||
.map(|(_, m)| m)
|
||||
.cloned()
|
||||
self.0.get(index).map(|(_, m)| m).cloned()
|
||||
}
|
||||
/// Get the index of an imported [modules][Module] by name.
|
||||
pub fn find(&self, name: &str) -> Option<usize> {
|
||||
self.0.as_ref().and_then(|x| {
|
||||
x.iter()
|
||||
.enumerate()
|
||||
.rev()
|
||||
.find(|(_, (key, _))| key.as_str() == name)
|
||||
.map(|(index, _)| index)
|
||||
})
|
||||
self.0
|
||||
.iter()
|
||||
.enumerate()
|
||||
.rev()
|
||||
.find(|(_, (key, _))| key.as_str() == name)
|
||||
.map(|(index, _)| index)
|
||||
}
|
||||
/// Push an imported [modules][Module] onto the stack.
|
||||
pub fn push(&mut self, name: impl Into<ImmutableString>, module: impl Into<Shared<Module>>) {
|
||||
if self.0.is_none() {
|
||||
self.0 = Some(Default::default());
|
||||
}
|
||||
|
||||
self.0.as_mut().unwrap().push((name.into(), module.into()));
|
||||
self.0.push((name.into(), module.into()));
|
||||
}
|
||||
/// Truncate the stack of imported [modules][Module] to a particular length.
|
||||
pub fn truncate(&mut self, size: usize) {
|
||||
if self.0.is_some() {
|
||||
self.0.as_mut().unwrap().truncate(size);
|
||||
}
|
||||
self.0.truncate(size);
|
||||
}
|
||||
/// Get an iterator to this stack of imported [modules][Module] in reverse order.
|
||||
#[allow(dead_code)]
|
||||
pub fn iter<'a>(&'a self) -> impl Iterator<Item = (&'a str, &'a Module)> + 'a {
|
||||
self.0.iter().flat_map(|lib| {
|
||||
lib.iter()
|
||||
.rev()
|
||||
.map(|(name, module)| (name.as_str(), module.as_ref()))
|
||||
})
|
||||
self.0
|
||||
.iter()
|
||||
.rev()
|
||||
.map(|(name, module)| (name.as_str(), module.as_ref()))
|
||||
}
|
||||
/// Get an iterator to this stack of imported [modules][Module] in reverse order.
|
||||
#[allow(dead_code)]
|
||||
pub(crate) fn iter_raw<'a>(
|
||||
&'a self,
|
||||
) -> impl Iterator<Item = (&'a ImmutableString, &'a Shared<Module>)> + 'a {
|
||||
self.0
|
||||
.iter()
|
||||
.flat_map(|lib| lib.iter().rev().map(|(n, m)| (n, m)))
|
||||
self.0.iter().rev().map(|(n, m)| (n, m))
|
||||
}
|
||||
/// Get a consuming iterator to this stack of imported [modules][Module] in reverse order.
|
||||
pub fn into_iter(self) -> impl Iterator<Item = (ImmutableString, Shared<Module>)> {
|
||||
self.0.into_iter().flat_map(|lib| lib.into_iter().rev())
|
||||
self.0.into_iter().rev()
|
||||
}
|
||||
/// Add a stream of imported [modules][Module].
|
||||
pub fn extend(&mut self, stream: impl Iterator<Item = (ImmutableString, Shared<Module>)>) {
|
||||
self.0.as_mut().unwrap().extend(stream)
|
||||
self.0.extend(stream)
|
||||
}
|
||||
/// Does the specified function hash key exist in this stack of imported [modules][Module]?
|
||||
#[allow(dead_code)]
|
||||
@ -130,9 +116,7 @@ impl Imports {
|
||||
if hash == 0 {
|
||||
false
|
||||
} else {
|
||||
self.0.as_ref().map_or(false, |x| {
|
||||
x.iter().any(|(_, m)| m.contains_qualified_fn(hash))
|
||||
})
|
||||
self.0.iter().any(|(_, m)| m.contains_qualified_fn(hash))
|
||||
}
|
||||
}
|
||||
/// Get specified function via its hash key.
|
||||
@ -141,22 +125,22 @@ impl Imports {
|
||||
None
|
||||
} else {
|
||||
self.0
|
||||
.as_ref()
|
||||
.and_then(|x| x.iter().rev().find_map(|(_, m)| m.get_qualified_fn(hash)))
|
||||
.iter()
|
||||
.rev()
|
||||
.find_map(|(_, m)| m.get_qualified_fn(hash))
|
||||
}
|
||||
}
|
||||
/// Does the specified [`TypeId`][std::any::TypeId] iterator exist in this stack of imported [modules][Module]?
|
||||
#[allow(dead_code)]
|
||||
pub fn contains_iter(&self, id: TypeId) -> bool {
|
||||
self.0.as_ref().map_or(false, |x| {
|
||||
x.iter().any(|(_, m)| m.contains_qualified_iter(id))
|
||||
})
|
||||
self.0.iter().any(|(_, m)| m.contains_qualified_iter(id))
|
||||
}
|
||||
/// Get the specified [`TypeId`][std::any::TypeId] iterator.
|
||||
pub fn get_iter(&self, id: TypeId) -> Option<IteratorFn> {
|
||||
self.0
|
||||
.as_ref()
|
||||
.and_then(|x| x.iter().rev().find_map(|(_, m)| m.get_qualified_iter(id)))
|
||||
.iter()
|
||||
.rev()
|
||||
.find_map(|(_, m)| m.get_qualified_iter(id))
|
||||
}
|
||||
}
|
||||
|
||||
@ -629,8 +613,8 @@ pub struct Engine {
|
||||
|
||||
/// A module containing all functions directly loaded into the Engine.
|
||||
pub(crate) global_namespace: Module,
|
||||
/// A collection of all library packages loaded into the Engine.
|
||||
pub(crate) packages: PackagesCollection,
|
||||
/// A collection of all modules loaded into the global namespace of the Engine.
|
||||
pub(crate) global_modules: StaticVec<Shared<Module>>,
|
||||
/// A collection of all sub-modules directly loaded into the Engine.
|
||||
pub(crate) global_sub_modules: Imports,
|
||||
|
||||
@ -734,7 +718,7 @@ pub fn search_imports(
|
||||
state: &mut State,
|
||||
namespace: &NamespaceRef,
|
||||
) -> Result<Shared<Module>, Box<EvalAltResult>> {
|
||||
let IdentX { name: root, pos } = &namespace[0];
|
||||
let Ident { name: root, pos } = &namespace[0];
|
||||
|
||||
// Qualified - check if the root module is directly indexed
|
||||
let index = if state.always_search {
|
||||
@ -761,8 +745,8 @@ impl Engine {
|
||||
let mut engine = Self {
|
||||
id: Default::default(),
|
||||
|
||||
packages: Default::default(),
|
||||
global_namespace: Default::default(),
|
||||
global_modules: Default::default(),
|
||||
global_sub_modules: Default::default(),
|
||||
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
@ -814,20 +798,20 @@ impl Engine {
|
||||
disable_doc_comments: false,
|
||||
};
|
||||
|
||||
engine.load_package(StandardPackage::new().get());
|
||||
engine.register_global_module(StandardPackage::new().as_shared_module());
|
||||
|
||||
engine
|
||||
}
|
||||
|
||||
/// Create a new [`Engine`] with minimal built-in functions.
|
||||
/// Use the [`load_package`][Engine::load_package] method to load additional packages of functions.
|
||||
/// Use the [`register_global_module`][Engine::register_global_module] method to load additional packages of functions.
|
||||
#[inline]
|
||||
pub fn new_raw() -> Self {
|
||||
Self {
|
||||
id: Default::default(),
|
||||
|
||||
packages: Default::default(),
|
||||
global_namespace: Default::default(),
|
||||
global_modules: Default::default(),
|
||||
global_sub_modules: Default::default(),
|
||||
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
@ -884,7 +868,7 @@ impl Engine {
|
||||
match expr {
|
||||
Expr::Variable(v) => match v.as_ref() {
|
||||
// Qualified variable
|
||||
(_, Some(modules), hash_var, IdentX { name, pos }) => {
|
||||
(_, Some(modules), hash_var, Ident { name, pos }) => {
|
||||
let module = search_imports(mods, state, modules)?;
|
||||
let target = module.get_qualified_var(*hash_var).map_err(|mut err| {
|
||||
match *err {
|
||||
@ -918,7 +902,7 @@ impl Engine {
|
||||
this_ptr: &'s mut Option<&mut Dynamic>,
|
||||
expr: &'a Expr,
|
||||
) -> Result<(Target<'s>, &'a str, Position), Box<EvalAltResult>> {
|
||||
let (index, _, _, IdentX { name, pos }) = match expr {
|
||||
let (index, _, _, Ident { name, pos }) = match expr {
|
||||
Expr::Variable(v) => v.as_ref(),
|
||||
_ => unreachable!(),
|
||||
};
|
||||
@ -1115,7 +1099,7 @@ impl Engine {
|
||||
Expr::FnCall(_, _) => unreachable!(),
|
||||
// {xxx:map}.id = ???
|
||||
Expr::Property(x) if target_val.is::<Map>() && new_val.is_some() => {
|
||||
let IdentX { name, pos } = &x.1;
|
||||
let Ident { name, pos } = &x.1;
|
||||
let index = name.clone().into();
|
||||
let mut val = self.get_indexed_mut(
|
||||
mods, state, lib, target_val, index, *pos, true, is_ref, false, level,
|
||||
@ -1128,7 +1112,7 @@ impl Engine {
|
||||
}
|
||||
// {xxx:map}.id
|
||||
Expr::Property(x) if target_val.is::<Map>() => {
|
||||
let IdentX { name, pos } = &x.1;
|
||||
let Ident { name, pos } = &x.1;
|
||||
let index = name.clone().into();
|
||||
let val = self.get_indexed_mut(
|
||||
mods, state, lib, target_val, index, *pos, false, is_ref, false, level,
|
||||
@ -1138,7 +1122,7 @@ impl Engine {
|
||||
}
|
||||
// xxx.id = ???
|
||||
Expr::Property(x) if new_val.is_some() => {
|
||||
let ((_, setter), IdentX { pos, .. }) = x.as_ref();
|
||||
let ((_, setter), Ident { pos, .. }) = x.as_ref();
|
||||
let mut new_val = new_val;
|
||||
let mut args = [target_val, &mut new_val.as_mut().unwrap().0];
|
||||
self.exec_fn_call(
|
||||
@ -1150,7 +1134,7 @@ impl Engine {
|
||||
}
|
||||
// xxx.id
|
||||
Expr::Property(x) => {
|
||||
let ((getter, _), IdentX { pos, .. }) = x.as_ref();
|
||||
let ((getter, _), Ident { pos, .. }) = x.as_ref();
|
||||
let mut args = [target_val];
|
||||
self.exec_fn_call(
|
||||
mods, state, lib, getter, 0, &mut args, is_ref, true, false, *pos,
|
||||
@ -1163,7 +1147,7 @@ impl Engine {
|
||||
Expr::Index(x, x_pos) | Expr::Dot(x, x_pos) if target_val.is::<Map>() => {
|
||||
let mut val = match &x.lhs {
|
||||
Expr::Property(p) => {
|
||||
let IdentX { name, pos } = &p.1;
|
||||
let Ident { name, pos } = &p.1;
|
||||
let index = name.clone().into();
|
||||
self.get_indexed_mut(
|
||||
mods, state, lib, target_val, index, *pos, false, is_ref, true,
|
||||
@ -1204,7 +1188,7 @@ impl Engine {
|
||||
match &x.lhs {
|
||||
// xxx.prop[expr] | xxx.prop.expr
|
||||
Expr::Property(p) => {
|
||||
let ((getter, setter), IdentX { pos, .. }) = p.as_ref();
|
||||
let ((getter, setter), Ident { pos, .. }) = p.as_ref();
|
||||
let arg_values = &mut [target_val, &mut Default::default()];
|
||||
let args = &mut arg_values[..1];
|
||||
let (mut val, updated) = self
|
||||
@ -1319,7 +1303,7 @@ impl Engine {
|
||||
match lhs {
|
||||
// id.??? or id[???]
|
||||
Expr::Variable(x) => {
|
||||
let IdentX {
|
||||
let Ident {
|
||||
name: var_name,
|
||||
pos: var_pos,
|
||||
} = &x.3;
|
||||
@ -1675,7 +1659,7 @@ impl Engine {
|
||||
|
||||
if target.is::<Map>() {
|
||||
// map.prop - point directly to the item
|
||||
let (_, IdentX { name, pos }) = p.as_ref();
|
||||
let (_, Ident { name, pos }) = p.as_ref();
|
||||
let idx = name.clone().into();
|
||||
|
||||
if target.is_shared() || target.is_value() {
|
||||
@ -1693,7 +1677,7 @@ impl Engine {
|
||||
.map(|v| (v, *pos))
|
||||
} else {
|
||||
// var.prop - call property getter
|
||||
let ((getter, _), IdentX { pos, .. }) = p.as_ref();
|
||||
let ((getter, _), Ident { pos, .. }) = p.as_ref();
|
||||
let mut args = [target.as_mut()];
|
||||
self.exec_fn_call(
|
||||
mods, state, lib, getter, 0, &mut args, is_ref, true, false, *pos,
|
||||
@ -1781,7 +1765,7 @@ impl Engine {
|
||||
Expr::Map(x, _) => {
|
||||
let mut map =
|
||||
Map::with_capacity(crate::stdlib::cmp::max(TYPICAL_MAP_SIZE, x.len()));
|
||||
for (IdentX { name: key, .. }, expr) in x.as_ref() {
|
||||
for (Ident { name: key, .. }, expr) in x.as_ref() {
|
||||
map.insert(
|
||||
key.clone(),
|
||||
self.eval_expr(scope, mods, state, lib, this_ptr, expr, level)?,
|
||||
@ -1987,7 +1971,11 @@ impl Engine {
|
||||
match self
|
||||
.global_namespace
|
||||
.get_fn(hash_fn, false)
|
||||
.or_else(|| self.packages.get_fn(hash_fn))
|
||||
.or_else(|| {
|
||||
self.global_modules
|
||||
.iter()
|
||||
.find_map(|m| m.get_fn(hash_fn, false))
|
||||
})
|
||||
.or_else(|| mods.get_fn(hash_fn))
|
||||
{
|
||||
// op= function registered as method
|
||||
@ -2196,7 +2184,11 @@ impl Engine {
|
||||
let func = self
|
||||
.global_namespace
|
||||
.get_iter(iter_type)
|
||||
.or_else(|| self.packages.get_iter(iter_type))
|
||||
.or_else(|| {
|
||||
self.global_modules
|
||||
.iter()
|
||||
.find_map(|m| m.get_iter(iter_type))
|
||||
})
|
||||
.or_else(|| mods.get_iter(iter_type));
|
||||
|
||||
if let Some(func) = func {
|
||||
@ -2272,9 +2264,9 @@ impl Engine {
|
||||
|
||||
if let Some(Ident { name, .. }) = var_def {
|
||||
let var_name: Cow<'_, str> = if state.is_global() {
|
||||
name.clone().into()
|
||||
name.to_string().into()
|
||||
} else {
|
||||
unsafe_cast_var_name_to_lifetime(name).into()
|
||||
unsafe_cast_var_name_to_lifetime(&name).into()
|
||||
};
|
||||
scope.push(var_name, value);
|
||||
}
|
||||
@ -2410,7 +2402,7 @@ impl Engine {
|
||||
// Export statement
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
Stmt::Export(list, _) => {
|
||||
for (IdentX { name, pos: id_pos }, rename) in list.iter() {
|
||||
for (Ident { name, pos: id_pos }, rename) in list.iter() {
|
||||
// Mark scope variables as public
|
||||
if let Some(index) = scope.get_index(name).map(|(i, _)| i) {
|
||||
let alias = rename.as_ref().map(|x| &x.name).unwrap_or_else(|| name);
|
||||
|
||||
@ -14,8 +14,8 @@ use crate::stdlib::{
|
||||
};
|
||||
use crate::utils::get_hasher;
|
||||
use crate::{
|
||||
scope::Scope, Dynamic, Engine, EvalAltResult, FnAccess, FnNamespace, NativeCallContext,
|
||||
ParseError, Position, AST,
|
||||
scope::Scope, Dynamic, Engine, EvalAltResult, FnAccess, FnNamespace, Module, NativeCallContext,
|
||||
ParseError, Position, Shared, AST,
|
||||
};
|
||||
|
||||
#[cfg(not(feature = "no_index"))]
|
||||
@ -48,7 +48,7 @@ impl Engine {
|
||||
/// Notice that this will _consume_ the argument, replacing it with `()`.
|
||||
///
|
||||
/// To access the first mutable parameter, use `args.get_mut(0).unwrap()`
|
||||
#[deprecated(note = "this function is volatile and may change")]
|
||||
#[deprecated = "this function is volatile and may change"]
|
||||
#[inline(always)]
|
||||
pub fn register_raw_fn<T: Variant + Clone>(
|
||||
&mut self,
|
||||
@ -723,7 +723,33 @@ impl Engine {
|
||||
self.register_indexer_get(getter)
|
||||
.register_indexer_set(setter)
|
||||
}
|
||||
/// Register a [`Module`][crate::Module] as a fixed module namespace with the [`Engine`].
|
||||
/// Register a shared [`Module`][crate::Module] into the global namespace of [`Engine`].
|
||||
///
|
||||
/// All functions and type iterators are automatically available to scripts without namespace qualifications.
|
||||
///
|
||||
/// Sub-modules and variables are **ignored**.
|
||||
///
|
||||
/// When searching for functions, modules loaded later are preferred.
|
||||
/// In other words, loaded modules are searched in reverse order.
|
||||
#[inline(always)]
|
||||
pub fn register_global_module(&mut self, module: Shared<Module>) -> &mut Self {
|
||||
// Insert the module into the front
|
||||
self.global_modules.insert(0, module);
|
||||
self
|
||||
}
|
||||
/// Register a shared [`Module`][crate::Module] into the global namespace of [`Engine`].
|
||||
///
|
||||
/// ## Deprecated
|
||||
///
|
||||
/// Use `register_global_module` instead.
|
||||
#[inline(always)]
|
||||
#[deprecated = "use `register_global_module` instead"]
|
||||
pub fn load_package(&mut self, module: impl Into<Shared<Module>>) -> &mut Self {
|
||||
self.register_global_module(module.into())
|
||||
}
|
||||
/// Register a shared [`Module`][crate::Module] as a static module namespace with the [`Engine`].
|
||||
///
|
||||
/// Functions marked `FnNamespace::Global` and type iterators are exposed to scripts without namespace qualifications.
|
||||
///
|
||||
/// # Example
|
||||
///
|
||||
@ -738,20 +764,18 @@ impl Engine {
|
||||
/// module.set_fn_1("calc", |x: i64| Ok(x + 1));
|
||||
///
|
||||
/// // Register the module as a fixed sub-module
|
||||
/// engine.register_module("CalcService", module);
|
||||
/// engine.register_static_module("CalcService", module.into());
|
||||
///
|
||||
/// assert_eq!(engine.eval::<i64>("CalcService::calc(41)")?, 42);
|
||||
/// # Ok(())
|
||||
/// # }
|
||||
/// ```
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
pub fn register_module(
|
||||
pub fn register_static_module(
|
||||
&mut self,
|
||||
name: impl Into<crate::ImmutableString>,
|
||||
module: impl Into<crate::Shared<crate::Module>>,
|
||||
module: Shared<Module>,
|
||||
) -> &mut Self {
|
||||
let module = module.into();
|
||||
|
||||
if !module.is_indexed() {
|
||||
// Index the module (making a clone copy if necessary) if it is not indexed
|
||||
let mut module = crate::fn_native::shared_take_or_clone(module);
|
||||
@ -762,6 +786,21 @@ impl Engine {
|
||||
}
|
||||
self
|
||||
}
|
||||
/// Register a shared [`Module`][crate::Module] as a static module namespace with the [`Engine`].
|
||||
///
|
||||
/// ## Deprecated
|
||||
///
|
||||
/// Use `register_static_module` instead.
|
||||
#[cfg(not(feature = "no_module"))]
|
||||
#[inline(always)]
|
||||
#[deprecated = "use `register_static_module` instead"]
|
||||
pub fn register_module(
|
||||
&mut self,
|
||||
name: impl Into<crate::ImmutableString>,
|
||||
module: impl Into<Shared<Module>>,
|
||||
) -> &mut Self {
|
||||
self.register_static_module(name, module.into())
|
||||
}
|
||||
/// Compile a string into an [`AST`], which can be used later for evaluation.
|
||||
///
|
||||
/// # Example
|
||||
@ -1681,7 +1720,11 @@ impl Engine {
|
||||
});
|
||||
|
||||
if include_packages {
|
||||
signatures.extend(self.packages.gen_fn_signatures());
|
||||
signatures.extend(
|
||||
self.global_modules
|
||||
.iter()
|
||||
.flat_map(|m| m.gen_fn_signatures()),
|
||||
);
|
||||
}
|
||||
|
||||
signatures
|
||||
|
||||
@ -1,6 +1,5 @@
|
||||
//! Configuration settings for [`Engine`].
|
||||
|
||||
use crate::packages::PackageLibrary;
|
||||
use crate::stdlib::{format, string::String};
|
||||
use crate::token::{is_valid_identifier, Token};
|
||||
use crate::Engine;
|
||||
@ -9,16 +8,6 @@ use crate::Engine;
|
||||
use crate::stdlib::boxed::Box;
|
||||
|
||||
impl Engine {
|
||||
/// Load a new package into the [`Engine`].
|
||||
/// A simple [`Module`][crate::Module] is automatically converted into a package.
|
||||
///
|
||||
/// When searching for functions, packages loaded later are preferred.
|
||||
/// In other words, loaded packages are searched in reverse order.
|
||||
#[inline(always)]
|
||||
pub fn load_package(&mut self, package: impl Into<PackageLibrary>) -> &mut Self {
|
||||
self.packages.add(package.into());
|
||||
self
|
||||
}
|
||||
/// Control whether and how the [`Engine`] will optimize an [`AST`][crate::AST] after compilation.
|
||||
///
|
||||
/// Not available under the `no_optimize` feature.
|
||||
|
||||
@ -184,7 +184,11 @@ impl Engine {
|
||||
let f = self
|
||||
.global_namespace
|
||||
.get_fn(hash_fn, pub_only)
|
||||
.or_else(|| self.packages.get_fn(hash_fn))
|
||||
.or_else(|| {
|
||||
self.global_modules
|
||||
.iter()
|
||||
.find_map(|m| m.get_fn(hash_fn, false))
|
||||
})
|
||||
.or_else(|| mods.get_fn(hash_fn));
|
||||
|
||||
state.functions_cache.insert(hash_fn, f.cloned());
|
||||
@ -460,8 +464,8 @@ impl Engine {
|
||||
//|| (hash_script != 0 && self.global_namespace.contains_fn(hash_script, pub_only))
|
||||
|| self.global_namespace.contains_fn(hash_fn, false)
|
||||
// Then check packages
|
||||
|| (hash_script != 0 && self.packages.contains_fn(hash_script))
|
||||
|| self.packages.contains_fn(hash_fn)
|
||||
|| (hash_script != 0 && self.global_modules.iter().any(|m| m.contains_fn(hash_script, false)))
|
||||
|| self.global_modules.iter().any(|m| m.contains_fn(hash_fn, false))
|
||||
// Then check imported modules
|
||||
|| (hash_script != 0 && mods.map(|m| m.contains_fn(hash_script)).unwrap_or(false))
|
||||
|| mods.map(|m| m.contains_fn(hash_fn)).unwrap_or(false)
|
||||
@ -541,7 +545,12 @@ impl Engine {
|
||||
.map(|f| (f, m.id_raw().clone()))
|
||||
})
|
||||
//.or_else(|| self.global_namespace.get_fn(hash_script, pub_only))
|
||||
.or_else(|| self.packages.get_fn(hash_script).map(|f| (f, None)))
|
||||
.or_else(|| {
|
||||
self.global_modules
|
||||
.iter()
|
||||
.find_map(|m| m.get_fn(hash_script, false))
|
||||
.map(|f| (f, None))
|
||||
})
|
||||
//.or_else(|| mods.iter().find_map(|(_, m)| m.get_qualified_fn(hash_script).map(|f| (f, m.id_raw().clone()))))
|
||||
.unwrap();
|
||||
|
||||
|
||||
12
src/lib.rs
12
src/lib.rs
@ -174,17 +174,15 @@ pub use optimize::OptimizationLevel;
|
||||
|
||||
// Expose internal data structures.
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this type is volatile and may change")]
|
||||
#[deprecated = "this type is volatile and may change"]
|
||||
pub use token::{get_next_token, parse_string_literal, InputStream, Token, TokenizeState};
|
||||
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this type is volatile and may change")]
|
||||
pub use ast::{
|
||||
BinaryExpr, CustomExpr, Expr, FnCallExpr, Ident, IdentX, ReturnType, ScriptFnDef, Stmt,
|
||||
};
|
||||
#[deprecated = "this type is volatile and may change"]
|
||||
pub use ast::{BinaryExpr, CustomExpr, Expr, FnCallExpr, Ident, ReturnType, ScriptFnDef, Stmt};
|
||||
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this type is volatile and may change")]
|
||||
#[deprecated = "this type is volatile and may change"]
|
||||
pub use engine::{Imports, State as EvalState};
|
||||
|
||||
#[cfg(feature = "internals")]
|
||||
@ -192,7 +190,7 @@ pub use engine::{Imports, State as EvalState};
|
||||
pub use engine::Limits;
|
||||
|
||||
#[cfg(feature = "internals")]
|
||||
#[deprecated(note = "this type is volatile and may change")]
|
||||
#[deprecated = "this type is volatile and may change"]
|
||||
pub use module::NamespaceRef;
|
||||
|
||||
/// _(INTERNALS)_ Alias to [`smallvec::SmallVec<[T; 4]>`](https://crates.io/crates/smallvec),
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
//! Module defining external-loaded modules for Rhai.
|
||||
|
||||
use crate::ast::{FnAccess, IdentX};
|
||||
use crate::ast::{FnAccess, Ident};
|
||||
use crate::dynamic::Variant;
|
||||
use crate::fn_native::{shared_take_or_clone, CallableFunction, FnCallArgs, IteratorFn, SendSync};
|
||||
use crate::fn_register::by_value as cast_arg;
|
||||
@ -1906,7 +1906,7 @@ impl Module {
|
||||
///
|
||||
/// This type is volatile and may change.
|
||||
#[derive(Clone, Eq, PartialEq, Default, Hash)]
|
||||
pub struct NamespaceRef(StaticVec<IdentX>, Option<NonZeroUsize>);
|
||||
pub struct NamespaceRef(StaticVec<Ident>, Option<NonZeroUsize>);
|
||||
|
||||
impl fmt::Debug for NamespaceRef {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
@ -1921,7 +1921,7 @@ impl fmt::Debug for NamespaceRef {
|
||||
}
|
||||
|
||||
impl Deref for NamespaceRef {
|
||||
type Target = StaticVec<IdentX>;
|
||||
type Target = StaticVec<Ident>;
|
||||
|
||||
fn deref(&self) -> &Self::Target {
|
||||
&self.0
|
||||
@ -1936,15 +1936,15 @@ impl DerefMut for NamespaceRef {
|
||||
|
||||
impl fmt::Display for NamespaceRef {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
for IdentX { name, .. } in self.0.iter() {
|
||||
for Ident { name, .. } in self.0.iter() {
|
||||
write!(f, "{}{}", name, Token::DoubleColon.syntax())?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl From<StaticVec<IdentX>> for NamespaceRef {
|
||||
fn from(modules: StaticVec<IdentX>) -> Self {
|
||||
impl From<StaticVec<Ident>> for NamespaceRef {
|
||||
fn from(modules: StaticVec<Ident>) -> Self {
|
||||
Self(modules, None)
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,8 +1,6 @@
|
||||
//! Module containing all built-in _packages_ available to Rhai, plus facilities to define custom packages.
|
||||
|
||||
use crate::fn_native::{CallableFunction, IteratorFn};
|
||||
use crate::stdlib::{any::TypeId, string::String};
|
||||
use crate::{Module, Shared, StaticVec};
|
||||
use crate::{Module, Shared};
|
||||
|
||||
pub(crate) mod arithmetic;
|
||||
mod array_basic;
|
||||
@ -39,70 +37,16 @@ pub trait Package {
|
||||
fn init(lib: &mut Module);
|
||||
|
||||
/// Retrieve the generic package library from this package.
|
||||
fn get(&self) -> PackageLibrary;
|
||||
}
|
||||
fn as_shared_module(&self) -> Shared<Module>;
|
||||
|
||||
/// A sharable [`Module`][crate::Module] to facilitate sharing library instances.
|
||||
pub type PackageLibrary = Shared<Module>;
|
||||
|
||||
/// Type containing a collection of [`PackageLibrary`] instances.
|
||||
/// All function and type iterator keys in the loaded packages are indexed for fast access.
|
||||
#[derive(Debug, Clone, Default)]
|
||||
pub(crate) struct PackagesCollection(Option<StaticVec<PackageLibrary>>);
|
||||
|
||||
impl PackagesCollection {
|
||||
/// Add a [`PackageLibrary`] into the [`PackagesCollection`].
|
||||
/// Retrieve the generic package library from this package.
|
||||
///
|
||||
/// Packages are searched in reverse order.
|
||||
pub fn add(&mut self, package: PackageLibrary) {
|
||||
if self.0.is_none() {
|
||||
self.0 = Some(Default::default());
|
||||
}
|
||||
// Later packages override previous ones.
|
||||
self.0.as_mut().unwrap().insert(0, package);
|
||||
}
|
||||
/// Does the specified function hash key exist in the [`PackagesCollection`]?
|
||||
#[allow(dead_code)]
|
||||
pub fn contains_fn(&self, hash: u64) -> bool {
|
||||
if hash == 0 {
|
||||
false
|
||||
} else {
|
||||
self.0
|
||||
.as_ref()
|
||||
.map_or(false, |x| x.iter().any(|p| p.contains_fn(hash, false)))
|
||||
}
|
||||
}
|
||||
/// Get specified function via its hash key.
|
||||
pub fn get_fn(&self, hash: u64) -> Option<&CallableFunction> {
|
||||
if hash == 0 {
|
||||
None
|
||||
} else {
|
||||
self.0
|
||||
.as_ref()
|
||||
.and_then(|x| x.iter().find_map(|p| p.get_fn(hash, false)))
|
||||
}
|
||||
}
|
||||
/// Does the specified [`TypeId`] iterator exist in the [`PackagesCollection`]?
|
||||
#[allow(dead_code)]
|
||||
pub fn contains_iter(&self, id: TypeId) -> bool {
|
||||
self.0
|
||||
.as_ref()
|
||||
.map_or(false, |x| x.iter().any(|p| p.contains_iter(id)))
|
||||
}
|
||||
/// Get the specified [`TypeId`] iterator.
|
||||
pub fn get_iter(&self, id: TypeId) -> Option<IteratorFn> {
|
||||
self.0
|
||||
.as_ref()
|
||||
.and_then(|x| x.iter().find_map(|p| p.get_iter(id)))
|
||||
}
|
||||
/// Get an iterator over all the packages in the [`PackagesCollection`].
|
||||
pub(crate) fn iter(&self) -> impl Iterator<Item = &PackageLibrary> {
|
||||
self.0.iter().flat_map(|p| p.iter())
|
||||
}
|
||||
|
||||
/// Generate signatures for all the functions in the [`PackagesCollection`].
|
||||
pub fn gen_fn_signatures<'a>(&'a self) -> impl Iterator<Item = String> + 'a {
|
||||
self.iter().flat_map(|m| m.gen_fn_signatures())
|
||||
/// ## Deprecated
|
||||
///
|
||||
/// Use `as_shared_module` instead.
|
||||
#[deprecated = "use `as_shared_module` instead"]
|
||||
fn get(&self) -> Shared<Module> {
|
||||
self.as_shared_module()
|
||||
}
|
||||
}
|
||||
|
||||
@ -132,10 +76,10 @@ impl PackagesCollection {
|
||||
macro_rules! def_package {
|
||||
($root:ident : $package:ident : $comment:expr , $lib:ident , $block:stmt) => {
|
||||
#[doc=$comment]
|
||||
pub struct $package($root::packages::PackageLibrary);
|
||||
pub struct $package($root::Shared<$root::Module>);
|
||||
|
||||
impl $root::packages::Package for $package {
|
||||
fn get(&self) -> $root::packages::PackageLibrary {
|
||||
fn as_shared_module(&self) -> $root::Shared<$root::Module> {
|
||||
self.0.clone()
|
||||
}
|
||||
|
||||
|
||||
155
src/parser.rs
155
src/parser.rs
@ -1,8 +1,6 @@
|
||||
//! Main module defining the lexer and parser.
|
||||
|
||||
use crate::ast::{
|
||||
BinaryExpr, CustomExpr, Expr, FnCallExpr, Ident, IdentX, ReturnType, ScriptFnDef, Stmt,
|
||||
};
|
||||
use crate::ast::{BinaryExpr, CustomExpr, Expr, FnCallExpr, Ident, ReturnType, ScriptFnDef, Stmt};
|
||||
use crate::dynamic::{AccessMode, Union};
|
||||
use crate::engine::KEYWORD_THIS;
|
||||
use crate::module::NamespaceRef;
|
||||
@ -703,7 +701,7 @@ fn parse_map_literal(
|
||||
#[cfg(not(feature = "unchecked"))]
|
||||
settings.ensure_level_within_max_limit(state.max_expr_depth)?;
|
||||
|
||||
let mut map: StaticVec<(IdentX, Expr)> = Default::default();
|
||||
let mut map: StaticVec<(Ident, Expr)> = Default::default();
|
||||
|
||||
loop {
|
||||
const MISSING_RBRACE: &str = "to end this object map literal";
|
||||
@ -773,7 +771,8 @@ fn parse_map_literal(
|
||||
}
|
||||
|
||||
let expr = parse_expr(input, state, lib, settings.level_up())?;
|
||||
map.push((IdentX::new(name, pos), expr));
|
||||
let name = state.get_interned_string(name);
|
||||
map.push((Ident { name, pos }, expr));
|
||||
|
||||
match input.peek().unwrap() {
|
||||
(Token::Comma, _) => {
|
||||
@ -970,7 +969,10 @@ fn parse_primary(
|
||||
{
|
||||
state.allow_capture = true;
|
||||
}
|
||||
let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos: settings.pos,
|
||||
};
|
||||
Expr::Variable(Box::new((None, None, 0, var_name_def)))
|
||||
}
|
||||
// Namespace qualification
|
||||
@ -981,20 +983,29 @@ fn parse_primary(
|
||||
{
|
||||
state.allow_capture = true;
|
||||
}
|
||||
let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos: settings.pos,
|
||||
};
|
||||
Expr::Variable(Box::new((None, None, 0, var_name_def)))
|
||||
}
|
||||
// Normal variable access
|
||||
Token::Identifier(s) => {
|
||||
let index = state.access_var(&s, settings.pos);
|
||||
let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos: settings.pos,
|
||||
};
|
||||
Expr::Variable(Box::new((index, None, 0, var_name_def)))
|
||||
}
|
||||
|
||||
// Function call is allowed to have reserved keyword
|
||||
Token::Reserved(s) if *next_token == Token::LeftParen || *next_token == Token::Bang => {
|
||||
if is_keyword_function(&s) {
|
||||
let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos: settings.pos,
|
||||
};
|
||||
Expr::Variable(Box::new((None, None, 0, var_name_def)))
|
||||
} else {
|
||||
return Err(PERR::Reserved(s).into_err(settings.pos));
|
||||
@ -1007,7 +1018,10 @@ fn parse_primary(
|
||||
let msg = format!("'{}' can only be used in functions", s);
|
||||
return Err(LexError::ImproperSymbol(s, msg).into_err(settings.pos));
|
||||
} else {
|
||||
let var_name_def = IdentX::new(state.get_interned_string(s), settings.pos);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos: settings.pos,
|
||||
};
|
||||
Expr::Variable(Box::new((None, None, 0, var_name_def)))
|
||||
}
|
||||
}
|
||||
@ -1067,13 +1081,13 @@ fn parse_primary(
|
||||
.into_err(pos));
|
||||
}
|
||||
|
||||
let (_, modules, _, IdentX { name, pos }) = *x;
|
||||
let (_, modules, _, Ident { name, pos }) = *x;
|
||||
settings.pos = pos;
|
||||
parse_fn_call(input, state, lib, name, true, modules, settings.level_up())?
|
||||
}
|
||||
// Function call
|
||||
(Expr::Variable(x), Token::LeftParen) => {
|
||||
let (_, modules, _, IdentX { name, pos }) = *x;
|
||||
let (_, modules, _, Ident { name, pos }) = *x;
|
||||
settings.pos = pos;
|
||||
parse_fn_call(input, state, lib, name, false, modules, settings.level_up())?
|
||||
}
|
||||
@ -1091,7 +1105,10 @@ fn parse_primary(
|
||||
modules = Some(Box::new(m));
|
||||
}
|
||||
|
||||
let var_name_def = IdentX::new(state.get_interned_string(id2), pos2);
|
||||
let var_name_def = Ident {
|
||||
name: state.get_interned_string(id2),
|
||||
pos: pos2,
|
||||
};
|
||||
Expr::Variable(Box::new((index, modules, 0, var_name_def)))
|
||||
}
|
||||
(Token::Reserved(id2), pos2) if is_valid_identifier(id2.chars()) => {
|
||||
@ -1129,7 +1146,7 @@ fn parse_primary(
|
||||
_ => None,
|
||||
}
|
||||
.map(|x| {
|
||||
let (_, modules, hash, IdentX { name, .. }) = x.as_mut();
|
||||
let (_, modules, hash, Ident { name, .. }) = x.as_mut();
|
||||
let namespace = modules.as_mut().unwrap();
|
||||
|
||||
// Qualifiers + variable name
|
||||
@ -1311,58 +1328,46 @@ fn make_assignment_stmt<'a>(
|
||||
state: &mut ParseState,
|
||||
lhs: Expr,
|
||||
rhs: Expr,
|
||||
pos: Position,
|
||||
op_pos: Position,
|
||||
) -> Result<Stmt, ParseError> {
|
||||
match &lhs {
|
||||
// var (non-indexed) = rhs
|
||||
Expr::Variable(x) if x.0.is_none() => {
|
||||
Ok(Stmt::Assignment(Box::new((lhs, fn_name.into(), rhs)), pos))
|
||||
}
|
||||
Expr::Variable(x) if x.0.is_none() => Ok(Stmt::Assignment(
|
||||
Box::new((lhs, fn_name.into(), rhs)),
|
||||
op_pos,
|
||||
)),
|
||||
// var (indexed) = rhs
|
||||
Expr::Variable(x) => {
|
||||
let (
|
||||
index,
|
||||
_,
|
||||
_,
|
||||
IdentX {
|
||||
name,
|
||||
pos: name_pos,
|
||||
},
|
||||
) = x.as_ref();
|
||||
let (index, _, _, Ident { name, pos }) = x.as_ref();
|
||||
match state.stack[(state.stack.len() - index.unwrap().get())].1 {
|
||||
AccessMode::ReadWrite => {
|
||||
Ok(Stmt::Assignment(Box::new((lhs, fn_name.into(), rhs)), pos))
|
||||
}
|
||||
AccessMode::ReadWrite => Ok(Stmt::Assignment(
|
||||
Box::new((lhs, fn_name.into(), rhs)),
|
||||
op_pos,
|
||||
)),
|
||||
// Constant values cannot be assigned to
|
||||
AccessMode::ReadOnly => {
|
||||
Err(PERR::AssignmentToConstant(name.to_string()).into_err(*name_pos))
|
||||
Err(PERR::AssignmentToConstant(name.to_string()).into_err(*pos))
|
||||
}
|
||||
}
|
||||
}
|
||||
// xxx[???] = rhs, xxx.??? = rhs
|
||||
Expr::Index(x, _) | Expr::Dot(x, _) => match &x.lhs {
|
||||
// var[???] (non-indexed) = rhs, var.??? (non-indexed) = rhs
|
||||
Expr::Variable(x) if x.0.is_none() => {
|
||||
Ok(Stmt::Assignment(Box::new((lhs, fn_name.into(), rhs)), pos))
|
||||
}
|
||||
Expr::Variable(x) if x.0.is_none() => Ok(Stmt::Assignment(
|
||||
Box::new((lhs, fn_name.into(), rhs)),
|
||||
op_pos,
|
||||
)),
|
||||
// var[???] (indexed) = rhs, var.??? (indexed) = rhs
|
||||
Expr::Variable(x) => {
|
||||
let (
|
||||
index,
|
||||
_,
|
||||
_,
|
||||
IdentX {
|
||||
name,
|
||||
pos: name_pos,
|
||||
},
|
||||
) = x.as_ref();
|
||||
let (index, _, _, Ident { name, pos }) = x.as_ref();
|
||||
match state.stack[(state.stack.len() - index.unwrap().get())].1 {
|
||||
AccessMode::ReadWrite => {
|
||||
Ok(Stmt::Assignment(Box::new((lhs, fn_name.into(), rhs)), pos))
|
||||
}
|
||||
AccessMode::ReadWrite => Ok(Stmt::Assignment(
|
||||
Box::new((lhs, fn_name.into(), rhs)),
|
||||
op_pos,
|
||||
)),
|
||||
// Constant values cannot be assigned to
|
||||
AccessMode::ReadOnly => {
|
||||
Err(PERR::AssignmentToConstant(name.to_string()).into_err(*name_pos))
|
||||
Err(PERR::AssignmentToConstant(name.to_string()).into_err(*pos))
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1378,7 +1383,7 @@ fn make_assignment_stmt<'a>(
|
||||
"=".to_string(),
|
||||
"Possibly a typo of '=='?".to_string(),
|
||||
)
|
||||
.into_err(pos)),
|
||||
.into_err(op_pos)),
|
||||
// expr = rhs
|
||||
_ => Err(PERR::AssignmentToInvalidLHS("".to_string()).into_err(lhs.position())),
|
||||
}
|
||||
@ -1883,11 +1888,11 @@ fn parse_custom_syntax(
|
||||
match required_token.as_str() {
|
||||
MARKER_IDENT => match input.next().unwrap() {
|
||||
(Token::Identifier(s), pos) => {
|
||||
let ident = state.get_interned_string(s);
|
||||
let var_name_def = IdentX::new(ident.clone(), pos);
|
||||
keywords.push(Expr::Variable(Box::new((None, None, 0, var_name_def))));
|
||||
segments.push(ident);
|
||||
let name = state.get_interned_string(s);
|
||||
segments.push(name.clone());
|
||||
tokens.push(state.get_interned_string(MARKER_IDENT));
|
||||
let var_name_def = Ident { name, pos };
|
||||
keywords.push(Expr::Variable(Box::new((None, None, 0, var_name_def))));
|
||||
}
|
||||
(Token::Reserved(s), pos) if is_valid_identifier(s.chars()) => {
|
||||
return Err(PERR::Reserved(s).into_err(pos));
|
||||
@ -2208,16 +2213,16 @@ fn parse_let(
|
||||
match var_type {
|
||||
// let name = expr
|
||||
AccessMode::ReadWrite => {
|
||||
let var_name = state.get_interned_string(name.clone());
|
||||
state.stack.push((var_name, AccessMode::ReadWrite));
|
||||
let var_def = IdentX::new(name, pos);
|
||||
let name = state.get_interned_string(name);
|
||||
state.stack.push((name.clone(), AccessMode::ReadWrite));
|
||||
let var_def = Ident { name, pos };
|
||||
Ok(Stmt::Let(Box::new(var_def), init_expr, export, token_pos))
|
||||
}
|
||||
// const name = { expr:constant }
|
||||
AccessMode::ReadOnly => {
|
||||
let var_name = state.get_interned_string(name.clone());
|
||||
state.stack.push((var_name, AccessMode::ReadOnly));
|
||||
let var_def = IdentX::new(name, pos);
|
||||
let name = state.get_interned_string(name);
|
||||
state.stack.push((name.clone(), AccessMode::ReadOnly));
|
||||
let var_def = Ident { name, pos };
|
||||
Ok(Stmt::Const(Box::new(var_def), init_expr, export, token_pos))
|
||||
}
|
||||
}
|
||||
@ -2261,7 +2266,10 @@ fn parse_import(
|
||||
|
||||
Ok(Stmt::Import(
|
||||
expr,
|
||||
Some(Box::new(IdentX::new(name, settings.pos))),
|
||||
Some(Box::new(Ident {
|
||||
name,
|
||||
pos: settings.pos,
|
||||
})),
|
||||
token_pos,
|
||||
))
|
||||
}
|
||||
@ -2310,7 +2318,10 @@ fn parse_export(
|
||||
|
||||
let rename = if match_token(input, Token::As).0 {
|
||||
match input.next().unwrap() {
|
||||
(Token::Identifier(s), pos) => Some(IdentX::new(state.get_interned_string(s), pos)),
|
||||
(Token::Identifier(s), pos) => Some(Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos,
|
||||
}),
|
||||
(Token::Reserved(s), pos) if is_valid_identifier(s.chars()) => {
|
||||
return Err(PERR::Reserved(s).into_err(pos));
|
||||
}
|
||||
@ -2321,7 +2332,13 @@ fn parse_export(
|
||||
None
|
||||
};
|
||||
|
||||
exports.push((IdentX::new(state.get_interned_string(id), id_pos), rename));
|
||||
exports.push((
|
||||
Ident {
|
||||
name: state.get_interned_string(id),
|
||||
pos: id_pos,
|
||||
},
|
||||
rename,
|
||||
));
|
||||
|
||||
match input.peek().unwrap() {
|
||||
(Token::Comma, _) => {
|
||||
@ -2651,7 +2668,10 @@ fn parse_try_catch(
|
||||
// try { body } catch (
|
||||
let var_def = if match_token(input, Token::LeftParen).0 {
|
||||
let id = match input.next().unwrap() {
|
||||
(Token::Identifier(s), pos) => Ident::new(s, pos),
|
||||
(Token::Identifier(s), pos) => Ident {
|
||||
name: state.get_interned_string(s),
|
||||
pos,
|
||||
},
|
||||
(_, pos) => return Err(PERR::VariableExpected.into_err(pos)),
|
||||
};
|
||||
|
||||
@ -2780,7 +2800,7 @@ fn parse_fn(
|
||||
|
||||
/// Creates a curried expression from a list of external variables
|
||||
#[cfg(not(feature = "no_function"))]
|
||||
fn make_curry_from_externals(fn_expr: Expr, externals: StaticVec<IdentX>, pos: Position) -> Expr {
|
||||
fn make_curry_from_externals(fn_expr: Expr, externals: StaticVec<Ident>, pos: Position) -> Expr {
|
||||
if externals.is_empty() {
|
||||
return fn_expr;
|
||||
}
|
||||
@ -2889,13 +2909,16 @@ fn parse_anon_fn(
|
||||
|
||||
// External variables may need to be processed in a consistent order,
|
||||
// so extract them into a list.
|
||||
let externals: StaticVec<IdentX> = {
|
||||
let externals: StaticVec<Ident> = {
|
||||
#[cfg(not(feature = "no_closure"))]
|
||||
{
|
||||
state
|
||||
.externals
|
||||
.iter()
|
||||
.map(|(k, &v)| IdentX::new(k.clone(), v))
|
||||
.map(|(name, &pos)| Ident {
|
||||
name: name.clone(),
|
||||
pos,
|
||||
})
|
||||
.collect()
|
||||
}
|
||||
#[cfg(feature = "no_closure")]
|
||||
@ -3114,7 +3137,7 @@ pub fn map_dynamic_to_expr(value: Dynamic, pos: Position) -> Option<Expr> {
|
||||
Union::Map(map, _) => {
|
||||
let items: Vec<_> = map
|
||||
.into_iter()
|
||||
.map(|(k, v)| (IdentX::new(k, pos), map_dynamic_to_expr(v, pos)))
|
||||
.map(|(name, value)| (Ident { name, pos }, map_dynamic_to_expr(value, pos)))
|
||||
.collect();
|
||||
|
||||
if items.iter().all(|(_, expr)| expr.is_some()) {
|
||||
|
||||
@ -219,17 +219,17 @@ impl Engine {
|
||||
/// Functions from the following sources are included:
|
||||
/// 1) Functions defined in an [`AST`][crate::AST]
|
||||
/// 2) Functions registered into the global namespace
|
||||
/// 3) Functions in registered sub-modules
|
||||
/// 4) Functions in packages (optional)
|
||||
/// 3) Functions in static modules
|
||||
/// 4) Functions in global modules (optional)
|
||||
pub fn gen_fn_metadata_with_ast_to_json(
|
||||
&self,
|
||||
ast: &AST,
|
||||
include_packages: bool,
|
||||
include_global: bool,
|
||||
) -> serde_json::Result<String> {
|
||||
let mut global: ModuleMetadata = Default::default();
|
||||
|
||||
if include_packages {
|
||||
self.packages
|
||||
if include_global {
|
||||
self.global_modules
|
||||
.iter()
|
||||
.flat_map(|m| m.iter_fn().map(|f| f.into()))
|
||||
.for_each(|info| global.functions.push(info));
|
||||
@ -260,9 +260,9 @@ impl Engine {
|
||||
///
|
||||
/// Functions from the following sources are included:
|
||||
/// 1) Functions registered into the global namespace
|
||||
/// 2) Functions in registered sub-modules
|
||||
/// 3) Functions in packages (optional)
|
||||
pub fn gen_fn_metadata_to_json(&self, include_packages: bool) -> serde_json::Result<String> {
|
||||
self.gen_fn_metadata_with_ast_to_json(&Default::default(), include_packages)
|
||||
/// 2) Functions in static modules
|
||||
/// 3) Functions in global modules (optional)
|
||||
pub fn gen_fn_metadata_to_json(&self, include_global: bool) -> serde_json::Result<String> {
|
||||
self.gen_fn_metadata_with_ast_to_json(&Default::default(), include_global)
|
||||
}
|
||||
}
|
||||
|
||||
@ -101,7 +101,7 @@ fn test_for_module_iterator() -> Result<(), Box<EvalAltResult>> {
|
||||
let mut module = Module::new();
|
||||
module.set_sub_module("inner", sub_module);
|
||||
|
||||
engine.register_module("testing", module);
|
||||
engine.register_static_module("testing", module.into());
|
||||
|
||||
let script = r#"
|
||||
let item = testing::inner::new_ts();
|
||||
|
||||
@ -62,7 +62,7 @@ fn test_functions_namespaces() -> Result<(), Box<EvalAltResult>> {
|
||||
let hash = m.set_fn_0("test", || Ok(999 as INT));
|
||||
m.update_fn_namespace(hash, FnNamespace::Global);
|
||||
|
||||
engine.register_module("hello", m);
|
||||
engine.register_static_module("hello", m.into());
|
||||
|
||||
assert_eq!(engine.eval::<INT>("test()")?, 999);
|
||||
assert_eq!(engine.eval::<INT>("fn test() { 123 } test()")?, 123);
|
||||
|
||||
@ -44,7 +44,7 @@ fn test_module_sub_module() -> Result<(), Box<EvalAltResult>> {
|
||||
assert_eq!(m2.get_var_value::<INT>("answer").unwrap(), 41);
|
||||
|
||||
let mut engine = Engine::new();
|
||||
engine.register_module("question", module);
|
||||
engine.register_static_module("question", module.into());
|
||||
|
||||
assert_eq!(engine.eval::<INT>("question::MYSTIC_NUMBER")?, 42);
|
||||
assert!(engine.eval::<INT>("MYSTIC_NUMBER").is_err());
|
||||
|
||||
@ -55,7 +55,7 @@ fn test_optimizer_parse() -> Result<(), Box<EvalAltResult>> {
|
||||
|
||||
let ast = engine.compile("{ const DECISION = false; if DECISION { 42 } else { 123 } }")?;
|
||||
|
||||
assert!(format!("{:?}", ast).starts_with(r#"AST { source: None, statements: [Block([Const(IdentX { name: "DECISION", pos: 1:9 }, Some(Unit(0:0)), false, 1:3), Expr(IntegerConstant(123, 1:53))], 1:1)]"#));
|
||||
assert!(format!("{:?}", ast).starts_with(r#"AST { source: None, statements: [Block([Const(Ident { name: "DECISION", pos: 1:9 }, Some(Unit(0:0)), false, 1:3), Expr(IntegerConstant(123, 1:53))], 1:1)]"#));
|
||||
|
||||
let ast = engine.compile("if 1 == 2 { 42 }")?;
|
||||
|
||||
|
||||
@ -11,8 +11,8 @@ fn test_packages() -> Result<(), Box<EvalAltResult>> {
|
||||
// Create a raw Engine - extremely cheap.
|
||||
let mut engine = Engine::new_raw();
|
||||
|
||||
// Load packages - cheap.
|
||||
engine.load_package(std_pkg.get());
|
||||
// Register packages - cheap.
|
||||
engine.register_global_module(std_pkg.as_shared_module());
|
||||
|
||||
// Create custom scope - cheap.
|
||||
let mut scope = Scope::new();
|
||||
@ -37,7 +37,7 @@ fn test_packages_with_script() -> Result<(), Box<EvalAltResult>> {
|
||||
let ast = engine.compile("fn foo(x) { x + 1 } fn bar(x) { foo(x) + 1 }")?;
|
||||
|
||||
let module = Module::eval_ast_as_new(Scope::new(), &ast, &engine)?;
|
||||
engine.load_package(module);
|
||||
engine.register_global_module(module.into());
|
||||
assert_eq!(engine.eval::<INT>("foo(41)")?, 42);
|
||||
assert_eq!(engine.eval::<INT>("bar(40)")?, 42);
|
||||
|
||||
|
||||
@ -77,7 +77,7 @@ fn test_plugins_package() -> Result<(), Box<EvalAltResult>> {
|
||||
|
||||
let mut m = Module::new();
|
||||
combine_with_exported_module!(&mut m, "test", test::special_array_package);
|
||||
engine.load_package(m);
|
||||
engine.register_global_module(m.into());
|
||||
|
||||
reg_functions!(engine += greet::single(INT, bool, char));
|
||||
|
||||
@ -95,7 +95,7 @@ fn test_plugins_package() -> Result<(), Box<EvalAltResult>> {
|
||||
"6 kitties"
|
||||
);
|
||||
|
||||
engine.register_module("test", exported_module!(test::special_array_package));
|
||||
engine.register_static_module("test", exported_module!(test::special_array_package).into());
|
||||
|
||||
assert_eq!(engine.eval::<INT>("test::MYSTIC_NUMBER")?, 42);
|
||||
|
||||
|
||||
@ -52,7 +52,7 @@ fn test_generated_ops() -> Result<(), Box<EvalAltResult>> {
|
||||
register_in_bulk!(m, add, i8, i16, i32, i64);
|
||||
register_in_bulk!(m, mul, i8, i16, i32, i64);
|
||||
|
||||
engine.load_package(m);
|
||||
engine.register_global_module(m.into());
|
||||
|
||||
#[cfg(feature = "only_i32")]
|
||||
assert_eq!(engine.eval::<INT>("let a = 0; add_i32(a, 1)")?, 1);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user