1928 lines
90 KiB
Markdown
1928 lines
90 KiB
Markdown
Rhai Release Notes
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==================
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Version 1.13.0
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==============
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Bug fixes
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---------
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* `map` and `filter` for arrays are marked `pure`. Warnings are added to the documentation of pure array methods that take `this` closures.
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Version 1.12.0
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==============
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Bug fixes
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---------
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* Integer numbers that are too large to deserialize into `INT` now fall back to `Decimal` or `FLOAT` instead of silently truncating.
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* Parsing deeply-nested closures (e.g. `||{||{||{||{||{||{||{...}}}}}}}`) no longer panics but will be confined to the nesting limit.
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* Closures containing a single expression are now allowed in `Engine::eval_expression` etc.
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* Strings interpolation now works under `Engine::new_raw` without any standard package.
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* `Fn` now throws an error if the name is a reserved keyword as it cannot possibly map to such a function. This also disallows creating function pointers to custom operators which are defined as disabled keywords (a mouthful), but such custom operators are designed primarily to be used as operators.
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Breaking API changes
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--------------------
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* The callback for initializing a debugger instance has changed to `Fn(&Engine, Debugger) -> Debugger`. This allows more control over the initial setup of the debugger.
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* The internal macro `reify!` is no longer available publicly.
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Deprecated API's
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----------------
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* `Module::with_capacity` is deprecated.
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* The internal method `Engine::eval_statements_raw` is deprecated.
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* Array overloaded methods that take function names (as string) are deprecated in favor of using the `Fn("...")` call.
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Speed improvements
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------------------
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* The function registration mechanism is revamped to take advantage of constant generics, among others, to omit checking code where possible. This yields a 10-20% speed improvements on certain real-life, function-call-heavy workloads.
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* Functions taking function pointers as parameters, usually called with closures, now run faster because a link to the anonymous function (generated by the closure) is stored together with the function pointer itself. This allows short-circuiting the function lookup step.
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Net features
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------------
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### First class functions (sort of)
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* A function pointer created via a closure definition now links to the particular anonymous function itself.
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* This avoids a potentially expensive function lookup when the function pointer is called, speeding up closures.
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* Closures now also encapsulate their defining environment, so function pointers can now be freely `export`ed from modules!
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### `!in`
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* A new operator `!in` is added which maps to `!(... in ...)`.
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### `Engine::call_fn_with_options`
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* `Engine::call_fn_raw` is deprecated in favor of `Engine::call_fn_with_options` which allows setting options for the function call.
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* The options are for future-proofing the API.
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* In this version, it gains the ability to set the value of the _custom state_ (accessible via `NativeCallContext::tag`) for a function evaluation, overriding `Engine::set_default_tag`.
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### Compact a script for compression
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* `Engine::compact_script` is added which takes a valid script (it still returns parsing errors) and returns a _compacted_ version of the script with all insignificant whitespaces and all comments removed.
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* A compact script compresses better than one with liberal whitespaces and comments.
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* Unlike some uglifiers or minifiers, `Engine::compact_script` does not optimize the script in any way, nor does it rename variables.
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### Enhanced array API
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* Array methods that take a function pointer, usually a closure (e.g. `map`, `filter`, `index_of`, `reduce` etc.), can now bind the array element to `this` when calling a closure.
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* This vastly improves performance when working with arrays of large types (e.g. object maps) by avoiding unnecessary cloning.
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* `find` and `find_map` are added for arrays.
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* `for_each` is also added for arrays, allowing a closure to mutate array elements (bound to `this`) in turn.
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Enhancements
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------------
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* Optimizations have been done to key data structures to minimize size and creation time, which involves turning rarely-used fields into `Option<Box<T>>`. This resulted in some speed improvements.
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* `CallableFunction` is exported under `internals`.
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* The `TypeBuilder` type and `CustomType` trait are no longer marked as volatile.
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* `FuncArgs` is also implemented for arrays.
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* `Engine::set_XXX` API can now be chained.
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* `EvalContext::scope_mut` now returns `&mut Scope` instead of `&mut &mut Scope`.
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* Line-style doc-comments are now merged into a single string to avoid creating many strings. Block-style doc-comments continue to be independent strings.
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* Block-style doc-comments are now "un-indented" for better formatting.
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* Doc-comments on plugin modules are now captured in the module's `doc` field.
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* Expression nesting levels is refined such that it grows less excessively for common patterns.
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* The traits `Index` and `IndexMut` are added to `FnPtr`.
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* `FnPtr::iter_curry` and `FnPtr::iter_curry_mut` are added.
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* `Dynamic::deep_scan` is added to recursively scan for `Dynamic` values.
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* `>>` and `<<` operators on integers no longer throw errors when the number of bits to shift is out of bounds. Shifting by a negative number of bits simply reverses the shift direction.
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Version 1.11.0
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==============
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Speed improvements
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------------------
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* Due to a code refactor, built-in operators for standard types now run even faster, in certain cases by 20-30%.
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Bug fixes
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---------
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* `Engine::parse_json` now returns an error on unquoted keys to be consistent with JSON specifications.
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* `import` statements inside `eval` no longer cause errors in subsequent code.
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* Functions marked `global` in `import`ed modules with no alias names now work properly.
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* Incorrect loop optimizations that are too aggressive (e.g. unrolling a `do { ... } until true` with a `break` statement inside) and cause crashes are removed.
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* `Dynamic::is` now works properly for shared values.
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Breaking changes
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----------------
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* `NativeCallContext::new` is completely deprecated and unimplemented (always panics) in favor of new API's.
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New features
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------------
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### `Dynamic` detection API
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* New methods are added to `Dynamic` in the form of `is_XXX()` where `XXX` is a type (e.g. `is_int`, `is_unit`, `is_bool`, `is_array`).
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* This new API is to make it easier to detect the data type, instead of having to call `is::<XXX>()`.
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### Loop expressions
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* Loops (such as `loop`, `do`, `while` and `for`) can now act as _expressions_, with the `break` statement returning an optional value.
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* Normal loops return `()` as the value.
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* Loop expressions can be enabled/disabled via `Engine::set_allow_loop_expressions`
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### Static hashing
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* It is now possible to specify a fixed _seed_ for use with the `ahash` hasher, via a static function `rhai::config::hashing::set_ahash_seed` or an environment variable (`RHAI_AHASH_SEED`), in order to force static (i.e. deterministic) hashes for function signatures.
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* This is necessary when using Rhai across shared-library boundaries.
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* A build script is used to extract the environment variable (`RHAI_AHASH_SEED`, if any) and splice it into the source code before compilation.
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### `no_time` for no timestamps
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* A new feature, `no_time`, is added to disable support for timestamps.
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* This may be necessary when building for architectures without time support, such as raw WASM.
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### Serializable `Scope`
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* `Scope` is now serializable and deserializable via `serde`.
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### Store and recreate `NativeCallContext`
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* A convenient API is added to store a `NativeCallContext` into a new `NativeCallContextStore` type.
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* This allows a `NativeCallContext` to be stored and recreated later on.
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### Call native Rust functions in `NativeCallContext`
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* `NativeCallContext::call_native_fn` is added to call registered native Rust functions only.
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* `NativeCallContext::call_native_fn_raw` is added as the advanced version.
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* This is often desirable as Rust functions typically do not want a similar-named scripted function to hijack the process -- which will cause brittleness.
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### Custom syntax improvements
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* The look-ahead symbol for custom syntax now renders a string literal in quotes (instead of the generic term `string`).
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* This facilitates more accurate parsing by separating strings and identifiers.
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### Limits API
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* Methods returning maximum limits (e.g. `Engine::max_string_len`) are now available even under `unchecked`.
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* This helps avoid the proliferation of unnecessary feature flags in third-party library code.
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Enhancements
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------------
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* `parse_json` function is added to parse a JSON string into an object map.
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* `Error::ErrorNonPureMethodCallOnConstant` is added which is raised when a non-pure method is called on a constant value.
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Version 1.10.1
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==============
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Bug fixes
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---------
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* Compiling on 32-bit architectures no longer cause a compilation error.
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* Fix type-size test for 32-bit architectures without the `decimal` feature.
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Custom syntax with state
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------------------------
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* [`Engine::register_custom_syntax_with_state_raw`] is added. The custom syntax parser and implementation functions take on an additional parameter that holds a user-defined custom _state_ which should substantially simplify writing some custom parsers.
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* [`Engine::register_custom_syntax_raw`] is deprecated.
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Version 1.10.0
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==============
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This version introduces _Fast Operators_ mode, which is turned on by default but can be disabled via
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a new options API: `Engine::set_fast_operators`.
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_Fast Operators_ mode assumes that none of Rhai's built-in operators for standard data types are
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overloaded by user-registered functions. In the vast majority of cases this should be so (really,
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who overloads the `+` operator for integers anyway?).
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This assumption allows the `Engine` to avoid checking for overloads for every single operator call.
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This usually results in substantial speed improvements, especially for expressions.
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Minimum Rust Version
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--------------------
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The minimum Rust version is now `1.61.0` in order to use some `const` generics.
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Bug fixes
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---------
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* API for registering property getters/setters and indexers to an `Engine` now works with functions that take a first parameter of `NativeCallContext`.
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* Missing API function `Module::set_getter_setter_fn` is added.
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* To avoid subtle errors, simple optimization is used for `rhai-run`; previous it was full optimization.
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Deprecated API
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--------------
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* All versions of the `Engine::register_XXX_result` API that register a function returning `Result<T, Box<EvalAltResult>>` are now deprecated. The regular, non-`result` versions handle all functions correctly.
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New features
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------------
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### Fast operators
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* A new option `Engine::fast_operators` is introduced (default to `true`) to enable/disable _Fast Operators_ mode.
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### Fallible type iterators
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* For very special needs, the ability to register fallible type iterators is added.
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### Expressions
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* `if`-expressions are allowed in `Engine::eval_expression` and `Engine::compile_expression` provided that both statement blocks each contain at most a single expression.
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* `switch`-expressions are allowed in `Engine::eval_expression` and `Engine::compile_expression` provided that match actions are expressions only.
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Enhancements
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------------
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* `is_empty` method is added to arrays, BLOB's, object maps, strings and ranges.
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* `StaticModuleResolver` now stores the path in the module's `id` field.
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* `Engine::module_resolver` is added to grant access to the `Engine`'s module resolver.
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* Constants and variables now have types in generated definition files.
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Version 1.9.1
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=============
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This is a bug-fix version that fixes a bug.
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Accessing properties in _Strict Variables Mode_ no longer generates a _variable not found_ error.
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Version 1.9.0
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=============
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The minimum Rust version is now `1.60.0` in order to use the `dep:` syntax for dependencies.
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Bug fixes
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---------
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* `switch` cases with conditions that evaluate to constant `()` no longer optimize to `false` (should raise a type error during runtime).
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* Fixes concatenation of BLOB's and strings, where the BLOB's should be interpreted as UTF-8 encoded strings.
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* Capturing an unknown variable in a closure no longer panics.
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* Fixes panic in interpolated strings with constant expressions.
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* Using `call_fn_raw` on a function without evaluating the AST no longer panics on namespace-qualified function calls due to `import` statements not run.
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* Some reserved tokens (such as "?", "++") cannot be used in custom syntax; this is now fixed.
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Breaking changes
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----------------
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* The first closure passed to `Engine::register_debugger` now takes a single parameter which is a reference to the current `Engine`.
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New features
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------------
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### New feature flags
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* A new feature flag, `std`, which is enabled by default, is added due to requirements from dependency crates.
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* A new feature flag, `no_custom_syntax`, is added to remove custom syntax support from Rhai for applications that do not require it (which should be most).
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### Module documentation
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* Comment lines beginning with `//!` (requires the `metadata` feature) are now collected as the script file's _module documentation_.
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* `AST` and `Module` have methods to access and manipulate documentation.
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### Output definition files
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* An API is added to automatically generate definition files from a fully-configured `Engine`, for use with the Rhai Language Server.
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### Short-hand to function pointers
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* Using a script-defined function's name (in place of a variable) implicitly creates a function pointer to the function.
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### Top-level functions
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* Crate-level functions `rhai::eval`, `rhai::run`, `rhai::eval_file`, `rhai::run_file` are added as convenient wrappers.
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### CustomType trait and TypeBuilder
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* A new volatile API, `Engine::build_type`, enables registration of the entire API of a custom type in one go, provided that the custom type implements the `CustomType` trait (which uses `TypeBuilder` to register the API functions).
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### Simpler Package API
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* It is now easier to register packages via the `Package::register_into_engine` and `Package::register_into_engine_as` API.
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* Defining a custom package with base packages is also much easier with a new syntax - put the new base packages after a colon.
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Enhancements
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------------
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### `switch` statement
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* `switch` cases can now include multiple values separated by `|`.
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* Duplicated `switch` cases are now allowed.
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* The error `ParseErrorType::DuplicatedSwitchCase` is deprecated.
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* Ranges in `switch` statements that are small (currently no more than 16 items) are unrolled if possible.
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### Others
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* `EvalContext::eval_expression_tree_raw` and `Expression::eval_with_context_raw` are added to allow for not rewinding the `Scope` at the end of a statements block.
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* A new `range` function variant that takes an exclusive range with a step.
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* `as_string` is added to BLOB's to convert it into a string by interpreting it as a UTF-8 byte stream.
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* `FnAccess::is_private`, `FnAccess::is_public`, `FnNamespace::is_module_namespace` and `FnNameSpace::is_global_namespace` are added for convenience.
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* `Iterator<Item=T>` type for functions metadata is simplified to `Iterator<T>`.
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* `Scope::remove` is added to remove a variable from a `Scope`, returning its value.
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* The code base is cleaner by running it through Clippy.
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* `ParseError::err_type` and `ParseError::position` are added for convenience.
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* The source of an `AST` compiled from a script file is set to the file's path.
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* `|>` and `<|` are now reserved symbols.
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Version 1.8.0
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=============
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Bug fixes
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---------
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* Self-contained `AST` now works properly with `Engine::call_fn`.
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* Missing `to_int` from `Decimal` is added.
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* Parsing of index expressions is relaxed and many cases no longer result in an index-type error to allow for custom indexers.
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* Merging or combining a self-contained `AST` into another `AST` now works properly.
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* Plugin modules/functions no longer generate errors under `#![deny(missing_docs)]`.
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* Calling a property on a function call that returns a shared value no longer causes an error.
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* _Strict Variables Mode_ now checks for module namespaces within functions as well.
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* Module defined via `Engine::register_static_module` are now checked in _Strict Variables Mode_.
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Reserved Symbols
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----------------
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* `?`, `??`, `?.`, `?[` and `!.` are now reserved symbols.
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Deprecated API's
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----------------
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* `FnPtr::num_curried` is deprecated in favor of `FnPtr::curry().len()`.
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New features
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------------
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* The _Elvis operators_ (`?.` and `?[`) are now supported for property access, method calls and indexing.
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* The _null-coalescing operator_ (`??`) is now supported to short-circuit `()` values.
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Enhancements
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------------
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* Indexing and property access are now faster.
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* `EvalAltResult::IndexNotFound` is added to aid in raising errors for indexers.
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* `Engine::def_tag`, `Engine::def_tag_mut` and `Engine::set_tag` are added to manage a default value for the custom evaluation state, accessible via `EvalState::tag()` (which is the same as `NativeCallContext::tag()`).
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* Originally, the debugger's custom state uses the same state as `EvalState::tag()` (which is the same as `NativeCallContext::tag()`). It is now split into its own variable accessible under `Debugger::state()`.
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* Non-borrowed string keys can now be deserialized for object maps via `serde`.
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* `Scope::get` is added to get a reference to a variable's value.
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* Variable resolvers can now return a _shared_ value which can be mutated.
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Version 1.7.0
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=============
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Bug fixes
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---------
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* Compound assignments now work properly with indexers.
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* Cloning a `Scope` no longer turns all constants to mutable.
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Script-breaking changes
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-----------------------
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* _Strict Variables Mode_ no longer returns an error when an undeclared variable matches a variable/constant in the provided external `Scope`.
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Potentially breaking API changes
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--------------------------------
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* The `Engine::on_var` and `Engine::on_parse_token` API's are now marked unstable/volatile.
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* The closures passed to `Engine::on_var`, `Engine::on_def_var` and `Engine::register_debugger` take `EvalContext` instead of `&EvalContext` or `&mut EvalContext`.
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* The following enum's are marked `non_exhaustive`: `AccessMode`, `FnAccess`, `FnNamespace`, `FnMetadata`, `OptimizationLevel`
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New API
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-------
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* `Module::eval_ast_as_new_raw` is made public as a low-level API.
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* `format_map_as_json` is provided globally, which is the same as `to_json` for object maps.
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* `Engine::call_fn_raw_raw` is added to add speed to repeated function calls.
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* `Engine::eval_statements_raw` is added to evaluate a sequence of statements.
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New features
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------------
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* A custom state is provided that is persistent during the entire evaluation run. This custom state is a `Dynamic`, which can hold any data, and can be accessed by the host via `EvalContext::tag`, `EvalContext::tag_mut`, `NativeCallContext::tag` and `GlobalRuntimeState.tag`.
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Enhancements
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------------
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* Improper `switch` case condition syntax is now caught at parse time.
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* `Engine::parse_json` now natively handles nested JSON inputs (using a token remap filter) without needing to replace `{` with `#{`.
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* `to_json` is added to object maps to cheaply convert it to JSON format (`()` is mapped to `null`, all other data types must be supported by JSON)
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* `FileModuleResolver` now accepts a custom `Scope` to provide constants for optimization.
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* New variants, `Start` and `End`, are added to `DebuggerEvent` triggered at the start/end of script evaluation.
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Version 1.6.1
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=============
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Bug fixes
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---------
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* Functions with `Dynamic` parameters now work in qualified calls from `import`ed modules.
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* `rhai-repl` now compiles with the new patch version of `rustyline`.
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* `rhai_codegen` dependency is now explicitly `1.4` or higher.
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Script-breaking changes
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-----------------------
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* `split` now splits a string by whitespaces instead of splitting it into individual characters. This is more in line with common practices.
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* A new function `to_chars` for strings is added to split the string into individual characters.
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Enhancements
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------------
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* Strings are now directly iterable (via `for .. in`) yielding individual characters.
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Version 1.6.0
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=============
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This version, in particular, fixes a plugin macro hygiene error for the nightly compiler:
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```text
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error[E0425]: cannot find value `args` in this scope
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```
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Compiler version
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----------------
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* Minimum compiler version is now `1.57` due to [`smartstring`](https://crates.io/crates/smartstring) dependency.
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Bug fixes
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---------
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* Fixed macro hygiene error with nightly compiler.
|
|
* Invalid property or method access such as `a.b::c.d` or `a.b::func()` no longer panics but properly returns a syntax error.
|
|
* `Scope::is_constant` now returns the correct value.
|
|
* Exporting a variable that contains a local function pointer (including anonymous function or closure) now raises a runtime error.
|
|
* Full optimization is now skipped for method calls.
|
|
|
|
New features
|
|
------------
|
|
|
|
* [Type aliases](https://doc.rust-lang.org/reference/items/type-aliases.html) in plugin modules are now used as friendly names for custom types. This makes plugin modules more self-contained when they are used to define a custom type's API.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Variable definitions are optimized so that shadowed variables are reused as much as possible to reduce memory consumption.
|
|
* `FnAccess` and `FnNamespace` now implement `Ord` and `PartialOrd`.
|
|
* The `event_handler_map` example is enhanced to prevent shadowing of the state object map.
|
|
* Separation of constants in function calls is removed as its performance benefit is dubious.
|
|
* A function `sleep` is added to block the current thread by a specified number of seconds.
|
|
* `Scope::set_alias` is added to export a variable under a particular alias name.
|
|
* `starts_with` and `ends_with` are added for strings.
|
|
* Variables in modules registered via `register_global_module` can now be accessed in the global namespace.
|
|
* `Dynamic::into_read_only` is added to convert a `Dynamic` value into constant.
|
|
* `Module` now holds a collection of custom types with an API.
|
|
|
|
|
|
Version 1.5.0
|
|
=============
|
|
|
|
This version adds a debugging interface, which can be used to integrate a debugger.
|
|
|
|
Based on popular demand, an option is added to throw exceptions when invalid properties are accessed on object maps (default is to return `()`).
|
|
|
|
Also based on popular demand, the `REPL` tool now uses a slightly-enhanced version of [`rustyline`](https://crates.io/crates/rustyline) for line editing and history.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* In `Scope::clone_visible`, constants are now properly cloned as constants.
|
|
* Variables introduced inside `try` blocks are now properly cleaned up upon an exception.
|
|
* Off-by-one error in character positions after a comment line is now fixed.
|
|
* Globally-defined constants are now encapsulated correctly inside a loaded module and no longer spill across call boundaries.
|
|
* Type names display is fixed.
|
|
* Exceptions thrown inside function calls now unwrap correctly when `catch`-ed.
|
|
* Error messages for certain invalid property accesses are fixed.
|
|
|
|
Script-breaking changes
|
|
-----------------------
|
|
|
|
* For consistency with the `import` statement, the `export` statement no longer exports multiple variables.
|
|
* Appending a BLOB to a string (via `+`, `+=`, `append` or string interpolation) now treats the BLOB as a UTF-8 encoded string.
|
|
* Appending a string/character to a BLOB (via `+=` or `append`) now adds the string/character as a UTF-8 encoded byte stream.
|
|
|
|
New features
|
|
------------
|
|
|
|
* A debugging interface is added.
|
|
* A new bin tool, `rhai-dbg` (aka _The Rhai Debugger_), is added to showcase the debugging interface.
|
|
* A new package, `DebuggingPackage`, is added which contains the `back_trace` function to get the current call stack anywhere in a script.
|
|
* `Engine::set_fail_on_invalid_map_property` is added to control whether to raise an error (new `EvalAltResult::ErrorPropertyNotFound`) when invalid properties are accessed on object maps.
|
|
* `Engine::set_allow_shadowing` is added to allow/disallow variables _shadowing_, with new errors `EvalAltResult::ErrorVariableExists` and `ParseErrorType::VariableExists`.
|
|
* `Engine::on_def_var` allows registering a closure which can decide whether a variable definition is allow to continue, during compilation or runtime, or should fail with an error (`ParseErrorType::ForbiddenVariable` or `EvalAltResult::ErrorForbiddenVariable`).
|
|
* A new syntax for defining custom packages is introduced that removes the need to specify the Rhai crate name (internally uses the `$crate` meta variable).
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Default features for dependencies (such as `ahash/std` and `num-traits/std`) are no longer required.
|
|
* The `no_module` feature now eliminates large sections of code via feature gates.
|
|
* Debug display of `AST` is improved.
|
|
* `NativeCallContext::call_level()` is added to give the current nesting level of function calls.
|
|
* A new feature, `bin-features`, pulls in all the required features for `bin` tools.
|
|
* `AST` position display is improved:
|
|
* `Expr::start_position` is added to give the beginning of the expression (not the operator's position).
|
|
* `StmtBlock` and `Stmt::Block` now keep the position of the closing `}` as well.
|
|
* `EvalAltResult::unwrap_inner` is added to access the base error inside multiple layers of wrappings (e.g. `EvalAltResult::ErrorInFunction`).
|
|
* Yet another new syntax is introduced for `def_package!` that further simplifies the old syntax.
|
|
* A new method `to_blob` is added to convert a string into a BLOB as UTF-8 encoded bytes.
|
|
* A new method `to_array` is added to convert a BLOB into array of integers.
|
|
|
|
REPL tool changes
|
|
-----------------
|
|
|
|
The REPL bin tool, `rhai-rpl`, has been enhanced.
|
|
|
|
### Build changes
|
|
|
|
* The `rustyline` feature is now required in order to build `rhai-repl`.
|
|
* Therefore, `rhai-repl` is no longer automatically built when using a simple `cargo build` with default features.
|
|
|
|
### Line editor
|
|
|
|
* `rhai-repl` now uses a modified version of [`rustyline`](https://crates.io/crates/rustyline) as a line editor with history.
|
|
* Ctrl-Enter can now be used to enter multiple lines without having to attach the `\` continuation character the end of each line.
|
|
* Bracketed paste is supported, even on Windows (version 10 or above), so pasting code directly into `rhai-repl` is made much more convenient.
|
|
|
|
### New commands
|
|
|
|
* `strict` to turn on/off _Strict Variables Mode_.
|
|
* `optimize` to turn on/off script optimization.
|
|
* `history` to print lines history.
|
|
* `!!`, `!`_num_, `!`_text_ and `!?`_text_ to recall a history line.
|
|
* `keys` to print all key bindings.
|
|
|
|
|
|
Version 1.4.1
|
|
=============
|
|
|
|
This is primarily a bug-fix version which fixes a large number of bugs.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Expressions such as `x = x + 1` no longer panics.
|
|
* Padding arrays with another array via `pad` no longer loops indefinitely.
|
|
* `chop` for arrays and BLOB's now works properly.
|
|
* `set_bit` for bit-flags with negative index now works correctly.
|
|
* Misnamed `params` field `name` in the JSON output of `Engine::gen_fn_metadata_to_json` is fixed (was incorrectly named `type`).
|
|
* Fixes a potential `unsafe` violation in `for` loop.
|
|
* Missing `to_hex`, `to_octal` and `to_binary` for `i128` and `u128` are added.
|
|
* `remove` for arrays and BLOB's now treat negative index correctly.
|
|
* `parse_int` now works properly for negative numbers.
|
|
* `Engine::gen_fn_signatures` now generates signatures for external packages registered via `Engine::register_global_module`.
|
|
* `\r\n` pairs are now recognized correctly for doc-comments.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Formatting of return types in functions metadata info is improved.
|
|
* Use `SmartString` for `Scope` variable names and remove `unsafe` lifetime casting.
|
|
* Functions in the standard library now have doc-comments (which can be obtained via `Engine::gen_fn_metadata_to_json`).
|
|
* `get` and `set` methods are added to arrays, BLOB's, object maps and strings.
|
|
|
|
|
|
Version 1.4.0
|
|
=============
|
|
|
|
This version adds support for integer _ranges_ via the `..` and `..=` operators.
|
|
Many standard API's are extended with range parameters where appropriate.
|
|
|
|
Script-breaking changes
|
|
-----------------------
|
|
|
|
* `is` is (pun intended) now a reserved keyword to prepare for possible future type checking expressions (e.g. `x is "string"`).
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `LogicPackage` is removed from `CorePackage`.
|
|
* Bit-field functions are moved into a new `BitFieldPackage` (used to be in `LogicPackage`) which makes more sense.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Custom syntax now works properly inside binary expressions and with method calls.
|
|
* Hex numbers with the high-bit set now parse correctly into negative integer numbers.
|
|
* Constructing a literal array or object map now checks for size limits for each item instead of at the very end when it is already too late.
|
|
* Non-`INT` integer types are now treated exactly as custom types under `only_i64` and `only_i32`.
|
|
* Calling `pad` on an array now checks for total size over limit after each item added.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Added support for integer _ranges_ via the `..` and `..=` operators.
|
|
* Added `EvalAltResult::ErrorCustomSyntax` to catch errors in custom syntax, which should not happen unless an `AST` is compiled on one `Engine` but evaluated on another unrelated `Engine`.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* `BLOB`'s are refined to display in a more compact hex format.
|
|
* A new syntax is introduced for `def_package!` that will replace the old syntax in future versions.
|
|
* Added `NativeCallContext::call_fn` to easily call a function.
|
|
* Doc-comments on plugin module functions are extracted into the functions' metadata.
|
|
|
|
Deprecated API's
|
|
----------------
|
|
|
|
* `Expression::get_variable_name` is deprecated in favor of the new `Expression::get_string_value`.
|
|
* The old syntax of `def_package!` is deprecated in favor of the new syntax.
|
|
|
|
|
|
Version 1.3.0
|
|
=============
|
|
|
|
This version adds native support for `BLOB`'s (byte arrays), as well as a number of configuration
|
|
settings to fine-tun language features.
|
|
|
|
Compiler requirement
|
|
--------------------
|
|
|
|
* Minimum compiler version is now 1.51.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `from_dynamic` now supports deserializing `Option`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `BLOB` (essentially a byte array) is added as a supported primitive value type parallel to arrays.
|
|
* New options for `Engine` which allows disabling `if`-expressions, `switch`-expressions, statement expressions, anonymous functions and/or looping (i.e. `while`, `loop`, `do` and `for` statements):
|
|
* `Engine::set_allow_if_expression`
|
|
* `Engine::set_allow_switch_expression`
|
|
* `Engine::set_allow_statement_expression`
|
|
* `Engine::set_allow_anonymous_fn`
|
|
* `Engine::set_allow_looping`
|
|
* New _strict variables_ mode for `Engine` (enabled via `Engine::set_strict_variables`) to throw parse errors on undefined variable usage. Two new parse error variants, `ParseErrorType::VariableNotFound` and `ParseErrorType::ModuleNotFound`, are added.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Two double quotes (`""`) in a string literal now maps to `"`; two back-ticks (``` `` ```) in a literal string now maps to `` ` ``.
|
|
* Added `Engine::register_type_with_name_raw` to register a custom type based on a fully-qualified type path.
|
|
* Added `into_array` and `into_typed_array` for `Dynamic`.
|
|
* Added `FnPtr::call` and `FnPtr::call_within_context` to simplify calling a function pointer.
|
|
* A function's hashes are included in its JSON metadata to assist in debugging. Each function's `baseHash` field in the JSON object should map directly to the pre-calculated hash in the function call.
|
|
* `Expression` now derefs to `Expr`.
|
|
|
|
Deprecated and Gated API's
|
|
--------------------------
|
|
|
|
* `NativeCallContext::new` is deprecated because it is simpler to call a function pointer via `FnPtr::call`.
|
|
* `AST::merge_filtered` and `AST::combine_filtered` are no longer exported under `no_function`.
|
|
* `AST::new` and `AST::new_with_source` are moved under `internals`.
|
|
* `FnPtr::call_dynamic` is deprecated in favor of `FnPtr::call_raw`.
|
|
|
|
|
|
Version 1.2.1
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Array methods (such as `map`) taking a closure with captures as argument now works properly.
|
|
|
|
|
|
Version 1.2.0
|
|
=============
|
|
|
|
Bug fixes (potentially script-breaking)
|
|
--------------------------------------
|
|
|
|
* As originally intended, function calls with a bang (`!`) now operates directly on the caller's scope, allowing variables inside the scope to be mutated.
|
|
* As originally intended, `Engine::XXX_with_scope` API's now properly propagate constants within the provided scope also to _functions_ in the script.
|
|
* Printing of integral floating-point numbers is fixed (used to only prints `0.0`).
|
|
* `func!()` calls now work properly under `no_closure`.
|
|
* Fixed parsing of unary negation such that expressions like `if foo { ... } -x` parses correctly.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `#[cfg(...)]` attributes can now be put directly on plugin functions or function defined in a plugin module.
|
|
* A custom syntax parser can now return a symbol starting with `$$` to inform the implementation function which syntax variant was actually parsed.
|
|
* `AST::iter_literal_variables` is added to extract all top-level literal constant/variable definitions from a script without running it.
|
|
* `Engine::call_fn_dynamic` is deprecated and `Engine::call_fn_raw` is added which allows keeping new variables in the custom scope.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Array methods now avoid cloning as much as possible (although most predicates will involve cloning anyway if passed a closure).
|
|
* Array methods that take function pointers (e.g. closures) now optionally take the function name as a string.
|
|
* Array adds the `dedup` method.
|
|
* Array adds a `sort` method with no parameters which sorts homogeneous arrays of built-in comparable types (e.g. `INT`).
|
|
* Inlining is disabled for error-path functions because errors are exceptional and scripts usually fail completely when an error is encountered.
|
|
* The `optimize` module is completely eliminated under `no_optimize`, which should yield smaller code size.
|
|
* `NativeCallContext::position` is added to return the position of the function call.
|
|
* `Scope::clone_visible` is added that copies only the last instance of each variable, omitting all shadowed variables.
|
|
|
|
Deprecated API's
|
|
----------------
|
|
|
|
* `NativeCallContext::call_fn_dynamic_raw` is deprecated and `NativeCallContext::call_fn_raw` is added.
|
|
* `From<EvalAltResult>` for `Result<T, Box<EvalAltResult> >` is deprecated so it will no longer be possible to do `EvalAltResult::ErrorXXXXX.into()` to convert to a `Result`; instead, `Err(EvalAltResult:ErrorXXXXX.into())` must be used. Code is clearer if errors are explicitly wrapped in `Err`.
|
|
|
|
|
|
Version 1.1.2
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `0.0` now prints correctly (used to print `0e0`).
|
|
* Unary operators are now properly recognized as an expression statement.
|
|
* Reverses a regression on string `+` operations.
|
|
* The global namespace is now searched before packages, which is the correct behavior.
|
|
|
|
|
|
Version 1.1.1
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Assignment to indexing expression with dot expressions inside no longer cause a compilation error.
|
|
* The `no_module` and `internals` features now work together without a compilation error.
|
|
* String literal operations (such as `"hello" + ", world"`) now optimizes correctly.
|
|
|
|
|
|
Version 1.1.0
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Custom syntax starting with a disabled standard keyword now works properly.
|
|
* When calling `Engine::call_fn`, new variables defined during evaluation of the body script are removed and no longer spill into the function call.
|
|
* `NamespaceRef::new` is fixed.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
### `Engine` API
|
|
|
|
* `Engine::consume_XXX` methods are renamed to `Engine::run_XXX` to make meanings clearer. The `consume_XXX` API is deprecated.
|
|
* `Engine::register_type_XXX` are now available even under `no_object`.
|
|
* Added `Engine::on_parse_token` to allow remapping certain tokens during parsing.
|
|
* Added `Engine::const_empty_string` to merge empty strings into a single instance.
|
|
|
|
### Custom Syntax
|
|
|
|
* `$symbol$` is supported in custom syntax to match any symbol.
|
|
* Custom syntax with `$block$`, `}` or `;` as the last symbol are now self-terminating (i.e. no need to attach a terminating `;`).
|
|
|
|
### `Dynamic` Values
|
|
|
|
* `Dynamic::as_string` and `Dynamic::as_immutable_string` are deprecated and replaced by `into_string` and `into_immutable_string` respectively.
|
|
* Added a number of constants to `Dynamic`.
|
|
* Added a number of constants and `fromXXX` constant methods to `Dynamic`.
|
|
* Added `sin`, `cos` and `tan` for `Decimal` values.
|
|
|
|
### `Decimal` Values
|
|
|
|
* `parse_float()`, `PI()` and `E()` now defer to `Decimal` under `no_float` if `decimal` is turned on.
|
|
* Added `log10()` for `Decimal`.
|
|
* `ln` for `Decimal` is now checked and won't panic.
|
|
|
|
### String Values
|
|
|
|
* `SmartString` now uses `LazyCompact` instead of `Compact` to minimize allocations.
|
|
* Added `pop` for strings.
|
|
* Added `ImmutableString::ptr_eq` to test if two strings point to the same allocation.
|
|
* The `serde` feature of `SmartString` is turned on under `metadata` to make `Map` serializable.
|
|
|
|
### `Scope` API
|
|
|
|
* `Scope::set_value` now takes anything that implements `Into<Cow<str> >`.
|
|
* Added `Scope::is_constant` to check if a variable is constant.
|
|
* Added `Scope::set_or_push` to add a new variable only if one doesn't already exist.
|
|
|
|
### `AST` API
|
|
|
|
* Added `ASTNode::position`.
|
|
* `ReturnType` is removed in favor of option flags for `Stmt::Return`.
|
|
* `Stmt::Break` and `Stmt::Continue` are merged into `Stmt::BreakLoop` via an option flag.
|
|
* `StaticVec` is changed to keep three items inline instead of four.
|
|
|
|
|
|
Version 1.0.6
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Eliminate unnecessary property write-back when accessed via a getter since property getters are assumed to be _pure_.
|
|
* Writing to a property of an indexed valued obtained via an indexer now works properly by writing back the changed value via an index setter.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* `MultiInputsStream`, `ParseState`, `TokenIterator`, `IdentifierBuilder` and `AccessMode` are exported under the `internals` feature.
|
|
|
|
|
|
Version 1.0.5
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `FloatWrapper` is no longer erroneously exported under `no_float+internals`.
|
|
* The `sign` function now works properly for float values that are `NaN`.
|
|
|
|
|
|
Version 1.0.4
|
|
=============
|
|
|
|
* Fixed bug with `catch` variable used in `catch` block.
|
|
|
|
|
|
Version 1.0.2
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed bug in method call followed by an array indexing.
|
|
|
|
|
|
Version 1.0.1
|
|
=============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed bug in using indexing/dotting inside index bracket.
|
|
* `while` and `loop` statements are no longer considered _pure_ (since a loop can go on forever and this is a side effect).
|
|
|
|
|
|
Version 1.0.0
|
|
=============
|
|
|
|
The official version `1.0`.
|
|
|
|
Almost the same version as `0.20.3` but with deprecated API's removed.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed infinite loop in certain script optimizations.
|
|
* Building for `no-std` no longer requires patching `smartstring`.
|
|
* Parsing a lone `return` or `throw` without a semicolon at the end of a block no longer raises an error.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* All deprecated API's (e.g. the `RegisterFn` and `RegisterResultFn` traits) are removed.
|
|
* `Module::set_id` is split into `Module::set_id` and `Module::clear_id` pair.
|
|
* `begin`, `end`, `each`, `then`, `unless` are no longer reserved keywords.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* New methods `is_odd`, `is_even` for integers, and `is_zero` for all numbers.
|
|
* `From<BTreeSet>` and `From<HashSet>` are added for `Dynamic`, which create object maps with `()` values.
|
|
|
|
|
|
Version 0.20.3
|
|
==============
|
|
|
|
This version adds support to index into an integer number, treating it as a bit-field.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed incorrect optimization regarding chain-indexing with non-numeric index.
|
|
* Variable values are checked for over-sized violations after assignments and setters.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* To keep the API consistent, strings are no longer iterable by default. Use the `chars` method to iterate through the characters in a string.
|
|
* `Dynamic::take_string` and `Dynamic::take_immutable_string` are renamed to `Dynamic::as_string` and `Dynamic::as_immutable_string` respectively.
|
|
|
|
New features
|
|
------------
|
|
|
|
* New syntax for `for` statement to include counter variable.
|
|
* An integer value can now be indexed to get/set a single bit.
|
|
* The `bits` method of an integer can be used to iterate through its bits.
|
|
* New `$bool$`, `$int$`, `$float$` and `$string$` expression types for custom syntax.
|
|
* New methods `to_hex`, `to_octal` and `to_binary` for integer numbers.
|
|
* New methods `to_upper`, `to_lower`, `make_upper`, `make_lower` for strings/characters.
|
|
|
|
|
|
Version 0.20.2
|
|
==============
|
|
|
|
This version adds a number of convenience features:
|
|
|
|
* Ability for a `Dynamic` to hold an `i32` _tag_ of arbitrary data
|
|
|
|
* Simplifies dynamic properties access by falling back to an indexer (passing the name of the property as a string) when a property is not found.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Propagation of constants held in a custom scope now works properly instead of always replacing by `()`.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Engine::disable_doc_comments` is removed because doc-comments are now placed under the `metadata` feature flag.
|
|
* Registering a custom syntax now only requires specifying whether the `Scope` is adjusted (i.e. whether variables are added or removed). There is no need to specify the number of variables added/removed.
|
|
* Assigning to a property of a constant is now allowed and no longer raise an `EvalAltResult::ErrorAssignmentToConstant` error. This is to facilitate the Singleton pattern. Registered setter functions are automatically guarded against setters calling on constants and will continue to raise errors unless the `pure` attribute is present (for plugins).
|
|
* If a property getter/setter is not found, an indexer with string index, if any, is tried.
|
|
* The indexers API (`Engine::register_indexer_XXX` and `Module::set_indexer_XXX`) are now also exposed under `no_index`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Each `Dynamic` value can now contain arbitrary data (type `i32`) in the form of a _tag_. This is to use up otherwise wasted space in the `Dynamic` type.
|
|
* A new internal feature `no_smartstring` to turn off `SmartString` for those rare cases that it is needed.
|
|
* `DynamicReadLock` and `DynamicWriteLoc` are exposed under `internals`.
|
|
* `From< Shared< Locked<Dynamic> > >` is added for `Dynamic` mapping directly to a shared value, together with support for `Dynamic::from`.
|
|
* An indexer with string index acts as a _fallback_ to a property getter/setter.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Registering a custom syntax now only requires specifying whether the `Scope` is adjusted (i.e. whether variables are added or removed). This allows more flexibility for cases where the number of new variables declared depends on internal logic.
|
|
* Putting a `pure` attribute on a plugin property/index setter now enables it to be used on constants.
|
|
|
|
|
|
Version 0.20.1
|
|
==============
|
|
|
|
This version enables functions to access constants declared at global level via the special `global` module.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed bug when position is zero in `insert` and `split_at` methods for arrays.
|
|
* Indexing operations with pure index values are no longer considered pure due to the possibility of indexers.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Dynamic::is_shared` and `Dynamic::is_locked` are removed under the `no_closure` feature. They used to always return `false`.
|
|
* `Engine::call_fn` now evaluates the `AST` before calling the function.
|
|
* `Engine::on_progress` is disabled with `unchecked`.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* The crate [`no-std-compat`](https://crates.io/crates/no_std_compat) is used to compile for `no-std`. This removes the need to use a special `crate::stdlib` namespace for `std` imports.
|
|
|
|
New features
|
|
------------
|
|
|
|
* A module called `global` is automatically created to hold global-level constants, which can then be accessed from functions.
|
|
* A new feature `no_position` is added to turn off position tracking during parsing to squeeze out the last drop of performance.
|
|
|
|
|
|
Version 0.20.0
|
|
==============
|
|
|
|
This version adds string interpolation with `` `... ${`` ... ``} ...` `` syntax.
|
|
|
|
`switch` statement cases can now have conditions.
|
|
|
|
Negative indices for arrays and strings are allowed and now count from the end (-1 = last item/character).
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Property setter op-assignments now work properly.
|
|
* Off-by-one bug in `Array::drain` method with range is fixed.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Negative index to an array or string yields the appropriate element/character counting from the _end_.
|
|
* The default `_` case of a `switch` statement now must be the last case, together with two new error variants: `EvalAltResult::WrongSwitchDefaultCase` and `EvalAltResult::WrongSwitchCaseCondition`.
|
|
* `ModuleResolver` trait methods take an additional parameter `source_path` that contains the path of the current environment. This is to facilitate loading other script files always from the current directory.
|
|
* `FileModuleResolver` now resolves relative paths under the source path if there is no base path set.
|
|
* `FileModuleResolver::base_path` now returns `Option<&str>` which is `None` if there is no base path set.
|
|
* Doc-comments now require the `metadata` feature.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* `Array::drain` and `Array::retain` methods with predicate now scan the array in forward order instead of in reverse.
|
|
|
|
New features
|
|
------------
|
|
|
|
* String interpolation support is added via the `` `... ${`` ... ``} ...` `` syntax.
|
|
* `FileModuleResolver` resolves relative paths under the parent path (i.e. the path holding the script that does the loading). This allows seamless cross-loading of scripts from a directory hierarchy instead of having all relative paths load from the current working directory.
|
|
* Negative index to an array or string yields the appropriate element/character counting from the _end_.
|
|
* `switch` statement cases can now have an optional `if` clause.
|
|
|
|
|
|
Version 0.19.15
|
|
===============
|
|
|
|
This version replaces all internal usage of `HashMap` with `BTreeMap`, which should result
|
|
in some speed improvement because a `BTreeMap` is leaner when the number of items held is small.
|
|
Most, if not all, collections in Rhai hold very few data items, so this is a typical scenario of
|
|
many tiny-sized collections.
|
|
|
|
The Rhai object map type, `Map`, used to be an alias to `HashMap` and is now aliased to `BTreeMap`
|
|
instead. This is also because, in the vast majority of usage cases, the number of properties held by
|
|
an object map is small.
|
|
|
|
`HashMap` and `BTreeMap` have almost identical public API's so this change is unlikely to break
|
|
existing code.
|
|
|
|
[`SmartString`](https://crates.io/crates/smartstring) is used to store identifiers (which tend to
|
|
be short, fewer than 23 characters, and ASCII-based) because they can usually be stored inline.
|
|
`Map` keys now also use [`SmartString`](https://crates.io/crates/smartstring).
|
|
|
|
In addition, there is now support for line continuation in strings (put `\` at the end of line) as
|
|
well as multi-line literal strings (wrapped by back-ticks: `` `...` ``).
|
|
|
|
Finally, all function signature/metadata methods are now grouped under the umbrella `metadata` feature.
|
|
This avoids spending precious resources maintaining metadata for functions for the vast majority of
|
|
use cases where such information is not required.
|
|
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* The feature flags `no_index + no_object` now compile without errors.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* The traits `RegisterFn` and `RegisterResultFn` are removed. `Engine::register_fn` and `Engine::register_result_fn` are now implemented directly on `Engine`.
|
|
* `FnPtr::call_dynamic` now takes `&NativeCallContext` instead of consuming it.
|
|
* All `Module::set_fn_XXX` methods are removed, in favor of `Module::set_native_fn`.
|
|
* `Array::reduce` and `Array::reduce_rev` now take a `Dynamic` as initial value instead of a function pointer.
|
|
* `protected`, `super` are now reserved keywords.
|
|
* The `Module::set_fn_XXX` API now take `&str` as the function name instead of `Into<String>`.
|
|
* The _reflections_ API such as `Engine::gen_fn_signatures`, `Module::update_fn_metadata` etc. are put under the `metadata` feature gate.
|
|
* The shebang `#!` is now a reserved symbol.
|
|
* Shebangs at the very beginning of script files are skipped when loading them.
|
|
* [`SmartString`](https://crates.io/crates/smartstring) is used for identifiers by default. Currently, a PR branch is pulled for `no-std` builds. The official crate will be used once `SmartString` is fixed to support `no-std`.
|
|
* `Map` is now an alias to `BTreeMap<SmartString, Dynamic>` instead of `HashMap` because most object maps hold few properties.
|
|
* `EvalAltResult::FnWrongDefinition` is renamed `WrongFnDefinition` for consistency.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Line continuation (via `\`) and multi-line literal strings (wrapped with `` ` ``) support are added.
|
|
* Rhai scripts can now start with a shebang `#!` which is ignored.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Replaced all `HashMap` usage with `BTreeMap` for better performance because collections in Rhai are tiny.
|
|
* `Engine::register_result_fn` no longer requires the successful return type to be `Dynamic`. It can now be any clonable type.
|
|
* `#[rhai_fn(return_raw)]` can now return `Result<T, Box<EvalAltResult> >` where `T` is any clonable
|
|
type instead of `Result<Dynamic, Box<EvalAltResult> >`.
|
|
* `Dynamic::clone_cast` is added to simplify casting from a `&Dynamic`.
|
|
|
|
|
|
Version 0.19.14
|
|
===============
|
|
|
|
This version runs faster due to optimizations done on AST node structures. It also fixes a number of
|
|
panic bugs related to passing shared values as function call arguments.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Panic when passing a shared string into a registered function as `&str` argument is fixed.
|
|
* Panic when calling `switch` statements on custom types is fixed.
|
|
* Potential overflow panics in `range(from, to, step)` is fixed.
|
|
* `&mut String` parameters in registered functions no longer panic when passed a string.
|
|
* Some expressions involving shared variables now work properly, for example `x in shared_value`, `return shared_value`, `obj.field = shared_value` etc. Previously, the resultant value is still shared which is counter-intuitive.
|
|
* Errors in native Rust functions now contain the correct function call positions.
|
|
* Fixed error types in `EvalAltResult::ErrorMismatchDataType` which were swapped.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Dynamic::as_str` is removed because it does not properly handle shared values.
|
|
* Zero step in the `range` function now raises an error instead of creating an infinite stream.
|
|
* Error variable captured by `catch` is now an _object map_ containing error fields.
|
|
* `EvalAltResult::clear_position` is renamed `EvalAltResult::take_position` and returns the position taken.
|
|
* `private` functions in an `AST` can now be called with `call_fn` etc.
|
|
* `NativeCallContext::call_fn_dynamic_raw` no longer has the `pub_only` parameter.
|
|
* `Module::update_fn_metadata` input parameter is changed.
|
|
* Function keywords (e.g. `type_of`, `eval`, `Fn`) can no longer be overloaded. It is more trouble than worth. To disable these keywords, use `Engine::disable_symbol`.
|
|
* `is_def_var` and `is_def_fn` are now reserved keywords.
|
|
* `Engine::id` field is removed because it is never used.
|
|
* `num-traits` is now a required dependency.
|
|
* The `in` operator is now implemented on top of the `contains` function and is no longer restricted to a few specific types.
|
|
* `EvalAltResult::ErrorInExpr` is removed because the `in` operator now calls `contains`.
|
|
* The methods `AST::walk`, `Expr::walk`, `Stmt::walk` and `ASTNode::walk` and the callbacks they take now return `bool` to optionally terminate the recursive walk.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Layout of AST nodes is optimized to reduce redirections, so speed is improved.
|
|
* Function calls are more optimized and should now run faster.
|
|
* `range` function now supports negative step and decreasing streams (i.e. to < from).
|
|
* More information is provided to the error variable captured by the `catch` statement in an _object map_.
|
|
* Previously, `private` functions in an `AST` cannot be called with `call_fn` etc. This is inconvenient when trying to call a function inside a script which also serves as a loadable module exporting part (but not all) of the functions. Now, all functions (`private` or not) can be called in an `AST`. The `private` keyword is relegated to preventing a function from being exported.
|
|
* `Dynamic::as_unit` just for completeness sake.
|
|
* `bytes` method added for strings to get length quickly (if the string is ASCII-only).
|
|
* `FileModuleResolver` can now enable/disable caching.
|
|
* Recursively walking an `AST` can now be terminated in the middle.
|
|
|
|
|
|
Version 0.19.13
|
|
===============
|
|
|
|
This version introduces functions with `Dynamic` parameters acting as wildcards.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Bug in `Position::is_beginning_of_line` is fixed.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* For plugin functions, constants passed to methods (i.e. `&mut` parameter) now raise an error unless the functions are marked with `#[rhai_fn(pure)]`.
|
|
* Visibility (i.e. `pub` or not) for generated _plugin_ modules now follow the visibility of the underlying module.
|
|
* Comparison operators between the sames types or different _numeric_ types now throw errors when they're not defined instead of returning the default. Only comparing between _different_ types will return the default.
|
|
* Default stack-overflow and top-level expression nesting limits for release builds are lowered to 64 from 128.
|
|
* `Engine::call_fn_dynamic` takes an additional parameter to optionally evaluate the given `AST` before calling the function.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Functions are now allowed to have `Dynamic` arguments.
|
|
* `#[rhai_fn(pure)]` attribute to mark a plugin function with `&mut` parameter as _pure_ so constants can be passed to it. Without it, passing a constant value into the `&mut` parameter will now raise an error.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Built-in operators between `FLOAT`/[`Decimal`](https://crates.io/crates/rust_decimal) and `INT` are now implemented for more speed under those cases.
|
|
* Error position in `eval` statements is now wrapped in an `EvalAltResult::ErrorInFunctionCall`.
|
|
* `Position` now implements `Add` and `AddAssign`.
|
|
* `Scope` now implements `IntoIterator`.
|
|
* Strings now have the `-`/`-=` operators and the `remove` method to delete a sub-string/character.
|
|
* Strings now have the `split_rev` method and variations of `split` with maximum number of segments.
|
|
* Arrays now have the `split` method.
|
|
* Comparisons between `FLOAT`/[`Decimal`](https://crates.io/crates/rust_decimal) and `INT` are now built in.
|
|
* Comparisons between string and `char` are now built in.
|
|
* `Engine::call_fn_dynamic` can now optionally evaluate the given `AST` before calling the function.
|
|
|
|
|
|
Version 0.19.12
|
|
===============
|
|
|
|
This version is an incremental release with a number of enhancements and bug fixes.
|
|
|
|
Notice that there are a number of breaking changes, especially with regards to replacing the `~`
|
|
exponential operator with `**`, and the addition of the `decimal` feature that turns on
|
|
[`Decimal`](https://crates.io/crates/rust_decimal) support.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Empty statements (i.e. statements with only one `;`) now parse correctly and no longer hang.
|
|
* `continue`, `break` and `return` statements no longer panic inside a `try .. catch` block.
|
|
* `round` function for `f64` is now implemented correctly.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* In order to be consistent with other scripting languages:
|
|
* the power/exponentiation operator is changed from `~` to `**`; `~` is now a reserved symbol
|
|
* the power/exponentiation operator now binds to the right
|
|
* trigonometry functions now take radians and return radians instead of degrees
|
|
* `Dynamic::into_shared` is no longer available under `no_closure`. It used to panic.
|
|
* `Token::is_operator` is renamed to `Token::is_symbol`.
|
|
* `AST::clone_functions_only_filtered`, `AST::merge_filtered`, `AST::combine_filtered` and `AST::retain_functions` now take `Fn` instead of `FnMut` as the filter predicate.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Scientific notation is supported for floating-point number literals.
|
|
* A new feature, `decimal`, enables the [`Decimal`](https://crates.io/crates/rust_decimal) data type. When both `no_float` and `decimal` features are enabled, floating-point literals parse to `Decimal`.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Functions resolution cache is used in more cases, making repeated function calls faster.
|
|
* Added `atan(x, y)` and `hypot(x, y)` to `BasicMathPackage`.
|
|
* Added standard arithmetic operators between `FLOAT`/[`Decimal`](https://crates.io/crates/rust_decimal) and `INT`.
|
|
|
|
|
|
Version 0.19.11
|
|
===============
|
|
|
|
This version streamlines compiling for WASM.
|
|
|
|
Rust compiler minimum version is raised to 1.49.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Parameters passed to plugin module functions were sometimes erroneously consumed. This is now fixed.
|
|
* Fixes compilation errors in `metadata` feature build.
|
|
* Stacking `!` operators now work properly.
|
|
* Off-by-one error in `insert` method for arrays is fixed.
|
|
* Invalid property access now throws the appropriate error instead of panics.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Rust compiler requirement raised to 1.49.
|
|
* `NativeCallContext::new` taker an additional parameter containing the name of the function called.
|
|
* `Engine::set_doc_comments` is renamed `Engine::enable_doc_comments`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Two new features, `wasm-bindgen` and `stdweb`, to specify the JS interop layer for WASM builds. `wasm-bindgen` used to be required.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* `ahash` is used to hash function call parameters. This should yield speed improvements.
|
|
* `Dynamic` and `ImmutableString` now implement `serde::Serialize` and `serde::Deserialize`.
|
|
* `NativeCallContext` has a new field containing the name of the function called, useful when the same Rust function is registered under multiple names in Rhai.
|
|
* New functions `PI()` and `E()` to return mathematical constants, and `to_radians` and `to_degrees` to convert between radians and degrees.
|
|
|
|
|
|
Version 0.19.10
|
|
===============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `no_std` feature now compiles correctly (bug introduced in `0.19.9`).
|
|
* Bug in `FileModuleResolver::clear_cache_for_path` path mapping fixed.
|
|
* Some optimizer fringe cases are fixed - related to constants propagation when the evil `eval` is present.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* The error variant `EvalAltResult::ErrorInFunctionCall` has a new parameter holding the _source_ of the function.
|
|
* `ParseErrorType::WrongFnDefinition` is renamed `FnWrongDefinition`.
|
|
* Redefining an existing function within the same script now throws a new `ParseErrorType::FnDuplicatedDefinition`. This is to prevent accidental overwriting an earlier function definition.
|
|
* `AST::set_source` is now split into `AST::set_source` and `AST::clear_source`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `Engine::compile_into_self_contained` compiles a script into an `AST` and _eagerly_ resolves all `import` statements with string literal paths. The resolved modules are directly embedded into the `AST`. When the `AST` is later evaluated, `import` statements directly yield the pre-resolved modules without going through the resolution process once again.
|
|
* `AST::walk`, `Stmt::walk` and `Expr::walk` internal API's to recursively walk an `AST`.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Source information is provided when there is an error within a call to a function defined in another module.
|
|
* Source information is provided to the `NativeCallContext` for native Rust functions.
|
|
* `EvalAltResult::clear_position` to clear the position information of an error - useful when only the message is needed and the position doesn't need to be printed out.
|
|
* A new optional function `resolve_ast` is added to the `ModuleResolver` trait for advanced usage.
|
|
|
|
|
|
Version 0.19.9
|
|
==============
|
|
|
|
This version fixes a bug introduced in `0.19.8` which breaks property access
|
|
within closures.
|
|
|
|
It also removes the confusing differences between _packages_ and _modules_
|
|
by unifying the terminology and API under the global umbrella of _modules_.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fix bug when accessing properties in closures.
|
|
* Fix bug when accessing a deep index with a function call.
|
|
* Fix bug that sometimes allow assigning to an invalid l-value.
|
|
* Fix off-by-one error with `Engine::set_max_call_levels`.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Engine::load_package` is renamed `Engine::register_global_module` and now must explicitly pass a shared [`Module`].
|
|
* `Engine::register_module` is renamed `Engine::register_static_module` and now must explicitly pass a shared [`Module`].
|
|
* `Package::get` is renamed `Package::as_shared_module`.
|
|
* `Engine::set_module_resolver` now takes a straight module resolver instead of an `Option`. To disable module resolving, use the new `DummyModuleResolver`.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* `Scope` is now `Clone + Hash`.
|
|
* `Engine::register_static_module` now supports sub-module paths (e.g. `foo::bar::baz`).
|
|
* `Engine::register_custom_operator` now accepts reserved symbols.
|
|
* `Engine::register_custom_operator` now returns an error if given a precedence of zero.
|
|
* The examples `repl` and `rhai_runner` are moved into `bin` and renamed `rhai-repl` and `rhai-run` respectively.
|
|
|
|
|
|
Version 0.19.8
|
|
==============
|
|
|
|
This version makes it easier to generate documentation for a Rhai code base.
|
|
|
|
Each function defined in an `AST` can optionally attach _doc-comments_ (which, as in Rust,
|
|
are comments prefixed by either `///` or `/**`). Doc-comments allow third-party tools to
|
|
automatically generate documentation for functions defined in a Rhai script.
|
|
|
|
A new API, `Engine::gen_fn_metadata_to_json` and `Engine::gen_fn_metadata_with_ast_to_json`,
|
|
paired with the new `metadata` feature, exports the full list of functions metadata
|
|
(including those in an `AST`) as a JSON document.
|
|
|
|
There are also a sizable number of bug fixes.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* 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.
|
|
* Indexing of namespace-qualified variables now work properly, such as `path::to::var[x]`.
|
|
* Constants are no longer propagated by the optimizer if shadowed by a non-constant variable.
|
|
* A constant passed as the `this` parameter to Rhai functions now throws an error if assigned to.
|
|
* Generic type parameter of `Engine::register_iterator` is `IntoIterator` instead of `Iterator`.
|
|
* Fixes parsing of block comments ending with `**/` or inner blocks starting with `//*`.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Engine::on_progress` now takes `u64` instead of `&u64`.
|
|
* The closure for `Engine::on_debug` now takes two additional parameters: `source: Option<&str>` and `pos: Position`.
|
|
* `AST::iter_functions` now returns `ScriptFnMetadata`.
|
|
* The parser function passed to `Engine::register_custom_syntax_raw` now takes an additional parameter containing the _look-ahead_ symbol.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `AST::iter_functions` now returns `ScriptFnMetadata` which includes, among others, _doc-comments_ for functions prefixed by `///` or `/**`.
|
|
* _Doc-comments_ can be enabled/disabled with the new `Engine::set_doc_comments` method.
|
|
* 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.
|
|
* `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.
|
|
* `NativeCallContext` and `EvalContext` both expose `source()` which returns the current source, if any.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* A functions lookup cache is added to make function call resolution faster.
|
|
* Capturing a constant variable in a closure is now supported, with no cloning.
|
|
* A _look-ahead_ symbol is provided to custom syntax parsers, which can be used to parse variable-length symbol streams.
|
|
|
|
|
|
Version 0.19.7
|
|
==============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixes compilation errors with certain feature flag combinations.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Property getters/setters and indexers defined in a plugin module are by default `#[rhai_fn(global)]`.
|
|
* `to_debug` is a new standard function for converting a value into debug format.
|
|
* Arrays and object maps now print values using `to_debug` (if available).
|
|
|
|
|
|
Version 0.19.6
|
|
==============
|
|
|
|
This version adds the `switch` statement.
|
|
|
|
It also allows exposing selected module functions (usually methods) to the global namespace.
|
|
This is very convenient when encapsulating the API of a custom Rust type into a module while having methods
|
|
and iterators registered on the custom type work normally.
|
|
|
|
A new `gen_fn_signatures` API enables enumerating the registered functions of an `Engine` for documentation purposes.
|
|
It also prepares the way for a future reflection API.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Custom syntax that introduces a shadowing variable now works properly.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Module::set_fn`, `Module::set_raw_fn` and `Module::set_fn_XXX_mut` all take an additional parameter of `FnNamespace`.
|
|
* `Module::set_fn` takes a further parameter with a list of parameter names/types plus the function return type, if any.
|
|
* `Module::get_sub_module_mut` is removed.
|
|
* `begin`, `end`, `unless` are now reserved keywords.
|
|
* `EvalPackage` is removed in favor of `Engine::disable_symbol`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* New `switch` statement.
|
|
* New `do ... while` and `do ... until` statements.
|
|
* New `Engine::gen_fn_signatures`, `Module::gen_fn_signatures` and `PackagesCollection::gen_fn_signatures` to generate a list of signatures for functions registered.
|
|
* New `Engine::register_static_module` to register a module as a sub-module in the global namespace.
|
|
* New `set_exported_global_fn!` macro to register a plugin function and expose it to the global namespace.
|
|
* `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.
|
|
* `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.
|
|
* New `Module::update_fn_metadata` to update a module function's parameter names and types.
|
|
* New `#[rhai_fn(global)]` and `#[rhai_fn(internal)]` attributes to determine whether a function defined in a plugin module should be exposed to the global namespace. This is convenient when defining an API for a custom type.
|
|
* New `get_fn_metadata_list` to get the metadata of all script-defined functions in scope.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* New constants under `Dynamic` including `UNIT`, `TRUE`, `FALSE`, `ZERO`, `ONE` etc.
|
|
* Floating-point numbers ending with a decimal point without a trailing `0` are supported.
|
|
|
|
|
|
Version 0.19.5
|
|
==============
|
|
|
|
This version fixes a bug that prevents compilation with the `internals` feature.
|
|
It also speeds up importing modules.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixes compilation error when using the `internals` feature. Bug introduced in `0.19.4`.
|
|
* Importing script files recursively no longer panics.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Modules imported at global level can now be accessed in functions.
|
|
* `ModuleResolver::resolve` now returns `Shared<Module>` for better resources sharing when loading modules.
|
|
* `ParseErrorType::DuplicatedExport` is removed as multiple `export`'s are now allowed.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Modules imported via `import` statements at global level can now be used in functions. There is no longer any need to re-`import` the modules at the beginning of each function block.
|
|
* Modules imported via `import` statements are encapsulated into the `AST` when loading a module from a script file.
|
|
* `export` keyword can now be tagged onto `let` and `const` statements as a short-hand, e.g.: `export let x = 42;`
|
|
* Variables can now be `export`-ed multiple times under different names.
|
|
* `index_of`, `==` and `!=` are defined for arrays.
|
|
* `==` and `!=` are defined for object maps.
|
|
|
|
|
|
Version 0.19.4
|
|
==============
|
|
|
|
This version basically cleans up the code structure in preparation for a potential `1.0` release in the future.
|
|
Most scripts should see a material speed increase.
|
|
|
|
This version also adds a low-level API for more flexibility when defining custom syntax.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixes `Send + Sync` for `EvalAltResult` under the `sync` feature. Bug introduced with `0.19.3`.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Custom syntax can no longer start with a keyword (even a _reserved_ one), even if it has been disabled. That is to avoid breaking scripts later when the keyword is no longer disabled.
|
|
|
|
Changes to Error Handling
|
|
------------------------
|
|
|
|
* `EvalAltResult::ErrorAssignmentToUnknownLHS` is moved to `ParseError::AssignmentToInvalidLHS`. `ParseError::AssignmentToCopy` is removed.
|
|
* `EvalAltResult::ErrorDataTooLarge` is simplified.
|
|
* `Engine::on_progress` closure signature now returns `Option<Dynamic>` with the termination value passed on to `EvalAltResult::ErrorTerminated`.
|
|
* `ParseErrorType::BadInput` now wraps a `LexError` instead of a text string.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `f32_float` feature to set `FLOAT` to `f32`.
|
|
* Low-level API for custom syntax allowing more flexibility in designing the syntax.
|
|
* `Module::fill_with` to poly-fill a module with another.
|
|
* Scripts terminated via `Engine::on_progress` can now pass on a value as a termination token.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Essential AST structures like `Expr` and `Stmt` are packed into smaller sizes (16 bytes and 32 bytes on 64-bit), stored inline for more cache friendliness, and de-`Box`ed as much as possible.
|
|
* `Scope` is optimized for cache friendliness.
|
|
|
|
|
|
Version 0.19.3
|
|
==============
|
|
|
|
This version streamlines some of the advanced API's, and adds the `try` ... `catch` statement
|
|
to catch exceptions.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `EvalAltResult::ErrorReadingScriptFile` is removed in favor of the new `EvalAltResult::ErrorSystem`.
|
|
* `EvalAltResult::ErrorLoopBreak` is renamed to `EvalAltResult::LoopBreak`.
|
|
* `Engine::register_raw_fn` and `FnPtr::call_dynamic` function signatures have changed.
|
|
* Callback signatures to `Engine::on_var` and `Engine::register_custom_syntax` have changed.
|
|
* `EvalAltResult::ErrorRuntime` now wraps a `Dynamic` instead of a string.
|
|
* Default call stack depth for `debug` builds is reduced to 8 (from 12) because it keeps overflowing the stack in GitHub CI!
|
|
* Keyword `thread` is reserved.
|
|
|
|
New features
|
|
------------
|
|
|
|
* The plugins system is enhanced to support functions taking a `NativeCallContext` as the first parameter.
|
|
* `throw` statement can now throw any value instead of just text strings.
|
|
* New `try` ... `catch` statement to catch exceptions.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Calling `eval` or `Fn` in method-call style, which is an error, is now caught during parsing.
|
|
* `func!()` call style is valid even under `no_closure` feature.
|
|
|
|
|
|
Version 0.19.2
|
|
==============
|
|
|
|
Bug fix on call module functions.
|
|
|
|
|
|
Version 0.19.1
|
|
==============
|
|
|
|
This version adds a variable resolver with the ability to short-circuit variable access,
|
|
plus a whole bunch of array methods.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `AST::iter_functions` now returns an iterator instead of taking a closure.
|
|
* `Module::get_script_function_by_signature` renamed to `Module::get_script_fn` and returns `&<Shared<ScriptFnDef> >`.
|
|
* `Module::num_fn`, `Module::num_var` and `Module::num_iter` are removed and merged into `Module::count`.
|
|
* The `merge_namespaces` parameter to `Module::eval_ast_as_new` is removed and now defaults to `true`.
|
|
* `GlobalFileModuleResolver` is removed because its performance gain over the `FileModuleResolver` is no longer very significant.
|
|
* The following `EvalAltResult` variants are removed and merged into `EvalAltResult::ErrorMismatchDataType`: `ErrorCharMismatch`, `ErrorNumericIndexExpr`, `ErrorStringIndexExpr`, `ErrorImportExpr`, `ErrorLogicGuard`, `ErrorBooleanArgMismatch`
|
|
* `Scope::iter_raw` returns an iterator with an additional field indicating whether the variable is constant or not.
|
|
* `rhai::ser` and `rhai::de` namespaces are merged into `rhai::serde`.
|
|
* New reserved symbols: `++`, `--`, `..`, `...`.
|
|
* Callback signature for custom syntax implementation function is changed to allow for more flexibility.
|
|
* Default call stack depth for `debug` builds is reduced to 12 (from 16).
|
|
* Precedence for `~` is raised, while `in` is moved below logic comparison operators.
|
|
|
|
New features
|
|
------------
|
|
|
|
* New `Engine::on_var` to register a _variable resolver_.
|
|
* `const` statements can now take any expression (or none at all) instead of only constant values.
|
|
* `OptimizationLevel::Simple` now eagerly evaluates built-in binary operators of primary types (if not overloaded).
|
|
* `is_def_var()` to detect if variable is defined, and `is_def_fn()` to detect if script function is defined.
|
|
* `Dynamic::from(&str)` now constructs a `Dynamic` with a copy of the string as value.
|
|
* `AST::combine` and `AST::combine_filtered` allows combining two `AST`'s without creating a new one.
|
|
* `map`, `filter`, `reduce`, `reduce_rev`, `some`, `all`, `extract`, `splice`, `chop` and `sort` functions for arrays.
|
|
* New `Module::set_iterable` and `Module::set_iterator` to define type iterators more easily. `Engine::register_iterator` is changed to use the simpler version.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* Many one-liners and few-liners are now marked `#[inline]` or `[inline(always)]`, just in case it helps when LTO is not turned on.
|
|
|
|
|
|
Version 0.19.0
|
|
==============
|
|
|
|
The major new feature for this version is _Plugins_ support, powered by procedural macros.
|
|
Plugins make it extremely easy to develop and register Rust functions with an `Engine`.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `if` statement with an empty `true` block would not evaluate the `false` block. This is now fixed.
|
|
* Fixes a bug in `Module::set_fn_4_mut`.
|
|
* Module API's now properly handle `&str` and `String` parameters.
|
|
* Indexers are available under `no_object`.
|
|
* Registered operator-assignment functions (e.g. `+=`) now work correctly.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Engine::register_set_result` and `Engine::register_indexer_set_result` now take a function that returns `Result<(), Box<EvalAltResult> >`.
|
|
* `Engine::register_indexer_XXX` and `Module::set_indexer_XXX` panic when the type is `Array`, `Map` or `String`.
|
|
* `EvalAltResult` has a new variant `ErrorInModule` which holds errors when loading an external module.
|
|
* `Module::eval_ast_as_new` now takes an extra boolean parameter, indicating whether to encapsulate the entire module into a separate namespace.
|
|
* Functions in `FileModuleResolver` loaded modules now can cross-call each other in addition to functions in the global namespace. For the old behavior, use `MergingFileModuleResolver` instead.
|
|
* New `EvalAltResult::ErrorInModule` variant capturing errors when loading a module from a script file.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Plugins support via procedural macros.
|
|
* Scripted functions are allowed in packages.
|
|
* `parse_int` and `parse_float` functions for parsing numbers; `split` function for splitting strings.
|
|
* `AST::iter_functions` and `Module::iter_script_fn_info` to iterate functions.
|
|
* Functions iteration functions for `AST` and `Module` now take `FnMut` instead of `Fn`.
|
|
* New `FileModuleResolver` that encapsulates the entire `AST` of the module script, allowing function cross-calling. The old version is renamed `MergingFileModuleResolver`.
|
|
* `+` and `-` operators for timestamps to increment/decrement by seconds.
|
|
|
|
|
|
Version 0.18.3
|
|
==============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* `Engine::compile_expression`, `Engine::eval_expression` etc. no longer parse anonymous functions and closures.
|
|
* Imported modules now work inside closures.
|
|
* Closures that capture now work under `no_object`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Adds `Module::combine_flatten` to combine two modules while flattening to the root level.
|
|
|
|
|
|
Version 0.18.2
|
|
==============
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixes bug that prevents calling functions in closures.
|
|
* Fixes bug that erroneously consumes the first argument to a namespace-qualified function call.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Module::contains_fn` and `Module::get_script_fn` no longer take the `public_only` parameter.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Adds `Engine::register_get_result`, `Engine::register_set_result`, `Engine::register_indexer_get_result`, `Engine::register_indexer_set_result` API.
|
|
* Adds `Module::combine` to combine two modules.
|
|
* `Engine::parse_json` now also accepts a JSON object starting with `#{`.
|
|
|
|
|
|
Version 0.18.1
|
|
==============
|
|
|
|
This version adds:
|
|
|
|
* Anonymous functions (in Rust closure syntax). Simplifies creation of single-use ad-hoc functions.
|
|
* Currying of function pointers.
|
|
* Closures - auto-currying of anonymous functions to capture shared variables from the external scope. Use the `no_closure` feature to disable sharing values and capturing.
|
|
* Binding the `this` pointer in a function pointer `call`.
|
|
* Capturing call scope via `func!(...)` syntax.
|
|
|
|
New features
|
|
------------
|
|
|
|
* `call` can now be called function-call style for function pointers - this is to handle builds with `no_object`.
|
|
* Reserve language keywords, such as `print`, `eval`, `call`, `this` etc.
|
|
* `x.call(f, ...)` allows binding `x` to `this` for the function referenced by the function pointer `f`.
|
|
* Anonymous functions are supported in the syntax of a Rust closure, e.g. `|x, y, z| x + y - z`.
|
|
* Custom syntax now works even without the `internals` feature.
|
|
* Currying of function pointers is supported via the new `curry` keyword.
|
|
* Automatic currying of anonymous functions to capture shared variables from the external scope.
|
|
* Capturing of the calling scope for function call via the `func!(...)` syntax.
|
|
* `Module::set_indexer_get_set_fn` is added as a short-hand of both `Module::set_indexer_get_fn` and `Module::set_indexer_set_fn`.
|
|
* New `unicode-xid-ident` feature to allow [Unicode Standard Annex #31](http://www.unicode.org/reports/tr31/) for identifiers.
|
|
* `Scope::iter_raw` returns an iterator with a reference to the underlying `Dynamic` value (which may be shared).
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Language keywords are now _reserved_ (even when disabled) and they can no longer be used as variable names.
|
|
* Function signature for defining custom syntax is simplified.
|
|
* `Engine::register_raw_fn_XXX` API shortcuts are removed.
|
|
* `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.
|
|
* The iterator returned by `Scope::iter` now contains a clone of the `Dynamic` value (unshared).
|
|
* `Engine::register_global_module` takes any type that is `Into<PackageLibrary>`.
|
|
* Error in `Engine::register_custom_syntax` is no longer `Box`-ed.
|
|
|
|
Housekeeping
|
|
------------
|
|
|
|
* Most compilation warnings are eliminated via feature gates.
|
|
|
|
|
|
Version 0.17.0
|
|
==============
|
|
|
|
This version adds:
|
|
|
|
* [`serde`](https://crates.io/crates/serde) support for working with `Dynamic` values (particularly _object maps_).
|
|
* Low-level API to register functions.
|
|
* Surgically disable keywords and/or operators in the language.
|
|
* Define custom operators.
|
|
* Extend the language via custom syntax.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Fixed method calls in the middle of a dot chain.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `EvalAltResult::ErrorMismatchOutputType` has an extra argument containing the name of the requested type.
|
|
* `Engine::call_fn_dynamic` take an extra argument, allowing a `Dynamic` value to be bound to the `this` pointer.
|
|
* Precedence of the `%` (modulo) operator is lowered to below bit shifts. This is to handle the case of `x < < 3 % 10`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* New `serde` feature to allow serializing/deserializing to/from `Dynamic` values using [`serde`](https://crates.io/crates/serde).
|
|
This is particularly useful when converting a Rust `struct` to a `Dynamic` _object map_ and back.
|
|
* `Engine::disable_symbol` to surgically disable keywords and/or operators.
|
|
* `Engine::register_custom_operator` to define a custom operator.
|
|
* `Engine::register_custom_syntax` to define a custom syntax.
|
|
* New low-level API `Engine::register_raw_fn`.
|
|
* New low-level API `Module::set_raw_fn` mirroring `Engine::register_raw_fn`.
|
|
* `AST::clone_functions_only`, `AST::clone_functions_only_filtered` and `AST::clone_statements_only` to clone only part of an `AST`.
|
|
* The boolean `^` (XOR) operator is added.
|
|
* `FnPtr` is exposed as the function pointer type.
|
|
* `rhai::module_resolvers::ModuleResolversCollection` added to try a list of module resolvers.
|
|
* It is now possible to mutate the first argument of a namespace-qualified function call when the argument is a simple variable (but not a module constant).
|
|
* Many configuration/setting API's now returns `&mut Self` so that the calls can be chained.
|
|
* `String` parameters in functions are supported (but inefficiently).
|
|
|
|
|
|
Version 0.16.1
|
|
==============
|
|
|
|
Bug fix release to fix errors when compiling with features.
|
|
|
|
|
|
Version 0.16.0
|
|
==============
|
|
|
|
The major new feature in this version is OOP - well, poor man's OOP, that is.
|
|
|
|
The `README` is officially transferred to [The Rhai Book](https://rhai.rs/book).
|
|
|
|
An online [Playground](https://alvinhochun.github.io/rhai-demo/) is available.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* The trait function `ModuleResolver::resolve` no longer takes a `Scope` as argument.
|
|
* Functions defined in script now differentiates between using method-call style and normal function-call style.
|
|
The method-call style will bind the object to the `this` parameter instead of consuming the first parameter.
|
|
* Imported modules are no longer stored in the `Scope`. `Scope::push_module` is removed.
|
|
Therefore, cannot rely on module imports to persist across invocations using a `Scope`.
|
|
* `AST::retain_functions` is used for another purpose. The old `AST::retain_functions` is renamed to `AST::clear_statements`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Support for _function pointers_ via `Fn(name)` and `Fn.call(...)` syntax - a poor man's first-class function.
|
|
* Support for calling script-defined functions in method-call style with `this` binding to the object.
|
|
* Special support in object maps for OOP.
|
|
* Expanded the `AST` API for fine-tuned manipulation of functions.
|
|
|
|
Enhancements
|
|
------------
|
|
|
|
* [The Rhai Book](https://rhai.rs/book) is online. Most content in the original `README` was transferred to the Book.
|
|
* New feature `internals` to expose internal data structures (e.g. the AST nodes).
|
|
|
|
|
|
Version 0.15.1
|
|
==============
|
|
|
|
This is a minor release which enables updating indexers (via registered indexer setters) and supports functions
|
|
with `&str` parameters (maps transparently to `ImmutableString`). WASM is also a tested target.
|
|
|
|
Bug fix
|
|
-------
|
|
|
|
* `let s="abc"; s[1].change_to('X');` now correctly sets the character '`X`' into '`s`' yielding `"aXc"`.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* Callback closure passed to `Engine::on_progress` now takes `&u64` instead of `u64` to be consistent with other callback signatures.
|
|
* `Engine::register_indexer` is renamed to `Engine::register_indexer_get`.
|
|
* `Module::set_indexer_fn` is renamed to `Module::set_indexer_get_fn`.
|
|
* The tuple `ParseError` now exposes the internal fields and the `ParseError::error_type` and `ParseError::position` methods are removed. The first tuple field is the `ParseErrorType` and the second tuple field is the `Position`.
|
|
* `Engine::call_fn_dynamic` now takes any type that implements `IntoIterator<Item = Dynamic>`.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Indexers are now split into getters and setters (which now support updates). The API is split into `Engine::register_indexer_get` and `Engine::register_indexer_set` with `Engine::register_indexer_get_set` being a short-hand. Similarly, `Module::set_indexer_get_fn` and `Module::set_indexer_set_fn` are added.
|
|
* `Engine:register_fn` and `Engine:register_result_fn` accepts functions that take parameters of type `&str` (immutable string slice), which maps directly to `ImmutableString`. This is to avoid needing wrappers for functions taking string parameters.
|
|
* Set maximum limit on data sizes: `Engine::set_max_string_size`, `Engine::set_max_array_size` and `Engine::set_max_map_size`.
|
|
* Supports trailing commas on array literals, object map literals, function definitions and function calls.
|
|
* Enhances support for compiling to WASM.
|
|
|
|
|
|
Version 0.15.0
|
|
==============
|
|
|
|
This version uses immutable strings (`ImmutableString` type) and built-in operator functions (e.g. `+`, `>`, `+=`) to improve speed, plus some bug fixes.
|
|
|
|
Regression fix
|
|
--------------
|
|
|
|
* Do not optimize script with `eval_expression` - it is assumed to be one-off and short.
|
|
|
|
Bug fixes
|
|
---------
|
|
|
|
* Indexing with an index or dot expression now works property (it compiled wrongly before).
|
|
For example, `let s = "hello"; s[s.len-1] = 'x';` now works property instead of causing a runtime error.
|
|
* `if` expressions are not supposed to be allowed when compiling for expressions only. This is fixed.
|
|
|
|
Breaking changes
|
|
----------------
|
|
|
|
* `Engine::compile_XXX` functions now return `ParseError` instead of `Box<ParseError>`.
|
|
* The `RegisterDynamicFn` trait is merged into the `RegisterResultFn` trait which now always returns `RhaiResult`.
|
|
* Default maximum limit on levels of nested function calls is fine-tuned and set to a different value.
|
|
* Some operator functions are now built in (see _Speed enhancements_ below), so they are available even under `Engine::new_raw`.
|
|
* Strings are now immutable. The type `rhai::ImmutableString` is used instead of `std::string::String`. This is to avoid excessive cloning of strings. All native-Rust functions taking string parameters should switch to `rhai::ImmutableString` (which is either `Rc<String>` or `Arc<String>` depending on whether the `sync` feature is used).
|
|
* Native Rust functions registered with the `Engine` also mutates the first argument when called in normal function-call style (previously the first argument will be passed by _value_ if not called in method-call style). Of course, if the first argument is a calculated value (e.g. result of an expression), then mutating it has no effect, but at least it is not cloned.
|
|
* Some built-in methods (e.g. `len` for string, `floor` for `FLOAT`) now have _property_ versions in addition to methods to simplify coding.
|
|
|
|
New features
|
|
------------
|
|
|
|
* Set limit on maximum level of nesting expressions and statements to avoid panics during parsing.
|
|
* New `EvalPackage` to disable `eval`.
|
|
* `Module::set_getter_fn`, `Module::set_setter_fn` and `Module:set_indexer_fn` to register getter/setter/indexer functions.
|
|
* `Engine::call_fn_dynamic` for more control in calling script functions.
|
|
|
|
Speed enhancements
|
|
------------------
|
|
|
|
* Common operators (e.g. `+`, `>`, `==`) now call into highly efficient built-in implementations for standard types (i.e. `INT`, `FLOAT`, `bool`, `char`, `()` and `ImmutableString`) if not overridden by a registered function. This yields a 5-10% speed benefit depending on script operator usage. Scripts running tight loops will see significant speed-up.
|
|
* Common assignment operators (e.g. `+=`, `%=`) now call into highly efficient built-in implementations for standard types (i.e. `INT`, `FLOAT`, `bool`, `char`, `()` and `ImmutableString`) if not overridden by a registered function.
|
|
* Implementations of common operators for standard types are removed from the `ArithmeticPackage` and `LogicPackage` (and therefore the `CorePackage`) because they are now always available, even under `Engine::new_raw`.
|
|
* Operator-assignment statements (e.g. `+=`) are now handled directly and much faster.
|
|
* Strings are now _immutable_ and use the `rhai::ImmutableString` type, eliminating large amounts of cloning.
|
|
* For Native Rust functions taking a first `&mut` parameter, the first argument is passed by reference instead of by value, even if not called in method-call style. This allows many functions declared with `&mut` parameter to avoid excessive cloning. For example, if `a` is a large array, getting its length in this manner: `len(a)` used to result in a full clone of `a` before taking the length and throwing the copy away. Now, `a` is simply passed by reference, avoiding the cloning altogether.
|
|
* A custom hasher simply passes through `u64` keys without hashing to avoid function call hash keys (which are by themselves `u64`) being hashed twice.
|
|
|
|
|
|
Version 0.14.1
|
|
==============
|
|
|
|
The major features for this release is modules, script resource limits, and speed improvements
|
|
(mainly due to avoiding allocations).
|
|
|
|
New features
|
|
------------
|
|
|
|
* Modules and _module resolvers_ allow loading external scripts under a module namespace. A module can contain constant variables, Rust functions and Rhai functions.
|
|
* `export` variables and `private` functions.
|
|
* _Indexers_ for Rust types.
|
|
* Track script evaluation progress and terminate script run.
|
|
* Set limit on maximum number of operations allowed per script run.
|
|
* Set limit on maximum number of modules loaded per script run.
|
|
* A new API, `Engine::compile_scripts_with_scope`, can compile a list of script segments without needing to first concatenate them together into one large string.
|
|
* Stepped `range` function with a custom step.
|
|
|
|
Speed improvements
|
|
------------------
|
|
|
|
### `StaticVec`
|
|
|
|
A script contains many lists - statements in a block, arguments to a function call etc.
|
|
In a typical script, most of these lists tend to be short - e.g. the vast majority of function calls contain
|
|
fewer than 4 arguments, while most statement blocks have fewer than 4-5 statements, with one or two being
|
|
the most common. Before, dynamic `Vec`'s are used to hold these short lists for very brief periods of time,
|
|
causing allocations churn.
|
|
|
|
In this version, large amounts of allocations are avoided by converting to a `StaticVec` -
|
|
a list type based on a static array for a small number of items (currently four) -
|
|
wherever possible plus other tricks. Most real-life scripts should see material speed increases.
|
|
|
|
### Pre-computed variable lookups
|
|
|
|
Almost all variable lookups, as well as lookups in loaded modules, are now pre-computed.
|
|
A variable's name is almost never used to search for the variable in the current scope.
|
|
|
|
_Getters_ and _setter_ function names are also pre-computed and cached, so no string allocations are
|
|
performed during a property get/set call.
|
|
|
|
### Pre-computed function call hashes
|
|
|
|
Lookup of all function calls, including Rust and Rhai ones, are now through pre-computed hashes.
|
|
The function name is no longer used to search for a function, making function call dispatches
|
|
much faster.
|
|
|
|
### Large Boxes for expressions and statements
|
|
|
|
The expression (`Expr`) and statement (`Stmt`) types are modified so that all of the variants contain only
|
|
one single `Box` to a large allocated structure containing _all_ the fields. This makes the `Expr` and
|
|
`Stmt` types very small (only one single pointer) and improves evaluation speed due to cache efficiency.
|
|
|
|
Error handling
|
|
--------------
|
|
|
|
Previously, when an error occurs inside a function call, the error position reported is the function
|
|
call site. This makes it difficult to diagnose the actual location of the error within the function.
|
|
|
|
A new error variant `EvalAltResult::ErrorInFunctionCall` is added in this version.
|
|
It wraps the internal error returned by the called function, including the error position within the function.
|