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Allow native overriding implementation of assignment operators.

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Stephen Chung
2020-05-27 13:22:10 +08:00
parent 24a93ef824
commit 854634afa0
4 changed files with 185 additions and 166 deletions
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45
README.md
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@@ -395,14 +395,15 @@ are supported.
### Built-in operators
| Operator | Supported for type (see [standard types]) |
| ---------------------------- | ----------------------------------------------------------------------------- |
| `+`, `-`, `*`, `/`, `%`, `~` | `INT`, `FLOAT` (if not [`no_float`]) |
| `<<`, `>>`, `^` | `INT` |
| `&`, `\|` | `INT`, `bool` |
| `&&`, `\|\|` | `bool` |
| `==`, `!=` | `INT`, `FLOAT` (if not [`no_float`]), `bool`, `char`, `()`, `ImmutableString` |
| `>`, `>=`, `<`, `<=` | `INT`, `FLOAT` (if not [`no_float`]), `char`, `()`, `ImmutableString` |
| Operators | Assignment operators | Supported for type (see [standard types]) |
| ------------------------ | ---------------------------- | ----------------------------------------------------------------------------- |
| `+`, | `+=` | `INT`, `FLOAT` (if not [`no_float`]), `ImmutableString` |
| `-`, `*`, `/`, `%`, `~`, | `-=`, `*=`, `/=`, `%=`, `~=` | `INT`, `FLOAT` (if not [`no_float`]) |
| `<<`, `>>`, `^`, | `<<=`, `>>=`, `^=` | `INT` |
| `&`, `\|`, | `&=`, `|=` | `INT`, `bool` |
| `&&`, `\|\|` | | `bool` |
| `==`, `!=` | | `INT`, `FLOAT` (if not [`no_float`]), `bool`, `char`, `()`, `ImmutableString` |
| `>`, `>=`, `<`, `<=` | | `INT`, `FLOAT` (if not [`no_float`]), `char`, `()`, `ImmutableString` |
### Packages
@@ -426,20 +427,20 @@ engine.load_package(package.get()); // load the package manually. 'g
The follow packages are available:
| Package | Description | In `CorePackage` | In `StandardPackage` |
| ---------------------- | -------------------------------------------------------------------------- | :--------------: | :------------------: |
| `ArithmeticPackage` | Arithmetic operators (e.g. `+`, `-`, `*`, `/`) for different numeric types | Yes | Yes |
| `BasicIteratorPackage` | Numeric ranges (e.g. `range(1, 10)`) | Yes | Yes |
| `LogicPackage` | Logical and comparison operators (e.g. `==`, `>`) | Yes | Yes |
| `BasicStringPackage` | Basic string functions | Yes | Yes |
| `BasicTimePackage` | Basic time functions (e.g. [timestamps]) | Yes | Yes |
| `MoreStringPackage` | Additional string functions | No | Yes |
| `BasicMathPackage` | Basic math functions (e.g. `sin`, `sqrt`) | No | Yes |
| `BasicArrayPackage` | Basic [array] functions | No | Yes |
| `BasicMapPackage` | Basic [object map] functions | No | Yes |
| `EvalPackage` | Disable [`eval`] | No | No |
| `CorePackage` | Basic essentials | | |
| `StandardPackage` | Standard library | | |
| Package | Description | In `CorePackage` | In `StandardPackage` |
| ---------------------- | ------------------------------------------------------------------------------------------------------ | :--------------: | :------------------: |
| `ArithmeticPackage` | Arithmetic operators (e.g. `+`, `-`, `*`, `/`) for numeric types that are not built in (e.g. `u16`) | Yes | Yes |
| `BasicIteratorPackage` | Numeric ranges (e.g. `range(1, 10)`) | Yes | Yes |
| `LogicPackage` | Logical and comparison operators (e.g. `==`, `>`) for numeric types that are not built in (e.g. `u16`) | Yes | Yes |
| `BasicStringPackage` | Basic string functions (e.g. `print`, `debug`, `len`) that are not built in | Yes | Yes |
| `BasicTimePackage` | Basic time functions (e.g. [timestamps]) | Yes | Yes |
| `MoreStringPackage` | Additional string functions, including converting common types to string | No | Yes |
| `BasicMathPackage` | Basic math functions (e.g. `sin`, `sqrt`) | No | Yes |
| `BasicArrayPackage` | Basic [array] functions (not available under `no_index`) | No | Yes |
| `BasicMapPackage` | Basic [object map] functions (not available under `no_object`) | No | Yes |
| `EvalPackage` | Disable [`eval`] | No | No |
| `CorePackage` | Basic essentials | Yes | Yes |
| `StandardPackage` | Standard library | No | Yes |
Packages typically contain Rust functions that are callable within a Rhai script.
All functions registered in a package is loaded under the _global namespace_ (i.e. they're available without module qualifiers).