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Sebastian Schmidt 2019-03-28 11:55:27 +01:00
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CHANGELOG.md
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@ -4,16 +4,21 @@
### Notes
The 3.0.0 update includes further breaking changes that are necessary to allow assignments and chaining of expressions.
Rust does not allow trait objects to be converted into one another, even if one requires the other, so `ContextMut` had to be merged into `Context` for a more generic implementation of the (internal) `Operator` trait.
The 3.0.0 update transforms the expression evaluator `evalexpr` to a tiny scripting language.
It allows assignments and chaining of expressions.
Some changes in this update are breaking, hence the major release.
### Added
* Methods `Node::eval_<type>_with_context_mut`
* Methods `Node::eval_<type>_with_context_mut` and crate level `eval_<type>_with_context_mut`
* Empty type and corresponding shortcut methods. The empty type is emitted by empty expressions or empty subexpressions `()`.
* The assignment operator `=`
* The expression chaining operator `;`
### Removed
* Generic arguments from `Context` traits are now static to allow using trait objects of `Context`
* `EvalexprError::EmptyExpression` is not required anymore since empty expressions now evaluate to the empty type
### Changed