expressive/CHANGELOG.md

Change Log

Unreleased

Notes

Added

• Iterator over all identifiers within an expression, including duplicates
• Iterators over only variable or only function identifiers within an expression, including duplicates
• Overload the + operator to concatenate strings
• Overload <, <=, > and >= for strings using lexical ordering (Note: == and != compare strings as expected)
• Add len, str::regex_matches, str::regex_replace, str::to_lowercase, str::to_uppercase, str::trim functions for strings
• Add a macro for more convenient definition of contexts including the direct definition of static contexts
• Add API for value decomposition
• Allow using context operations in eval calls without context
• Operator assignment operators for each binary operation (+=, -=, ...)

Removed

• Function arguments are not decomposed anymore. The function implementation will receive exactly one argument now. This allows the function to be called on a tuple properly.

Changed

• Operators are an enum now instead of trait objects
• Update to Rust 2018

Fixed

• Allow variable assignments in eval calls without context. A HashMapContext is created automatically now.
• The error string for ExpectedNumber was wrong

Deprecated

Contributors

My warmhearted thanks goes to

• bittrance
• lovasoa
• mestachs

4.1.0 - 2019-03-31

Added

• Export expect_function_argument_amount

4.0.0 - 2019-03-30

Added

• String constants

3.1.0 - 2019-03-28

Added

• Add serde support to HashMapContext
• Make HashMapContext derive Default and Debug

Changed

• Changed name of serde feature flag to serde_support

3.0.0 - 2019-03-28

Notes

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 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

• Merge ContextMut trait into Context trait

2.0.0 - 2019-03-28

Notes

The 2.0.0 update is the first step to transform evalexpr to a tiny scripting language with support of at least variable assignment. The main change for now is that Configuration is called Context, which seems to be a more proper naming for a set of variables that can not only be read, but also manipulated via expressions. This update includes further renamings and some inconsistencies in the API were fixed. For more details, see the following subsections.

Added

• Add the ContextMut trait, that is a manipulable configuration/context
• Add ContextNotManipulable error variant for the EmptyContext
• Make the TupleType alias public
• Add the ValueType enum that represents the type of a value for easier comparisons and matchings
• Add EvalexprResult<T> type that uses the EvalexprError type (renamed from Error)
• Add Node::eval_number and Node::eval_number_with_context to evaluate to int or float and silently converting to float
• Add eval_number and eval_number_with_context crate methods to evaluate to int or float and silently converting to float

Changed

• Get rid of some unwraps to improve safety
• Rename Error to EvalexprError
• Rename Configuration to Context
• Rename HashMapConfiguration to HashMapContext and EmptyConfiguration to EmptyContext
• Rename Value::as_float to Value::as_number and add new Value::as_float that fails if value is an integer

1.2.0 - 2019-03-23

Added

• Add serde feature
• Implement serde::de::Deserialize for Node
• Document serde usage
• Add custom error type with a String message

Changed

• Highlighting in documentation

1.1.0 - 2019-03-20

Added

• Internal aliases IntType and FloatType used by the Value enum are now public
• Type alias TupleType used to represent tuples was added
• Error types like Error::ExpectedInt for expecting each value type were added
• Shortcut functions like eval_int or eval_int_with_configuration to evaluate directly into a value type were added
• Documentation for the shortcut functions was added
• Functions to decompose Values were added and documented

Removed

• Integration tests were removed from shipped crate

Fixed

• Wording of some documentation items was changed to improve readability

1.0.0 - 2019-03-20

• First stable release