Skip to content

Latest commit

 

History

History
101 lines (73 loc) · 3.22 KB

CHANGELOG.md

File metadata and controls

101 lines (73 loc) · 3.22 KB
Raw

1.5.1

  • Increased upper SDK constraint to declare support for Dart 3
  • Documentation fixes

1.5.0

Breaking changes

  • Now the ' symbol is allowed for variable and function names so you can have variables like y'.

Equations

  • Implemented >= and <=.

1.4.0

Custom Functions

  • Define custom functions and redefine built-in functions when parsing an expression. See docs and example.
  • Use MathNodeExpression.getPotentialFunctionNames() to detect potentially used functions in a string.
  • Use period in the middle of custom variable and function names.
  • Under-hood, functions now support multiple comma separated arguments, so you can supply multiple arguments to your custom function.
  • Detect custom functions im math tree using MathExpression.getUsedFreeformFunctions().

Breaking Changes

  • MissingFunctionArgumentListException renamed to OutOfRangeFunctionArgumentListException
  • MathNodeExpression.fromString() may throw other errors besides MathException
  • MathNodeExpression.getPotentialVariableNames() is replaced by MathNodeExpression.getPotentialDefinable()
  • Instead of log[base](arg), you should pass log(base, arg) syntax now
  • Period is an allowed character in the middle of a variable name now

Misc.

  • UnexpectedClosingBracketException and BracketsNotClosedException can now tell where the problem probably happened.
  • New MathParseException's InvalidFunctionNameException, DuplicateDeclarationException, InvalidFunctionArgumentsDeclaration.

1.3.1

  • Variable validation fix

1.3.0

Math Tree

  • Important change: MathNode is now a class of MathExpression interface. Compared to MathNode, MathExpression may return null in calc() method.
  • New: getUsedVariables() method for MathExpression and MathNode. This method goes down the math tree to find any uses of MathVariable and returns names of all variables.
  • New: MathExpression object family - MathComparison:
    • MathComparisonEquation (=)
    • MathComparisonGreater (>)
    • MathComparisonLess (<)

Parsing

  • New: MathNodeExpression.fromStringExtended() method allows you to interpret equations and comparisons. Compared to fromString, it returns MathExpression instead of MathNode, since comparisons can't guarantee result.
  • New: MathNodeExpression.getPotentialVariableNames() analyzes given math expression string for possible use of variables. Refer to documentation for rough edges before using it.
  • New: MathNodeExpression.builtInVariables gives a list of built-in predefined variable names.
  • New: MathNodeExpression.isVariableNameValid() lets you check if the parser can work with a given name.

Misc.

  • Changed input parameters type for CantProcessExpressionException.
  • Small documentation fixes.

1.2.0

  • Fix README.
  • Moved integrating features to a separate package library math_parser_integrate.

1.1.0

  • Custom variables support.
  • MathFunctionXdeprecated.
  • MathVariable introduced.
  • You need to pass an instance of MathVariableValues instead of a num to the calc() function now.

1.0.0

  • Initial version.