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CHANGELOG.md

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RPNlib change log

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

[0.24.2] XXXX-XX-XX

Changed

  • Use linked list for variables, replacing vector
  • Use linked list for operators, replacing vector. Ensure we don't over-reserve space when new operators are added.

Fixed

  • Make sure we copy current stack reference with the object itself
  • Context error position is now relative to the start of the input string
  • Assignment operator now able to handle moved values

[0.24.1] 2020-08-10

Changed

  • Faster parsing for strings without escape sequences
  • Rework internal token buffering

[0.24.0] 2020-08-08

Added

  • Support escaped \n, \t, \r, \xFF in strings used in expressions
  • position member of the context's error object, which will be set by rpn_process()
  • For floats in expressions, either integral or fractional part can be omitted when equal to 0. But, not both at the same time.
  • Add i and u suffix for integral numbers in expressions, changing default type from Float to Integer or Unsigned respectively
  • Add rpn_value::checkedToInt(), rpn_value::checkedToFloat() and rpn_value::checkedToUint() that return error when conversion fails
  • Add inf and nan operators

Changed

  • Preserve variable reference after ifn
  • Allow negative offsets for index
  • rpnlib_util.h is included automatically
  • eq will try to compare floating point numbers by comparing values distance with type's epsilon

Fixed

  • Parser no longer uses fuzzy matching for built-ins, avoiding conflict with operators
  • Parser no longer uses fuzzy matching for numbers written in scientific notation
  • Parser accepts more characters as end of the token, in addition to the space ( ): newline (\n), carriage return (\r), horizontal tab (\t), vertical tab (\v)
  • Fix incorrect casts between int / uint / float when calculating numeric limits

[0.23.0] 2020-07-26

Added

  • p operator to print the top of the stack via debug function
  • &var syntax to create variable reference in expression
  • = operator for variable assignment in expression
  • exists operator to check for variable existance (only for references)
  • deref operator to convert variable reference into a value (only for references)
  • Allow to use either float or double as floating type, parse numbers in expressions as specified type
  • Add boolean type, parse true and false in expressions
  • Add null type, parse null in expressions
  • Add string type, parse double-quoted "string" in expressions
  • Add integer and unsigned integer type, used in operators
  • Allow to configure underlying types from rpnlib_config.h and -D... flags
  • Return rpn_error from operators, split error types into categories
  • Create a new stack by using [ keyword. Move stack contents into the previous stack + size by using ].

Changed

  • Stack structure no longer holds raw float, but internal rpn_value type
  • rpn_... setter and getter methods use rpn_value type
  • Operator functions return rpn_error type, allowing to return both value and operator errors
  • Variables in expressions are no longer required to exist when using &var Expression will automatically create the variable, set it to null and push it's reference on the stack
  • It is possible to create 'reference' stack values
  • Improve precision of e and pi

Fixed

  • Proper value for e constant
  • Allow to use multiple contexts simultaniously, replace rpn_error and rpn_debug_callback with the current rpn_context members error and debug_callback respectively

[0.3.0] 2019-05-24

Added

  • Added abs operator

Changed

  • Change compare operators to eq, ne, gt, ge, lt, le

[0.2.0] 2019-05-24

Added

  • rpn_process will (optionally) fail if variable does not exist

Fix

  • rpn_variable_set will replace value if variable already exists

[0.1.0] 2019-05-23

Fixed

  • Clear context and memory leak fix

Added

  • Added more comparison operators (cmp, cmp3, index, map, constrain)
  • Added casting methods (round, ceil, floor)
  • AUnit testing
  • Keywords file

Changed

  • Do not compile with advanced math support by default
  • Renamed 'if' to 'ifn' (numeric if)

[0.0.2] 2018-12-24

Added

  • Remote testing using Travis and PIO Plus
  • Examples and more commmands

Changed

  • Renamed 'rpn_begin' to 'rpn_init'
  • Variables now start with $ sign

[0.0.1]

Initial version