Function modifier rework

[Efnilite]

Problem

Parameter modifiers previously did not have proper support for containing data within a modifier, requiring messy code to make it work. Additionally, modifiers that defined constraints (such as RangedModifier) required internal changes to check values, thereby not allowing any addon from registering a custom modifier.

Signature modifiers, such as a function being local or returning a value, were previously dictated by fields in the Signature class. To allow for easier future expansion, signature modifiers have been migrated to use the same system as parameter modifiers.

Solution

Parameters

• Added support for custom modifiers.
• Made modifiers instances instead of static variables. This allows each instance to contain data specific to the function.
• Added support for Constraint parameter modifiers, which check parameter values and deny function execution if a parameter value is invalid.

Signature

• Added support for custom modifiers.
• Added custom modifiers to DefaultFunction builder.

Priority

• Added isBefore, isEqual, isAfter for simpler priority comparisons.

Parameters.java

• Updated for future PRs.

Testing Completed

Added ParameterTest and SignatureTest for testing toFormattedString, and existing tests.

Supporting Information

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Completes: none
Related: none
AI assistance: none