adds implementation of `exponent` constraint for ISL 2.0 - Githubissues

amazon-ion / ion-schema-rust

Rust implementation of Ion Schema

https://amazon-ion.github.io/ion-schema/sandbox

Apache License 2.0

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adds implementation of `exponent` constraint for ISL 2.0 #155

Closed desaikd closed 1 year ago

desaikd commented 1 year ago

Description of changes:

This PR works on adding implementation of exponent constraint.

Grammar:

<EXPONENT> ::= exponent: <INT>
             | exponent: <RANGE_INT>

Ion Schema specification:

https://amazon-ion.github.io/ion-schema/docs/isl-2-0/spec#exponent

List of changes:

adds changes for exponent constraint implementation
adds Exponent enum variants for IslConstraintImpl and Constraint
adds ExponentConstraint implementations
adds validation logic for exponent
adds changes for Range to expect only List types while parsing from ISL.
adds changes for Integer ranges to return error for empty ranges for which there aren't any valid values. (e.g. range::[exclusive::2, exclusive::3])

Tests:

added unit tests for exponent implementation.

adds tests for programmatically creating exponent constraint
adds tests for loading a schema using exponent constraint
adds validation tests for exponent constraint
adds test runner changes for exponent tests

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.