adds changes for `element` constraint implementation - 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 changes for `element` constraint implementation #74

Closed desaikd closed 2 years ago

desaikd commented 2 years ago

Issue #9 #10

Description of changes: This PR works on adding implementation of element constraint.

Grammar:

<ELEMENT> ::= element: <TYPE_REFERENCE>

Ion Schema specification: https://amzn.github.io/ion-schema/docs/spec.html#element

List of changes:

adds Elemnt enum variants for IslConstraint and Constraint
adds ElementConstraint implementations
adds validation logic for element
adds ViolationCode::ElementMismatched enum variant
adds unit tests for element

Tests: added unit tests for element implementation.

adds tests for programmatically creating element constraint
adds tests for loading a schema using element constraint
adds validation test for element constraint