# Package sdml-errors

Rust Library containing the error and diagnostic types for the Simple Domain
Modeling Language (SDML).

[![Crates.io](https://img.shields.io/crates/v/sdml_errors.svg)](https://crates.io/crates/sdml_errors)
[![Docs.rs](https://img.shields.io/docsrs/sdml-errors.svg)](https://docs.rs/sdml_errors)

This package is part of the Rust SDML project and specifically defines the error
and diagnostic types for the project. The project's intent is to provide an
idiomatic implementation of the in-memory model, parser, generators, and the CLI
tool.

The following figure demonstrates this package in the broader project context.

![Package Overview](https://raw.githubusercontent.com/sdm-lang/rust-sdml/refs/heads/main/doc/overview.png)

## Changes

### Version 0.4.0

* Update version to be consistent with new core language.

### Version 0.3.2

* Feature: add Tree-Sitter missing node error.

### Version 0.3.1

* Feature: add `LanguageTagError` variant for external error type.
* Feature: add `Template` variant for external error type.
  * put this behind a feature, it's not used in core, parser, etc.

### Version 0.3.0

* Build: align version number with `sdml-core` supporting the latest grammar.

### Version 0.1.6

* Feature: add a new variant in `Error`, `GeneratorError` for use by the
  `sdml-generator` crate.

### Version 0.1.5

* Feature: add new diagnostic for `IdentifierNotPreferredCase` where an identifier
  is not in the preferred case style for its usage.
  * Add new code to `ErrorCode`.
  * Add new function `identifier_not_preferred_case`.
  * Add new enum `IdentifierCaseConvention` used to identify the case style to
    enforce.

### Version 0.1.4

* Feature: improved a number of diagnostic help messages.
* Feature: added shared `UseColor` type.

### Version 0.1.3

* Feature: add new diagnostic for `DeprecatedTermUsed` where an identifier
  includes a term listed in a supplied `TermSet`.
  * Add new code to `ErrorCode`.
  * Add new function `deprecated_term_used`.

### Version 0.1.2

* Feature: add new diagnostic for `DoubleUnderscoredIdentifier` where an
  identifier include two (or more) consecutive underscore characters.
  * Add new code to `ErrorCode`.
  * Add new function `double_underscored_identifier`.

### Version 0.1.1

* Feature: add new diagnostic for `PropertyReferenceNotProperty` where the
  property name in a member does not resolve to a property definition.
  * Add new code to `ErrorCode`.
  * Add new function `property_reference_not_property`.

### Version 0.1.0

Initial Release.

* Error Handling:
  * Copy `error` module from `sdml_core`, rename as `errors`.
  * Remove diagnostics from the existing `Error` type.
* Diagnostics:
  * Copy `diagnostics` module.
  * Create new `diagnostics::codes` module and `ErrorCode` enum.
  * Create new `diagnostics::functions` module and functions for each `ErrorCode`.
* Diagnostic Reporting:
  * Create new `diagnostics::reporter` module.
  * Create new `Reporter` trait.
  * Create a `StandardStreamReporter` to emit colored and structured errors to the
    console.
  * Create a `BailoutReporter` that will turn the first diagnostic it is given
    into an error.