Added rng model generation

[HassanAkbar]

fixes #9

[Copilot]

Pull request overview

This PR adds RELAX NG (RNG) schema compilation support to generate Lutaml model classes from RNG grammars (fixes #9), and refactors the existing XSD compiler into a shared “definitions + renderers + compiled output” architecture that can be reused by multiple schema compilers.

Changes:

• Add Schema.from_relaxng entry point and implement Lutaml::Model::Schema::RngCompiler with fixtures and documentation.
• Refactor XSD compilation to emit Definitions::* specs and render via shared Renderers::*, with shared CompiledOutput, FileWriter, ClassLoader, and RegistryGenerator infrastructure.
• Introduce shared templates (Schema::Templates) and namespace naming helpers reused across schema compilers.

Reviewed changes

Copilot reviewed 92 out of 92 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
Gemfile	Adds rng dependency via git for development/tests.
README.adoc	Documents RELAX NG schema compilation and usage patterns.
lib/lutaml/xml.rb	Registers Schema.from_relaxng method and delegates to RngCompiler.
lib/lutaml/model/utils.rb	Adds Utils.last_of_split helper.
lib/lutaml/model/schema.rb	Autoloads new shared schema infrastructure, definitions, renderers, and RNG compiler.
lib/lutaml/model/schema/class_loader.rb	New shared loader to write compiled output to temp dir and load via registry.
lib/lutaml/model/schema/compiled_output.rb	New shared compilation output container for models/namespaces and rendered sources.
lib/lutaml/model/schema/file_writer.rb	New shared writer for namespaced/flat output plus registry generation.
lib/lutaml/model/schema/module_nesting.rb	New helper for module wrapper emission.
lib/lutaml/model/schema/namespace_naming.rb	New helper to derive namespace class names/prefixes from URI.
lib/lutaml/model/schema/registry_generator.rb	New base registry generator used by compilers.
lib/lutaml/model/schema/templates.rb	New shared ERB templates for generated classes/types/namespaces.
lib/lutaml/model/schema/definitions.rb	New autoload entrypoint for schema definition objects.
lib/lutaml/model/schema/definitions/attribute.rb	New definition type for attributes/elements.
lib/lutaml/model/schema/definitions/choice.rb	New definition type for choice blocks.
lib/lutaml/model/schema/definitions/facet.rb	New definition type for restriction facets.
lib/lutaml/model/schema/definitions/group_import.rb	New definition type for XSD group imports in members.
lib/lutaml/model/schema/definitions/member_walk.rb	New traversal helper for heterogeneous member trees.
lib/lutaml/model/schema/definitions/model.rb	New definition type for generated Serializable models.
lib/lutaml/model/schema/definitions/namespace.rb	New definition type for XML namespace classes.
lib/lutaml/model/schema/definitions/restricted_type.rb	New definition type for restricted simple types.
lib/lutaml/model/schema/definitions/sequence.rb	New definition type for sequences.
lib/lutaml/model/schema/definitions/simple_content.rb	New XSD simpleContent sidecar definition.
lib/lutaml/model/schema/definitions/transform_facet.rb	New XSD-only transform facet definition.
lib/lutaml/model/schema/definitions/type_ref.rb	New type reference wrapper definition.
lib/lutaml/model/schema/definitions/union_type.rb	New definition type for union value types.
lib/lutaml/model/schema/definitions/xml_root.rb	New definition type describing XML root directive kind/name.
lib/lutaml/model/schema/renderers.rb	New autoload entrypoint for renderers.
lib/lutaml/model/schema/renderers/member_decls.rb	Renders attribute declarations from definitions.
lib/lutaml/model/schema/renderers/mappings.rb	Renders XML mapping blocks from definitions.
lib/lutaml/model/schema/renderers/model.rb	Renders Definitions::Model to Ruby source using shared templates.
lib/lutaml/model/schema/renderers/namespace.rb	Renders Definitions::Namespace to Ruby source.
lib/lutaml/model/schema/renderers/registration.rb	Renders register/register_class_with_id boilerplate.
lib/lutaml/model/schema/renderers/required_files_calculator.rb	Computes dependencies/require lines for generated models.
lib/lutaml/model/schema/renderers/restricted_type.rb	Renders restricted types to Ruby source.
lib/lutaml/model/schema/renderers/union.rb	Renders union types to Ruby source.
lib/lutaml/model/schema/rng_compiler.rb	New RNG compiler orchestrator (parse, compile, output).
lib/lutaml/model/schema/rng_compiler/define_classifier.rb	Classifies defines into restricted/union vs structural models.
lib/lutaml/model/schema/rng_compiler/element_visitor.rb	Walks RNG AST to build model/type definitions.
lib/lutaml/model/schema/rng_compiler/member_collector.rb	Scratch accumulator for choice/group member collection.
lib/lutaml/model/schema/rng_compiler/rng_helpers.rb	Centralized RNG AST helper predicates and facet builders.
lib/lutaml/model/schema/rng_compiler/value_type_resolver.rb	Resolves leaf value types (primitive/ref/anonymous restrictions).
lib/lutaml/model/schema/xml_compiler.rb	Refactors XSD compilation to use SpecBuilder + shared output infrastructure.
lib/lutaml/model/schema/xml_compiler/element_order.rb	New helper for resolved traversal order of XSD AST nodes.
lib/lutaml/model/schema/xml_compiler/registry_generator.rb	Updates XSD registry generator to subclass shared base and add phases.
lib/lutaml/model/schema/xml_compiler/spec_builder.rb	New XSD SpecBuilder orchestrating two-pass collection/build.
lib/lutaml/model/schema/xml_compiler/supported_data_types.rb	New built-in XSD type table module.
lib/lutaml/model/schema/xml_compiler/spec_builder/complex_types.rb	New XSD complex-type builder producing model specs.
lib/lutaml/model/schema/xml_compiler/spec_builder/members.rb	New XSD member builder producing attribute/sequence/choice/group specs.
lib/lutaml/model/schema/xml_compiler/spec_builder/simple_types.rb	New XSD simple-type builder producing restricted/union specs.
lib/lutaml/model/schema/xml_compiler/attribute.rb	Removed legacy XSD compiler implementation (superseded by definitions/renderers).
lib/lutaml/model/schema/xml_compiler/attribute_group.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/choice.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/complex_content.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/complex_content_restriction.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/complex_type.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/element.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/group.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/restriction.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/sequence.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/simple_content.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/simple_type.rb	Removed legacy XSD compiler implementation.
lib/lutaml/model/schema/xml_compiler/xml_namespace_class.rb	Removed legacy XSD namespace class generator (replaced by shared definitions/renderers).
spec/lutaml/model/utils_spec.rb	Adds coverage for Utils.last_of_split.
spec/lutaml/xml/schema/compiler_spec.rb	Updates XSD compiler spec expectations to new TypeRef / builder structure.
spec/lutaml/model/schema/renderers/model_spec.rb	New renderer unit tests for model rendering.
spec/lutaml/model/schema/renderers/namespace_spec.rb	New renderer unit tests for namespace rendering.
spec/lutaml/model/schema/renderers/restricted_type_spec.rb	New renderer unit tests for restricted type rendering.
spec/lutaml/model/schema/renderers/union_spec.rb	New renderer unit tests for union rendering.
spec/fixtures/xml/schema/rng/address_book.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/book.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/fixed_value.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/full_name.rng	New RNG fixture (issue #9 regression).
spec/fixtures/xml/schema/rng/integer_range.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/list_type.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/namespaced.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/paragraph.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/person.rng	New RNG fixture.
spec/fixtures/xml/schema/rng/union.rng	New RNG fixture.
spec/lutaml/xml/schema/compiler/attribute_group_spec.rb	Removes legacy unit spec (superseded by new architecture tests).
spec/lutaml/xml/schema/compiler/attribute_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/choice_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/complex_content_restriction_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/complex_content_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/complex_type_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/element_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/group_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/restriction_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/sequence_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/simple_content_spec.rb	Removes legacy unit spec.
spec/lutaml/xml/schema/compiler/simple_type_spec.rb	Removes legacy unit spec.

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