Mihaela Mihaljevic 708390242c chore: scaffold PureXML pure-Swift XML package

Root Swift package mirroring PureYAML's structure, rules, and verification
gates. Includes the XML node model (Node, Element, Attribute, QualifiedName),
a working emitter (Serializer) with escaping and pretty/compact options, and
structural validation. The parser surface is stable; parse() raises
notImplemented until the scanner lands, pinned by a test.

- dependency-free, namespaced under PureXML
- portability and style gates carried over (style, namespacing, forbidden
  patterns, swiftformat, swiftlint, linux, wasm, windows CI)
- 11 tests passing

2026-06-07 23:20:20 +02:00

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Agent Guide

Guidance for anyone writing code in PureXML.

Rule Loading

At the start of a session, read this file and the rules under docs/rules/ that match the task. Confirm by replying with rules-loaded and name the files you loaded.

For code changes, load at minimum:

docs/rules/code-style.md
docs/rules/namespacing.md
docs/rules/cross-platform.md
docs/rules/testing.md
docs/rules/verification.md
docs/rules/commits.md

What PureXML Is

PureXML is a dependency-free XML package written entirely in Swift.

The package must stay:

pure Swift
root Swift package layout, with Package.swift at repository root
dependency-free
Linux-compatible
WebAssembly/WASI-compatible
namespaced under PureXML

The private PureXMLResearch repo is for studying reference XML implementations (libxml2/expat, Foundation's XMLParser, and the W3C XML 1.0 conformance suite). Do not copy C code or upstream parser source into this public package. Keep attribution in ATTRIBUTION.md accurate when compatibility work references those projects.

Compatibility work must start from that research source. Before changing parser, emitter, validation, or typed conversion behavior, inspect the matching PureXMLResearch source or fixture and use it only to define behavior and tests.

Namespace Rules

Every public type lives under the PureXML namespace tree and mirrors its folder:

Sources/Model/Node.swift declares PureXML.Model.Node
Sources/Parsing/Parser.swift declares PureXML.Parsing.Parser
Sources/Emitting/Serializer.swift declares PureXML.Emitting.Serializer
Sources/Validation/Validator.swift declares PureXML.Validation.Validator

No top-level public concrete types except the root public enum PureXML.

Dependency Rules

Package.swift must keep dependencies: [].

Do not add external packages, C targets, system libraries, Foundation-only workarounds, JavaScript tooling, or generated parser dependencies without an explicit maintainer decision.

Verification

Before claiming a change is complete, run and cite:

bash scripts/check-style.sh
bash scripts/check-namespacing.sh
bash scripts/check-forbidden-patterns.sh
swiftformat . --config .swiftformat --lint
swiftlint --config .swiftlint.yml --strict
swift build
swift test
bash scripts/check-wasm.sh

Enable local hooks:

git config core.hooksPath .githooks

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