Codebase metrics

A measured snapshot of the Domain Path codebase and its submodules, counted with cloc. Charts show code lines (blank and comment lines excluded) unless stated otherwise.

Snapshot

Measured on the 3.x branch, 2026-10-22, with cloc 2.08. 98 files, 5,883 lines of code, 2,590 comment lines, 1,402 blank (9,875 lines in total). See Methodology to reproduce.

At a glance

Code	Comment	Blank	Files	Production	Test
5,883	2,590	1,402	98	2,963	2,920

Production vs test

Domain Path ships 2,920 lines of test code backing 2,963 lines of production code, a 99% test-to-production ratio.

Lines by language

Language	Code	Comment	Blank	Files
PHP	4,906	2,541	1,214	75
Markdown	463	0	181	6
CSS	258	0	0	1
YAML	218	49	7	12
Text	19	0	0	2
JSON	16	0	0	1
SVG	3	0	0	1

Composition

Across all languages, code is 60% of the lines, comments 26%, and blank lines 14%. The comment share reflects Drupal's docblock conventions.

By submodule

Production (brass) and test (steel) code per submodule, largest first.

Submodule	Production	Test	Total
domain_path (core)	2,321	2,038	4,359
domain_path_pathauto	642	882	1,524

Test suite

Domain Path ships 35 automated test classes (95 test methods), counted by type below.

Test type	Classes	Methods
Functional	17	21
Kernel	16	69
FunctionalJavascript	2	5
Unit	0	0
Total	35	95

Architecture surface

What the module contains, counted across Domain Path and its submodules: the Drupal building blocks (services, plugins, hooks, routes, entities) that make up its public and internal API.

Element	Count
Services	18
Event subscribers	0
Hook implementations	10
Routes	1
Permissions	1
Forms	2
Controllers	0
Content entity types	0
Config entity types	0
Config schema types	1
Plugins	11

Plugins break down by type as follows, largest first:

Methodology

Counts are produced with cloc, run from the project root over the files git ls-files reports, so a checkout that has installed vendor/, previewed the docs into site/ or pulled a node_modules/ counts the same as the archive a release ships. The Tugboat preview scaffolding in .tugboat/ is left out, and so is this page, because a page that counts itself changes the tree it just measured. The snapshot above names the cloc version, because cloc counts differently from one version to the next.

git ls-files | grep -v -e '^docs/metrics\.md$' -e '^\.tugboat/' > files.txt
cloc --list-file=files.txt

Each file is attributed to the nearest enclosing module (a directory with a *.info.yml); test-support modules under a tests/ path count as their parent's test code. A file is test code when its path contains a tests/ segment, production otherwise.

Test classes are counted by their directory under tests/src (Unit, Kernel, Functional, FunctionalJavascript); the method column counts each test-prefixed method, and each further one annotated @test or #[Test]. The architecture surface counts service definitions in *.services.yml (excluding aliases), route and permission keys in *.routing.yml and *.permissions.yml, #[Hook] attributes, plugin classes under src/Plugin/, forms and controllers under src/Form and src/Controller, entity-type attributes in src/Entity, and top-level types in config/schema/*.yml, all summed across the module and its submodules.

The charts are static inline SVG generated from the measured data, so they need no JavaScript or charting plugin. They are decorative and marked aria-hidden: every figure one of them draws is also in the table or the sentence beside it, so a screen reader gets the numbers rather than an image with no name. An img role carrying no accessible name is worse than no role at all, because it hides the labels inside the chart as well.