Static code analysis to catch semantic errors

Issue description

Currently "semantic" errors can only be caught during runtime. This creates two points of friction: - During development of new functions changes are very frequent and since system are often already productive at that point users are inhibited in their productivity. - When adjusting an existing store or a module to fit the needs of a new project, changes are often numereous and errors are introduced due to model changes.

Developer comments

A "semantic" error is any premature termination (exception or fatal error) of a PHP runtime while store specific code is currently executed. Shorter: A "semantic" error is any PHP runtime error caused by store code.

The basic infrastructure and checks are implemented and already helpful. But this issue is much larger and thus will be split up into several sub issues.

Use cases

This should be caught upon saving: [%function compute_to_cc(?string $alt_email = null): array { if ($alt_email === null) { return [ $this->get_email_address(), $this->get_all_email_address_cc()->to_array() ]; } return [$to, []]; }%] %$to% should be %$alt_email%.

This should be caught upon saving: [%$data[txt("delivery_date")] = format_date($load->comute_delivery_date());%] %comute% should be %compute%.

[% if ($this->has_receipt() === fale) { ;%] %fale% should be %false%.

Reporting date

2026-01-16

Reported by

Robert Cerny

Planned for version

Topincs 10.1.0 – next release

Sub issues3

Static analysis for classes and domain classes in particular(Enhancement)

Static analysis in templates(Enhancement)

Static analysis for signatures(Enhancement)

Related to

Static code analysis for public Topincs API(Enhancement)

Caused

Saving fails after removing lines containing an error message(Bug)

Work sessions9

Start	2026-05-19T06:30:00
End	2026-05-19T11:53:34
Participant	Robert Cerny

Start	2026-05-20T07:30:00
End	2026-05-20T08:40:06
Participant	Robert Cerny

Start	2026-05-20T20:36:26
End	2026-05-20T22:08:36
Participant	Robert Cerny

Start	2026-05-22T06:33:55
End	2026-05-22T09:39:25
Participant	Robert Cerny

Start	2026-05-22T16:18:12
End	2026-05-22T16:35:13
Participant	Robert Cerny

Start	2026-05-22T19:04:19
End	2026-05-22T20:25:51
Participant	Robert Cerny

Start	2026-05-25T09:38:49
End	2026-05-26T11:03:14
Participant	Robert Cerny

Start	2026-05-26T08:03:23
End	2026-05-26T11:35:35
Participant	Robert Cerny

Start	2026-05-26T13:00:00
End	2026-05-26T14:23:22
Participant	Robert Cerny