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SYS-REQ-055SystemReview

When ArrayEach encounters a malformed delimiter between array elements (e.g., '[1; 2]' or '[1 2]' where a comma is expected but a different character or no delimiter is found), the parser shall return a MalformedArrayError.

PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

The requirement exactly as authored — its complete prose text and, where present, the formal FRETish sentence it compiles to.

Description

When ArrayEach encounters a malformed delimiter between array elements (e.g., '[1; 2]' or '[1 2]' where a comma is expected but a different character or no delimiter is found), the parser shall return a MalformedArrayError.

FRETish formula
the parser shall always satisfy !array_has_malformed_delimiter | returns_error_for_malformed_array_delimiter

Rationale & tags

Why this requirement exists, and how it is categorised.

Malformed delimiters between elements are a distinct malformed-input subclass from missing closing brackets and from truncated elements.

arrayeachmalformeddelimiter

Verification & provenance

How this requirement was checked: the review trail, edit history, and the machine-analysis status terms (each ⓘ explains what it means).

Assurance levelE
Formalizationvalid
Realizabilityrealizable
Vacuitychecked_ok
Strategyfretish

Review

Status
approved
Reviewer
human:leonidbugaev
Reviewed
Apr 23, 2026, 00:00 UTC

History

Created
Apr 14, 2026, 18:00 UTC · agent:claude
Modified
Apr 14, 2026, 18:00 UTC · agent:claude

Obligations

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No obligations recorded for this requirement

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Formula evidence

The formal formula behind this requirement, the variables it is written over, and the tests that exercise it (each term is explained inline).

FRETish formula

the parser shall always satisfy !array_has_malformed_delimiter | returns_error_for_malformed_array_delimiter

Variables

NameTypeDirectionDescription
array_has_malformed_delimiterTrue when ArrayEach encounters a malformed delimiter between array elements where a comma is expected but absent or wrong.
returns_error_for_malformed_array_delimiterTrue when ArrayEach returns MalformedArrayError for a malformed delimiter between array elements.

Witnesses· 3 scenarios total

  • TestArrayEachMalformedDelimiter
    deep_spec_test.go:430
  • TestMCDC_SYS_REQ_055_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:1928exercises 1 condition scenario
  • TestMCDC_SYS_REQ_055_Row2_InvariantViolation
    mcdc_spec_witnesses_test.go:1942exercises 1 condition scenario
  • TestMCDC_SYS_REQ_055_Row3_MalformedError
    mcdc_spec_witnesses_test.go:1950exercises 1 condition scenario

Its place

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Trace evidence

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Impact

Blast radius — if you change this requirement, what else may need re-checking, and what it in turn depends on.

If you change this

Requirements
0
Files
2
Tests
2
At-risk contracts
0

Files to re-check (2)

  • aliases.goaliases.go
  • parser.goparser.go

Tests to re-run (2)

  • deep_spec_test.godeep_spec_test.go
  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go

What this rests on

Discussions

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