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SYS-REQ-053SystemReview

When ArrayEach encounters an array element that is truncated (e.g., '[1, {"a":' where the second element is incomplete), the parser shall return a parse-related error and shall not panic.

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 an array element that is truncated (e.g., '[1, {"a":' where the second element is incomplete), the parser shall return a parse-related error and shall not panic.

FRETish formula
the parser shall always satisfy !array_is_truncated_mid_element | returns_error_for_truncated_array_element

Rationale & tags

Why this requirement exists, and how it is categorised.

Truncated mid-element iteration exercises different sentinel paths than completely missing closing brackets. The Get call inside the loop may return sentinel values.

arrayeachtruncation

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
Jul 26, 2026, 14:54 UTC · human:cli

Obligations

What this requirement must witness to be considered satisfied — the required evidence, and the tests that discharge each one.

1 obligation · 1 discharged

Browse the catalogue
Discharged
Worst case if violatedCritical

ArrayEach on [1,{"a": (truncated second element) advances i past EOF in the next iteration; an unchecked data[i] peek of the comma/delimiter panics with index-out-of-range.

Discharging evidence1/1 required witnessed
  • nominalrequiredpresent
    Covered by 1 test

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_is_truncated_mid_element | returns_error_for_truncated_array_element

Variables

NameTypeDirectionDescription
array_is_truncated_mid_elementTrue when ArrayEach encounters an array element that is truncated or incomplete.
returns_error_for_truncated_array_elementTrue when ArrayEach returns a parse-related error for a truncated array element, without panicking.

Witnesses· 3 scenarios total

  • TestArrayEachTruncatedMidElement
    deep_spec_test.go:402
  • TestMCDC_SYS_REQ_053_Row1_TriggerFalse
    mcdc_spec_witnesses_test.go:1859exercises 1 condition scenario
  • TestMCDC_SYS_REQ_053_Row2_InvariantViolation
    mcdc_spec_witnesses_test.go:1873exercises 1 condition scenario
  • TestMCDC_SYS_REQ_053_Row3_TruncatedError
    mcdc_spec_witnesses_test.go:1881exercises 1 condition scenario
  • TestObligation_SYS_REQ_053
    obligation_evidence_test.go:441

Its place

This requirement shown inside its trace neighbourhood — the parents it satisfies, the code and tests attached to it, and its findings.

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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
3
At-risk contracts
0

Files to re-check (2)

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

Tests to re-run (3)

  • deep_spec_test.godeep_spec_test.go
  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
  • obligation_evidence_test.goobligation_evidence_test.go

What this rests on

Discussions

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