Proof Portal

Projects

jsonparser

ProbeLabs23 findings · 123 requirements

The fastest JSON parser for Go — formally verified with ReqProof (real library, master).

All requirements
RequirementSYS-REQ-033SystemReview

When Delete is called with a provided path and the addressed target exists in usable input, the parser shall return the JSON document with that target removed.

Automated checks pass.
PriorityshallTypeguaranteeCategoryfunctionalComponentparserAssuranceEFindingsnone open

Specification

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

Description

When Delete is called with a provided path and the addressed target exists in usable input, the parser shall return the JSON document with that target removed.

FRETish formula
the parser shall always satisfy !delete_path_is_provided | !delete_target_exists | delete_returns_document_without_target
View full formal model

Rationale & tags

Why this requirement exists, and how it is categorised.

Successful deletion of an existing target is a distinct API behavior from no-path handling, missing-target preservation, and unusable-input robustness.

decompositiondeletemutation

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
Leonidbugaev
Reviewed
Apr 23, 2026, 00:00 UTC

History

Created
Apr 14, 2026, 15:45 UTC · Codex · AI agent
Modified
Apr 14, 2026, 15:45 UTC · Codex · AI agent

Change history

Every recorded revision of this requirement's source file — newest first, each with its commit message and the diff for that change.

Every recorded revision of this object's source — newest first, each with the commit message and its file-level diff.

Obligations

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

No obligations recorded for this requirement

Proof obligations are recorded once evidence is generated. None have been captured here yet — this is expected, not a gap in the requirement itself. A required class of evidence the requirement must witness — the bridge between the requirement existing and it being proven.

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 !delete_path_is_provided | !delete_target_exists | delete_returns_document_without_target

Variables

NameTypeDirectionDescription
delete_path_is_providedTrue when Delete is called with at least one path segment.
delete_target_existsTrue when the addressed Delete target exists and can be isolated in the input JSON.
delete_returns_document_without_targetTrue when Delete returns the JSON document with the addressed value removed.

Witnesses· 4 scenarios total

  • TestMCDC_SYS_REQ_033_Row1_TriggerFalse
    exercises 1 condition scenario
  • TestMCDC_SYS_REQ_033_Row2_MissingTarget
    exercises 1 condition scenario
  • TestMCDC_SYS_REQ_033_Row3_InvariantViolation
    exercises 1 condition scenario
  • TestDelete
    exercises 1 condition scenario

MC/DC truth table· 4 rows

Each row assigns the formula's conditions (T/F) and shows the Result— the formula's value for that input row, not a test pass/fail. A row proves a condition when flipping only that condition flips the outcome. The test that covers each row is linked.

Covereda test exercises this rowExempteda reviewed mcdc:ignoreNo-actionfalse-result row satisfied by designUncoveredneeds a covering test
#delete_path_is_provideddelete_returns_document_without_targetdelete_target_existsResultProvesCovering test
1FFTTdelete_path_is_provided
2TFFTdelete_target_exists
3TFTFdelete_path_is_provided
4TTTTdelete_returns_document_without_target

Its place

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

Loading graph…

Trace evidence

The concrete artifacts linked to this requirement — implementing code, verifying tests, documents, and the findings raised against it.

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
1
Tests
2
At-risk contracts
0

Files to re-check (1)

  • parser.goparser.go

Tests to re-run (2)

  • mcdc_spec_witnesses_test.gomcdc_spec_witnesses_test.go
  • parser_test.goparser_test.go

What this rests on

Changes

Semantic changes that move or scope this requirement — the intended work touching it. Each links to the full change.

Discussions

Discuss this with the proof team. Nothing changes in your audit automatically — you open a request and a staff member records any outcome inside the thread.

Sign in to discuss this with the proof team.Sign in