Elements

graph TD; %% REQVIRE-AUTOGENERATED-DIAGRAM %% Graph styling classDef userRequirement fill:#D1C4E9,stroke:#7E57C2,stroke-width:2px; classDef systemRequirement fill:#E1D8EE,stroke:#673AB7,stroke-width:1.5px; classDef verification fill:#DCEDC8,stroke:#4CAF50,stroke-width:2px; classDef folder fill:#FAFAFA,stroke:#9E9E9E,stroke-width:3px; classDef file fill:#FFF8E1,stroke:#FFCA28,stroke-width:2px; classDef default fill:#F5F5F5,stroke:#424242,stroke-width:1.5px; subgraph 91eede421faaa553["📁 requirements/Functional/Operations"] subgraph efce051cd2e037ec["📄 Constraints.md"] 3e506d76554b3740["Merge Type Compatibility Constraint"]; class 3e506d76554b3740 default; click 3e506d76554b3740 "Constraints.html#merge-type-compatibility-constraint"; 1dc0e8b76789ffce["Target Location Constraint"]; class 1dc0e8b76789ffce default; click 1dc0e8b76789ffce "Constraints.html#target-location-constraint"; end end

Merge Type Compatibility Constraint

Type compatibility rules for merging elements.

Details

Main Type Categories:

  • Requirement types: requirement, user-requirement
  • Verification types: test-verification, analysis-verification, inspection-verification, demonstration-verification
  • Refinement types: constraint, behavior, specification
  • Other: Any element type not in above categories

Compatibility Rules:

  • Source and target must be in the same main type category
  • Subtype differences within a category are allowed (e.g., user-requirement can merge into requirement)
  • Merging across categories is forbidden (e.g., requirement cannot merge into verification)

Error Messages:

  • When incompatible: “Cannot merge {source_type} into {target_type}: type mismatch”

Metadata

  • type: constraint

Relations


Target Location Constraint

Validation rules for target paths in element operations.

Path Validation:

  • Path not excluded by .gitignore/.reqvireignore
  • Maximum 10 subdirectory nesting depth
  • Path must be accessible and writable

Auto-creation:

  • Create missing target files with # Elements header

Error Reporting:

  • Clear message indicating which constraint was violated

Metadata

  • type: constraint

Relations