Enum DiagnosticCode 

pub enum DiagnosticCode {
    E001CircularSpecialization,
    E002ProfileWithoutRate,
    E003InfeasibleConstraint,
    R102InvertedRateRange,
    R104UnknownProfile,
    C001ZeroWorkingHours,
    C002NoWorkingDays,
    W001AbstractAssignment,
    W002WideCostRange,
    W003UnknownTrait,
    R012TraitMultiplierStack,
    W004ApproximateLeveling,
    W005ConstraintZeroSlack,
    W006ScheduleVariance,
    W007UnresolvedDependency,
    W014ContainerDependency,
    C010NonWorkingDay,
    C011CalendarMismatch,
    H001MixedAbstraction,
    H002UnusedProfile,
    H003UnusedTrait,
    H004TaskUnconstrained,
    C020LowAvailability,
    C021MissingCommonHoliday,
    C022SuspiciousHours,
    C023RedundantHoliday,
    I001ProjectCostSummary,
    I002RefinementProgress,
    I003ResourceUtilization,
    I004ProjectStatus,
    I005EarnedValueSummary,
    L001OverallocationResolved,
    L002UnresolvableConflict,
    L003DurationIncreased,
    L004MilestoneDelayed,
    P005RemainingCompleteConflict,
    P006ContainerProgressMismatch,
}

Diagnostic code identifying the specific diagnostic type

Codes are stable identifiers used for:

• Machine-readable output (JSON)
• Documentation references
• Suppression/filtering

Naming convention: {Severity prefix}{Number}{Description}

Variants

E001CircularSpecialization

Circular specialization in profile inheritance chain

E002ProfileWithoutRate

Profile has no rate and is used in cost-bearing assignments

E003InfeasibleConstraint

Task constraint cannot be satisfied (ES > LS)

R102InvertedRateRange

Rate range is inverted (min > max) - RFC-0004 R102

R104UnknownProfile

Unknown profile referenced in specialization - RFC-0004 R104

C001ZeroWorkingHours

Calendar has no working hours defined

C002NoWorkingDays

Calendar has no working days defined

W001AbstractAssignment

Task assigned to abstract profile instead of concrete resource

W002WideCostRange

Task cost range spread exceeds threshold

W003UnknownTrait

Profile references undefined trait

R012TraitMultiplierStack

Trait multiplier stack exceeds 2.0 - RFC-0004 R012

W004ApproximateLeveling

Resource leveling could not fully resolve all conflicts

W005ConstraintZeroSlack

Task constraint reduces slack to zero (now on critical path)

W006ScheduleVariance

Task is slipping beyond threshold (forecast > baseline)

W007UnresolvedDependency

Dependency references a task that does not exist

W014ContainerDependency

Container has dependencies but child task has none (MS Project compatibility)

C010NonWorkingDay

Task scheduled on non-working day

C011CalendarMismatch

Task and assigned resource use different calendars

H001MixedAbstraction

Task has both concrete and abstract assignments

H002UnusedProfile

Profile is defined but never assigned

H003UnusedTrait

Trait is defined but never referenced

H004TaskUnconstrained

Task has no predecessors or date constraints (dangling/orphan task)

C020LowAvailability

Calendar has low availability (< 40% working days)

C021MissingCommonHoliday

Calendar is missing common holiday

C022SuspiciousHours

Calendar has suspicious working hours (e.g., 24/7)

C023RedundantHoliday

Holiday falls on non-working day (redundant)

I001ProjectCostSummary

Project scheduling summary

I002RefinementProgress

Refinement progress status

I003ResourceUtilization

Resource utilization summary

I004ProjectStatus

Project status summary (overall progress and variance)

I005EarnedValueSummary

Earned value summary (EV, PV, SPI)

L001OverallocationResolved

Resource overallocation resolved by delaying task

L002UnresolvableConflict

Unresolvable resource conflict (demand > capacity after leveling)

L003DurationIncreased

Project duration increased due to leveling

L004MilestoneDelayed

Milestone delayed due to leveling

P005RemainingCompleteConflict

Explicit remaining conflicts with linear derivation from complete%

P006ContainerProgressMismatch

Container’s explicit progress conflicts with weighted children average

Implementations

impl DiagnosticCode

pub fn as_str(&self) -> &'static str

Returns the short code string (e.g., “E001”, “W002”)

pub fn default_severity(&self) -> Severity

Returns the default severity for this diagnostic code

pub fn ordering_priority(&self) -> u8

Returns the diagnostic ordering priority (lower = emitted first)

Ordering: Errors → Cost warnings → Assignment warnings → Hints → Info

Trait Implementations

impl Clone for DiagnosticCode

fn clone(&self) -> DiagnosticCode

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DiagnosticCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for DiagnosticCode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for DiagnosticCode

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for DiagnosticCode

fn eq(&self, other: &DiagnosticCode) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for DiagnosticCode

impl Eq for DiagnosticCode

impl StructuralPartialEq for DiagnosticCode