models

package
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 Go to latest Published: Dec 1, 2025 License: MIT Imports: 9 Imported by: 0

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Constants

View Source 
const (
	HotspotThreshold = 0.5
	StableThreshold  = 0.1
)

Thresholds for hotspot and stable file detection.

View Source 
const (
	// CriticalHotspotThreshold indicates a critical hotspot requiring immediate attention.
	// Files scoring >= 0.6 have both high churn AND high complexity.
	CriticalHotspotThreshold = 0.6

	// HighHotspotThreshold indicates a significant hotspot that should be reviewed.
	HighHotspotThreshold = 0.4

	// ModerateHotspotThreshold indicates a file worth monitoring.
	ModerateHotspotThreshold = 0.25

	// DefaultHotspotScoreThreshold is the default threshold for counting hotspots in summary.
	// Uses the "High" threshold as the default.
	DefaultHotspotScoreThreshold = HighHotspotThreshold
)

Hotspot severity thresholds based on geometric mean of CDF-normalized scores.

View Source 
const DefaultMinCochanges = 3

DefaultMinCochanges is the minimum co-change count to consider files coupled.

View Source 
const StrongCouplingThreshold = 0.5

StrongCouplingThreshold is the threshold for considering coupling "strong".

Variables

This section is empty.

Functions

func CalculateConcentration 

func CalculateConcentration(contributors []Contributor) float64

CalculateConcentration computes ownership concentration (0-1). Uses simplified Gini-like coefficient: top owner's percentage / 100.

func CalculateConfidence 

func CalculateConfidence(m FileMetrics) float32

CalculateConfidence computes confidence based on data availability.

func CalculateCouplingStrength 

func CalculateCouplingStrength(cochanges, commitsA, commitsB int) float64

CalculateCouplingStrength computes the coupling strength between two files. Strength = cochanges / max(commitsA, commitsB)

func CalculateEntropy 

func CalculateEntropy(linesPerFile map[string]int) float64

CalculateEntropy computes Shannon entropy of changes across files. Entropy = -sum(p_i * log2(p_i)) where p_i = lines_in_file_i / total_lines

func CalculateHotspotScore 

func CalculateHotspotScore(churnNorm, complexityNorm float64) float64

CalculateHotspotScore computes the hotspot score using geometric mean. This preserves the "intersection" semantics: both churn AND complexity must be elevated for a high score.

func CalculateJITRisk 

func CalculateJITRisk(features CommitFeatures, weights JITWeights, norm NormalizationStats) float64

CalculateJITRisk computes the risk score for a commit using JIT features.

func CalculateProbability 

func CalculateProbability(m FileMetrics, w DefectWeights) float32

CalculateProbability computes defect probability from metrics. PMAT-compatible: uses CDF normalization and sigmoid transformation.

func EscapeMermaidLabel 

func EscapeMermaidLabel(s string) string

EscapeMermaidLabel escapes special characters in labels for Mermaid.

func GenerateJITRecommendations 

func GenerateJITRecommendations(features CommitFeatures, score float64, factors map[string]float64) []string

GenerateJITRecommendations suggests actions based on risk factors.

func NormalizeChurnCDF 

func NormalizeChurnCDF(commits int) float64

NormalizeChurnCDF normalizes commit count using empirical CDF. Returns a value between 0 and 1 representing the percentile.

func NormalizeComplexityCDF 

func NormalizeComplexityCDF(avgCognitive float64) float64

NormalizeComplexityCDF normalizes average cognitive complexity using empirical CDF. Returns a value between 0 and 1 representing the percentile.

func SanitizeMermaidID 

func SanitizeMermaidID(id string) string

SanitizeMermaidID makes an ID safe for Mermaid diagrams.

func SetConfidenceThresholds 

func SetConfidenceThresholds(thresholds ConfidenceThresholds)

SetConfidenceThresholds allows customizing the confidence level thresholds. This function is thread-safe and typically called once at startup.

Types

type ArchitecturalSmell 

type ArchitecturalSmell struct {
	Type        SmellType     `json:"type"`
	Severity    SmellSeverity `json:"severity"`
	Components  []string      `json:"components"`
	Description string        `json:"description"`
	Suggestion  string        `json:"suggestion"`
	Metrics     SmellMetrics  `json:"metrics,omitempty"`
}

ArchitecturalSmell represents a detected architectural smell.

type CallGraph 

type CallGraph struct {
	Nodes       map[uint32]*ReferenceNode `json:"nodes" toon:"-"`
	Edges       []ReferenceEdge           `json:"edges" toon:"edges"`
	EntryPoints []uint32                  `json:"entry_points" toon:"entry_points"`
	EdgeIndex   map[uint32][]int          `json:"-" toon:"-"` // node -> edge indices (outgoing)
}

CallGraph represents the reference graph for reachability analysis.

func NewCallGraph 

func NewCallGraph() *CallGraph

NewCallGraph creates an initialized call graph.

func (*CallGraph) AddEdge 

func (g *CallGraph) AddEdge(edge ReferenceEdge)

AddEdge adds an edge to the call graph with indexing.

func (*CallGraph) AddNode 

func (g *CallGraph) AddNode(node *ReferenceNode)

AddNode adds a node to the call graph.

func (*CallGraph) GetOutgoingEdges 

func (g *CallGraph) GetOutgoingEdges(nodeID uint32) []ReferenceEdge

GetOutgoingEdges returns all edges originating from a node.

type ChurnAnalysis 

type ChurnAnalysis struct {
	GeneratedAt    time.Time          `json:"generated_at"`
	PeriodDays     int                `json:"period_days"`
	RepositoryRoot string             `json:"repository_root"`
	Files          []FileChurnMetrics `json:"files"`
	Summary        ChurnSummary       `json:"summary"`
}

ChurnAnalysis represents the full churn analysis result.

type ChurnSummary 

type ChurnSummary struct {
	// Required fields matching pmat
	TotalCommits        int            `json:"total_commits"`
	TotalFilesChanged   int            `json:"total_files_changed"`
	HotspotFiles        []string       `json:"hotspot_files"`
	StableFiles         []string       `json:"stable_files"`
	AuthorContributions map[string]int `json:"author_contributions"`
	MeanChurnScore      float64        `json:"mean_churn_score"`
	VarianceChurnScore  float64        `json:"variance_churn_score"`
	StdDevChurnScore    float64        `json:"stddev_churn_score"`
	// Additional metrics not in pmat
	TotalAdditions    int     `json:"total_additions,omitempty"`
	TotalDeletions    int     `json:"total_deletions,omitempty"`
	AvgCommitsPerFile float64 `json:"avg_commits_per_file,omitempty"`
	MaxChurnScore     float64 `json:"max_churn_score,omitempty"`
	P50ChurnScore     float64 `json:"p50_churn_score,omitempty"`
	P95ChurnScore     float64 `json:"p95_churn_score,omitempty"`
}

ChurnSummary provides aggregate statistics.

func NewChurnSummary 

func NewChurnSummary() ChurnSummary

NewChurnSummary creates an initialized summary.

func (*ChurnSummary) CalculateStatistics 

func (s *ChurnSummary) CalculateStatistics(files []FileChurnMetrics)

CalculateStatistics computes mean, variance, standard deviation, and percentiles.

func (*ChurnSummary) IdentifyHotspotAndStableFiles 

func (s *ChurnSummary) IdentifyHotspotAndStableFiles(files []FileChurnMetrics)

IdentifyHotspotAndStableFiles populates HotspotFiles and StableFiles. Files must be sorted by ChurnScore descending before calling. Hotspots: top 10 files filtered by churn_score > 0.5 Stable: bottom 10 files filtered by churn_score < 0.1 and commit_count > 0

type ClassMetrics 

type ClassMetrics struct {
	Path      string `json:"path"`
	ClassName string `json:"class_name"`
	Language  string `json:"language"`
	StartLine int    `json:"start_line"`
	EndLine   int    `json:"end_line"`

	// Weighted Methods per Class - sum of cyclomatic complexity of all methods
	WMC int `json:"wmc"`

	// Coupling Between Objects - number of other classes referenced
	CBO int `json:"cbo"`

	// Response For Class - number of methods that can be executed in response to a message
	RFC int `json:"rfc"`

	// Lack of Cohesion in Methods (LCOM4) - number of connected components in method-field graph
	// Lower is better; 1 = fully cohesive, >1 = could be split
	LCOM int `json:"lcom"`

	// Depth of Inheritance Tree
	DIT int `json:"dit"`

	// Number of Children (direct subclasses)
	NOC int `json:"noc"`

	// Number of methods
	NOM int `json:"nom"`

	// Number of fields/attributes
	NOF int `json:"nof"`

	// Lines of code in the class
	LOC int `json:"loc"`

	// Method names for reference
	Methods []string `json:"methods,omitempty"`

	// Field names for reference
	Fields []string `json:"fields,omitempty"`

	// Classes this class couples to
	CoupledClasses []string `json:"coupled_classes,omitempty"`
}

ClassMetrics represents CK metrics for a single class.

type CloneAnalysis 

type CloneAnalysis struct {
	Clones            []CodeClone  `json:"clones"`
	Groups            []CloneGroup `json:"groups,omitempty"`
	Summary           CloneSummary `json:"summary"`
	TotalFilesScanned int          `json:"total_files_scanned"`
	MinLines          int          `json:"min_lines"`
	Threshold         float64      `json:"threshold"`
}

CloneAnalysis represents the full duplicate detection result.

func (*CloneAnalysis) ToCloneReport 

func (a *CloneAnalysis) ToCloneReport() *CloneReport

ToCloneReport converts CloneAnalysis to pmat-compatible format.

type CloneGroup 

type CloneGroup struct {
	ID                uint64          `json:"id"`
	Type              CloneType       `json:"type"`
	Instances         []CloneInstance `json:"instances"`
	TotalLines        int             `json:"total_lines"`
	TotalTokens       int             `json:"total_tokens"`
	AverageSimilarity float64         `json:"average_similarity"`
}

CloneGroup represents a group of similar code fragments.

type CloneInstance 

type CloneInstance struct {
	File           string  `json:"file"`
	StartLine      uint32  `json:"start_line"`
	EndLine        uint32  `json:"end_line"`
	Lines          int     `json:"lines"`
	NormalizedHash uint64  `json:"normalized_hash"`
	Similarity     float64 `json:"similarity"`
}

CloneInstance represents a single occurrence within a clone group.

type CloneReport 

type CloneReport struct {
	Summary  CloneReportSummary   `json:"summary"`
	Groups   []CloneGroup         `json:"groups"`
	Hotspots []DuplicationHotspot `json:"hotspots"`
}

CloneReport is the pmat-compatible output format.

type CloneReportSummary 

type CloneReportSummary struct {
	TotalFiles       int     `json:"total_files"`
	TotalFragments   int     `json:"total_fragments"`
	DuplicateLines   int     `json:"duplicate_lines"`
	TotalLines       int     `json:"total_lines"`
	DuplicationRatio float64 `json:"duplication_ratio"`
	CloneGroups      int     `json:"clone_groups"`
	LargestGroupSize int     `json:"largest_group_size"`
}

CloneReportSummary is the pmat-compatible summary format.

type CloneSummary 

type CloneSummary struct {
	TotalClones      int                  `json:"total_clones"`
	TotalGroups      int                  `json:"total_groups"`
	Type1Count       int                  `json:"type1_count"`
	Type2Count       int                  `json:"type2_count"`
	Type3Count       int                  `json:"type3_count"`
	DuplicatedLines  int                  `json:"duplicated_lines"`
	TotalLines       int                  `json:"total_lines"`
	DuplicationRatio float64              `json:"duplication_ratio"`
	FileOccurrences  map[string]int       `json:"file_occurrences"`
	AvgSimilarity    float64              `json:"avg_similarity"`
	P50Similarity    float64              `json:"p50_similarity"`
	P95Similarity    float64              `json:"p95_similarity"`
	Hotspots         []DuplicationHotspot `json:"hotspots,omitempty"`
}

CloneSummary provides aggregate statistics.

func NewCloneSummary 

func NewCloneSummary() CloneSummary

NewCloneSummary creates an initialized summary.

func (*CloneSummary) AddClone 

func (s *CloneSummary) AddClone(c CodeClone)

AddClone updates the summary with a new clone.

type CloneType 

type CloneType string

CloneType represents the type of code clone detected. 

const (
	CloneType1 CloneType = "type1" // Exact (whitespace only differs)
	CloneType2 CloneType = "type2" // Parametric (identifiers/literals differ)
	CloneType3 CloneType = "type3" // Structural (statements added/removed)
)

func (CloneType) String 

func (c CloneType) String() string

CloneType

type CodeClone 

type CodeClone struct {
	Type       CloneType `json:"type"`
	Similarity float64   `json:"similarity"`
	FileA      string    `json:"file_a"`
	FileB      string    `json:"file_b"`
	StartLineA uint32    `json:"start_line_a"`
	EndLineA   uint32    `json:"end_line_a"`
	StartLineB uint32    `json:"start_line_b"`
	EndLineB   uint32    `json:"end_line_b"`
	LinesA     int       `json:"lines_a"`
	LinesB     int       `json:"lines_b"`
	TokenCount int       `json:"token_count,omitempty"`
	GroupID    uint64    `json:"group_id,omitempty"`
}

CodeClone represents a detected duplicate code fragment.

type CohesionAnalysis 

type CohesionAnalysis struct {
	GeneratedAt time.Time       `json:"generated_at"`
	Classes     []ClassMetrics  `json:"classes"`
	Summary     CohesionSummary `json:"summary"`
}

CohesionAnalysis represents the full CK metrics analysis result.

func (*CohesionAnalysis) CalculateSummary 

func (c *CohesionAnalysis) CalculateSummary()

CalculateSummary computes summary statistics.

func (*CohesionAnalysis) SortByCBO 

func (c *CohesionAnalysis) SortByCBO()

SortByCBO sorts classes by CBO in descending order (most coupled first).

func (*CohesionAnalysis) SortByDIT 

func (c *CohesionAnalysis) SortByDIT()

SortByDIT sorts classes by DIT in descending order (deepest inheritance first).

func (*CohesionAnalysis) SortByLCOM 

func (c *CohesionAnalysis) SortByLCOM()

SortByLCOM sorts classes by LCOM in descending order (least cohesive first).

func (*CohesionAnalysis) SortByWMC 

func (c *CohesionAnalysis) SortByWMC()

SortByWMC sorts classes by WMC in descending order (most complex first).

type CohesionSummary 

type CohesionSummary struct {
	TotalClasses int     `json:"total_classes"`
	TotalFiles   int     `json:"total_files"`
	AvgWMC       float64 `json:"avg_wmc"`
	AvgCBO       float64 `json:"avg_cbo"`
	AvgRFC       float64 `json:"avg_rfc"`
	AvgLCOM      float64 `json:"avg_lcom"`
	MaxWMC       int     `json:"max_wmc"`
	MaxCBO       int     `json:"max_cbo"`
	MaxRFC       int     `json:"max_rfc"`
	MaxLCOM      int     `json:"max_lcom"`
	MaxDIT       int     `json:"max_dit"`

	// Classes with high LCOM (>1) that may need refactoring
	LowCohesionCount int `json:"low_cohesion_count"`
}

CohesionSummary provides aggregate CK metrics.

type CommitFeatures 

type CommitFeatures struct {
	CommitHash       string    `json:"commit_hash"`
	Author           string    `json:"author"`
	Message          string    `json:"message"`
	Timestamp        time.Time `json:"timestamp"`
	IsFix            bool      `json:"is_fix"`            // FIX: Bug fix commit?
	IsAutomated      bool      `json:"is_automated"`      // Automated/trivial commit (CI, merge, etc.)
	Entropy          float64   `json:"entropy"`           // Entropy: Change distribution
	LinesAdded       int       `json:"lines_added"`       // LA
	LinesDeleted     int       `json:"lines_deleted"`     // LD
	NumFiles         int       `json:"num_files"`         // NF
	UniqueChanges    int       `json:"unique_changes"`    // NUC: Prior commits to these files
	NumDevelopers    int       `json:"num_developers"`    // NDEV: Unique devs on these files
	AuthorExperience int       `json:"author_experience"` // EXP: Author's prior commits
	FilesModified    []string  `json:"files_modified"`
}

CommitFeatures represents JIT features extracted from a commit.

type CommitRisk 

type CommitRisk struct {
	CommitHash          string             `json:"commit_hash"`
	Author              string             `json:"author"`
	Message             string             `json:"message"`
	Timestamp           time.Time          `json:"timestamp"`
	RiskScore           float64            `json:"risk_score"`
	RiskLevel           JITRiskLevel       `json:"risk_level"`
	ContributingFactors map[string]float64 `json:"contributing_factors"`
	Recommendations     []string           `json:"recommendations"`
	FilesModified       []string           `json:"files_modified"`
}

CommitRisk represents the JIT prediction result for a single commit.

type ComplexityAnalysis 

type ComplexityAnalysis struct {
	Files   []FileComplexity  `json:"files"`
	Summary ComplexitySummary `json:"summary"`
}

ComplexityAnalysis represents the full analysis result.

type ComplexityHotspot 

type ComplexityHotspot struct {
	File           string `json:"file"`
	Function       string `json:"function,omitempty"`
	Line           uint32 `json:"line"`
	Complexity     uint32 `json:"complexity"`
	ComplexityType string `json:"complexity_type"`
}

ComplexityHotspot identifies a high-complexity location in the codebase.

type ComplexityMetrics 

type ComplexityMetrics struct {
	Cyclomatic uint32 `json:"cyclomatic"`
	Cognitive  uint32 `json:"cognitive"`
	MaxNesting int    `json:"max_nesting"`
	Lines      int    `json:"lines"`
}

ComplexityMetrics represents code complexity measurements for a function or file.

func (*ComplexityMetrics) ComplexityScore 

func (m *ComplexityMetrics) ComplexityScore() float64

ComplexityScore calculates a composite complexity score for ranking. Combines cyclomatic, cognitive, nesting, and lines with weighted factors.

func (*ComplexityMetrics) IsSimple 

func (m *ComplexityMetrics) IsSimple(t ComplexityThresholds) bool

IsSimple returns true if complexity is within acceptable limits.

func (*ComplexityMetrics) IsSimpleDefault 

func (m *ComplexityMetrics) IsSimpleDefault() bool

IsSimpleDefault checks if complexity is low using fixed thresholds (pmat compatible). Returns true if cyclomatic <= 5 and cognitive <= 7.

func (*ComplexityMetrics) NeedsRefactoring 

func (m *ComplexityMetrics) NeedsRefactoring(t ComplexityThresholds) bool

NeedsRefactoring returns true if any metric significantly exceeds thresholds.

func (*ComplexityMetrics) NeedsRefactoringDefault 

func (m *ComplexityMetrics) NeedsRefactoringDefault() bool

NeedsRefactoringDefault checks if complexity exceeds fixed thresholds (pmat compatible). Returns true if cyclomatic > 10 or cognitive > 15.

type ComplexityReport 

type ComplexityReport struct {
	Summary            ExtendedComplexitySummary `json:"summary"`
	Violations         []Violation               `json:"violations"`
	Hotspots           []ComplexityHotspot       `json:"hotspots"`
	Files              []FileComplexity          `json:"files"`
	TechnicalDebtHours float32                   `json:"technical_debt_hours"`
}

ComplexityReport is the full analysis report with violations and hotspots.

func AggregateResults 

func AggregateResults(files []FileComplexity) *ComplexityReport

AggregateResults creates a ComplexityReport from file metrics using default thresholds.

func AggregateResultsWithThresholds 

func AggregateResultsWithThresholds(files []FileComplexity, maxCyclomatic, maxCognitive *uint32) *ComplexityReport

AggregateResultsWithThresholds creates a ComplexityReport with custom thresholds. If maxCyclomatic or maxCognitive is nil, defaults are used.

func (*ComplexityReport) ErrorCount 

func (r *ComplexityReport) ErrorCount() int

ErrorCount returns the number of error-severity violations.

func (*ComplexityReport) WarningCount 

func (r *ComplexityReport) WarningCount() int

WarningCount returns the number of warning-severity violations.

type ComplexitySummary 

type ComplexitySummary struct {
	TotalFiles     int     `json:"total_files"`
	TotalFunctions int     `json:"total_functions"`
	AvgCyclomatic  float64 `json:"avg_cyclomatic"`
	AvgCognitive   float64 `json:"avg_cognitive"`
	MaxCyclomatic  uint32  `json:"max_cyclomatic"`
	MaxCognitive   uint32  `json:"max_cognitive"`
	P50Cyclomatic  uint32  `json:"p50_cyclomatic"`
	P90Cyclomatic  uint32  `json:"p90_cyclomatic"`
	P95Cyclomatic  uint32  `json:"p95_cyclomatic"`
	P50Cognitive   uint32  `json:"p50_cognitive"`
	P90Cognitive   uint32  `json:"p90_cognitive"`
	P95Cognitive   uint32  `json:"p95_cognitive"`
	ViolationCount int     `json:"violation_count"`
}

ComplexitySummary provides aggregate statistics.

type ComplexityThresholds 

type ComplexityThresholds struct {
	MaxCyclomatic uint32 `json:"max_cyclomatic"`
	MaxCognitive  uint32 `json:"max_cognitive"`
	MaxNesting    int    `json:"max_nesting"`
}

ComplexityThresholds defines the limits for complexity violations.

func DefaultComplexityThresholds 

func DefaultComplexityThresholds() ComplexityThresholds

DefaultComplexityThresholds returns sensible defaults.

type ComponentMetrics 

type ComponentMetrics struct {
	ID          string  `json:"id"`
	Name        string  `json:"name"`
	FanIn       int     `json:"fan_in"`      // Afferent coupling (incoming dependencies)
	FanOut      int     `json:"fan_out"`     // Efferent coupling (outgoing dependencies)
	Instability float64 `json:"instability"` // Ce / (Ca + Ce), 0 = stable, 1 = unstable
	IsHub       bool    `json:"is_hub"`      // Fan-in + Fan-out > threshold
	IsGod       bool    `json:"is_god"`      // High fan-in AND high fan-out
}

ComponentMetrics provides instability metrics for a component.

func (*ComponentMetrics) CalculateInstability 

func (c *ComponentMetrics) CalculateInstability() float64

Instability calculates Martin's Instability metric. I = Ce / (Ca + Ce) Where Ce = efferent coupling (outgoing), Ca = afferent coupling (incoming) Returns 0 for stable packages (all incoming), 1 for unstable (all outgoing)

type ConfidenceLevel 

type ConfidenceLevel string

ConfidenceLevel indicates how certain we are about dead code detection. 

const (
	ConfidenceHigh   ConfidenceLevel = "High"
	ConfidenceMedium ConfidenceLevel = "Medium"
	ConfidenceLow    ConfidenceLevel = "Low"
)

func (ConfidenceLevel) String 

func (c ConfidenceLevel) String() string

ConfidenceLevel

type ConfidenceThresholds 

type ConfidenceThresholds struct {
	HighThreshold   float64 // Confidence >= this is "High" (default: 0.8)
	MediumThreshold float64 // Confidence >= this (and < High) is "Medium" (default: 0.5)
}

ConfidenceThresholds defines the thresholds for confidence level classification. These thresholds are based on empirical analysis of dead code detection accuracy: - High (>=0.8): Private/unexported symbols with no references have very low false positive rates - Medium (>=0.5): Exported symbols without internal usage may still be part of public API - Low (<0.5): Symbols matching dynamic usage patterns (reflection, callbacks) need manual review

func DefaultConfidenceThresholds 

func DefaultConfidenceThresholds() ConfidenceThresholds

DefaultConfidenceThresholds returns the default confidence thresholds.

func GetConfidenceThresholds 

func GetConfidenceThresholds() ConfidenceThresholds

GetConfidenceThresholds returns the current confidence thresholds. This function is thread-safe.

type Contributor 

type Contributor struct {
	Name       string  `json:"name"`
	Email      string  `json:"email"`
	LinesOwned int     `json:"lines_owned"`
	Percentage float64 `json:"percentage"` // 0-100
}

Contributor represents a contributor to a file.

type DeadClass 

type DeadClass struct {
	Name             string          `json:"name"`
	File             string          `json:"file"`
	Line             uint32          `json:"line"`
	EndLine          uint32          `json:"end_line"`
	Visibility       string          `json:"visibility"`
	Confidence       float64         `json:"confidence"`
	ConfidenceLevel  ConfidenceLevel `json:"confidence_level"`
	ConfidenceReason string          `json:"confidence_reason"`
	Reason           string          `json:"reason"`
	Kind             DeadCodeKind    `json:"kind,omitempty"`
	NodeID           uint32          `json:"node_id,omitempty"`
}

DeadClass represents an unused class/struct/type.

func (*DeadClass) SetConfidenceLevel 

func (c *DeadClass) SetConfidenceLevel()

SetConfidenceLevel sets the confidence level and reason based on the numeric confidence. Uses configurable thresholds from GetConfidenceThresholds().

type DeadCodeAnalysis 

type DeadCodeAnalysis struct {
	DeadFunctions   []DeadFunction     `json:"dead_functions"`
	DeadVariables   []DeadVariable     `json:"dead_variables"`
	DeadClasses     []DeadClass        `json:"dead_classes,omitempty"`
	UnreachableCode []UnreachableBlock `json:"unreachable_code"`
	Summary         DeadCodeSummary    `json:"summary"`
	CallGraph       *CallGraph         `json:"call_graph,omitempty"`
}

DeadCodeAnalysis represents the full dead code detection result.

type DeadCodeAnalysisConfig 

type DeadCodeAnalysisConfig struct {
	IncludeUnreachable bool `json:"include_unreachable"`
	IncludeTests       bool `json:"include_tests"`
	MinDeadLines       int  `json:"min_dead_lines"`
}

DeadCodeAnalysisConfig holds configuration for dead code analysis (pmat compatible).

type DeadCodeItem 

type DeadCodeItem struct {
	ItemType DeadCodeType `json:"item_type"`
	Name     string       `json:"name"`
	Line     uint32       `json:"line"`
	Reason   string       `json:"reason"`
}

DeadCodeItem represents an individual dead code item within a file (pmat compatible).

type DeadCodeKind 

type DeadCodeKind string

DeadCodeKind classifies the type of dead code detected. 

const (
	DeadKindFunction    DeadCodeKind = "unused_function"
	DeadKindClass       DeadCodeKind = "unused_class"
	DeadKindVariable    DeadCodeKind = "unused_variable"
	DeadKindUnreachable DeadCodeKind = "unreachable_code"
	DeadKindDeadBranch  DeadCodeKind = "dead_branch"
)

func (DeadCodeKind) String 

func (d DeadCodeKind) String() string

DeadCodeKind

type DeadCodeRankingSummary 

type DeadCodeRankingSummary struct {
	TotalFilesAnalyzed int     `json:"total_files_analyzed"`
	FilesWithDeadCode  int     `json:"files_with_dead_code"`
	TotalDeadLines     int     `json:"total_dead_lines"`
	DeadPercentage     float32 `json:"dead_percentage"`
	DeadFunctions      int     `json:"dead_functions"`
	DeadClasses        int     `json:"dead_classes"`
	DeadModules        int     `json:"dead_modules"`
	UnreachableBlocks  int     `json:"unreachable_blocks"`
}

DeadCodeRankingSummary provides aggregate statistics (pmat compatible).

type DeadCodeResult 

type DeadCodeResult struct {
	Summary           DeadCodeRankingSummary `json:"summary"`
	Files             []FileDeadCodeMetrics  `json:"files"`
	TotalFiles        int                    `json:"total_files"`
	AnalyzedFiles     int                    `json:"analyzed_files"`
	AnalysisTimestamp time.Time              `json:"analysis_timestamp,omitempty"`
	Config            DeadCodeAnalysisConfig `json:"config,omitempty"`
}

DeadCodeResult is the pmat-compatible output format for dead code analysis.

func NewDeadCodeResult 

func NewDeadCodeResult() *DeadCodeResult

NewDeadCodeResult creates a new pmat-compatible dead code result.

func (*DeadCodeResult) FromDeadCodeAnalysis 

func (r *DeadCodeResult) FromDeadCodeAnalysis(analysis *DeadCodeAnalysis)

FromDeadCodeAnalysis converts the internal DeadCodeAnalysis to pmat-compatible format.

type DeadCodeSummary 

type DeadCodeSummary struct {
	TotalDeadFunctions     int                  `json:"total_dead_functions" toon:"total_dead_functions"`
	TotalDeadVariables     int                  `json:"total_dead_variables" toon:"total_dead_variables"`
	TotalDeadClasses       int                  `json:"total_dead_classes" toon:"total_dead_classes"`
	TotalUnreachableBlocks int                  `json:"total_unreachable_blocks" toon:"total_unreachable_blocks"`
	TotalUnreachableLines  int                  `json:"total_unreachable_lines" toon:"total_unreachable_lines"`
	DeadCodePercentage     float64              `json:"dead_code_percentage" toon:"dead_code_percentage"`
	ByFile                 map[string]int       `json:"by_file" toon:"by_file"`
	ByKind                 map[DeadCodeKind]int `json:"by_kind,omitempty" toon:"-"`
	TotalFilesAnalyzed     int                  `json:"total_files_analyzed" toon:"total_files_analyzed"`
	TotalLinesAnalyzed     int                  `json:"total_lines_analyzed" toon:"total_lines_analyzed"`
	TotalNodesInGraph      int                  `json:"total_nodes_in_graph,omitempty" toon:"total_nodes_in_graph,omitempty"`
	ReachableNodes         int                  `json:"reachable_nodes,omitempty" toon:"reachable_nodes,omitempty"`
	UnreachableNodes       int                  `json:"unreachable_nodes,omitempty" toon:"unreachable_nodes,omitempty"`
	ConfidenceLevel        float64              `json:"confidence_level,omitempty" toon:"confidence_level,omitempty"`
}

DeadCodeSummary provides aggregate statistics.

func NewDeadCodeSummary 

func NewDeadCodeSummary() DeadCodeSummary

NewDeadCodeSummary creates an initialized summary.

func (*DeadCodeSummary) AddDeadClass 

func (s *DeadCodeSummary) AddDeadClass(c DeadClass)

AddDeadClass updates the summary with a dead class.

func (*DeadCodeSummary) AddDeadFunction 

func (s *DeadCodeSummary) AddDeadFunction(f DeadFunction)

AddDeadFunction updates the summary with a dead function.

func (*DeadCodeSummary) AddDeadVariable 

func (s *DeadCodeSummary) AddDeadVariable(v DeadVariable)

AddDeadVariable updates the summary with a dead variable.

func (*DeadCodeSummary) AddUnreachableBlock 

func (s *DeadCodeSummary) AddUnreachableBlock(b UnreachableBlock)

AddUnreachableBlock updates the summary with unreachable code.

func (*DeadCodeSummary) CalculatePercentage 

func (s *DeadCodeSummary) CalculatePercentage()

CalculatePercentage computes dead code percentage.

type DeadCodeType 

type DeadCodeType string

DeadCodeType classifies the type of dead code item (pmat compatible). 

const (
	DeadCodeTypeFunction    DeadCodeType = "function"
	DeadCodeTypeClass       DeadCodeType = "class"
	DeadCodeTypeVariable    DeadCodeType = "variable"
	DeadCodeTypeUnreachable DeadCodeType = "unreachable"
)

func (DeadCodeType) String 

func (d DeadCodeType) String() string

DeadCodeType

type DeadFunction 

type DeadFunction struct {
	Name             string          `json:"name"`
	File             string          `json:"file"`
	Line             uint32          `json:"line"`
	EndLine          uint32          `json:"end_line"`
	Visibility       string          `json:"visibility"` // public, private, internal
	Confidence       float64         `json:"confidence"` // 0.0-1.0, how certain we are it's dead
	ConfidenceLevel  ConfidenceLevel `json:"confidence_level"`
	ConfidenceReason string          `json:"confidence_reason"` // Why we have this confidence level
	Reason           string          `json:"reason"`            // Why it's considered dead
	Kind             DeadCodeKind    `json:"kind,omitempty"`
	NodeID           uint32          `json:"node_id,omitempty"`
}

DeadFunction represents an unused function detected in the codebase.

func (*DeadFunction) SetConfidenceLevel 

func (f *DeadFunction) SetConfidenceLevel()

SetConfidenceLevel sets the confidence level and reason based on the numeric confidence. Uses configurable thresholds from GetConfidenceThresholds().

type DeadVariable 

type DeadVariable struct {
	Name             string          `json:"name"`
	File             string          `json:"file"`
	Line             uint32          `json:"line"`
	Visibility       string          `json:"visibility"`
	Confidence       float64         `json:"confidence"`
	ConfidenceLevel  ConfidenceLevel `json:"confidence_level"`
	ConfidenceReason string          `json:"confidence_reason"`
	Reason           string          `json:"reason,omitempty"`
	Kind             DeadCodeKind    `json:"kind,omitempty"`
	NodeID           uint32          `json:"node_id,omitempty"`
}

DeadVariable represents an unused variable.

func (*DeadVariable) SetConfidenceLevel 

func (v *DeadVariable) SetConfidenceLevel()

SetConfidenceLevel sets the confidence level and reason based on the numeric confidence. Uses configurable thresholds from GetConfidenceThresholds().

type DebtCategory 

type DebtCategory string

DebtCategory represents the type of technical debt. 

const (
	DebtDesign      DebtCategory = "design"      // HACK, KLUDGE, SMELL
	DebtDefect      DebtCategory = "defect"      // BUG, FIXME, BROKEN
	DebtRequirement DebtCategory = "requirement" // TODO, FEAT, ENHANCEMENT
	DebtTest        DebtCategory = "test"        // FAILING, SKIP, DISABLED
	DebtPerformance DebtCategory = "performance" // SLOW, OPTIMIZE, PERF
	DebtSecurity    DebtCategory = "security"    // SECURITY, VULN, UNSAFE
)

func (DebtCategory) String 

func (d DebtCategory) String() string

String implements fmt.Stringer for toon serialization.

type DefectAnalysis 

type DefectAnalysis struct {
	Files   []DefectScore `json:"files"`
	Summary DefectSummary `json:"summary"`
	Weights DefectWeights `json:"weights"`
}

DefectAnalysis represents the full defect prediction result (internal format).

func (*DefectAnalysis) ToDefectPredictionReport 

func (a *DefectAnalysis) ToDefectPredictionReport() *DefectPredictionReport

ToDefectPredictionReport converts DefectAnalysis to pmat-compatible format.

type DefectPredictionReport 

type DefectPredictionReport struct {
	TotalFiles      int              `json:"total_files"`
	HighRiskFiles   int              `json:"high_risk_files"`
	MediumRiskFiles int              `json:"medium_risk_files"`
	LowRiskFiles    int              `json:"low_risk_files"`
	FilePredictions []FilePrediction `json:"file_predictions"`
}

DefectPredictionReport is the pmat-compatible output format.

type DefectScore 

type DefectScore struct {
	FilePath            string             `json:"file_path"`
	Probability         float32            `json:"probability"` // 0.0 to 1.0
	Confidence          float32            `json:"confidence"`  // 0.0 to 1.0
	RiskLevel           RiskLevel          `json:"risk_level"`
	ContributingFactors map[string]float32 `json:"contributing_factors"`
	Recommendations     []string           `json:"recommendations"`
}

DefectScore represents the prediction result for a file (internal format).

type DefectSummary 

type DefectSummary struct {
	TotalFiles      int     `json:"total_files"`
	HighRiskCount   int     `json:"high_risk_count"`
	MediumRiskCount int     `json:"medium_risk_count"`
	LowRiskCount    int     `json:"low_risk_count"`
	AvgProbability  float32 `json:"avg_probability"`
	P50Probability  float32 `json:"p50_probability"`
	P95Probability  float32 `json:"p95_probability"`
}

DefectSummary provides aggregate statistics (internal format).

type DefectWeights 

type DefectWeights struct {
	Churn       float32 `json:"churn"`       // 0.35
	Complexity  float32 `json:"complexity"`  // 0.30
	Duplication float32 `json:"duplication"` // 0.25
	Coupling    float32 `json:"coupling"`    // 0.10
}

DefectWeights defines the weights for defect prediction factors. Based on empirical research (PMAT approach).

func DefaultDefectWeights 

func DefaultDefectWeights() DefectWeights

DefaultDefectWeights returns the standard weights.

type DependencyGraph 

type DependencyGraph struct {
	Nodes []GraphNode `json:"nodes"`
	Edges []GraphEdge `json:"edges"`
}

DependencyGraph represents the full graph structure.

func NewDependencyGraph 

func NewDependencyGraph() *DependencyGraph

NewDependencyGraph creates an empty graph.

func (*DependencyGraph) AddEdge 

func (g *DependencyGraph) AddEdge(edge GraphEdge)

AddEdge adds an edge to the graph.

func (*DependencyGraph) AddNode 

func (g *DependencyGraph) AddNode(node GraphNode)

AddNode adds a node to the graph.

func (*DependencyGraph) ToMermaid 

func (g *DependencyGraph) ToMermaid() string

ToMermaid generates Mermaid diagram syntax from the graph using default options.

func (*DependencyGraph) ToMermaidWithOptions 

func (g *DependencyGraph) ToMermaidWithOptions(opts MermaidOptions) string

ToMermaidWithOptions generates Mermaid diagram syntax with custom options.

type DuplicationHotspot 

type DuplicationHotspot struct {
	File            string  `json:"file"`
	DuplicateLines  int     `json:"duplicate_lines"`
	CloneGroupCount int     `json:"clone_group_count"`
	Severity        float64 `json:"severity"`
}

DuplicationHotspot represents a file with high duplication.

type EdgeType 

type EdgeType string

EdgeType represents the type of dependency. 

const (
	EdgeImport    EdgeType = "import"
	EdgeCall      EdgeType = "call"
	EdgeInherit   EdgeType = "inherit"
	EdgeImplement EdgeType = "implement"
	EdgeReference EdgeType = "reference"
	EdgeUses      EdgeType = "uses"
)

func (EdgeType) String 

func (e EdgeType) String() string

EdgeType

type ExtendedComplexitySummary 

type ExtendedComplexitySummary struct {
	TotalFiles         int     `json:"total_files"`
	TotalFunctions     int     `json:"total_functions"`
	MedianCyclomatic   float32 `json:"median_cyclomatic"`
	MedianCognitive    float32 `json:"median_cognitive"`
	MaxCyclomatic      uint32  `json:"max_cyclomatic"`
	MaxCognitive       uint32  `json:"max_cognitive"`
	P90Cyclomatic      uint32  `json:"p90_cyclomatic"`
	P90Cognitive       uint32  `json:"p90_cognitive"`
	TechnicalDebtHours float32 `json:"technical_debt_hours"`
}

ExtendedComplexitySummary provides enhanced statistics (pmat compatible).

type ExtendedComplexityThresholds 

type ExtendedComplexityThresholds struct {
	CyclomaticWarn  uint32 `json:"cyclomatic_warn"`
	CyclomaticError uint32 `json:"cyclomatic_error"`
	CognitiveWarn   uint32 `json:"cognitive_warn"`
	CognitiveError  uint32 `json:"cognitive_error"`
	NestingMax      uint8  `json:"nesting_max"`
	MethodLength    uint16 `json:"method_length"`
}

ExtendedComplexityThresholds provides warn and error levels (pmat compatible).

func DefaultExtendedThresholds 

func DefaultExtendedThresholds() ExtendedComplexityThresholds

DefaultExtendedThresholds returns pmat-compatible default thresholds.

type FileChurnMetrics 

type FileChurnMetrics struct {
	Path          string         `json:"path"`
	RelativePath  string         `json:"relative_path"`
	Commits       int            `json:"commit_count"`
	UniqueAuthors []string       `json:"unique_authors"`
	AuthorCounts  map[string]int `json:"-"` // internal: author name -> commit count
	LinesAdded    int            `json:"additions"`
	LinesDeleted  int            `json:"deletions"`
	ChurnScore    float64        `json:"churn_score"` // 0.0-1.0 normalized
	FirstCommit   time.Time      `json:"first_seen"`
	LastCommit    time.Time      `json:"last_modified"`

	// Relative churn metrics (research-backed - Nagappan & Ball 2005)
	TotalLOC        int     `json:"total_loc,omitempty"`        // Current lines of code in file
	LOCReadError    bool    `json:"loc_read_error,omitempty"`   // True if file could not be read for LOC count
	RelativeChurn   float64 `json:"relative_churn,omitempty"`   // (LinesAdded + LinesDeleted) / TotalLOC
	ChurnRate       float64 `json:"churn_rate,omitempty"`       // RelativeChurn / DaysSinceFirstCommit
	ChangeFrequency float64 `json:"change_frequency,omitempty"` // Commits / DaysSinceFirstCommit
	DaysActive      int     `json:"days_active,omitempty"`      // Days between first and last commit
}

FileChurnMetrics represents git churn data for a single file.

func (*FileChurnMetrics) CalculateChurnScore 

func (f *FileChurnMetrics) CalculateChurnScore() float64

CalculateChurnScore computes a normalized churn score. Uses the same formula as the reference implementation: churn_score = (commit_factor * 0.6 + change_factor * 0.4)

func (*FileChurnMetrics) CalculateChurnScoreWithMax 

func (f *FileChurnMetrics) CalculateChurnScoreWithMax(maxCommits, maxChanges int) float64

CalculateChurnScoreWithMax computes churn score with explicit max values.

func (*FileChurnMetrics) CalculateRelativeChurn 

func (f *FileChurnMetrics) CalculateRelativeChurn(now time.Time)

CalculateRelativeChurn computes relative churn metrics. These metrics are research-backed per Nagappan & Ball (2005): "Use of relative code churn measures to predict system defect density" Relative churn discriminates fault-prone files with 89% accuracy.

func (*FileChurnMetrics) IsHotspot 

func (f *FileChurnMetrics) IsHotspot(threshold float64) bool

IsHotspot returns true if the file has high churn.

type FileComplexity 

type FileComplexity struct {
	Path            string               `json:"path"`
	Language        string               `json:"language"`
	Functions       []FunctionComplexity `json:"functions"`
	TotalCyclomatic uint32               `json:"total_cyclomatic"`
	TotalCognitive  uint32               `json:"total_cognitive"`
	AvgCyclomatic   float64              `json:"avg_cyclomatic"`
	AvgCognitive    float64              `json:"avg_cognitive"`
	MaxCyclomatic   uint32               `json:"max_cyclomatic"`
	MaxCognitive    uint32               `json:"max_cognitive"`
	ViolationCount  int                  `json:"violation_count"`
}

FileComplexity represents aggregated complexity for a file.

type FileCoupling 

type FileCoupling struct {
	FileA            string  `json:"file_a"`
	FileB            string  `json:"file_b"`
	CochangeCount    int     `json:"cochange_count"`
	CouplingStrength float64 `json:"coupling_strength"` // 0-1
	CommitsA         int     `json:"commits_a"`
	CommitsB         int     `json:"commits_b"`
}

FileCoupling represents the temporal coupling between two files.

type FileDeadCodeMetrics 

type FileDeadCodeMetrics struct {
	Path              string          `json:"path"`
	DeadLines         int             `json:"dead_lines"`
	TotalLines        int             `json:"total_lines"`
	DeadPercentage    float32         `json:"dead_percentage"`
	DeadFunctions     int             `json:"dead_functions"`
	DeadClasses       int             `json:"dead_classes"`
	DeadModules       int             `json:"dead_modules"`
	UnreachableBlocks int             `json:"unreachable_blocks"`
	DeadScore         float32         `json:"dead_score"`
	Confidence        ConfidenceLevel `json:"confidence"`
	Items             []DeadCodeItem  `json:"items"`
}

FileDeadCodeMetrics contains file-level dead code metrics with items (pmat compatible).

func (*FileDeadCodeMetrics) AddItem 

func (f *FileDeadCodeMetrics) AddItem(item DeadCodeItem)

AddItem adds a dead code item and updates counts.

func (*FileDeadCodeMetrics) CalculateScore 

func (f *FileDeadCodeMetrics) CalculateScore()

CalculateScore calculates the dead code score using weighted algorithm (pmat compatible).

func (*FileDeadCodeMetrics) UpdatePercentage 

func (f *FileDeadCodeMetrics) UpdatePercentage()

UpdatePercentage updates the dead percentage based on current counts.

type FileHotspot 

type FileHotspot struct {
	Path            string  `json:"path"`
	HotspotScore    float64 `json:"hotspot_score"`    // 0-1, geometric mean of normalized churn and complexity
	ChurnScore      float64 `json:"churn_score"`      // 0-1, CDF-normalized
	ComplexityScore float64 `json:"complexity_score"` // 0-1, CDF-normalized
	Commits         int     `json:"commits"`
	AvgCognitive    float64 `json:"avg_cognitive"`
	AvgCyclomatic   float64 `json:"avg_cyclomatic"`
	TotalFunctions  int     `json:"total_functions"`
}

FileHotspot represents hotspot metrics for a single file.

func (*FileHotspot) Severity 

func (f *FileHotspot) Severity() HotspotSeverity

Severity returns the severity level based on the hotspot score.

type FileMetrics 

type FileMetrics struct {
	FilePath             string  `json:"file_path"`
	ChurnScore           float32 `json:"churn_score"`       // 0.0 to 1.0
	Complexity           float32 `json:"complexity"`        // Raw complexity
	DuplicateRatio       float32 `json:"duplicate_ratio"`   // 0.0 to 1.0
	AfferentCoupling     float32 `json:"afferent_coupling"` // Incoming deps
	EfferentCoupling     float32 `json:"efferent_coupling"` // Outgoing deps
	LinesOfCode          int     `json:"lines_of_code"`
	CyclomaticComplexity uint32  `json:"cyclomatic_complexity"`
	CognitiveComplexity  uint32  `json:"cognitive_complexity"`
}

FileMetrics contains input metrics for defect prediction.

type FileOwnership 

type FileOwnership struct {
	Path             string        `json:"path"`
	PrimaryOwner     string        `json:"primary_owner"`
	OwnershipPercent float64       `json:"ownership_percent"` // 0-100
	Concentration    float64       `json:"concentration"`     // 0-1, higher = more concentrated
	TotalLines       int           `json:"total_lines"`
	Contributors     []Contributor `json:"contributors,omitempty"`
	IsSilo           bool          `json:"is_silo"` // Single contributor
}

FileOwnership represents ownership metrics for a single file.

type FilePrediction 

type FilePrediction struct {
	FilePath  string   `json:"file_path"`
	RiskScore float32  `json:"risk_score"`
	RiskLevel string   `json:"risk_level"`
	Factors   []string `json:"factors"`
}

FilePrediction represents a file's defect prediction (pmat-compatible).

type FunctionComplexity 

type FunctionComplexity struct {
	Name       string            `json:"name"`
	File       string            `json:"file"`
	StartLine  uint32            `json:"start_line"`
	EndLine    uint32            `json:"end_line"`
	Metrics    ComplexityMetrics `json:"metrics"`
	Violations []string          `json:"violations,omitempty"`
}

FunctionComplexity represents complexity metrics for a single function.

type Grade 

type Grade string

Grade represents a letter grade from A+ to F (PMAT-compatible). Higher grades indicate better code quality. 

const (
	GradeAPlus  Grade = "A+"
	GradeA      Grade = "A"
	GradeAMinus Grade = "A-"
	GradeBPlus  Grade = "B+"
	GradeB      Grade = "B"
	GradeBMinus Grade = "B-"
	GradeCPlus  Grade = "C+"
	GradeC      Grade = "C"
	GradeCMinus Grade = "C-"
	GradeD      Grade = "D"
	GradeF      Grade = "F"
)

func GradeFromScore 

func GradeFromScore(score float32) Grade

GradeFromScore converts a 0-100 score to a letter grade.

func (Grade) String 

func (g Grade) String() string

Grade

type GraphEdge 

type GraphEdge struct {
	From   string   `json:"from"`
	To     string   `json:"to"`
	Type   EdgeType `json:"type"`
	Weight float64  `json:"weight,omitempty"`
}

GraphEdge represents a dependency between nodes.

type GraphMetrics 

type GraphMetrics struct {
	NodeMetrics []NodeMetric `json:"node_metrics"`
	Summary     GraphSummary `json:"summary"`
}

GraphMetrics represents centrality and other graph metrics.

type GraphNode 

type GraphNode struct {
	ID         string            `json:"id"`
	Name       string            `json:"name"`
	Type       NodeType          `json:"type"` // file, function, class, module
	File       string            `json:"file"`
	Line       uint32            `json:"line,omitempty"`
	Attributes map[string]string `json:"attributes,omitempty"`
}

GraphNode represents a node in the dependency graph.

type GraphSummary 

type GraphSummary struct {
	TotalNodes                  int      `json:"total_nodes"`
	TotalEdges                  int      `json:"total_edges"`
	AvgDegree                   float64  `json:"avg_degree"`
	Density                     float64  `json:"density"`
	Components                  int      `json:"components"`
	LargestComponent            int      `json:"largest_component"`
	StronglyConnectedComponents int      `json:"strongly_connected_components"`
	CycleCount                  int      `json:"cycle_count"`
	CycleNodes                  []string `json:"cycle_nodes,omitempty"`
	IsCyclic                    bool     `json:"is_cyclic"`
	Diameter                    int      `json:"diameter,omitempty"`
	Radius                      int      `json:"radius,omitempty"`
	ClusteringCoefficient       float64  `json:"clustering_coefficient"`
	Assortativity               float64  `json:"assortativity"`
	Transitivity                float64  `json:"transitivity"`
	Reciprocity                 float64  `json:"reciprocity,omitempty"`
	Modularity                  float64  `json:"modularity,omitempty"`
	CommunityCount              int      `json:"community_count,omitempty"`
}

GraphSummary provides aggregate graph statistics.

type HotspotAnalysis 

type HotspotAnalysis struct {
	GeneratedAt time.Time      `json:"generated_at"`
	PeriodDays  int            `json:"period_days"`
	Files       []FileHotspot  `json:"files"`
	Summary     HotspotSummary `json:"summary"`
}

HotspotAnalysis represents the full hotspot analysis result.

func (*HotspotAnalysis) CalculateSummary 

func (h *HotspotAnalysis) CalculateSummary()

CalculateSummary computes summary statistics from file hotspots. Files must be sorted by HotspotScore descending before calling.

type HotspotSeverity 

type HotspotSeverity string

HotspotSeverity represents the severity level of a hotspot. 

const (
	HotspotSeverityCritical HotspotSeverity = "critical"
	HotspotSeverityHigh     HotspotSeverity = "high"
	HotspotSeverityModerate HotspotSeverity = "moderate"
	HotspotSeverityLow      HotspotSeverity = "low"
)

type HotspotSummary 

type HotspotSummary struct {
	TotalFiles      int     `json:"total_files"`
	HotspotCount    int     `json:"hotspot_count"` // Files above threshold
	MaxHotspotScore float64 `json:"max_hotspot_score"`
	AvgHotspotScore float64 `json:"avg_hotspot_score"`
	P50HotspotScore float64 `json:"p50_hotspot_score"`
	P90HotspotScore float64 `json:"p90_hotspot_score"`
}

HotspotSummary provides aggregate statistics for hotspot analysis.

type JITAnalysis 

type JITAnalysis struct {
	GeneratedAt   time.Time          `json:"generated_at"`
	PeriodDays    int                `json:"period_days"`
	Commits       []CommitRisk       `json:"commits"`
	Summary       JITSummary         `json:"summary"`
	Weights       JITWeights         `json:"weights"`
	Normalization NormalizationStats `json:"normalization"`
}

JITAnalysis represents the full JIT defect prediction result.

func NewJITAnalysis 

func NewJITAnalysis() *JITAnalysis

NewJITAnalysis creates an initialized JIT analysis.

type JITRiskLevel 

type JITRiskLevel string

JITRiskLevel represents the risk level for a commit. 

const (
	JITRiskLow    JITRiskLevel = "low"    // < 0.4
	JITRiskMedium JITRiskLevel = "medium" // 0.4 - 0.7
	JITRiskHigh   JITRiskLevel = "high"   // >= 0.7
)

func GetJITRiskLevel 

func GetJITRiskLevel(score float64) JITRiskLevel

GetJITRiskLevel determines risk level from score.

type JITSummary 

type JITSummary struct {
	TotalCommits    int     `json:"total_commits"`
	HighRiskCount   int     `json:"high_risk_count"`
	MediumRiskCount int     `json:"medium_risk_count"`
	LowRiskCount    int     `json:"low_risk_count"`
	BugFixCount     int     `json:"bug_fix_count"`
	AvgRiskScore    float64 `json:"avg_risk_score"`
	P50RiskScore    float64 `json:"p50_risk_score"`
	P95RiskScore    float64 `json:"p95_risk_score"`
}

JITSummary provides aggregate statistics.

type JITWeights 

type JITWeights struct {
	FIX     float64 `json:"fix"`     // Is bug fix commit?
	Entropy float64 `json:"entropy"` // Change entropy across files
	LA      float64 `json:"la"`      // Lines added
	NUC     float64 `json:"nuc"`     // Number of unique prior commits
	NF      float64 `json:"nf"`      // Number of files modified
	LD      float64 `json:"ld"`      // Lines deleted
	NDEV    float64 `json:"ndev"`    // Number of developers
	EXP     float64 `json:"exp"`     // Author experience (inverted)
}

JITWeights defines the weights for JIT defect prediction features. Based on Kamei et al. (2013) "A Large-Scale Empirical Study of Just-in-Time Quality Assurance" and Zeng et al. (2021) showing simple models match deep learning accuracy (~65%).

func DefaultJITWeights 

func DefaultJITWeights() JITWeights

DefaultJITWeights returns research-backed weights from the requirements spec.

type Language 

type Language string

Language represents the detected programming language. 

const (
	LanguageUnknown    Language = "unknown"
	LanguageRust       Language = "rust"
	LanguageGo         Language = "go"
	LanguagePython     Language = "python"
	LanguageJavaScript Language = "javascript"
	LanguageTypeScript Language = "typescript"
	LanguageJava       Language = "java"
	LanguageC          Language = "c"
	LanguageCpp        Language = "cpp"
	LanguageCSharp     Language = "csharp"
	LanguageRuby       Language = "ruby"
	LanguagePHP        Language = "php"
	LanguageSwift      Language = "swift"
	LanguageKotlin     Language = "kotlin"
)

func LanguageFromExtension 

func LanguageFromExtension(path string) Language

LanguageFromExtension detects the language from a file extension.

func (Language) Confidence 

func (l Language) Confidence() float32

Confidence returns the detection confidence for the language.

func (Language) String 

func (l Language) String() string

Language

type LanguageOverride 

type LanguageOverride struct {
	MaxCognitiveComplexity *uint32  `json:"max_cognitive_complexity,omitempty" toml:"max_cognitive_complexity,omitempty"`
	MinDocCoverage         *float32 `json:"min_doc_coverage,omitempty" toml:"min_doc_coverage,omitempty"`
	EnforceErrorCheck      *bool    `json:"enforce_error_check,omitempty" toml:"enforce_error_check,omitempty"`
	MaxFunctionLength      *uint32  `json:"max_function_length,omitempty" toml:"max_function_length,omitempty"`
}

LanguageOverride defines language-specific overrides.

type MermaidDirection 

type MermaidDirection string

MermaidDirection specifies the graph direction. 

const (
	DirectionTD MermaidDirection = "TD" // Top-down
	DirectionLR MermaidDirection = "LR" // Left-right
	DirectionBT MermaidDirection = "BT" // Bottom-top
	DirectionRL MermaidDirection = "RL" // Right-left
)

type MermaidOptions 

type MermaidOptions struct {
	MaxNodes       int              `json:"max_nodes"`
	MaxEdges       int              `json:"max_edges"`
	ShowComplexity bool             `json:"show_complexity"`
	GroupByModule  bool             `json:"group_by_module"`
	NodeComplexity map[string]int   `json:"node_complexity,omitempty"`
	Direction      MermaidDirection `json:"direction"`
}

MermaidOptions configures Mermaid diagram generation.

func DefaultMermaidOptions 

func DefaultMermaidOptions() MermaidOptions

DefaultMermaidOptions returns sensible defaults.

type MetricCategory 

type MetricCategory string

MetricCategory represents a category of TDG metrics. 

const (
	MetricStructuralComplexity MetricCategory = "structural_complexity"
	MetricSemanticComplexity   MetricCategory = "semantic_complexity"
	MetricDuplication          MetricCategory = "duplication"
	MetricCoupling             MetricCategory = "coupling"
	MetricDocumentation        MetricCategory = "documentation"
	MetricConsistency          MetricCategory = "consistency"
)

func (MetricCategory) String 

func (m MetricCategory) String() string

MetricCategory

type MinHashSignature 

type MinHashSignature struct {
	Values []uint64 `json:"values"`
}

MinHashSignature represents a MinHash signature for similarity estimation.

func (*MinHashSignature) JaccardSimilarity 

func (s *MinHashSignature) JaccardSimilarity(other *MinHashSignature) float64

JaccardSimilarity computes similarity between two MinHash signatures.

type NodeMetric 

type NodeMetric struct {
	NodeID                string  `json:"node_id"`
	Name                  string  `json:"name"`
	PageRank              float64 `json:"pagerank"`
	BetweennessCentrality float64 `json:"betweenness_centrality"`
	ClosenessCentrality   float64 `json:"closeness_centrality"`
	EigenvectorCentrality float64 `json:"eigenvector_centrality"`
	HarmonicCentrality    float64 `json:"harmonic_centrality"`
	InDegree              int     `json:"in_degree"`
	OutDegree             int     `json:"out_degree"`
	ClusteringCoef        float64 `json:"clustering_coefficient"`
	CommunityID           int     `json:"community_id,omitempty"`
}

NodeMetric represents computed metrics for a single node.

type NodeType 

type NodeType string

NodeType represents the type of graph node. 

const (
	NodeFile      NodeType = "file"
	NodeFunction  NodeType = "function"
	NodeClass     NodeType = "class"
	NodeModule    NodeType = "module"
	NodePackage   NodeType = "package"
	NodeTrait     NodeType = "trait"
	NodeInterface NodeType = "interface"
)

func (NodeType) String 

func (n NodeType) String() string

NodeType

type NormalizationStats 

type NormalizationStats struct {
	MaxLinesAdded       int     `json:"max_lines_added"`
	MaxLinesDeleted     int     `json:"max_lines_deleted"`
	MaxNumFiles         int     `json:"max_num_files"`
	MaxUniqueChanges    int     `json:"max_unique_changes"`
	MaxNumDevelopers    int     `json:"max_num_developers"`
	MaxAuthorExperience int     `json:"max_author_experience"`
	MaxEntropy          float64 `json:"max_entropy"`
}

NormalizationStats holds min-max values for normalization.

type OwnershipAnalysis 

type OwnershipAnalysis struct {
	GeneratedAt time.Time        `json:"generated_at"`
	Files       []FileOwnership  `json:"files"`
	Summary     OwnershipSummary `json:"summary"`
}

OwnershipAnalysis represents the full ownership analysis result.

func (*OwnershipAnalysis) CalculateSummary 

func (o *OwnershipAnalysis) CalculateSummary()

CalculateSummary computes summary statistics.

type OwnershipSummary 

type OwnershipSummary struct {
	TotalFiles       int      `json:"total_files"`
	BusFactor        int      `json:"bus_factor"`
	SiloCount        int      `json:"silo_count"`
	AvgContributors  float64  `json:"avg_contributors"`
	MaxConcentration float64  `json:"max_concentration"`
	TopContributors  []string `json:"top_contributors"`
}

OwnershipSummary provides aggregate statistics.

type PenaltyAttribution 

type PenaltyAttribution struct {
	SourceMetric MetricCategory   `json:"source_metric"`
	Amount       float32          `json:"amount"`
	AppliedTo    []MetricCategory `json:"applied_to"`
	Issue        string           `json:"issue"`
}

PenaltyAttribution tracks where a penalty was applied.

type PenaltyConfig 

type PenaltyConfig struct {
	ComplexityPenaltyBase   PenaltyCurve `json:"complexity_penalty_base" toml:"complexity_penalty_base"`
	DuplicationPenaltyCurve PenaltyCurve `json:"duplication_penalty_curve" toml:"duplication_penalty_curve"`
	CouplingPenaltyCurve    PenaltyCurve `json:"coupling_penalty_curve" toml:"coupling_penalty_curve"`
}

PenaltyConfig defines penalty curves for each metric.

func DefaultPenaltyConfig 

func DefaultPenaltyConfig() PenaltyConfig

DefaultPenaltyConfig returns the default penalty configuration.

type PenaltyCurve 

type PenaltyCurve string

PenaltyCurve defines how penalties are applied. 

const (
	PenaltyCurveLinear      PenaltyCurve = "linear"
	PenaltyCurveLogarithmic PenaltyCurve = "logarithmic"
	PenaltyCurveQuadratic   PenaltyCurve = "quadratic"
	PenaltyCurveExponential PenaltyCurve = "exponential"
)

func (PenaltyCurve) Apply 

func (pc PenaltyCurve) Apply(value, base float32) float32

Apply applies the penalty curve to a value.

func (PenaltyCurve) String 

func (pc PenaltyCurve) String() string

PenaltyCurve

type PenaltyTracker 

type PenaltyTracker struct {
	// contains filtered or unexported fields
}

PenaltyTracker tracks penalties applied during analysis.

func NewPenaltyTracker 

func NewPenaltyTracker() *PenaltyTracker

NewPenaltyTracker creates a new penalty tracker.

func (*PenaltyTracker) Apply 

func (pt *PenaltyTracker) Apply(issueID string, category MetricCategory, amount float32, issue string) float32

Apply attempts to apply a penalty, returning the amount if applied or 0 if already applied.

func (*PenaltyTracker) GetAttributions 

func (pt *PenaltyTracker) GetAttributions() []PenaltyAttribution

GetAttributions returns all applied penalty attributions.

type ProjectScore 

type ProjectScore struct {
	Files                []TdgScore       `json:"files"`
	AverageScore         float32          `json:"average_score"`
	AverageGrade         Grade            `json:"average_grade"`
	TotalFiles           int              `json:"total_files"`
	LanguageDistribution map[Language]int `json:"language_distribution"`
	GradeDistribution    map[Grade]int    `json:"grade_distribution"`
}

ProjectScore represents aggregated TDG scores for a project.

func AggregateProjectScore 

func AggregateProjectScore(scores []TdgScore) ProjectScore

AggregateProjectScore creates a ProjectScore from individual file scores.

func (*ProjectScore) Average 

func (p *ProjectScore) Average() TdgScore

Average returns the average TDG score across all files.

func (*ProjectScore) ToTDGReport 

func (p *ProjectScore) ToTDGReport(topN int) *TDGReport

ToTDGReport converts a ProjectScore to pmat-compatible TDGReport. Omen uses 0-100 scale (higher = better quality), pmat uses 0-5 scale (higher = more debt).

type ReferenceEdge 

type ReferenceEdge struct {
	From       uint32        `json:"from"`
	To         uint32        `json:"to"`
	Type       ReferenceType `json:"type"`
	Confidence float64       `json:"confidence"`
}

ReferenceEdge represents a relationship between two code elements.

type ReferenceNode 

type ReferenceNode struct {
	ID         uint32 `json:"id"`
	Name       string `json:"name"`
	File       string `json:"file"`
	Line       uint32 `json:"line"`
	EndLine    uint32 `json:"end_line"`
	Kind       string `json:"kind"` // function, class, variable
	Language   string `json:"language"`
	IsExported bool   `json:"is_exported"`
	IsEntry    bool   `json:"is_entry"`
}

ReferenceNode represents a code element in the reference graph.

type ReferenceType 

type ReferenceType string

ReferenceType classifies the relationship between code elements. 

const (
	RefDirectCall      ReferenceType = "direct_call"
	RefIndirectCall    ReferenceType = "indirect_call"
	RefImport          ReferenceType = "import"
	RefInheritance     ReferenceType = "inheritance"
	RefTypeReference   ReferenceType = "type_reference"
	RefDynamicDispatch ReferenceType = "dynamic_dispatch"
)

func (ReferenceType) String 

func (r ReferenceType) String() string

ReferenceType

type RepoMap 

type RepoMap struct {
	GeneratedAt time.Time      `json:"generated_at"`
	Symbols     []Symbol       `json:"symbols"`
	Summary     RepoMapSummary `json:"summary"`
}

RepoMap represents a PageRank-ranked summary of repository symbols.

func (*RepoMap) CalculateSummary 

func (r *RepoMap) CalculateSummary()

CalculateSummary computes summary statistics for the repo map.

func (*RepoMap) SortByPageRank 

func (r *RepoMap) SortByPageRank()

SortByPageRank sorts symbols by PageRank in descending order.

func (*RepoMap) TopN 

func (r *RepoMap) TopN(n int) []Symbol

TopN returns the top N symbols by PageRank.

type RepoMapSummary 

type RepoMapSummary struct {
	TotalSymbols   int     `json:"total_symbols"`
	TotalFiles     int     `json:"total_files"`
	AvgPageRank    float64 `json:"avg_pagerank"`
	MaxPageRank    float64 `json:"max_pagerank"`
	AvgConnections float64 `json:"avg_connections"`
}

RepoMapSummary provides aggregate statistics for the repo map.

type RiskLevel 

type RiskLevel string

RiskLevel represents the defect probability risk category. PMAT-compatible: 3 levels with thresholds at 0.3 and 0.7 

const (
	RiskLow    RiskLevel = "low"    // < 0.3
	RiskMedium RiskLevel = "medium" // 0.3 - 0.7
	RiskHigh   RiskLevel = "high"   // >= 0.7
)

func CalculateRiskLevel 

func CalculateRiskLevel(probability float32) RiskLevel

CalculateRiskLevel determines risk level from probability. PMAT-compatible: Low (<0.3), Medium (0.3-0.7), High (>=0.7)

func (RiskLevel) String 

func (r RiskLevel) String() string

RiskLevel

type SATDAnalysis 

type SATDAnalysis struct {
	Items              []TechnicalDebt `json:"items"`
	Summary            SATDSummary     `json:"summary"`
	TotalFilesAnalyzed int             `json:"total_files_analyzed"`
	FilesWithDebt      int             `json:"files_with_debt"`
	AnalyzedAt         time.Time       `json:"analyzed_at"`
}

SATDAnalysis represents the full SATD analysis result.

type SATDSummary 

type SATDSummary struct {
	TotalItems    int            `json:"total_items"`
	BySeverity    map[string]int `json:"by_severity"`
	ByCategory    map[string]int `json:"by_category"`
	ByFile        map[string]int `json:"by_file,omitempty"`
	FilesWithSATD int            `json:"files_with_satd,omitempty"`
	AvgAgeDays    float64        `json:"avg_age_days,omitempty"`
}

SATDSummary provides aggregate statistics.

func NewSATDSummary 

func NewSATDSummary() SATDSummary

NewSATDSummary creates an initialized summary.

func (*SATDSummary) AddItem 

func (s *SATDSummary) AddItem(item TechnicalDebt)

AddItem updates the summary with a new debt item.

type Severity 

type Severity string

Severity represents the urgency of addressing the debt. 

const (
	SeverityLow      Severity = "low"
	SeverityMedium   Severity = "medium"
	SeverityHigh     Severity = "high"
	SeverityCritical Severity = "critical"
)

func (Severity) Escalate 

func (s Severity) Escalate() Severity

Escalate increases severity by one level (max Critical).

func (Severity) Reduce 

func (s Severity) Reduce() Severity

Reduce decreases severity by one level (min Low).

func (Severity) String 

func (s Severity) String() string

String implements fmt.Stringer for toon serialization.

func (Severity) Weight 

func (s Severity) Weight() int

SeverityWeight returns a numeric weight for sorting.

type SmellAnalysis 

type SmellAnalysis struct {
	GeneratedAt time.Time            `json:"generated_at"`
	Smells      []ArchitecturalSmell `json:"smells"`
	Components  []ComponentMetrics   `json:"components"`
	Summary     SmellSummary         `json:"summary"`
	Thresholds  SmellThresholds      `json:"thresholds"`
}

SmellAnalysis represents the full architectural smell analysis result.

func NewSmellAnalysis 

func NewSmellAnalysis() *SmellAnalysis

NewSmellAnalysis creates an initialized smell analysis.

func (*SmellAnalysis) AddSmell 

func (a *SmellAnalysis) AddSmell(smell ArchitecturalSmell)

AddSmell adds a smell and updates the summary.

func (*SmellAnalysis) CalculateSummary 

func (a *SmellAnalysis) CalculateSummary()

CalculateSummary computes summary statistics from components.

type SmellMetrics 

type SmellMetrics struct {
	FanIn       int     `json:"fan_in,omitempty"`
	FanOut      int     `json:"fan_out,omitempty"`
	Instability float64 `json:"instability,omitempty"`
	CycleLength int     `json:"cycle_length,omitempty"`
}

SmellMetrics provides quantitative data about the smell.

type SmellSeverity 

type SmellSeverity string

SmellSeverity represents the severity level of an architectural smell. 

const (
	SmellSeverityCritical SmellSeverity = "critical"
	SmellSeverityHigh     SmellSeverity = "high"
	SmellSeverityMedium   SmellSeverity = "medium"
)

type SmellSummary 

type SmellSummary struct {
	TotalSmells        int     `json:"total_smells"`
	CyclicCount        int     `json:"cyclic_count"`
	HubCount           int     `json:"hub_count"`
	UnstableCount      int     `json:"unstable_count"`
	GodCount           int     `json:"god_count"`
	CriticalCount      int     `json:"critical_count"`
	HighCount          int     `json:"high_count"`
	MediumCount        int     `json:"medium_count"`
	TotalComponents    int     `json:"total_components"`
	AverageInstability float64 `json:"average_instability"`
}

SmellSummary provides aggregate statistics.

type SmellThresholds 

type SmellThresholds struct {
	HubThreshold          int     `json:"hub_threshold"`          // Fan-in + Fan-out threshold for hub detection
	GodFanInThreshold     int     `json:"god_fan_in_threshold"`   // Minimum fan-in for god component
	GodFanOutThreshold    int     `json:"god_fan_out_threshold"`  // Minimum fan-out for god component
	InstabilityDifference float64 `json:"instability_difference"` // Max I difference for unstable dependency
	StableThreshold       float64 `json:"stable_threshold"`       // I < this is considered stable
	UnstableThreshold     float64 `json:"unstable_threshold"`     // I > this is considered unstable
}

SmellThresholds configures detection thresholds for architectural smells.

func DefaultSmellThresholds 

func DefaultSmellThresholds() SmellThresholds

DefaultSmellThresholds returns sensible default thresholds.

type SmellType 

type SmellType string

SmellType represents the type of architectural smell. 

const (
	SmellCyclicDependency   SmellType = "cyclic_dependency"
	SmellHubLikeDependency  SmellType = "hub_like_dependency"
	SmellUnstableDependency SmellType = "unstable_dependency"
	SmellGodComponent       SmellType = "god_component"
)

type Symbol 

type Symbol struct {
	Name      string  `json:"name"`
	Kind      string  `json:"kind"` // function, class, method, etc.
	File      string  `json:"file"`
	Line      int     `json:"line"`
	Signature string  `json:"signature"` // Full signature or summary
	PageRank  float64 `json:"pagerank"`
	InDegree  int     `json:"in_degree"`  // How many symbols call/use this
	OutDegree int     `json:"out_degree"` // How many symbols this calls/uses
}

Symbol represents a code symbol in the repository map.

type TDGHotspot 

type TDGHotspot struct {
	Path           string  `json:"path"`
	TdgScore       float64 `json:"tdg_score"`
	PrimaryFactor  string  `json:"primary_factor"`
	EstimatedHours float64 `json:"estimated_hours"`
}

TDGHotspot represents a file with high technical debt (pmat-compatible).

type TDGReport 

type TDGReport struct {
	Summary  TDGSummary   `json:"summary"`
	Hotspots []TDGHotspot `json:"hotspots"`
}

TDGReport is the pmat-compatible TDG analysis output.

type TDGSeverity 

type TDGSeverity string

TDGSeverity represents the severity classification based on thresholds (pmat-compatible). 

const (
	TDGSeverityNormal   TDGSeverity = "normal"   // TDG < 1.5
	TDGSeverityWarning  TDGSeverity = "warning"  // TDG 1.5-2.5
	TDGSeverityCritical TDGSeverity = "critical" // TDG > 2.5
)

func TDGSeverityFromValue 

func TDGSeverityFromValue(value float64) TDGSeverity

TDGSeverityFromValue converts a TDG value (0-5 scale) to severity.

func (TDGSeverity) String 

func (t TDGSeverity) String() string

TDGSeverity

type TDGSummary 

type TDGSummary struct {
	TotalFiles         int     `json:"total_files"`
	CriticalFiles      int     `json:"critical_files"`
	WarningFiles       int     `json:"warning_files"`
	AverageTdg         float64 `json:"average_tdg"`
	P95Tdg             float64 `json:"p95_tdg"`
	P99Tdg             float64 `json:"p99_tdg"`
	EstimatedDebtHours float64 `json:"estimated_debt_hours"`
}

TDGSummary provides aggregate statistics (pmat-compatible).

type TdgComparison 

type TdgComparison struct {
	Source1               TdgScore `json:"source1"`
	Source2               TdgScore `json:"source2"`
	Delta                 float32  `json:"delta"`
	ImprovementPercentage float32  `json:"improvement_percentage"`
	Winner                string   `json:"winner"`
	Improvements          []string `json:"improvements"`
	Regressions           []string `json:"regressions"`
}

TdgComparison represents a comparison between two TDG scores.

func NewTdgComparison 

func NewTdgComparison(source1, source2 TdgScore) TdgComparison

NewTdgComparison creates a comparison between two scores.

type TdgConfig 

type TdgConfig struct {
	Weights           WeightConfig                `json:"weights" toml:"weights"`
	Thresholds        ThresholdConfig             `json:"thresholds" toml:"thresholds"`
	Penalties         PenaltyConfig               `json:"penalties" toml:"penalties"`
	LanguageOverrides map[string]LanguageOverride `json:"language_overrides,omitempty" toml:"language_overrides,omitempty"`
}

TdgConfig is the TDG configuration.

func DefaultTdgConfig 

func DefaultTdgConfig() TdgConfig

DefaultTdgConfig returns the default TDG configuration.

func LoadTdgConfig 

func LoadTdgConfig(path string) (TdgConfig, error)

LoadTdgConfig loads configuration from a JSON file.

type TdgScore 

type TdgScore struct {
	// Component scores (each contributes to the 100-point total)
	StructuralComplexity  float32 `json:"structural_complexity"`   // Max 20 points
	SemanticComplexity    float32 `json:"semantic_complexity"`     // Max 15 points
	DuplicationRatio      float32 `json:"duplication_ratio"`       // Max 15 points
	CouplingScore         float32 `json:"coupling_score"`          // Max 15 points
	DocCoverage           float32 `json:"doc_coverage"`            // Max 5 points
	ConsistencyScore      float32 `json:"consistency_score"`       // Max 10 points
	HotspotScore          float32 `json:"hotspot_score"`           // Max 10 points (churn x complexity)
	TemporalCouplingScore float32 `json:"temporal_coupling_score"` // Max 10 points (co-change patterns)
	EntropyScore          float32 `json:"entropy_score"`           // Max 10 points (pattern entropy)

	// Aggregated score and grade
	Total float32 `json:"total"` // 0-100 (higher is better)
	Grade Grade   `json:"grade"` // A+ to F

	// Metadata
	Confidence           float32  `json:"confidence"`             // 0-1 confidence in the score
	Language             Language `json:"language"`               // Detected language
	FilePath             string   `json:"file_path,omitempty"`    // Source file path
	CriticalDefectsCount int      `json:"critical_defects_count"` // Count of critical defects
	HasCriticalDefects   bool     `json:"has_critical_defects"`   // Auto-fail flag

	// Penalty tracking for transparency
	PenaltiesApplied []PenaltyAttribution `json:"penalties_applied,omitempty"`
}

TdgScore represents a TDG score (0-100, higher is better).

func NewTdgScore 

func NewTdgScore() TdgScore

NewTdgScore creates a new TDG score with default values.

func (*TdgScore) CalculateTotal 

func (s *TdgScore) CalculateTotal()

CalculateTotal computes the total score and grade from components.

func (*TdgScore) SetMetric 

func (s *TdgScore) SetMetric(category MetricCategory, value float32)

SetMetric sets a metric value by category.

type TechnicalDebt 

type TechnicalDebt struct {
	Category    DebtCategory `json:"category" toon:"category"`
	Severity    Severity     `json:"severity" toon:"severity"`
	File        string       `json:"file" toon:"file"`
	Line        uint32       `json:"line" toon:"line"`
	Description string       `json:"description" toon:"description"`
	Marker      string       `json:"marker" toon:"marker"` // TODO, FIXME, HACK, etc.
	Text        string       `json:"text,omitempty" toon:"text,omitempty"`
	Column      uint32       `json:"column,omitempty" toon:"column,omitempty"`
	ContextHash string       `json:"context_hash,omitempty" toon:"context_hash,omitempty"` // BLAKE3 hash for identity tracking
	Author      string       `json:"author,omitempty" toon:"author,omitempty"`
	Date        *time.Time   `json:"date,omitempty" toon:"date,omitempty"`
}

TechnicalDebt represents a single SATD item found in code.

type TemporalCouplingAnalysis 

type TemporalCouplingAnalysis struct {
	GeneratedAt  time.Time               `json:"generated_at"`
	PeriodDays   int                     `json:"period_days"`
	MinCochanges int                     `json:"min_cochanges"`
	Couplings    []FileCoupling          `json:"couplings"`
	Summary      TemporalCouplingSummary `json:"summary"`
}

TemporalCouplingAnalysis represents the full temporal coupling analysis result.

func (*TemporalCouplingAnalysis) CalculateSummary 

func (t *TemporalCouplingAnalysis) CalculateSummary(totalFiles int)

CalculateSummary computes summary statistics from couplings. Couplings should be sorted by CouplingStrength descending before calling.

type TemporalCouplingSummary 

type TemporalCouplingSummary struct {
	TotalCouplings      int     `json:"total_couplings"`
	StrongCouplings     int     `json:"strong_couplings"` // Strength >= 0.5
	AvgCouplingStrength float64 `json:"avg_coupling_strength"`
	MaxCouplingStrength float64 `json:"max_coupling_strength"`
	TotalFilesAnalyzed  int     `json:"total_files_analyzed"`
}

TemporalCouplingSummary provides aggregate statistics.

type ThresholdConfig 

type ThresholdConfig struct {
	MaxCyclomaticComplexity uint32  `json:"max_cyclomatic_complexity" toml:"max_cyclomatic_complexity"`
	MaxCognitiveComplexity  uint32  `json:"max_cognitive_complexity" toml:"max_cognitive_complexity"`
	MaxNestingDepth         uint32  `json:"max_nesting_depth" toml:"max_nesting_depth"`
	MinTokenSequence        uint32  `json:"min_token_sequence" toml:"min_token_sequence"`
	SimilarityThreshold     float32 `json:"similarity_threshold" toml:"similarity_threshold"`
	MaxCoupling             uint32  `json:"max_coupling" toml:"max_coupling"`
	MinDocCoverage          float32 `json:"min_doc_coverage" toml:"min_doc_coverage"`
}

ThresholdConfig defines thresholds for TDG analysis.

func DefaultThresholdConfig 

func DefaultThresholdConfig() ThresholdConfig

DefaultThresholdConfig returns enterprise-standard thresholds.

type UnreachableBlock 

type UnreachableBlock struct {
	File      string `json:"file"`
	StartLine uint32 `json:"start_line"`
	EndLine   uint32 `json:"end_line"`
	Reason    string `json:"reason"` // e.g., "after return", "dead branch"
}

UnreachableBlock represents code that can never execute.

type Violation 

type Violation struct {
	Severity  ViolationSeverity `json:"severity"`
	Rule      string            `json:"rule"`
	Message   string            `json:"message"`
	Value     uint32            `json:"value"`
	Threshold uint32            `json:"threshold"`
	File      string            `json:"file"`
	Line      uint32            `json:"line"`
	Function  string            `json:"function,omitempty"`
}

Violation represents a complexity threshold violation.

type ViolationSeverity 

type ViolationSeverity string

ViolationSeverity indicates the severity of a complexity violation. 

const (
	SeverityWarning ViolationSeverity = "warning"
	SeverityError   ViolationSeverity = "error"
)

func (ViolationSeverity) String 

func (v ViolationSeverity) String() string

ViolationSeverity

type WeightConfig 

type WeightConfig struct {
	StructuralComplexity float32 `json:"structural_complexity" toml:"structural_complexity"`
	SemanticComplexity   float32 `json:"semantic_complexity" toml:"semantic_complexity"`
	Duplication          float32 `json:"duplication" toml:"duplication"`
	Coupling             float32 `json:"coupling" toml:"coupling"`
	Documentation        float32 `json:"documentation" toml:"documentation"`
	Consistency          float32 `json:"consistency" toml:"consistency"`
	Hotspot              float32 `json:"hotspot" toml:"hotspot"`
	TemporalCoupling     float32 `json:"temporal_coupling" toml:"temporal_coupling"`
}

WeightConfig defines the weight for each TDG metric component.

func DefaultWeightConfig 

func DefaultWeightConfig() WeightConfig

DefaultWeightConfig returns the default weight configuration. Weights are rebalanced to include hotspot (10%) and temporal coupling (10%).

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