doctree

package
v0.123.12 Latest Latest
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 Go to latest Published: Mar 12, 2024 License: Apache-2.0 Imports: 7 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ValidateKey 

func ValidateKey(key string) error

ValidateKey returns an error if the key is not valid.

Types

type Config 

type Config[T any] struct {
	// Shifter handles tree transformations.
	Shifter Shifter[T]
}

type Dimension 

type Dimension [1]int

Dimension is a row in the Hugo build matrix which currently has one value: language.

type DimensionFlag 

type DimensionFlag byte

DimensionFlag is a flag in the Hugo build matrix. 

const (
	// Language is currently the only dimension in the Hugo build matrix.
	DimensionLanguage DimensionFlag = 1 << iota
)

func (DimensionFlag) Has 

func (d DimensionFlag) Has(o DimensionFlag) bool

Has returns whether the given flag is set.

func (DimensionFlag) Index 

func (d DimensionFlag) Index() int

Index returns this flag's index in the Dimensions array.

func (DimensionFlag) Set 

func (d DimensionFlag) Set(o DimensionFlag) DimensionFlag

Set sets the given flag.

type Event 

type Event[T any] struct {
	Name   string
	Path   string
	Source T
	// contains filtered or unexported fields
}

Event is used to communicate events in the tree.

func (*Event[T]) StopPropagation 

func (e *Event[T]) StopPropagation()

StopPropagation stops the propagation of the event.

type LockType 

type LockType int
const (
	LockTypeNone LockType = iota
	LockTypeRead
	LockTypeWrite
)

type MutableTree 

type MutableTree interface {
	Delete(key string)
	DeleteAll(key string)
	DeletePrefix(prefix string) int
	DeletePrefixAll(prefix string) int
	Lock(writable bool) (commit func())
	CanLock() bool // Used for troubleshooting only.
}

MutableTree is a tree that can be modified.

type MutableTrees 

type MutableTrees []MutableTree

func (MutableTrees) CanLock 

func (t MutableTrees) CanLock() bool

func (MutableTrees) Delete 

func (t MutableTrees) Delete(key string)

func (MutableTrees) DeleteAll 

func (t MutableTrees) DeleteAll(key string)

func (MutableTrees) DeletePrefix 

func (t MutableTrees) DeletePrefix(prefix string) int

func (MutableTrees) DeletePrefixAll 

func (t MutableTrees) DeletePrefixAll(prefix string) int

func (MutableTrees) Lock 

func (t MutableTrees) Lock(writable bool) (commit func())

type NodeShiftTree 

type NodeShiftTree[T any] struct {
	// contains filtered or unexported fields
}

NodeShiftTree is the root of a tree that can be shaped using the Shape method. Note that multipled shapes of the same tree is meant to be used concurrently, so use the applicable locking when needed.

func New 

func New[T any](cfg Config[T]) *NodeShiftTree[T]

func (*NodeShiftTree[T]) CanLock 

func (t *NodeShiftTree[T]) CanLock() bool

func (*NodeShiftTree[T]) Delete 

func (r *NodeShiftTree[T]) Delete(key string)

func (*NodeShiftTree[T]) DeleteAll 

func (r *NodeShiftTree[T]) DeleteAll(key string)

func (*NodeShiftTree[T]) DeletePrefix 

func (r *NodeShiftTree[T]) DeletePrefix(prefix string) int

func (*NodeShiftTree[T]) DeletePrefixAll 

func (t *NodeShiftTree[T]) DeletePrefixAll(prefix string) int

func (*NodeShiftTree[T]) ForEeachInDimension 

func (r *NodeShiftTree[T]) ForEeachInDimension(s string, d int, f func(T) bool)

func (*NodeShiftTree[T]) Get 

func (r *NodeShiftTree[T]) Get(s string) T

func (*NodeShiftTree[T]) GetRaw 

func (r *NodeShiftTree[T]) GetRaw(s string) (T, bool)

func (*NodeShiftTree[T]) Has 

func (r *NodeShiftTree[T]) Has(s string) bool

func (*NodeShiftTree[T]) Increment 

func (t *NodeShiftTree[T]) Increment(d int) *NodeShiftTree[T]

Increment the value of dimension d by 1.

func (*NodeShiftTree[T]) InsertIntoCurrentDimension 

func (r *NodeShiftTree[T]) InsertIntoCurrentDimension(s string, v T) (T, bool)

func (*NodeShiftTree[T]) InsertIntoValuesDimension 

func (r *NodeShiftTree[T]) InsertIntoValuesDimension(s string, v T) (T, bool)

func (*NodeShiftTree[T]) InsertRawWithLock 

func (r *NodeShiftTree[T]) InsertRawWithLock(s string, v any) (any, bool)

func (*NodeShiftTree[T]) InsertWithLock 

func (r *NodeShiftTree[T]) InsertWithLock(s string, v T) (T, bool)

func (*NodeShiftTree[T]) Len 

func (t *NodeShiftTree[T]) Len() int

func (*NodeShiftTree[T]) Lock 

func (t *NodeShiftTree[T]) Lock(writable bool) (commit func())

Lock locks the data store for read or read/write access until commit is invoked. Note that Root is not thread-safe outside of this transaction construct.

func (*NodeShiftTree[T]) LongestPrefix 

func (r *NodeShiftTree[T]) LongestPrefix(s string, exact bool, predicate func(v T) bool) (string, T)

LongestPrefix finds the longest prefix of s that exists in the tree that also matches the predicate (if set). Set exact to true to only match exact in the current dimension (e.g. language).

func (*NodeShiftTree[T]) LongestPrefixAll 

func (r *NodeShiftTree[T]) LongestPrefixAll(s string) (string, bool)

LongestPrefixAll returns the longest prefix considering all tree dimensions.

func (*NodeShiftTree[T]) Shape 

func (t *NodeShiftTree[T]) Shape(d, v int) *NodeShiftTree[T]

Shape the tree for dimension d to value v.

func (*NodeShiftTree[T]) String 

func (t *NodeShiftTree[T]) String() string

func (*NodeShiftTree[T]) WalkPrefixRaw 

func (r *NodeShiftTree[T]) WalkPrefixRaw(prefix string, walker func(key string, value T) bool)

type NodeShiftTreeWalker 

type NodeShiftTreeWalker[T any] struct {
	// The tree to walk.
	Tree *NodeShiftTree[T]

	// Handle will be called for each node in the main tree.
	// If the callback returns true, the walk will stop.
	// The callback can optionally return a callback for the nested tree.
	Handle func(s string, v T, exact DimensionFlag) (terminate bool, err error)

	// Optional prefix filter.
	Prefix string

	// Enable read or write locking if needed.
	LockType LockType

	// When set, no dimension shifting will be performed.
	NoShift bool

	// Don't fall back to alternative dimensions (e.g. language).
	Exact bool

	// Used in development only.
	Debug bool

	// Optional context.
	// Note that this is copied to the nested walkers using Extend.
	// This means that walkers can pass data (down) and events (up) to
	// the related walkers.
	WalkContext *WalkContext[T]
	// contains filtered or unexported fields
}

func (NodeShiftTreeWalker[T]) Extend 

func (r NodeShiftTreeWalker[T]) Extend() *NodeShiftTreeWalker[T]

Extend returns a new NodeShiftTreeWalker with the same configuration as the and the same WalkContext as the original. Any local state is reset.

func (*NodeShiftTreeWalker[T]) ShouldSkip 

func (r *NodeShiftTreeWalker[T]) ShouldSkip(s string) bool

ShouldSkip returns whether the given key should be skipped in the walk.

func (*NodeShiftTreeWalker[T]) SkipPrefix 

func (r *NodeShiftTreeWalker[T]) SkipPrefix(prefix ...string)

SkipPrefix adds a prefix to be skipped in the walk.

func (*NodeShiftTreeWalker[T]) Walk 

func (r *NodeShiftTreeWalker[T]) Walk(ctx context.Context) error

type Shifter 

type Shifter[T any] interface {
	// ForEeachInDimension will call the given function for each value in the given dimension.
	// If the function returns true, the walk will stop.
	ForEeachInDimension(n T, d int, f func(T) bool)

	// Insert inserts new into the tree into the dimension it provides.
	// It may replace old.
	// It returns a T (can be the same as old).
	Insert(old, new T) T

	// Insert inserts new into the given dimension.
	// It may replace old.
	// It returns a T (can be the same as old).
	InsertInto(old, new T, dimension Dimension) T

	// Delete deletes T from the given dimension and returns whether the dimension was deleted and if  it's empty after the delete.
	Delete(v T, dimension Dimension) (bool, bool)

	// Shift shifts T into the given dimension
	// and returns the shifted T and a bool indicating if the shift was successful and
	// how accurate a match T is according to its dimensions.
	Shift(v T, dimension Dimension, exact bool) (T, bool, DimensionFlag)
}

Shifter handles tree transformations.

type SimpleTree 

type SimpleTree[T any] struct {
	// contains filtered or unexported fields
}

SimpleTree is a thread safe radix tree that holds T.

func NewSimpleTree 

func NewSimpleTree[T any]() *SimpleTree[T]

NewSimpleTree creates a new SimpleTree.

func (*SimpleTree[T]) Get 

func (tree *SimpleTree[T]) Get(s string) T

func (*SimpleTree[T]) Insert 

func (tree *SimpleTree[T]) Insert(s string, v T) T

func (*SimpleTree[T]) LongestPrefix 

func (tree *SimpleTree[T]) LongestPrefix(s string) (string, T)

func (*SimpleTree[T]) WalkPrefix 

func (tree *SimpleTree[T]) WalkPrefix(lockType LockType, s string, f func(s string, v T) (bool, error)) error

type Tree 

type Tree[T any] interface {
	Get(s string) T
	LongestPrefix(s string) (string, T)
	Insert(s string, v T) T
	WalkPrefix(lockType LockType, s string, f func(s string, v T) (bool, error)) error
}

Tree is a radix tree that holds T.

type TreeShiftTree 

type TreeShiftTree[T any] struct {
	// contains filtered or unexported fields
}

func NewTreeShiftTree 

func NewTreeShiftTree[T any](d, length int) *TreeShiftTree[T]

func (*TreeShiftTree[T]) Delete 

func (t *TreeShiftTree[T]) Delete(key string)

func (*TreeShiftTree[T]) DeletePrefix 

func (t *TreeShiftTree[T]) DeletePrefix(prefix string) int

func (*TreeShiftTree[T]) Get 

func (t *TreeShiftTree[T]) Get(s string) T

func (*TreeShiftTree[T]) Insert 

func (t *TreeShiftTree[T]) Insert(s string, v T) T

func (*TreeShiftTree[T]) Lock 

func (t *TreeShiftTree[T]) Lock(writable bool) (commit func())

func (*TreeShiftTree[T]) LongestPrefix 

func (t *TreeShiftTree[T]) LongestPrefix(s string) (string, T)

func (TreeShiftTree[T]) Shape 

func (t TreeShiftTree[T]) Shape(d, v int) *TreeShiftTree[T]

func (*TreeShiftTree[T]) WalkPrefix 

func (t *TreeShiftTree[T]) WalkPrefix(lockType LockType, s string, f func(s string, v T) (bool, error)) error

type WalkConfig 

type WalkConfig[T any] struct {
	// Optional prefix filter.
	Prefix string

	// Callback will be called for each node in the tree.
	// If the callback returns true, the walk will stop.
	Callback func(ctx *WalkContext[T], s string, t T) (bool, error)

	// Enable read or write locking if needed.
	LockType LockType

	// When set, no dimension shifting will be performed.
	NoShift bool

	// Exact will only match exact in the current dimension (e.g. language),
	// and will not look for alternatives.
	Exact bool
}

type WalkContext 

type WalkContext[T any] struct {
	HooksPost []func() error
	// contains filtered or unexported fields
}

WalkContext is passed to the Walk callback.

func (*WalkContext[T]) AddEventListener 

func (ctx *WalkContext[T]) AddEventListener(event, path string, handler func(*Event[T]))

AddEventListener adds an event listener to the tree. Note that the handler func may not add listeners.

func (*WalkContext[T]) AddPostHook 

func (ctx *WalkContext[T]) AddPostHook(handler func() error)

AddPostHook adds a post hook to the tree. This will be run after the tree has been walked.

func (*WalkContext[T]) Data 

func (ctx *WalkContext[T]) Data() *SimpleTree[any]

func (*WalkContext[T]) HandleEvents 

func (ctx *WalkContext[T]) HandleEvents() error

func (*WalkContext[T]) HandleEventsAndHooks 

func (ctx *WalkContext[T]) HandleEventsAndHooks() error

func (*WalkContext[T]) SendEvent 

func (ctx *WalkContext[T]) SendEvent(event *Event[T])

SendEvent sends an event up the tree.

type WalkFunc 

type WalkFunc[T any] func(string, T) (bool, error)

type WalkableTree 

type WalkableTree[T any] interface {
	WalkPrefixRaw(prefix string, walker func(key string, value T) bool)
}

WalkableTree is a tree that can be walked.

type WalkableTrees 

type WalkableTrees[T any] []WalkableTree[T]

func (WalkableTrees[T]) WalkPrefixRaw 

func (t WalkableTrees[T]) WalkPrefixRaw(prefix string, walker func(key string, value T) bool)

Source Files

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